随钻前视电磁波电阻率测井方法前期理论研究

随钻前视电磁波电阻率测井能及时提供前方较远地层界面信息和界面距离,是实现地质导向,提高复杂油藏采收率的关键技术。通过对随钻前视电磁波电阻率测井响应的正演数值模拟,分析仪器参数和环境因素对测井响应的影响规律,为随钻前视电磁波电阻率仪器的设计、地质导向和实时地质评价奠定了理论基础。

Prophase Theoretical Study on Look-ahead Electromagnetic Wave Resistivity LWD

With the improvement of oil field exploration and development,the heterogeneous complex reservoirs have accounted for a large proportion in the oilfield and consequently the geosteering technology needs further development.Look-ahead electromagnetic wave resistivity LWD,which is able to provide the formation interface information and interface distance in front of the bit,is a key technology to achieve the geosteering and improve the recovery ratio of complex reservoir.Through the forward modelling of look-ahead electromagnetic wave resistivity LWD,the effects of the instrument parameters and environmental factors on its log response are analyzed based on the numerical simulation,w hich lays the theoretical foundation for the design of look-ahead electromagnetic wave resistivity logging instruments,geosteering and the real-time geological evaluation.