X井礁滩储层测井精细评价

在介绍四川盆地东北地区下三叠统飞仙关组和上二叠统生物礁测井解释的经验和技术基础上，对X井飞仙关组、长兴组的地质和储层特征进行了对比分析，并充分利用该井的常规测井和成像测井的信息，精细地评价了该井的礁滩储层，准确地进行了气水解释,较为精确地获得了储层的参数。研究认为：在飞仙关和长兴组同时找到的礁滩叠合体具有储层发育程度高、溶蚀作用强、产量高的特点，具有较大的勘探潜力，这也得到了试油结果的验证；有效的测井组合是常规测井、电阻率成像、阵列声波、重复式地层测试器，可选择的是核磁共振测井，该井气层的测井解释成功为ＬＧ地区油气勘探提供了技术支持。

Refined logging evaluation of reservoirs of reef and beach facies in the well LG1

The discovery of the well LG1 is one of the major exploration achievements by the PetroChina Southwest Oil & Gasfield Company. After introducing the experiences and technologies of log interpretation for the bioherm reservoirs in the Lower Triassic Feixianguan Formation and the Upper Permian in northeastern Sichuan Basin, we performed a comparative analysis of the geologic and reservoir characteristics of the Feixianguan and Changxing formations in the well LG1, and performed detailed evaluation of the reservoirs of reef and beach facies in this well, accurately identified the gas and water layers, and obtained relatively accurate reservoir parameters by fully utilizing the conventional well and image logging data. The following results are achieved. The complexity of reef and beach facies identified in both Feixianguan and Changxing formations are characterized by well-developed reservoirs, strong dissolution, and high deliverability, thus they have large exploration potentials which have been proved by oil testing results. The effective logging suit consists of conventional log, resistivity image log, array sonic log, repeated drill-stem tester, with nuclear magnetic resonance log as the option. The successful log interpretation of gas layers in this well provides technical support to the exploration in the LG area.