CN1995697A - Oil reservoir fire-flooding thermal-ignition method - Google Patents
Oil reservoir fire-flooding thermal-ignition method Download PDFInfo
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- CN1995697A CN1995697A CN 200610134965 CN200610134965A CN1995697A CN 1995697 A CN1995697 A CN 1995697A CN 200610134965 CN200610134965 CN 200610134965 CN 200610134965 A CN200610134965 A CN 200610134965A CN 1995697 A CN1995697 A CN 1995697A
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Abstract
The invention relates to a thermal igniting method in fire-flooding oil recovery reservoir for ignition in fire-flooding oil recovery reservoir in oilfield and oil well. An active prying gas-steam generator system is used to burn diesel oil to generate mixed air with nitrogen air, carbon dioxide and water steam so on and a mass of heat energy by high-temperature high-pressure burning technology. When the burning temperature in gas-steam generator achieves 1800DEG C, temperature is fallen to 300-400DEG C by mixing water and the pressure is less than 25MPa. The mixed air injects into reservoir by wellhead equipment of oil well and injection tube. The mixed air with the temperature of 300-400DEG C and the cubage of 3-10*104Nm3 is injected to preheat the reservoir and air is injected in the well continuously. In reservoir, the crude oil and the air generate oxygenation to discharge heat. The self-burning point is achieved and burning happens so that the purpose of flooding by combustion. The method solves following problems that the heater is destroyed easily because of over high heating temperature in prior technology and the successful ignition by chemical method is low. The invention can be widely applied in ignition in fire-flooding oil recovery reservoir in oilfield and oil well.
Description
Technical field:
The present invention relates to a kind of a kind of oil reservoir fire-flooding thermal-ignition method of oilfield fire flood oil reservoir igniting usefulness.
Background technology:
Fire flood at present is one of displacement mode in the oil exploitation of oil field, utilizes in the oil reservoir crude oil to do fuel exactly and burns with the air that injects oil reservoir, produces heat, improves strata pressure, and formation crude oil is replaced to the shaft bottom.Fire flood oil reservoir ignition method having heaters method, combustion adjuvant chemical method and steam injection in the prior art.The heater method is to utilize cable that heater is sent into the air that heating is injected in the oil well, and the air that this method exists injection can not fully contact with heater, often produces air heat absorption inequality, causes the too high phenomenon that burns out heater of heter temperature sometimes; The combustion adjuvant chemical method 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 to the steam 300m of oil reservoir injection more than 350 ℃ by oil well steam injection tubing string
3, in well, injecting air, make oil reservoir reach self-ignition point and burn, but the oil field of inapplicable no steam injection condition.
Summary of the invention:
The object of the invention is to provide a kind of oil reservoir fire-flooding thermal-ignition method, and this method has solved the too high easy burn-out heater of the heating-up temperature that exists in the prior art, the very low problem of combustion adjuvant chemical method ignition success rate.
The technical solution adopted for the present invention to solve the technical problems is: the high-temperature gas mixture body that adopts gas-vapour generator to produce carries out the preheating igniting displacement of reservoir oil by the oil well injection string to oil reservoir.Oil reservoir heating substation ignition method involved in the present invention: employing activity skid-mounted type gas-vapour generator the complete sets of equipment at first, with high temperature, high-pressure combustion technology, mist and a large amount of heat energy such as the nitrogen that diesel combustion is produced, carbon dioxide and water vapour, at gas-when vapour generator internal combustion temperature reaches 1800 ℃, water mixing cools to 300～400 ℃, pressure injects by well mouth of oil well device and injection string mist less than 25MPa to oil reservoir; Inject 3-10 * 10
4Nm
3300～400 ℃ mist, the preheating oil reservoir injects air more continuously in well, make crude oil and air generation oxidation in oil reservoir, and heat release reaches self-ignition point, burns, and realizes the purpose of the combustion in situ displacement of reservoir oil.Oil reservoir fire-flooding thermal-ignition method is applicable to the well spacing method that the well pattern in existing oil field adopts, and a well injects many wells and recovers the oil; High-temperature gas mixture body implantation temperature is 300～400 ℃ during this method igniting, and injection pressure is less than 25MPa.
The specific embodiment:
Embodiment 1:
Oil reservoir fire-flooding thermal-ignition method is employing activity skid-mounted type gas-vapour generator the complete sets of equipment, with high temperature, high-pressure combustion technology, mist and a large amount of heat energy such as the nitrogen that diesel combustion is produced, carbon dioxide and water vapour, at gas-when vapour generator internal combustion temperature reaches 1800 ℃, water mixing cools to 300～400 ℃, pressure injects by well mouth of oil well device and injection string mist less than 25MPa to oil reservoir; Inject 3-10 * 10
4Nm
3300～400 ℃ mist, the preheating oil reservoir injects air more continuously in well, make crude oil and air generation oxidation in oil reservoir, and heat release reaches self-ignition point, burns, and realizes the purpose of the combustion in situ displacement of reservoir oil.
Embodiment 2:
Oil reservoir fire-flooding thermal-ignition method is applicable to the well spacing method that the well pattern in existing oil field adopts, and a well injects many wells and recovers the oil; Movable skid-mounted type gas-vapour generator the complete sets of equipment that this method adopted: output gas ability 1-3t/h, 300～400 ℃ of temperature, pressure is less than 25MPa; After oil reservoir is implemented igniting, can carry out detection to the microseism of air in the stratum and crude oil effect generation with this method, can judge the combustion range and the burning fingering direction on stratum by the injection gas front monitor of ground employing.
Claims (2)
1, a kind of oil reservoir fire-flooding thermal-ignition method, employing activity skid-mounted type gas-light a fire by the vapour generator device, the injection gas front monitor carries out ground monitoring; It is characterized in that: employing activity skid-mounted type gas-vapour generator the complete sets of equipment, with high temperature, high-pressure combustion technology, mist and a large amount of heat energy such as the nitrogen that diesel combustion is produced, carbon dioxide and water vapour, at gas-when vapour generator internal combustion temperature reaches 1800 ℃, water mixing cools to 300～400 ℃, pressure injects by well mouth of oil well device and injection string mist less than 25MPa to oil reservoir; Inject 3-10 * 10
4Nm
3300～400 ℃ mist, the preheating oil reservoir injects air more continuously in well, make crude oil and air generation oxidation in oil reservoir, and heat release reaches self-ignition point, burns, and realizes the purpose of the combustion in situ displacement of reservoir oil.
2, a kind of oil reservoir fire-flooding thermal-ignition method according to claim 1 is characterized in that: oil reservoir fire-flooding thermal-ignition method is applicable to the well spacing method that the well pattern in existing oil field adopts, and a well injects many wells and recovers the oil; Movable skid-mounted type gas-vapour generator the complete sets of equipment that this method adopted: output gas ability 1-3t/h, 300～400 ℃ of temperature, pressure is less than 25MPa; After oil reservoir is implemented igniting, can carry out detection to the microseism of air in the stratum and crude oil effect generation with this method, can judge the combustion range and the burning fingering direction on stratum by the injection gas front monitor of ground employing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101349655A CN100560935C (en) | 2006-12-18 | 2006-12-18 | A kind of oil reservoir fire-flooding thermal-ignition method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101349655A CN100560935C (en) | 2006-12-18 | 2006-12-18 | A kind of oil reservoir fire-flooding thermal-ignition method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1995697A true CN1995697A (en) | 2007-07-11 |
| CN100560935C CN100560935C (en) | 2009-11-18 |
Family
ID=38250871
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006101349655A Expired - Fee Related CN100560935C (en) | 2006-12-18 | 2006-12-18 | A kind of oil reservoir fire-flooding thermal-ignition method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100560935C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101864938A (en) * | 2010-03-23 | 2010-10-20 | 邓惠荣 | Underground ignition technology of combustion drive oil layer by injecting steam |
| RU2524580C1 (en) * | 2013-10-31 | 2014-07-27 | Открытое акционерное общество "Татнефть" им. В.Д. Шашина | Development of oil deposit by heat and water-gas impacts in vertical, horizontal and multihole wells system |
| CN113294133A (en) * | 2020-08-19 | 2021-08-24 | 中国石油天然气股份有限公司 | Method and system for determining fire flooding front edge in fire flooding well pattern |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1214989A (en) * | 1983-07-25 | 1986-12-09 | Billy G. Holmes | Steam ignition and control of an oxygen-driven fire flood injection well |
| US6016867A (en) * | 1998-06-24 | 2000-01-25 | World Energy Systems, Incorporated | Upgrading and recovery of heavy crude oils and natural bitumens by in situ hydrovisbreaking |
| US6357526B1 (en) * | 2000-03-16 | 2002-03-19 | Kellogg Brown & Root, Inc. | Field upgrading of heavy oil and bitumen |
| RU2223398C1 (en) * | 2002-05-07 | 2004-02-10 | ОАО "Всероссийский нефтегазовый научно-исследовательский институт" им. акад. А.П. Крылова | Process of recovery of viscous oil or bitumen from formation |
| CN2550501Y (en) * | 2002-06-13 | 2003-05-14 | 杨正文 | Mixed gas injection device for petroleum thermal recovery |
| CN1483919A (en) * | 2002-09-20 | 2004-03-24 | 吴锦标 | Mixed gas injection thermal recovery technology |
| NO20033230D0 (en) * | 2003-07-16 | 2003-07-16 | Statoil Asa | Procedure for oil recovery and upgrading |
| CN100344855C (en) * | 2005-12-21 | 2007-10-24 | 尤尼斯油气技术（中国）有限公司 | Fire flooding process for thick oil extraction |
| CN100343478C (en) * | 2005-12-23 | 2007-10-17 | 江苏大江石油科技有限公司 | High-temperature high-pressure combustion system of sub-critical composite heat carrier generator |
-
2006
- 2006-12-18 CN CNB2006101349655A patent/CN100560935C/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101864938A (en) * | 2010-03-23 | 2010-10-20 | 邓惠荣 | Underground ignition technology of combustion drive oil layer by injecting steam |
| CN101864938B (en) * | 2010-03-23 | 2014-04-09 | 邓惠荣 | Underground ignition technology of combustion drive oil layer by injecting steam |
| RU2524580C1 (en) * | 2013-10-31 | 2014-07-27 | Открытое акционерное общество "Татнефть" им. В.Д. Шашина | Development of oil deposit by heat and water-gas impacts in vertical, horizontal and multihole wells system |
| CN113294133A (en) * | 2020-08-19 | 2021-08-24 | 中国石油天然气股份有限公司 | Method and system for determining fire flooding front edge in fire flooding well pattern |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100560935C (en) | 2009-11-18 |
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