CN212671617U - Temporary gas-plugging slurry lifting and discharging pipe column - Google Patents

Temporary gas-plugging slurry lifting and discharging pipe column Download PDF

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Publication number
CN212671617U
CN212671617U CN202020574505.XU CN202020574505U CN212671617U CN 212671617 U CN212671617 U CN 212671617U CN 202020574505 U CN202020574505 U CN 202020574505U CN 212671617 U CN212671617 U CN 212671617U
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China
Prior art keywords
pipe
screen
mud
gas
screen pipe
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Active
Application number
CN202020574505.XU
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Chinese (zh)
Inventor
贾俊敏
王磊
杜文颖
姜国庆
刘根诚
由双海
吴晓明
崔彪
唐广杰
张利平
盖志刚
姜雷
孙翠荣
杨涛
王伟
徐永华
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Petrochina Co Ltd
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Petrochina Co Ltd
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Priority to CN202020574505.XU priority Critical patent/CN212671617U/en
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Abstract

The utility model provides a stifled gas is lifted and is arranged mud tubular column temporarily, the installation structure comprises a sleeve, oil pipe and screen pipe, sheathed tube first end communicates to ground, sheathed tube second end forms the artificial shaft bottom, the sheathed tube inside is all located coaxially to pipe and institute's screen pipe, oil pipe's first end extends ground top and well head intercommunication by sheathed tube first end, the second end of pipe and the first end of institute's screen pipe can communicate with dismouting, the second end of screen pipe extends to worker's shaft bottom department, a plurality of punchholes have evenly been seted up at the interval on the institute's screen pipe, every punchhole all passes through dissoluble stopcock shutoff. The utility model discloses a screen pipe can extend to the artificial shaft bottom, through to the clear water of beating into in oil pipe, the screen pipe, can effectively discharge the slurry of artificial shaft bottom department gathering to ground in the annular space between oil pipe and the sleeve pipe, after mud discharge operation is accomplished, through squeezing into the acidizing fluid in to oil pipe, can make the dissoluble stopple in each punchhole on the screen pipe dissolve, make each punchhole intercommunication to make the screen pipe satisfy later stage production, sand washing requirement.

Description

Temporary gas-plugging slurry lifting and discharging pipe column
Technical Field
The utility model belongs to the technical field of the oil recovery technology technique and specifically relates to indicate a stifled gas of temporarily lifts row's mud tubular column.
Background
The horizontal well technology is applied to almost all types of oil and gas reservoirs including edge and bottom water reservoirs, thin oil reservoirs, low-permeability oil reservoirs and the like, the technical bottleneck of high-efficiency development of the edge and bottom water reservoirs is solved, a classic mode of economic development of the oil reservoirs is established, and the economic benefit of thin-layer low-abundance marginal oil field development is improved. Until now, horizontal well development has played an important role in increasing and stabilizing production in oil fields. Taking Liaohe oil field as an example, the well completion technology of the horizontal well is researched and developed perfectly along with continuous attack, and powerful technical support is provided for exploitation of the horizontal well. In the drilling process of the oil and gas well of the buried hill oil reservoir, in order to ensure the well control safety, heavy mud is required to kill the well, as the well completion pipe column can not be lowered into the bottom of the artificial well, the drilling heavy mud is deposited in the well completion section and can not be effectively discharged to the ground, and a large amount of drilling mud is usually gathered in the well completion section, thereby influencing the normal production of the oil well.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a row's mud tubular column is lifted to stifled gas temporarily can effectively discharge mud to ground when artifical shaft bottom gathering drilling mud, and can satisfy reservoir transformation and later stage production, sand washing requirement behind mud discharge.
In order to achieve the above object, the utility model provides a row's mud tubular column is lifted to stifled gas temporarily, wherein, row's mud tubular column is lifted to stifled gas temporarily includes sleeve pipe, oil pipe and screen pipe, sheathed tube first end intercommunication to ground, the sheathed tube second end forms the artificial shaft bottom, oil pipe reaches the screen pipe is all located coaxially the sheathed tube inside, oil pipe's first end by sheathed tube first end extends ground top and well head intercommunication, oil pipe's second end with the first end of screen pipe can communicate with the dismouting, the second end of screen pipe extends to the artificial shaft bottom department, a plurality of punchholes have evenly been seted up at the interval on the screen pipe, every the punchhole all is through dissoluble stopcock shutoff.
The temporary plugging gas lifting and mud discharging pipe column is characterized in that the screen pipe is formed by sequentially connecting a plurality of sections of pipe bodies, and joints are formed at two ends of each section of pipe body.
The temporary plugging gas-lifting slurry discharge pipe column is characterized in that at least 16 holes are uniformly arranged on each meter of the sieve pipe at intervals.
The temporary plugging gas-lifting mud-discharging pipe column comprises a plurality of holes, wherein each hole is a threaded hole with the diameter of 14-18 mm, and each dissolvable hole plug is in threaded connection with the corresponding hole.
The temporary plugging gas-lift mud discharge pipe column comprises a barrel part and a cover part, wherein the barrel part can be plugged into the inner plugging of the hole, the cover part is positioned outside the sieve pipe, a screwing groove which is concave inwards to the barrel part is arranged on the cover part, and external threads are arranged on the peripheral surface of the barrel part.
The temporary plugging gas-lift mud discharge pipe column comprises a cylindrical part and a hole, wherein a sealing ring is arranged between the cylindrical part and the hole.
The temporary plugging gas-lift slurry discharge pipe column comprises a dissolvable hole plug, wherein the dissolvable hole plug is made of magnesium alloy materials with the thickness of 4-5 mm.
The temporary plugging gas lifting and discharging mud pipe column comprises a casing, wherein the casing is provided with a first end and a second end, the first end is provided with a first sealing ring, the second end is provided with a second sealing ring, the first sealing ring is provided with a first sealing ring, the second end is provided with a second sealing ring, and the first sealing ring is provided with a second sealing ring.
The temporary plugging gas-lift mud discharge pipe column comprises a packer, a plurality of gas-lift valves and a plurality of temporary plugging gas-lift mud discharge pipes, wherein the packer is arranged on the oil pipe, and the packer is arranged at the first end of the oil pipe.
The temporary plugging gas lifting and discharging slurry pipe column is characterized in that the annular space between the oil pipe and the casing is communicated with a movable nitrogen production and injection device and a pressure gauge.
Compared with the prior art, the utility model has the advantages as follows:
the utility model provides a row's mud tubular column is lifted to stifled gas temporarily, its screen pipe can extend to the artificial shaft bottom, through to oil pipe, the clear water of beating in the screen pipe, can effectively discharge the mud of artificial shaft bottom department gathering to ground in the annular space between oil pipe and the sleeve pipe, after mud discharge operation is accomplished, through squeezing into the acidizing fluid in to oil pipe, can make on the screen pipe dissoluble stopple in each punchhole dissolve, make each punchhole intercommunication to make the screen pipe satisfy later stage production, sand washing requirement.
Drawings
The following drawings are only intended to illustrate and explain the present invention schematically, and do not limit the scope of the present invention. Wherein:
fig. 1 is a schematic structural view of a temporary plugging gas lifting and mud discharging pipe column provided by the utility model;
fig. 2 is another schematic structural diagram of the temporary plugging gas lifting and mud discharging pipe column provided by the present invention;
FIG. 3 is a schematic structural view of a tubular body at one end of the sieve tube of the temporary plugging gas-lift slurry discharge tubular column provided by the present invention;
fig. 4 is a schematic perspective view of a dissolvable hole plug of the temporary plugging gas lifting and mud discharging pipe column provided by the present invention;
fig. 5 is another schematic perspective view of the dissolvable hole plug of the temporary plugging gas-lift mud-discharging pipe column according to the present invention.
The reference numbers illustrate:
1. a sleeve;
2. an oil pipe;
3. a screen pipe;
31. a pipe body;
311. a joint;
32. an eyelet;
4. a hole plug;
41. a barrel portion;
42. a cover portion;
421. screwing grooves;
5. a wellhead;
6. a packer;
7. a gas lift valve;
8. nitrogen making and injecting equipment;
9. and a pressure gauge.
Detailed Description
In order to clearly understand the technical solution, purpose and effect of the present invention, the detailed embodiments of the present invention will be described with reference to the accompanying drawings.
As shown in fig. 1 and 2, the utility model provides a gas lift and discharge mud pipe column temporarily blocks up, wherein, gas lift and discharge mud pipe column temporarily blocks up includes sleeve pipe 1, oil pipe 2 and screen pipe 3, the first end of sleeve pipe 1 communicates to ground, the second end of sleeve pipe 1 forms the artificial shaft bottom, oil pipe 2 and screen pipe 3 all locate the inside of sleeve pipe 1 coaxially, the first end of oil pipe 2 extends to above ground by the first end of sleeve pipe 1 and communicates with well head 5, the second end of oil pipe 2 and the first end of screen pipe 3 can communicate with each other with disassembling and assembling, the second end of screen pipe 3 extends to the artificial shaft bottom, a plurality of eyelets 32 have evenly been seted up at the interval on the screen pipe 3, every eyelet 32 all blocks up through dissoluble stopple 4;
the sieve tube 3 can extend to the bottom of the artificial well, clear water is injected into the oil tube 2 and the sieve tube 3, slurry gathered at the bottom of the artificial well can be effectively discharged to the ground from an annular space between the oil tube 2 and the sleeve 1, acid liquor is injected into the oil tube 2 after slurry discharge operation is completed, the soluble hole plugs 4 in the holes 32 in the sieve tube 3 can be dissolved, the holes 32 are communicated, and the sieve tube 3 meets requirements of later-stage production and sand washing.
Preferably, as shown in fig. 3, the utility model provides a mud pipe column is lifted and arranged to temporary plugging gas, wherein, the screen pipe 3 is formed by the multistage body 31 meets in order, and the both ends of every section body 31 all are formed with joint 311 to according to the particular case of oil well, through the body 31 concatenation screen pipe 3 that has suitable length.
Preferably, the utility model provides a stifled gas is lifted and is arranged mud tubular column temporarily, wherein, the even interval is equipped with 16 at least punchholes 32 on per meter screen pipe 3 to satisfy later stage production, sand washing requirement.
As preferred, the utility model provides a row's mud tubular column is lifted to temporary shutoff gas, wherein, each punchhole 32 is the screw hole that the diameter is 14mm ~ 18mm to satisfy later stage production, sand washing requirement, each dissoluble stopple 4 all with the punchhole 32 threaded connection who corresponds, have the advantage of the dismouting of being convenient for.
Preferably, as shown in fig. 4 and 5, the utility model provides a temporary plugging gas lift mud discharging pipe column, wherein, dissolvable stopple 4 includes barrel 41 and cover 42, and barrel 41 can be plugged in inside shutoff punchhole 32 of punchhole 32, and cover 42 is located the outside of screen pipe 3, is equipped with on the cover 42 to the rotatory groove 421 of barrel 41 indent to make things convenient for the staff to twist dissoluble stopple 4, makes it plug in punchhole 32, and as preferred, it can be hexagonal recess to twist groove 421, and the outer peripheral face of barrel 41 is equipped with the external screw thread, in order to connect with the internal thread of punchhole 32 soon.
Preferably, the present invention provides a temporary plugging gas lift mud discharging pipe column, wherein a sealing ring is provided between the cylinder portion 41 and the hole 32 to further improve the plugging effect between the soluble hole plug 4 and the hole 32.
Preferably, the utility model provides a mud pipe column is lifted to temporary shutoff gas, wherein, dissolvable stopple 4 is the dissolvable stopple 4 of being made by the magnesium alloy material that thickness is 4mm ~ 5mm, is easily corroded by acid liquid, so, after mud discharge operation is accomplished, through beating acid in to oil pipe 2, can dissolve dissolvable stopple 4.
As preferred, as shown in fig. 1 and 2, the utility model provides a row's mud tubular column is lifted to temporary stifled gas, wherein, row's mud tubular column is lifted to temporary stifled gas can also include packer 6, 6 covers of packer locate oil pipe 2's the outside and be close to oil pipe 2's second end department, packer 6 can be sat and sealed on sleeve pipe 1's inner wall, accomplish at mud discharge operation, and to beat sour back with each dissoluble stopple 4 dissolution in oil pipe 2, make packer 6 sit and seal on sleeve pipe 1's inner wall, can carry out normal oil well production and sand washing operation this moment.
Preferably, as shown in fig. 2, the temporarily blocked gas lift mud discharging pipe column provided by the present invention has a plurality of gas lift valves 7 arranged on the oil pipe 2 at intervals, and each gas lift valve 7 is located between the first end of the oil pipe 2 and the packer 6; and the annular space between the oil pipe 2 and the casing 1 is communicated with a movable nitrogen-making and nitrogen-injecting device 8 and a pressure gauge 9, in the production process of the oil well, the nitrogen-making and nitrogen-injecting device 8 can be used for pressurizing the annular space between the oil pipe 2 and the casing 1, after the pressure in the annular space between the oil pipe 2 and the casing 1 reaches a preset pressure, the gas lift valve 7 is opened, the gas in the annular space between the oil pipe 2 and the casing 1 enters the oil pipe 2 through each gas lift valve 7 to ensure the smooth continuous production of the oil well, and in the process, the pressure gauge 9 is used for monitoring the pressure in the annular space between the oil pipe 2 and the casing 1 to ensure the safety of gas injection.
Compared with the prior art, the utility model has the advantages as follows:
the utility model provides a row's mud tubular column is lifted to stifled gas temporarily, its screen pipe can extend to the artificial shaft bottom, through to oil pipe, the clear water of beating in the screen pipe, can effectively discharge the mud of artificial shaft bottom department gathering to ground in the annular space between oil pipe and the sleeve pipe, after mud discharge operation is accomplished, through squeezing into the acidizing fluid in to oil pipe, can make on the screen pipe dissoluble stopple in each punchhole dissolve, make each punchhole intercommunication to make the screen pipe satisfy later stage production, sand washing requirement.
The above description is only exemplary of the present invention, and is not intended to limit the scope of the present invention. Any equivalent changes and modifications that can be made by one skilled in the art without departing from the spirit and principles of the invention should be considered within the scope of the invention.

Claims (10)

1. The utility model provides a mud pipe column is lifted and arranged to temporary stifled gas, its characterized in that, mud pipe column is lifted and arranged to temporary stifled gas includes sleeve pipe, oil pipe and screen pipe, the sheathed tube first end communicates to ground, the sheathed tube second end forms artifical shaft bottom, oil pipe and the screen pipe is all located coaxially the sheathed tube inside, oil pipe's first end by the sheathed tube first end extends ground top and well head intercommunication, oil pipe's second end with the first end of screen pipe can communicate with dismouting, the second end of screen pipe extends to artifical shaft bottom department, a plurality of eyelets have evenly been seted up at the interval on the screen pipe, every the eyelet is all through the shutoff of dissoluble stopcock.
2. The pipe column of claim 1, wherein the screen is formed by connecting a plurality of sections of pipe bodies in sequence, and joints are formed at both ends of each section of pipe body.
3. The pipe column of claim 2, wherein at least 16 holes are uniformly spaced per meter of the screen.
4. The temporary plugging gas-lift mud discharge pipe column according to claim 3, wherein each of the holes is a threaded hole with a diameter of 14mm to 18mm, and each of the dissolvable hole plugs is in threaded connection with the corresponding hole.
5. The pipe column of claim 1, wherein the dissolvable plug comprises a cylinder and a cover, the cylinder can be plugged into the inside of the hole to plug the hole, the cover is located outside the sieve tube, the cover is provided with a screwing groove recessed into the cylinder, and the outer circumferential surface of the cylinder is provided with an external thread.
6. The pipe string for temporarily plugging gas lift and mud discharge according to claim 5, wherein a sealing ring is disposed between the barrel portion and the hole.
7. The temporary plugging gas-lift mud discharge pipe column according to claim 5, wherein the dissolvable hole plug is made of magnesium alloy material with the thickness of 4-5 mm.
8. The temporary plugging gas lifting and discharging mud pipe column according to any one of claims 1 to 7, further comprising a packer, wherein the packer is sleeved outside the oil pipe and is close to the second end of the oil pipe, and the packer can be seated on the inner wall of the casing.
9. The temporary plugging gas lift mud drainage string of claim 8, wherein a plurality of gas lift valves are spaced apart from the tubing, each gas lift valve being positioned between the first end of the tubing and the packer.
10. The temporarily plugged gas lift mud pipe string according to claim 8, wherein an annulus between the tubing and the casing is in communication with a movable nitrogen producing and injecting device and a pressure gauge.
CN202020574505.XU 2020-04-17 2020-04-17 Temporary gas-plugging slurry lifting and discharging pipe column Active CN212671617U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202020574505.XU CN212671617U (en) 2020-04-17 2020-04-17 Temporary gas-plugging slurry lifting and discharging pipe column

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202020574505.XU CN212671617U (en) 2020-04-17 2020-04-17 Temporary gas-plugging slurry lifting and discharging pipe column

Publications (1)

Publication Number Publication Date
CN212671617U true CN212671617U (en) 2021-03-09

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CN202020574505.XU Active CN212671617U (en) 2020-04-17 2020-04-17 Temporary gas-plugging slurry lifting and discharging pipe column

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115306354A (en) * 2022-10-09 2022-11-08 四川圣诺油气工程技术服务有限公司 Temporary plugging type liner tube for under-pressure pressing

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115306354A (en) * 2022-10-09 2022-11-08 四川圣诺油气工程技术服务有限公司 Temporary plugging type liner tube for under-pressure pressing

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