松辽盆地北部深层致密火山岩气藏天然裂缝分布特征及控制因素

doi:10.11743/ogg20200307

石油与天然气地质 ›› 2020, Vol. 41 ›› Issue (3): 503-512.doi: 10.11743/ogg20200307

松辽盆地北部深层致密火山岩气藏天然裂缝分布特征及控制因素

高帅^1,2, 巩磊^1,2, 刘小波³, 柳波⁴, 高昂⁵, 宿晓岑², 王杰², 李晶⁶

1. 东北石油大学环渤海能源研究院, 河北秦皇岛 066004;
2. 东北石油大学地球科学学院, 黑龙江大庆 163318;
3. 中国石油大庆榆树林油田开发有限责任公司, 黑龙江大庆 163453;
4. 东北石油大学非常规油气研究院, 黑龙江大庆 163318;
5. 中国石油大庆油田国际勘探开发公司, 黑龙江大庆 163000;
6. 中国石油测井有限公司新疆分公司, 新疆克拉玛依 834000

收稿日期:2019-05-20 修回日期:2020-03-19 发布日期:2020-06-16
通讯作者: 刘小波(1982-),男,博士、高级工程师,构造地质学。E-mail:liuxiaobokm@126.com。 E-mail:liuxiaobokm@126.com
第一作者简介:高帅(1987-),女,博士、讲师,沉积岩石学。E-mail:349684871@qq.com。
基金项目:
国家自然科学基金项目（41902150）；黑龙江省自然科学基金项目（QC2018043）；黑龙江省普通本科高等学校青年创新人才培养计划项目（UNPYSCT-2018043）；中国博士后基金项目（2018M631908）；东北石油大学“国家基金”培育基金项目（2017PYQZL-14）；优秀科研人才培育基金项目（SCXHB201705）；青年科学基金项目（2018QNL-12）。

Distribution and controlling factors of natural fractures in deep tight volcanic gas reservoirs in Xujiaweizi area,Northern Songliao Basin

Gao Shuai^1,2, Gong Lei^1,2, Liu Xiaobo³, Liu Bo⁴, Gao Ang⁵, Su Xiaocen², Wang Jie², Li Jing⁶

1. Bohai-Rim Energy Research Institute, Northeast Petroleum University(Qinhuangdao), Qinhuangdao, Hebei 066004, China;
2. School of Earth Sciences, Northeast Petroleum University, Daqing, Heilongjiang 163318, China;
3. Daqing Yushulin Oilfield Development Co. Ltd., PetroChina, Daqing, Heilongjiang 163453, China;
4. Institute of Unconventional Oil & Gas, Northeast Petroleum University, Daqing, Heilongjiang 163318, China;
5. Daqing International Exploration and Development Company, PetroChina, Daqing, Heilongjiang 163000, China;
6. PetroChina Logging Company Ltd. Xinjiang Branch, Karamay, Xinjiang 834000, China

Received:2019-05-20 Revised:2020-03-19 Published:2020-06-16

摘要/Abstract

摘要： 天然裂缝系统控制了松辽盆地北部徐家围子断陷深层致密火山岩储层天然气的运移、聚集和成藏。明确致密火山岩储层天然裂缝主控因素是准确预测裂缝分布规律的基础。通过野外露头区裂缝描述、岩心和微观薄片裂缝分析，结合成像测井裂缝解释，对松辽盆地北部深层致密火山岩气藏中天然裂缝的发育特征进行了精细表征，并深入分析了裂缝分布特征及控制因素。研究结果表明，研究区致密火山岩中发育有原生和次生两大裂缝类型，其中次生构造裂缝最为发育，其线密度主要分布在1.0~5.0条/m，平均为2.45条/m。裂缝发育强度主要受岩石类型、岩石力学性质、岩石脆性和构造部位等因素控制。天然裂缝方位复杂多变，是受古构造应力、断层和岩石非均质性（面理）共同作用的结果。

关键词: 天然裂缝, 断层, 岩石非均质性, 火山岩, 松辽盆地

Abstract: The natural fracture system controls the hydrocarbon migration,accumulation and enrichment in the tight volcanic reservoirs,Northern Songliao Basin.It is of fundamental significance to illuminating the factors controlling natural fracture development in tight volcanic reservoirs for an accurate prediction of fracture distribution pattern.Using data from outcrop,core and thin section observation,as well as fracture interpretation with image logging,we finely characterize the development features of natural fractures in the tight volcanic reservoirs of the study area,and make a systematic research on the fracture distribution and its controlling factors.The results show that the fractures developed therein can be grouped into two types,including primary and secondary fractures.Among others,the secondary tectonic fractures are dominant,with a linear density ranging from 1.0 m^-1 to 5.0 m^-1,averaging at 2.45 m^-1.The fracture intensity varies greatly,mainly controlled by rock type,mechanical property,brittleness and tectonic position.The natural fracture orientation is complex and variable,a result of the combined action of paleotectonic stress,fault and rock heterogeneity (foliation).

Key words: natural fracture, fault, rock heterogeneity, volcanic rock, Songliao Basin

中图分类号:

TE121.1

高帅,巩磊,刘小波,等. 松辽盆地北部深层致密火山岩气藏天然裂缝分布特征及控制因素[J]. 石油与天然气地质, 2020, 41(3): 503-512. doi: 10.11743/ogg20200307 Gao Shuai,Gong Lei,Liu Xiaobo,et al. Distribution and controlling factors of natural fractures in deep tight volcanic gas reservoirs in Xujiaweizi area,Northern Songliao Basin[J]. Oil & Gas Geology, 2020, 41(3): 503-512. doi: 10.11743/ogg20200307

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松辽盆地北部深层致密火山岩气藏天然裂缝分布特征及控制因素

Distribution and controlling factors of natural fractures in deep tight volcanic gas reservoirs in Xujiaweizi area,Northern Songliao Basin

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