页岩气水平井前导地质物理模型的测井研究

发布时间：2018-06-04 07:41

本文选题：页岩气 + 水平井　；参考：《西南石油大学学报(自然科学版)》2017年06期

【摘要】：以川南威远地区寒武系筇竹寺组页岩气为研究对象,首先,利用邻井的测井储层评价结果优选"地质甜点"作为导向目标层;其次,分析沿井眼轨迹方位钻遇不同岩性、物性、含油性及脆性的地层剖面的随钻测井响应特征,并根据LWD和MWD资料实时确定地层倾角和厚度,准确建立前导地质物理模型;最后,利用井眼轨迹-随钻测井曲线-气藏岩性剖面综合成图技术及时判断水平井井眼轨迹在页岩储层中的位置、延伸长度及上下行方向,实时优化井眼轨迹与修正前导地质物理模型,指导钻头在优质页岩储层中的钻进,提高钻遇率。将该方法应用于研究区的页岩气水平井地质导向钻井中,效果明显。
[Abstract]:Taking the Cambrian Qiongzhusi formation shale gas in Weiyuan area of southern Sichuan as the research object, firstly, the logging reservoir evaluation results of adjacent wells are used to select "geological desserts" as the guiding target layer, secondly, the different lithology and physical properties are analyzed along the hole trajectory azimuth drilling. Response characteristics of oil-bearing and brittle formation profile while drilling, and real-time determination of formation dip angle and thickness based on LWD and MWD data, and accurate establishment of leading geological and physical model. The position, extension length and upward and downward direction of horizontal wellbore trajectory in shale reservoir can be judged by using borehole trajectory, logging curve while drilling and comprehensive synthetic chart of lithology profile of gas reservoir in time. Real time optimization of borehole trajectory and modification of leading geological physical model can guide bit drilling in high quality shale reservoir and improve drilling rate. The method is applied to the geological guiding drilling of shale gas horizontal well in the study area.
【作者单位】： "油气藏地质及开发工程"国家重点实验室·西南石油大学;四川长宁天然气开发有限责任公司;
【基金】：国家重点基础研究发展计划(2013CB228003)
【分类号】：P631.81;TE243

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