CN1465847A - Crude oil is mined by adopting a mode of firstly burning oil layer and then driving by steam - Google Patents
Crude oil is mined by adopting a mode of firstly burning oil layer and then driving by steam Download PDFInfo
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- CN1465847A CN1465847A CNA021237786A CN02123778A CN1465847A CN 1465847 A CN1465847 A CN 1465847A CN A021237786 A CNA021237786 A CN A021237786A CN 02123778 A CN02123778 A CN 02123778A CN 1465847 A CN1465847 A CN 1465847A
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- situ
- combustion
- steam
- crude oil
- steam flooding
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- 239000003921 oil Substances 0.000 title claims abstract description 14
- 239000010779 crude oil Substances 0.000 title claims abstract description 13
- 238000002485 combustion reaction Methods 0.000 claims abstract description 26
- 238000011065 in-situ storage Methods 0.000 claims abstract description 26
- 238000010795 Steam Flooding Methods 0.000 claims abstract description 23
- 238000000034 method Methods 0.000 claims abstract description 9
- 238000002347 injection Methods 0.000 claims abstract description 5
- 239000007924 injection Substances 0.000 claims abstract description 5
- 238000000605 extraction Methods 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 238000010793 Steam injection (oil industry) Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 5
- 239000000295 fuel oil Substances 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000003643 water by type Substances 0.000 description 2
- 238000003915 air pollution Methods 0.000 description 1
- 230000005465 channeling Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000004945 emulsification Methods 0.000 description 1
- 238000001802 infusion Methods 0.000 description 1
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Abstract
A method for exploiting crude oil by means of in-situ combustion and then steam flooding for the exploitation of deep heavy oil reservoir includes such steps as injecting air into oil layer via central injection well, igniting the oil layer, and in-situ combustion. Therefore, the oil burning process and the steam flooding process can achieve ideal effects.
Description
Relate to the field
The present invention is applicable to the exploitation of burying dark heavy crude reservoir, specifically, is steam flooding mode crude oil extraction behind the first combustion in situ of employing.
Background technology
When at present used independent enforcement combustion in situ and steam flooding, all there are pluses and minuses separately in this dual mode, combustion in situ in the initial stage leading edge development of implementing evenly, the oil displacement efficiency height, a series of problems such as the middle and later periods air insufficient infusion, has channeling can occur, shake out, too high, the strong emulsification of burn into temperature and air pollution.The advantage of steam flooding is that the high displacing front of oil displacement efficiency is stable, and not high enough owing to mass dryness fraction in the practical operation, can hold any more too much condensed water in the vapor chamber, and a large amount of condensed waters enter the downstream and cause fingering and form passage, have influenced vapour and have driven effect.
Because the most of heavy crude reservoir of China buries darker, when implementing steam flooding, steam quality is low because pit shaft dispels the heat, side by side the stressor layer height, the vapor chamber diffusion is slow, condensed water can occur and break through, cause water breakthrough very soon, influence the steam flooding effect, and it is also unrealistic to implement combustion in situ separately, because China's heavy crude reservoir thickness is big, the air onlap of combustion in situ will make and finally vertically involve the rate reduction, and required air compressor machine quantity also is difficult to satisfy.
Technology contents
The object of the present invention is to provide a kind of can make combustion in situ and steam flooding all be under the optimum state operation and all reach the employing elder generation combustion in situ of ideal effect separately after steam flooding mode crude oil extraction.
Oil production technology of the present invention is, at first at the centerwell air injection of 5 or 7 or 9 well groups and light oil reservoir, carrying out the combustion in situ mode develops, after the time of determining combustion in situ reaches requirement, the original annotation air well changes steam injection into, beginning steam drive development process is up to the concluding time, and the producing well of well group carries out crude oil production all the time.
The present invention also adopts following technical scheme:
The time of described combustion in situ is 1～2 year.
Reach requirement and be meant that the underground heat that accumulates is 4 * 10
10More than the kilojoule.
Concluding time is meant that the steam flooding leading edge is in producing well 10～20m scope.
Advantage of the present invention is, combustion in situ in the initial stage leading edge development of implementing evenly, the oil displacement efficiency height, after carrying out the certain phase combustion in situ, the pressure of oil reservoir reduces, temperature raises, and has accumulated a large amount of heat (these heat are the latent heat of steam quite) in the zone of having burnt, and has formed the voids volume that soars in a large number.This part heat can greatly improve steam quality, and the hole that soars can hold a large amount of condensed waters.The vapor chamber expansion rate is accelerated, reduced condensed water and enter the downstream, avoid forming the fingering passage.Therefore, combustion in situ and steam flooding process all can reach desirable effect.
Description of drawings
Fig. 1 is the schematic diagram of steam flooding mode crude oil extraction behind the first combustion in situ of employing.
Concrete enforcement
At first inject well to the oil reservoir air injection and light oil reservoir by the center, the development process in beginning combustion in situ stage, the combustion in situ exploitation arrives 1～2 year scheduled time, makes the underground heat that accumulates reach about 4 * 10
10After the kilojoule, stop air injection, change into by the center and inject well to the oil reservoir steam injection, beginning steam drive development process up to the steam flooding leading edge in producing well 10～20m scope, i.e. Yu Ding steam flooding concluding time.Producing well carries out crude oil production all the time in overall process.
Claims (4)
1. adopt steam flooding mode crude oil extraction behind the first combustion in situ, it is characterized in that: at first at the centerwell air injection of 5 or 7 or 9 well groups and light oil reservoir, carrying out the combustion in situ mode develops, after the time of determining combustion in situ reaches requirement, the original annotation air well changes steam injection into, beginning steam drive development process is up to the concluding time, and the producing well of well group carries out crude oil production all the time.
2. steam flooding mode crude oil extraction behind the first combustion in situ of employing according to claim 1 is characterized in that: the time of described combustion in situ is 1～2 year.
3. steam flooding mode crude oil extraction behind the first combustion in situ of employing according to claim 1 is characterized in that: describedly reach requirement and be meant that the underground heat that accumulates is 4 * 10
10More than the kilojoule.
4. steam flooding mode crude oil extraction behind the first combustion in situ of employing according to claim 1 is characterized in that: the concluding time is meant that the steam flooding leading edge is in producing well 10～20m scope.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA021237786A CN1465847A (en) | 2002-06-28 | 2002-06-28 | Crude oil is mined by adopting a mode of firstly burning oil layer and then driving by steam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA021237786A CN1465847A (en) | 2002-06-28 | 2002-06-28 | Crude oil is mined by adopting a mode of firstly burning oil layer and then driving by steam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1465847A true CN1465847A (en) | 2004-01-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA021237786A Pending CN1465847A (en) | 2002-06-28 | 2002-06-28 | Crude oil is mined by adopting a mode of firstly burning oil layer and then driving by steam |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1465847A (en) |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN100398779C (en) * | 2006-04-17 | 2008-07-02 | 尤尼斯油气技术（中国）有限公司 | Hot air filling balance oil recovery technique 'zhanqian' mountain oil reservoir |
| CN101864938A (en) * | 2010-03-23 | 2010-10-20 | 邓惠荣 | Underground ignition technology of combustion drive oil layer by injecting steam |
| CN101161988B (en) * | 2006-10-09 | 2011-07-06 | 北京联众易盛石油开采新技术发展有限公司 | In situ combustion slug and steam driving combined type crude oil producing method |
| CN102359365A (en) * | 2011-09-06 | 2012-02-22 | 中国石油天然气股份有限公司 | Oil extraction method for injecting high-temperature steam into oil layer to initiate hydrothermal exothermic reaction |
| CN102758603A (en) * | 2012-07-10 | 2012-10-31 | 中国石油天然气股份有限公司 | Super heavy oil reservoir SAGD exploitation later-period air injection exploitation method |
| CN102767356A (en) * | 2012-08-08 | 2012-11-07 | 张方礼 | Method for using combustion and vapor combination flooding to exploit thick oil |
| CN103334724A (en) * | 2013-06-03 | 2013-10-02 | 中国石油天然气股份有限公司 | Method for exploiting oil reservoir by nano-magnetofluid displacement and well pattern structure thereof |
| CN103410489A (en) * | 2013-08-14 | 2013-11-27 | 东北石油大学 | Modification and viscosity reduction method for in-situ combustion heavy oil recovery |
| CN103912252A (en) * | 2014-03-13 | 2014-07-09 | 中国石油大学(北京) | Wet type combustion huff-puff oil extraction method |
| CN103917744A (en) * | 2011-10-24 | 2014-07-09 | 尼克森能源无限责任公司 | Steam flooding with oxygen injection, and cyclic steam stimulation with oxygen injection |
| CN106089163A (en) * | 2016-08-01 | 2016-11-09 | 中嵘能源科技集团有限公司 | A kind of steam injection associating air injection and production gas well gas fire huff and puff oil recovery method |
| CN107339089A (en) * | 2017-09-13 | 2017-11-10 | 北京军秀咨询有限公司 | A kind of combustion in situ slug adds the method that steam drives combined type crude oil producing |
| CN113250666A (en) * | 2020-02-11 | 2021-08-13 | 中国石油天然气股份有限公司 | Shallow heavy oil reservoir burning auxiliary steam huff and puff exploitation method |
-
2002
- 2002-06-28 CN CNA021237786A patent/CN1465847A/en active Pending
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN100398779C (en) * | 2006-04-17 | 2008-07-02 | 尤尼斯油气技术（中国）有限公司 | Hot air filling balance oil recovery technique 'zhanqian' mountain oil reservoir |
| CN101161988B (en) * | 2006-10-09 | 2011-07-06 | 北京联众易盛石油开采新技术发展有限公司 | In situ combustion slug and steam driving combined type crude oil producing method |
| CN101864938B (en) * | 2010-03-23 | 2014-04-09 | 邓惠荣 | Underground ignition technology of combustion drive oil layer by injecting steam |
| CN101864938A (en) * | 2010-03-23 | 2010-10-20 | 邓惠荣 | Underground ignition technology of combustion drive oil layer by injecting steam |
| CN102359365B (en) * | 2011-09-06 | 2015-02-25 | 中国石油天然气股份有限公司 | Oil extraction method for injecting high-temperature steam into oil layer to initiate hydrothermal exothermic reaction |
| CN102359365A (en) * | 2011-09-06 | 2012-02-22 | 中国石油天然气股份有限公司 | Oil extraction method for injecting high-temperature steam into oil layer to initiate hydrothermal exothermic reaction |
| CN103917744A (en) * | 2011-10-24 | 2014-07-09 | 尼克森能源无限责任公司 | Steam flooding with oxygen injection, and cyclic steam stimulation with oxygen injection |
| CN102758603A (en) * | 2012-07-10 | 2012-10-31 | 中国石油天然气股份有限公司 | Super heavy oil reservoir SAGD exploitation later-period air injection exploitation method |
| CN102767356A (en) * | 2012-08-08 | 2012-11-07 | 张方礼 | Method for using combustion and vapor combination flooding to exploit thick oil |
| CN102767356B (en) * | 2012-08-08 | 2015-05-27 | 张方礼 | Method for using combustion and vapor combination flooding to exploit thick oil |
| CN103334724A (en) * | 2013-06-03 | 2013-10-02 | 中国石油天然气股份有限公司 | Method for exploiting oil reservoir by nano-magnetofluid displacement and well pattern structure thereof |
| CN103334724B (en) * | 2013-06-03 | 2015-09-09 | 中国石油天然气股份有限公司 | Method for exploiting oil reservoir by nano-magnetofluid displacement and well pattern structure thereof |
| CN103410489A (en) * | 2013-08-14 | 2013-11-27 | 东北石油大学 | Modification and viscosity reduction method for in-situ combustion heavy oil recovery |
| CN103912252A (en) * | 2014-03-13 | 2014-07-09 | 中国石油大学(北京) | Wet type combustion huff-puff oil extraction method |
| CN106089163A (en) * | 2016-08-01 | 2016-11-09 | 中嵘能源科技集团有限公司 | A kind of steam injection associating air injection and production gas well gas fire huff and puff oil recovery method |
| CN107339089A (en) * | 2017-09-13 | 2017-11-10 | 北京军秀咨询有限公司 | A kind of combustion in situ slug adds the method that steam drives combined type crude oil producing |
| CN113250666A (en) * | 2020-02-11 | 2021-08-13 | 中国石油天然气股份有限公司 | Shallow heavy oil reservoir burning auxiliary steam huff and puff exploitation method |
| CN113250666B (en) * | 2020-02-11 | 2022-06-03 | 中国石油天然气股份有限公司 | Shallow heavy oil reservoir burning auxiliary steam huff and puff exploitation method |
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