CN103470195A - High-temperature resisting and high-pressure resisting injecting and extracting integrated double-layer hollow sucker rod - Google Patents
High-temperature resisting and high-pressure resisting injecting and extracting integrated double-layer hollow sucker rod Download PDFInfo
- Publication number
- CN103470195A CN103470195A CN2013104598236A CN201310459823A CN103470195A CN 103470195 A CN103470195 A CN 103470195A CN 2013104598236 A CN2013104598236 A CN 2013104598236A CN 201310459823 A CN201310459823 A CN 201310459823A CN 103470195 A CN103470195 A CN 103470195A
- Authority
- CN
- China
- Prior art keywords
- sucker rod
- ring
- temperature
- resistant
- injecting
- 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
Images
Abstract
The invention relates to a high-temperature resisting and high-pressure resisting injecting and extracting integrated double-layer hollow sucker rod. In order to overcome the defects that the gas-injecting and oil-extracting two sets of tubular columns are required by the present steam injection oil extracting technology and the sealing effect cannot meet the requirement of a steam injection operation, an upper joint, a rod body and a lower joint of the hollow rod provided by the invention are fixedly connected in turn from up to down; a central pipe is located in the hollow rod; a space between an outer pipe and an inner pipe of the central pipe is hollow and annular; a metal sealing ring I is mounted in an annular slot at an upper end of a connecting thread of the lower joint; a metal sealing gasket is mounted on an upper end face of the connecting thread of the lower joint; and a metal sealing ring II is mounted between a lower end part of the inner pipe of the central pipe and a lower fixing sleeve. The high-temperature resisting and high-pressure resisting injecting and extracting integrated double-layer hollow sucker rod has the beneficial effects that the structure is reasonable; the metal sealing rings are adopted, so that the hollow sucker rod has high-temperature and high-pressure resisting properties and can meet the requirement of the steam injection oil extracting technology; the steam injection and oil extraction producing operation is finished by the next tubular column; and the technical blank of a super heavy oil steam-injecting oil-extracting integrated tubular column is filled up.
Description
Technical field
The present invention relates to a kind of vacuum double hollow rod, especially relate to a kind of high-temperature-resistant high-pressure-resistant notes and adopt integrated double layer hollow sucker rod, be specially adapted to the gas-injection oil-production operation of super thick oil filling steam well.
Background technology
Along with deepening continuously of oil development, super viscous crude and high solidifying oily exploitation ratio are increasing, at super viscous crude and the high solidifying oil steam injection technique that adopts, are exploited at present more.Adopt steam injection technique usually to need gas injection, exploit two cover process pipe strings, at first be lowered to gas injection tube column and carry out the steam injection operation, gas injection proposes pit shaft by gas injection tube column after finishing, and then is lowered to the pumping pipe string production operation of being recovered the oil.Due to injected vapor (steam) temperature, up to more than 300 ℃, existing sucker rod heatproof, withstand voltage properties all can't meet the needs of steam injection technique oil production technology.
Common sucker rod does not possess heat insulation function when injecting heat transfer medium, heat loss is fast, in order to address this problem, disclosed Chinese utility model patent on April 10th, 2013 " vacuum double hollow rod " (publication number CN202866683U), central tube is positioned at hollow stem, the inner tube of central tube is positioned at outer tube, between outer tube and inner tube, annular space is arranged, and the inward at both ends of outer tube tilts to be fixedly connected with inner tube; The inner tube upper end is fixedly mounted in the centre bore of mounting flange, and mounting flange is fixedly connected with the top connection internal thread of hollow stem; The lower end of inner tube is fixedly mounted in lower fixed cover endoporus, and lower fixed cover is fixedly mounted in the endoporus of lower contact; The upper surface of inner tube is higher than the upper surface of mounting flange, and the lower surface of inner tube is positioned at lower fixed cover endoporus middle part; The axial liquid opening is arranged on the cross section of mounting flange, lower fixed cover.Its beneficial effect is simple and reasonable, and good heat insulating reduces operating cost, effectively extends hollow rod application life.But the sealing ring that this vacuum double hollow rod is used is the General Purpose Rubber sealing ring, can't meet the HTHP needs of steam injection technique.
Summary of the invention
In order to overcome, existing steam process technology need to be used gas injection, two casing strings that recover the oil, and the vacuum double hollow rod can not meet the deficiency of high-temperature technology requirement, the invention provides a kind of high-temperature-resistant high-pressure-resistant notes and adopts integrated double layer hollow sucker rod.
The technical solution adopted for the present invention to solve the technical problems is: high-temperature-resistant high-pressure-resistant is annotated and is adopted integrated double layer hollow sucker rod, comprises hollow stem, central tube, and the top connection of hollow stem, the body of rod, lower contact from top to bottom are fixedly connected sequentially; Central tube is positioned at hollow stem, and the inner tube of central tube is positioned at outer tube, and the inward at both ends of outer tube tilts to be fixedly connected with inner tube; The inner tube upper end is fixedly mounted in the centre bore of mounting flange, and mounting flange is fixedly connected with the top connection of hollow stem; The lower end of inner tube is fixedly mounted in lower fixed cover endoporus, and lower fixed cover is fixedly mounted in the endoporus of lower contact; The upper surface of inner tube is higher than the upper surface of mounting flange; The axial liquid opening is arranged on the cross section of mounting flange, lower fixed cover.In the cannelure of lower contact connecting thread upper end, metal o-ring I is installed, the upper end surface of lower contact connecting thread is equipped with metallic gasket; Metal o-ring I is comprised of two semi-rings, and two semi-ring joints of metal o-ring I are inclined-plane.Between the inner tube bottom of central tube and lower fixed cover, metal o-ring II is installed.The material of metal o-ring I, metal o-ring II, metallic gasket is red copper.
The invention has the beneficial effects as follows, reasonable in design, the flexility that utilizes the red copper material to have makes the sucker rod junction have good sealing performance; Because the metal o-ring adopted has the high-temperature-resistant high-pressure-resistant performance, can meet the needs of steam injection technique; This tubing string can realize that lower one-trip string completes steam injection, oil recovery production operation simultaneously, has saved a lower tubular column time, has filled up super this technological gap of thick oil filling steam-assisted recovery integrated pipe column.
The accompanying drawing explanation
Fig. 1 is that high-temperature-resistant high-pressure-resistant notes of the present invention are adopted integrated double layer hollow sucker rod structural representation.
Fig. 2 is metal o-ring I schematic diagram in the present invention.
Fig. 3 is the left view of Fig. 2.
In figure: 1. descend fixed cover, 2. metal o-ring I, 3. lower contact, 4. central tube, the 5. body of rod, 6. top connection, 7. mounting flange, 8. metal o-ring II, 9. metallic gasket.
The specific embodiment
Below in conjunction with drawings and Examples, the invention will be further described.But those skilled in the art should know, the invention is not restricted to the listed specific embodiment, as long as spirit according to the invention all should be included in protection scope of the present invention.
Referring to accompanying drawing 1.High-temperature-resistant high-pressure-resistant of the present invention is annotated and is adopted integrated double layer hollow sucker rod, comprises hollow stem, central tube 4.
The top connection 6 of hollow stem, the body of rod 5, lower contact 3 from top to bottom are fixedly connected sequentially.In the cannelure of lower contact 3 connecting thread upper ends, metal o-ring I2 is installed, metal o-ring I2 is comprised of two semi-rings, and two semi-ring joints are inclined-plane docking (seeing accompanying drawing 2,3).The upper end surface of lower contact 3 connecting threads is equipped with metallic gasket 9.
Central tube 4 is positioned at hollow stem, and the inner tube of central tube is positioned at outer tube, and the inward at both ends of outer tube tilts to be fixedly connected with inner tube, makes the annular space that forms sealing between outer tube and inner tube, in annular space, is vacuum.The inner tube upper end is fixedly mounted in the centre bore of mounting flange 7, and mounting flange 7 is fixedly connected with the top connection 6 of hollow stem.The lower end of inner tube is fixedly mounted in lower fixed cover 1 endoporus, and lower fixed cover 1 is fixedly mounted in the endoporus of lower contact 3; The upper surface of inner tube is higher than the upper surface of mounting flange 7; The axial liquid opening is arranged on the cross section of mounting flange 7, lower fixed cover 1.Hollow stem adopts seamless steel pipe, 500 ℃ of high temperature resistant degree, withstand voltage 45MPa; Central tube 4 adopts gapless stainless steel tube, high temperature resistant 600 ℃, withstand voltage 25MPa.Between the inner tube lower end head of central tube 4 and the endoporus of lower fixed cover 1, metal o-ring II8 is installed.
In order to guarantee that metal o-ring I2, metal o-ring II8, metallic gasket 9 have good sealing performance, the material selection of metal o-ring I2, metal o-ring II8, metallic gasket 9 has the red copper of good plasticity and ductility usually.
When application high-temperature-resistant high-pressure-resistant notes of the present invention are adopted integrated double layer hollow sucker rod, sucker rod connects to form to annotate successively adopts the integral process sucker rod.After connecting successively, the central tube inner tube of top sucker rod and the metal o-ring II8 between lower fixed cover are tightly withstood in the central tube upper end of following sucker rod, following sucker rod top connection is with after the lower contact of top sucker rod is fixedly connected with, and the distortion under extruding of metal o-ring I2, metal o-ring II8, metallic gasket 9 forms sealing.
High-temperature-resistant high-pressure-resistant notes of the present invention are adopted to integrated double layer hollow sucker rod and carried out laboratory experiment, purpose is to detect pressure-bearing and the sealing performance of the present invention under 350 ℃ of hot conditions, result shows: under temperature 350-351 ℃, pressure 20MPa condition, voltage stabilizing 60 minutes, pressure variation≤0.3MPa; Under temperature 347-351 ℃, pressure 20MPa condition, voltage stabilizing 90 minutes, pressure variation<0.4MPa; Under temperature 348-351 ℃, pressure 20MPa condition, voltage stabilizing 120 minutes, pressure variation≤0.3MPa.
Site test results shows, application the present invention carries out the steam injection technique super viscous crude of exploitation and high solidifying oil, existing hollow stem, the poor deficiency of the high pressure resistant resistance to elevated temperatures of two hollow stem have been overcome, high desnity metal sealing ring, sealing mat can long-term works under high temperature, high pressure, solved because easily breaking under high temperature that rubber seal exists, high pressure, carbonization, sticky splitting, cause hollow stem and a two hollow stem seepage difficult problem, can effectively solve high-temperature steam and the crude oil lifting problem annotated.Because the present invention has the high-temperature-resistant high-pressure-resistant performance, can realize that lower one-trip string completes steam injection and oil extraction operation simultaneously, save the time of a lower tubular column, effectively reduce cost of winning, improve usefulness.
It should be noted that above-described embodiment is example and unrestricted the present invention, those skilled in the art can design a lot of alternate embodiments and not break away from the claim scope of this patent.
Claims (4)
1. a high-temperature-resistant high-pressure-resistant is annotated and is adopted integrated double layer hollow sucker rod, comprises hollow stem, central tube, and the top connection of hollow stem, the body of rod, lower contact from top to bottom are fixedly connected sequentially; Central tube is positioned at hollow stem, and the inner tube of central tube is positioned at outer tube, and the inward at both ends of outer tube tilts to be fixedly connected with inner tube; The inner tube upper end is fixedly mounted in the centre bore of mounting flange, and mounting flange is fixedly connected with the top connection of hollow stem; The lower end of inner tube is fixedly mounted in lower fixed cover endoporus, and lower fixed cover is fixedly mounted in the endoporus of lower contact; The upper surface of inner tube is higher than the upper surface of mounting flange; The axial liquid opening is arranged on the cross section of mounting flange, lower fixed cover, it is characterized in that:
In the cannelure of described lower contact (3) connecting thread upper end, metal o-ring I (2) is installed, the upper end surface of lower contact (3) connecting thread is equipped with metallic gasket (9);
Between the inner tube bottom of described central tube (4) and lower fixed cover (1), metal o-ring II (8) is installed.
2. high-temperature-resistant high-pressure-resistant is annotated and is adopted integrated double layer hollow sucker rod according to claim 1, and it is characterized in that: the material of described metal o-ring I (2), metal o-ring II (8), metallic gasket (9) is red copper.
3. high-temperature-resistant high-pressure-resistant is annotated and is adopted integrated double layer hollow sucker rod according to claim 2, and it is characterized in that: described metal o-ring I (2) is comprised of two semi-rings.
4. high-temperature-resistant high-pressure-resistant is annotated and is adopted integrated double layer hollow sucker rod according to claim 3, and it is characterized in that: two semi-ring joints of described metal o-ring I (2) are inclined-plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013104598236A CN103470195A (en) | 2013-10-08 | 2013-10-08 | High-temperature resisting and high-pressure resisting injecting and extracting integrated double-layer hollow sucker rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013104598236A CN103470195A (en) | 2013-10-08 | 2013-10-08 | High-temperature resisting and high-pressure resisting injecting and extracting integrated double-layer hollow sucker rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103470195A true CN103470195A (en) | 2013-12-25 |
Family
ID=49795220
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013104598236A Pending CN103470195A (en) | 2013-10-08 | 2013-10-08 | High-temperature resisting and high-pressure resisting injecting and extracting integrated double-layer hollow sucker rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103470195A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105114001A (en) * | 2015-08-26 | 2015-12-02 | 葫芦岛龙源采油配套设备有限公司 | Energy-saving and thermal-insulation device of hollow sucker rod and manufacturing method of energy-saving and thermal-insulation device |
| CN106194057A (en) * | 2014-12-02 | 2016-12-07 | 成都宸鸿科技有限公司 | A kind of Multifunctional drill rod |
| CN106194058A (en) * | 2014-12-02 | 2016-12-07 | 成都宸鸿科技有限公司 | A kind of dust suction drilling rod |
| CN109138855A (en) * | 2018-10-23 | 2019-01-04 | 董刚 | Extract underground heat hollow rod |
| CN110259419A (en) * | 2019-07-18 | 2019-09-20 | 中海石油(中国)有限公司湛江分公司 | Concentric screen and attaching method thereof |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87210737U (en) * | 1987-11-13 | 1988-10-05 | 辽河石油勘探局钻井一公司 | Step-support type casinghead |
| US4815538A (en) * | 1988-06-16 | 1989-03-28 | The Cavins Corporation | Wash tool for well having perforated casing |
| CN2099832U (en) * | 1991-05-19 | 1992-03-25 | 吉林市远红外设备厂 | Vertically inserted type hollow oil-pumping rod |
| US5887660A (en) * | 1996-03-01 | 1999-03-30 | Smith International, Inc | Liner packer assembly and method |
| CN201581817U (en) * | 2009-12-22 | 2010-09-15 | 中国石油化工股份有限公司 | Injection-exploring integral special hollow rod coupling |
| CN201827373U (en) * | 2009-09-17 | 2011-05-11 | 诸暨市铭洲机械有限公司 | Trisection type multi-groove annular floating seal ring |
| CN202187737U (en) * | 2011-08-22 | 2012-04-11 | 中国石油集团西部钻探工程有限公司 | High-pressure temperature resistant ventilation nozzle for well control |
| CN202545818U (en) * | 2011-11-10 | 2012-11-21 | 南京银茂铅锌矿业有限公司 | Shaft seal seat sealing device for paste filling double shaft mixer |
| CN202866683U (en) * | 2012-10-29 | 2013-04-10 | 刘铁 | Vacuum double-layer hollow oil pumping rod |
| CN103161421A (en) * | 2013-03-18 | 2013-06-19 | 张学海 | Oil pumping polished rod lubrication sealing device |
-
2013
- 2013-10-08 CN CN2013104598236A patent/CN103470195A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87210737U (en) * | 1987-11-13 | 1988-10-05 | 辽河石油勘探局钻井一公司 | Step-support type casinghead |
| US4815538A (en) * | 1988-06-16 | 1989-03-28 | The Cavins Corporation | Wash tool for well having perforated casing |
| CN2099832U (en) * | 1991-05-19 | 1992-03-25 | 吉林市远红外设备厂 | Vertically inserted type hollow oil-pumping rod |
| US5887660A (en) * | 1996-03-01 | 1999-03-30 | Smith International, Inc | Liner packer assembly and method |
| CN201827373U (en) * | 2009-09-17 | 2011-05-11 | 诸暨市铭洲机械有限公司 | Trisection type multi-groove annular floating seal ring |
| CN201581817U (en) * | 2009-12-22 | 2010-09-15 | 中国石油化工股份有限公司 | Injection-exploring integral special hollow rod coupling |
| CN202187737U (en) * | 2011-08-22 | 2012-04-11 | 中国石油集团西部钻探工程有限公司 | High-pressure temperature resistant ventilation nozzle for well control |
| CN202545818U (en) * | 2011-11-10 | 2012-11-21 | 南京银茂铅锌矿业有限公司 | Shaft seal seat sealing device for paste filling double shaft mixer |
| CN202866683U (en) * | 2012-10-29 | 2013-04-10 | 刘铁 | Vacuum double-layer hollow oil pumping rod |
| CN103161421A (en) * | 2013-03-18 | 2013-06-19 | 张学海 | Oil pumping polished rod lubrication sealing device |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106194057A (en) * | 2014-12-02 | 2016-12-07 | 成都宸鸿科技有限公司 | A kind of Multifunctional drill rod |
| CN106194058A (en) * | 2014-12-02 | 2016-12-07 | 成都宸鸿科技有限公司 | A kind of dust suction drilling rod |
| CN105114001A (en) * | 2015-08-26 | 2015-12-02 | 葫芦岛龙源采油配套设备有限公司 | Energy-saving and thermal-insulation device of hollow sucker rod and manufacturing method of energy-saving and thermal-insulation device |
| CN109138855A (en) * | 2018-10-23 | 2019-01-04 | 董刚 | Extract underground heat hollow rod |
| CN110259419A (en) * | 2019-07-18 | 2019-09-20 | 中海石油(中国)有限公司湛江分公司 | Concentric screen and attaching method thereof |
| CN110259419B (en) * | 2019-07-18 | 2021-09-28 | 中海石油(中国)有限公司湛江分公司 | Double-layer sieve tube |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103470195A (en) | High-temperature resisting and high-pressure resisting injecting and extracting integrated double-layer hollow sucker rod | |
| CN201972682U (en) | Gas-injection oil-exploitation tubular column adopting packer technology for horizontal well | |
| CN102644442A (en) | Ultra-viscous crude oil injection-production integrated technique tubular pile | |
| CN104213888A (en) | Down-hole steam injection string of thick-oil thermal production well | |
| CN107288583B (en) | Series-type variable pitch downhole fluid electric heater | |
| CN104405355A (en) | Injection-production tubular column of horizontal well | |
| CN204371211U (en) | A kind of packer sealing structure based on the sealing of metal-rubber cylinder | |
| CN203008883U (en) | Steam injection oil production technique pipe column | |
| CN103452496B (en) | Integral type of adopting thick oil thermal extraction note automatically switches and produces joint | |
| CN101709637A (en) | Air lifting device for thermal recovery | |
| CN205532511U (en) | Pumping unit of oil well | |
| CN205025420U (en) | Combination effect layering vapour drives packer | |
| CN203742574U (en) | Heat insulation oil casing well completion pipe string | |
| CN203285383U (en) | Small-diameter double-sealing layering steam injection packer | |
| CN206299367U (en) | A kind of metal sealing packer | |
| CN103174398B (en) | A kind of drillable press-fracturing bridge plug | |
| CN202970610U (en) | Oil and gas well underground casing pipe packer rubber sleeve | |
| CN204899838U (en) | Compound bridging plug of ball cage | |
| CN209761409U (en) | Micro-reducing thermal compensator for thermal production well | |
| CN202125274U (en) | External packer of segmental well completion pipe of thermal production horizontal well | |
| CN210033313U (en) | Sealing ring and oil pumping pipe inserting pipe system | |
| CN201460760U (en) | High-temperature high-pressure sealing adapter for oil gas exploitation drill stem | |
| CN202578623U (en) | Expansion and compression type packer device | |
| CN204804802U (en) | Vapour accuse liquid tubular column is annotated to shutoff formula horizontal well | |
| CN201581882U (en) | Steam injection packoff device for thick oil thermal production well |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | 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 |
Application publication date: 20131225 |
|
| RJ01 | Rejection of invention patent application after publication |