CN203742574U - Heat insulation oil casing well completion pipe string - Google Patents
Heat insulation oil casing well completion pipe string Download PDFInfo
- Publication number
- CN203742574U CN203742574U CN201420068385.0U CN201420068385U CN203742574U CN 203742574 U CN203742574 U CN 203742574U CN 201420068385 U CN201420068385 U CN 201420068385U CN 203742574 U CN203742574 U CN 203742574U
- Authority
- CN
- China
- Prior art keywords
- casing
- heat insulation
- oil
- string
- insulation tubing
- 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.)
- Expired - Lifetime
Links
- 238000009413 insulation Methods 0.000 title claims abstract description 59
- 238000010168 coupling process Methods 0.000 claims abstract description 13
- 238000005859 coupling reaction Methods 0.000 claims abstract description 13
- 239000011261 inert gas Substances 0.000 claims abstract description 5
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 4
- 239000010959 steel Substances 0.000 claims abstract description 4
- 238000004519 manufacturing process Methods 0.000 claims description 17
- 238000002955 isolation Methods 0.000 claims description 8
- 238000003754 machining Methods 0.000 claims description 6
- 239000011148 porous material Substances 0.000 claims description 4
- 239000007789 gas Substances 0.000 claims description 3
- 239000012774 insulation material Substances 0.000 claims description 3
- 239000001257 hydrogen Substances 0.000 abstract description 2
- 229910052739 hydrogen Inorganic materials 0.000 abstract description 2
- 239000010410 layer Substances 0.000 abstract 4
- 239000004568 cement Substances 0.000 abstract 3
- 239000002344 surface layer Substances 0.000 abstract 3
- 125000004435 hydrogen atom Chemical class [H]* 0.000 abstract 1
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 239000002699 waste material Substances 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 235000014676 Phragmites communis Nutrition 0.000 description 1
- 238000010795 Steam Flooding Methods 0.000 description 1
- 238000010793 Steam injection (oil industry) Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Thermal Insulation (AREA)
Abstract
The utility model relates to a heat insulation oil casing well completion pipe string. The heat insulation oil casing well completion pipe string is characterized by comprising a surface layer casing, well cementation cement, a heat insulation oil casing, a sub-coupling, an oil-string casing, a float collar and a guiding shoe, wherein the heat insulation oil casing is connected with the oil-string casing through the sub-coupling, the surface-layer casing is arranged around the upper end of the heat insulation oil casing in a spaced and sleeved mode, the position between the heat insulation oil casing and the surface-layer casing is filled with the well cementation cement, the positions around the heat insulation oil casing, the sub-coupling, the oil-string casing, the float collar, the guiding shoe and the oil-string casing are filled with the well cementation cement, and holes are perforated in the portion, located in the position of an oil-string segment, of the oil-string casing. The heat insulation oil casing well completion pipe string has three layers of steel pipes and is of a two-insulation-layer structure, and therefore the heat insulation performance is greatly improved, inert gas is injected in the second insulation layer so that hydrogen seepage is slowed down, the heat insulation service life is prolonged, and the heat loss problem in the thread connecting position is fundamentally solved due to the two-layer structure in the thread connecting position.
Description
Technical field
The utility model relates to a kind of heat insulation tubing and casing completion tubular column, belongs to thick oil thermal extraction string technology field.
Background technology
Steam soak and two kinds of techniques of steam flooding are taked in thickened oil recovery both at home and abroad at present conventionally, and these two kinds of techniques all need to use insulated tubing as steam injection instrument, in the annular space of oil jacket, companion's note nitrogen is auxiliary heat insulation, must adopt the pressure of packer or nitrogen to stop high temperature and high pressure steam to contact with sleeve pipe simultaneously.This technique at protection oil well casing, reduce wellbore heat loss, promote note and adopt aspect effect and played positive effect; but after application for many years, find that it exists that complex process, tubing string reliability are low, production efficiency and recovery ratio low; and the unavoidable shortcoming of box cupling junction heat waste, causes the waste of steam in heavy crude heat extraction process and the generation of cover damage problem.
Utility model content
The purpose of this utility model is to provide a kind of heat insulation tubing and casing completion tubular column that can overcome above-mentioned defect, excellent working performance.Its technical scheme is:
A kind of heat insulation tubing and casing completion tubular column, it is characterized in that: comprise surface pipe, cementing concrete, be positioned at heat insulation tubing and casing more than oil layer section, sub-coupling, production string, float collar and guide shoe, wherein heat insulation tubing and casing is connected with production string by sub-coupling, surface pipe gap is sleeved on the surrounding of heat insulation tubing and casing upper end, between heat insulation tubing and casing and surface pipe and heat insulation tubing and casing, sub-coupling, production string, the surrounding of floating reed and guide shoe production string is filled with cementing concrete, and be positioned on the production string at oil layer section place and cementing concrete and be evenly equipped with the pore that level runs through.
Described heat insulation tubing and casing completion tubular column, heat insulation tubing and casing is propped up gas thread serial connection by many groups and is formed, each group arm includes outer tube, intervalve and the inner tube of steel gap suit, wherein intervalve one end machining internal thread, other end threading, one end of intervalve machining internal thread and outer tube weld at pipe end place, weld at reserved internal thread length place with inner tube, and one end of intervalve threading and outer tube, in the welding of reserved external thread length place, weld at pipe end place with inner tube; Filling with insulation material vacuumize and form the first isolation layer in the annular space that outer tube and intervalve form, vacuumizes rear inert gas injecting, formation the second isolation layer in the annular space of intervalve and inner tube.
Compared with prior art, its advantage is the heat insulation tubing and casing completion tubular column of the utility model:
1) heat insulation tubing and casing has double thermal insulation layer, has greatly promoted the heat-proof quality of product;
2) in the inner tube of heat insulation tubing and casing and the annular space of intervalve, inert gas injecting has slowed down " hydrogen oozes " phenomenon, has extended the heat insulation life-span;
3) junction between heat insulation tubing and casing is double-decker, has thoroughly solved the heat waste problem at this place.The heat-proof quality of the heat insulation tubing and casing completion tubular column of the utility model is promoted to D～E level by current A～E level, junction heat waste 70% is reduced to 10% by what originally accounted for the total heat waste of tubing string, it is estimated that, the heat insulation life-span of the heat insulation tubing and casing completion tubular column of the utility model can extend to 8～10 years by current 2 years;
4) cover that has solved junction between heat insulation tubing and casing damages problem;
5) the heat insulation tubing and casing completion tubular column of the utility model has internal diameter unification, and junction is without turbulent advantage.
Brief description of the drawings
Fig. 1 is the structural representation of the heat insulation tubing and casing completion tubular column of the utility model embodiment.
Fig. 2 be embodiment illustrated in fig. 1 in the structural representation of heat insulation tubing and casing.
In figure: 1, surface pipe 2, cementing concrete 3, heat insulation tubing and casing 4, sub-coupling 5, production string 6, float collar 7, guide shoe 8, pore 9, outer tube 10, intervalve 11, inner tube 12, the first isolation layer 13, the second isolation layer 14, oil layer section
Detailed description of the invention
Describe in detail according to the utility model and be described further below in conjunction with accompanying drawing.In the embodiment shown in Fig. 1-2: comprise surface pipe 1, cementing concrete 2, be positioned at the more than 14 heat insulation tubing and casing 3 of oil layer section, sub-coupling 4, production string 5, float collar 6 and guide shoe 7, wherein heat insulation tubing and casing 3 is propped up gas thread serial connection by many groups and is formed, each group arm includes the outer tube 9 of steel gap suit, intervalve 10 and inner tube 11, wherein intervalve 10 one end machining internal threads, other end threading, one end of intervalve 10 machining internal threads and outer tube 9 weld at pipe end place, weld at reserved internal thread length place with inner tube 11, one end of intervalve 10 threadings and outer tube 9 weld at reserved external thread length place, weld at pipe end place with inner tube 11, filling with insulation material vacuumize and form the first isolation layer 12 in the annular space that outer tube 9 and intervalve 10 form, vacuumizes rear inert gas injecting in the annular space of intervalve 10 and inner tube 11, forms the second isolation layer 13.The lower end of heat insulation tubing and casing 3 is connected with production string 5 by sub-coupling 4, surface pipe 1 gap is sleeved on the surrounding of heat insulation tubing and casing 3 upper ends, between heat insulation tubing and casing 3 and surface pipe 1 and around heat insulation tubing and casing 3, sub-coupling 4, production string 5, float collar 6 and guide shoe 7 production strings 5, be filled with cementing concrete 2, and be positioned on the production string 5 at oil layer section 14 places and cementing concrete 2 and be evenly equipped with the pore 8 that level runs through.
Novel heat-insulation tubing and casing completion tubular column is for oil producing operation test.By SY/T5324-94 standard, the heat insulation tubing and casing in completion tubular column (newly pipe) and the heat insulation tubing and casing (old pipe) of use after 2 years are tested to its heat-proof quality, the results are shown in Table 1.Visible, the heat-proof quality of the new pipe of tubing and casing in novel heat-insulation tubing and casing completion tubular column all, between D～E, is used apparent heat conductivity after 2 years to change not quite, and data accordingly, can calculate, the heat insulation life-span of the heat insulation tubing and casing completion tubular column of the present invention can reach 8～10 years.
The heat-proof quality of heat insulation tubing and casing in table 1 completion tubular column of the present invention
Claims (2)
1. a heat insulation tubing and casing completion tubular column, it is characterized in that: comprise surface pipe (1), cementing concrete (2), be positioned at the above heat insulation tubing and casing (3) of oil layer section (14), sub-coupling (4), production string (5), float collar (6) and guide shoe (7), wherein heat insulation tubing and casing (3) is connected with production string (5) by sub-coupling (4), surface pipe (1) gap is sleeved on the surrounding of heat insulation tubing and casing (3) upper end, between heat insulation tubing and casing (3) and surface pipe (1) and heat insulation tubing and casing (3), sub-coupling (4), production string (5), the surrounding of float collar (6) and guide shoe (7) production string (5) is filled with cementing concrete (2), and be positioned on production string (5) that oil layer section (14) locates and cementing concrete (2) and be evenly equipped with the pore (8) that level runs through.
2. heat insulation tubing and casing completion tubular column claimed in claim 1, its characteristic is: heat insulation tubing and casing (3) is propped up gas thread serial connection by many groups and formed, each group arm includes the outer tube (9) of steel gap suit, intervalve (10) and inner tube (11), wherein intervalve (10) one end machining internal thread, other end threading, one end and the outer tube (9) of intervalve (10) machining internal thread weld at pipe end place, weld at reserved internal thread length place with inner tube (11), one end of intervalve (10) threading and outer tube (9) weld at reserved external thread length place, weld at pipe end place with inner tube (11), filling with insulation material vacuumize and form the first isolation layer (12) in the annular space that outer tube (9) and intervalve (10) form, in the annular space of intervalve (10) and inner tube (11), vacuumize rear inert gas injecting, form the second isolation layer (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420068385.0U CN203742574U (en) | 2014-02-17 | 2014-02-17 | Heat insulation oil casing well completion pipe string |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420068385.0U CN203742574U (en) | 2014-02-17 | 2014-02-17 | Heat insulation oil casing well completion pipe string |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203742574U true CN203742574U (en) | 2014-07-30 |
Family
ID=51342391
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420068385.0U Expired - Lifetime CN203742574U (en) | 2014-02-17 | 2014-02-17 | Heat insulation oil casing well completion pipe string |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203742574U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103867173A (en) * | 2014-02-17 | 2014-06-18 | 胜利油田孚瑞特石油装备有限责任公司 | Well-completion pipe column for heat-insulated oil casing and manufacturing method thereof |
| CN106368633A (en) * | 2016-08-30 | 2017-02-01 | 中国石油大学(华东) | Annulus closed pressure control tubular column system for deepwater oil and gas producing well |
| CN109424325A (en) * | 2017-08-22 | 2019-03-05 | 中国石油化工股份有限公司华北油气分公司石油工程技术研究院 | A kind of flow string and oil extraction system |
-
2014
- 2014-02-17 CN CN201420068385.0U patent/CN203742574U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103867173A (en) * | 2014-02-17 | 2014-06-18 | 胜利油田孚瑞特石油装备有限责任公司 | Well-completion pipe column for heat-insulated oil casing and manufacturing method thereof |
| CN106368633A (en) * | 2016-08-30 | 2017-02-01 | 中国石油大学(华东) | Annulus closed pressure control tubular column system for deepwater oil and gas producing well |
| CN106368633B (en) * | 2016-08-30 | 2018-06-29 | 中国石油大学(华东) | Deep water hydrocarbon producing well annular space seal-off pressure regulates and controls tubular column system |
| CN109424325A (en) * | 2017-08-22 | 2019-03-05 | 中国石油化工股份有限公司华北油气分公司石油工程技术研究院 | A kind of flow string and oil extraction system |
| CN109424325B (en) * | 2017-08-22 | 2021-09-17 | 中国石油化工股份有限公司华北油气分公司石油工程技术研究院 | Oil production pipe and oil production system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200302 Address after: 255000 west head of Weisi Road, Qilu Chemical Industry Zone, Linzi District, Zibo City, Shandong Province Patentee after: ZIBO FURUITE THERMAL ENERGY TECHNOLOGY Co.,Ltd. Address before: 257082 No. 203, South Road, Dongying District, Shandong, Dongying Patentee before: SHENGLI OILFIELD FREET PETROLEUM EQUIPMENT CO.,LTD. |
|
| TR01 | Transfer of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Insulated casing completion string Effective date of registration: 20220530 Granted publication date: 20140730 Pledgee: Qi commercial bank Limited by Share Ltd. Linzi branch Pledgor: ZIBO FURUITE THERMAL ENERGY TECHNOLOGY Co.,Ltd. Registration number: Y2022980006527 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140730 |
|
| CX01 | Expiry of patent term |