CN106703710B - Intelligent joint for separate production of oil well with electric submersible pump - Google Patents
Intelligent joint for separate production of oil well with electric submersible pump Download PDFInfo
- Publication number
- CN106703710B CN106703710B CN201710147054.4A CN201710147054A CN106703710B CN 106703710 B CN106703710 B CN 106703710B CN 201710147054 A CN201710147054 A CN 201710147054A CN 106703710 B CN106703710 B CN 106703710B
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- Prior art keywords
- half body
- production
- logging
- channel
- valve cover
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 93
- 239000003129 oil well Substances 0.000 title description 7
- 230000000149 penetrating effect Effects 0.000 claims abstract description 3
- 238000007789 sealing Methods 0.000 claims description 18
- 229910000831 Steel Inorganic materials 0.000 claims description 15
- 239000010959 steel Substances 0.000 claims description 15
- 238000000605 extraction Methods 0.000 claims description 14
- 210000004907 gland Anatomy 0.000 claims description 9
- 239000012530 fluid Substances 0.000 description 6
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000009849 deactivation Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
Images
Classifications
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- 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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
-
- 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
- E21B34/08—Valve arrangements for boreholes or wells in wells responsive to flow or pressure of the fluid obtained
-
- 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
- E21B2200/06—Sleeve valves
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (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)
- Mechanical Engineering (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention provides an intelligent joint for separate production of an oil production well of an electric submersible pump, which comprises an oil production half body and a logging half body which are fixedly connected in a contraposition mode, wherein a first production channel is arranged in the oil production half body, a second production channel is arranged in the upper inner portion of the logging half body, a logging channel is arranged in the lower inner portion of the logging half body, a valve cover assembly is arranged at the junction of the first production channel and the logging channel, an oil production half body short joint is installed on the lower portion of the first production channel, a piston assembly and a reset spring are arranged in the oil production half body short joint, a flexible cable penetrating through the oil production half body short joint is installed in the upper inner portion of the oil production half body, one end of the flexible cable is connected with the valve cover assembly, the other end of the flexible cable is connected with the piston assembly, the valve cover. The invention has simple and compact structure and wide market development prospect.
Description
Technical Field
The invention belongs to the field of oil field oil extraction downhole tools, and particularly relates to an intelligent sub-production joint of an electric submersible pump oil production well, which can perform logging or downhole operation at any time in the oil field oil extraction process.
Background
Currently, a separate production string for oil extraction of an electric submersible pump in an oil field generally adopts a Y-shaped joint with a blanking plug, and the blanking plug is lowered to the Y-shaped joint and set at a preset position by adopting steel wire operation during production, so that a logging channel is closed to realize normal production of the oil field; when logging or downhole operation is required, stopping the electric submersible pump, deblocking the blanking plug by using steel wire operation, lifting the blanking plug to the ground, and opening a logging channel; after the well logging or the downhole operation is finished, the blanking plug is sent to the downhole by steel wire operation, and the electric submersible pump is started to recover the production.
Although the Y-shaped joint solves the problem that dynamic logging or downhole operation can be carried out without lifting a tubing string, the pumping must be stopped and two times of steel wire operation must be carried out in each logging or downhole operation, and frequent steel wire operation not only occupies a large amount of operation time, but also greatly reduces the normal production time of an oil well, thereby causing high production cost.
Disclosure of Invention
Therefore, the invention aims to overcome the defects and shortcomings in the prior art and provide the intelligent joint for the separate production of the oil production well of the electric submersible pump, which is simple, quick, convenient and compact in structure.
Specifically, in order to achieve the above object, the present invention provides the following technical solutions:
the invention discloses an intelligent joint for separate production of an oil production well of an electric submersible pump, which comprises an oil production half body and a logging half body which are fixedly connected in a contraposition mode, wherein a first production channel is arranged in the oil production half body, a second production channel is arranged in the logging half body, a logging channel is arranged in the lower portion of the logging half body, a valve cover assembly is arranged at the junction of the first production channel and the logging channel, an oil production half body short joint is arranged at the lower portion of the first production channel, a piston assembly and a return spring are arranged in the oil production half body short joint, a flexible cable penetrating through the oil production short joint is arranged in the oil production half body, one end of the flexible cable is connected with the valve cover assembly, the other end of the flexible cable is connected with the piston assembly, the valve cover assembly is hinged to the logging half body through a rotating shaft, and.
According to the intelligent joint for separate production of the oil production well of the electric submersible pump, the oil production half short circuit is internally provided with the guide sleeve, the guide sleeve is sleeved outside the piston assembly and is fixedly connected with the oil production half short circuit, and the reset spring is positioned between the guide sleeve and the guide rod.
According to the intelligent joint for separate production of the oil production well of the electric submersible pump, the valve cover assembly comprises a valve cover, a pressure relief device, a supporting seat and a guide wheel. Because the pressure in the production channel is obviously higher than the pressure in the logging channel in the oil production state, the production channel and the logging channel need to be communicated for pressure relief before the valve cover assembly is opened. In one embodiment, the pressure relief device comprises a gland, a mandrel, a plug, a steel ball, a pressure relief hole, a spring, a pressure relief channel, a mandrel shoulder, a gland shoulder. When the underground electric submersible pump stops working, the return spring acts on the piston assembly to drive the flexible cable to pull the guide wheel and the supporting seat to rotate around the rotating shaft and compress the torsion spring, the valve cover assembly cannot be opened because the pressure in the production channel is higher than the pressure in the logging channel at the moment, the supporting seat drives the mandrel and the spring, the steel ball moves upwards, the production channel is communicated with the logging channel through the pressure relief hole and the pressure relief channel, the mandrel continues to move upwards to be in contact with the shoulder of the pressing cover, and the valve cover assembly is opened after the pressure in the production channel is balanced with the pressure in the logging channel.
According to the intelligent joint for the separate production of the oil production well of the electric submersible pump, the logging half body is provided with the first sealing conical surface, and when the valve cover assembly rotates to the logging half body, the first sealing conical surface and the second sealing conical surface on the valve cover form a sealing pair.
According to the intelligent joint for separate production of the oil production well of the electric submersible pump, the flexible cable is a steel wire rope.
The technical scheme of the invention has the following beneficial effects and advantages: the invention utilizes the pressure of well liquid, and realizes that the valve cover assembly automatically opens or closes a logging channel along with the start or stop of the underground electric submersible pump through the piston, the flexible cable, the torsion spring and the return spring. When the logging channel is partially closed (a downhole logging instrument is arranged in the logging channel), the piston part can be pushed by pumped well fluid to move upwards, and due to the adoption of the design of the flexible cable, the upward stroke of the piston part is not restricted by the position of the valve cover assembly, so that the logging and the production can be simultaneously carried out; in addition, the invention adopts compact structural layout such as nesting arrangement of multilayer sleeve type pistons and return springs and the like through the ingenious design of the fluid channel, thereby greatly reducing the length size of the Y-shaped joint.
Drawings
Embodiments of the invention are described in detail below with reference to the attached drawing figures, wherein:
FIG. 1 is a schematic diagram showing the pump deactivation state of the present invention;
FIG. 2 shows a schematic of the configuration of the present invention in a logging and/or production state;
fig. 3 shows a schematic of the valve cover assembly of the present invention.
Description of reference numerals:
1 upper joint, 2 oil production half body, 3 logging half body, 4 valve cover assembly, 5 shafts, 6 torsion springs, 7 flexible cables, 8 lower joint, 9 oil production half body short joint, 10 guide sleeve, 11 guide rod, 12 reset spring, 13 piston, 14 pin shafts, 15 oil production half body joint, 101 first production channel, 102 second production channel, 103 logging channel, 104 guide sleeve long hole, 105 guide rod long hole, 201 downhole logging instrument, 301 valve cover, 302 gland, 303 mandrel, 304 plug, 305 steel ball, 306 pressure relief hole, 307 spring, 308 pressure relief channel, 309 support seat, 310 guide wheel, 311 mandrel shoulder, 312 gland shoulder, 401 guide sleeve shoulder, 401 annular space, shoulder 403 of piston, 404 piston bottom surface, 405 first sealing conical surface, 406 second sealing, 407 guide rod inner hole, 408 oil production half body inner hole.
Detailed Description
The invention is further illustrated by the following specific examples, which, however, are to be construed as merely illustrative, and not limitative of the remainder of the disclosure in any way whatsoever.
Example 1
This example is used to illustrate the structure of the intelligent joint for separate production of an electric submersible pump oil well according to the present invention.
Referring to fig. 1 to 3, the sub-production intelligent joint of the electric submersible pump oil production well comprises an oil production half body 2 and a logging half body 3 which are fixedly connected in an alignment manner. A first production channel 101 is arranged in the oil production half body 2, a second production channel 102 is arranged in the upper interior of the logging half body 3, a logging channel 103 is arranged in the lower interior of the logging half body, a valve cover assembly 4 is arranged at the intersection of the first production channel 101 and the logging channel 103, the valve cover assembly 4 comprises a valve cover 301, a gland 302, a mandrel 303, a plug 304, a steel ball 305, a pressure relief hole 306, a spring 307, a pressure relief channel 308, a supporting seat 309, a guide wheel 310, a mandrel shoulder 311 and a gland shoulder 312, and the steel ball 305 blocks the pressure relief hole 306 under the thrust action of the spring 307. An oil extraction half short circuit 9 is installed on the lower portion of a first production channel 101 of the oil extraction half body 2, a piston assembly (at least comprising a piston 13 and a guide rod 11), a reset spring 12 and a guide sleeve 10 are arranged in the oil extraction half body short circuit 9, the guide sleeve 10 is sleeved outside the guide rod 11 and fixedly connected with the oil extraction half body short circuit 9, the reset spring 12 is located between the guide sleeve 10 and the guide rod 11, a flexible cable 11 is installed inside the oil extraction half body 2, the flexible cable 11 penetrates through the oil extraction half body short circuit 9, the flexible cable 11 can be a steel wire rope, one end of the flexible cable is connected with a guide wheel 310 of a valve cover assembly 4, the other end of the flexible cable is connected with the piston 13, the valve cover assembly 4 is hinged with a logging half body 3 through a rotating shaft, and.
To facilitate sealing, a first sealing cone 405 is provided on body 3, and when bonnet assembly 4 is rotated into body 3, first sealing cone 405 forms a sealing pair with a second sealing cone 406 on bonnet 301.
Example 2
The embodiment is used for explaining the working principle of the intelligent joint for separate production of the oil production well with the electric submersible pump.
In the production state of an oil well, the electric submersible pump is started, well fluid flows upwards under the action of the electric submersible pump and acts on the bottom surface 404 of the piston 13, the piston 13 and the guide rod 11 are pushed by the well fluid to move upwards against the resistance of the return spring 12, the flexible cable 7 is loosened, the valve cover assembly 4 rotates from one side of the oil production half body 2 to one side of the logging half body 3 under the action of the torsion spring 6, the second sealing conical surface 406 on the valve cover 301 and the first sealing conical surface 405 on the logging half body 3 form a sealing pair to close the logging channel 103, at the moment, the piston 13 and the guide rod 11 continue to move upwards, and the return spring 12 is in a compressed state. When the shoulder 403 on the upper part of the piston 13 contacts the shoulder 401 on the guide sleeve 10, the piston 13 stops moving, and well fluid passes through the guide sleeve long hole 104, the annular space 402 between the production half short 9 and the guide sleeve 10 and the guide rod long hole 105, and sequentially enters the inner hole 407 of the guide rod 11, the inner hole 408 of the production half short 9, the first production channel 101 arranged inside the production half 2 and the second production channel 102 arranged inside the logging half 3 to be directly lifted to the ground inlet.
When the oil well stops producing, the well fluid stops flowing upwards, the piston 13 moves downwards under the tension of the return spring 12 to drive the flexible cable 7 to pull the guide wheel 310 and the supporting seat 309 to rotate around the rotating shaft and compress the torsion spring 6, the supporting seat 309 drives the mandrel 303 and the spring 307, the steel ball 305 moves upwards, the production channel is communicated with the logging channel through the pressure relief hole 306 and the pressure relief channel 308, the mandrel 303 continues moving upwards to be contacted with the gland shoulder 312, and when the pressure in the production channel is balanced with the pressure in the logging channel, the valve cover assembly 4 is rotated to one side of the oil extraction half body 2, so that the logging channel 103 is opened, the downhole logging instrument 201 passes through, and the downhole logging operation is performed.
If oil extraction and logging are required, when the oil well is in a production stop state, the underground logging instrument 201 is enabled to pass through, then the electric submersible pump is started, at the moment, the valve cover assembly 4 cannot be completely closed, and the valve cover assembly 4 abuts against the underground logging instrument 201, so that simultaneous operation of oil extraction and logging is realized. (see FIG. 2).
Although the present invention has been described to a certain extent, it is apparent that appropriate changes in the respective conditions may be made without departing from the spirit and scope of the present invention. It is to be understood that the invention is not limited to the described embodiments, but is to be accorded the scope consistent with the claims, including equivalents of each element described.
Claims (2)
1. An intelligent joint for separate production of an oil production well of an electric submersible pump comprises an oil production half body and a logging half body which are fixedly connected in an opposite position, and is characterized in that a first production channel is arranged in the oil production half body, a second production channel is arranged in the upper inner portion of the logging half body, a logging channel is arranged in the lower inner portion of the logging half body, a valve cover assembly is arranged at the intersection of the first production channel and the logging channel, an oil production half body short circuit is installed on the lower portion of the first production channel, a piston assembly and a reset spring are arranged in the oil production half body short circuit, a flexible cable penetrating through the oil production half body short circuit is installed in the oil production half body, one end of the flexible cable is connected with the valve cover assembly, the other end of the flexible cable is connected with the piston assembly, the valve cover assembly is hinged with the logging half body through a rotating shaft, and;
the oil extraction half body short circuit is internally provided with a guide sleeve, the guide sleeve is sleeved outside the piston assembly and is fixedly connected with the oil extraction half body short circuit, and the reset spring is positioned between the guide sleeve and the guide rod;
the logging half body is provided with a first sealing conical surface, and when the valve cover assembly rotates to the logging half body, the first sealing conical surface and a second sealing conical surface on the valve cover form a sealing pair;
the valve cover assembly comprises a valve cover, a pressure relief device, a supporting seat and a guide wheel;
the pressure relief device comprises a gland, a mandrel, a plug, a steel ball, a pressure relief hole, a spring, a pressure relief channel, a mandrel shoulder and a gland shoulder.
2. The intelligent joint of claim 1, wherein the flexible cable is a steel wire rope.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710147054.4A CN106703710B (en) | 2017-03-13 | 2017-03-13 | Intelligent joint for separate production of oil well with electric submersible pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710147054.4A CN106703710B (en) | 2017-03-13 | 2017-03-13 | Intelligent joint for separate production of oil well with electric submersible pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106703710A CN106703710A (en) | 2017-05-24 |
| CN106703710B true CN106703710B (en) | 2020-06-12 |
Family
ID=58916890
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710147054.4A Active CN106703710B (en) | 2017-03-13 | 2017-03-13 | Intelligent joint for separate production of oil well with electric submersible pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106703710B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87215698U (en) * | 1987-11-17 | 1988-08-24 | 胜利油田会战指挥部现河采油指挥部 | Electric submerged pump cable protector |
| CN2054482U (en) * | 1989-04-15 | 1990-03-14 | 吉林省油田管理局扶余采油一厂 | Double-level three-purpose deep-well christmas pump |
| CN2846708Y (en) * | 2005-09-29 | 2006-12-13 | 中国海洋石油总公司 | Intelligent joint for oil well electric pump separate production |
| RU2314410C2 (en) * | 2005-11-14 | 2008-01-10 | Виктор Васильевич Совпель | Reusable implosion hydraulic pressure generator |
| RU2315174C1 (en) * | 2006-05-22 | 2008-01-20 | Открытое акционерное общество "Северо-Кавказский научно-исследовательский проектный институт природных газов" Открытого акционерного общества "Газпром" (ОАО "СевКавНИПИгаз" ОАО "Газпром") | Device for sand plug removal from well |
| CN105569607A (en) * | 2016-02-23 | 2016-05-11 | 天津伊诺科技开发有限公司 | Multifunctional well washing valve for oil field electric submersible pump production oil well |
| CN207177757U (en) * | 2017-03-13 | 2018-04-03 | 天津伊诺科技开发有限公司 | A kind of electric submersible pumping well separate-extraction intelligent joint |
-
2017
- 2017-03-13 CN CN201710147054.4A patent/CN106703710B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87215698U (en) * | 1987-11-17 | 1988-08-24 | 胜利油田会战指挥部现河采油指挥部 | Electric submerged pump cable protector |
| CN2054482U (en) * | 1989-04-15 | 1990-03-14 | 吉林省油田管理局扶余采油一厂 | Double-level three-purpose deep-well christmas pump |
| CN2846708Y (en) * | 2005-09-29 | 2006-12-13 | 中国海洋石油总公司 | Intelligent joint for oil well electric pump separate production |
| RU2314410C2 (en) * | 2005-11-14 | 2008-01-10 | Виктор Васильевич Совпель | Reusable implosion hydraulic pressure generator |
| RU2315174C1 (en) * | 2006-05-22 | 2008-01-20 | Открытое акционерное общество "Северо-Кавказский научно-исследовательский проектный институт природных газов" Открытого акционерного общества "Газпром" (ОАО "СевКавНИПИгаз" ОАО "Газпром") | Device for sand plug removal from well |
| CN105569607A (en) * | 2016-02-23 | 2016-05-11 | 天津伊诺科技开发有限公司 | Multifunctional well washing valve for oil field electric submersible pump production oil well |
| CN207177757U (en) * | 2017-03-13 | 2018-04-03 | 天津伊诺科技开发有限公司 | A kind of electric submersible pumping well separate-extraction intelligent joint |
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| Publication number | Publication date |
|---|---|
| CN106703710A (en) | 2017-05-24 |
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