CN108843271B - Oil drainage device - Google Patents
Oil drainage device Download PDFInfo
- Publication number
- CN108843271B CN108843271B CN201811073701.2A CN201811073701A CN108843271B CN 108843271 B CN108843271 B CN 108843271B CN 201811073701 A CN201811073701 A CN 201811073701A CN 108843271 B CN108843271 B CN 108843271B
- Authority
- CN
- China
- Prior art keywords
- sliding sleeve
- oil drain
- main body
- column main
- hole
- 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.)
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Links
- 238000003825 pressing Methods 0.000 claims abstract description 20
- 230000000903 blocking effect Effects 0.000 claims abstract description 18
- 238000007789 sealing Methods 0.000 claims description 21
- 239000002184 metal Substances 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000007788 liquid Substances 0.000 abstract description 3
- 239000003921 oil Substances 0.000 description 50
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000002159 abnormal effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000005086 pumping Methods 0.000 description 3
- 239000003129 oil well Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/06—Valve arrangements for boreholes or wells in wells
- E21B34/10—Valve arrangements for boreholes or wells in wells operated by control fluid supplied from outside the borehole
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)
- Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
- Sewage (AREA)
Abstract
The invention provides an oil drainage device which comprises a tubular column main body, a sliding sleeve and a blocking sleeve, wherein the sliding sleeve and the blocking sleeve are sleeved outside the tubular column main body at intervals, the sliding sleeve can move along the outer side of the tubular column main body to a blocking sleeve end, the sliding sleeve is fixedly connected with the tubular column main body through a shear pin, and the blocking sleeve is connected with the outer side of the tubular column main body through threads; the side wall of the tubular column main body positioned at the inner side of the sliding sleeve is provided with an oil drain hole and a side hole, a groove communicated with the oil drain hole is outwards formed in the oil drain hole, a baffle plate for covering the oil drain hole and a pressing cap for fixing the baffle plate are arranged in the groove, a through hole for communicating the oil drain hole is formed in the pressing cap, the end part of the pressing cap is propped against the inner side of the sliding sleeve, a sunken annular gap is inwards formed in the inner side of the sliding sleeve, the annular gap is communicated with the side hole, after a shear pin is removed, the sliding sleeve moves towards the end of the retaining sleeve, and the annular gap is not communicated with the side hole and the through hole of the pressing cap is communicated with the outside. The invention can adapt to underground liquid column fluctuation without failure, and realize the improvement of the stability of the oil drainage device.
Description
Technical Field
The invention belongs to the technical field of oil extraction, and particularly relates to an oil drainage device.
Background
In the production of oil recovery wells, downhole operations are the most common means of maintaining the well. When the pumping operation of the pump is performed in the pumping well, in order to prevent crude oil, sewage and the like in the oil pipe from bringing to the ground to pollute the environment, the construction progress is affected, and waste is caused, and normally, the oil drain is arranged above the pump in advance when a production string is lowered, so that the oil and water in the oil pipe can be drained into an oil sleeve annulus in the pumping process.
At present, the plate leakage and the sliding sleeve leakage are used as the common oil drainage device of the oil field, but in the process of testing the pump after the completion of the oil well, the pressure control is unstable, so that the abnormal high pressure in the pipe column is easily caused, and the plate leakage or the sliding sleeve leakage is opened; in addition, some underground operations (such as perforation) can also cause great fluctuation of the liquid column in the tubular column, and the hydraulic fluctuation can directly lead to the shearing of a copper plate with a baffle plate and a sliding sleeve which are leaked, so that the operation reworking is caused, and the normal production of an oil well is seriously influenced.
Disclosure of Invention
In view of the above, the present invention aims to provide a drainage device, which can adapt to the fluctuation of a liquid column in a well without failure, and improve the stability of the drainage device.
In order to achieve the above purpose, the technical scheme of the invention is realized as follows:
the oil drainage device comprises a pipe column main body, a sliding sleeve and a blocking sleeve, wherein a space between the sliding sleeve and the blocking sleeve is sleeved outside the pipe column main body, the sliding sleeve can move along the outer side of the pipe column main body to a blocking sleeve end, the sliding sleeve is fixedly connected with the pipe column main body through a shear pin, and the blocking sleeve is connected with the outer side of the pipe column main body through threads;
the side wall of the tubular column main body positioned at the inner side of the sliding sleeve is provided with an oil drain hole and a side hole, a groove communicated with the oil drain hole is outwards formed in the oil drain hole, a baffle plate for covering the oil drain hole and a pressing cap for fixing the baffle plate are arranged in the groove, a through hole for communicating the oil drain hole is formed in the pressing cap, the end part of the pressing cap is propped against the inner side of the sliding sleeve, a sunken annular gap is inwards formed in the inner side of the sliding sleeve, the annular gap is communicated with the side hole, after a shear pin is removed, the sliding sleeve moves towards the end of the retaining sleeve, and the annular gap is not communicated with the side hole and the through hole of the pressing cap is communicated with the outside.
Further, the side hole is located between the oil drain hole and the retaining sleeve.
Further, an annular gasket is arranged between the baffle plate and the groove close to the oil drain hole.
Further, be provided with first O type sealing washer, second O type sealing washer and third O type sealing washer between being located tubular column main part and the sliding sleeve, first O type sealing washer and second O type sealing washer are located the both sides of oil drain hole respectively through the ring channel that sets up in tubular column main part outside, and first O type sealing washer offsets with the sliding sleeve is inboard, is annular space between second O type sealing washer and the sliding sleeve inboard, and the third O type sealing washer sets up in the ring channel of seting up in the sliding sleeve inboard.
Further, the outside of the tubular column main body is provided with a convex limiting step, the limiting step is located on one side, far away from the stop sleeve, of the oil drain hole, and when the tubular column main body is connected with the sliding sleeve through the shear pins, the front end portion of the sliding sleeve is propped against the limiting step on the outside of the tubular column main body.
Further, when the tubular column main body is connected with the sliding sleeve through the shear pins, the distance from the front end of the sliding sleeve to the center of the oil drain hole is L1, the distance from the rear end of the sliding sleeve to the blocking sleeve is L2, and the distance from the third O-shaped sealing ring of the sliding sleeve to the shear pins is L3, so that the condition that L3 is more than L2 is more than L1 is satisfied.
Further, the side holes are provided with 3-6.
Further, the radius of the oil drain hole is larger than that of the side hole.
Further, the press cap is in threaded connection with the groove.
Further, the baffle is made of metal.
In the process of well running or normal production, abnormal pressure fluctuation in the pipe column main body enters the pressure cap through the side hole and the annular gap, so that the pressures of the front surface and the back surface of the baffle are equivalent, and the baffle is not damaged by the impact of the abnormal pressure; when the oil drainage channel is required to be opened, the shear pins are pressed and sheared into the pipe column main body, the sliding sleeve moves to the position of the blocking sleeve, the baffle is not protected, the pressing is continued, the baffle is opened, and the oil drainage channel is opened.
Compared with the prior art, the oil drainage device has the following advantages:
the oil drainage device disclosed by the invention can be used for overcoming the problem of easy failure existing in the conventional oil drainage device to a great extent, effectively improving the stability of the oil drainage device, reducing unnecessary operation cost, meeting the production requirements of safety and environmental protection of an oil field and providing technical guarantees for cost reduction and synergy of the oil field.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention. In the drawings:
fig. 1 is a schematic structural diagram of an oil drainage device according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a structure near a drain hole according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of an oil drainage device according to an embodiment of the present invention.
Reference numerals illustrate:
1-a tubular column body; 2-sliding sleeve; 3-a retaining sleeve; 4-cutting nails; 5-an oil drain hole; 6-side holes; 7-grooves; 8-baffle plates; 9-pressing the cap; 10-through holes; 11-annulus clearance; 12-a first O-shaped sealing ring; 13-a second O-ring seal; 14-a third O-shaped sealing ring; 15-limiting steps; 16-annular gasket.
Detailed Description
It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art in a specific case.
The invention will be described in detail below with reference to the drawings in connection with embodiments.
1-3, the oil drainage device comprises a pipe column main body 1, a sliding sleeve 2 and a blocking sleeve 3, wherein the sliding sleeve 2 and the blocking sleeve 3 are sleeved on the outer side of the pipe column main body 1 at intervals, the sliding sleeve 2 can move along the outer side of the pipe column main body 1 to the end of the blocking sleeve 3, the sliding sleeve 2 is fixedly connected with the pipe column main body 1 through a shear pin 4, and the blocking sleeve 3 is connected with the outer side of the pipe column main body 1 through threads;
the side wall of the pipe column main body 1 positioned at the inner side of the sliding sleeve 2 is provided with an oil drain hole 5 and a side hole 6, the oil drain hole 5 is outwards provided with a groove 7 communicated with the oil drain hole 5, a baffle 8 covering the oil drain hole 5 and a pressing cap 9 fixing the baffle 8 are arranged in the groove, a through hole 10 communicated with the oil drain hole 5 is arranged on the pressing cap 9, the end part of the pressing cap 9 abuts against the inner side of the sliding sleeve 2, the inner side of the sliding sleeve 2 is inwards provided with a sunken annular gap 11, the annular gap 11 is communicated with the side hole 6, after the shear pin 4 is removed, the sliding sleeve 2 moves towards the end of the baffle sleeve 3, the annular gap 11 is not communicated with the side hole 6, and the through hole 10 of the pressing cap 9 is communicated with the outside.
The side hole 6 is positioned between the oil drain hole 5 and the baffle sleeve 3.
An annular gasket 16 is arranged between the baffle plate 8 and the groove near the oil drain hole 5.
The first O-ring 12, the second O-ring 13 and the third O-ring 14 are disposed between the tubular column body 1 and the sliding sleeve 2, the first O-ring 12 and the second O-ring 13 are disposed on two sides of the oil drain hole 5 respectively through annular grooves disposed on the outer side of the tubular column body 1, the first O-ring 12 abuts against the inner side of the sliding sleeve 2, an annular gap 11 is disposed between the second O-ring 13 and the inner side of the sliding sleeve 2, and the third O-ring 14 is disposed in an annular groove disposed on the inner side of the sliding sleeve 2.
The outside of the pipe column main body 1 is provided with a convex limiting step 15, the limiting step 15 is positioned on one side of the oil drain hole 5 away from the baffle sleeve 3, and when the pipe column main body 1 is connected with the sliding sleeve 2 through the shear pin 4, the front end part of the sliding sleeve 2 just abuts against the limiting step 15 on the outside of the pipe column main body 1.
When the tubular column main body 1 is connected with the sliding sleeve 2 through the shear pin 4, the distance from the front end of the sliding sleeve 2 to the center of the oil drain hole 5 is L1, the distance from the rear end of the sliding sleeve 2 to the baffle sleeve 3 is L2, and the distance from the third O-shaped sealing ring 14 of the sliding sleeve 2 to the shear pin 4 is L3, so that the condition that L3 is more than L2 is more than L1 is satisfied.
The number of the side holes 6 is 3-6.
The radius of the oil drain hole 5 is larger than that of the side hole 6.
The press cap 9 is connected with the groove through screw threads.
The baffle 8 is made of metal.
In the process of well descending or normal production, as one side of the baffle plate 8 is communicated with the oil drain hole 5, the other side of the baffle plate is communicated with the annular gap 11 through the through hole 10 and then is communicated with the side hole 6, and as the oil drain hole 5 and the side hole 6 are communicated with the inside of the tubular column main body 1, the pressure received by two sides of the baffle plate 8 is equal.
When the pipe column main body 1 needs to be lifted for oil drainage, the shear pins 4 are pressed into the pipe column main body 1, the sliding sleeve 2 moves to the position of the baffle sleeve 3, the baffle plate 8 is not protected, the pressing is continued, the baffle plate 8 is blocked, and an oil drainage channel is opened.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
Claims (6)
1. An oil drainage device, its characterized in that: the novel pipe column comprises a pipe column main body (1), a sliding sleeve (2) and a blocking sleeve (3), wherein the sliding sleeve (2) and the blocking sleeve (3) are sleeved outside the pipe column main body (1) at intervals, the sliding sleeve (2) can move along the outer side of the pipe column main body (1) to the end of the blocking sleeve (3), the sliding sleeve (2) is fixedly connected with the pipe column main body (1) through a shear pin (4), and the blocking sleeve (3) is connected with the outer side of the pipe column main body (1) through threads; an oil drain hole (5) and a side hole (6) are formed in the side wall of a tubular column main body (1) positioned at the inner side of the sliding sleeve (2), a groove (7) communicated with the oil drain hole (5) is formed in the oil drain hole (5) outwards, a baffle (8) for covering the oil drain hole (5) and a pressing cap (9) for fixing the baffle (8) are arranged in the groove, a through hole (10) for communicating the oil drain hole (5) is formed in the pressing cap (9), the end part of the pressing cap (9) abuts against the inner side of the sliding sleeve (2), a sunken annular gap (11) is formed in the inner side of the sliding sleeve (2), the annular gap (11) is communicated with the side hole (6), the sliding sleeve (2) moves towards the end of the baffle sleeve (3) after the shear pin (4) is removed, and the annular gap (11) is not communicated with the side hole (6) and the through hole (10) of the pressing cap (9) is communicated with the outside. The side hole (6) is positioned between the oil drain hole (5) and the baffle sleeve (3); the radius of the oil drain hole (5) is larger than that of the side hole (6); a first O-shaped sealing ring (12), a second O-shaped sealing ring (13) and a third O-shaped sealing ring (14) are arranged between the pipe column main body (1) and the sliding sleeve (2), the first O-shaped sealing ring (12) and the second O-shaped sealing ring (13) are respectively positioned at two sides of the oil drain hole (5) through annular grooves arranged at the outer side of the pipe column main body (1), the first O-shaped sealing ring (12) is propped against the inner side of the sliding sleeve (2), an annular gap (11) is arranged between the second O-shaped sealing ring (13) and the inner side of the sliding sleeve (2), and the third O-shaped sealing ring (14) is arranged in annular grooves formed at the inner side of the sliding sleeve (2); when tubular column main part (1) is connected through shear pin (4) with sliding sleeve (2), the distance of the front end of sliding sleeve (2) to drain hole (5) center is L1, and the distance of the rear end of sliding sleeve (2) to fender cover (3) is L2, and the distance of third O type sealing washer (14) of sliding sleeve (2) to shear pin (4) is L3, satisfies L3> L2> L1.
2. The oil drain device according to claim 1, wherein: an annular gasket (16) is arranged between the baffle plate (8) and the groove close to the oil drain hole (5).
3. The oil drain device according to claim 1, wherein: the outside of the pipe column main body (1) is provided with a convex limiting step (15), the limiting step (15) is positioned on one side of the oil drain hole (5) away from the baffle sleeve (3), and when the pipe column main body (1) is connected with the sliding sleeve (2) through the shear pins (4), the front end part of the sliding sleeve (2) is just propped against the limiting step (15) on the outside of the pipe column main body (1).
4. The oil drain device according to claim 1, wherein: the number of the side holes (6) is 3-6.
5. The oil drain device according to claim 1, wherein: the pressing cap (9) is connected with the groove through threads.
6. The oil drain device according to claim 1, wherein: the baffle (8) is made of metal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811073701.2A CN108843271B (en) | 2018-09-14 | 2018-09-14 | Oil drainage device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811073701.2A CN108843271B (en) | 2018-09-14 | 2018-09-14 | Oil drainage device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108843271A CN108843271A (en) | 2018-11-20 |
| CN108843271B true CN108843271B (en) | 2024-04-05 |
Family
ID=64189524
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811073701.2A Active CN108843271B (en) | 2018-09-14 | 2018-09-14 | Oil drainage device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108843271B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110984910A (en) * | 2019-11-27 | 2020-04-10 | 淮安市井神钻采机具有限公司 | Energy-saving environment-friendly integral spraying anti-corrosion oil drain device |
| CN111677481A (en) * | 2020-06-08 | 2020-09-18 | 辽宁新华仪器有限公司 | High-pressure oil drainage tool |
| CN112796702B (en) * | 2021-03-17 | 2021-10-15 | 大庆市天德忠石油科技有限公司 | Sliding sleeve plate type oil drain device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201007196Y (en) * | 2006-04-03 | 2008-01-16 | 常会军 | Injection-pick-pump oil drainage device |
| CN201953351U (en) * | 2011-01-29 | 2011-08-31 | 阜宁县宏达石化机械有限公司 | Sliding sleeve oil drainage device |
| CN203570265U (en) * | 2013-12-04 | 2014-04-30 | 胡锁涵 | Slide sleeve oil extracting and draining device |
| CN205445548U (en) * | 2015-12-30 | 2016-08-10 | 中国石油天然气股份有限公司 | Outer sliding sleeve formula hydraulic pressure bleeder |
| CN107916909A (en) * | 2016-10-09 | 2018-04-17 | 中国石油天然气股份有限公司 | A kind of baffle bleeder |
| CN208885242U (en) * | 2018-09-14 | 2019-05-21 | 天津大港油田石油工程研究院钻采技术开发有限公司 | A kind of drainage device |
-
2018
- 2018-09-14 CN CN201811073701.2A patent/CN108843271B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201007196Y (en) * | 2006-04-03 | 2008-01-16 | 常会军 | Injection-pick-pump oil drainage device |
| CN201953351U (en) * | 2011-01-29 | 2011-08-31 | 阜宁县宏达石化机械有限公司 | Sliding sleeve oil drainage device |
| CN203570265U (en) * | 2013-12-04 | 2014-04-30 | 胡锁涵 | Slide sleeve oil extracting and draining device |
| CN205445548U (en) * | 2015-12-30 | 2016-08-10 | 中国石油天然气股份有限公司 | Outer sliding sleeve formula hydraulic pressure bleeder |
| CN107916909A (en) * | 2016-10-09 | 2018-04-17 | 中国石油天然气股份有限公司 | A kind of baffle bleeder |
| CN208885242U (en) * | 2018-09-14 | 2019-05-21 | 天津大港油田石油工程研究院钻采技术开发有限公司 | A kind of drainage device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108843271A (en) | 2018-11-20 |
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| PB01 | Publication | ||
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| TA01 | Transfer of patent application right |
Effective date of registration: 20201103 Address after: 300000 No. three, Dagang Oilfield, Binhai New Area, Tianjin Applicant after: Tianjin Dagang Oilfield Petroleum Engineering Research Institute Drilling Technology Development Co.,Ltd. Applicant after: DAGANG OILFIELD GROUP Co.,Ltd. Applicant after: CHINA NATIONAL PETROLEUM Corp. Address before: 300000 No. three, Dagang Oilfield, Binhai New Area, Tianjin Applicant before: Tianjin Dagang Oilfield Petroleum Engineering Research Institute Drilling Technology Development Co.,Ltd. |
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