电缆地层取样实时流体性质识别方法  

Real-Time Fluid Property Identification Method with Cable Formation Sampling

作　　者：刘海波[1] 范川[1] 王猛[1] 吴乐军[1] 杨玉卿[1] LIU Haibo;FAN Chuan;WANG Meng;WU Lejun;YANG Yuqing(Well-Tech of China Oilfield Service Limited,CNOOC,Yanjiao,Hebei 065201,China)

机构地区：[1]中海油田服务股份有限公司油田技术事业部,河北燕郊065201

出　　处：《测井技术》2020年第4期367-371,共5页Well Logging Technology

基　　金：国家科技重大专项课题“超低渗地层测试技术与装备”(2017ZX05019-004)。

摘　　要：在海上勘探作业过程中,电缆地层取样技术是储层流体性质识别的重要手段。在分析总结电缆地层取样作业数据的基础上,建立取样过程中定性判别井下流体性质的方法。针对油层,利用井下流体电导率频率统计法,实时获取井下地层流体污染程度;针对油水同层或水层,建立井下流体电导率与电阻率的转换关系,并建立流体纯度模型,实时获取井下地层流体的污染程度。该技术有效指导现场取样作业,为现场作业决策提供重要的依据,在海上数十口探井进行测试,取得很好的效果。Cable formation sampling technology is an important method for reservoir fluid property identification during offshore exploration operations.Based on the analysis data of the cable formation sampling operation,a method for qualitatively determining the fluid properties of the downhole during the sampling process was established.For the oil layer,using the conductance frequency statistics method of the downhole fluid,the pollution degree of underground formation fluid is acquired in real time.For the oil-water layer or the water layer,the conversion relationship between the conductance value and the resistivity of the downhole fluid is established,and the fluid purity model is established.The contamination degree of the formation fluid in the well is acquired in real time.This technology effectively guides field sampling operations and provides an important basis for operation decision-making.Several exploration wells at sea have been tested and achieved good results.

关 键 词：电缆地层测试仪器 取样作业 电导率曲线 钻井液滤液 流体性质 样品纯度 

分 类 号：P631.84文献标识码:A[天文地球—地质矿产勘探]