ZXY1井太原—山西组泥页岩压裂层段优选  

Optimization of Fractured Shale Layer in Taiyuan-Shanxi Formation in Well ZXY1

作　　者：刘冲[1] 袁青松[1] 董果果 刘艳杰[1] 刘家橙[1] Liu Chong, Yuan Qingsong,Dong Guoguo ,Liu Yanjie ,Liu Jiacheng(Henan Institute of Geological Survey ,Zhengzhou Henan 45000)

机构地区：[1]河南省地质调查院

出　　处：《中外能源》2018年第3期32-38,共7页Sino-Global Energy

基　　金：河南省重大科技专项“河南页岩气勘查开发及示范应用研究”(编号151100311000)资助

摘　　要：压裂层段优选是钻井完成后压裂排采之前的重要工作。为解决河南温县页岩气勘查区ZXY1井太原—山西组泥页岩压裂层段优选问题,在其小层划分的基础上,以划分的7层泥页岩层为主要研究对象,对其物性、含气性和可压性进行系统评价;在泥页岩层段优选原则的指导下,结合ZXY1井地质情况,拟定压裂层段优选指标,综合物性、含气性和可压性指标,优选出较好的泥页岩小层。结果表明,2层泥页岩层物性、含气性和可压性各参数均满足层段优选指标,是最好的一层;4层泥页岩层除泊松比稍差于层段优选指标,其余参数均满足层段优选指标,是次好的一层。考虑到泥页岩压裂层段需要有较大的厚度,以满足较大资源量的要求,将最好的2层泥页岩层和次好的4层泥页岩层以及二者之间的灰岩层合并,作为最终优选的压裂层段,深度为3337.5-3365.2m,厚度为27.7m。The optimization of fractured layer is an important work before fracturing and after drilling.In order to optimize the fractured layer of Taiyuan-Shanxi Formation shale in Well ZXY1,Wenxian Block,Henan,the physical properties,gas-bearing properties,and compressibility of 7 shale layers were systemically studied based on substrata division.Better shale subzones were identified under the guidance of the fractured layer op-timization theory and the geological situation of Well ZXY1 according to the optimized indexes,physical properties,gas-bearing properties,and compressibility.The results show that,2-layer shale was the best that all the parameters of physical properties,gas-bearing properties,and compressibility satisfied the optimized indexes,and4-layer shale was better because of Poisson ratio being a little higher than that optimized index.The 2-and4-layer shale and the limestone between them were merged as the optimized fractured shale layer to meet the requirements of larger resources by thick layer.The depth and thickness of the merged layer is 3337.5-3365.2 m and 27.7 m respectively.

关 键 词：ZXY1井 太原—山西组 压裂选层 物性 含气性 可压性 泥页岩 

分 类 号：TE357[石油与天然气工程—油气田开发工程]