CN106014269B - A kind of oil well heat-insulation and heat-preservation abrasionproof oil pipe - Google Patents
A kind of oil well heat-insulation and heat-preservation abrasionproof oil pipe Download PDFInfo
- Publication number
- CN106014269B CN106014269B CN201610255875.5A CN201610255875A CN106014269B CN 106014269 B CN106014269 B CN 106014269B CN 201610255875 A CN201610255875 A CN 201610255875A CN 106014269 B CN106014269 B CN 106014269B
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- China
- Prior art keywords
- 35crmo
- thermal insulation
- insulation layer
- heat
- oil
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Classifications
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- 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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L9/00—Rigid pipes
- F16L9/18—Double-walled pipes; Multi-channel pipes or pipe assemblies
Abstract
Oil well is applied to the oil well of more than 75 DEG C of reservoir temperature, raising well mouth of oil well temperature with heat-insulation and heat-preservation abrasionproof oil pipe.It is characterized in that：Oil well is made of with heat-insulation and heat-preservation abrasionproof oil pipe plain tubing, 35CrMo inner tubes, thermal insulation layer, 35CrMo sealing shrouds, tetrafluoro gum cover, tubing coupling.Effect is：When being applied to the oil well of more than 75 DEG C of reservoir temperature, wellhead temperature improves more than 15.5 DEG C；And oil well bar eccentric wear and corrosion and scaling are prevented, oil well pump detection period averagely extends more than 1.2 times.
Description
Technical field
The present invention relates to technical field of oil production engineering, more particularly to a kind of oil well heat-insulation and heat-preservation abrasionproof oil pipe.For adopting
Well mouth of oil well temperature is improved during oil.
Background technology
Usually produced in oilfield process using universal oil pipe, the crude oil flowed out from oil reservoir passes through oil well pump quilt
During giving rise to ground, substantial amounts of heat is lost in stratum by oil jacket annular space, casing, cement sheath, one side crude oil
Temperature in the wellbore causes oil well paraffinication less than wax deposition point, and the mobility in another aspect crude oil well well letter is deteriorated, and increase is taken out
Oil machine load, energy consumption increase；Meanwhile because Wellhead crue oil temperature is low, heat tracing or water mixing is needed to convey during oil-collecting；Moreover,
With increasing for inclined shaft quantity, friction phenomenon is serious；Latter period of oilfield development, High water cut cause oil well corrosion and scaling, have impact on oil
The normal production run of well.
104533345 A of Chinese patent CN are disclosed and are wrapped up in insulated tubing outside a kind of wear-and corrosion-resistant, by preventing in oil pipe, oil pipe
The outer corrosion protective covering composition of the outer thermal insulation layer of rotten wearing layer, oil pipe, thermal insulation layer.A fixed embedded inner tube in the oil pipe；
The interlude outer wall of the oil pipe equably wraps up one layer of outer thermal insulation layer, and one layer of outer corrosion protective covering is wrapped up in outside thermal insulation layer outer wall；
The semicircle thermal insulation protection pipe of two docking is fixed in connection box cupling down operation section and box cupling the outer wall installation of the oil pipe
Set.Crude oil can be effectively reduced from shaft bottom to flow to the loss of well head process Crude Oil own temperature and improve crude oil in the wellbore
Fluidised form.Solve tubing string rod and tube partial-wear, anti-corrosion, fouling, wax deposition, the outer anti-corrosion of oil pipe in oil pipe, reduce between rod-pumped well rod tube
Frictional resistance, be finally reached energy-saving and emission-reduction, reduce rod tube damage, reduce underground work workload, substantially reduce oil exploitation
Cost.
Pay sub- honor et al. and be published in the 5th phase in 2015《Petroleum and petrochemical industry is energy saving》On " wrap up in outside oil well liner oil pipe experiment into
The Energy Saving Inspiration of a work(" text is pointed out, to realize the Paraffin Removal of oil well with energy-saving, using wrapping up in oil pipe outside liner in crude oil on a large scale
Heat scatters and disappears small principle during rising, and improves the fluidised form of crude oil in the wellbore, removes oil well cleanup, dosing from, and may realize
Oil well monotube gathering is defeated.5 oral examinations test well mouth of oil well temperature-averaging and improve 13.5 DEG C, and pumping unit hanging point peak load declines 3.5kN, most
Smaller load rises 1.3kN, and economize on electricity average day 37.1kwh, and power savings are obvious.
But insulated tubing is wrapped up in outside wear-and corrosion-resistant and wraps up in oil pipe when two oil pipes connect, it is necessary to be connect in oil pipe outside liner
The semicircle thermal insulation protection pipe sleeves of two docking are fixed in hoop outer wall installation, to toward workload is increased during oil pipe under underground, in oil well
When pump detection and workover plays oil pipe, semicircle thermal insulation protection pipe sleeve, which has to come off, causes the risk of down-hole accident.
The content of the invention
The purpose of the present invention：A kind of oil well heat-insulation and heat-preservation abrasionproof oil pipe is provided, reach improve well mouth of oil well oil outlet temperature,
Prevent the purpose of oil well bar eccentric wear and corrosion and scaling.
Oil well of the present invention is with heat-insulation and heat-preservation abrasionproof oil pipe by plain tubing, tubing coupling, 35CrMo inner tubes, thermal insulation layer, four
Fluorine gum cover, 35CrMo sealing shrouds composition；It is characterized in that：
The application thermal insulation layer under the 35CrMo outer wall of inner tube constant temperature identical with plain tubing length, constant pressure；
Remove in one end of the 35CrMo outer wall of inner tube for being coated with thermal insulation layer identical with 35CrMo sealing shroud length
Thermal insulation layer；
Remove in the other end of the 35CrMo outer wall of inner tube for being coated with thermal insulation layer identical with tetrafluoro gum cover length
Thermal insulation layer；
Load in the plain tubing both ends remove respectively it is identical with 35CrMo sealing shrouds, tetrafluoro gum cover length every
The 35CrMo inner tubes for being coated with thermal insulation layer of thermosphere；In the 35CrMo for removing the thermal insulation layer identical with 35CrMo sealing shroud length
Pipe outer wall set loads onto 35CrMo sealing shrouds, by 35CrMo outer wall of inner tube top, 35CrMo sealing shrouds top, plain tubing inner wall top
End is sealed with sub- arc welding；Extruding, which is covered, in the 35CrMo outer wall of inner tube for removing the thermal insulation layer identical with tetrafluoro gum cover length loads onto four
Fluorine gum cover, then loads onto tubing coupling；
The plain tubing is the oil pipe that this outer diameter is 73mm, 89mm, and oil field common used material is commercially available；
It with body is the supporting tubing coupling of 73mm, 89mm oil pipe that the tubing coupling, which is, oil field common used material, market
It is on sale；
58 × 1.5mm of 35CrMo inner tube specification overall diameter φ, the 68 × 3mm of φ, it is quenched through cold rolling processing and intermediate frequency
Processing, manufacturer：Fushun Heng Tong Steel Tube Co., ltd.
The thermal insulation layer is process for ZS-211 types reflecting heat insulation paint through constant temperature, constant pressure, insulation thickness
2.0~3mm, thermal insulation layer coating decoration producer：The auspicious auspicious petroleum thermal recovery equipment Co., Ltd in Hengshui；ZS-211 type reflecting heat insulations
The manufacturer of coating：Beijing will Sheng Weihua Chemical Co., Ltd.s, network address：http：//www.zswh.com.cn；Reflective insulation
The performance of thermal insulation coatings is published in the 7th phases of volume 2015 the 44th in Yao Mengjia et al.《Sufacing》On " heat insulating coatings
Introduction in a research and development and application " text；
58 × 2.0mm of tetrafluoro gum cover specification interior diameter φ, the 68 × 3mm of φ, length is 100~120mm, by Hengshui
Auspicious auspicious petroleum thermal recovery equipment Co., Ltd production.
58 × 2.0mm of 35CrMo sealing shroud specification interior diameter φ, the 68 × 3mm of φ, length is 100~120mm, by
The auspicious auspicious petroleum thermal recovery equipment Co., Ltd production in Hengshui.
Described removing in the one end for the 35CrMo outer wall of inner tube for being coated with thermal insulation layer is identical with 35CrMo sealing shroud length
Thermal insulation layer operating method, be known to row those skilled in the art and operating personnel, will herein be described in detail；
The other end in the 35CrMo outer wall of inner tube for being coated with thermal insulation layer removes identical with tetrafluoro gum cover length
The operating method of thermal insulation layer, is known to row those skilled in the art and operating personnel, will herein be described in detail；
Load in the plain tubing both ends remove respectively it is identical with 35CrMo sealing shrouds, tetrafluoro gum cover length heat-insulated
The operating method of the 35CrMo inner tubes for being coated with thermal insulation layer of layer, is known to row those skilled in the art and operating personnel, herein
It is not described in detail；
Described loads onto in the 35CrMo outer wall of inner tube sets for removing the thermal insulation layer identical with 35CrMo sealing shroud length
35CrMo sealing shrouds, 35CrMo outer wall of inner tube top, 35CrMo sealing shrouds top, the sub- arc welding of plain tubing inner wall are sealed
Operating method, be known to row those skilled in the art and operating personnel, will herein be described in detail；
Described loads onto tetrafluoro in the 35CrMo outer wall of inner tube set extruding for removing the thermal insulation layer identical with tetrafluoro gum cover length
Gum cover, then loads onto the operating method of tubing coupling, is known to row those skilled in the art and operating personnel, will herein be described in detail.
Beneficial effects of the present invention：Oil well of the present invention is applied to reservoir temperature more than 75 DEG C with heat-insulation and heat-preservation abrasionproof oil pipe
During oil well, wellhead temperature improves more than 15.5 DEG C；And oil well bar eccentric wear and corrosion and scaling are prevented, oil well pump detection period averagely prolongs
It is more than 1.2 times long.
Brief description of the drawings
Fig. 1 is a kind of oil well heat-insulation and heat-preservation abrasionproof oil pipe diagrammatic cross-section of the present invention.
In Fig. 1,1- plain tubings, 2-35CrMo inner tubes, 3- thermal insulation layers, 4-35CrMo sealing shrouds, 5,35CrMo sealing shrouds
Top, 6- tetrafluoros gum cover, 7, tubing coupling, 8,35CrMo outer wall of inner tube top, 9- plain tubing inner walls top.
Specific embodiment
Embodiment 1：By taking this outer diameter is 73mm heat-insulation and heat-preservation abrasionproof oil pipes as an example, to oil well heat-insulation and heat-preservation abrasionproof oil
Pipe illustrates.
Refering to attached drawing 1.A kind of oil well heat-insulation and heat-preservation abrasionproof oil pipe of the present invention, including：1. plain tubing；2. 35CrMo
Inner tube；3. thermal insulation layer；4. 35CrMo sealing shrouds；5. 35CrMo sealing shrouds top；6. tetrafluoro gum cover, 7. tubing couplings, 8.
35CrMo outer wall of inner tube top, 9. plain tubing inner wall tops.
The application thermal insulation layer 3 under the 35CrMo inner tube 2 outer wall constant temperature identical with 1 length of plain tubing, constant pressure；
Remove and 4 length phase of 35CrMo sealing shrouds in one end of 2 outer wall of 35CrMo inner tubes for being coated with thermal insulation layer 3
Same thermal insulation layer 3；
Remove in the other end of 2 outer wall of 35CrMo inner tubes for being coated with thermal insulation layer 3 identical with 6 length of tetrafluoro gum cover
Thermal insulation layer 3；
Loading both ends are removed identical with 35CrMo sealing shrouds 4,6 length of tetrafluoro gum cover respectively in the plain tubing 1
Thermal insulation layer 3 the 35CrMo inner tubes 2 for being coated with thermal insulation layer 3；Removing the thermal insulation layer 3 identical with 4 length of 35CrMo sealing shrouds
2 outer wall set of 35CrMo inner tubes load onto 35CrMo sealing shrouds 4, by 35CrMo outer wall of inner tube top 8,35CrMo sealing shrouds top 5,
Plain tubing inner wall top 9 is sealed with sub- arc welding；In the 35CrMo for removing the thermal insulation layer 3 identical with 6 length of tetrafluoro gum cover
Tetrafluoro gum cover 6 is loaded onto in the set extruding of 2 outer wall of pipe, then loads onto tubing coupling 7；
The plain tubing is the oil pipe that this outer diameter is 73mm；
It with body is the supporting tubing coupling of 73mm oil pipes that the tubing coupling, which is,；
58 × the 1.5mm of 35CrMo inner tube specification overall diameter φ；
The insulation thickness 2.0mm
Tetrafluoro gum cover specification interior diameter 58 × 2.0mm of φ length is 100mm；
35CrMo sealing shroud specification the interior diameters 58 × 2.0m of φ, length 100mm.
This outer diameter is 73mm heat-insulation and heat-preservation abrasionproof oil pipes after 15 mouthfuls of oil wells of more than 75 DEG C of reservoir temperature, well head temperature
Degree improves 19.4 DEG C；Oil well bar eccentric wear and corrosion and scaling are prevented, oil well pump detection period averagely extends 1.34 times.
Embodiment 2：By taking this outer diameter is 89mm heat-insulation and heat-preservation abrasionproof oil pipes as an example, to oil well heat-insulation and heat-preservation abrasionproof oil
Pipe illustrates.
Refering to attached drawing 1.A kind of oil well heat-insulation and heat-preservation abrasionproof oil pipe of the present invention, including：1. plain tubing；2. 35CrMo
Inner tube；3. thermal insulation layer；4. 35CrMo sealing shrouds；5. 35CrMo sealing shrouds top；6. tetrafluoro gum cover, 7. tubing couplings, 8.
35CrMo outer wall of inner tube top, 9. plain tubing inner wall tops.
The application thermal insulation layer 3 under the 35CrMo inner tube 2 outer wall constant temperature identical with 1 length of plain tubing, constant pressure；
Remove and 4 length phase of 35CrMo sealing shrouds in one end of 2 outer wall of 35CrMo inner tubes for being coated with thermal insulation layer 3
Same thermal insulation layer 3；
Remove in the other end of 2 outer wall of 35CrMo inner tubes for being coated with thermal insulation layer 3 identical with 6 length of tetrafluoro gum cover
Thermal insulation layer 3；
Loading both ends are removed identical with 35CrMo sealing shrouds 4,6 length of tetrafluoro gum cover respectively in the plain tubing 1
Thermal insulation layer 3 the 35CrMo inner tubes 2 for being coated with thermal insulation layer 3；Removing the thermal insulation layer 3 identical with 4 length of 35CrMo sealing shrouds
2 outer wall set of 35CrMo inner tubes load onto 35CrMo sealing shrouds 4, by 35CrMo outer wall of inner tube top 8,35CrMo sealing shrouds top 5,
Plain tubing inner wall top 9 is sealed with sub- arc welding；In the 35CrMo for removing the thermal insulation layer 3 identical with 6 length of tetrafluoro gum cover
Tetrafluoro gum cover 6 is loaded onto in the set extruding of 2 outer wall of pipe, then loads onto tubing coupling 7；
The plain tubing is the oil pipe that this outer diameter is 89mm；
It with body is the supporting tubing coupling of 89mm oil pipes that the tubing coupling, which is,；
68 × the 3mm of 35CrMo inner tube specification overall diameter φ；
The insulation thickness 3.0mm
Tetrafluoro gum cover specification interior diameter 68 × 3.0mm of φ length is 120mm；
35CrMo sealing shroud specification the interior diameters 68 × 3.0m of φ, length 120mm.
This outer diameter is 73mm heat-insulation and heat-preservation abrasionproof oil pipes after 11 mouthfuls of oil wells of more than 75 DEG C of reservoir temperature, well head temperature
Degree improves 17.7 DEG C；Oil well bar eccentric wear and corrosion and scaling are prevented, oil well pump detection period averagely extends 1.26 times.
The above is for only for ease of it will be understood by those skilled in the art that technical scheme, not limiting
The present invention.Within the spirit and principles of the invention, any modification, equivalent replacement, improvement and so on, should be included in this
Within the protection domain of invention.
Claims (1)
- A kind of 1. oil well heat-insulation and heat-preservation abrasionproof oil pipe, it is characterised in that：Oil well is with heat-insulation and heat-preservation abrasionproof oil pipe by plain tubing (1), 35CrMo inner tubes (2), thermal insulation layer (3), 35CrMo sealing shrouds (4), tetrafluoro gum cover (6), tubing coupling (7) composition；Commonly Oil pipe (1) this outer diameter is the oil pipe of 73mm, 89mm；35CrMo inner tubes (2) specification is 58 × 1.5mm of overall diameter φ, φ 68 ×3mm；Thermal insulation layer (3) thickness is 2.0~3mm；35CrMo sealing shrouds (4) specification for 58 × 2.0mm of interior diameter φ, φ 68 × 3mm, length are 100~120mm；Tetrafluoro gum cover (6) specification is 58 × 2.0mm of interior diameter φ, 68 × 3mm of φ, length for 100~ 120mm；It with body is the supporting tubing coupling of 73mm, 89mm oil pipe that tubing coupling (7), which is,；The application thermal insulation layer (3) under described 35CrMo inner tube (2) outer wall constant temperature identical with plain tubing (1) length, constant pressure；Remove and 35CrMo sealing shrouds (4) length in one end of described 35CrMo inner tubes (2) outer wall for being coated with thermal insulation layer (3) Identical thermal insulation layer (3)；Remove and tetrafluoro gum cover (6) length phase in the other end of described 35CrMo inner tubes (2) outer wall for being coated with thermal insulation layer (3) Same thermal insulation layer (3)；Load both ends in the plain tubing (1) respectively to remove and 35CrMo sealing shrouds (4), tetrafluoro gum cover (6) length phase The 35CrMo inner tubes (2) for being coated with thermal insulation layer (3) of same thermal insulation layer (3)；It is identical with 35CrMo sealing shrouds (4) length removing 35CrMo inner tubes (2) outer wall set of thermal insulation layer (3) load onto 35CrMo sealing shrouds (4), by 35CrMo inner tubes (2) outer wall top (8), 35CrMo sealing shrouds top (5), plain tubing inner wall top (9) are sealed with sub- arc welding；Removing and tetrafluoro gum cover (6) Tetrafluoro gum cover (6) is loaded onto in 35CrMo inner tubes (2) outer wall set extruding of the identical thermal insulation layer of length (3), then loads onto tubing coupling (7)。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610255875.5A CN106014269B (en) | 2016-04-25 | 2016-04-25 | A kind of oil well heat-insulation and heat-preservation abrasionproof oil pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610255875.5A CN106014269B (en) | 2016-04-25 | 2016-04-25 | A kind of oil well heat-insulation and heat-preservation abrasionproof oil pipe |
Publications (2)
| Publication Number | Publication Date |
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| CN106014269A CN106014269A (en) | 2016-10-12 |
| CN106014269B true CN106014269B (en) | 2018-05-04 |
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| CN201610255875.5A Active CN106014269B (en) | 2016-04-25 | 2016-04-25 | A kind of oil well heat-insulation and heat-preservation abrasionproof oil pipe |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107246243B (en) * | 2017-02-13 | 2019-11-05 | 曹俊杰 | A kind of eccentric abrasion prevention anticorrosion heat-insulation and heat-preservation oil pipe improving well mouth of oil well temperature |
| CN107060656B (en) * | 2017-06-30 | 2023-07-07 | 刘兴仁 | Lining heat insulation oil pipe |
| CN110056330A (en) * | 2019-03-13 | 2019-07-26 | 中国电建集团河南工程有限公司 | Geothermal well down-hole pipe medicine system and descaling method |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4400019A (en) * | 1981-04-22 | 1983-08-23 | Unisert Systems, Inc. | Multilayer pipe joint |
| US4453570A (en) * | 1981-06-29 | 1984-06-12 | Chevron Research Company | Concentric tubing having bonded insulation within the annulus |
| CN101289925B (en) * | 2007-04-18 | 2012-10-17 | 扬州龙川钢管有限公司 | Heat insulated tubing machining process |
| CN204782808U (en) * | 2015-05-27 | 2015-11-18 | 盘锦辽河油田金环实业有限责任公司 | Directly link type heat insulation oil pipe |
| CN205135437U (en) * | 2015-11-20 | 2016-04-06 | 南通市华业石油机械有限公司 | Heat preservation type inside lining oil pipe |
| CN205135442U (en) * | 2015-12-02 | 2016-04-06 | 胜利油田胜机石油装备有限公司 | Interior heat preservation high vacuum insulation oil pipe that scribbles |
| CN205638251U (en) * | 2016-04-25 | 2016-10-12 | 曹俊杰 | Oil well is with thermal -insulated heat preservation abrasionproof oil pipe |
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Effective date of registration: 20210623 Address after: 053700 Gaozhuang village, Fucheng Town, Fucheng County, Hengshui City, Hebei Province Patentee after: Hebei Huanya petroleum drilling and production technology Co.,Ltd. Address before: 062150 No.7, dongdou village, xixingdian Township, Botou City, Hebei Province Patentee before: Cao Junjie Patentee before: Li Guodong Patentee before: Sun Fenghe |
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Address after: 053700 Gaozhuang village, Fucheng Town, Fucheng County, Hengshui City, Hebei Province Patentee after: Hebei Huanya petroleum drilling and production technology Co.,Ltd. Address before: 053700 Gaozhuang village, Fucheng Town, Fucheng County, Hengshui City, Hebei Province Patentee before: Hebei Huanya petroleum drilling and production technology Co.,Ltd. |
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