油气运移过程中断层启闭性的量化表征参数评价

doi:10.7623/syxb201301010

石油学报 ›› 2013, Vol. 34 ›› Issue (1): 92-100.DOI: 10.7623/syxb201301010

油气运移过程中断层启闭性的量化表征参数评价

张立宽 1 　罗晓容 1 　宋国奇 2 　郝雪峰 3　邱桂强 3 　宋成鹏 4 　雷裕红 1　向立宏 3 　刘克奇 3　解玉宝 3

1. 中国科学院地质与地球物理研究所油气资源研究重点实验室北京 100029; 2. 中国石化胜利油田公司山东东营 257062;3. 中国石化胜利油田公司地质科学研究院山东东营 257015; 4. 中国石油勘探开发研究院北京 100083

收稿日期:2012-06-03 修回日期:2012-09-26 出版日期:2013-01-25 发布日期:2013-04-09
通讯作者: 张立宽
作者简介:张立宽，男，1979年4月生，2001年获吉林大学石油与天然气地质勘查专业学士学位，2007年获中国科学院地质与地球物理研究所博士学位,现为中国科学院地质与地球物理研究所副研究员，主要从事油气二次运移研究。
基金资助:
国家重大科技专项（2008ZX05008-004）和国家自然科学基金项目（No.40902041）资助。

Quantitative evaluation of parameters to characterize fault opening and sealing during hydrocarbon migration

ZHANG Likuan 1　 LUO Xiaorong 1　 SONG Guoqi 2　 HAO Xuefeng 3　 QIU Guiqiang 3　 SONG Chengpeng 4　LEI Yuhong 1 　XIANG Lihong 3 　LIU Keqi 3 　XIE Yubao 3

Received:2012-06-03 Revised:2012-09-26 Online:2013-01-25 Published:2013-04-09

摘要/Abstract

摘要：

在油气勘探决策中，判断断层在油气运移和聚集过程中表现出的开启或封闭性特征十分重要，但一般很难从众多影响断层启闭性的地质因素中筛选和确定有效的最佳参数。以东营凹陷南坡东段王家岗油田为研究区，根据断层两盘储层内是否发现油气及油气藏的成因关系，判识断层在油气运移过程中的启闭性。基于断层带的内部结构特征和流体行为，提出利用断层连通概率评价断层带整体在活动期间作为油气运移通道的可能性。通过典型断层油藏精细解剖，按照一定密度在断层面上逐点进行启闭性判识和统计分析，建立了断层连通概率与各种量化参数之间的统计关系，利用相关系数评价了这些地质参数表征断层启闭性的有效性。研究认为，前人提出的各种启闭性量化参数与断层连通性的关系趋势与定性认识相一致，但反映单一地质因素的参数难以确定断层在运移过程是否作为运移通道，而包含两个或数个地质因素的综合参数，如泥岩涂抹因子（S_GR）、断层面正应力参数的效果明显改善;断层开启系数（F_OI）与断层启闭性的关系最密切，是表征断层启闭性的有效参数。

关键词: 油气运移, 断层启闭性, 量化参数, 断层连通概率, 王家岗油田

Abstract:

It is critical in hydrocarbon exploration to understand the intricate role of a fault, that played during hydrocarbon migration and accumulation. And it is generally difficult to determine valid optimum parameters for the characterization of fault connectivity among numerous geological factors while quantitatively evaluating fault opening and sealing. Taking Wangjiagang oilfield in Dongying depression as a studied area, we deduced the hydraulic connectivity of fault plane during hydrocarbon migration according to the occurrence of hydrocarbon accumulation within reserviors at two sidles of faults walls and the genetic correlation between them. An index, the fault-connecting probability, was used to evaluate the possibility fault acted as a migration pathway. On the basis of fault-connectivity determination and data statistics for a typical faulted reservoir, a relationship between the index and any an individual parameter proposed in previous works to characterize fault sealing was built to evaluate the effect of these parameters in characterizing fault connecting properties for hydrocarbon migration. By compariing the statistical correlation between each of these parameters and the fault-connecting probability, we found that the effectiveness of a parameter representing only a single geological factor is generally weak to determine whether the fault acted as a migration pathway. Some comprehensive parameters that deal implicitly or explicitly with two or more geological factors, such as the shale gouge ratio (S_GR), can improve the effectiveness of normal stress of a fault plane substantially. The fault opening index (F_OI) may be the best parameter to characterize the fault connecting for hydrocarbon migration.

Key words: hydrocarbon migration, fault opening and sealing, quantitative parameter, fault-connecting probability, Wangjiagang oilfield

张立宽　罗晓容　宋国奇　郝雪峰　邱桂强　宋成鹏　雷裕红　向立宏　刘克奇　解玉宝 . 油气运移过程中断层启闭性的量化表征参数评价[J]. 石油学报, 2013, 34(1): 92-100.

ZHANG Likuan　LUO Xiaorong　SONG Guoqi　HAO Xuefeng　QIU Guiqiang. Quantitative evaluation of parameters to characterize fault opening and sealing during hydrocarbon migration[J]. Editorial office of ACTA PETROLEI SINICA, 2013, 34(1): 92-100.

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油气运移过程中断层启闭性的量化表征参数评价

Quantitative evaluation of parameters to characterize fault opening and sealing during hydrocarbon migration

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