CN203499611U - Gravity compensation type hydraulic anchor - Google Patents
Gravity compensation type hydraulic anchor Download PDFInfo
- Publication number
- CN203499611U CN203499611U CN201320627598.8U CN201320627598U CN203499611U CN 203499611 U CN203499611 U CN 203499611U CN 201320627598 U CN201320627598 U CN 201320627598U CN 203499611 U CN203499611 U CN 203499611U
- Authority
- CN
- China
- Prior art keywords
- main body
- central tube
- anchor fluke
- anchor
- gravity compensation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 230000005484 gravity Effects 0.000 title claims abstract description 16
- 241000935974 Paralichthys dentatus Species 0.000 claims abstract description 39
- 238000007789 sealing Methods 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 15
- 230000000694 effects Effects 0.000 abstract description 13
- 238000002347 injection Methods 0.000 abstract description 13
- 239000007924 injection Substances 0.000 abstract description 13
- 238000000034 method Methods 0.000 abstract description 7
- 238000004873 anchoring Methods 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 abstract description 4
- 238000006073 displacement reaction Methods 0.000 abstract description 3
- 238000010008 shearing Methods 0.000 abstract 1
- 239000012530 fluid Substances 0.000 description 4
- 238000012856 packing Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 241001149930 Protura <class> Species 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 235000020681 well water Nutrition 0.000 description 1
- 239000002349 well water Substances 0.000 description 1
Images
Landscapes
- Piles And Underground Anchors (AREA)
Abstract
The utility model relates to a matching device in an oil field downhole water injection technology, in particular to a gravity compensation type hydraulic anchor which is mainly characterized in that a center pipe is arranged in a main body to form the gravity compensation type hydraulic anchor, an anchor fluke is arranged in a circular hole of the main body, one end of the anchor fluke is in a frustum shape, the other end face is an arc face, a horizontal tooth and a longitudinal groove are formed, a frustum-shaped concave pit is formed in the central pipe, a through hole is formed in the bottom of the concave pit, the position of the circular hole in the main body corresponds to the position of the concave pit of the central pipe 1, and a locating key and a shearing pin are arranged between the center pipe and the main body. The gravity compensation type hydraulic anchor has the advantages that when no pressure exists in a shaft, anchoring effect can still be kept, displacement of a packer in a sleeve can be avoided, the packer can be protected, working frequency of a water injection well is reduced, labor is saved, and expenditure is saved. The anchor fluke is provided with the tooth, so that anchoring force is large, the key is arranged between the center pipe and the main body, rotating malposition cannot happen, and anchoring effect is guaranteed. During an oil pipe tripping process, using is safe, and accidents can nothappen.
Description
Technical field
The utility model relates to the corollary apparatus in a kind of oil field well water injection technology.
Background technology
When oilfield exploitation oil, need to be by water injection well to underground flooding.In order to meet the needs of water injection technology, packer is installed on oil pipe, utilize it that packing between oil pipe and sleeve pipe is lived, but in water injection well, due to fluctuation or the termination of pumping of water injection pressure, can make oil pipe jump up and down in sleeve pipe, drive packer also to collect together up and down simultaneously, time has been grown and will make packing element wearing and tearing, when serious, also can make removing seal for packer, will affect like this that water filling is working properly to be carried out.At present general adopt hydraulic anchor tubing anchor in sleeve pipe, they utilize pressure to carry out grappling, can only be in the situation that water injection pressure be continual and steady grappling oil pipe effectively, in hypotony or while there is no pressure, just can not play grappling effect, now oil pipe just can move up, when pressure raises, it can move down again, if this phenomenon repeatedly occur, also can make packing element damage or make removing seal for packer.Therefore will take the way of well operations to change packer, or base sealed packer again, will affect so the normal water filling work of water injection well, carry out operation and just need to go up equipment, increase human and material resources and workload, increase operating cost.
Utility model content
The purpose of this utility model is a kind of gravity compensation formula hydraulic anchor of design, when water injection well pressure oscillation or in the situation that there is no pressure, can keep grappling effect.
Technical solution of the present utility model is such, a kind of gravity compensation formula hydraulic anchor, by central tube 1, be arranged on that main body 4 is interior to be formed, lower end in central tube 1 upper end and main body 4 has respectively screw buckle, its special character is, on central tube 1, having cross section is truncated cone shape pit, in the bottom of pit, has through hole, in the seal groove of central tube 1, sealing ring is installed; In main body 4, there is circular hole, the position of circular hole is corresponding with the position of pit on central tube 1, anchor fluke 6 is housed in circular hole, one end section of anchor fluke 6 is truncated cone shape, and the end face of the other end is circular-arc, tool longitudinal fluting on arcuation face, in longitudinal fluting, there is round hole, in circle hole, back-moving spring 8 is installed, in the above and below of arcuation end face, there is chamfering, in the seal groove on anchor fluke 6 cylindricals, sealing ring is installed; Press strip 5 is arranged in the cannelure of anchor fluke 6, and by screw 7, press strip 5 is fixed in main body 4; Positioning key 3 is installed in the keyhole on main body 4 tops, and the inner side of positioning key 3 is arranged in the elongated slot of central tube 1, and shear pin 9 is installed in the circular hole on main body 4 tops, and the front end Shen of shear pin 9 enters in the round hole on central tube 1; Pressure cap 2 is arranged on main body 4 upper ends by screw thread.
Above-mentioned technical solution can also realize like this, on the arcuation end face of anchor fluke 6, has horizontal teeth.
Usefulness of the present utility model is that (1), owing in this device, shear pin being installed, this anchoring device can not make anchor fluke be anchored on well bore wall in the process of going into the well due to the generation of fortuitous event, in the process of guaranteeing to go into the well, do not have an accident.(2) after this device is connected to is lowered into together in well on oil pipe, can utilize the pressure of liquid and the gravity of oil pipe in pit shaft, promote anchor fluke simultaneously, anchor fluke is supported on the inwall of sleeve pipe, play the effect of grappling.When tubing string internal pressure is zero when pit shaft internal pressure fluctuates or after termination of pumping, under the effect of oil pipe gravity, still can keep grappling effect, can avoid packer displacement in sleeve pipe, protecting packer, the operation number of times of minimizing water injection well, not only saving of labor but also cost saving.(3) on the end face due to anchor fluke, there are horizontal teeth, increased the anchorage force of it and sleeve pipe, make grappling effect more reliable.(4) owing to positioning key being installed between central tube and main body, can guarantee can not rotate dislocation between them, guarantee its grappling effect.(5) in the process of lower oil tube, under the effect of spring, can make in the hole of anchor fluke indentation main body, guarantee normally carrying out of lower oil tube work, use safety, can not have an accident.Above and below at anchor fluke arcuation end face has chamfering, in the process removing, can not hang tag in sleeve pipe, guarantees to use safety.
Accompanying drawing explanation
Fig. 1 is the structural representation that partly cuts open of the present utility model.
Fig. 2 is the utility model A-A sectional drawing.
In figure, 1, central tube; 2, pressure cap; 3, positioning key; 4, main body; 5, press strip; 6, anchor fluke; 7, screw; 8, back-moving spring; 9, shear pin.
The specific embodiment
Select alloy steel material to make the parts such as central tube 1, main body 4, press strip 5, anchor fluke 6, adopt heat resistant and wear resistant rubber to make sealing ring.Top at central tube 1 has screw thread, middle and upper part there are 2 elongated key slot and 6 pin holes, on central tube 1, there is the pit that 4 row's cross sections are truncated cone shape, 5 pits of every row, conical surface is smooth, in the bottom of pit, has through hole.In main body 4, there are 4 row's manholes, 5 holes of every row, its position is corresponding one by one with the pit of truncated cone shape on central tube 1, and main body 4 upper ends have screw thread, and its both sides have 2 microscler keyholes and 6 pin holes.The end face of the left end of anchor fluke 8 is arcuation face, on arcuation face, there is horizontal teeth and longitudinal fluting, in longitudinal fluting, there are 2 round holes, the horizontal of arcuation end face is arcuation, the radius of arc is identical with the interior radius of circle of sleeve pipe, in the left side of anchor fluke 8, is respectively chamfering up and down, and the right-hand member of anchor fluke is the truncated cone, their tapering is identical with the tapering of truncated cone shape pit on central tube, and conical surface is smooth.
Sealing ring is arranged in the seal groove of central tube 1, central tube 1 is sleeved in main body 4,2 positioning keys 3 are arranged on respectively in the keyhole of main body 4 both sides, top, make in the elongated key slot of positioning key 3 inner sides (by a paracentral side) centering pipe 1, in 6 pin holes, shear pin 9 is installed respectively, shear pin 9 Shens are entered in the pin hole of central tube 1.Sealing ring is arranged in the seal groove on anchor fluke 8 cylindricals, anchor fluke 8 is arranged in the manhole of main body 4, back-moving spring 8 is arranged in the round hole of anchor fluke 6, each anchor fluke is installed 2 back-moving springs, press strip 5 is arranged in main body 4 by 6 screws 7, press strip 5 is placed in the cannelure of each anchor fluke 6, back-moving spring 8 is pushed down, and make each anchor fluke 6 corresponding with the pit on central tube 1.Pressure cap 2 is arranged on to the upper end of main body 4 by screw thread.
In the time of in lower going-into-well, by the screw buckle of central tube 1 upper end and the screw buckle of main body 4 lower ends, this device and water injection tool are connected in the middle of oil pipe, they are transferred in pit shaft together, in the process of transferring, together with due to shear pin 9, central tube 1 being positioned at main body 4, they are displacement mutually not, back-moving spring 8 to center pushing, can be guaranteed anchor fluke 6 can not be anchored on casing wall.When water injection tool is transferred to after projected depth, from oil pipe mouth water filling pressurization, liquid, through the aperture in the pit bottom on central tube 1, promotes anchor fluke 6, and it is stretched out from hole, and support, on internal surface of sleeve pipe, is now fluid power grappling.After fluid power grappling, continue again lower drain line, now shear pin 9 is cut off under the Action of Gravity Field of oil pipe, central tube 1, under lower tool and oil pipe Action of Gravity Field, moves down, and the conical surface of each truncated cone shape pit on central tube 1 all withstands the conical surface of each anchor fluke 6, the gravity of oil pipe has been passed to anchor fluke 6 by the conical surface, now anchor fluke 6 is subject to the effect of fluid power and these two kinds of power of oil pipe gravity, even if now lay down fluid pressure, also also has gravity compensation, guarantees grappling.
In the time of need to removing grappling, above carry oil pipe, on central tube 1, move, step-shaped top on central tube 1 is at the inner face of pressure cap 2, each anchor fluke 6 aligns one by one with each pit on central tube 1, and anchor fluke 6 is recovered in the hole of main body 4 under the effect of back-moving spring 8, can remove grappling.This device is in the upper process of carrying, and under the effect of back-moving spring 8, the conehead of anchor fluke 6 can be inserted in the pit on central tube 1, makes in the hole of anchor fluke 6 in main body 4, can not be stuck in sleeve pipe, can propose safely pit shaft.
Claims (2)
1. a gravity compensation formula hydraulic anchor, by central tube (1), be arranged in main body (4) and form, lower end in central tube (1) upper end and main body (4) has respectively screw buckle, it is characterized in that, on central tube (1), having cross section is truncated cone shape pit, bottom at pit has through hole, in the seal groove of central tube (1), sealing ring is installed; In main body (4), there is circular hole, the position of circular hole is corresponding with the position of pit on central tube (1), anchor fluke (6) is housed in circular hole, one end section of anchor fluke (6) is truncated cone shape, the end face of the other end is circular-arc, on arcuation face, there is longitudinal fluting, in longitudinal fluting, there is round hole, in circle hole, back-moving spring (8) is installed, above and below at arcuation end face has chamfering, in the seal groove on anchor fluke (6) cylindrical, sealing ring is installed; Press strip (5) is arranged in the cannelure of anchor fluke (6), and by screw (7), press strip (5) is fixed in main body (4); Positioning key (3) is installed in the keyhole on main body (4) top, the inner side of positioning key (3) is arranged in the elongated slot of central tube (1), shear pin (9) is installed in the circular hole on main body (4) top, and the front end Shen of shear pin (9) enters in the round hole on central tube (1); Pressure cap (2) is arranged on main body (4) upper end by screw thread.
2. gravity compensation formula hydraulic anchor according to claim 1, is characterized in that, on the arcuation end face of anchor fluke (6), has horizontal teeth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320627598.8U CN203499611U (en) | 2013-06-03 | 2013-09-29 | Gravity compensation type hydraulic anchor |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320339990.2 | 2013-06-03 | ||
| CN201320339990 | 2013-06-03 | ||
| CN201320627598.8U CN203499611U (en) | 2013-06-03 | 2013-09-29 | Gravity compensation type hydraulic anchor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203499611U true CN203499611U (en) | 2014-03-26 |
Family
ID=50330600
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320627598.8U Expired - Fee Related CN203499611U (en) | 2013-06-03 | 2013-09-29 | Gravity compensation type hydraulic anchor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203499611U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110318730A (en) * | 2019-06-25 | 2019-10-11 | 中国石油化工股份有限公司 | The multi-functional downhole probe testing stand of high-freedom degree |
-
2013
- 2013-09-29 CN CN201320627598.8U patent/CN203499611U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110318730A (en) * | 2019-06-25 | 2019-10-11 | 中国石油化工股份有限公司 | The multi-functional downhole probe testing stand of high-freedom degree |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104213868B (en) | Desirable bore anchor packer | |
| CN203285384U (en) | Top packer for preventing sand | |
| BR102013012434A2 (en) | method for using a downhole completion system, method for performing an intervention on a completion, and | |
| CN203499611U (en) | Gravity compensation type hydraulic anchor | |
| CN104929558B (en) | Fixed point takes set process | |
| CN104481394B (en) | Radial level rotary drilling flexible axle protection device | |
| CN204703811U (en) | Sand Control Hanger | |
| CN204457616U (en) | Combined oil drainage device and pipe string for horizontal well | |
| CN203905914U (en) | Drillable and recyclable high-pressure filling sand prevention tool | |
| CN203603805U (en) | Coiled tubing sand washing well-flushing tool | |
| CN104790989B (en) | Device and method for releasing anchoring of mining chemical anchor rope | |
| CN208982015U (en) | A kind of well-flushing oil drain switch | |
| CN103573193A (en) | Integrated drilling and splitting drill stem device | |
| CN203285375U (en) | Blocking gauge cutter | |
| CN201202429Y (en) | Expansion tube hanging seal device for open hole section | |
| CN205445525U (en) | A fishable downhole pressure plugging tool | |
| CN204327022U (en) | A kind of slips inserted link one lead oblique window opening tool | |
| CN201865626U (en) | Damage-free anchored oil draining device for underground pipe column | |
| CN203614067U (en) | Oil pipe supporting anchor | |
| CN203879448U (en) | Casing protected gas injection packer for CO2 injection well | |
| CN203050579U (en) | Mechanical release device for coiled tubing fracturing | |
| CN103452523A (en) | Process method for packing complex stratum by elastic casing | |
| CN202990952U (en) | Packer for combined operation of perforation and water injection | |
| CN203066952U (en) | Acid-fracturing tubular column ball socket capable of being salvaged and used repeatedly | |
| CN203879446U (en) | Hydraulic power expansion type fracture packer capable of achieving sand prevention, clamping prevention and suck-back prevention |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140326 Termination date: 20160929 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |