CN105134093A - Inner circulation and insulation oil sucking pipe - Google Patents
Inner circulation and insulation oil sucking pipe Download PDFInfo
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- CN105134093A CN105134093A CN201510544676.1A CN201510544676A CN105134093A CN 105134093 A CN105134093 A CN 105134093A CN 201510544676 A CN201510544676 A CN 201510544676A CN 105134093 A CN105134093 A CN 105134093A
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- tube
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Abstract
The invention relates to an inner circulation and insulation oil sucking pipe (or sucker rod). The inner circulation and insulation oil sucking pipe comprises a hollow oil sucking pipe body with connectors and a coupling and an insulation pipe installed in the hollow oil sucking pipe body, and a ring cavity is arranged between the hollow oil sucking pipe body and the insulation pipe; the middle of the insulation pipe is of a double-layer insulation structure, and the two ends of the insulation pipe are provided with the centralizing connector and the positioning connector respectively; the double-layer insulation structure of the insulation pipe is formed by reserving a ring gap between an inner pipe and an outer pipe; the centralizing connector is axially provided with a flow channel slot, an inner hole of the centralizing connector is matched with the extension section of the inner pipe to seal the inner pipe, and the outer diameter of the centralizing connector is slidably matched with an inner hole of the hollow oil sucking pipe body; the positioning connector is axially provided with a flow channel slot and connected with the outer pipe in a sealing mode, an inner hole of the positioning connector is matched with the extension section of the inner pipe in a slidably sealing mode, and the inner side of the positioning connector is matched with inner inverted angle of the coupling of the hollow oil sucking pipe in a limited mode and connected with an inner thread of the coupling in a fastening mode through a lock nut. The inner circulation and insulation oil sucking pipe is reasonable in structure, good in insulation effect and long in service life, electric charge of a heavy oil well can be reduced by 70% through indoor experiments and on-site applications, and the defects existing in the prior art are well overcome.
Description
Technical field
The present invention relates to technical field of oil extraction equipment, particularly relate to a kind of Inner eycle for viscosity reduction, Wax proofing in oilfield exploitation insulation oil pick-up tube or sucker rod.
Background technology
In thickened oil recovery process, due to the comparatively large and easy wax deposition of recovery process Crude Oil viscosity, greatly affect crude oil yield.Current hollow oil pick-up tube (bar) heating technique has plug-in type and continuous stainless steel tube, and two kinds connect structure and all there is shortcoming: (1) plug-in type exists leak source, affects heat insulation effect.(2) continuous stainless steel tube poor thermal insulation property.
Chinese patent discloses one " oil extraction in oil field Special vacuum heat preserving circle tube " (Authorization Notice No. CN102704867B).Due to this patent, there are the following problems, causes it to be difficult to carry out.
(1) this patent figure can only adopt Type of Welding to connect due to the male joint at interior pipe, outer tube and two ends, box thread joint, and between inner and outer pipes, have the larger temperature difference, its deflection is different, weld seam is thrown off, and can not realize vacuumizing effect.
(2) vacuum heat-preserving tube of this patent is when installing with hollow outer tube, vacuum heat-preserving tube penetrates from the male thread end of hollow outer tube, then with nut, vacuum heat-preserving tube is fastened in hollow outer tube, make the shoulder close contact in boss and hollow outer tube male thread end inside the male joint in vacuum heat-preserving tube, shoulder and nut end face close contact in hollow outer tube box thread.When under Inner eycle vacuum tube in well time, hollow outer tube gravitate stretch, vacuum heat-preserving tube also causes weld cracking thereupon stretching, vacuum heat-preserving tube failure.
(3) vacuum tube at high temperature generally can only maintain 3-4 month application life, can not meet the needs of oil well long-term production.
Summary of the invention
The object of the invention is the defect for above technology, provide a kind of Extendible Inner eycle rational in infrastructure, high insulating effect, long service life to be incubated oil pick-up tube.
Technical scheme of the present invention:
A kind of Inner eycle insulation oil pick-up tube, comprises the hollow oil pick-up tube body with joint, box cupling, and is arranged on the intrinsic insulating tube of hollow oil pick-up tube, be provided with annular space chamber therebetween; Wherein: be double-decked insulation in the middle of insulating tube, two ends are respectively equipped with righting joint and landing nipple; The double-layer heat insulation hermetically-sealed construction of insulating tube leaves annular space between interior pipe and outer tube; Righting joint is provided with extension diameter section, and this extension diameter section is axially arranged with flow path groove, flow path groove and the annular space chamber between hollow oil pick-up tube body and insulating tube through; Righting joint and inner and outer pipe all adopt fixed seal connection, and extension diameter section and hollow oil pick-up tube endoporus are slidably matched; Righting joint and interior pipe extension form grafting by seal and are sealed and matched; Landing nipple and outer tube fixed seal connection, landing nipple inwall arranges seal and forms slipper seal with interior pipe extension and coordinates; Landing nipple is provided with overstriking section, this overstriking section forms spacing cooperation with the inner chamfering of hollow oil-well tubing collar, overstriking section is provided with the through hole through with insulating tube annular space, through hole is sealed by plug, overstriking section is also provided with shaft orientation flowing channel groove, and the annular space chamber of flow path groove and hollow oil pick-up tube endoporus and insulating tube is through; This overstriking section outer end coordinates with pressure cap is spacing, and pressure cap is connected fastening with coupling inner thread.
Such scheme comprises further: fill insulant material and the agent of suction hydrogen in the annular space left between pipe and outer tube, and is full of inert gas.
Vacuum is set in the annular space that also can leave between interior pipe and outer tube.
The internal thread of described hollow oil pick-up tube body female joint section is longer than standard oil pick-up tube internal thread; The outer tube of described insulating tube all adopts with righting joint and landing nipple and welds, interior pipe one end of insulating tube and righting weld, and the other end is by landing nipple endoporus and extend certain length.
Insulation oil pick-up tube of the present invention, owing to have employed technique scheme, thus has following characteristics:
One is that the two ends of insulating tube are respectively equipped with righting joint and landing nipple, centre is double-decked insulation, the interior Guan Shangshe heat insulating material of insulating tube, full space do not filled by heat insulating material, make it there is certain annular space with the outer tube of insulating tube, annular space is added with inhales hydrogen agent be full of inert gas, extends insulating tube application life.
Two is that the two ends coupler bore of insulating tube is equipped with sealing ring, and extension diameter section and the landing nipple overstriking section cylindrical of righting joint open flow path groove, and righting joint slotted section and hollow rod endoporus are formed and be slidably matched, and makes end placed in the middle, is convenient to operation and installs.
Three is that the outer tube of insulating tube all adopts with righting joint and landing nipple and welds, interior pipe one end of insulating tube and righting weld, the other end passes landing nipple endoporus and stretches out certain length outside landing nipple, formed with landing nipple endoporus sealing ring and seal, make medium can not enter insulating tube annular space, and affecting heat insulation effect, extension inserts righting coupler bore when deployed, is formed seal with endoporus sealing ring.Do not produce the impact of stress by the inner and outer pipes temperature difference because pipe one end in insulating tube is in free state, weld seam is reliable.When insulating tube is arranged in hollow oil pick-up tube, coupling inner thread end is compressed by pressure cap, and male end is in free state, and when stretching by gravity in the hollow stem course of work, insulating tube is not subject to pulling force, reliable operation.
Four is that the internal thread of hollow rod is longer than standard hollow rod internal thread, is convenient to install pressure cap.
The present invention is rational in infrastructure, high insulating effect, long service life, through laboratory test and field test results good, well solve the defect existed in prior art.
Accompanying drawing explanation
Fig. 1 is the structural representation of Inner eycle insulation oil pick-up tube;
Fig. 2 is the structural representation of insulating tube 3 in Fig. 1;
Fig. 3 is the structural representation of Fig. 1 hollow core oil pick-up tube 2;
In figure: 1, outside seal (circle), 2, hollow oil pick-up tube body, 3, insulating tube, 4, pressure cap, 5, righting joint, 6, seal (circle), 7, outer tube, 8, heat insulating material, 9, interior pipe, 10, inhale hydrogen agent, 11, plug, 12, seal (circle), 13, landing nipple, 14, internal thread.
Detailed description of the invention
With reference to accompanying drawing 1,2 and 3, a kind of Inner eycle insulation oil pick-up tube, comprises the hollow oil pick-up tube body 2 with joint, box cupling, and is arranged on the insulating tube 3 in hollow oil pick-up tube body 2, be provided with annular space chamber therebetween; Wherein: be double-decked insulation in the middle of insulating tube 3, two ends are respectively equipped with righting joint 5 and landing nipple 13; The double-layer heat insulation hermetically-sealed construction of insulating tube 3 leaves annular space between interior pipe 9 and outer tube 7; Righting joint 5 is provided with extension diameter section, and this extension diameter section is axially arranged with flow path groove, flow path groove and the annular space chamber between hollow oil pick-up tube body 2 and insulating tube 3 through; Righting joint 5 and inner and outer pipe all adopt fixed seal connection, and extension diameter section and hollow oil pick-up tube body 2 endoporus are slidably matched; Righting joint 5 and interior pipe extension form grafting by seal 6 and are sealed and matched; Landing nipple 13 and outer tube 7 fixed seal connection, landing nipple 13 endoporus arranges seal 12 and forms slipper seal with interior pipe 9 extension and coordinates; Landing nipple 13 is provided with overstriking section, this overstriking section coordinates with hollow oil pick-up tube body 2 box cupling Inner Constitution is spacing, overstriking section is provided with the through hole through with insulating tube annular space, through hole is sealed by plug 11, overstriking section is also provided with shaft orientation flowing channel groove, and the annular space chamber of flow path groove and hollow oil pick-up tube body 2 and insulating tube 3 is through; This overstriking section outer end coordinates with pressure cap 4 is spacing, and pressure cap 4 is connected with coupling inner thread and coordinates.
Above-described embodiment comprises further: fill insulant material 7 and inhale hydrogen agent 10 in the annular space left between pipe 9 and outer tube 7, and is full of inert gas.
Vacuum is set in the annular space that also can leave between interior pipe and outer tube.
The internal thread 14 of described hollow oil pick-up tube body 2 female joint section is longer than standard oil pick-up tube internal thread; The outer tube 7 of insulating tube all adopts with righting joint 5 and landing nipple 13 and welds, and interior pipe 9 one end of insulating tube is welded with righting joint 5.
Design feature of the present invention is embodied in:
(1) righting joint 5 and landing nipple 13 are established in insulating tube two ends, coupler bore establishes inner seal ring 6 and sealing ring 12, the two ends of outer tube 7 are welded with righting joint 5 and landing nipple 13 respectively, and interior pipe 9 one end is welded with righting joint 5, and the other end passes landing nipple 13 and stretches out outer end.
(2) interior pipe 9 is formed with landing nipple inner seal ring 12 and seals, and prevents medium from entering the annular space between inner and outer pipes and affecting heat-insulating property.
(3) one end of interior pipe 9 is welded with righting joint 5, and the other end is in free state, when inner and outer pipes stretches because of the temperature difference, and not affected by force drawing crack weld seam.
(4) external diameter of interior pipe 9 establishes heat insulating material 8, and heat insulating material 8 does not fill up annular space between inner and outer pipes, and annular space adds a certain amount of suction hydrogen agent 10 and is full of inert gas, to increase heat-insulating property, increases the service life.
(5) extension diameter section of righting joint 5 opens flow path groove, and it is formed with hollow oil pick-up tube tip side 2 endoporus and coordinates, and righting joint 5 just can be placed in the middle, and when mounted, pipe external part inserts and do not damage inner seal ring 6.
(6) external diameter of landing nipple 13 opens flow path groove, and outer end coordinates with pressure cap 4 and is fixed in hollow oil pick-up tube 2 by insulating tube.The muscle of flow path groove establishes through hole, and is sealed by plug 11.
(7) coupling inner thread 14 of hollow oil pick-up tube 2 is for lengthening screw thread, is convenient to install pressure cap 4.
(8) insulating tube 2 loads from hollow oil-well tubing collar end, compresses with pressure cap 4, and righting joint 5 is in free state, and when hollow oil pick-up tube 2 stretches by gravity, insulating tube, not by pulling force, makes weld seam seal reliable.
Claims (4)
1. an Inner eycle insulation oil pick-up tube, comprises the hollow oil pick-up tube body with joint, box cupling, and is arranged on the intrinsic insulating tube of hollow oil pick-up tube, be provided with annular space chamber therebetween; It is characterized in that: be double-decked insulation in the middle of insulating tube, two ends are respectively equipped with righting joint and landing nipple; The double-layer heat insulation hermetically-sealed construction of insulating tube leaves annular space between interior pipe and outer tube; Righting coupler bore establishes sealing ring, and righting joint external diameter is provided with extension diameter section, and this extension diameter section is axially arranged with flow path groove, flow path groove and the annular space chamber between hollow oil pick-up tube endoporus and insulating tube through; Righting joint and inner and outer pipe all adopt fixed seal connection, and righting joint extension diameter section and hollow oil pick-up tube endoporus are slidably matched; Righting joint and interior pipe extension form grafting by seal and are sealed and matched; Landing nipple and outer tube fixed seal connection, landing nipple inwall arranges seal and forms slipper seal with interior pipe extension and coordinates; Landing nipple is provided with overstriking section, this overstriking section coordinates with the grafting of hollow oil-well tubing collar Inner Constitution is spacing, overstriking section is provided with the through hole through with insulating tube annular space, through hole is sealed by plug, overstriking section is also provided with shaft orientation flowing channel groove, and the annular space chamber of flow path groove and hollow oil pick-up tube endoporus and insulating tube is through; This overstriking section outer end coordinates with pressure cap is spacing, and pressure cap is connected with hollow oil-well tubing collar inner thread and coordinates.
2. Inner eycle according to claim 1 insulation oil pick-up tube, is characterized in that: fill insulant material and inhale hydrogen agent in the annular space left between interior pipe and outer tube, and is full of inert gas.
3. Inner eycle insulation oil pick-up tube according to claim 1, is characterized in that: be vacuum in the annular space left between interior pipe and outer tube.
4. the Inner eycle insulation oil pick-up tube according to claim 1 or 2,3, is characterized in that: the internal thread of the body female joint section of described hollow oil pick-up tube is longer than standard oil pick-up tube internal thread; The outer tube of described insulating tube all adopts with righting joint and landing nipple and welds, interior pipe one end of insulating tube and righting weld.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510544676.1A CN105134093B (en) | 2015-08-31 | 2015-08-31 | Interior circulation is incubated oil pick-up tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510544676.1A CN105134093B (en) | 2015-08-31 | 2015-08-31 | Interior circulation is incubated oil pick-up tube |
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| Publication Number | Publication Date |
|---|---|
| CN105134093A true CN105134093A (en) | 2015-12-09 |
| CN105134093B CN105134093B (en) | 2017-08-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510544676.1A Active CN105134093B (en) | 2015-08-31 | 2015-08-31 | Interior circulation is incubated oil pick-up tube |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113236142A (en) * | 2021-03-03 | 2021-08-10 | 沧州润涛石油设备有限公司 | Double-layer vacuum insulation pipe, sucker rod and assembly process |
| CN114382435A (en) * | 2020-10-21 | 2022-04-22 | 中国海洋石油集团有限公司 | Hot washing pipe column of internal circulation heat preservation pipe of offshore oilfield and use method of hot washing pipe column |
Citations (7)
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|---|---|---|---|---|
| US4145034A (en) * | 1978-03-16 | 1979-03-20 | Hughes Tool Company | Heat shield for a drill string shock absorbing apparatus |
| CN201428388Y (en) * | 2009-06-18 | 2010-03-24 | 山东创佳石油机械制造有限公司 | Vacuumized continuous tube |
| CN101942971A (en) * | 2010-09-04 | 2011-01-12 | 李永祥 | Elastic expansion device |
| CN102704867A (en) * | 2012-06-08 | 2012-10-03 | 山东创佳石油机械制造有限公司 | Vacuum heat-preservation circulating pipe special for oil production of oilfield |
| KR20140069500A (en) * | 2012-11-29 | 2014-06-10 | 대우조선해양 주식회사 | Apparatus for avoiding collision of risers and riser having the same |
| CN204371114U (en) * | 2014-12-22 | 2015-06-03 | 中船勘察设计研究院有限公司 | Floating sleeve pipe |
| CN204941369U (en) * | 2015-08-31 | 2016-01-06 | 东营新佳环保技术开发有限公司 | Inner eycle insulation oil pick-up tube |
-
2015
- 2015-08-31 CN CN201510544676.1A patent/CN105134093B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4145034A (en) * | 1978-03-16 | 1979-03-20 | Hughes Tool Company | Heat shield for a drill string shock absorbing apparatus |
| CN201428388Y (en) * | 2009-06-18 | 2010-03-24 | 山东创佳石油机械制造有限公司 | Vacuumized continuous tube |
| CN101942971A (en) * | 2010-09-04 | 2011-01-12 | 李永祥 | Elastic expansion device |
| CN102704867A (en) * | 2012-06-08 | 2012-10-03 | 山东创佳石油机械制造有限公司 | Vacuum heat-preservation circulating pipe special for oil production of oilfield |
| KR20140069500A (en) * | 2012-11-29 | 2014-06-10 | 대우조선해양 주식회사 | Apparatus for avoiding collision of risers and riser having the same |
| CN204371114U (en) * | 2014-12-22 | 2015-06-03 | 中船勘察设计研究院有限公司 | Floating sleeve pipe |
| CN204941369U (en) * | 2015-08-31 | 2016-01-06 | 东营新佳环保技术开发有限公司 | Inner eycle insulation oil pick-up tube |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114382435A (en) * | 2020-10-21 | 2022-04-22 | 中国海洋石油集团有限公司 | Hot washing pipe column of internal circulation heat preservation pipe of offshore oilfield and use method of hot washing pipe column |
| CN113236142A (en) * | 2021-03-03 | 2021-08-10 | 沧州润涛石油设备有限公司 | Double-layer vacuum insulation pipe, sucker rod and assembly process |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105134093B (en) | 2017-08-29 |
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Effective date of registration: 20190522 Address after: 257091 Dongying District Shengli Economic Development Zone, Dongying City, Shandong Province Co-patentee after: DONGYING XINJIA ENVIRONMENTAL TECHNOLOGY DEVELOPMENT CO., LTD. Patentee after: Shandong Heng Chi Petroleum Equipment Co., Ltd. Address before: 257 000 Xishou, Weifang Road, Dongying City, Shandong Province Patentee before: DONGYING XINJIA ENVIRONMENTAL TECHNOLOGY DEVELOPMENT CO., LTD. |
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Effective date of registration: 20190805 Address after: 257091 East of West Fourth Road, Niuzhuang Town, Dongying District, Shandong Province (No. 384 Chuangyou Road, Dongying Oilfield Fusion Industrial Park) Patentee after: DONGYING XINJIA ENVIRONMENTAL TECHNOLOGY DEVELOPMENT CO., LTD. Address before: 257091 Dongying District Shengli Economic Development Zone, Dongying City, Shandong Province Co-patentee before: DONGYING XINJIA ENVIRONMENTAL TECHNOLOGY DEVELOPMENT CO., LTD. Patentee before: Shandong Heng Chi Petroleum Equipment Co., Ltd. |
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| TR01 | Transfer of patent right |