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中国石油勘探  2018, Vol. 23 Issue (5): 65-72    DOI: 10.3969/j.issn.1672-7703.2018.05.008
  石油地质 本期目录 | 过刊浏览 | 高级检索 |
CO2在准噶尔盆地昌吉油田吉7井区稠油中的溶解性研究
高敬善1, 但顺华1, 杨涛1, 张小红1, 岳红星1, 于岐2
1 中国石油新疆油田公司准东采油厂;
2 克拉玛依华信能源技术服务有限公司
Study on CO2 solubility in heavy oil in Well Ji7, Changji oilfield, Junggar Basin
Gao Jingshan1, Dan Shunhua1, Yang Tao1, Zhang Xiaohong1, Yue Hongxing1, Yu Qi2
1 Zhundong Oil Production Plant, PetroChina Xinjiang Oilfield Company;
2 Karamay Huaxin Energy Technology Service Co. Ltd.
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摘要 为论证CO2驱油技术在准噶尔盆地昌吉油田吉7井区稠油开发中的可行性,开展了原油注CO2膨胀实验及细管驱替实验,以研究CO2在研究区稠油中的溶解特性。实验结果表明:①在目前16.41MPa地层压力的条件下,当CO2注入比例达到50mol/mol时可使原油黏度降低42.3%~66.7%,原油密度由0.9011g/cm3降低至0.8428g/cm3,体积系数增大20%,原油膨胀系数增加至1.13~1.24,气油比增加6.3~8倍,饱和压力增大140%~306%;②随注入压力提高,地层原油采收率不断增加,气体突破较晚,当注入压力为45MPa时,地层原油采收率为46.68%,表现为非混相驱特征;③实验结果表明CO2对研究区稠油具有很好的降黏和膨胀作用,表明CO2非混相驱油技术适用于研究区特深层稠油油藏开发。
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高敬善
但顺华
杨涛
张小红
岳红星
于岐
关键词 昌吉油田稠油CO2驱油细管驱替实验    
Abstract:To demonstrate the feasibility of CO2 flooding development of the heavy reservoirs in Well Ji7 of Changji oilfield in the Junggar Basin, experiments on injecting CO2 into crude oil and slim-tube displacement were carried out to investigate the solubility of CO2 in heavy oil. The experiment results proved that:(1) When injecting CO2 at 50mol/mol at present 16.41MPa underground pressure, the viscosity of the crude oil was reduced by 42.3%-66.7%, the density was reduced from 0.9011g/cm3 to 0.8428 g/cm3, the volume factor was increased by 20%, the expansion factor was increased to 1.13-1.24, the gas-to-oil ratio increased by 6.3-8 times, and the saturation pressure increased by 140%-306%. (2) The oil recovery increased with injection pressure, and gas breakthrough was delayed. When the injection pressure was 45MPa, the oil recovery was 46.68%, and non-miscible displacement worked. (3) CO2 effectively reduced the viscosity and made the crude oil expand in the study area. All these results above show that CO2 flooding technology is effective for the development of deep heavy oil reservoirs in the study area.
Key wordsChangji oilfield    heavy oil    CO2 flooding    slim-tube displacement experiment
收稿日期: 2017-08-25      出版日期: 2018-09-15
ZTFLH:     
基金资助:中国石油天然气股份有限公司重大科技专项“新疆油田浅层稠油稳产提效技术研究与应用”(2017E-0408)。
引用本文:   
高敬善, 但顺华, 杨涛, 张小红, 岳红星, 于岐. CO2在准噶尔盆地昌吉油田吉7井区稠油中的溶解性研究[J]. 中国石油勘探, 2018, 23(5): 65-72.
Gao Jingshan, Dan Shunhua, Yang Tao, Zhang Xiaohong, Yue Hongxing, Yu Qi. Study on CO2 solubility in heavy oil in Well Ji7, Changji oilfield, Junggar Basin. China Petroleum Exploration, 2018, 23(5): 65-72.
链接本文:  
http://www.cped.cn/CN/10.3969/j.issn.1672-7703.2018.05.008      或      http://www.cped.cn/CN/Y2018/V23/I5/65
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