CN112483065A - Sand setting device and method - Google Patents
Sand setting device and method Download PDFInfo
- Publication number
- CN112483065A CN112483065A CN202011275572.2A CN202011275572A CN112483065A CN 112483065 A CN112483065 A CN 112483065A CN 202011275572 A CN202011275572 A CN 202011275572A CN 112483065 A CN112483065 A CN 112483065A
- Authority
- CN
- China
- Prior art keywords
- sand
- pipe
- oil pipe
- hole
- suspension joint
- 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.)
- Granted
Links
- 239000004576 sand Substances 0.000 title claims abstract description 109
- 238000000034 method Methods 0.000 title claims abstract description 8
- 238000009825 accumulation Methods 0.000 claims abstract description 40
- 239000000725 suspension Substances 0.000 claims abstract description 36
- 239000007788 liquid Substances 0.000 claims abstract description 24
- 230000008878 coupling Effects 0.000 claims abstract description 16
- 238000010168 coupling process Methods 0.000 claims abstract description 16
- 238000005859 coupling reaction Methods 0.000 claims abstract description 16
- 239000003129 oil well Substances 0.000 claims abstract description 15
- 238000004891 communication Methods 0.000 claims abstract description 10
- 239000012530 fluid Substances 0.000 claims description 7
- 238000005086 pumping Methods 0.000 claims description 4
- 239000007769 metal material Substances 0.000 claims description 3
- 229910052755 nonmetal Inorganic materials 0.000 claims description 3
- 230000000903 blocking effect Effects 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000002035 prolonged effect Effects 0.000 abstract description 2
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
- E21B43/34—Arrangements for separating materials produced by the well
- E21B43/38—Arrangements for separating materials produced by the well in the well
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
Abstract
The invention relates to a sand setting device and a method. The technical scheme is as follows: the inner diameters of the upper oil pipe and the lower oil pipe are the same, the maximum outer diameter of the suspension joint is larger than the inner diameters of the upper oil pipe and the lower oil pipe, the maximum outer diameter of the suspension joint is smaller than the inner diameter of the coupling, a through hole is formed in the suspension joint, threads are arranged on the lower portion of the through hole, threads on the upper portion of the sand accumulation pipe are connected with threads on the lower portion of the through hole, a communication slotted hole is formed in the upper portion of the sand accumulation pipe, the sand accumulation pipe is placed in the lower oil pipe, the suspension joint is located on the upper end face of the lower oil pipe, the upper oil pipe, the coupling and the lower oil pipe are sequentially connected, and the upper. The beneficial effects are as follows: the electric submersible centrifugal pump and sand can be prevented from blocking a liquid flow channel, the production stop of an oil well of the electric submersible centrifugal pump can be reduced, and the production time of the electric pump oil well is prolonged.
Description
Technical Field
The invention relates to a device for a production well of an electric submersible centrifugal pump in an oil field, in particular to a sand setting device and a method.
Background
At present, the production string of the electric submersible centrifugal pump is an optical oil pipe above the electric submersible centrifugal pump, when the pump is stopped due to reasons, sand in well fluid is separated and then sinks, and falls on the electric submersible centrifugal pump, so that the problems that the electric submersible centrifugal pump and sand block a liquid flow channel occur, the oil well of the electric submersible centrifugal pump cannot be opened, the electric submersible centrifugal pump is damaged, the pump needs to be operated again, and great economic loss is caused. In order to avoid the problems, technicians develop a sand setting device, for example, Chinese patent 2005201265824 electric pump sand setting device, which solves the problem, but an outer pipe of the sand setting device can only use a field phi 73 oil pipe, the inner diameter of the outer pipe is phi 62, a descending sand setting pipe is in a central position, the sand setting pipe occupies a liquid flow channel, and the liquid outlet channel is a concentric annular channel, so that the liquid flow resistance is increased, and the smoothness of liquid flow is influenced.
Disclosure of Invention
The invention aims to provide a sand setting device and a method aiming at the defects in the prior art, wherein the sand setting device is arranged on an electric submersible centrifugal pump, prevents the electric submersible centrifugal pump from being buried in a pump and blocking a liquid flow channel, prolongs the production time of an oil well, and can reduce the liquid flow resistance and improve the smoothness of liquid flow.
The invention provides a sand setting device, which adopts the technical scheme that: comprises an upper oil pipe (1), a suspension joint (2), a coupling (3), a sand accumulation pipe (4), a lower oil pipe (5) and a check valve (6), wherein the inner diameters of the upper oil pipe (1) and the lower oil pipe (5) are the same, a through hole (2.1) is arranged inside the suspension joint (2), the lower part of the through hole (2.1) is provided with threads, the threads on the upper part of the sand accumulation pipe (4) are connected with the threads on the lower part of the through hole (2.1), the upper part of the sand accumulation pipe (4) is provided with more than one communicating slotted hole (4.1), the sand accumulation pipe (4) is placed in the oil discharge pipe (5), the sand accumulation pipe (4) is provided with a check valve (6) at the lower part, the suspension joint (2) is located on the upper end surface of the lower oil pipe (5), the upper oil pipe (1), the coupling (3) and the lower oil pipe (5) are sequentially connected, and the upper shoulder surface of the suspension joint (2) is positioned below the lower end surface of the upper oil pipe (1).
Preferably, the suspension joint (2) adopts an eccentric structure, so that after the upper thread of the sand accumulation pipe (4) is connected with the lower thread of the through hole (2.1), the sand accumulation pipe (4) is close to one side of the inner wall of the lower oil pipe (5), and a crescent-shaped channel (5.1) is formed between the sand accumulation pipe (4) and the lower oil pipe (5).
Preferably, the axis of the lower thread of the suspension joint (2) is not coaxial with the axis of the outer wall of the suspension joint (2).
Preferably, the maximum outer diameter of the suspension joint (2) is larger than the inner diameters of the upper oil pipe (1) and the lower oil pipe (5), and the maximum outer diameter of the suspension joint (2) is smaller than the inner diameter of the coupling (3).
Preferably, the valve ball in the check valve (6) is made of non-metal materials.
Preferably, the communication slot hole (4.1) is a long strip-shaped hole or an oval hole.
The use method of the sand setting device comprises the following steps:
firstly, a sand setting device is arranged on an electric submersible centrifugal pump, a crescent channel (5.1) is formed between the inner wall of a lower oil pipe (5) and the outer wall of a sand accumulation pipe (4), and well fluid flows into an upper oil pipe (1) through the channel and the communication slot hole (4.1) and then flows to the ground;
then, when the oil well stops pumping due to reasons, sand in well liquid is separated and then sinks to fall into the sand accumulation pipe (4), and the check valve (6) blocks in the sand accumulation pipe (4), so that the sand cannot fall on the electric submersible centrifugal pump;
when sand does not appear in the oil well or before the pump is not stopped at the initial starting stage, the liquid flow can flow upwards through the check valve (6), so that the flow resistance of the liquid flow can be reduced;
if the oil well produces a small amount of sand, the sand deposited on the check valve (6) is limited, and the sand can be flushed out by the liquid flow to be carried to the ground when the pump is started to produce; if the pump is stopped for a short time, the sand deposited on the check valve (6) is limited, and the sand can be flushed out and carried to the ground when the pump is started for production.
Compared with the prior art, the invention has the following beneficial effects:
the invention can collect the sand which sinks after the pumping is stopped due to the accident into the sand accumulation pipe, the sand can not fall on the electric submersible centrifugal pump, the sand can be prevented from blocking a liquid flow channel by sand jam of the electric submersible centrifugal pump and the sand, the production stop of an oil well of the electric submersible centrifugal pump can be reduced, the production time of the electric pump oil well can be prolonged, the sand accumulation pipe is close to one side of the inner wall of the oil discharge pipe, the flow channel between the sand accumulation pipe and the oil discharge pipe is centralized, the liquid flow resistance can be reduced, the smoothness of the liquid flow can be improved, the check valve is arranged at the lower part of the sand accumulation pipe, the sand accumulation pipe can play the role of the flow channel when no sand exists in the sand accumulation pipe, the liquid.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;
in the upper diagram: the oil pipe comprises an upper oil pipe 1, a suspension joint 2, a coupling 3, a sand accumulation pipe 4, a lower oil pipe 5, a check valve 6, a through hole 2.1, a communication slotted hole 4.1 and a crescent channel 5.1.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.
Embodiment 1, referring to fig. 1 and 2, the sand setting device provided by the invention comprises an upper oil pipe 1, a suspension joint 2, a coupling 3, a sand accumulating pipe 4, a lower oil pipe 5 and a check valve 6, wherein the inner diameters of the upper oil pipe 1 and the lower oil pipe 5 are the same, a through hole 2.1 is formed in the suspension joint 2, the lower part of the through hole 2.1 is provided with a thread, the upper thread of the sand accumulating pipe 4 is in threaded connection with the lower part of the through hole 2.1, the upper part of the sand accumulating pipe 4 is provided with more than one communication slotted hole 4.1, the sand accumulating pipe 4 is placed in the lower oil pipe 5, the check valve 6 is installed at the lower part of the sand accumulating pipe 4, the suspension joint 2 is located on the upper end face of the lower oil pipe 5, the upper oil pipe 1, the coupling 3 and the lower oil pipe 5 are sequentially connected, and the upper shoulder face of the suspension joint 2 is located.
Referring to the attached drawing 1, the suspension joint 2 adopts an eccentric structure, so that after the upper thread of the sand accumulation pipe 4 is connected with the lower thread of the through hole 2.1, the sand accumulation pipe 4 is close to one side of the inner wall of the lower oil pipe 5, and a crescent-shaped channel 5.1 is formed between the sand accumulation pipe 4 and the lower oil pipe 5; the axis of the lower thread of the suspension joint 2 is not coaxial with the axis of the outer wall of the suspension joint 2; the maximum outer diameter of the suspension joint 2 is larger than the inner diameters of the upper oil pipe 1 and the lower oil pipe 5, and the maximum outer diameter of the suspension joint 2 is smaller than the inner diameter of the coupling 3.
In addition, the valve ball in the check valve 6 is made of a non-metal material, the check valve is light in weight and easy to open, the upper oil pipe 1, the coupling 3 and the lower oil pipe 5 are pipe fittings used on site, the upper oil pipe 1 and the lower oil pipe 5 are generally phi 73 oil pipes, the upper oil pipe 1, the coupling 3 and the lower oil pipe 5 are standard parts, and the communicating slotted hole 4.1 is a long-strip-shaped hole, so that well fluid can conveniently enter an inner cavity of the sand accumulation pipe through the hole.
The use method of the sand setting device comprises the following steps:
firstly, a sand setting device is arranged on an electric submersible centrifugal pump, a crescent channel 5.1 is formed between the inner wall of a lower oil pipe 5 and the outer wall of a sand accumulation pipe 4, and well fluid flows into an upper oil pipe 1 through the channel and the communication slot hole 4.1 and then flows to the ground;
then, when the oil well stops pumping due to reasons, the sand in the well fluid sinks after being separated and falls into the sand accumulation pipe 4, and the check valve 6 blocks the sand accumulation pipe 4, so that the sand cannot fall on the electric submersible centrifugal pump;
when sand does not appear in the oil well or before the pump is not stopped at the initial starting stage, the liquid flow can flow upwards through the check valve 6, so that the flow resistance of the liquid flow can be reduced;
if the oil well produces a small amount of sand, the sand deposited on the check valve 6 is limited, and the sand can be flushed out by the liquid flow to be carried to the ground when the pump is started to produce; if the pump is stopped for a short time, the sand deposited on the check valve 6 is limited, and the sand can be flushed out and carried to the ground when the pump is started for production.
The difference from the embodiment 1 is that: the communication slot hole 4.1 is an elliptical hole, so that well fluid can conveniently enter the inner cavity of the sand accumulation pipe through the hole.
The above description is only a few of the preferred embodiments of the present invention, and any person skilled in the art may modify the above-described embodiments or modify them into equivalent ones. Therefore, the technical solution according to the present invention is subject to corresponding simple modifications or equivalent changes, as far as the scope of the present invention is claimed.
Claims (7)
1. The utility model provides a sand setting device which characterized by: comprises an upper oil pipe (1), a suspension joint (2), a coupling (3), a sand accumulation pipe (4), a lower oil pipe (5) and a check valve (6), wherein the inner diameters of the upper oil pipe (1) and the lower oil pipe (5) are the same, a through hole (2.1) is arranged inside the suspension joint (2), the lower part of the through hole (2.1) is provided with threads, the threads on the upper part of the sand accumulation pipe (4) are connected with the threads on the lower part of the through hole (2.1), the upper part of the sand accumulation pipe (4) is provided with more than one communicating slotted hole (4.1), the sand accumulation pipe (4) is placed in the oil discharge pipe (5), the sand accumulation pipe (4) is provided with a check valve (6) at the lower part, the suspension joint (2) is located on the upper end surface of the lower oil pipe (5), the upper oil pipe (1), the coupling (3) and the lower oil pipe (5) are sequentially connected, and the upper shoulder surface of the suspension joint (2) is positioned below the lower end surface of the upper oil pipe (1).
2. A sand setting device as claimed in claim 1, wherein: the suspension joint (2) adopts an eccentric structure, so that after the upper thread of the sand accumulation pipe (4) is connected with the lower thread of the through hole (2.1), the sand accumulation pipe (4) is close to one side of the inner wall of the lower oil pipe (5), and a crescent channel (5.1) is formed between the sand accumulation pipe (4) and the lower oil pipe (5).
3. A sand setting device as claimed in claim 2, wherein: the axis of the lower thread of the suspension joint (2) is not coaxial with the axis of the outer wall of the suspension joint (2).
4. A sand setting device as claimed in claim 1, wherein: the maximum outer diameter of the suspension joint (2) is larger than the inner diameters of the upper oil pipe (1) and the lower oil pipe (5), and the maximum outer diameter of the suspension joint (2) is smaller than the inner diameter of the coupling (3).
5. A sand setting device as claimed in claim 1, wherein: and a valve ball in the check valve (6) is made of a non-metal material.
6. A sand setting device as claimed in claim 1, wherein: the communication slot hole (4.1) is a strip-shaped hole or an oval hole.
7. A method for using a sand setting device as claimed in any one of claims 1 to 6, comprising the steps of:
firstly, a sand setting device is arranged on an electric submersible centrifugal pump, a crescent channel (5.1) is formed between the inner wall of a lower oil pipe (5) and the outer wall of a sand accumulation pipe (4), and well fluid flows into an upper oil pipe (1) through the channel and the communication slot hole (4.1) and then flows to the ground;
then, when the oil well stops pumping due to reasons, sand in well liquid is separated and then sinks to fall into the sand accumulation pipe (4), and the check valve (6) blocks in the sand accumulation pipe (4), so that the sand cannot fall on the electric submersible centrifugal pump;
when sand does not appear in the oil well or before the pump is not stopped at the initial starting stage, the liquid flow can flow upwards through the check valve (6), so that the flow resistance of the liquid flow can be reduced;
if the oil well produces a small amount of sand, the sand deposited on the check valve (6) is limited, and the sand can be flushed out by the liquid flow to be carried to the ground when the pump is started to produce; if the pump is stopped for a short time, the sand deposited on the check valve (6) is limited, and the sand can be flushed out and carried to the ground when the pump is started for production.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011275572.2A CN112483065B (en) | 2020-11-16 | 2020-11-16 | Sand setting device and method |
| PCT/CN2020/129409 WO2022099726A1 (en) | 2020-11-16 | 2020-11-17 | Sand settling device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011275572.2A CN112483065B (en) | 2020-11-16 | 2020-11-16 | Sand setting device and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112483065A true CN112483065A (en) | 2021-03-12 |
| CN112483065B CN112483065B (en) | 2022-06-07 |
Family
ID=74930648
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011275572.2A Active CN112483065B (en) | 2020-11-16 | 2020-11-16 | Sand setting device and method |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN112483065B (en) |
| WO (1) | WO2022099726A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20230121121A1 (en) * | 2021-10-19 | 2023-04-20 | Saudi Arabian Oil Company | Nonmetallic downhole check valve to improve power water injector well safety and reliability |
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| CN1563724A (en) * | 2004-03-25 | 2005-01-12 | 东营市东营区创新科技有限公司 | Self-cleaning desilting device |
| CN206830130U (en) * | 2017-04-01 | 2018-01-02 | 中国石油天然气股份有限公司 | A kind of sand settling type ball-and-seat |
| CN208416477U (en) * | 2018-05-30 | 2019-01-22 | 胜利油田畅海石油技术有限公司 | Suppress ball seat self-cleaning sand setting device |
| CN109505550A (en) * | 2018-10-29 | 2019-03-22 | 东营市鑫聚合石油科技有限责任公司 | A kind of two-tube annular space sand setting sand-bailing equipment and technique |
| US20200291744A1 (en) * | 2016-09-13 | 2020-09-17 | Halliburton Energy Services, Inc. | Sand fall-back prevention tools |
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2020
- 2020-11-16 CN CN202011275572.2A patent/CN112483065B/en active Active
- 2020-11-17 WO PCT/CN2020/129409 patent/WO2022099726A1/en active Application Filing
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| CN1563724A (en) * | 2004-03-25 | 2005-01-12 | 东营市东营区创新科技有限公司 | Self-cleaning desilting device |
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| CN206830130U (en) * | 2017-04-01 | 2018-01-02 | 中国石油天然气股份有限公司 | A kind of sand settling type ball-and-seat |
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| CN109505550A (en) * | 2018-10-29 | 2019-03-22 | 东营市鑫聚合石油科技有限责任公司 | A kind of two-tube annular space sand setting sand-bailing equipment and technique |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20230121121A1 (en) * | 2021-10-19 | 2023-04-20 | Saudi Arabian Oil Company | Nonmetallic downhole check valve to improve power water injector well safety and reliability |
| US11828146B2 (en) * | 2021-10-19 | 2023-11-28 | Saudi Arabian Oil Company | Nonmetallic downhole check valve to improve power water injector well safety and reliability |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112483065B (en) | 2022-06-07 |
| WO2022099726A1 (en) | 2022-05-19 |
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Denomination of invention: A sand settling device and method Effective date of registration: 20231227 Granted publication date: 20220607 Pledgee: Dongying Rural Commercial Bank Co.,Ltd. Pledgor: DONGYING BAIHUA PETROLEUM TECHNOLOGY DEVELOPMENT Co.,Ltd. Registration number: Y2023980075105 |
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