Ｌａｎｃｅｌｏｔ，Ｇｕｉｎｅｖｅｒｅ，Ｅｘｃａｌｉｂｕｒ是主要靠水平井开发的一组气田。这些气田的水平井数据及其解释与垂直井数据相结合，用于评价目标区和强化储层描述。根据水平井岩芯可对储层质量的晚期变化和风成相进行解释。井下成像和常规电测井用于识别岩相，记录风成沙丘交错层组的晚期延伸和定位，表征成岩趋向，定位水平井未取芯部分中的裂缝。整体看来，这些水平井所穿过的主要岩相有：风成沙丘、内丘，河流进入海洋再沉积的风成相。在有些井中出现了胶结和明显的开缝，前者是自然裂缝，后者是由于钻井而引发 Lancelot, Guinevere, Excalibur are a group of gas fields developed mainly on horizontal wells. Horizontal well data and their interpretation of these fields are combined with vertical well data to evaluate the target area and to enhance reservoir description. Late-stage reservoir quality changes and aeolian facies can be explained based on horizontal well cores. Downhole imaging and conventional electrical logging are used to identify the lithofacies, record the late extension and location of the interbedded layers of wind-dune deposits, characterize diagenetic trends, and locate fractures in the un-coring sections of horizontal wells. As a whole, the main facies traversed by these horizontal wells are: aeolian dunes, invaders, and rivers into the re-deposited marine facies. In some wells cementation and obvious slits appear, the former being natural fractures and the latter due to drilling