CN111691862A - Multifunctional underground throttle free of rope throwing and fishing - Google Patents
Multifunctional underground throttle free of rope throwing and fishing Download PDFInfo
- Publication number
- CN111691862A CN111691862A CN202010653171.XA CN202010653171A CN111691862A CN 111691862 A CN111691862 A CN 111691862A CN 202010653171 A CN202010653171 A CN 202010653171A CN 111691862 A CN111691862 A CN 111691862A
- Authority
- CN
- China
- Prior art keywords
- circumferential surface
- fishing
- air nozzle
- locking block
- outer circumferential
- 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.)
- Pending
Links
- 238000007789 sealing Methods 0.000 claims description 30
- 239000004576 sand Substances 0.000 claims description 29
- 125000006850 spacer group Chemical group 0.000 claims description 6
- 238000003825 pressing Methods 0.000 claims description 4
- 230000002265 prevention Effects 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 23
- 239000007788 liquid Substances 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 23
- 208000035208 Ring chromosome 20 syndrome Diseases 0.000 description 8
- 238000000034 method Methods 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- 208000033641 Ring chromosome 5 syndrome Diseases 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Images
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
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/12—Methods or apparatus for controlling the flow of the obtained fluid to or in 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
- 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
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/06—Valve arrangements for boreholes or wells in wells
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)
Abstract
The invention relates to the technical field of gas production in gas fields, in particular to a rope-free throwing and fishing multifunctional underground throttleer, which comprises: fishing the head; the locking block body is detachably connected to the outer circumferential surface of the fishing head, a locking block hole is formed in the outer circumferential surface of the locking block body, the locking block is connected with the locking block in a sliding mode in the locking block hole, and one side of the locking block is in contact with the outer circumferential surface of the fishing head; the limiting part is detachably connected to the top end of the locking block body, and the inner circumferential surface of the limiting part is connected with the fishing head in a sliding manner; and the air nozzle seat rod is connected with the inner circumferential surface of the fishing head in a sliding way. The invention forms a large channel by knocking off the air tap seat by the impact force of the descending plunger, and meanwhile, the throttler can be used as an underground setting device for plunger drainage and gas production measures, the throttler does not need to be fished and lowered into the underground setting device again, and the cost reduction and the efficiency improvement are obvious. A check valve is added in the restrictor, so that liquid sliding caused by downward movement of the plunger during plunger drainage gas production is prevented, and the plunger drainage gas production effect is improved.
Description
Technical Field
The invention relates to the technical field of gas production in gas fields, in particular to a rope-free throwing and fishing multifunctional underground throttleer.
Background
In natural gas production, for the purposes of pressure reduction, throttling and production limitation, a downhole choke is often installed in a gas well shaft, and the downhole choke is divided into a slip choke and a preset choke in a seat sealing mode. The slip type choke is set and anchored at any position in a production string. The preset choke is anchored in a preset working barrel which is connected to a production string and is put into the well along with the production string. The most widely used earlier in the development of the surrige gas field is the slip restrictor. The preset throttler has short sealing surface, good sealing reliability and long service life, and once the sealing section is separated from the preset working barrel, the outer diameter of the sealing section is smaller than the inner drift diameter of the production string, so that the sealing section has almost no friction resistance when being salvaged and lifted, is easy to salvage and has been gradually popularized and applied.
The problem of liquid output of gas wells of the Suliger gas field can be solved in the production process, and the phenomenon of shaft liquid accumulation in the later production period cannot be avoided. Plunger gas lift is the main technology of drainage gas production of the current low-yield gas well, and is even considered as the most economical and effective drainage gas production process of a low-yield and compact gas reservoir. When the plunger gas lift process is adopted, the throttler needs to be fished out and then is lowered into the underground setting device again to limit the maximum operation depth of the plunger. Due to the economical and effective performance of the plunger gas lift process, a plurality of demonstration areas are established, the application scale is larger and larger, and the workload of salvaging the throttler and setting the underground setter is also larger and larger.
In addition, the preset underground throttler needs to put a steel wire rope into the well during putting work, so that a large number of vehicles and personnel are needed, the operation is complex, and the putting cost is high.
The patent 'a preset underground choke without cable throwing' (patent number: ZL 201220337815.5), the choke in the choke can not be broken, and the choke needs to be salvaged out when plunger drainage gas recovery measures are taken in the later stage of production.
Disclosure of Invention
The invention provides a rope-free throwing-fishing multifunctional underground restrictor, which solves the problem that a choke in the restrictor cannot be knocked off, and realizes that a large amount of manpower and material resources are not required to be input when the choke is knocked off.
The technical problem solved by the invention can be realized by adopting the following technical scheme:
a rope-free throwing-fishing multifunctional downhole choke comprises:
fishing the head;
the locking block body is detachably connected to the outer circumferential surface of the fishing head, a locking block hole is formed in the outer circumferential surface of the locking block body, the locking block is connected with the locking block in a sliding mode in the locking block hole, and one side of the locking block is in contact with the outer circumferential surface of the fishing head;
the limiting part is detachably connected to the top end of the locking block body, and the inner circumferential surface of the limiting part is connected with the fishing head in a sliding manner;
the air nozzle seat rod is connected with the inner circumferential surface of the fishing head in a sliding way;
the supporting body is detachably connected to the lower end of the locking block body, and the top end of the supporting body is located in the locking block body and detachably connected with the air nozzle seat rod;
the air nozzle seat is detachably arranged in the support body;
the air nozzle is detachably connected in the air nozzle seat;
the top end of the pressure cap is detachably connected in the air nozzle seat, and the bottom end of the air nozzle seat is contacted with the pressure cap;
the top end of the sand control cover is detachably connected with the bottom end of the support body;
the outer circumferential surface of the check valve is in sliding connection with the inner circumferential surface of the sand prevention cover, and the inner circumferential surface of the check valve is detachably connected with the air nozzle seat;
the sand control hood, this sand control hood can be dismantled and connect in the single current valve bottom, and wall and sand control cover contact on the sand control hood.
Further, a pin I is arranged between the lock block body and the fishing head.
Furthermore, the diameter of the triggering surface on the outer circumferential surface of the fishing head is larger than the outer diameter of the fishing head, an upper placing groove is formed in the outer circumferential surface of the triggering surface, a first expandable C ring is arranged in the upper placing groove, the outer circumferential surface of the first expandable C ring is connected with the locking block body in a sliding mode, an upper limiting groove matched with the first expandable C ring is formed in the inner circumferential surface of the locking block body, and the upper limiting groove is located above the locking block.
Further, spacing portion includes the lock cap and keeps off the ring, the lock cap can be dismantled and connect at the outer periphery in lock block body top, keep off the ring cover at the first outer periphery of salvaging, and keep off the ring centre gripping between lock cap and lock block body top, it has spacing stupefied to salvage overhead opening.
Furthermore, the supporter lower extreme is provided with spacer ring and V type sealing washer, spacer ring and V type sealing washer are located the lock block body and are located under the supporter junction.
Further, be connected with pin two between supporter and the air cock seat, and the air cock seat outer periphery is provided with sealing washer one, a outer periphery of sealing washer one and the interior circumferential surface sliding connection of supporter.
Furthermore, a second sealing ring is arranged on the outer circumference of the check valve, and the outer circumferential surface of the second sealing ring is in sliding connection with the inner circumferential surface of the sand prevention cover.
Furthermore, a lower placing groove is formed in the outer wall surface of the check valve, a second expandable C ring is arranged in the lower placing groove, and a lower limiting groove matched with the second expandable C ring is formed in the inner wall surface of the sand control cover.
The invention has the beneficial effects that: the air tap seat is knocked down by the descending impact force of the plunger to form a large channel, and meanwhile, the throttler can be used as an underground setting device for plunger drainage and gas production measures, the throttler does not need to be fished and is reset into the underground setting device, and cost reduction and efficiency improvement are remarkable.
A check valve is added in the restrictor, so that liquid sliding caused by downward movement of the plunger during plunger drainage gas production is prevented, and the plunger drainage gas production effect is improved.
Drawings
The invention is further illustrated with reference to the following figures and examples.
Fig. 1 is a schematic structural view of the present invention.
FIG. 2 is a schematic representation of the downhole operation of the present invention.
Fig. 3 is a schematic view of the drainage gas recovery state of the present invention.
Fig. 4 is a schematic view of the retainer ring structure of the present invention.
FIG. 5 is a schematic view of the expandable C-ring structure of the present invention
In the figure: 1-fishing head; 2-air nozzle seat post; 3-locking the cap; 4-a baffle ring; 5-expandable ring C; 51-upper limiting groove; 6, a first pin; 7-locking the block; 8-a lock block body; 9-an air nozzle seat; 10-spacer ring; 11-V type seal ring; 12-a support; 13-pin two; 14-air tap; 15-sealing ring one; 16-pressing a cap; 17-a check valve; 18-a sand control cover; 19-sand control hood; 20-expandable ring two; 201-lower limit groove.
Detailed Description
Example 1:
referring to fig. 1-3, which are schematic structural views of embodiment 1 of the present invention, a rope-free throwing-fishing multifunctional downhole choke is characterized by comprising:
a fishing head 1;
the locking block body 8 is detachably connected to the outer circumferential surface of the fishing head 1, a locking block hole is formed in the outer circumferential surface of the locking block body 8, the locking block 7 is connected in the locking block hole in a sliding mode, and one side of the locking block 7 is in contact with the outer circumferential surface of the fishing head 1;
the limiting part is detachably connected to the top end of the lock block body 8, and the inner circumferential surface of the limiting part is connected with the fishing head in a sliding manner;
an air nozzle seat rod 2, wherein the air nozzle seat rod 2 is connected with the inner circumferential surface of the fishing head 1 in a sliding way;
the support body 12 is detachably connected to the lower end of the lock block body 8, and the top end of the support body 12 is positioned in the lock block body 8 and detachably connected with the air nozzle seat rod 2;
the air nozzle seat 9, the air nozzle seat 9 can be dismantled in the support 12;
the air nozzle 14, the air nozzle 14 is detachably connected in the air nozzle seat 9;
the top end of the pressure cap 16 is detachably connected in the air nozzle seat 9, and the bottom end of the air nozzle 14 is contacted with the pressure cap 16;
the top end of the sand control cover 18 is detachably connected with the bottom end of the support body 12;
the outer circumferential surface of the check valve 17 is connected with the inner circumferential surface of the sand control cover 18 in a sliding way, and the inner circumferential surface of the check valve 17 is detachably connected with the air nozzle seat 9;
and the sand control hood 19 is detachably connected to the bottom end of the check valve 17, and the upper wall surface of the sand control hood 19 is in contact with the sand control hood 18.
In actual use: the method comprises the steps of firstly installing the throttleer at a wellhead through a catcher dispenser, opening a tubing valve, putting the throttleer into a well, stopping descending when the throttleer reaches the position of a preset working barrel, clamping a lock block body 8 on a necking down of the preset working barrel, enabling a fishing head 1 to move downwards relative to the throttleer under the action of inertia force, enabling the fishing head 1 and the lock block body 8 to move relatively at the moment, enabling a lock block 7 to be extruded by a large neck of the fishing head 1 and clamped in a clamping groove of the preset working barrel, and completing the dispensing of the throttleer in the well.
After the well is opened, gas enters along the radial slot of the sand control cover 18, and pressure reduction and throttling are completed through the central pore of the air tap 14.
In the later production stage, when plunger drainage gas production measures are taken, a plunger is thrown in a well mouth, the plunger impacts an air nozzle seat rod 2 by virtue of downward impact force of the plunger, an air nozzle seat 9 drives an air nozzle 14, a pressing cap 16, a check valve 17 and a sand prevention hood 19 to move downwards, a gas production channel large enough is kept in the device at the moment, gas enters the upper part of a throttling nozzle along a pore channel of the check valve 17 and a pore channel of the air nozzle seat 9, and the implementation of a plunger drainage gas production process is met.
Example 2:
referring to fig. 2, the present embodiment is different in that: a pin I6 is arranged between the lock block body 8 and the fishing head 1.
In actual use: the pin I6 can prevent the locking block 7 from being extruded out from the large diameter part of the fishing head 1 due to small resistance when the fishing head is placed down, and normal placing cannot be completed.
Example 3:
referring to fig. 2-3 and 5, the present embodiment differs in that: the fishing head comprises a fishing head body 1 and is characterized in that the diameter of the triggering surface on the outer circumferential surface of the fishing head body 1 is larger than the outer diameter of the fishing head body, an upper placing groove is formed in the outer circumferential surface of the triggering surface, a C ring I5 capable of expanding is arranged in the upper placing groove, the outer circumferential surface of the C ring I5 capable of expanding is connected with a lock block body 8 in a sliding mode, an upper limiting groove 51 matched with the C ring I5 capable of expanding is formed in the inner circumferential surface of the lock block body 8, and the upper limiting groove 51 is located above the lock block 7.
In actual use: the locking piece 7 is extruded by the large neck of the fishing head 1 and clamped in the clamping groove of the preset working barrel, meanwhile, the C ring I5 capable of expanding moves downwards to the groove of the locking piece body 8 to be popped out and clamped at the position, and the sealing ring extends into the neck of the preset working barrel to realize sealing.
The expandable C-ring 5 and the expandable C-ring 20 are identical in structure in this embodiment.
Example 4:
referring to fig. 1-2 and 4, the present embodiment differs in that: spacing portion includes locking cap 3 and keeps off ring 4, locking cap 3 can be dismantled and connect at the outer periphery in the 8 tops of locking block body, keep off ring 4 cover at 1 outer periphery of fishing head, and keep off 4 centre grippings of ring between locking cap 3 and the 8 tops of locking block body, it has spacing stupefied 11 to open on the head 1 of fishing.
In actual use: when the fishing head 1 moves downwards, the locking block 7 is extruded, when the locking block 7 is completely extruded, the locking cap 3 is abutted to the limiting position of the fishing head 1, the situation that the bottom of the fishing head 1 moves downwards is prevented, the fishing head 1 deforms inwards to extrude the air nozzle seat rod 2, the follow-up situation that the air nozzle seat rod 2 cannot move downwards is prevented, the fishing head 1 is limited by the retaining ring 4 to slide upwards out of the locking cap 3, and the whole structure separation of the fishing head is prevented.
In this embodiment, the retainer ring 4 is composed of two semicircular rings.
Example 5:
referring to fig. 1 and 3, the present embodiment is different in that: the lower end of the supporting body 12 is provided with a spacer ring 10 and a V-shaped sealing ring 11, and the spacer ring 10 and the V-shaped sealing ring 11 are positioned below the joint of the lock block body 8 and the supporting body 12.
In actual use: after the well is opened, the upper end of the invention is communicated with a ground pipeline to form low pressure, and the lower end is communicated with the stratum to form high pressure, so that pressure difference is formed at the device part, the upper and lower pressure differences can cause the V-shaped sealing ring 11 to radially expand, and secondary sealing is completed
Example 6:
referring to fig. 1 and 3, the present embodiment is different in that: be connected with pin two 13 between supporter 12 and the air cock seat 9, and the outer periphery of air cock seat 9 is provided with sealing washer 15, sealing washer 15 outer periphery and supporter 12 inner circumferential surface sliding connection.
In actual use: the impact force of plunger descending strikes air nozzle seat pole 2, and air nozzle seat pole 2 is impacted and is moved down, promotes air nozzle 14, and pin two 13 between air nozzle 14 and supporter 12 is cut off, and the air nozzle continues to move down, and when pin two 13 effect moved down at the throttle, air nozzle seat pole 2 keeps inertia equally, when getting into prefabricated position, can prevent because air nozzle seat pole 2 inertia opens air nozzle 14 in advance.
Example 7:
referring to fig. 1 and 3, the present embodiment is different in that: and a second sealing ring 151 is arranged on the outer circumference of the check valve 17, and the outer circumferential surface of the second sealing ring 151 is in sliding connection with the inner circumferential surface of the sand control cover 18.
In actual use: the second sealing ring 151 can maintain the tightness between the check valve 17 and the sand control cover 18.
Example 8:
referring to fig. 1, 3 and 5, the present embodiment is different in that: and a lower placing groove is formed in the outer wall surface of the check valve 17, a second expandable C ring 20 is arranged in the lower placing groove, and a lower limiting groove 201 matched with the second expandable C ring 20 is formed in the inner wall surface of the sand control cover.
When the check valve 17 is ejected in actual use, the second expandable C ring 20 on the outer wall surface of the check valve 17 slides on the inner wall surface of the sand control cover 19, when the second expandable C ring 20 slides to the lower limiting groove 201, part of the second expandable C ring 20 enters the lower limiting groove 201, and the other part of the second expandable C ring 20 is located in the lower placing groove to complete locking and prevent the bottom upwelling check valve 17 from resetting.
The expandable C-ring-20 and the expandable C-ring-5 are identical in structure in this embodiment.
While the embodiments of the present invention have been described in detail with reference to the drawings, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art, and the scope of the present invention is within the scope of the claims.
Claims (8)
1. The utility model provides an exempt from rope to throw and drag for multi-functional downhole choke ware which characterized in that includes:
a fishing head (1);
the fishing device comprises a locking block body (8), wherein the locking block body (8) is detachably connected to the outer circumferential surface of the fishing head (1), a locking block hole is formed in the outer circumferential surface of the locking block body (8), a locking block (7) is connected in the locking block hole in a sliding mode, and one side of the locking block (7) is in contact with the outer circumferential surface of the fishing head (1);
the limiting part is detachably connected to the top end of the lock block body (8), and the inner circumferential surface of the limiting part is connected with the fishing head in a sliding manner;
the air nozzle seat rod (2), the air nozzle seat rod (2) is connected with the inner circumferential surface of the fishing head (1) in a sliding way;
the support body (12), the support body (12) is detachably connected to the lower end of the lock block body (8), and the top end of the support body (12) is positioned in the lock block body (8) and detachably connected with the air nozzle seat rod (2);
the air nozzle seat (9), the air nozzle seat (9) can be dismantled in the supporting body (12);
the air nozzle (14), the air nozzle (14) is detachably connected in the air nozzle seat (9);
the top end of the pressing cap (16) is detachably connected in the air nozzle seat (9), and the bottom end of the air nozzle (14) is contacted with the pressing cap (16);
the top end of the sand control cover (18) is detachably connected with the bottom end of the support body (12);
the outer circumferential surface of the check valve (17) is in sliding connection with the inner circumferential surface of the sand prevention cover (18), and the inner circumferential surface of the check valve (17) is detachably connected with the air nozzle seat (9);
the sand control hood cap (19), this sand control hood cap (19) can be dismantled and connect in single current valve (17) bottom, and wall and sand control hood (18) contact on the sand control hood cap (19).
2. The rope-free throwing and fishing multifunctional downhole choke according to claim 1, characterized in that a first pin (6) is arranged between the lock block body (8) and the fishing head (1).
3. The rope-free fishing multifunctional downhole choke according to claim 1, characterized in that the fishing head (1) has an outer circumferential surface triggering surface with a diameter larger than the outer diameter of the fishing head, an outer circumferential surface of the triggering surface is provided with an upper placing groove, the upper placing groove is internally provided with a first expandable C ring (5), the outer circumferential surface of the first expandable C ring (5) is slidably connected with the lock block body (8), an inner circumferential surface of the lock block body (8) is provided with an upper limiting groove (51) matched with the first expandable C ring (5), and the upper limiting groove (51) is positioned above and on the lock block (7).
4. The rope-free throwing and fishing multifunctional downhole choke according to claim 1, characterized in that the limiting part comprises a lock cap (3) and a baffle ring (4), the lock cap (3) is detachably connected to the outer circumferential surface of the top of the lock block body (8), the baffle ring (4) is sleeved on the outer circumferential surface of the fishing head (1), the baffle ring (4) is clamped between the lock cap (3) and the top end of the lock block body (8), and the fishing head (1) is provided with a limiting ridge (11).
5. The rope-free throwing and fishing multifunctional downhole choke according to claim 1, characterized in that a spacer ring (10) and a V-shaped sealing ring (11) are arranged at the lower end of the support body (12), and the spacer ring (10) and the V-shaped sealing ring (11) are positioned below the joint of the lock block body (8) and the support body (12).
6. The rope-free throwing and fishing multifunctional downhole choke of claim 1, wherein a second pin (13) is connected between the support body (12) and the air nozzle seat (9), and a first sealing ring (15) is arranged on the outer circumferential surface of the air nozzle seat (9), and the outer circumferential surface of the first sealing ring (15) is slidably connected with the inner circumferential surface of the support body (12).
7. The rope-free throwing and fishing multifunctional downhole choke of claim 1, wherein a second sealing ring (151) is arranged on the outer circumference of the check valve (17), and the outer circumferential surface of the second sealing ring (151) is in sliding connection with the inner circumferential surface of the sand control cover (18).
8. The rope-free throwing and fishing multifunctional downhole choke holder is characterized in that a lower placing groove is formed in the outer wall surface of the check valve (17), a second expandable C ring (20) is arranged in the lower placing groove, and a lower limiting groove (201) matched with the second expandable C ring (20) is formed in the inner wall surface of the sand control cover (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010653171.XA CN111691862A (en) | 2020-07-08 | 2020-07-08 | Multifunctional underground throttle free of rope throwing and fishing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010653171.XA CN111691862A (en) | 2020-07-08 | 2020-07-08 | Multifunctional underground throttle free of rope throwing and fishing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111691862A true CN111691862A (en) | 2020-09-22 |
Family
ID=72485195
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010653171.XA Pending CN111691862A (en) | 2020-07-08 | 2020-07-08 | Multifunctional underground throttle free of rope throwing and fishing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111691862A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117365343A (en) * | 2023-11-03 | 2024-01-09 | 西安石油大学 | Setting anchor device and downhole choke having the same |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1727962A1 (en) * | 2004-03-22 | 2006-12-06 | Shell Internationale Research Maatschappij B.V. | Method of injecting lift gas into a production tubing of an oil well and gas lift flow control device for use in the mehtod |
| GB201002711D0 (en) * | 2007-08-15 | 2010-04-07 | Schlumberger Holdings | Flapper gas lift valve |
| CN204002735U (en) * | 2014-08-01 | 2014-12-10 | 西安金立石油科技有限公司 | A kind of Novel down-hole restriction choke |
| CN105888626A (en) * | 2016-04-19 | 2016-08-24 | 陕西汇丰悦石油科技开发有限公司 | Novel pre-set type underground flow controller |
| CN109403929A (en) * | 2018-10-23 | 2019-03-01 | 中国石油天然气股份有限公司 | Hydraulic pumping type underground throttle and use method thereof |
| CN111075407A (en) * | 2019-12-18 | 2020-04-28 | 中国石油天然气股份有限公司 | Gas well full life cycle downhole throttling production device and use method thereof |
-
2020
- 2020-07-08 CN CN202010653171.XA patent/CN111691862A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1727962A1 (en) * | 2004-03-22 | 2006-12-06 | Shell Internationale Research Maatschappij B.V. | Method of injecting lift gas into a production tubing of an oil well and gas lift flow control device for use in the mehtod |
| GB201002711D0 (en) * | 2007-08-15 | 2010-04-07 | Schlumberger Holdings | Flapper gas lift valve |
| CN204002735U (en) * | 2014-08-01 | 2014-12-10 | 西安金立石油科技有限公司 | A kind of Novel down-hole restriction choke |
| CN105888626A (en) * | 2016-04-19 | 2016-08-24 | 陕西汇丰悦石油科技开发有限公司 | Novel pre-set type underground flow controller |
| CN109403929A (en) * | 2018-10-23 | 2019-03-01 | 中国石油天然气股份有限公司 | Hydraulic pumping type underground throttle and use method thereof |
| CN111075407A (en) * | 2019-12-18 | 2020-04-28 | 中国石油天然气股份有限公司 | Gas well full life cycle downhole throttling production device and use method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117365343A (en) * | 2023-11-03 | 2024-01-09 | 西安石油大学 | Setting anchor device and downhole choke having the same |
| CN117365343B (en) * | 2023-11-03 | 2024-04-23 | 西安石油大学 | Setting anchor device and downhole choke having the same |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110145289B (en) | Stepless full-drift-diameter fracturing sliding sleeve | |
| CN104213868B (en) | Desirable bore anchor packer | |
| CN101892823B (en) | Method for throwing and fishing downhole choke without steel wire in natural gas well | |
| CN111075407A (en) | Gas well full life cycle downhole throttling production device and use method thereof | |
| CN111706281A (en) | Rope coring drilling tool | |
| CN111075388B (en) | Hydraulic releasing packer and method for preventing midway setting | |
| CN208950556U (en) | Easily unseal preset underground throttle | |
| CN212803153U (en) | High-strength casing high-pressure bridge plug for horizontal well | |
| US1831209A (en) | Method of and apparatus for making cast-in-place piles | |
| CN204646186U (en) | One can setting type underground check valve | |
| CN102777148B (en) | Double-function releasing bridge plug for horizontal well | |
| CN111691862A (en) | Multifunctional underground throttle free of rope throwing and fishing | |
| CN111594094A (en) | Penetrate stifled two-way shut-in well device of joint action | |
| CN107542418A (en) | High-pressure oil-gas well hydraulic oil pipe anchoring device and its method of work | |
| CN201763595U (en) | Oil well pump anchored oil drainage device | |
| CN201013335Y (en) | Water injection well pressure-working technique pipe column | |
| EP0113201A1 (en) | Device for retrieving objects from wells | |
| CN111101883A (en) | Underground buffering seating device suitable for horizontal well plunger gas lift and working method thereof | |
| CN109869127B (en) | C-ring sliding sleeve sand blaster and application method thereof | |
| CN2698966Y (en) | Hydraulic down-hole casing valve for under balance drilling | |
| CN110965958A (en) | Bidirectional seat seal backflow-preventing packer | |
| RU154295U1 (en) | PACKER DRILLED | |
| CN112065333A (en) | Multifunctional gas production tool for tail end of continuous oil pipe | |
| CN211874459U (en) | Gas well full life cycle downhole throttling production device | |
| CN214366000U (en) | Full-bore sliding sleeve switch |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200922 |
|
| RJ01 | Rejection of invention patent application after publication |