岩性油藏有效厚度的确定方法  

Calculation of Effective Thickness of Low Permeability Lithologic Oil Reservoir

作　　者：邢星[1] 袁海莉 谢旭强[1] 刘涛[1] 王春艳[2] 

机构地区：[1]西安石油大学油气资源学院,陕西西安710065 [2]延长油田股份有限公司,陕西延安716000

出　　处：《辽宁化工》2012年第2期160-161,190,共3页Liaoning Chemical Industry

摘　　要：A油田延9储层是一套三角洲平原沉积,储层主要为细砂岩。本次以岩心分析资料,试油试采数据为基础、综合地质、录井、地球物理测井等资料对该地区有效厚度进行研究,来确定适应本区油层特点的岩性、物性、含油性和电性的下限标准:孔隙度为15%,渗透率为4.0×10-3μm2;电性下限电阻率为19Ω.m;声波时差为252μs/m。有效厚度的起算取0.4 m,致密夹层的起扣厚度取0.2 m。通过对储层参数定量解释模型的优化,提高了储层参数计算精度,避免了有效厚度的漏失。Yan-9 reservoir in an oilfield is delta deposition,the lithology is mainly the fine sandstone.In this paper,according to well testing data,core analysis data,geological data and logging data,effective thickness of the region was studied to determine lower limit of the standard about lithology,physical properties,oil-bearing and electrical property as follows: 15% porosity,permeability of 4.0×10-3 μm2,lower electrical resistivity of 19 Ω·m,acoustic travel time 252 μs/m.Starting point of effective thickness selected 0.4 m,dense laminated buckle thicknesses was from 0.2 m.Quantitative interpretation of reservoir parameters by the optimization model can improve the calculation accuracy of reservoir parameters.

关 键 词：延9储层 物性 有效厚度下限 

分 类 号：TE122[石油与天然气工程—油气勘探]