中深层稠油油藏化学辅助蒸汽驱三维物理模拟与应用

doi:10.7623/syxb201404015

石油学报 ›› 2014, Vol. 35 ›› Issue (4): 739-744.DOI: 10.7623/syxb201404015

中深层稠油油藏化学辅助蒸汽驱三维物理模拟与应用

曹嫣镔^1,2, 刘冬青², 王善堂², 于田田², 张仲平²

1. 中国石油大学化学工程学院山东青岛 266580;
2. 中国石油化工股份有限公司胜利油田分公司采油工艺研究院山东东营 257000

收稿日期:2014-02-11 修回日期:2014-05-22 出版日期:2014-07-25 发布日期:2014-08-05
通讯作者: 曹嫣镔，男，1975年5月生，1996年毕业于山东工业大学，现为中国石油大学（华东）化学工程学院博士研究生、中国石油化工股份有限公司胜利油田分公司采油工艺研究院高级工程师，主要从事稠油开采技术研究工作。Email：caoyanbinmengjiao@sina.com
作者简介:曹嫣镔，男，1975年5月生，1996年毕业于山东工业大学，现为中国石油大学（华东）化学工程学院博士研究生、中国石油化工股份有限公司胜利油田分公司采油工艺研究院高级工程师，主要从事稠油开采技术研究工作。Email：caoyanbinmengjiao@sina.com
基金资助:
国家重大科技专项（2011ZX05011-002）资助。

Three-dimensional physical simulation and application of chemistry assistant steam flooding on middle and deep heavy oil reservoir

Cao Yanbin^1,2, Liu Dongqing², Wang Shantang², Yu Tiantian², Zhang Zhongping²

1. College of Chemical Engineering, China University of Petroleum, Shandong Qingdao 266580, China;
2. Oil Production Research Institute, Sinopec Shengli Oilfield Company, Shandong Dongying 257000, China

Received:2014-02-11 Revised:2014-05-22 Online:2014-07-25 Published:2014-08-05

摘要/Abstract

摘要：

胜利油田稠油油藏由于埋深和边底水的影响，油藏压力无法降低到5 MPa以下再进行蒸汽驱，一般转驱压力为7 MPa。为进一步提高蒸汽驱的实施效果，利用室内实验研究了化学辅助驱方式进一步提高采收率。以胜利油田孤岛油田Ng5层位直井反九点井网为原型开展物理模拟研究。通过对比单纯蒸汽驱、化学辅助蒸汽驱等不同方式提高采收率的幅度，对泡沫剂、驱油剂不同注入方式进行对比分析，并确定现场实施方式。室内实验研究结果表明：采用“先调后驱”的化学辅助蒸汽驱方式，可以在蒸汽驱的基础上进一步提高采收率；高温驱油剂的主要作用是提高蒸汽前沿热水带洗油效率，高温泡沫的主要作用是调整蒸汽剖面，增加波及体积，提高热利用率。现场实际应用表明，化学辅助蒸汽驱是高压稠油油藏转蒸汽驱可行的开发方式。

关键词: 稠油油藏, 化学辅助蒸汽驱, 汽窜, 泡沫, 驱油剂, 三维物理模拟

Abstract:

In Shengli oilfield, steam flooding is impossible to start under the pressure of 5 MPa and the displacement pressure is generally 7 MPa owing to the deep burial depth of heavy oil reservoirs and the impact of edge-bottom water. To further improve the performance of steam flooding, laboratory tests are carried out to increase the reservoir recovery using chemically-assisted flooding approach. A physical simulation study is performed by taking an inverted nine-spot pattern of vertical wells in the Ng5 layer of Gudao district, Shengli oilfield. The magnitude of enhanced oil recovery by simple and chemically-assisted steam flooding is compared for assessing different injection methods with foaming and displacing agents, further to determine the method for site implementation. Laboratory experimental data show that chemically-assisted flooding in the "first adjusting and then flooding" model can further improve oil recovery on the basis of steam flooding. High-temperature displacing agent mainly plays a role in improving the oil-washing efficiency of hot water at the steam frontier, whereas high-temperature foam mainly adjusts the steam profile, increases the swept volume, and improves the thermal efficiency. Field application demonstrates that chemically-assisted steam flooding is a feasible method for the development of high-pressure heavy oil reservoirs.

Key words: heavy oil reservoir, chemical assistant steam flooding, steam channeling, nitrogen foam, displacing agent, three-dimensional physical simulation

中图分类号:

TE357

曹嫣镔, 刘冬青, 王善堂, 于田田, 张仲平. 中深层稠油油藏化学辅助蒸汽驱三维物理模拟与应用[J]. 石油学报, 2014, 35(4): 739-744.

Cao Yanbin, Liu Dongqing, Wang Shantang, Yu Tiantian, Zhang Zhongping. Three-dimensional physical simulation and application of chemistry assistant steam flooding on middle and deep heavy oil reservoir[J]. ACTA PETROLEI SINICA, 2014, 35(4): 739-744.

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中深层稠油油藏化学辅助蒸汽驱三维物理模拟与应用

Three-dimensional physical simulation and application of chemistry assistant steam flooding on middle and deep heavy oil reservoir

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