CN203978386U - A kind of oil well heat injection nitrogen well washing system - Google Patents
A kind of oil well heat injection nitrogen well washing system Download PDFInfo
- Publication number
- CN203978386U CN203978386U CN201420121802.3U CN201420121802U CN203978386U CN 203978386 U CN203978386 U CN 203978386U CN 201420121802 U CN201420121802 U CN 201420121802U CN 203978386 U CN203978386 U CN 203978386U
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- China
- Prior art keywords
- nitrogen
- oil
- oil well
- well
- washing system
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- 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
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- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 title claims abstract description 96
- 229910052757 nitrogen Inorganic materials 0.000 title claims abstract description 48
- 239000003129 oil well Substances 0.000 title claims abstract description 30
- 238000005406 washing Methods 0.000 title claims abstract description 13
- 238000002347 injection Methods 0.000 title claims abstract description 12
- 239000007924 injection Substances 0.000 title claims abstract description 12
- 238000010438 heat treatment Methods 0.000 claims description 17
- 239000012528 membrane Substances 0.000 claims description 2
- 239000003921 oil Substances 0.000 abstract description 15
- 230000000694 effects Effects 0.000 abstract description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 239000000295 fuel oil Substances 0.000 abstract description 5
- 230000006378 damage Effects 0.000 abstract description 4
- 239000007789 gas Substances 0.000 abstract description 4
- 208000027418 Wounds and injury Diseases 0.000 abstract description 3
- 208000014674 injury Diseases 0.000 abstract description 3
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 238000010926 purge Methods 0.000 abstract description 2
- 238000005065 mining Methods 0.000 abstract 1
- 239000001993 wax Substances 0.000 description 16
- 238000000034 method Methods 0.000 description 7
- 239000012188 paraffin wax Substances 0.000 description 7
- 238000011010 flushing procedure Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 230000008021 deposition Effects 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000013043 chemical agent Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000003292 diminished effect Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
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- Earth Drilling (AREA)
Abstract
The utility model relates to a kind of oil well heat injection nitrogen well washing system, by nitrogen car group processed, nitrogen heater, connection manifold, wellhead assembly and down-hole string, formed, nitrogen car group processed is connected with nitrogen heater, nitrogen heater is connected with wellhead assembly by connecting manifold, and wellhead assembly is connected with down-hole string.The utility model adopts high temperature nitrogen as heat transfer medium, adopt this kind of well washing system can in the situation that not affecting the normal production of oil well and other operation, obtain good wax removal, snaking, plugging removal effect, and to oil reservoir without injury, be conducive to improve oil well output, guarantee that oil well normally produces, also there is the advantages such as environmental protection and energy saving, running cost are low, flexible.This system also can be used for heavy oil wells, and the effect of playing viscosity reduction, the row of helping and improving oil well output, also can be used for the operations such as mining site ground Oil-Gas Gathering Transferring Pipeline pipeline purging de-plugging.
Description
Technical field
The utility model relates to a kind of heating power well washing system of removing oil well paraffinication, fouling, de-plugging and heavy oil wells viscosity reduction, the row of helping for oil exploitation process, belongs to oil production technology technology type.
Background technology
In oil exploitation oil well production process, particularly, in high waxy oil well, heavy oil wells manufacturing process, tubing wax, scale formation are very serious, and oil flow channel is diminished gradually, even block, and cause oil well output to reduce and even stop production.In the situation that there is serious wax deposition, fouling, because oil pipe internal pressure increases, also can increase the weight of the load of downhole pump, shorten the application life of oil well pump, affect oil well and normally produce.For above-mentioned phenomenon, the on-the-spot methods such as mechanical paraffin removal, paraffin removing with chemical method, heating power well-flushing that conventionally adopt are to paraffin removal from oil well de-plugging, to guarantee that oil well normally produces.Yet mechanical paraffin removal not only effect is not good enough, and affect oil well output, paraffin removing with chemical method cost is higher, and effect can not be satisfactory.Existing heating power well-washing wax-cleaning technology generally adopts boiler heat hot carrier, as deep fat, hot water etc. and bring heat energy into pit shaft by heat transfer medium, improves temperature in wellbore, makes its fusing point that surpasses wax, makes it to dissolve, thereby reaches the object of wax removal.Utilize deep fat as heat transfer medium high cost, the shortcoming of hot-water flooding well-flushing is that the thermal efficiency is low, and the flushing fluid of use is many, and the drainage period that drives a well is more than three days, and can damage sensitiveness oil reservoir.In addition, the equipment that this kind of wax removal de-plugging mode used is many, and energy consumption is high, and efficiency is low, and exhaust emission is large, large compared with high oil well operation difficulty for borehole pressure, and the difficulty of the high oil well of the content of wax and heavy oil wells wax removal being washed to dirt work is larger.Also have a kind ofly by burning, to produce the method that hot flue gases carrys out well-flushing, the waste gas producing due to its, to tubing and casing seriously corroded, is not used at present.
Utility model content
The utility model object is to provide that a kind of wax removal plugging removal effect is good, running cost is low, the oil well heat injection nitrogen well washing system to oil reservoir without injury.
The technical solution of the utility model is as follows.This kind of oil well heat injection nitrogen well washing system is comprised of nitrogen car group processed, nitrogen heater, connection manifold, wellhead assembly and down-hole string, nitrogen car group processed is connected with nitrogen heater, nitrogen heater is connected with wellhead assembly by connecting manifold, and wellhead assembly is connected with down-hole string.The high-purity nitrogen that nitrogen car group processed produces is heated to design temperature by heater, through connecting under manifold and well head Injection Well, the high-temperature gas producing continuously injects after oil sets annular space, and wax deposition and dirt are dissolved, and fade away, thereby reach the object that wax removal is washed dirty de-plugging.The temperature of nitrogen heating can be pressed removing paraffin and washing well technological requirement and be set or adjust between 50 ℃～350 ℃, and injection pressure also can change and regulate from 0～35MPa with down-hole pressure.Nitrogen after heating injects after oil sets annular space, heat transfer medium is discharged from oil pipe by oil well pump together with the well liquid of output, wax deposition and the high-melting-point dirt of heating flushing oil inside pipe wall, because oil pipe internal/external heating is good, not only wax removal plugging removal effect is good, and can wash while taking out, do not affect the normal production of oil well and other operations.
The utility model adopts high temperature nitrogen as heat transfer medium, compare and there is obvious advantage with boiler heating power wax removal with existing machinery wax removal, adopt this kind of well washing system can in the situation that not affecting the normal production of oil well and other operations, obtain good wax removal, scale removal, plugging removal effect, and to oil reservoir without injury, be conducive to improve oil well output, guarantee that oil well normally produces, also there is the advantages such as environmental protection and energy saving, running cost are low, flexible.Native system can also combine with Chemical Paraffin Removal & Control Techniques, and used chemical agent is dissolved in gasified water, with high-temperature gas mixture body, together under oil sets annular space Injection Well, improves clear wax control result; For heavy oil wells high temperature nitrogen can also with steam mixed water injection, the effect of playing viscosity reduction, the row of helping and improving oil well output, this system also can be used for ground Oil-Gas Gathering Transferring Pipeline pipeline purging de-plugging operation in addition.
Accompanying drawing explanation:
Fig. 1 is connection flow process general structure schematic diagram of the present utility model.Fig. 2 is the structural representation of nitrogen heater 2.
The specific embodiment:
The utility model is provided by following examples, below in conjunction with accompanying drawing, is explained.
As shown in the figure, the utility model is comprised of nitrogen car group 1 processed, nitrogen heater 2, connection manifold 3, wellhead assembly 4 and down-hole string 5, and its annexation as previously mentioned.Wherein, nitrogen car group processed 1 adopt vehicular Electric Drive membrane nitrogen device (patent No.: ZL201020198230.0), utilize it can be from air direct high-purity nitrogen, continuously produce high pressure nitrogen.Nitrogen heater 2 (seeing Fig. 2) is comprised of switch board 2-1, cable 2-2, heating furnace 2-3 and heating rod 2-4, heating rod 2-4 is placed in heating furnace 2-3, heating rod 2-4 outer end is connected with switch board 2-1 by cable 2-2, heating furnace 2-3 front and back ends is respectively equipped with high pressure nitrogen entrance and high pressure-temperature nitrogen outlet, and nitrogen heating-up temperature can be set on request or adjust between 50 ℃～350 ℃.Nitrogen heater 2 two ends by pipeline be connected manifold 3 and be connected with the sleeve pipe arrival end on wellhead assembly 4 with nitrogen car group 1 processed respectively.Production tree and down-hole pumping pipe string that wellhead assembly 4, down-hole string 5 are oil well to be adopted while normally producing.
Claims (3)
1. an oil well heat injection nitrogen well washing system, by nitrogen car group processed (1), nitrogen heater (2), connection manifold (3), wellhead assembly (4) and down-hole string (5), formed, it is characterized in that: nitrogen car group processed (1) is connected with nitrogen heater (2), nitrogen heater (2) is connected with wellhead assembly (4) by connecting manifold (3), and wellhead assembly (4) is connected with down-hole string (5).
2. oil well heat injection nitrogen well washing system according to claim 1, is characterized in that, nitrogen car group processed (1) adopts vehicular Electric Drive membrane nitrogen device.
3. oil well heat injection nitrogen well washing system according to claim 1, it is characterized in that, nitrogen heater (2) is comprised of switch board (2-1), cable (2-2), heating furnace (2-3) and heating rod (2-4), and heating furnace (2-3) front and back ends is respectively equipped with high pressure nitrogen entrance and high pressure-temperature nitrogen outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420121802.3U CN203978386U (en) | 2014-03-19 | 2014-03-19 | A kind of oil well heat injection nitrogen well washing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420121802.3U CN203978386U (en) | 2014-03-19 | 2014-03-19 | A kind of oil well heat injection nitrogen well washing system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203978386U true CN203978386U (en) | 2014-12-03 |
Family
ID=51975845
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420121802.3U Expired - Lifetime CN203978386U (en) | 2014-03-19 | 2014-03-19 | A kind of oil well heat injection nitrogen well washing system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203978386U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103821470A (en) * | 2014-03-19 | 2014-05-28 | 盘锦新科工贸有限公司 | Oil well hot nitrogen injection well washing technological method and system |
| CN107218012A (en) * | 2017-07-27 | 2017-09-29 | 中国石油集团渤海钻探工程有限公司 | A kind of hot N of Oil/gas Well2De-plugging process method and device |
| CN108119098A (en) * | 2017-11-15 | 2018-06-05 | 中国石油天然气集团公司 | Well-head wax removal device and method |
| CN108590603A (en) * | 2018-05-14 | 2018-09-28 | 克拉玛依市鑫众石油工程技术服务有限公司 | A kind of oil field special type special mobile formula superhigh temperature super-pressure complexes |
-
2014
- 2014-03-19 CN CN201420121802.3U patent/CN203978386U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103821470A (en) * | 2014-03-19 | 2014-05-28 | 盘锦新科工贸有限公司 | Oil well hot nitrogen injection well washing technological method and system |
| CN107218012A (en) * | 2017-07-27 | 2017-09-29 | 中国石油集团渤海钻探工程有限公司 | A kind of hot N of Oil/gas Well2De-plugging process method and device |
| CN108119098A (en) * | 2017-11-15 | 2018-06-05 | 中国石油天然气集团公司 | Well-head wax removal device and method |
| CN108119098B (en) * | 2017-11-15 | 2020-07-10 | 中国石油天然气集团公司 | Wellhead paraffin removal device and method |
| CN108590603A (en) * | 2018-05-14 | 2018-09-28 | 克拉玛依市鑫众石油工程技术服务有限公司 | A kind of oil field special type special mobile formula superhigh temperature super-pressure complexes |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: LIAONING XINKE PETROLEUM EQUIPMENT MACHINERY CO., Free format text: FORMER NAME: PANJIN XINKE INDUSTRIAL AND TRADING CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 124010 science and Technology Street, Xinglongtai Industrial Development Zone, Panjin, Liaoning Patentee after: LIAONING XINKE PETROLEUM EQUIPMENT MANUFACTURING Co.,Ltd. Address before: 124010 science and Technology Street, Xinglongtai Industrial Development Zone, Panjin, Liaoning Patentee before: XINKE DEVELOPMENT & MANUFACTURE Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20141203 |