贝尔凹陷基岩潜山致密储层裂缝分布预测

石油与天然气地质 ›› 2014, Vol. 35 ›› Issue (2): 253-257.

贝尔凹陷基岩潜山致密储层裂缝分布预测

杨勉¹, 徐梓洋¹, 杨柏松², 魏伟³, 李启菊³

1. 东北石油大学地球科学学院, 黑龙江大庆 163318;
2. 中国石油对外合作部, 北京 100007;
3. 中国石油青海油田分公司采油一厂, 青海茫崖 816499

收稿日期:2013-08-11 修回日期:2014-01-12 出版日期:2014-04-08 发布日期:2014-05-21
第一作者简介:杨勉（1974- ），男，博士、副教授，含油气盆地分析和油气成藏。E-mail：1543641@qq.com。
基金项目:
国家高技术研究发展计划（“863”计划）项目（2013AA064903）；黑龙江省普通高等学校青年学术骨干支持计划项目（1155G03）。

Fracture prediction of bedrock buried hill tight reservoirs in Beier Depression

Yang Mian¹, Xu Ziyang¹, Yang Baisong², Wei Wei³, Li Qiju³

1. School of Geosciences, Northeast Petroleum University, Daqing, Heilongjiang 163318, China;
2. Foreign Cooperation Department, PetroChina, Beijing 100007, China;
3. No.1 Oil Production Plant, PetroChina Qinghai Oilfield Company, Mangya, Qinghai 816499, China

Received:2013-08-11 Revised:2014-01-12 Online:2014-04-08 Published:2014-05-21

摘要/Abstract

摘要： 贝尔凹陷基岩潜山储层属低孔低渗-超低孔超低渗型致密储层，构造裂缝是其主要的储集空间。预测致密储层构造裂缝的分布规律是寻找优质储层、提高油气藏勘探成功率的前提和保障。文章根据贝尔凹陷基岩顶面构造形态及基底断层分布特征，利用“曲率法”和“有限元数值模拟法”对“与褶皱相关裂缝”和“与断裂相关裂缝”成因的两种裂缝发育带的分布进行了预测。结果表明，贝尔凹陷基岩顶面与褶皱相关裂缝发育带主要沿构造走向分布，分布于贝西次凹贝302-贝13井及贝D4井东部、贝中断隆带霍10井周边及贝42-贝16井一线、贝中次凹内希13-希5-德8井附近。与断裂相关裂缝发育带主要分布于贝西次凹西南部及中部、贝中断隆带贝30井附近、贝中次凹东北部德8井附近及西南部希5井周边。岩心观察表明贝16井基岩潜山顶部主要发育构造曲率控制下的溶蚀性裂缝，与裂缝预测结果相一致，证明了预测方法的合理性。

关键词: 基岩潜山, 裂缝预测, 致密储层, 贝尔凹陷

Abstract: Bedrock buried hill reservoirs in Beier Depression belong to tight reservoirs with low to ultralow porosity and low to ultralow permeability,and have structural fractures as the main reservoir spaces.Mapping of these structural fractures is the premise and guarantee for looking for high quality reservoirs and improve exploration success rate.According to the top structural form of bedrock and distribution of basement faults in Beier Depression,we mapped two types of structural fractures by using curvature method and finite element numerical simulation method.One is fracture related to folds and the other is fracture related to faults.The fold-related fracture on top of the bedrock in Beier Depression are distributed mainly along strike,and are located in east of well Bei302-Bei13 and BeiD4 of west Beixi sub-depression,periphery of well Huo10 and Bei42 to Bei16 of Beizhong fault-uplift zone,and periphery of well Xi13-Xi5-De8 of Beizhong sub-depression.The fault-related fractures are mainly distributed in the southwest and central of Beixi sub-depression,periphery of well Bei30 of Beizhong fault-uplift zone,and periphery of well De8-Xi5.Cores observation shows that curvature-controlled dissolution fractures are common on top of the bedrock in well Bei16,which coincides with fracture prediction results.

Key words: bed rock buried hill, fractures prediction, tight reservoir, Beier Depression

中图分类号:

TE121.1

杨勉,徐梓洋,杨柏松,等. 贝尔凹陷基岩潜山致密储层裂缝分布预测[J]. 石油与天然气地质, 2014, 35(2): 253-257. doi: Yang Mian,Xu Ziyang,Yang Baisong,et al. Fracture prediction of bedrock buried hill tight reservoirs in Beier Depression[J]. Oil & Gas Geology, 2014, 35(2): 253-257. doi:

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