钱家店凹陷胡力海洼陷成藏条件分析
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摘要
利用地震、钻井、测井及分析化验等资料 ,对胡力海洼陷的成藏条件进行分析 ,以搞清区内的断裂展布、构造特征、砂体分布及油气富集规律 ;进行圈闭评价并优选有利的勘探目标。研究结果认为 :胡力海洼陷构造带为凹陷内的有利构造带 ,东、西部断阶带位于该带两侧 ;该区带构造背景、地质条件复杂 ,具有两套生油岩系、多种储集体类型和多种构造类型 ;生、储、盖组合以自生自储和下生上储式为主 ;区内大、小断层发育 ,为油气运移提供了有利条件。
Reservoir forming conditions of Hulihai sag was analyzed by using seismic, drilling, logging and assay data, in order to understand the fracture, structure, sands distribution and the law of oil and gas accumulation. Traps were evaluated to optimize exploration targets. The result of the study indicated that Hulihai sag structure was a favorable one within the depression, and the east and west fault step zones were located on two sides of this structure. This region was complicated in structure setting and geological conditions, and had two sets of source rock systems, many types of reservoirs and structures. Major source reservoir caprock assemblages were in situ source reservoir and reservoir rocks with underlying source. Various faults were developed within this region and provided favorable conditions for oil and gas migration.
Reservoir forming conditions of Hulihai sag was analyzed by using seismic, drilling, logging and assay data, in order to understand the fracture, structure, sands distribution and the law of oil and gas accumulation. Traps were evaluated to optimize exploration targets. The result of the study indicated that Hulihai sag structure was a favorable one within the depression, and the east and west fault step zones were located on two sides of this structure. This region was complicated in structure setting and geological conditions, and had two sets of source rock systems, many types of reservoirs and structures. Major source reservoir caprock assemblages were in situ source reservoir and reservoir rocks with underlying source. Various faults were developed within this region and provided favorable conditions for oil and gas migration.
引文
[1]王德发中国沉积学[M ]北京:石油工业出版社,1994
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