延长油田X区块长4+5储层四性关系研究及油水层识别  

Study on the Four-property Relationship of Chang 4+5 Reservoirs and Identification of Oil and Water Layers in Block X of Yanchang Oilfield

作　　者：高月 辛毅超 GAO YUE;XIN Yi-chao(Xingzichuan Oil Production Plant,Yanchang Oilfield Co.,Ltd.,Yan'an Shaanxi 716000,China;Exploration and Development Technology Research Center,Yanchang Oilfield Co.,Ltd.,Yan'an Shaanxi 716000,China)

机构地区：[1]延长油田股份有限公司杏子川采油厂,陕西延安716000 [2]延长油田股份有限公司勘探开发技术研究中心,陕西延安716000

出　　处：《辽宁化工》2021年第11期1679-1681,共3页Liaoning Chemical Industry

基　　金：延长石油集团公司科技计划项目,延长油田稳产关键技术基础研究(项目编号:ycs2019ky-B-1-3)。

摘　　要：基于延长油田田X区长4+5储层物性较差测井解释模型的适应性受到限制等问题,以区块地质特征为基础,结合试油资料及测井理论等多种方法对研究区储层四性关系与油水层的识别进行了分析。结果表明,研究区长4+5储层岩性以细砂岩为主,油层组内较好的储油层其声波时差值一般大于217μs·m^(-1),深感应电阻率一般大于12Ω·m;研究区长4+5储层有效厚度的岩性下限标准确定为细砂岩,含油级别下限为油斑,含油层孔隙度下限为7%、渗透率下限为0.1 mD。Aiming at the problem that the adaptability of the logging interpretation model for the poor physical properties of the Chang 4+5 reservoir in X area of Yanchang oilfield was limited,based on the geological characteristics of the block in the study area,combined with oil test data and logging theories and other methods,the four-property relationship of the reservoir and the identification of the oil and water layers were analyzed.The results showed that the lithology of Chang 4+5 reservoir in the study area was dominated by fine sandstone.The sound wave time difference of the better oil reservoirs in the oil layer group was generally greater than 217μs·m^(-1),and the deep induction resistivity was generally greater than 12Ω·m;The lower limit of lithology for the effective thickness of Chang 4+5 reservoir was determined to be fine sandstone,the lower limit of oil-bearing grade was oil spot,the lower limit of porosity of oil-bearing layer was 7%,and the lower limit of permeability was 0.1 mD.

关 键 词：四性关系 油水层识别 长4+5 鄂尔多斯盆地 

分 类 号：TE122[石油与天然气工程—油气勘探]