源断时空配置输导油气有效性研究

Effectiveness of oil and gas transporting by spatial-temporal matching of source-fault

肖雷

XIAO Lei

中国石油大庆油田有限责任公司海拉尔石油勘探开发指挥部，黑龙江 大庆 163453

Hailar Exploration and Development Administration, Daqing Oilfield Company Ltd., PetroChina, Daqing 163453, China

为了研究油气成藏过程中源断时空配置输导油气的有效性，在研究其机理及影响因素的基础上，通过确定油源断裂输导油气有利部位与不同等级烃源岩之间的空间匹配关系和比较油源断裂活动时期与烃源岩大量生排烃时期的相对早晚，建立了一套源断时空配置输导油气有效性研究方法。实例应用结果表明：留楚地区东二、三段源断空间配置输导油气有效性好的区域主要分布在北部，中等区域主要分布在中部，差的区域主要分布在南部及东西边部；源断时间配置输导油气有效性仅在明化镇组沉积时期相对较好，东营组和沙三段沉积时期相对较差。这一源断时空配置输导油气有效性特征，与目前留楚地区东二、三段已发现油气主要分布在北部，少量分布在中部，且油气规模有限的特征相吻合，表明该方法用于研究源断时空配置输导油气有效性是可行的。

In order to study the effectiveness of oil and gas transporting by spatial-temporal matching of source-fault in hydrocarbon accumulation, a set of research method was established. The method was derived based on the study of the mechanism and influencing factors, the determining of the spatial matching relationship between favorable location for transporting hydrocarbon of oil source faults and source rocks of different grades, and the comparing of the sooner or later between the active period of oil source faults and the period of massive hydrocarbon generation and expulsion of source rocks. The result show that the areas with good effectiveness of oil and gas transporting by spatial matching of source-fault in Ed2 and Ed3 in Liuchu area are mainly distributed in the north, the areas with medium effectiveness are mainly distributed in the middle, and the areas with poor effectiveness are mainly distributed in the south and in the edge of west and east. The effectiveness of oil and gas transporting by temporal matching of source-fault is relatively good only in the sedimentary period of Nm and relatively poor in the sedimentary period of Es3 and Ed. The results are coincident with that the oil and gas are mainly distributed in the north, a small amount in the middle, and the scale of oil and gas is limited in Ed2 and Ed3 of Liuchu area, which suggest that the method is feasible to be applied in studying the effectiveness of oil and gas transporting by spatial-temporal matching of source-fault.

10.6056/dkyqt201903005