CN201507279U - Separate-acidification hydraulic switch as well as upper valve and lower valve thereof - Google Patents
Separate-acidification hydraulic switch as well as upper valve and lower valve thereof Download PDFInfo
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- CN201507279U CN201507279U CN200920309169XU CN200920309169U CN201507279U CN 201507279 U CN201507279 U CN 201507279U CN 200920309169X U CN200920309169X U CN 200920309169XU CN 200920309169 U CN200920309169 U CN 200920309169U CN 201507279 U CN201507279 U CN 201507279U
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- 239000007788 liquid Substances 0.000 claims description 82
- 230000005540 biological transmission Effects 0.000 claims description 39
- 238000010306 acid treatment Methods 0.000 claims description 25
- 239000012530 fluid Substances 0.000 claims description 24
- 238000007789 sealing Methods 0.000 claims description 18
- 210000004907 gland Anatomy 0.000 claims description 7
- 238000012856 packing Methods 0.000 claims description 6
- 238000012423 maintenance Methods 0.000 claims description 3
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- 239000012224 working solution Substances 0.000 description 9
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- 230000006835 compression Effects 0.000 description 5
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- 238000010276 construction Methods 0.000 description 5
- 238000010079 rubber tapping Methods 0.000 description 5
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- 238000000034 method Methods 0.000 description 4
- 125000006850 spacer group Chemical group 0.000 description 4
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- 238000005086 pumping Methods 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000002950 deficient Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000001802 infusion Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
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Abstract
The utility model discloses a separate-acidification hydraulic switch as well as an upper valve and a lower valve thereof, wherein the upper valve and the lower valve are of the normally-closed valve and the normally-open valve respectively; and normally-closed pistons or normally-open pistons arranged on the two valves are respectively used for controlling the acidification state of an upper acidification layer and a lower acidification layer. The separate-acidification hydraulic switch has simple structure and convenient operation and use; the upper valve and the lower valve are connected in an acidification tubular column in series and are hammered by a sleeve, so as to realize the conversion of the on and off of the upper valve and the lower valve, and then acid liquor is conveyed to different stratums, therefore, the acidification effect is good, thereby realizing the aim of separate-acidification in a highly-deviated well; and the acidification efficiency is high, thereby overcoming the defects of low effective rate of acidification and poor utilization degree in the traditional acidification.
Description
Technical field
The utility model belongs to the oilfield exploitation technical field, the commutation hydraulic valve that uses during the separate layer acid treatment of particularly a kind of oil field, and definite saying so relates to a kind of separate layer acid treatment hydraulic selector and normally open valve and normally close valve.
Background technology
At present, for reducing pumpingh well well spacing quantity, reduce land seizure, alleviate the pressure of oilfield exploitation to environmental protection, reduce the development investment cost, high angle hole has obtained increasing application in current oilfield development process.Particularly open the area, shop in the Henan Oil Field, the oil reservoir in oil field distributes and is subjected to the geological conditions constraint bigger, the region that special some high angle hole distributes is subjected to ground end faults control obvious, its stratigraphic section is " ridge " and distributes, it is " imbricate " spread in the plane along the nose structure high-order bit, the oil-bearing layer position is many, physical difference is big, non-homogeneity is serious, and strata pressure keeps level about 40%, the situation more complicated.Along with the later development in oil field, shorting or annotating and do not advance phenomenon has appearred in the water injection well of most existing exploitation usefulness, makes the reserves of oil well can not get effectively employing, and development effectiveness is variation day by day.
It is one of major technique measure of oil well production increasing, intensified injection of wells that oil well is carried out the acidifying transformation.The patent No. is that the Chinese utility model patent manual of ZL200420096341.5 discloses a kind of separate layer acid treatment tapping valve, this separate layer acid treatment tapping valve mainly is made of top connection, compression spring, central tube, cylinder sleeve, pin, ball seat, sealing ring, lower contact etc., ball seat is packed in the central tube and is connected by dowel fixes, the two ends up and down of central tube are connected with upper and lower joint respectively by screw thread, central tube is with cylinder sleeve, compression spring, spacer ring outward successively, compression spring compression cylinder sleeve, cylinder sleeve and central tube are slidingly matched; Center tube wall is provided with outage, is provided with fluid passage between following cylinder sleeve and the central tube.Tapping valve with different size when this separate layer acid treatment tapping valve uses is connected in the acidifying tubing string, adopt the pitching in order of pitching method, utilize being sealed and matched of pitching and ball seat to build the pressure to realize tapping valve to open, acidifying solution is transported to the stratum that needs acidifying, realizes the not purpose of upper lifting pipe post separate layer acid treatment.But in high angle hole,, adopt conventional its pitching of stuff accurately to set, can not carry out separate layer acid treatment because the hole angle of high angle hole is bigger.Therefore the acidifying technology of in the past taking in high angle hole is to arrive the straight well section under the Y341 packer, then full well to be carried out general acidifying.Owing to be subjected to the influence of non-homogeneity, make in the high angle hole in, the hyposmosis interval can not get effective acidifying, development degree is poor, general acidifying efficient lower can not be satisfied the field produces needs.
The utility model content
The purpose of this utility model is the defective at prior art, provides a kind of and can need not the separate layer acid treatment hydraulic selector that pitching can be carried out separate layer acid treatment in high angle hole.
The technical solution of the utility model is: a kind of separate layer acid treatment hydraulic selector, it is made up of the last valve and the following valve that are serially connected in successively in the acidizing treatment tubing string, described go up valve and following valve include central tube and be connected in two ends about the central tube on, lower contact, on the outer surface of tube wall of central tube in last, axially be movably installed with movable cylinder sleeve between the lower contact, movable cylinder sleeve is assemblied on the central tube by the spring that its top is provided with, on central tube reaches, be provided with the axial central fluid channel that is used for the hydraulic fluid circulation in the lower contact, the bottom of movable cylinder sleeve cooperates with the lower contact roof pressure, be provided with axially extended piston channel between movable cylinder sleeve and lower contact and the central tube outer wall, axial activity is equipped with piston in the piston channel, the internal liquid that is used for that the upper end of corresponding piston channel is provided with conducting piston channel and central fluid channel on the tube wall of described central tube leaks with the up last pressure transmission hole of driving cylinder cover, and the outside liquid that is used for that the lower end of corresponding piston channel is provided with the piston channel conducting on the tube wall of described lower contact enters with the up following pressure transmission hole of driven plunger; Described movable cylinder sleeve and lower contact contact that fitting face pressure transmission hole on movable cylinder sleeve is subjected to drives and the roof pressure effect of spring under form the outer liquid head piece that can open or close; Described piston was in the piston channel bottom before not being subjected to pressure transmission hole driving down position is defined as low dot location, described piston is in piston channel top after being subjected to pressure transmission hole driving down position is defined as high some position, is provided with between described piston and the central tube tube wall to keep piston to be in the high detent mechanism of putting position and low dot location respectively;
The piston of described valve down is for often opening piston, often open and be provided with the spout that is communicated with piston channel and outer liquid head piece when piston is in low dot location when often opening between piston and the movable cylinder sleeve, often open on the piston be provided with below the spout when often open seal when piston is in high some position outside the seal section of liquid head piece;
The described piston of going up valve is normally closed piston, the central tube tube wall of the central tube of last valve is provided with the interior liquid flow hole of the perforation tube wall corresponding with outer liquid head piece, be provided with the seal section of when normally closed piston is in low dot location closed piston passage and outer liquid head piece between normally closed piston and the movable cylinder sleeve, normally closed piston bottom be provided with when normally closed piston the is in high some position described Inner liquid flow hole on the connection central tube with outside the liquid-through hole of liquid head piece.
What the seal section of often opening piston in the described down valve was provided with when often opening piston and the be in high some position outer liquid head piece of sealing often opens the O-ring seals group, and the described O-ring seals group of often opening comprises and is in high when putting the position and the last sealing ring that is sealed and matched of movable cylinder sleeve and the lower seal that is sealed and matched with lower contact when often opening piston.
The described seal section of going up normally closed piston in the valve is provided with the normally closed O-ring seals group of closed piston passage and movable cylinder sleeve and lower contact cooperation place when normally closed piston is in low dot location, and described normally closed O-ring seals group comprises the last sealing ring that cooperates with liner packing and the lower seal that is positioned at below the liquid flow hole and lower contact is sealed and matched when normally closed piston is in low dot location; The upper and lower that is positioned at liquid-through hole on the fitting face of normally closed piston and central tube outer wall also is respectively equipped with O-ring seals.
Described detent mechanism comprises the elastic positioning device that radially is arranged on piston top, and the height point position of corresponding piston and low dot location offer the locating slot that cooperates with described elastic positioning device respectively on the outer wall of central tube.
Described elastic positioning device comprises the screwed hole that radially is opened in piston top, be installed with a gland in the hole, be top-loaded with a stage clip in the gland, the end roof pressure of stage clip is connected with a positioning block, is provided with the alignment pin that the locating slot offered with the corresponding piston low dot location of described central tube inner tubal wall cooperates on the fitting face of this locating piece and central tube inner tubal wall.
Adopt said structure, separate layer acid treatment hydraulic selector of the present utility model is simple in structure, easy for operation; To go up valve and following valve is connected in the acidifying tubing string, suppress by sleeve pipe, can realize the conversion of valve and following valve open and close state, acid solution is transported to different stratum, acidizing effect is good, has realized the purpose of separate layer acid treatment in high angle hole, acidifying efficient height, it is efficient low to have solved in the general acidifying acidifying, the defective of development degree difference.
The invention also discloses valve on a kind of separate layer acid treatment hydraulic pressure, it comprise central tube and be connected in central tube up and down two ends on, lower contact, on the outer surface of tube wall of central tube in last, axially be movably installed with movable cylinder sleeve between the lower contact, movable cylinder sleeve is assemblied on the central tube by the spring that its top is provided with, on central tube reaches, be provided with the axial central fluid channel that is used for the hydraulic fluid circulation in the lower contact, the bottom of movable cylinder sleeve cooperates with the lower contact roof pressure, be provided with axially extended piston channel between movable cylinder sleeve and lower contact and the central tube outer wall, axial activity is equipped with normally closed piston in the piston channel, the internal liquid that is used for that the upper end of corresponding piston channel is provided with conducting piston channel and central fluid channel on the tube wall of described central tube leaks with the up last pressure transmission hole of driving cylinder cover, and the outside liquid that is used for that the lower end of corresponding piston channel is provided with the piston channel conducting on the tube wall of described lower contact enters with the up following pressure transmission hole of driven plunger; Described movable cylinder sleeve and lower contact contact that fitting face pressure transmission hole on movable cylinder sleeve is subjected to drives and the roof pressure effect of spring under form the outer liquid head piece that can open or close; Described normally closed piston was in the piston channel bottom before not being subjected to pressure transmission hole driving down position is defined as low dot location, described normally closed piston is in piston channel top after being subjected to pressure transmission hole driving down position is defined as high some position, is provided with between described normally closed piston and the central tube tube wall to keep normally closed piston to be in the high detent mechanism of putting position and low dot location respectively; The central tube tube wall of the central tube of last valve is provided with the interior liquid flow hole of the perforation tube wall corresponding with outer liquid head piece, be provided with the seal section of when normally closed piston is in low dot location closed piston passage and outer liquid head piece between normally closed piston and the movable cylinder sleeve, normally closed piston bottom be provided with when normally closed piston the is in high some position described Inner liquid flow hole on the connection central tube with outside the liquid-through hole of liquid head piece.
The seal section of described normally closed piston is provided with the normally closed O-ring seals group of closed piston passage and movable cylinder sleeve and lower contact cooperation place when normally closed piston is in low dot location, and described normally closed O-ring seals group comprises the last sealing ring that cooperates with liner packing and is positioned at the liquid flow hole below and lower seal that lower contact is sealed and matched when normally closed piston is in low dot location; The upper and lower that is positioned at liquid-through hole on the fitting face of normally closed piston and central tube outer wall also is respectively equipped with O-ring seals.
The utility model discloses a kind of separate layer acid treatment liquid screw down valve simultaneously, it comprise central tube and be connected in central tube up and down two ends on, lower contact, on the outer surface of tube wall of central tube in last, axially be movably installed with movable cylinder sleeve between the lower contact, movable cylinder sleeve is assemblied on the central tube by the spring that its top is provided with, on central tube reaches, be provided with the axial central fluid channel that is used for the hydraulic fluid circulation in the lower contact, the bottom of movable cylinder sleeve cooperates with the lower contact roof pressure, be provided with axially extended piston channel between movable cylinder sleeve and lower contact and the central tube outer wall, axial activity is equipped with and often opens piston in the piston channel, the internal liquid that is used for that the upper end of corresponding piston channel is provided with conducting piston channel and central fluid channel on the tube wall of described central tube leaks with the up last pressure transmission hole of driving cylinder cover, and the outside liquid that is used for that the lower end of corresponding piston channel is provided with the piston channel conducting on the tube wall of described lower contact enters with the up following pressure transmission hole of driven plunger; Described movable cylinder sleeve and lower contact contact that fitting face pressure transmission hole on movable cylinder sleeve is subjected to drives and the roof pressure effect of spring under form the outer liquid head piece that can open or close; The described piston of often opening is defined as low dot location in the position that is not subjected to be in the piston channel bottom before down pressure transmission hole drives, the described piston of often opening is defined as high some position in the position that is subjected to be in piston channel top after down pressure transmission hole drives, and described often opening is provided with maintenance and often opens piston and be in the detent mechanism that height is put position and low dot location respectively between piston and the central tube tube wall; Often open and be provided with the spout that is communicated with piston channel and outer liquid head piece when piston is in low dot location when often opening between piston and the movable cylinder sleeve, often open on the piston be provided with below the spout when often open seal when piston is in high some position outside the seal section of liquid head piece.
What the seal section of often opening piston in the described down valve was provided with when often opening piston and the be in high some position outer liquid head piece of sealing often opens the O-ring seals group, and the described O-ring seals group of often opening comprises and is in high when putting the position and the last sealing ring that is sealed and matched of movable cylinder sleeve and the lower seal that is sealed and matched with lower contact when often opening piston.
Description of drawings
Fig. 1 is the structural representation of normally close valve in the utility model;
Fig. 2 is the structural representation of normally open valve in the utility model;
Fig. 3 is applied in use schematic diagram in the acidifying tubing string for the utility model.
The specific embodiment
As shown in Figure 1 and Figure 2, separate layer acid treatment hydraulic selector of the present utility model is constituted by last valve and following valve, two valve bodies have included top connection 1, lower contact 14 and central tube 6, top connection 1 and lower contact 14 are connected in the two ends of central tube 6 respectively by screw thread, are provided with the axial central fluid channel that is used for the hydraulic fluid circulation in central tube 6 and the upper and lower joint 1,14.Be set with movable cylinder sleeve 7 on the outer wall of central tube 6, movable cylinder sleeve 7 is assemblied on the central tube by spring 5 elasticity that its top is provided with, the tube wall axial sliding fit of movable cylinder sleeve 7 and central tube 6.Spring 5 tops are contained between movable cylinder sleeve 7 and the top connection 1, and one end roof pressure is connected on the movable cylinder sleeve 7, and other end roof pressure is connected on the spacer ring 4, and spacer ring 4 is fixing by a regulating sleeve 2, and regulating sleeve 2 spinnings are in top connection 1.Movable cylinder sleeve 7 is connected in the lower contact 14 by spring 5 roof pressures, and movable cylinder sleeve 7 adopts the conical surface to contact cooperation with lower contact 14.The bottom of movable cylinder sleeve 7 cooperates with lower contact 14 roof pressures, be provided with axially extended piston channel between movable cylinder sleeve 7 and lower contact 14 and central tube 6 outer walls, axial activity is equipped with piston in the piston channel, the internal liquid that is used for that the upper end of corresponding piston channel is provided with conducting piston channel and central fluid channel on the tube wall of central tube 6 leaks driving the up last pressure transmission hole 16 of movable cylinder sleeve, and the outside liquid that is used for that the lower end of corresponding piston channel is provided with the piston channel conducting on the tube wall of lower contact 14 enters with the up following pressure transmission hole 15 of driven plunger.But movable cylinder sleeve 7 is subjected to pressure transmission hole 16 to drive the outer liquid head piece that up back forms opening and closing with the fitting face that contacts of lower contact 14 at movable cylinder sleeve 7.Wherein, piston was in the piston channel bottom before not being subjected to pressure transmission hole 15 drivings down position is defined as low dot location, piston is in piston channel top after being subjected to pressure transmission hole 15 drivings down position is defined as high some position, is provided with between each piston and central tube 6 tube walls to keep piston to be in the high detent mechanism of putting position and low dot location respectively.Detent mechanism comprises the elastic positioning device that radially is arranged on piston top and the height point position of corresponding piston and low dot location offer the locating slot that cooperates with elastic positioning device respectively on the outer tube wall of central tube 6.Elastic positioning device comprises the screwed hole that radially is opened in piston top, be installed with a gland 10 in the hole, be top-loaded with a stage clip 9 in the gland 10, the end roof pressure of stage clip 9 is connected with a positioning block 8, convexes with the alignment pin that the locating slot offered with the corresponding piston low dot location of central tube 6 outer tube walls cooperates on the fitting face of locating piece 8 and central tube 6 outer tube walls.
Wherein, the piston of following valve is for often opening piston 11 ', often open and be provided with the spout that is communicated with piston channel and outer liquid head piece when piston 11 ' is in low dot location when often opening between piston 11 ' and the movable cylinder sleeve 7, often open piston 11 ' go up be provided with below the spout when often open seal when piston 11 ' is in high some position outside the hermetically-sealed construction of liquid head piece.The sealing structure comprise often open piston go up to be provided with when often opening piston 11 ' and be in high some position the outer liquid head piece of sealing often open the O-ring seals group, this is often opened the O-ring seals group and comprises and be in high when putting the position and the last sealing ring that is sealed and matched of movable cylinder sleeve 7 and the lower seal that is sealed and matched with lower contact 14 when often opening piston 11 '.
The piston of last valve is normally closed piston 11, the tube wall of the central tube 6 of last valve is provided with the interior liquid flow hole 12 of the perforation tube wall corresponding with outer liquid head piece, be provided with the hermetically-sealed construction of when normally closed piston 11 is in low dot location closed piston passage and outer liquid head piece between normally closed piston 11 and the movable cylinder sleeve 7, normally closed piston 11 bottoms be provided with when normally closed piston 11 the is in high some position Inner liquid flow hole 12 on the connection central tube 6 with outside the liquid-through hole 13 of liquid head piece.Hermetically-sealed construction on the normally closed piston 11 comprises the normally closed O-ring seals group of when normally closed piston 11 is in low dot location closed piston passage and outer liquid head piece, the last sealing ring that normally closed O-ring seals group comprises when normally closed piston 11 is in low dot location and movable cylinder sleeve 7 is sealed and matched be positioned at the lower seal that liquid flow hole 12 belows and lower contact 14 are sealed and matched; The upper and lower that is positioned at liquid-through hole 13 on the fitting face of normally closed piston 11 and central tube 6 outer walls also is respectively equipped with O-ring seals.
Two valve bodies were inserted in movable cylinder sleeve 7, normally closed piston 11 successively or often open piston 11 ' to central tube 6 in when assembling, to normally closed piston 11 or often open in the screwed hole of piston 11 ' by the screw thread gland 10 of packing into, pack into then alignment pin 8 and stage clip 9.Lower contact 14 is connected with central tube 6 by screw thread, and is undertaken spacing by the interior step of lower contact 14.Be inserted in spring 5 and spacer ring 4 successively from the other end of central tube 6.Top connection 1 is connected with central tube 6 by screw thread, is undertaken spacing by the interior step of top connection 1.Regulating sleeve 2 is connected with top connection 1 by screw thread, and exposing 5 buttons with the top screw thread of top connection 1 is standard, and the pin 3 of packing into then prevents that steel bushing 2 from rotating in the process of going into the well.
Carry out acidifying when work as shown in Figure 3, last valve 20 and following valve 21 are serially connected on the acidizing treatment tubing string, hydraulic anchor 17, the first well packer 18-1 are installed on this acidizing treatment tubing string from top to bottom successively, go up centralizer 19-1, go up valve 20, the second well packer 18-2, centralizer 19-2, following valve 21, the 3rd well packer 18-3 and ball-and-seat 22 etc. down.Tubing string is suppressed by ground pump truck after being lowered to by designing requirement, and to tubing string infusion acid solution, when fluid pressure reached 1.5～2.0MPa, well packers at different levels set, Seal Oil cover annular space.The interior liquid flow hole of working solution by central tube 6 enters in the piston channel between movable cylinder sleeve 7 and the central tube 6, after pressure reaches 2.5～3.5MPa, working solution promotes to move on the pressure that movable cylinder sleeve 7 overcomes spring 5, opens the outer liquid head piece of movable cylinder sleeve 7 and lower contact 14 fitting faces.Because normally closed piston 11 seals inside and outside liquid head piece, working solution can not flow out in last valve 20, promptly goes up valve 20 and is in closed condition in the last valve 20; In the following valve, working solution enters in the piston channel by last pressure transmission hole 16, offers spout on the piston 11 ' owing to often open, and working solution enters acidifying layer B from the movable cylinder sleeve 7 of following valve and the outer liquid head piece outflow of the conical surface junction of lower contact 14.
After acidifying layer B construction finishes, termination of pumping release, well packer deblockings at different levels.Suppress from overlapping effective clear water then, liquid enters in the piston channel from the pressure transmission hole 15 of lower contact 14, and promote normally closed piston 11 or often open piston 11 ' and cut off alignment pin 8 and move up, when alignment pin 8 moves to the termination locating slot of corresponding piston on the central tube 6, alignment pin 8 enters under the elastic force effect of stage clip 9 in this termination locating slot, normally closed piston 11 or often to open piston 11 ' no longer mobile.Termination of pumping release then, infusion acid solution in the oil pipe again, when fluid pressure reached 1.5～2.0MPa, well packers at different levels set, Seal Oil cover annular space.The working solution last pressure transmission hole 16 of the central tube 6 by last valve 20 and following valve 21 respectively enters in the piston channel, and after pressure reached 2.5～3.5MPa, working solution promotion movable cylinder sleeve 7 overcame on the pressure of spring 5 and moves.In the following valve 21, owing to often open on the piston 11 '? O? the type cushion rubber seals outer liquid head piece, and working solution can promptly not descend valve 21 to be in closed condition from flowing out in the valve 21 down.In the last valve 20, owing to move on the normally closed piston 11, liquid flow hole 12 and outer liquid head piece in the liquid-through hole of offering on the piston 13 is communicated with, working solution flows out from the interior liquid flow hole 12 of last valve central tube 6, liquid-through hole 13 on the normally closed piston 11 and the movable cylinder sleeve 7 outer liquid head piece with the conical surface of lower contact 14, enters acidifying layer A.
After acidifying layer A construction finishes, termination of pumping release, well packer deblockings at different levels.Beat hydraulic pressure from the oil jacket annular space with clear water and carry out anti-flushing well, trip out operating tool string at last.
By Fig. 1, the last valve in the utility model and following valve arrangement are basic identical as can be seen among Fig. 2, last valve and following valve all adopted shape identical with structure on, lower contact, central tube, compression spring and cylinder sleeve, all offer pressure transmission hole and interior liquid flow hole on its central tube, its difference only is down that the interior liquid flow hole in the valve is inoperative fully, the piston structure that assembles in two valves and the installation site difference of the sealing ring on the piston, and the parts of other parts can be general, such design can be when practical application, the repair parts quantity of valve and following valve is convenient to these two kinds of valve bodies of care and maintenance in the minimizing.
Claims (9)
1. separate layer acid treatment hydraulic selector, it is characterized in that, it is made up of the last valve and the following valve that are serially connected in successively in the acidizing treatment tubing string, described go up valve and following valve include central tube and be connected in two ends about the central tube on, lower contact, on the outer surface of tube wall of central tube in last, axially be movably installed with movable cylinder sleeve between the lower contact, movable cylinder sleeve is assemblied on the central tube by the spring that its top is provided with, on central tube reaches, be provided with the axial central fluid channel that is used for the hydraulic fluid circulation in the lower contact, the bottom of movable cylinder sleeve cooperates with the lower contact roof pressure, be provided with axially extended piston channel between movable cylinder sleeve and lower contact and the central tube outer wall, axial activity is equipped with piston in the piston channel, the internal liquid that is used for that the upper end of corresponding piston channel is provided with conducting piston channel and central fluid channel on the tube wall of described central tube leaks with the up last pressure transmission hole of driving cylinder cover, and the outside liquid that is used for that the lower end of corresponding piston channel is provided with the piston channel conducting on the tube wall of described lower contact enters with the up following pressure transmission hole of driven plunger; Described movable cylinder sleeve and lower contact contact that fitting face pressure transmission hole on movable cylinder sleeve is subjected to drives and the roof pressure effect of spring under form the outer liquid head piece that can open or close; Described piston was in the piston channel bottom before not being subjected to pressure transmission hole driving down position is defined as low dot location, described piston is in piston channel top after being subjected to pressure transmission hole driving down position is defined as high some position, is provided with between described piston and the central tube tube wall to keep piston to be in the high detent mechanism of putting position and low dot location respectively;
The piston of described valve down is for often opening piston, often open and be provided with the spout that is communicated with piston channel and outer liquid head piece when piston is in low dot location when often opening between piston and the movable cylinder sleeve, often open on the piston be provided with below the spout when often open seal when piston is in high some position outside the seal section of liquid head piece;
The described piston of going up valve is normally closed piston, the central tube tube wall of the central tube of last valve is provided with the interior liquid flow hole of the perforation tube wall corresponding with outer liquid head piece, be provided with the seal section of when normally closed piston is in low dot location closed piston passage and outer liquid head piece between normally closed piston and the movable cylinder sleeve, normally closed piston bottom be provided with when normally closed piston the is in high some position described Inner liquid flow hole on the connection central tube with outside the liquid-through hole of liquid head piece.
2. separate layer acid treatment hydraulic selector according to claim 1, it is characterized in that, what the seal section of often opening piston in the described down valve was provided with when often opening piston and the be in high some position outer liquid head piece of sealing often opens the O-ring seals group, and the described O-ring seals group of often opening comprises and is in high when putting the position and the last sealing ring that is sealed and matched of movable cylinder sleeve and the lower seal that is sealed and matched with lower contact when often opening piston.
3. separate layer acid treatment hydraulic selector according to claim 1, it is characterized in that, the described seal section of going up normally closed piston in the valve is provided with the normally closed O-ring seals group of closed piston passage and movable cylinder sleeve and lower contact cooperation place when normally closed piston is in low dot location, and described normally closed O-ring seals group comprises the last sealing ring that cooperates with liner packing and the lower seal that is positioned at below the liquid flow hole and lower contact is sealed and matched when normally closed piston is in low dot location; The upper and lower that is positioned at liquid-through hole on the fitting face of normally closed piston and central tube outer wall also is respectively equipped with O-ring seals.
4. according to claim 1 or 2 or 3 described separate layer acid treatment hydraulic selectors, it is characterized in that, described detent mechanism comprises the elastic positioning device that radially is arranged on piston top, and the height point position of corresponding piston and low dot location offer the locating slot that cooperates with described elastic positioning device respectively on the outer wall of central tube.
5. separate layer acid treatment hydraulic selector according to claim 4, it is characterized in that, described elastic positioning device comprises the screwed hole that radially is opened in piston top, be installed with a gland in the hole, be top-loaded with a stage clip in the gland, the end roof pressure of stage clip is connected with a positioning block, is provided with the alignment pin that the locating slot offered with the corresponding piston low dot location of described central tube inner tubal wall cooperates on the fitting face of this locating piece and central tube inner tubal wall.
6. valve on the separate layer acid treatment hydraulic pressure as claimed in claim 1, it is characterized in that, comprise central tube and be connected in central tube up and down two ends on, lower contact, on the outer surface of tube wall of central tube in last, axially be movably installed with movable cylinder sleeve between the lower contact, movable cylinder sleeve is assemblied on the central tube by the spring that its top is provided with, on central tube reaches, be provided with the axial central fluid channel that is used for the hydraulic fluid circulation in the lower contact, the bottom of movable cylinder sleeve cooperates with the lower contact roof pressure, be provided with axially extended piston channel between movable cylinder sleeve and lower contact and the central tube outer wall, axial activity is equipped with normally closed piston in the piston channel, the internal liquid that is used for that the upper end of corresponding piston channel is provided with conducting piston channel and central fluid channel on the tube wall of described central tube leaks with the up last pressure transmission hole of driving cylinder cover, and the outside liquid that is used for that the lower end of corresponding piston channel is provided with the piston channel conducting on the tube wall of described lower contact enters with the up following pressure transmission hole of driven plunger; Described movable cylinder sleeve and lower contact contact that fitting face pressure transmission hole on movable cylinder sleeve is subjected to drives and the roof pressure effect of spring under form the outer liquid head piece that can open or close; Described normally closed piston was in the piston channel bottom before not being subjected to pressure transmission hole driving down position is defined as low dot location, described normally closed piston is in piston channel top after being subjected to pressure transmission hole driving down position is defined as high some position, is provided with between described normally closed piston and the central tube tube wall to keep normally closed piston to be in the high detent mechanism of putting position and low dot location respectively; The central tube tube wall of the central tube of last valve is provided with the interior liquid flow hole of the perforation tube wall corresponding with outer liquid head piece, be provided with the seal section of when normally closed piston is in low dot location closed piston passage and outer liquid head piece between normally closed piston and the movable cylinder sleeve, normally closed piston bottom be provided with when normally closed piston the is in high some position described Inner liquid flow hole on the connection central tube with outside the liquid-through hole of liquid head piece.
7. valve on the separate layer acid treatment hydraulic pressure according to claim 6, it is characterized in that, the seal section of described normally closed piston is provided with the normally closed O-ring seals group of closed piston passage and movable cylinder sleeve and lower contact cooperation place when normally closed piston is in low dot location, and described normally closed O-ring seals group comprises the last sealing ring that cooperates with liner packing and is positioned at the liquid flow hole below and lower seal that lower contact is sealed and matched when normally closed piston is in low dot location; The upper and lower that is positioned at liquid-through hole on the fitting face of normally closed piston and central tube outer wall also is respectively equipped with O-ring seals.
8. separate layer acid treatment liquid screw down valve as claimed in claim 1, it is characterized in that, comprise central tube and be connected in central tube up and down two ends on, lower contact, on the outer surface of tube wall of central tube in last, axially be movably installed with movable cylinder sleeve between the lower contact, movable cylinder sleeve is assemblied on the central tube by the spring that its top is provided with, on central tube reaches, be provided with the axial central fluid channel that is used for the hydraulic fluid circulation in the lower contact, the bottom of movable cylinder sleeve cooperates with the lower contact roof pressure, be provided with axially extended piston channel between movable cylinder sleeve and lower contact and the central tube outer wall, axial activity is equipped with and often opens piston in the piston channel, the internal liquid that is used for that the upper end of corresponding piston channel is provided with conducting piston channel and central fluid channel on the tube wall of described central tube leaks with the up last pressure transmission hole of driving cylinder cover, and the outside liquid that is used for that the lower end of corresponding piston channel is provided with the piston channel conducting on the tube wall of described lower contact enters with the up following pressure transmission hole of driven plunger; Described movable cylinder sleeve and lower contact contact that fitting face pressure transmission hole on movable cylinder sleeve is subjected to drives and the roof pressure effect of spring under form the outer liquid head piece that can open or close; The described piston of often opening is defined as low dot location in the position that is not subjected to be in the piston channel bottom before down pressure transmission hole drives, the described piston of often opening is defined as high some position in the position that is subjected to be in piston channel top after down pressure transmission hole drives, and described often opening is provided with maintenance and often opens piston and be in the detent mechanism that height is put position and low dot location respectively between piston and the central tube tube wall; Often open and be provided with the spout that is communicated with piston channel and outer liquid head piece when piston is in low dot location when often opening between piston and the movable cylinder sleeve, often open on the piston be provided with below the spout when often open seal when piston is in high some position outside the seal section of liquid head piece.
9. separate layer acid treatment liquid screw down valve according to claim 8, it is characterized in that, what the seal section of often opening piston in the described down valve was provided with when often opening piston and the be in high some position outer liquid head piece of sealing often opens the O-ring seals group, and the described O-ring seals group of often opening comprises and is in high when putting the position and the last sealing ring that is sealed and matched of movable cylinder sleeve and the lower seal that is sealed and matched with lower contact when often opening piston.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920309169XU CN201507279U (en) | 2009-08-28 | 2009-08-28 | Separate-acidification hydraulic switch as well as upper valve and lower valve thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920309169XU CN201507279U (en) | 2009-08-28 | 2009-08-28 | Separate-acidification hydraulic switch as well as upper valve and lower valve thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201507279U true CN201507279U (en) | 2010-06-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920309169XU Expired - Fee Related CN201507279U (en) | 2009-08-28 | 2009-08-28 | Separate-acidification hydraulic switch as well as upper valve and lower valve thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201507279U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106522918A (en) * | 2016-10-31 | 2017-03-22 | 中国石油集团川庆钻探工程有限公司 | Test operation tubular column capable of realizing direct-push kill well and stratum test method thereof |
-
2009
- 2009-08-28 CN CN200920309169XU patent/CN201507279U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106522918A (en) * | 2016-10-31 | 2017-03-22 | 中国石油集团川庆钻探工程有限公司 | Test operation tubular column capable of realizing direct-push kill well and stratum test method thereof |
| CN106522918B (en) * | 2016-10-31 | 2020-04-10 | 中国石油集团川庆钻探工程有限公司 | Test operation tubular column capable of realizing direct-push kill well and stratum test method thereof |
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