CN108204217B - Electric heating chemical packer for screen pipe well completion horizontal well and use method - Google Patents
Electric heating chemical packer for screen pipe well completion horizontal well and use method Download PDFInfo
- Publication number
- CN108204217B CN108204217B CN201611186033.5A CN201611186033A CN108204217B CN 108204217 B CN108204217 B CN 108204217B CN 201611186033 A CN201611186033 A CN 201611186033A CN 108204217 B CN108204217 B CN 108204217B
- Authority
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- China
- Prior art keywords
- packer
- well
- plugging agent
- heating
- temperature
- 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.)
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- 239000000126 substance Substances 0.000 title claims abstract description 23
- 238000005485 electric heating Methods 0.000 title claims abstract description 13
- 238000000034 method Methods 0.000 title abstract description 9
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 43
- 238000010438 heat treatment Methods 0.000 claims abstract description 30
- 238000011010 flushing procedure Methods 0.000 claims description 18
- 230000008878 coupling Effects 0.000 claims description 9
- 238000010168 coupling process Methods 0.000 claims description 9
- 238000005859 coupling reaction Methods 0.000 claims description 9
- 238000007711 solidification Methods 0.000 claims description 5
- 230000008023 solidification Effects 0.000 claims description 5
- 238000002347 injection Methods 0.000 claims description 4
- 239000007924 injection Substances 0.000 claims description 4
- 230000005465 channeling Effects 0.000 claims description 3
- 238000005406 washing Methods 0.000 claims description 3
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 11
- 230000000694 effects Effects 0.000 abstract description 6
- 230000009974 thixotropic effect Effects 0.000 abstract description 5
- 238000007789 sealing Methods 0.000 abstract description 2
- 238000012856 packing Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000004568 cement Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 230000008719 thickening Effects 0.000 description 2
- 238000010793 Steam injection (oil industry) Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010297 mechanical methods and process Methods 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
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
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
-
- 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
- E21B36/00—Heating, cooling or insulating arrangements for boreholes or wells, e.g. for use in permafrost zones
- E21B36/04—Heating, cooling or insulating arrangements for boreholes or wells, e.g. for use in permafrost zones using electrical heaters
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/10—Geothermal energy
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (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)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The invention discloses an electric heating chemical packer for a screen pipe well completion horizontal well and a use method thereof. The heating resistance wire is connected with a temperature control device in a control cabinet on the ground through an armored cable. According to the invention, an oil pipe and a packer are utilized, a curable plugging agent which has high thixotropic property and is sensitive to temperature is placed in an annulus between a screen pipe and a well wall, and is cured in an electric heating mode to form an impermeable high-strength slug, so that the purpose of sealing the annulus is achieved, the water outlet part is sealed off in sections or directly outside the pipe, and the development effect of a horizontal well is improved.
Description
Technical Field
The invention relates to an oilfield downhole operation packing technology, in particular to an electric heating chemical packer for a screen pipe well completion horizontal well and a use method thereof.
Background
The horizontal well has become an important mode of thick oil thermal recovery development, and because of factors such as strong reservoir heterogeneity, large oil-water viscosity ratio, sufficient side bottom water energy and the like, the problems of quick water rise, quick yield decline and the like occur after the horizontal well is put into production, and water shutoff of the horizontal well has become a research hot spot in the industry. The well completion modes of the oilfield horizontal well in China comprise perforation well completion and screen pipe well completion, wherein the screen pipe well completion is the main well completion mode, and most of the well completion modes are slotted screen pipe well completion modes without external pipe separation. Because of the particularity of well type and well completion mode, the plugging agent and the process method commonly used in the vertical well cannot meet the water plugging requirement of the horizontal well.
At present, various technologies such as chemical water shutoff, mechanical water blocking and central control are formed for a conventional oil well, but for a screen pipe well completion horizontal well, effective packing is difficult to carry out by a conventional mechanical method due to annular space between a screen pipe and a well wall, and injection of plugging agent can generate transverse flow in the annular space, so that sectional steam injection and water shutoff effects of the horizontal well are not ideal.
No similar technique was found after the search.
Disclosure of Invention
The invention aims to provide an electric heating chemical packer for a screen pipe well completion horizontal well and a use method thereof, wherein an oil pipe and a packer are utilized, a curable plugging agent which has high thixotropic property and is sensitive to temperature is placed in an annulus between the screen pipe and a well wall, and is cured in an electric heating mode to form an impermeable high-strength slug, so that the purpose of sealing the annulus is achieved, the water outlet part is sealed off in sections outside the pipe or directly, and the development effect of the horizontal well is improved.
In order to achieve the purpose, the invention adopts the following technical scheme that the electric heating chemical packer for the screen pipe completion horizontal well comprises a packer barrel and a well washing valve arranged at the rear end of the packer barrel, wherein a heating resistance wire is arranged on the inner wall of the packer barrel, and meanwhile, the packer barrel is provided with a radial plugging agent discharge hole.
The heating resistance wire is connected with a temperature control device in a control cabinet on the ground through an armored cable.
And the front port of the packer cylinder body is connected with an oil pipe through a coupling.
The packer cylinder is located inside the screen pipe.
In order to achieve the other purpose, the invention adopts the following technical scheme that the method for using the electric heating chemical packer for the screen pipe completion horizontal well is characterized in that a chemical packing material, namely a high-thixotropic curable plugging agent sensitive to temperature, sequentially enters the chemical packer through a choke manifold, an oil pipe and a coupling, and is injected into the annulus of the screen pipe and the well wall through plugging agent discharge holes around the packer cylinder; by controlling the heating temperature of the underground heating resistor, the temperature of the plugging agent in the annular space is increased to a solidification temperature point, the plugging agent is solidified, and a high-strength temperature-resistant solidified body is formed in the annular space between the sieve tube and the well wall, so that the plugging of the steam channeling position or the well section with high water content is achieved, and the development effect of the thermal production horizontal well is improved.
Compared with the prior art, the invention has the following beneficial effects:
after the high-thixotropy temperature-sensitive curable plugging agent is injected into the annular space between the sieve tube and the well wall through the chemical packer, the heating resistor around the packer cylinder is heated through the underground heating cable, and the temperature of the plugging agent in the annular space is increased to a solidification temperature point, so that a high-temperature-resistant impermeable high-strength solidification body is formed. The high-thixotropy curable plugging agent sensitive to temperature can be high-temperature-resistant thixotropic cement or high-temperature-resistant thixotropic thickening resin.
The invention solves the technical problem of poor well completion plugging effect of the screen pipe of the horizontal well, and can perform fixed-point plugging on the screen pipe and the well wall annulus through electric heating.
The electric heating chemical packer for the horizontal well is suitable for plugging the horizontal well with low well temperature, and is more suitable for chemical plugging of the horizontal well near-wellbore zone of a shallow layer and ultra-shallow layer screen pipe well completion.
The chemical packer has the characteristics of simple structure, simple and convenient construction, economy and high efficiency.
Drawings
FIG. 1 is a schematic diagram of the structure of an electrically heated chemical packer for a screen well completion horizontal well of the present invention.
In the figure: 1. an armored cable; 2. heating the resistance wire; 3. a well flushing valve; 4. a packer cylinder; 5. coupling; 6. a control cabinet; 7. a ground injection pipe; 8. a sleeve; 9. an oil pipe; 10. a screen pipe; 11. a well wall; 12. a surface layer sleeve; 13. downhole.
Detailed Description
The detailed description and technical content of the present invention are described below with reference to the accompanying drawings, which are provided for reference and description only, and are not intended to limit the present invention.
According to fig. 1, the electric heating chemical packer for the screen pipe well completion horizontal well comprises a packer barrel 4 and a well flushing valve 3 arranged at the rear end of the packer barrel, wherein a heating resistance wire 2 is arranged on the inner wall of the packer barrel, and meanwhile, the packer barrel is provided with a radial plugging agent discharge hole. The heating resistance wire is connected with a temperature control device in a control cabinet 6 on the ground through an armored cable 1. The front port of the packer cylinder body is connected with an oil pipe 9 through a coupling 5. The packer cylinder is located inside the screen 10.
The packer is characterized in that an inlet and a plugging agent discharge hole are formed in the packer barrel, a wellhead is connected to an oil pipe through a coupling, a well flushing valve is arranged at the tail end of the barrel, and the well flushing valve is in a closed state when the pressure of the well flushing valve is low. The plugging agent discharge holes are distributed in the radial direction of the packer cylinder body and are channels for injecting the plugging agent into the annular space between the sieve tube and the well wall.
The armored cable comprises a heating cable, a thermocouple and a lead wire. The underground end of the armored cable is connected to a heating resistor of the packer, the armored cable is connected to a ground wellhead control cabinet through an oil sleeve annulus, and the heating temperature of the underground packer is controlled through the control cabinet.
The heating resistor is coated on the packer cylinder, and the heating cable is used for heating the plugging agent in the space of the ring through the control cabinet to solidify the plugging agent.
The well flushing valve is positioned at the tail end of the packer, the well flushing valve is in a closed state when the plugging agent is injected, the plugging agent is squeezed between the sieve tube and the well wall along the discharge hole on the cylinder body, and after the plugging agent is injected, the well flushing valve is opened by pressurization, so that the redundant plugging agent in the packer is cleaned.
The invention consists of a packer barrel 4, an armored cable 1, a heating resistor 2 and a well flushing valve 3. The chemical packing material, i.e. the high thixotropic curable plugging agent which is sensitive to temperature, flows through the chemical packer device connected with the lower end of the oil pipe through the ground injection pipe 7, passes through the oil pipe 8, enters the chemical packer through the coupling 5, and is injected into the annulus between the screen pipe 10 and the well wall 11 under the action of pressure. The residual plugging agent in the packer is washed out by a well washing valve 3. The ground control cabinet 6 controls the heating cable 1 to heat the heating resistor 2 wrapped around the packer cylinder. The temperature of the plugging agent in the annular space is increased to a solidification temperature point, the plugging agent is solidified, a high-strength temperature-resistant solidified body is formed in the annular space, the purpose of plugging a steam channeling position or a high-water-content well section is achieved, and the development effect of a horizontal well is improved.
The high-thixotropy curable plugging agent sensitive to temperature can be high-temperature-resistant high-thixotropy cement or high-temperature-resistant high-thixotropy thickening resin. Curable plugging agents are prior art in oilfield production.
The foregoing description of the preferred embodiments of the present invention is not intended to limit the scope of the invention, but rather to limit the scope of the invention to the equivalents of the claims to which the invention pertains.
Claims (1)
1. The electric heating chemical packer for the screen pipe well completion horizontal well is characterized by comprising a packer barrel and a well washing valve arranged at the rear end of the packer barrel, wherein a heating resistance wire is arranged on the inner wall of the packer barrel, and meanwhile, a radial plugging agent discharge hole is formed in the packer barrel; the heating resistance wire is connected with a temperature control device in a control cabinet on the ground through an armored cable; the front port of the packer cylinder body is connected with an oil pipe through a coupling; the packer cylinder body is positioned in the screen pipe;
the packer is characterized in that an inlet and a plugging agent discharge hole are formed in the packer cylinder, a wellhead is connected to an oil pipe through a coupling, a well flushing valve is arranged at the tail end of the cylinder, and the well flushing valve is in a closed state when the pressure of the well flushing valve is low; the plugging agent discharge holes are distributed in the radial direction of the packer cylinder body and are channels for injecting plugging agent into the annular space of the sieve tube and the well wall;
the armored cable comprises a heating cable, a thermocouple and a lead wire, the lower end of the armored cable is connected to a heating resistor of the packer, the armored cable is connected to a ground wellhead control cabinet through an oil sleeve annulus, and the heating temperature of the underground packer is controlled through the control cabinet;
the heating resistor is coated on the packer cylinder, and the heating cable is used for heating the plugging agent in the space of the ring through the control cabinet to solidify the plugging agent;
the well flushing valve is positioned at the tail end of the packer, the well flushing valve is in a closed state when the plugging agent is injected, the plugging agent is squeezed between the sieve tube and the well wall along the discharge hole on the cylinder body, the well flushing valve is opened by pressurization after the plugging agent is injected, and the redundant plugging agent in the packer is cleaned;
the chemical packer consists of a packer barrel, an armored cable, a heating resistor and a well flushing valve, a high-thixotropy curable plugging agent which is sensitive to temperature flows through a chemical packer device connected with the lower end of an oil pipe through the oil pipe by a ground injection pipe, and enters the chemical packer through a coupling, and the plugging agent is injected into the annulus of a sieve tube and a well wall under the action of pressure; flushing off the residual plugging agent in the packer through a well flushing valve, and controlling a heating cable to heat a heating resistor coated around the packer cylinder by a ground control cabinet; the temperature of the plugging agent in the annular space is increased to a solidification temperature point, the plugging agent is solidified, a high-strength temperature-resistant solidified body is formed in the annular space, and the steam channeling position or the high-water-content well section is plugged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611186033.5A CN108204217B (en) | 2016-12-20 | 2016-12-20 | Electric heating chemical packer for screen pipe well completion horizontal well and use method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611186033.5A CN108204217B (en) | 2016-12-20 | 2016-12-20 | Electric heating chemical packer for screen pipe well completion horizontal well and use method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108204217A CN108204217A (en) | 2018-06-26 |
| CN108204217B true CN108204217B (en) | 2023-09-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611186033.5A Active CN108204217B (en) | 2016-12-20 | 2016-12-20 | Electric heating chemical packer for screen pipe well completion horizontal well and use method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108204217B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111075418A (en) * | 2020-01-20 | 2020-04-28 | 中国石油大学(北京) | Reservoir exploitation device and method |
| CN112922558B (en) * | 2021-03-24 | 2022-10-28 | 中海油田服务股份有限公司 | Visual experimental apparatus |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU901473A1 (en) * | 1980-04-18 | 1982-01-30 | Всесоюзный Ордена Трудового Красного Знамени Научно-Исследовательский Институт Буровой Техники | Well device for heating plugging mix |
| CN2498324Y (en) * | 2001-07-27 | 2002-07-03 | 大庆油田有限责任公司 | Lost circulation additives carrier |
| CN101175893A (en) * | 2005-04-13 | 2008-05-07 | 贝克休斯公司 | Self conforming screen |
| CN101761319A (en) * | 2009-12-29 | 2010-06-30 | 中国石油天然气集团公司 | Method for injecting injection fluid by outside-tube chemical packer |
| CN102758598A (en) * | 2012-08-03 | 2012-10-31 | 中国海洋石油总公司 | Integrated pipe column for accurate quantitative injection and seal examination and seal examination method thereof |
| CN203808945U (en) * | 2014-04-18 | 2014-09-03 | 中国海洋石油总公司 | Water plugging and controlling technical tubular column for open hole screen pipe completion horizontal well root |
| CN206397465U (en) * | 2016-12-20 | 2017-08-11 | 中国石油化工股份有限公司 | A kind of sieve tube completion horizontal well electrical heating chemical packer |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9090810B2 (en) * | 2010-12-14 | 2015-07-28 | Altarock Energy, Inc. | High temperature temporary diverter and lost circulation material |
-
2016
- 2016-12-20 CN CN201611186033.5A patent/CN108204217B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU901473A1 (en) * | 1980-04-18 | 1982-01-30 | Всесоюзный Ордена Трудового Красного Знамени Научно-Исследовательский Институт Буровой Техники | Well device for heating plugging mix |
| CN2498324Y (en) * | 2001-07-27 | 2002-07-03 | 大庆油田有限责任公司 | Lost circulation additives carrier |
| CN101175893A (en) * | 2005-04-13 | 2008-05-07 | 贝克休斯公司 | Self conforming screen |
| CN101761319A (en) * | 2009-12-29 | 2010-06-30 | 中国石油天然气集团公司 | Method for injecting injection fluid by outside-tube chemical packer |
| CN102758598A (en) * | 2012-08-03 | 2012-10-31 | 中国海洋石油总公司 | Integrated pipe column for accurate quantitative injection and seal examination and seal examination method thereof |
| CN203808945U (en) * | 2014-04-18 | 2014-09-03 | 中国海洋石油总公司 | Water plugging and controlling technical tubular column for open hole screen pipe completion horizontal well root |
| CN206397465U (en) * | 2016-12-20 | 2017-08-11 | 中国石油化工股份有限公司 | A kind of sieve tube completion horizontal well electrical heating chemical packer |
Non-Patent Citations (1)
| Title |
|---|
| 院文庆 ; 李长宏 ; 赵蕊 ; .稠油热采长停井二次挖潜利用配套工艺技术.西部探矿工程.2008,(09),全文. * |
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| Publication number | Publication date |
|---|---|
| CN108204217A (en) | 2018-06-26 |
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