Study of single sand body contact relationship and its effect on water drive development
The contact relationship of single sand body in L27 area of Jiyuan oilfield is complicated,and its contact relationship seriously affects the reservoir distribution pattern and the effect of water-driven development in this area.In order to study the single sand body contact relationship of the Chang 4+52 and Chang 61 oil formation groups in L27 area and its influence on the water drive development,this paper is based on the sedimentary mi-crophase and sand body distribution characteristics of the Chang 4+52 and Chang 61 oil for-mation groups,and synthesizes the drilling and logging data to identify and delineate the sin-gle sand body,and portrays the vertical and lateral contact relationship of the single sand body of the oil formation groups to further clarify the influence of the single sand body con-tact relationship on the water drive development.The results show that there are three types of single sand body contact relationships in the study area,lateral,isolated and buttress,a-mong which the lateral relationships has the best connectivity,followed by the buttress.The lateral contact relationships mainly affects the time of water injection,and the vertical con-tact relationship mainly affects the degree of water-drive utilization.The single sand body contact relationship in this area has obvious influence on the effect of water injection devel-opment,and the proposed measures to fill holes in the potential layer are of great signifi-cance to the development of this reservoir,and also provide a geological basis for the explo-ration and development of the single sand body carving in the Chang 4+5 and Chang 6 reservoirs of Jiyuan oilfield.
single sand bodywater drive developmentcontact relationshipChang 4+5 and Chang 6 reservoirsJiyuan oilfield
NETL
NSTL
万方数据
维普
