CN110617021A - Water injection well blanking plug release fishing device - Google Patents
Water injection well blanking plug release fishing device Download PDFInfo
- Publication number
- CN110617021A CN110617021A CN201810627734.0A CN201810627734A CN110617021A CN 110617021 A CN110617021 A CN 110617021A CN 201810627734 A CN201810627734 A CN 201810627734A CN 110617021 A CN110617021 A CN 110617021A
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- Prior art keywords
- head
- fishing
- release
- plug
- boss
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 52
- 238000002347 injection Methods 0.000 title claims abstract description 39
- 239000007924 injection Substances 0.000 title claims abstract description 39
- 210000004907 gland Anatomy 0.000 claims description 17
- 210000000078 claw Anatomy 0.000 claims description 5
- 230000006835 compression Effects 0.000 claims description 4
- 238000007906 compression Methods 0.000 claims description 4
- 238000001125 extrusion Methods 0.000 claims description 3
- 230000004308 accommodation Effects 0.000 claims description 2
- 238000003825 pressing Methods 0.000 description 7
- 238000010276 construction Methods 0.000 description 6
- 230000009471 action Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000011084 recovery Methods 0.000 description 4
- 239000000243 solution Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002332 oil field water Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000008093 supporting 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
- E21B23/00—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
-
- 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
- E21B31/00—Fishing for or freeing objects in boreholes or wells
- E21B31/12—Grappling tools, e.g. tongs or grabs
- E21B31/18—Grappling tools, e.g. tongs or grabs gripping externally, e.g. overshot
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)
- Marine Sciences & Fisheries (AREA)
Abstract
The invention discloses a water injection well blanking plug release fishing device, which comprises a connector, an outer barrel, a release head and a fishing head, wherein the upper end of the outer barrel is in threaded connection with the connector; the fishing device is characterized in that the upper half section of the expansion rod is in threaded connection with a central threaded hole of the connector, the lower half section of the expansion rod extends into the fishing head, an expansion boss is arranged on the inner wall of the fishing head, the inner diameter of the expansion boss is smaller than the outer diameter of the lower end of the expansion rod, a fishing head hook-shaped hanging table used for clamping the fishing rod of the umbrella-shaped hanging table of the blanking plug is arranged on the inner wall of the lower end of the fishing head, and a release head is arranged in a space between the inside of the outer barrel and the outside of the fishing head. The invention can complete the work of putting the plug in the water distributor on one layer and fishing out the plug in the water distributor on the other layer at the same time when the well is put down once.
Description
Technical Field
The invention relates to the technical field of replacing a stopper in a water distributor of an oil field layered water injection well, in particular to a releasing and fishing device for the stopper of the water injection well.
Background
At present, in the layer water injection well changes blanking plug work progress, the ware is dragged for to use only single input or salvage the function, so when the construction of blanking plug in the multilayer water injection well needs to be changed, need will drag for the ware many times and play the well head, repeated transfer again, lift and drag for the change construction that the blanking plug just can be accomplished to the ware, and the putting head in on the ware of dragging for before often appears the blanking plug phenomenon of droing when putting the blanking plug, it is also because the design is unreasonable to drag for the head, the reliability of use is poor, drag for the blanking plug not, cause the repeated construction, influence oil field production.
Application No.: 201721299316.0, published 2018-05-04 discloses a blanking plug pressure feeding head and a blanking plug casting and fishing device using the blanking plug pressure feeding head, so as to solve the problem that the blanking plug is easy to fall off due to the fact that the clamping area of the pressure feeding head is small in the prior art. The blanking plug pressure feeding head comprises an upper connector and a lower barrel, wherein the upper connector is used for being connected with a throwing and fishing device, the lower barrel is detachably connected with the upper connector along the vertical direction, an elastic rubber barrel is fixedly pressed and arranged between the upper connector and the lower barrel along the vertical direction, and the elastic rubber barrel is provided with a clamping hole wall which is elastically deformed when the blanking plug extends in so as to clamp the blanking plug. Compared with the prior art that the blanking plug is clamped by adopting a rigid structure, the clamping area is the whole area of the clamping hole wall, the clamping area is increased, the elastic deformation is larger than the deformation of the rigid structure, and the elastic rubber cylinder is not easy to generate plastic deformation to cause clamping failure, so that the blanking plug cannot fall off. The upper joint and the lower cylinder body are detachably connected, and the elastic rubber cylinder can be replaced when not meeting the use requirement.
Application No.: 201410008875.6, published 2016-04-13 discloses a preset blanking plug and a throwing and fishing tool thereof.
Application No.: 201620704341.1 discloses 2016-11-30 a stopper recovery fishing tool, belonging to the technical field of stopper recovery equipment. This fishing tool comprises dabber, fishing head, fishing claw, spring pressure cap, urceolus, salvage spring and salvage the spring holder, and fishing head is installed to the one end screw thread of dabber, and the other end activity of dabber is provided with fishing claw, drags for between claw and the fishing head and install the spring through the urceolus screw thread and press the cap, and the spring is pressed the cap and is fished and be equipped with the spring of giving up through the spring holder between the claw, is equipped with the salvage spring through salvaging the spring holder between spring holder and the urceolus. The stopper recovery fishing tool is compact in structure and convenient to use, solves the problems that the existing fishing tool is complex in structure and low in recovery efficiency, and meets the requirements of enterprises for production and use.
After the above-mentioned published documents are compared with the present application in detail, the specific technical solutions and the aspects of the deep multiple technical problems and technical effects to be solved are all different. Nor have any technical indications.
Disclosure of Invention
The invention aims to provide a water injection well plug releasing and salvaging device which can complete the work of putting a plug in one water distributor layer and fishing out a plug in the other water distributor layer at the same time by one time of lowering the well when replacing a down-hole plug, thereby reducing the operation time of lifting and lowering the well and fishing so as to improve the work efficiency and the use reliability.
In order to achieve the purpose, the invention adopts the following technical scheme that the water injection well stopper release fishing device comprises a connector, an outer cylinder, a release head and a fishing head, wherein the upper end of the outer cylinder is in threaded connection with the connector, the fishing head also comprises an expansion rod, the fishing head is in a vertically through type cylinder structure, the upper end of the fishing head is in threaded connection with the lower end of the connector, the fishing head is upwards provided with at least three fishing head expansion slot from the lower end of the fishing head, the upper end of the fishing head expansion slot is provided with a fishing head crack stop hole, and the lower half section of the fishing head forms a multi-petal claw-shaped structure; the fishing device is characterized in that the upper half section of the expansion rod is in threaded connection with a central threaded hole of the connector, the lower half section of the expansion rod extends into the fishing head, an expansion boss is arranged on the inner wall of the fishing head, the inner diameter of the expansion boss is smaller than the outer diameter of the lower end of the expansion rod, a fishing head hook-shaped hanging table used for clamping the fishing rod of the umbrella-shaped hanging table of the blanking plug is arranged on the inner wall of the lower end of the fishing head, and a release head is arranged in a space between the inside of the outer barrel and the outside of the fishing head.
A return spring is sleeved on the outer wall of the fishing head, the upper end of the return spring abuts against a limiting table arranged on the inner wall of the upper end of the release head, and the lower end of the return spring abuts against an outer boss of the fishing head arranged on the outer wall of the fishing head; the connector is provided with a compression hole which is axially communicated, and the lower end of the compression hole is communicated to the upper end face of the release head.
The upper end of the expansion slot of the release head is provided with a release head crack stop hole, the inner wall of the lower end of the release head is provided with a release head inner boss used for clamping a gland groove of the blanking plug, and the whole release head forms a multi-petal claw-shaped structure.
The outer boss of the release head is arranged on the outer wall of the release head, when the outer boss of the release head is arranged on the inner wall of the outer barrel, the outer boss of the release head is in an inward extrusion state by the inner wall of the outer barrel, and when the outer boss of the release head extends out of the lower port of the outer barrel, the outer boss of the release head springs outwards to be separated from the outer barrel for extrusion.
Two symmetrical vertical plates with pin holes are arranged on the upper portion of the connector, and the space between the two vertical plates is ensured to expose the upper port of the central threaded hole of the connector.
The top surface of the expansion rod is provided with an expansion rod straight groove.
The lower end face of the expansion rod is upwards provided with a blind hole to form an inner cavity of the expansion rod, and the inner cavity of the expansion rod is an accommodation yielding space of the umbrella-shaped hanging platform fishing rod of the blanking plug.
Compared with the prior art, the invention has the following beneficial effects:
the connector of the water injection well blanking plug release fishing device is longitudinally provided with two through pressing holes and a central threaded hole with internal threads, and an expansion rod is screwed in the central threaded hole; a return spring and a release head are sequentially sleeved outside the fishing head, and one end of the upper part of the fishing head with internal threads is sleeved outside the expansion rod and then screwed at the lower end of the connector; the outer cylinder is screwed on the lower part of the connector, and the pin hole of the connector can be quickly connected with the existing throwing and fishing device through a pin. The water injection well blanking plug release fishing device adopting the structure can complete two operations of putting and fishing once when going into a well under the condition of not changing the main structure of the throwing and fishing device, has the advantages of reasonable structure, high throwing and fishing success rate, low failure rate, reliable use and the like, avoids repeated construction of throwing and fishing operation, reduces the well occupying time, reduces the production cost, can be used for releasing and fishing the blanking plug in a water distributor on the ground and in the well, and can also be used for releasing and fishing other similar underground tools.
Drawings
FIG. 1 is a schematic structural view of a water injection well plug release fishing device of the present invention;
FIG. 2 is a schematic view of the expansion rod;
FIG. 3 is a schematic view of the stopper structure;
FIG. 4 is a schematic view of a pre-release plug;
FIG. 5 is a schematic diagram of a successful configuration of the fishing plug;
FIG. 6 is a schematic view of the connecting head structure;
FIG. 7 is a top view of FIG. 6;
FIG. 8 is a schematic view of a release head;
fig. 9 is a structural schematic diagram of the fishing head.
In the figure: 1. the fishing device comprises an outer barrel, 2 a fishing head hook-shaped hanging table, 3 a release head inner boss, 4 a release head outer boss, 5 a fishing head expansion slot, 6 an expansion boss, 7 a fishing head crack stop hole, 8 a fishing head outer boss, 9 a release head, 10 a return spring, 11 a fishing head, 12 a release head crack stop hole, 13 an expansion rod, 14 a pressing hole, 15 a central threaded hole, 16 a connector, 17 a pin hole, 18 a blanking plug, 19 a blanking plug pressing cover, 20 a blanking plug pressing cover groove, 21 an umbrella-shaped hanging table fishing rod, 22 an expansion rod inner cavity and 23 an expansion rod straight groove.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 9, the present invention provides a technical solution: the water injection well plug release fishing device comprises a connector 16, an outer cylinder 1, a fishing head 11, a return spring 10, a release head 9 and an expansion rod 13;
the upper part of the connector 16 is provided with two symmetrical vertical plates with pin holes 17, the connector 16 is connected with the existing fishing device through the pin holes 17, the connector is longitudinally provided with two through pressing holes 14 for the cross screwdriver to extend into and push the release head 9 to enable the cross screwdriver to descend and extend out of the outer barrel 1 to a certain degree, a stopper 18 is installed, the center of the connector 16 is also provided with a longitudinally through central threaded hole 15 with internal threads, the expansion rod 13 is screwed into the expansion boss 6, the hook-shaped hanging table 2 of the fishing head 11 is enabled to expand outwards, the stopper 18 is convenient to take out, and the lower part of the connector 16 is provided with two-stage threads which are respectively connected with the outer barrel 1 and the fishing head 11.
The outer cylinder 1 is cylindrical, one end with internal threads is screwed on the lower part of the connector 16, and the external thread is used for limiting the degree of the external expansion size of the release head 9 and limiting the position of the plug gland groove 20 retracted by the release head inner boss 3.
The releasing head 9 is cylindrical, 4 or a plurality of uniformly distributed releasing head crack-stopping holes 12 are arranged, a gap which is vertically communicated with the bottom end is respectively arranged at the downward part of the 4 or a plurality of releasing head crack-stopping holes 12, the inward lower end in the releasing head 9 is provided with an inward boss which can be clamped in a blanking plug gland groove 20, an inner boss 3 of the releasing head can be inserted into a pressing hole 14 of a connecting head 16 by a cross screwdriver to push the releasing head 9 to move downwards and extend out of the outer barrel 1 to a certain degree, one end of a blanking plug gland 19 is forcibly inserted into an inner boss 3 of the releasing head 9, the releasing head 9 is closed after overcoming the self elasticity expansion, the inner boss 3 of the releasing head is clamped in the blanking plug gland groove 20, the cross screwdriver is released, the releasing head 9 retracts towards the inner barrel 1 under the action of a return spring 10, when the outer boss 4 of the releasing head at the lower end of the releasing head 9 retracts to the lower end surface of the outer barrel 1, due to, the releasing head 9 can not be further contracted inwards in a closed way, so that the outer boss 4 of the releasing head and the plug 18 are fixed at the outer end of the outer cylinder 1 together, the plug of the water injection well is lowered to release the fishing device to the water distributor, when the plug 18 enters the water distributor and is locked by the water distributor, the plug of the water injection well is lifted to release the fishing device, the release head 9 overcomes the elasticity of the return spring 10 to descend, when the pressure is reached to a certain degree, the release head 9 is separated from the constraint of the outer cylinder 1 and is forcedly opened by the stopper gland 19, the release head inner boss 3 of the release head 9 slides out of the blanking plug gland groove 20, the blanking plug 18 is released in the water distributor, at the same time, the release head 9 loses the support of the blanking plug gland 19, is closed inwards, when the outer edge of the outer boss 4 of the release head at the lower end of the release head 9 is closed to be smaller than the inner diameter of the outer cylinder 1, the release head 9 retracts to the original position in the outer cylinder 1 under the action of the return spring 10.
The fishing head 11 is cylindrical, and the internal thread on the upper part of the fishing head 11 is connected with the lower end of the connector 16; an outer lug boss 8 of the fishing head is arranged outside the fishing head 11 and used for preventing the return spring 10 in the release head 9 from being compressed only when the release head 9 moves downwards, and the return spring 10 cannot move downwards; the fishing head 11 is provided with 4 or a plurality of fishing head crack-stopping holes 7 which are uniformly distributed, and the 4 or a plurality of fishing head crack-stopping holes 7 are respectively provided with a fishing head expansion groove 5 which is vertically communicated with the bottom end downwards; the lower end in the fishing head 11 is provided with an inward fishing head hook-shaped hanging table 2, the upper part of the fishing head hook-shaped hanging table 2 is provided with an expansion boss 6 for expanding the inner diameter of the fishing head hook-shaped hanging table 2 at the lower end of the fishing head 11, when the fishing head hook-shaped hanging table 2 impacts an umbrella-shaped hanging table fishing rod 21 of a blanking plug 18, the fishing head 11 can be rapidly expanded and closed by using elasticity, the umbrella-shaped hanging table fishing rod 21 of the blanking plug 18 is hung by the fishing head hook-shaped hanging table 2 at the lower end in the fishing head 11, the blanking plug of a water injection well is lifted to release a fishing device, the blanking plug 18 is pulled out of a water distributor to finish fishing operation, when the blanking plug 18 on the fishing head 11 is to be taken down, the expansion rod 13 can be downwards screwed to the expansion boss 6 by using a straight line, the inner diameter of the fishing head hook-shaped hanging table 2 at the lower part of the fishing head 11 is expanded and expanded, and the blanking plug 18 can be taken out.
Consists of an expansion rod straight groove 23, screw threads and an expansion rod inner cavity 22 at the lower part. The fishing rod is screwed in a central threaded hole 15 of a connector 16, when a blanking plug 18 needs to be taken down, a straight screwdriver is used for being inserted into a straight groove 23 of an expansion rod, the expansion rod 13 is screwed to descend onto an expansion boss 6, an umbrella-shaped hanging table fishing rod 21 enters an inner cavity 22 of the expansion rod until a hook-shaped hanging table 2 of the fishing head is expanded and expanded to be large, and the blanking plug 18 is taken out.
The stopper 18 is a switch for adjusting the water injection amount during the separate-layer water injection of the water injection well, is locked in a water distributor under the water injection well, is a standard component, is sequentially provided with a fishing rod 21 with an umbrella-shaped hanging platform and a stopper gland 19 at the upper part, and is provided with a stopper gland groove 20 on the stopper gland 19.
The return spring serves to release the quick return of the head 9 after releasing the plug 18.
When the plug 18 is replaced for the oil field water injection well, the throwing and fishing device adopts special tool equipment for conveying or recovering the plug 18 in the water injection well after being connected by a cable, and can be connected with and carry releasing or fishing devices of various plugs 18.
In the embodiment shown in fig. 1, the expansion rod 13 is screwed into the central threaded hole 15 of the connector 16 of the injection well plug release fishing device; a return spring 10 is arranged on an outer boss 8 of the fishing head 11, a release head 9 is arranged on the return spring 10, and one end with internal threads at the upper part of the fishing head 11 is sleeved on the expansion rod 13 and then screwed at the lower end of the connecting head 16; the internal thread at the upper end of the outer cylinder 1 is connected with the lower part of the connecting head 16.
In the embodiment shown in fig. 4, preparation of the injection well plug release fishing device and operation of the release plug are carried out before the plug is put into construction:
preparing: a cross screwdriver is used for extending into a pressing hole 14 of a connector 16 to the upper plane of a release head 9 to push the release head 9 to move downwards, after one end of an outer boss 4 of the release head body extends out of an outer barrel 1 to a certain degree, a blanking plug gland 19 is forcibly inserted into an inner boss 3 of the release head, the release head 9 completes one expansion and closing process by utilizing the elasticity of the release head, so that the inner boss 3 of the release head is clamped in a blanking plug gland groove 20, the cross screwdriver is released, the release head 9 and a blanking plug 18 retract towards the inner barrel 1 together under the action of a return spring 10, when the outer boss 4 of the release head at the lower end of the release head 9 retracts to the lower end face of the outer barrel 1, the release head 9 cannot close and reduce the diameter due to the supporting action of the blanking plug gland 19, the outer boss 4 of the release head is larger than the inner diameter of the outer barrel 1, therefore, the outer boss 4 of the release head and the blanking, finally, connecting the pin hole 17 of the connector with the existing throwing and fishing device, and completing the assembly preparation before releasing the fishing device by the stopper of the water injection well;
when it is desired to release the plug downhole: after the water injection well plug release fishing device is lowered into a down-hole water distributor, the plug 18 is locked by the water distributor, the water injection well plug release fishing device is lifted, the release head 9 compresses the return spring 10 to descend and extends out of the outer cylinder 1 to a certain degree, the release head 9 is opened by means of the elasticity of the release head, the boss 3 in the release head slides out of the plug gland groove 20, and the plug 18 is released in the water distributor; the release head 9 is closed inwards after losing the support of the blanking plug gland 19, when the outer edge of the outer boss 4 of the release head is closed to be smaller than the inner diameter of the outer barrel 1, the release head 9 retracts to the original position in the outer barrel 1 under the action of the return spring 10, and at the moment, the fishing head 11 of the water injection well blanking plug release fishing device is exposed outside the release head 9 and is in a state capable of fishing the blanking plug.
In the embodiment shown in fig. 6, when the plug is fished: lifting the stopper of the water injection well to release the fishing device to the upper part of any stopper 18 needing fishing, then quickly lowering the stopper of the water injection well to release the fishing device, when the fishing head hook-shaped hanging platform 2 in the lower end of the fishing head 11 of the stopper releasing and fishing device strikes the umbrella-shaped hanging platform of the umbrella-shaped hanging platform fishing rod 21 of the stopper 18, the fishing head hook-shaped hanging platform 2 rapidly expands and closes by using elasticity, the umbrella-shaped hanging platform fishing rod 21 on the stopper 18 is hooked by the fishing head hook-shaped hanging platform 2 in the lower end of the fishing head 11, lifting the stopper of the water injection well to release the fishing device, and the stopper 18 is pulled out of the water distributor to finish fishing operation.
When the blanking plug 18 on the fishing head 11 is to be taken down, the connecting head 16 is detached, the expansion rod 13 is screwed downwards to the expansion boss 6 by using a straight screwdriver, and the blanking plug 18 can be taken out after the fishing head hook-shaped hanging table 2 at the lower part of the fishing head 11 is expanded and expanded.
The water injection well blanking plug release fishing device adopting the structure can complete two operations of putting and fishing once when going into a well under the condition of not changing the main structure of the throwing and fishing device, has the advantages of reasonable structure, high throwing and fishing success rate, low failure rate, reliable use and the like, avoids repeated construction of throwing and fishing operation, reduces the well occupying time, reduces the production cost, can be used for releasing and fishing the blanking plug in a water distributor on the ground and in the well, and can also be used for releasing and fishing other similar underground tools.
In the description of the present invention, it is to be understood that the positional indications or positional relationships are based on those shown in the drawings and are for the purpose of facilitating the description of the present invention, and are not intended to indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and are not to be construed as limiting the present invention.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The water injection well blanking plug release fishing device comprises a connector, an outer barrel, a release head and a fishing head, wherein the upper end of the outer barrel is in threaded connection with the connector; the fishing device is characterized in that the upper half section of the expansion rod is in threaded connection with a central threaded hole of the connector, the lower half section of the expansion rod extends into the fishing head, an expansion boss is arranged on the inner wall of the fishing head, the inner diameter of the expansion boss is smaller than the outer diameter of the lower end of the expansion rod, a fishing head hook-shaped hanging table used for clamping the fishing rod of the umbrella-shaped hanging table of the blanking plug is arranged on the inner wall of the lower end of the fishing head, and a release head is arranged in a space between the inside of the outer barrel and the outside of the fishing head.
2. The water injection well blanking plug release fishing device of claim 1, wherein a return spring is sleeved on the outer wall of the fishing head, the upper end of the return spring abuts against a limit table arranged on the inner wall of the upper end of the release head, and the lower end of the return spring abuts against an outer boss of the fishing head arranged on the outer wall of the fishing head; the connector is provided with a compression hole which is axially communicated, and the lower end of the compression hole is communicated to the upper end face of the release head.
3. The water injection well plug release fishing device according to claim 2, wherein the release head is provided with at least three release head expansion slot from the lower end surface of the release head to the upper side, the upper end of the release head expansion slot is provided with a release head crack stop hole, the inner wall of the lower end of the release head is provided with a release head inner boss for clamping a plug gland groove, and the whole release head forms a multi-petal claw structure.
4. The injection well plug release fishing device according to claim 3, wherein the outer wall of the release head is provided with an outer boss of the release head, the outer boss of the release head is in a state of being pressed inwards by the inner wall of the outer barrel when the outer boss of the release head is arranged on the inner wall of the outer barrel, and the outer boss of the release head springs outwards to be separated from the outer barrel for extrusion when the outer boss of the release head extends out of the lower port of the outer barrel.
5. The water injection well plug release fishing device according to claim 1, 2, 3 or 4, wherein the upper part of the connector is provided with two symmetrical vertical plates each having a pin hole, and a space between the two vertical plates is ensured to expose an upper port of the central threaded hole of the connector.
6. The release and fishing device for the water injection well plug according to claim 1, 2, 3 or 4, wherein the top surface of the expansion rod is provided with an expansion rod straight groove.
7. The water injection well blanking plug release fishing device of claim 1, 2, 3 or 4, wherein the lower end of the expansion rod is provided with a blind hole facing upwards to form an inner cavity of the expansion rod, and the inner cavity of the expansion rod is an accommodation abdicating space for an umbrella-shaped hanging table fishing rod of the blanking plug.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810627734.0A CN110617021B (en) | 2018-06-19 | 2018-06-19 | Water injection well blanking plug release fishing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810627734.0A CN110617021B (en) | 2018-06-19 | 2018-06-19 | Water injection well blanking plug release fishing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110617021A true CN110617021A (en) | 2019-12-27 |
| CN110617021B CN110617021B (en) | 2021-07-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810627734.0A Active CN110617021B (en) | 2018-06-19 | 2018-06-19 | Water injection well blanking plug release fishing device |
Country Status (1)
| Country | Link |
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| CN (1) | CN110617021B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113882821A (en) * | 2021-10-22 | 2022-01-04 | 大庆市博瑞吉机械设备制造有限公司 | Releasing device and releasing method for oil field downhole delivery tool |
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| CN113882821A (en) * | 2021-10-22 | 2022-01-04 | 大庆市博瑞吉机械设备制造有限公司 | Releasing device and releasing method for oil field downhole delivery tool |
| CN113882821B (en) * | 2021-10-22 | 2024-04-12 | 大庆市博瑞吉机械设备制造有限公司 | Releasing device and releasing method for underground oil field throwing tool |
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| CN110617021B (en) | 2021-07-27 |
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