CN111608598A - Cable-passing oil pipe rigid centering device - Google Patents
Cable-passing oil pipe rigid centering device Download PDFInfo
- Publication number
- CN111608598A CN111608598A CN202010618659.9A CN202010618659A CN111608598A CN 111608598 A CN111608598 A CN 111608598A CN 202010618659 A CN202010618659 A CN 202010618659A CN 111608598 A CN111608598 A CN 111608598A
- Authority
- CN
- China
- Prior art keywords
- pipe
- cable
- oil
- upper joint
- submersible
- 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
- 238000007789 sealing Methods 0.000 claims abstract description 9
- 238000010008 shearing Methods 0.000 claims abstract description 8
- 238000000034 method Methods 0.000 claims description 5
- 238000000605 extraction Methods 0.000 abstract description 5
- 229910000831 Steel Inorganic materials 0.000 abstract 1
- 238000013016 damping Methods 0.000 abstract 1
- 239000010959 steel Substances 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 5
- 230000002411 adverse Effects 0.000 description 4
- 239000003129 oil well Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 230000009189 diving Effects 0.000 description 1
- 238000007790 scraping Methods 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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/10—Wear protectors; Centralising devices, e.g. stabilisers
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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
- E21B17/023—Arrangements for connecting cables or wirelines to downhole devices
-
- 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
- E21B17/10—Wear protectors; Centralising devices, e.g. stabilisers
- E21B17/1078—Stabilisers or centralisers for casing, tubing or drill pipes
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
The invention relates to the technical field of oil extraction engineering, and belongs to a cable-passing oil pipe rigid centering device which is positioned between an underground unit of an oil-submersible screw pump and an oil extraction pipe column and allows an oil-submersible cable to pass through. The invention is used for solving the problems of centralizing, damping and protecting the submersible cable of the submersible screw pump downhole unit. The novel steel pipe shear comprises an upper joint (1), a central pipe (2), a clamping block (3), a spring (4), a hoop (5), a centralizing body (6), a shearing pin (7), a guide pin (8), a connecting pipe (9), a sealing ring (10) and a lower joint (11). The invention has the advantages of reasonable structure, easy use, capability of realizing rigid centralization of underground units and pipe columns, and the like.
Description
Technical Field
The invention relates to the technical field of oil extraction engineering, and belongs to a cable-passing oil pipe rigid centering device which is positioned between an underground unit of an oil-submersible screw pump and an oil extraction pipe column and allows an oil-submersible cable to pass through.
Background
The existing oil-submersible screw pump oil extraction downhole tubular column generally needs to be connected with a centering device between an oil pipe and a downhole unit so as to ensure that the tubular column and the unit are placed in the middle, the unit is convenient to go into the well and lift out, the damage caused by scraping and collision of an oil-submersible cable and the wall of a casing is avoided, and the vibration influence generated during the operation of the screw pump is reduced. Due to the existence of the submersible cable, the existing centering device is mainly an elastic centering device which is sleeved on an oil pipe, the outer diameter of the centering device is smaller than the inner diameter of a sleeve, and a slotted hole allowing the submersible cable to pass through is formed in the side face of the centering device. Because there is a clearance between elasticity centralizer and the sleeve pipe, can't effectively reduce the vibrations that screw pump during operation produced, can have relative rotary motion between elasticity centralizer and the oil pipe simultaneously, this can produce destructive damage to the oily cable of diving that passes elasticity centralizer to influence the life-span of whole unit in the pit.
In order to solve the technical problems, the invention provides a cable-passing oil pipe rigid centering device which can realize centering and centering of a pipe column and a unit, and simultaneously ensure that the centering device is rigidly clamped with a sleeve after being in place in a well, so as to protect an oil-submersible cable and effectively reduce vibration generated during the work of a screw pump and adverse effects of an elastic centralizer on the passing oil-submersible cable.
Disclosure of Invention
The invention aims to provide a cable-passing oil pipe rigid centering device, which can realize centering and centering of a pipe column and a downhole unit, protect a submersible cable, and effectively reduce vibration generated during the working of a screw pump and adverse effects of an elastic centralizer on the submersible cable.
The technical scheme adopted by the invention is as follows: the device consists of an upper joint, a central pipe, a clamping block, a spring, a hoop, a centralizing body, a shearing pin, a guide pin, a connecting pipe, a sealing ring and a lower joint; the upper joint is in threaded connection with the central pipe, the central pipe is in threaded connection with the guide pin, the connecting pipe is sleeved on the central pipe and is connected with the central pipe through the shear pin, the sealing ring is arranged between the connecting pipe and the central pipe for sealing, the upper part of the connecting pipe is in threaded connection with the centering body, the lower part of the connecting pipe is in threaded connection with the lower joint, and the clamping block is fixed on the centering body through the spring and the hoop.
The side surfaces of the upper joint, the righting body and the connecting pipe are provided with grooves through which the submersible cables pass.
The central tube can cut off the shearing pin and slide downwards in the connecting tube under the action of downward pressing axial load, and the upper joint can open the clamping block to clamp the clamping block on an outer sleeve in the process; when the axial load is removed, the central tube is lifted up to enable the clamping block to withdraw from the upper joint, shrink and reset, and the clamping block is separated from the clamped sleeve.
The working surface of the fixture block for clamping is smooth or provided with slip teeth.
The invention has the beneficial effects that:
1) the centering device realizes centering and centering of the pipe column and the underground unit, protects the submersible cable, and ensures that the centering device is rigidly clamped with the casing after being in place underground.
2) The invention can effectively reduce the vibration generated during the working of the screw pump and avoid elastic righting
The adverse effect of the device on the submersible cable is improved, and the reliability and the service life of the system component are improved.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Description of reference numerals: 1. an upper joint; 2. a central tube; 3. a clamping block; 4. a spring; 5. a hoop; 6. a body is straightened; 7. shearing the pin; 8. a guide pin; 9. taking over a pipe; 10. a seal ring; 11. a lower joint; 12. and (4) a groove.
Detailed Description
The invention is further explained by combining the attached drawings, and consists of an upper joint 1, a central pipe 2, a fixture block 3, a spring 4, a hoop 5, a centralizing body 6, a shearing pin 7, a guide pin 8, a connecting pipe 9, a sealing ring 10 and a lower joint 11; wherein the upper joint 1 is in threaded connection with the central pipe 2, the central pipe 2 is in threaded connection with the guide pin 8, the connecting pipe 9 is sleeved on the central pipe 2 and is connected with the central pipe 2 through the shearing pin 7, the sealing ring 10 is arranged between the connecting pipe 9 and the central pipe 2 for sealing, the upper part of the connecting pipe 9 is in threaded connection with the centralizing body 6, the lower part of the connecting pipe 9 is in threaded connection with the lower joint 11, and the fixture block 3 is fixed on the centralizing body 6 through the spring 4 and the hoop.
The side surfaces of the upper joint 1, the centralizing body 6 and the connecting pipe 9 are provided with grooves 12 through which the submersible cables pass.
The central tube 2 can cut off the shear pin 7 and slide downwards in the adapter tube 9 under the action of downward-pressing axial load, and the upper joint 1 can prop open the fixture block 3 to clamp the fixture block on an outer sleeve in the process; when the axial load is removed, the lifting central tube 2 can withdraw the fixture 3 from the upper joint 1 to shrink and reset, and the fixture is separated from the clamped sleeve.
The working surface of the fixture block 3 for clamping is smooth or provided with slip teeth.
In the field construction operation, the submersible cable is arranged between an oil pipe column and a submersible screw pump unit, and the submersible cable is embedded in the upper joint 1, the centralizer 6 and the groove 12 on the side surface of the connecting pipe 9 and is fixed on the submersible cable through the hoop 5. In the process of putting the oil well into the oil well, the centralizing body 7 and the clamping block 3 are in a contraction reset state, and only the centering centralizing body centralizes the pipe column and the underground unit, so that the process pipe column and the submersible cable can be conveniently put into the oil well, and the submersible cable can be prevented from being scratched and damaged. After the screw pump is put into a fixed position in a well, a pressing load is applied through the pipe column, the shearing pin 7 is sheared off, and the clamping block 3 is propped and clamped on the wall of the casing, so that the rigid centralizing effect of the screw pump is realized, and the vibration generated when the screw pump works and the adverse effect of the elastic centralizer on the submersible cable which passes through the screw pump are effectively reduced.
Claims (4)
1. The utility model provides a cable oil pipe rigidity righting device which characterized in that: the device consists of an upper joint (1), a central pipe (2), a clamping block (3), a spring (4), a hoop (5), a centralizing body (6), a shearing pin (7), a guide pin (8), a connecting pipe (9), a sealing ring (10) and a lower joint (11); wherein top connection (1) and center tube (2) threaded connection, center tube (2) and guide pin (8) threaded connection, take over (9) cover and be connected through shear pin (7) on center tube (2), it is sealed to have sealing ring (10) between taking over (9) and center tube (2), take over (9) upper portion and right body (6) threaded connection, take over (9) lower part and lower clutch (11) threaded connection, fixture block (3) are fixed on right body (6) through spring (4), hoop (5).
2. A cabled tubing rigid centralizer as claimed in claim 1 wherein: the side surfaces of the upper joint (1), the centralizing body (6) and the connecting pipe (9) are provided with grooves (12) through which the submersible cables pass.
3. A cabled tubing rigid centralizer as claimed in claim 1 wherein: the central tube (2) can cut off the shear pin (7) under the action of downward-pressing axial load and slide downwards in the connecting tube (9), and the upper joint (1) can prop open the fixture block (3) to clamp the fixture block on an outer sleeve in the process; when the axial load is removed, the lifting central tube (2) can withdraw the clamping block (3) from the upper joint (1), shrink and reset, and is separated from the clamped sleeve.
4. A cabled tubing rigid centralizer as claimed in claim 1 wherein: the working surface of the clamping block (3) for clamping is smooth or provided with slip teeth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010618659.9A CN111608598A (en) | 2020-06-30 | 2020-06-30 | Cable-passing oil pipe rigid centering device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010618659.9A CN111608598A (en) | 2020-06-30 | 2020-06-30 | Cable-passing oil pipe rigid centering device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111608598A true CN111608598A (en) | 2020-09-01 |
Family
ID=72204992
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010618659.9A Pending CN111608598A (en) | 2020-06-30 | 2020-06-30 | Cable-passing oil pipe rigid centering device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111608598A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2434423Y (en) * | 2000-04-19 | 2001-06-13 | 李晶 | Clamping rotary oil pipe anchor |
| CN101135234A (en) * | 2006-08-31 | 2008-03-05 | 白霞 | Screw pump flow string trip preventer |
| CN201531234U (en) * | 2009-10-30 | 2010-07-21 | 中国石油化工股份有限公司胜利油田分公司采油工艺研究院 | Anchor of side-passing cable oil pipe |
| US20110303419A1 (en) * | 2010-06-15 | 2011-12-15 | Halliburton Energy Services, Inc. | Installation of lines in high temperature wellbore environments |
| CN202832269U (en) * | 2012-09-04 | 2013-03-27 | 中国石油天然气股份有限公司 | Special centralizer for electric submersible pump capable of passing through cable |
| CN202990953U (en) * | 2013-01-09 | 2013-06-12 | 中国石油天然气股份有限公司 | Screw pump blowout prevention mechanical anchor |
| CN103510879A (en) * | 2013-09-09 | 2014-01-15 | 中国石油天然气股份有限公司 | hydraulic centralizer of screw pump |
| CN108301800A (en) * | 2018-04-17 | 2018-07-20 | 长江大学 | A kind of submersible electric pump preventing from falling into well device |
| CN207813536U (en) * | 2018-02-05 | 2018-09-04 | 中国石油天然气股份有限公司 | Supporting slip for oil well screw pump oil production well in oil field |
-
2020
- 2020-06-30 CN CN202010618659.9A patent/CN111608598A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2434423Y (en) * | 2000-04-19 | 2001-06-13 | 李晶 | Clamping rotary oil pipe anchor |
| CN101135234A (en) * | 2006-08-31 | 2008-03-05 | 白霞 | Screw pump flow string trip preventer |
| CN201531234U (en) * | 2009-10-30 | 2010-07-21 | 中国石油化工股份有限公司胜利油田分公司采油工艺研究院 | Anchor of side-passing cable oil pipe |
| US20110303419A1 (en) * | 2010-06-15 | 2011-12-15 | Halliburton Energy Services, Inc. | Installation of lines in high temperature wellbore environments |
| CN202832269U (en) * | 2012-09-04 | 2013-03-27 | 中国石油天然气股份有限公司 | Special centralizer for electric submersible pump capable of passing through cable |
| CN202990953U (en) * | 2013-01-09 | 2013-06-12 | 中国石油天然气股份有限公司 | Screw pump blowout prevention mechanical anchor |
| CN103510879A (en) * | 2013-09-09 | 2014-01-15 | 中国石油天然气股份有限公司 | hydraulic centralizer of screw pump |
| CN207813536U (en) * | 2018-02-05 | 2018-09-04 | 中国石油天然气股份有限公司 | Supporting slip for oil well screw pump oil production well in oil field |
| CN108301800A (en) * | 2018-04-17 | 2018-07-20 | 长江大学 | A kind of submersible electric pump preventing from falling into well device |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200901 |