胜利油田超稠油油藏蒸汽驱三维物理模拟与应用

doi:10.7623/syxb201304014

石油学报 ›› 2013, Vol. 34 ›› Issue (4): 733-739.DOI: 10.7623/syxb201304014

胜利油田超稠油油藏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, 夏道宏¹

1. 中国石油大学化学工程学院山东青岛 266580;
2. 中国石化胜利油田分公司采油工艺研究院山东东营 257000

收稿日期:2012-12-25 修回日期:2013-03-20 出版日期:2013-07-25 发布日期:2013-07-04
通讯作者: 曹嫣镔
作者简介:曹嫣镔,男,1975年5月生,1996年毕业于山东工业大学,2005年获山东大学理学硕士学位,现为中国石油大学(华东)博士研究生、中国石化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。Email:caoyanbin177.slyt@sinopec.com
基金资助:
国家重大科技专项(2011ZX05011-002)资助。

3D physical simulation of steam flooding and applications in ultra-heavy oil reservoirs of Shengli oilfield

CAO Yanbin^1,2, LIU Dongqing², WANG Shantang², YU Tiantian², XIA Daohong¹

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

Received:2012-12-25 Revised:2013-03-20 Online:2013-07-25 Published:2013-07-04

摘要/Abstract

摘要：

针对胜利油田单56区块油藏条件,利用蒸汽驱三维物理模拟装置,开展了20% 、40% 、60% 蒸汽干度条件下反九点井网超稠油油藏蒸汽驱实验。分析了单井及井组生产动态,并在蒸汽驱的基础上研究了采用氮气泡沫的方式改善超稠油蒸汽驱的开发效果。实验结果表明,超稠油油藏汽窜较为严重,综合含水上升较快,蒸汽腔发育不均匀;边井生产效果较好,角井温度场发育较差,产液量和产油量较低,对井组贡献率较低。通过提高蒸汽干度可以有效提高蒸汽驱阶段的采收率,当注入油藏蒸汽干度从20% 提高到60%,蒸汽驱阶段的采出程度提高19.86%。段塞注入0.093 PV的泡沫体系时,蒸汽汽窜得到有效抑制,边井产液量和综合含水均出现明显下降,角井温度场开始发育,角井产液量和产油量显著增加,阶段综合含水下降7%,提高采收率15% 以上。通过提高蒸汽干度和辅助氮气泡沫调剖工艺,超稠油油藏可以转为蒸汽驱进一步提高采收率。

关键词: 蒸汽驱, 超稠油, 三维物模, 泡沫, 蒸汽干度, 汽窜, 含水率, 蒸汽腔

Abstract:

A three-dimensional physical simulation on steam flooding of ultra-heavy oil reservoirs for an inverted nine-spot well network was designed according to reservoir conditions of the Shan-56 block in the Shengli oilfield and conducted under conditions of the 20%, 40% and 60% steam dryness respectively, in order to analyze the production status of a single well or well group and improve recovery effects of ultra-heavy oil reservoirs by nitrogen foam injection on the basis of steam flooding. The experimental results show that the steam channeling of ultra-heavy oil reservoirs is relatively severe, the comprehensive water cut rises fast and steam chambers develop unevenly. Edge wells have an increase in production, while corner wells show a poor temperature growth and low level both liquid and crude production, thus contributing a little to the well group output. The steam flooding recovery could be enhanced remarkably by increasing the steam dryness, for instance, the displacement efficiency of steam flooding increased by 19.86% when the dryness of injected steam rose from 20% to 60%. When slug injection was a 0.093 PV foam system on the basis of steam flooding, the steam channeling could be effectively suppressed along with a remarkable decrease in both the liquid production and comprehensive water cut of edge wells. Moreover, a temperature field around corner wells began to develop along with a significant increase in both the liquid and crude production, the comprehensive water cut of intervals decreased by 7%, while the recovery ratio was enhanced by over 15%. Therefore, the enhanced oil recovery of ultra-heavy oil reservoirs can be further increased by increasing the steam dryness in steam flooding associated with an auxiliary profile control technique, nitrogen foam injection.

Key words: steam flooding, ultra-heavy oil, 3D physical simulation, foam, steam dryness, steam channeling, water cut, steam chamber

中图分类号:

TE357

曹嫣镔, 刘冬青, 王善堂, 于田田, 夏道宏. 胜利油田超稠油油藏蒸汽驱三维物理模拟与应用[J]. 石油学报, 2013, 34(4): 733-739.

CAO Yanbin, LIU Dongqing, WANG Shantang, YU Tiantian, XIA Daohong. 3D physical simulation of steam flooding and applications in ultra-heavy oil reservoirs of Shengli oilfield[J]. Editorial office of ACTA PETROLEI SINICA, 2013, 34(4): 733-739.

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胜利油田超稠油油藏蒸汽驱三维物理模拟与应用

3D physical simulation of steam flooding and applications in ultra-heavy oil reservoirs of Shengli oilfield

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