CN115306354A - Temporary plugging type liner tube for under-pressure pressing - Google Patents
Temporary plugging type liner tube for under-pressure pressing Download PDFInfo
- Publication number
- CN115306354A CN115306354A CN202211223815.7A CN202211223815A CN115306354A CN 115306354 A CN115306354 A CN 115306354A CN 202211223815 A CN202211223815 A CN 202211223815A CN 115306354 A CN115306354 A CN 115306354A
- Authority
- CN
- China
- Prior art keywords
- under pressure
- mounting hole
- temporary stop
- pipe body
- liner
- 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
- 238000003825 pressing Methods 0.000 title abstract description 7
- 238000007789 sealing Methods 0.000 claims description 7
- SNAAJJQQZSMGQD-UHFFFAOYSA-N aluminum magnesium Chemical compound [Mg].[Al] SNAAJJQQZSMGQD-UHFFFAOYSA-N 0.000 claims description 3
- 229910000838 Al alloy Inorganic materials 0.000 claims description 2
- 239000007788 liquid Substances 0.000 abstract description 7
- 238000005553 drilling Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910000861 Mg alloy Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000007774 longterm Effects 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
- E21B43/02—Subsoil filtering
- E21B43/08—Screens or liners
-
- 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
- E21B43/02—Subsoil filtering
- E21B43/08—Screens or liners
- E21B43/086—Screens with preformed openings, e.g. slotted liners
-
- 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
- E21B2200/00—Special features related to earth drilling for obtaining oil, gas or water
- E21B2200/08—Down-hole devices using materials which decompose under well-bore conditions
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)
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Pipe Accessories (AREA)
Abstract
The invention belongs to the technical field of operation under pressure, and discloses a temporary plugging type lining pipe for pressing under pressure. According to the temporary plugging type liner pipe for pressing in under pressure, the mounting hole in the pipe body is sealed by the soluble plug to form a liner pipe without a hole, pressing in under pressure can be carried out, after the preset well depth is reached, the soluble plug and the liquid in the well are contacted and dissolved due to the corrosivity of the liquid in the well, and the mounting hole in the pipe body is exposed to form a screen pipe.
Description
Technical Field
The invention belongs to the technical field of operation under pressure, and particularly relates to a temporary plugging type liner tube for running under pressure.
Background
The construction of a fracture-type depleted oil-gas reservoir faces the problems of serious stratum depletion, low stratum pressure and serious drilling fluid leakage in the drilling process, and a liner pipe well completion mode is needed in order to exert the injection and production capacity of the reservoir as much as possible and ensure the stability of the long-term injection and production alternating load on the well wall of a producing zone.
In the face of the problems of low pressure and serious leakage, the liner tube needs to be pressed under pressure for running, but in the process of implementing the invention, the inventor finds that at least the following problems exist in the prior art: the length of the sieve tube is generally 200m to 300m, even longer, and the running of a long sieve tube is a difficult problem in operation under pressure.
Disclosure of Invention
The present invention aims to solve the above technical problem at least to some extent. To this end, the invention aims to provide a temporary plugging liner for running under pressure.
The technical scheme adopted by the invention is as follows:
the utility model provides a stifled type bushing pipe temporarily for taking pressure to go into, includes the body, is equipped with a plurality of mounting holes along its axial spiral on the body, installs soluble end cap in the mounting hole, and soluble end cap is served towards serving outside the body and has been seted up the dissolution mounting hole.
Preferably, the mounting holes are arranged along the radial direction of the pipe body, and the included angle between the axes of every two adjacent mounting holes is 60 degrees.
Preferably, the soluble plug is made of magnesium aluminum alloy.
Preferably, the dissolving installation hole has a regular hexagonal prism shape.
Preferably, both ends of the pipe body are provided with joint sections, the connecting cylinder is arranged on the joint sections to connect the pipe bodies in series, and the joint section of the pipe body at the lowermost end is provided with a sealing cover.
Preferably, an external thread is arranged on the outer circumferential surface of the joint section, an internal thread matched with the external thread is arranged on the inner circumferential surface of the connecting cylinder, and an internal thread matched with the external thread is also arranged on the sealing cover.
Preferably, the soluble plug is in threaded connection with the mounting hole.
The invention has the beneficial effects that:
according to the temporary plugging type liner pipe for pressing in under pressure, the mounting hole in the pipe body is sealed by the soluble plug to form a liner pipe without a hole, pressing in under pressure can be carried out, after the preset well depth is reached, the soluble plug and the liquid in the well are contacted and dissolved due to the corrosivity of the liquid in the well, and the mounting hole in the pipe body is exposed to form a screen pipe.
Drawings
FIG. 1 is a cross-sectional view of a temporary plug liner for a pressurized down run of the present invention.
Fig. 2 is a side view of a temporary plug liner for a downhole application of pressure according to the present invention.
Fig. 3 is an enlarged view of a portion a in fig. 1.
In the figure: 1-a pipe body; 2-mounting holes; 3-soluble plug; 4-dissolving the mounting hole; 5-connecting the cylinder; 6-sealing cover.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements.
As shown in fig. 1 to 3, the temporary plugging type bushing for under-pressure insertion of the present embodiment includes a pipe body 1, a plurality of mounting holes 2 are spirally formed on the pipe body 1 along an axial direction thereof, a soluble plug 3 is installed in the mounting hole 2, and a soluble mounting hole 4 is formed at one end of the soluble plug 3 facing the outside of the pipe body 1. The two ends of the pipe body 1 are provided with joint sections, the connecting cylinder 5 is arranged on the joint sections to connect the pipe bodies 1 in series, and the joint section of the pipe body 1 at the lowest end is provided with a sealing cover 6.
The mounting hole 2 on the tube body is sealed by the soluble plug 3 to form a liner tube without holes, and can be pressed in under pressure, after the well reaches the set well depth, the soluble plug and the liquid in the well are contacted and dissolved due to the corrosiveness of the liquid in the well, and the mounting hole on the tube body is exposed to form a screen tube. The dissolving installation hole 4 can increase the contact area of the soluble plug and downhole liquid in the oil pipe, and the dissolving is accelerated.
In this embodiment, the soluble plug 3 is made of an aluminum magnesium alloy,
the soluble plug 3 is in threaded connection with the mounting hole 2, the soluble mounting hole 4 is in the shape of a regular hexagonal prism, and the soluble mounting hole 4 in the shape of the regular hexagonal prism can be matched with a common tool for rapid mounting.
The outer circumference of the joint section is provided with an external thread, the inner circumference of the connecting cylinder 5 is provided with an internal thread matched with the external thread, and the sealing cover 6 is also provided with an internal thread matched with the external thread.
As shown in figure 2, the mounting holes 2 are arranged along the radial direction of the pipe body 1, the included angle between the axes of every two adjacent mounting holes 2 is 60 degrees, the height difference between the mounting holes can be flexibly adjusted according to practical application, in the embodiment, 16 holes are formed between every two adjacent mounting holes per meter on the pipe body, and the strength of the pipe body can be ensured by the arrangement, and the requirement of the sieve pipe can be met.
The present invention is not limited to the above-mentioned alternative embodiments, and any other various products can be obtained by anyone in the light of the present invention, but any changes in the shape or structure thereof, all of which fall within the scope of the present invention, fall within the protection scope of the present invention.
Claims (7)
1. A temporary plugging type liner tube for being pressed in under pressure is characterized in that: including body (1), be equipped with a plurality of mounting holes (2) along its axial spiral on body (1), install soluble end cap (3) in mounting hole (2), soluble end cap (3) are served towards serving outside body (1) and have been seted up and have been dissolved mounting hole (4).
2. A temporary stop liner for running under pressure according to claim 1, wherein: the mounting holes (2) are arranged along the radial direction of the pipe body (1), and the included angle of the axes of every two adjacent mounting holes (2) is 60 degrees.
3. A temporary stop liner for running under pressure according to claim 1, wherein: the soluble plug (3) is made of magnesium-aluminum alloy.
4. A temporary stop liner for a downhole pressurized tubular according to claim 1 or 3, wherein: the dissolving mounting hole (4) is in a regular hexagonal prism shape.
5. A temporary stop liner for running under pressure according to claim 1, wherein: the two ends of the pipe body (1) are provided with joint sections, the connecting cylinder (5) is arranged on the joint sections to connect the pipe body (1) in series, and the joint section of the pipe body (1) at the lowest end is provided with a sealing cover (6).
6. A temporary stop liner for a downhole application of pressure according to claim 5, wherein: the outer circumference of the joint section is provided with an external thread, the inner circumference of the connecting cylinder (5) is provided with an internal thread matched with the external thread, and the sealing cover (6) is also provided with an internal thread matched with the external thread.
7. A temporary stop liner for running under pressure according to claim 1, wherein: the soluble plug (3) is in threaded connection with the mounting hole (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211223815.7A CN115306354A (en) | 2022-10-09 | 2022-10-09 | Temporary plugging type liner tube for under-pressure pressing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211223815.7A CN115306354A (en) | 2022-10-09 | 2022-10-09 | Temporary plugging type liner tube for under-pressure pressing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115306354A true CN115306354A (en) | 2022-11-08 |
Family
ID=83867192
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211223815.7A Pending CN115306354A (en) | 2022-10-09 | 2022-10-09 | Temporary plugging type liner tube for under-pressure pressing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115306354A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117514088A (en) * | 2024-01-05 | 2024-02-06 | 四川圣诺油气工程技术服务有限公司 | Method for pressing long screen pipe under pressure |
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|---|---|---|---|---|
| CN101275464A (en) * | 2007-03-30 | 2008-10-01 | 中国石油天然气集团公司 | Oil gas well completion temporary blocking liner tube |
| CN201396123Y (en) * | 2009-05-08 | 2010-02-03 | 中国石油集团川庆钻探工程有限公司 | Temporary plugging liner tube with taper threaded hole |
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| CN111075364A (en) * | 2020-01-10 | 2020-04-28 | 新疆恒智伟业石油工程技术开发有限公司 | Clean well completion pipe string and process for high-temperature and high-pressure oil and gas well |
| CN111088973A (en) * | 2020-01-10 | 2020-05-01 | 新疆恒智伟业石油工程技术开发有限公司 | Multifunctional fracturing well completion pipe string and process for high-temperature and high-pressure oil and gas well |
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| US20200332619A1 (en) * | 2019-04-16 | 2020-10-22 | NexGen Oil Tools Inc. | Dissolvable plugs used in downhole completion systems |
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| CN212671617U (en) * | 2020-04-17 | 2021-03-09 | 中国石油天然气股份有限公司 | Temporary gas-plugging slurry lifting and discharging pipe column |
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2022
- 2022-10-09 CN CN202211223815.7A patent/CN115306354A/en active Pending
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| US20160222767A1 (en) * | 2015-02-03 | 2016-08-04 | Weatherford Technology Holdings, Llc | Temporarily Impermeable Sleeve for Running a Well Component in Hole |
| CN110242232A (en) * | 2018-03-09 | 2019-09-17 | 成都汉科石油技术有限公司 | A kind of tubing string and construction technology having cleaned well for high temperature and pressure oil/gas well |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117514088A (en) * | 2024-01-05 | 2024-02-06 | 四川圣诺油气工程技术服务有限公司 | Method for pressing long screen pipe under pressure |
| CN117514088B (en) * | 2024-01-05 | 2024-04-05 | 四川圣诺油气工程技术服务有限公司 | Method for pressing long screen pipe under pressure |
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| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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Application publication date: 20221108 |