摘要
针对苏里格气田盒8下段的河道砂体边界的确定问题,基于地质资料,通过概率统计法,确定单一河道砂体的宽度为800~1 500 m;通过井点外推法,确定单一河道砂体的宽度为700~1 600 m,综合2种方法确定研究区的单一河道砂体边界为800~1 500 m;基于测井资料,确定河道砂体的有效厚度,结合邻井测井资料,根据河道砂体的宽度范围向外延展,最终确定单一河道砂体的边界。在已知单一河道砂体的展布范围与边界位置,分别绘制了苏里格西区盒8下段上部与下部的河道砂体平面展布图,不仅证实了研究区为3条河道汇聚而形成的辫状河沉积环境,而且与河道砂体地质平面展布图的结果吻合,为河流相岩性油气藏的勘探开发提供一定的地质依据。
In allusion to determination of channel sand body boundary in He 8 lower section of the Sulige Gas Field,based on geological data,determining the width of a single channel sand body was mainly from 800 to 1 500 meters by probabilistic method; determining the width of a single channel sand body was mainly from 700 to 1 600 meters by well point extrapolation method; determining the sand body boundary of single channel was from 800 to 1 500 meters in the research area by combining the two methods above,determining effective thickness of channel sand body based on well logging data,and combined with adjacent well logging data,eventually determining the sand body boundary of single channel according to the outward extension of the width of channel sand body. The plane distribution of upper and lower channel sand body were plotted respectively in He 8 lower section of the western Sulige area in the basis of known distribution and boundary position of single channel sand body,not only confirming that the braided river sedimentary environment was formed by 3 river channels in the research area,but also consistent with the results of geologic plane distribution of channel sand body,it provided some geological basis for the exploration and development of fluvial lithologic reservoirs.
出处
《能源与环保》
2017年第7期180-184,共5页
CHINA ENERGY AND ENVIRONMENTAL PROTECTION
基金
国家自然基金项目(41372125)
关键词
砂体边界
概率统计法
井点外推法
平面展布
苏里格气田
sand body boundary
probabilistic method
well point extrapolation method
plane distribution
Sulige Gas Field
