CN101539011B - Fire flood eclectic ignition device - Google Patents
Fire flood eclectic ignition device Download PDFInfo
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- CN101539011B CN101539011B CN2009100113649A CN200910011364A CN101539011B CN 101539011 B CN101539011 B CN 101539011B CN 2009100113649 A CN2009100113649 A CN 2009100113649A CN 200910011364 A CN200910011364 A CN 200910011364A CN 101539011 B CN101539011 B CN 101539011B
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Abstract
The invention relates to a fire flood eclectic ignition method. An ignition device adopted by the fire flood eclectic ignition method comprises a steam injection pipe column and an ignition system, wherein the steam injection pipe column comprises a flare opening, a check valve, a bracket, an oil pipe and a wellhead device from top to bottom; the electric ignition system comprises a ground part and an underground part, wherein the ground part comprises an intermediate frequency power supply control cabinet, a loop cable, a cable conductor and a cable sealer, and the underground part comprisesa conductor, an igniter, an insulated centralizer, a screen pipe, the cable conductor, an insulated isolation wire connector and the cable conductor from bottom to top. The fire flood eclectic ignition method is easy to operate, the ignition device has high maneuverability, repeatable use, controllable temperature and uniform heating temperature, and fire flood eclectic ignition can obtain good effect by utilizing the ignition device.
Description
Technical field:
The present invention relates to a kind of fire flood eclectic ignition device that is used for the viscous crude heating exploitation, belong to the thickened oil recovery technology type.
Background technology:
In viscous crude heating exploitation process, since the viscosity of thickened oil height, the exploitation of the general cyclic steam stimulation method of employing earlier, the main method that the later stage adopts has methods such as steam flooding, fireflood, compares with steam flooding, and fire flood also has the advantage of oneself.The characteristics of steam drive oil production are that reaction is fast, but input expense height, the life-span is short, and a large amount of steam in jections can drive non-movable oil, but needs higher equipment investment, higher running cost and complex apparatus.The characteristics of fire flood be begin reaction slowly, expense is low, the life-span is long, provides heat because it is a fuel in the dependence oil reservoir, has tangible technical characterstic.The technology level of comprehensive fire flood both at home and abroad, the fire flood technology has three links that technology content is higher, and promptly burning and control burning direction are lighted a fire, kept to oil reservoir.At present, the oil reservoir ignition method has three kinds of electric heater method, chemical method and steam injection.Wherein, the chemical point pyrogenic process carries out heat to oil reservoir and drives, though succeed, for heavy crude reservoir, ignition success rate is very low; The steam injection methods of printing is by the steam 300m of oil well injection more than 350 ℃
3, in well, inject air again, reaching threshold temperature needs the long period.In the prior art, what electric heater method ignition process tubing string [ZL 00267279.0] was described is to utilize the tubing transmission method that electric heater is sent in the oil well, be lowered to the air that the heating of cable conductor butt joint electric heater is injected then, this process pipe string is under the oil pipe lower going-into-well, in case electric heater damages, again workover treatment, and cable conductor butt joint difficulty.
Summary of the invention:
The invention reside in provides a kind of ignition system can not produce the intact fire of hot-spot phenomenon, mobility strong, point can to trip out pit shaft and reuse and adaptable fire flood eclectic ignition device.
Technical scheme of the present invention is as follows.This kind fire flood eclectic ignition device comprises gas injection tubing string and ignition system two parts, the gas injection tubing string is made up of horn mouth, ball-and-seat, bracket, oil pipe, wellhead assembly from the bottom to top, wherein, horn mouth is positioned at gas injection well section middle part, upper end and ball-and-seat screwed connection; The circulating direction of ball-and-seat is from top to bottom to be communicated with, and oppositely closes, and its effect is to prevent that liquid pours in down a chimney to oil pipe top and bracket screwed connection in the well; Bracket top is angle, and internal diameter plays the effect that conductor circuit is communicated with, holds electric ignition system and axially be communicated with igniter less than the conductor external diameter; Bracket upper end and oil pipe screwed connection.Electric ignition system comprises ground, down-hole two parts.Above ground portion is made up of power control pod with middle frequency, return cable, first cable conductor and cable seal device, and its effect is that electric current is delivered to the down-hole electric ignition system.The down-hole part isolates electric wire connecting junction by conductor, igniter, insulation centralizer, screen casing, second cable conductor, insulation from the bottom to top and the 3rd cable conductor is formed: conductor and igniter, insulation centralizer, screen casing, the 3rd cable conductor, insulation are isolated electric wire connecting junction and are made into one, conductor is positioned at the igniter lower end, igniter lower end bell is sitting on the bracket angle, form the contact of frustum face, both blocks air circulations form current loop again; The insulation centralizer is positioned at the igniter middle and upper part, avoids igniter to contact with oil pipe, plays the isolated insulation effect and avoids being short-circuited; Second cable conductor is positioned at the screen casing outside, to record method tie point firearm, insulation isolation electric wire connecting junction; Insulation is isolated electric wire connecting junction and is positioned at screen casing top, and be connected with drawing method with the 3rd cable conductor and or.In the construction operation process, earlier by working design with the gas injection tubing string in pit shaft, and seated wellhead assembly; Electric ignition system down-hole part is put into oil pipe by working rig, cylinder cable car, be seated on the bracket, the above ground portion of electric ignition system is installed again.After the fire flood igniting is finished, utilize crane, cylinder cable car that electric ignition system down-hole part is tripped out and get final product.Ignition operation and oil production technology process are as follows: by the four-way of ground air compressor by wellhead assembly air is injected the down-hole, air via screen casing inlet point firearm inner chamber, enters oil reservoir by one way valve by oil pipe again; The control power control pod with middle frequency is sent into insulation with electric current through cable conductor and is isolated in the electric wire connecting junction, then by cable conductor inlet point firearm, forms power circuit through conductor and oil pipe.In galvanization, the air heat to 450 that the heating of heating original paper will be flowed through in the igniter is ℃ more than the temperature, air draught injects the stratum under the effect of ground pressure, with the crude oil generation oxidation reaction in the stratum, produce a large amount of heat energy, viscosity of crude in the stratum is reduced, and flow in the production well, by pumping unit oily stream is lifted to the ground extraction again.
Fire flood eclectic ignition method provided by the invention is easy to implement, and the igniter mobility strong that is adopted is reusable, and Controllable Temperature, and the heating-up temperature equilibrium utilizes it can guarantee that the fireflood igniting obtains good result.
Description of drawings: ignition device structure and process flow diagram that accompanying drawing adopts for the present invention.
The specific embodiment:
As shown in the figure, the igniter of the present invention's employing is isolated electric wire connecting junction 12, oil pipe 14, return cable 15 and power control pod with middle frequency 16 and is formed by cable conductor 1,11,13, cable seal device 2, wellhead assembly 3, screen casing 4, insulation centralizer 5, igniter 6, conductor 7, horn mouth 8, ball-and-seat 9, bracket 10, insulation.Wherein, horn mouth 8, ball-and-seat 9, bracket 10, oil pipe 14, wellhead assembly 3 constitute the gas injection tubing string, the electric ignition system above ground portion is made up of power control pod with middle frequency 16, return cable 15, cable conductor 1 and cable seal device 2, and the down-hole part is made up of conductor 7, igniter 6, insulation centralizer 5, screen casing 4, insulation isolation electric wire connecting junction 12 and cable conductor 11,13.
Claims (2)
1. fire flood eclectic ignition device, it is characterized in that: the igniter of employing comprises gas injection tubing string and ignition system two parts, the gas injection tubing string is made up of horn mouth (8), ball-and-seat (9), bracket (10), oil pipe (14), wellhead assembly (3) from the bottom to top, wherein, horn mouth (8) is positioned at gas injection well section middle part, upper end and ball-and-seat (9) screwed connection; The circulating direction of ball-and-seat (9) is from top to bottom to be communicated with, and oppositely closes, and its effect is to prevent that liquid pours in down a chimney to oil pipe top and bracket (10) screwed connection in the well; Bracket (10) top is angle, and internal diameter plays the effect that conductor circuit is communicated with, holds electric ignition system and axially be communicated with igniter (16) less than conductor (7) external diameter; Bracket (10) upper end and oil pipe (14) screwed connection; Electric ignition system comprises ground, down-hole part, and above ground portion is made up of power control pod with middle frequency (16), return cable (15), first cable conductor (1) and cable seal device (2), and its effect is that electric current is delivered to the down-hole electric ignition system; The down-hole part is made up of conductor (7), igniter (6), insulation centralizer (5), screen casing (4), second cable conductor (11), insulation isolation electric wire connecting junction (12) and the 3rd cable conductor (13) from the bottom to top; Conductor (7) is isolated electric wire connecting junction (12) and is made into one with igniter (6), insulation centralizer (5), screen casing (4), the 3rd cable conductor (13), insulation, conductor (7) is positioned at igniter (6) lower end, igniter (6) lower end bell is sitting on bracket (10) angle, form the contact of frustum face, both blocks air circulations form current loop again; Insulation centralizer (5) is positioned at igniter (6) middle and upper part, avoids igniter (6) to contact with oil pipe (14), plays the isolated insulation effect, avoids being short-circuited; Second cable conductor (11) is positioned at screen casing (4) outside, to record method tie point firearm (6), insulation isolation electric wire connecting junction (12); Insulation is isolated electric wire connecting junction (12) and is positioned at screen casing (4) top, and is formed by connecting with drawing method with the 3rd cable conductor (13).
2. a kind of fire flood eclectic ignition device according to claim 1, it is characterized in that, the process of ignition operation and oil production technology is as follows: by the four-way of ground air compressor by wellhead assembly air is flowed into the down-hole, air via screen casing inlet point firearm inner chamber, enters oil reservoir by one way valve by oil pipe again; The control power control pod with middle frequency is sent into insulation with electric current through cable conductor and is isolated in the electric wire connecting junction, then by cable conductor inlet point firearm, forms power circuit through conductor and oil pipe; In galvanization, the air heat to 450 that the heating of heating original paper will be flowed through in the igniter is ℃ more than the temperature, air draught injects the stratum under the effect of ground pressure, with the crude oil generation oxidation reaction in the stratum, produce a large amount of heat energy, viscosity of crude in the stratum is reduced, and flow in the production well, by pumping unit oily stream is lifted to the ground extraction again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100113649A CN101539011B (en) | 2009-04-30 | 2009-04-30 | Fire flood eclectic ignition device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100113649A CN101539011B (en) | 2009-04-30 | 2009-04-30 | Fire flood eclectic ignition device |
Publications (2)
| Publication Number | Publication Date |
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| CN101539011A CN101539011A (en) | 2009-09-23 |
| CN101539011B true CN101539011B (en) | 2010-09-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100113649A Expired - Fee Related CN101539011B (en) | 2009-04-30 | 2009-04-30 | Fire flood eclectic ignition device |
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| CN (1) | CN101539011B (en) |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102094615A (en) * | 2010-12-17 | 2011-06-15 | 中国石油集团长城钻探工程有限公司 | Coal bed gas horizontal well thermal sieve tube well completion method |
| CN102080524B (en) * | 2010-12-22 | 2013-04-17 | 中国石油天然气集团公司 | Layered electric ignition method for multilayer gas injection of fire flood |
| CN102352745A (en) * | 2011-10-25 | 2012-02-15 | 联合石油天然气投资有限公司 | Removable electric ignition device for in-situ combustion and application method thereof |
| CN102979493B (en) * | 2012-12-04 | 2015-04-15 | 尤尼斯油气技术（中国）有限公司 | Gas injection system for combustion of oil in-situ under super-critical pressure and gas injection method thereof |
| CN103573232B (en) * | 2013-11-01 | 2019-06-18 | 栾天 | Secondary steam heats pressurization directly spray device |
| CN103953321B (en) * | 2014-04-02 | 2016-08-31 | 中国石油天然气股份有限公司 | Inclined shaft combustion in situ continuous pipe electric ignition tubing string and ignition method |
| CN104453817B (en) * | 2014-10-29 | 2017-02-15 | 中国石油天然气股份有限公司 | In-situ combustion combustion-supporting ignition method |
| CN104533366B (en) * | 2014-10-29 | 2017-01-11 | 中国石油天然气股份有限公司 | Profile control channeling blocking method and device used in oil exploitation |
| CN105239982B (en) * | 2015-09-22 | 2017-10-17 | 中国石油天然气股份有限公司 | The method and apparatus of air requirements amount during a kind of determination combustion in situ |
| CN106918053B (en) * | 2015-12-24 | 2022-12-02 | 中国石油天然气股份有限公司 | Ignition device for oil field exploitation and oil field exploitation method |
| CN106194139B (en) * | 2016-07-08 | 2018-10-16 | 中国石油天然气股份有限公司 | The ignition method of combustion in situ |
| CN106121619B (en) * | 2016-08-24 | 2019-01-08 | 中为(上海)能源技术有限公司 | Ignition installation and its application for Underground Coal Gasification Process |
| CN106837282B (en) * | 2016-12-13 | 2018-12-25 | 中国石油天然气股份有限公司 | Igniter, igniter and ignition method |
| CN109723417A (en) * | 2019-01-07 | 2019-05-07 | 中国海洋石油集团有限公司 | A kind of recovery method turning fireflood suitable for oil-sand SAGD development late stage |
| CN113622860B (en) * | 2020-05-08 | 2023-07-25 | 中国石油天然气股份有限公司 | Fire drives cable packer and fire drives monitoring tubular column |
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2009
- 2009-04-30 CN CN2009100113649A patent/CN101539011B/en not_active Expired - Fee Related
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| CN101539011A (en) | 2009-09-23 |
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