利用综合甜点对YDN地区龙马溪组页岩储层进行可压性评价

依据YDN区块的开发特性,综合地质甜点和工程甜点因素,评价其含气潜力和易改造潜力,从而确定有利的压裂井段。选定TOC含量、孔隙度及岩石力学参数表征储层的含气性和压裂难易程度,利用地质甜点指数、工程甜点指数确定研究区的地质甜点段和工程甜点段,依据综合甜点指数确定有利压裂区域。该区域产量贡献率最高,压裂效果良好。

Compressibility Evaluation of Longmaxi Shale Reservoir in YDN Area Based on Comprehensive Dessert Index

Based on the development status of YDN block and comprehensive geological and engineering dessert fac-tors,the evaluation of the gas bearing potential and the transformation potential is carried out so as to determine the favorable fracturing wells. The research shows that the content of TOC,porosity,rock mechanics parameters of res-ervoir can present the ability of gas bearing and difficulty degree in fracturing. So we analyze the above factors,and take the use of geological dessert index and engineering dessert index to determine the geological dessert section and engineering dessert section. Finally,the favorable fracturing area is found on the basis of the comprehensive com-posite dessert index. The field test results show that the yield contribution rate is the highest in this region,and the fracturing effect is good.