CN118815405B - A combined casing shaping tool with detachable cutter - Google Patents
A combined casing shaping tool with detachable cutter Download PDFInfo
- Publication number
- CN118815405B CN118815405B CN202411303420.7A CN202411303420A CN118815405B CN 118815405 B CN118815405 B CN 118815405B CN 202411303420 A CN202411303420 A CN 202411303420A CN 118815405 B CN118815405 B CN 118815405B
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- shaping
- righting
- milling
- milling cutter
- hydraulic
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- 238000007493 shaping process Methods 0.000 title claims abstract description 90
- 238000003801 milling Methods 0.000 claims abstract description 139
- 238000001125 extrusion Methods 0.000 claims abstract description 14
- 238000013016 damping Methods 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 9
- 238000007789 sealing Methods 0.000 claims description 9
- 229910000831 Steel Inorganic materials 0.000 claims description 8
- 241000242541 Trematoda Species 0.000 claims description 8
- 239000010959 steel Substances 0.000 claims description 8
- 238000004873 anchoring Methods 0.000 claims description 5
- 230000000694 effects Effects 0.000 claims description 5
- 230000035939 shock Effects 0.000 claims description 2
- 238000005299 abrasion Methods 0.000 abstract description 4
- 230000009471 action Effects 0.000 abstract description 3
- 230000008439 repair process Effects 0.000 abstract description 3
- 241000935974 Paralichthys dentatus Species 0.000 description 20
- 238000005553 drilling Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 239000012530 fluid Substances 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 238000004880 explosion Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 210000000078 claw Anatomy 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B29/00—Cutting or destroying pipes, packers, plugs or wire lines, located in boreholes or wells, e.g. cutting of damaged pipes, of windows; Deforming of pipes in boreholes or wells; Reconditioning of well casings while in the ground
- E21B29/10—Reconditioning of well casings, e.g. straightening
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B23/00—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
- E21B23/04—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells operated by fluid means, e.g. actuated by explosion
- E21B23/0411—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells operated by fluid means, e.g. actuated by explosion specially adapted for anchoring tools or the like to the borehole wall or to well tube
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
The invention discloses a combined sleeve shaping tool with a detachable cutter, which is designed to improve the efficiency and reliability of repair operation after the damage of an oil-gas field sleeve. The tool mainly comprises an extrusion shaping part, a milling shaping part, a righting part, a hydraulic part and a hydraulic anchor. The shaping head in the extrusion shaping part is connected with the hydraulic piston in the device through threads, and the shaping head axially moves under the action of internal pressure to extrude and shape the deformation part of the sleeve, so that shaping force is increased. And then, the detachable annular milling cutter connected to the outer part of the milling cylinder body through the bolt is used for primarily milling the sleeve after the extrusion shaping head passes through, and the detachable rectangular milling cutter connected to the outer part of the milling cylinder body through the pin shaft can be used for more finely milling the sleeve, so that the shaping of the deformed sleeve is realized, the times of starting and tripping to replace different shaping tools are reduced, the replacement of the milling cutter after abrasion is easy, and the efficiency of sleeve shaping work in an oil and gas field is improved.
Description
Technical Field
The invention belongs to the technical field of well repair tools in the petroleum industry, and particularly relates to a combined casing shaping tool combining extrusion and milling.
Background
In the production process of oil and gas fields, the underground casing is deformed and damaged to different degrees due to engineering or geology and the like, so that the normal production work of the oil and gas fields is seriously influenced, and in recent years, due to the rapid development of the petroleum industry, the high-efficiency well repairing tool is urgently needed to recover the normal production work for old well damaged due to casing deformation caused by technical reasons, so that the requirement of repairing the well damaged by using the casing shaping tool is increasingly increased.
The present utility model relates to a method for shaping a sleeve shaping tool, which is mainly divided into three types of mechanical shaping, explosion shaping and milling shaping, such as a milling shaping principle is adopted by the Chinese patent No. 118187731A, a mechanical expanding milling and centering mode using a hydraulic system as power is adopted, the tool has a telescopic function, the Chinese patent No. 217897806U discloses a high-efficiency hydraulic shaper for repairing a deformed sleeve well, the mechanical shaping principle is adopted, the problems of sleeve damage and sleeve rebound after repair of the sleeve shaping tool are solved, the Chinese patent No. 113047799B discloses an explosion sleeve shaping tool, and an explosion sleeve shaping tool capable of being lowered for one time and shaped at multiple points is provided.
Disclosure of Invention
The invention aims to provide a combined sleeve shaping tool with a detachable cutter, which solves the problems of single shaping mode, low shaping success rate and high replacement cost after cutter abrasion of the traditional sleeve shaping tool.
To achieve the above object, the present invention provides a combined "extrusion" and "milling" casing swage tool with easy replacement of milling tools, including extrusion swage sections, milling swage sections, hydraulic sections, centralizer sections, hydraulic anchors.
The extrusion shaping part structure comprises a shaping head, wherein a shaping steel ball is embedded in the outer surface of the shaping head, and internal threads are machined in the shaping head.
Preferably, four groups of shaping steel balls are uniformly distributed along the circumferential direction, and each group extends in an axial spiral manner.
The milling shaping part structure comprises an annular milling cutter, an annular milling cutter connecting bolt, rectangular milling cutters, a pin shaft and a milling barrel body, wherein a piston channel is arranged inside the milling barrel body, an internal thread is arranged on the upper portion of the milling barrel body, threaded holes are distributed on the outer surface of the lower portion of the milling barrel body along the circumferential direction, rectangular milling cutter grooves are uniformly distributed on the upper portion of the milling barrel body along the circumferential direction and used for placing the rectangular milling cutters, and through holes are formed in the two side surfaces of each rectangular milling cutter groove and the side surfaces of each rectangular milling cutter.
Preferably, the annular milling cutter is fixed on the outer surface of the milling cylinder body by using the annular milling cutter connecting bolt, so that the annular milling cutter is convenient to replace after being worn.
Preferably, the annular milling cutter is in a thin-wall cylinder shape, a step hole is formed in the side surface of the annular milling cutter along the circumferential direction, the annular milling cutter is used for being fixed on the outer surface of the milling cylinder body through the connecting bolt of the annular milling cutter, milling blades are uniformly distributed on the outer surface of the annular milling cutter along the circumferential direction, and the annular milling cutter extends spirally along the axial direction.
Preferably, the rectangular milling cutter is fixed in the rectangular milling cutter groove by using the pin shaft, so that the rectangular milling cutter can be replaced after being worn.
Preferably, the rectangular milling cutter body is cuboid, the upper surface of the rectangular milling cutter body is provided with a milling cutter edge, and the side surface of the rectangular milling cutter body is provided with a through hole for the pin shaft to pass through.
The centering part structure comprises a centering shell, a centering block, a damping plate spring, a centering shell connecting bolt, a centering ball baffle and a centering ball baffle bolt, wherein the centering shell is in a quarter cylinder shape, through holes are formed in two side surfaces of the centering shell, deep grooves are formed in the through holes and used for placing the centering block and the damping plate spring, and the damping plate spring is placed between the centering block and the centering shell and can play a certain damping role in the centering process.
Preferably, the damper leaf spring may be assembled by overlapping a plurality of damper leaf springs to enhance the damper effect.
Preferably, the centralizing shell connecting bolts can connect the centralizing shells through holes on two sides of the centralizing shells, and the centralizing blocks and the damping plate springs are arranged between two adjacent centralizing shells.
Preferably, the outer surface of the centralizing block is provided with a round groove for placing the centralizing ball.
Preferably, the centralizing ball baffle is fixed on the centralizing block through a centralizing ball baffle bolt, and the centralizing ball is fixed in a circular groove of the centralizing block baffle.
The hydraulic part structure comprises a hydraulic piston, a piston spring and a hydraulic cylinder body, wherein conical threads are machined at two end parts of the hydraulic cylinder body, torque is easy to transfer, the hydraulic cylinder body has good sealing performance, air holes are uniformly distributed in the side surface of the hydraulic cylinder body along the circumferential direction, and a step surface is machined in the side surface of the hydraulic cylinder body and used for placing the piston spring.
Preferably, the hydraulic piston is in a step shaft shape, an external thread is arranged at the shaft end of the hydraulic piston and is in threaded connection with the shaping head, and a through flow passage is machined in the hydraulic piston.
Preferably, the piston spring is arranged between the hydraulic cylinder body and the two step surfaces of the hydraulic piston, and plays a limiting role on the piston spring.
The hydraulic anchor is connected to the upper part of the hydraulic part through threads, and plays an anchoring role in the whole tool during the shaping process.
Preferably, the hydraulic anchor is provided with 18 flukes distributed along the circumferential direction, so that the anchoring force is greatly increased, and a certain centralizing effect can be achieved at low pressure.
Therefore, the invention can realize continuous and efficient shaping of the deformed sleeve, effectively solves the defects of single shaping mode, low shaping success rate and high replacement cost after tool abrasion of the traditional shaping tool, and improves the efficiency of sleeve repairing work in oil and gas fields.
Drawings
FIG. 1 is a 1/4 section view of an axial measurement of a tool-removable combination box nose shaping tool of the present invention;
FIG. 2 is a schematic view of a plastic head according to the present invention;
FIG. 3 is a schematic view of the annular milling cutter of the present invention;
FIG. 4 is a schematic view of a rectangular milling cutter according to the present invention;
FIG. 5 is a schematic view of a centralizing housing of the present invention;
FIG. 6 is a schematic diagram of a righting block in accordance with the present invention;
FIG. 7 is a schematic view of a centralizer ball baffle of the present invention;
FIG. 8 is a schematic view of a shock absorbing leaf spring of the present invention;
FIG. 9 is a schematic view of a milling bowl according to the present invention;
FIG. 10 is a schematic view of a hydraulic cylinder of the present invention;
FIG. 11 is a schematic view of a hydraulic piston of the present invention;
FIG. 12 is a schematic illustration of a body of a hydraulic anchor according to the present invention;
FIG. 13 is a schematic view of a hydraulic anchor baffle according to the present invention;
fig. 14 is a schematic view of a fluke according to the present invention.
Reference numeral 1-shaping head; 2-shaping the steel ball; 3-milling cylinder sealing ring, 4-annular milling cutter, 5-annular milling cutter connecting bolt, 6-rectangular milling cutter, 7-pin shaft, 8-righting casing connecting bolt, 9-righting casing, 10-righting block, 11-righting ball baffle bolt, 12-righting ball, 13-righting ball baffle, 14-damping plate spring, 15-milling cylinder, 16-hydraulic cylinder, 17-piston spring, 18-hydraulic piston, 19-hydraulic piston sealing ring, 20-hydraulic anchor main body, 21-hydraulic anchor baffle bolt, 22-hydraulic anchor baffle, 23-outer spring, 24-inner spring, 25-anchor claw, 26-anchor claw sealing ring, 27-shaping head thread, 28-water eye runner, 29-annular milling cutter step hole, 30-annular milling cutter inner wall, 32-chip removal groove, 33-rectangular milling cutter edge, 34-rectangular milling casing connecting hole, 35-righting casing connecting hole, 36-righting block fixing groove, 37-righting step groove, 38-righting casing inner wall, 39-righting ball baffle hole, 40-righting plate spring, 45-righting ball baffle hole, 45-46-annular cutter step hole, 46-righting ball baffle hole, 43-righting ball baffle hole, 46-annular milling cutter step hole, 46-righting plate spring, and 46-righting ball baffle plate spring, and 43-righting cutter step hole The hydraulic anchor comprises a body seal groove, a 51-piston channel, a 52-hydraulic cylinder internal thread, a 53-piston cavity, a 54-air hole, a 55-piston cavity step, a 56-hydraulic cylinder external thread, a 57-process groove, a 58-hydraulic piston seal groove, a 59-piston step surface, a 60-piston runner, a 61-piston internal thread, a 62-piston external thread, a 63-hydraulic anchor internal thread, a 64-hydraulic anchor runner, a 65-fluke groove, a 66-hydraulic anchor baffle bolt hole, a 67-hydraulic anchor external thread, a 68-hydraulic anchor baffle groove, a 69-hydraulic anchor baffle fixing hole, a 70-fluke limit surface, 71-fluke teeth, a 72-fluke spring groove, a 73-fluke inner wall and a 74-fluke seal groove.
Detailed Description
The present invention will be further described in detail with reference to the following examples, which are provided to illustrate the present invention and not to limit the present invention, for the purpose of making the objects, technical solutions and advantages of the present invention more apparent.
The embodiment describes a combined casing shaping tool with a detachable cutter, which is characterized in that a main structure of the combined casing shaping tool with the detachable cutter comprises an extrusion shaping part, a milling shaping part, a centralizing part, a hydraulic part and a hydraulic anchor, and the specific structure is shown in the attached figure 1 of the specification.
The extrusion shaping part structure comprises a shaping head 1, the specific structure of the extrusion shaping part structure is shown in the accompanying drawing 2, a plurality of shaping steel balls 2 are inlaid on the outer surface of the shaping head 1, 6 groups of shaping steel balls 2 are uniformly distributed along the circumferential direction of the outer surface of the shaping head 1, the shaping steel balls 2 in each group are spirally extended along the axial direction, the sleeves with different deformation degrees can be extruded and shaped step by step, the shaping head 1 can play a role in guiding the whole tool, the inside of the shaping head 1 is provided with water hole flow channels 28, 6 water hole flow channels 28 are uniformly distributed along the circumferential direction of the inside of the shaping head 1 and extend to the outer surface of the shaping head 1, the inside of the tool is communicated with an annular space between the sleeves, drilling fluid is discharged from the inside of the tool to the annular space through the water hole flow channels 28 in the working process of the tool, the functions of throttling and pressurizing, the flushing and cooling functions of the sleeves in the shaping process can be realized, and the iron filings generated by milling can be circulated to the wellhead for discharging.
The main structure of the milling part comprises a milling cylinder body 15, an annular milling cutter 4 and a rectangular milling cutter 6.
The specific structure of the milling cylinder 15 is shown in fig. 9 of the specification, a piston channel 51 is arranged in the milling cylinder, a channel is provided for axial movement of a hydraulic piston 18, a double-layer milling cylinder sealing groove 50 is arranged at the lower part of the piston channel 51, sealing of the inside of the milling cylinder 15 is achieved, 4 annular milling cutter bolt holes 49 are uniformly distributed on the outer surface of the lower part of the milling cylinder 15 along the circumferential direction and are used for fixing annular milling cutters 4 on the outer surface of the milling cylinder 15 and facilitating replacement after abrasion of the annular milling cutters 4, 4 rectangular milling cutter grooves 47 are uniformly distributed on the outer surface of the middle part of the milling cylinder 15 along the circumferential direction, and pin fixing holes 48 are formed in two side surfaces of each rectangular milling cutter groove 47 and are used for fixing rectangular milling cutters 6 in each rectangular milling cutter groove 47.
Referring to fig. 3 in the specification, the specific structure of the annular milling cutter 4 is shown, 4 annular milling cutter blades 30 are uniformly distributed on the outer surface of the annular milling cutter 4 along the circumferential direction, each annular milling cutter blade 30 extends spirally along the axial direction, annular milling cutter stepped holes 29 are formed between the annular milling cutter blades 30 and are matched with the annular milling cutter stepped holes 29 on the milling cylinder 15 coaxially, and the annular milling cutter 4 is fixed on the milling cylinder 15 by using an annular milling cutter connecting bolt 5, so that the annular milling cutter 4 can realize preliminary milling shaping of a deformed sleeve.
The specific structure of the rectangular milling cutter 6 is shown in fig. 4 of the specification, a rectangular milling cutter fixing hole 34 is formed in the side surface of the rectangular milling cutter 6, the rectangular milling cutter fixing hole can be fixed in a rectangular milling cutter groove 47 by a pin shaft 7, and a rectangular milling cutter edge 33 is arranged on the upper surface of the rectangular milling cutter 6, so that further milling and shaping of the deformed sleeve can be realized.
The main structure of the centralizing part comprises a centralizing shell 9, a centralizing block 10, a damping plate spring 14, a centralizing ball 12 and a centralizing ball baffle 13.
The specific structure of the centralizing shell 9 is shown in the attached drawing 5 of the specification, in the assembly process, the centralizing shell inner walls 38 of 4 centralizing shells 9 are closely attached to the small-diameter section 46 of the milling cylinder body, two adjacent centralizing shells 9 are connected through centralizing shell connecting holes 35 formed in two side faces of the centralizing shells through centralizing shell connecting bolts 8, centralizing block fixing grooves 36 and damping plate spring fixing steps 37 are machined in the side faces of the centralizing shells 9, the side faces of centralizing blocks 10 are closely attached to the centralizing block fixing grooves 36, radial limiting is carried out by means of centralizing block steps 41, and damping plate springs 14 are placed on the damping plate spring fixing steps 37, so that a damping effect can be achieved in the centralizing process.
The specific structure of the righting block 10 is shown in fig. 6 of the specification, three righting ball round grooves 40 are machined on the upper surface of the righting block, and are used for placing the righting balls 12, and two righting block bolt holes 39 are formed in the righting block, so that the righting ball baffle 13 is fixed by using the righting ball baffle bolts 11.
The specific structure of the centralizing ball baffle 13 is shown in fig. 7 of the specification, two centralizing ball baffle bolt holes 42 are formed in the centralizing ball baffle, and three centralizing ball limiting holes 43 are formed in the centralizing ball baffle for limiting the centralizing ball 12.
The specific structure of the damping plate spring 14 is shown in fig. 8 of the specification.
The main structure of the hydraulic part comprises a hydraulic cylinder 16, a hydraulic piston 18 and a piston spring 17.
The hydraulic cylinder 16 has a specific structure shown in fig. 10, wherein the lower part of the hydraulic cylinder 16 is provided with a hydraulic cylinder external thread 56 which is in threaded connection with the milling cylinder body 15, the upper part of the hydraulic cylinder 16 is provided with a hydraulic cylinder internal thread 52 which is in threaded connection with an anchoring part, a piston cavity step 55 is arranged in a piston cavity 53 in the hydraulic cylinder 16 and used for placing a piston spring 17, 4 air holes 54 which are uniformly distributed along the circumferential direction are arranged in the piston cavity 53, and a process groove 57 is arranged on the outer surface of the hydraulic cylinder 16 so as to facilitate the assembly of the subsequent hydraulic cylinder 16.
The hydraulic piston 18 is provided with a stepped shaft section at the upper part and a hydraulic piston seal groove 58, the hydraulic piston 18 is placed in the piston cavity 53 and is fixed with the piston cavity step 55 in the piston cavity 53 by means of the upper end piston step surface 59 in the assembly process, the lower end of the hydraulic piston 18 is provided with a piston external thread 62 for being in threaded connection with the shaping head 1 and transmitting axial thrust to the shaping head 1 for extrusion shaping, the hydraulic piston 18 is internally provided with a piston runner 60 for circulation of drilling fluid, and the upper part of the hydraulic piston is provided with a piston internal thread 61, so that series connection of a plurality of hydraulic pistons 18 can be realized under the condition of insufficient shaping force.
The main structure of the hydraulic anchor comprises a hydraulic anchor main body 20, flukes 25, a hydraulic anchor baffle 22, an inner spring 24 and an outer spring 23.
The hydraulic anchor main body 20 is specifically structured according to fig. 12 of the specification, the lower end of the hydraulic anchor main body 20 is provided with a hydraulic anchor external thread 67 which is connected with the hydraulic cylinder 16 through threads, the upper end of the hydraulic anchor main body is provided with a hydraulic anchor internal thread 63 which can transmit torque of an upper pipe column to the whole tool, 18 fluke grooves 65 are circumferentially distributed on the side surface of the hydraulic anchor main body 20 and are used for placing flukes 25, every 2 fluke grooves 65 are axially adjacent and share one hydraulic anchor baffle groove 68, two hydraulic anchor baffle bolt holes 66 are processed in the hydraulic anchor baffle groove 68, the bottom of the fluke grooves 65 are opened and connected with a hydraulic anchor runner 64, so that high-pressure drilling fluid acts on the bottom surface of the flukes 25 and pushes the flukes out the flukes along the radial direction, the flukes 25 are contacted with the inner wall of a sleeve, and the whole tool is anchored in the sleeve.
The specific structure of the fluke 25 is shown in fig. 14 of the specification, a fluke sealing groove 74 is formed in the side face of the fluke 25 to ensure sealing so that the fluke 25 can extend smoothly, a fluke spring groove 72 is formed in the fluke 25 and used for placing an inner spring 24 and an outer spring 23, the inner spring and the outer spring retract the fluke 25 after pressure relief under the limit of a hydraulic anchor baffle 22, fluke teeth 71 are arranged at the top of the fluke 25 and can reliably anchor the whole tool, and a fluke inner wall 73 is formed in the fluke 25 and is attached to a fluke limiting surface 70 in the hydraulic anchor baffle 22, so that rotation of the fluke 25 is limited.
The hydraulic anchor baffle 22 has a specific structure shown in fig. 13 of the specification, and the hydraulic anchor baffle 22 is fixed in the hydraulic anchor baffle groove 68 by penetrating the hydraulic anchor baffle bolt 21 through a hydraulic anchor baffle fixing hole 69 machined on the surface of the hydraulic anchor baffle bolt, so that the limit of the fluke 25 and the inner spring and the outer spring is realized.
Working principle:
The tool is connected to the drill rod, and is lowered into an oil-gas well requiring sleeve shaping along with the drill rod, the lowering is stopped after the lowering meets a resistance, the tubular column is lifted to a proper position, a ground pump truck starts to add high-pressure drilling fluid into the tubular column, the high-pressure drilling fluid generates a throttling effect at a water hole flow passage 28 in the shaping head 1, so that a pressure drop is generated between the interior of the tool and an external annular space, and the fluke 25 is pushed to extend radially, so that the whole tool is anchored in the sleeve.
The hydraulic piston 18 is then axially moved under pressure to push the swage head 1 forward and squeeze the inside wall of the deformed sleeve, and in view of the fact that it may be difficult to squeeze a single hydraulic part of the tool for a deformed sleeve with a large swage force required, a series connection of multiple hydraulic parts may be used to increase swage force, and the internal piston threads 61 machined in the upper portion of the hydraulic piston 18 also facilitate the series connection of multiple hydraulic pistons 18.
After the shaping head 1 passes shaping, the ground pump truck reduces pressurization, at the moment, the hydraulic piston 18 drives the shaping head 1 to retract under the action of the piston spring 17, and the fluke 25 also retracts under the action of the inner spring and the outer spring, so that anchoring is released.
And then starting to rotate the tool, slowly lowering the tool after the target drilling speed is reached, starting to mill and reshape the deformed sleeve for the first time by the annular milling cutter 4, performing finer milling and reshaping on the deformed sleeve by the rectangular milling cutter 6 after the annular milling cutter 4 passes through milling, and gradually stopping rotating the tool after the whole tool passes through the deformed position of the sleeve smoothly, thereby completing reshaping work on the deformed sleeve.
Claims (4)
1. The combined sleeve shaping tool with the detachable cutter is characterized by comprising an extrusion shaping part, a milling shaping part, a hydraulic part, a righting part, a hydraulic part and a hydraulic anchor; the milling shaping part comprises an annular milling cutter, an annular milling cutter connecting bolt, a rectangular milling cutter, a pin shaft and a milling barrel, wherein a piston channel is arranged in the milling barrel, an inner thread is arranged at the upper part of the milling barrel, threaded holes are distributed on the outer surface of the lower part of the milling barrel along the circumferential direction, the annular milling cutter is fixed on the outer surface of the milling barrel through the annular milling cutter connecting bolt, the annular milling cutter is in a thin-wall cylinder shape, and a step hole is arranged on the side surface of the annular milling cutter along the circumferential direction and is used for fixing the annular milling cutter connecting bolt on the outer surface of the milling barrel; the outer surface of the annular milling cutter is uniformly distributed with milling blades along the circumferential direction and extends spirally along the axial direction, the upper part of the milling cylinder is uniformly distributed with rectangular milling cutter grooves along the circumferential direction for placing the rectangular milling cutter, through holes are formed on two side surfaces of the rectangular milling cutter grooves and the side surfaces of the rectangular milling cutter, the pin shafts are used for fixing the rectangular milling cutter in the rectangular milling cutter grooves, the rectangular milling cutter main body is a cuboid, the upper surface of the rectangular milling cutter main body is provided with milling blades, the righting part comprises a milling cylinder, a righting shell, a righting block, a damping plate spring, a righting shell connecting bolt, a righting ball baffle plate and a righting ball baffle bolt, the righting shell is a quarter cylinder and is tightly attached to the upper part of the milling cylinder, through holes are formed on two side surfaces of the rectangular milling cutter grooves and are provided with deep grooves for placing the righting block and the damping plate spring, the damping plate spring is placed between the righting block and the righting shell, can play certain cushioning effect at righting in-process, righting casing connecting bolt accessible righting the through-hole of piece both sides face is connected the polylith righting casing, has placed between the adjacent two righting casings righting the piece with the shock attenuation leaf spring, righting the piece surface and being equipped with the circular slot for placing righting the ball, righting and being equipped with the through-hole on the ball baffle to open there is the step hole, be used for righting ball baffle bolt with it be fixed in righting the piece surface, and will righting the ball be fixed in right in the piece circular slot.
2. The tool-detachable combined sleeve shaping tool of claim 1, wherein the extrusion shaping part comprises a shaping head, the shaping head is conical, shaping steel balls are embedded on the surface of the shaping head, 6 groups of shaping steel balls are uniformly distributed along the circumferential direction, each group is axially and spirally embedded on the surface of the shaping head, and internal threads are arranged inside the shaping head.
3. The tool of claim 1, wherein the hydraulic part comprises a hydraulic piston, a piston spring and a hydraulic cylinder, conical threads are formed at two end parts of the hydraulic cylinder, torque is easy to transmit, the hydraulic cylinder has a certain sealing property, air holes are uniformly distributed on the side surface of the hydraulic cylinder along the circumferential direction, a step surface is formed in the side surface of the hydraulic cylinder and used for placing the piston spring, the hydraulic piston is in a step shaft shape, an external thread is arranged at the shaft end of the hydraulic piston and is in threaded connection with the shaping head, a through flow passage is formed in the hydraulic piston, and the piston spring is placed between the hydraulic cylinder and the two step surfaces of the hydraulic piston.
4. The tool-detachable combined sleeve shaping tool as set forth in claim 1, wherein the hydraulic anchor is connected to the upper portion of the extrusion shaping portion by threads, and 18 flukes are circumferentially distributed on the hydraulic anchor, so that the anchoring force is greatly increased, and the hydraulic anchor can perform a certain righting function under low pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202411303420.7A CN118815405B (en) | 2024-09-19 | 2024-09-19 | A combined casing shaping tool with detachable cutter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202411303420.7A CN118815405B (en) | 2024-09-19 | 2024-09-19 | A combined casing shaping tool with detachable cutter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN118815405A CN118815405A (en) | 2024-10-22 |
| CN118815405B true CN118815405B (en) | 2025-04-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202411303420.7A Active CN118815405B (en) | 2024-09-19 | 2024-09-19 | A combined casing shaping tool with detachable cutter |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110593794A (en) * | 2019-10-19 | 2019-12-20 | 海塔石油科技有限公司 | Anchoring type hydraulic sleeve shaping tool |
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| CA2776158C (en) * | 2009-10-01 | 2014-05-13 | Baker Hughes Incorporated | Wellbore milling tool with wear pad |
| CN101942979B (en) * | 2010-09-01 | 2013-07-10 | 大港油田集团有限责任公司 | Anchoring ball type casing truing unit and truing method thereof |
| US9109417B2 (en) * | 2012-06-27 | 2015-08-18 | Odfjell Well Services Europe As | Drill string mountable wellbore cleanup apparatus and method |
| CN103775014B (en) * | 2012-12-14 | 2017-07-11 | 贵州高峰石油机械股份有限公司 | A kind of oil field well milling junk mill |
| CN209179704U (en) * | 2018-12-12 | 2019-07-30 | 中国石油集团渤海石油装备制造有限公司 | A self-positioning screw drill centralizer |
| CN112709556B (en) * | 2019-10-24 | 2022-12-06 | 中国石油化工股份有限公司 | Rapid well completion pipe string for offshore oilfield water injection well and construction method |
| CN115822497A (en) * | 2022-12-09 | 2023-03-21 | 南智（重庆）能源技术有限公司 | casing restorer |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110593794A (en) * | 2019-10-19 | 2019-12-20 | 海塔石油科技有限公司 | Anchoring type hydraulic sleeve shaping tool |
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