须家河低渗砂岩气藏压裂施工曲线特征及压后评估分析  

Fracturing Operation Curve Characteristics and Postfrac Evaluation in Xujiahe Low-permeability Sandstone Gas Reservoir

作　　者：张智勇[1] 胥云[1] 赵俊生[2] 周书国[2] 蒋建方[1] 田助红[1] 胡利平[2] 

机构地区：[1]中国石油勘探开发研究院廊坊分院 [2]中国石油西南油气田分公司川中油气矿

出　　处：《天然气技术》2008年第1期23-28,共6页NATURAL GAS TECHNOLOGY

摘　　要：压裂施工曲线可以反映储层的渗透性、滤失性、地应力特性、裂缝破裂和延伸特性等多方面的信息。文章以四川川中须家河组的两口典型井——潼南3井和营23井为例,通过压降曲线、G函数、净压力、裂缝形态及支撑剖面的分析,对须家河低渗砂岩气藏压裂施工曲线特征及压后效果进行了分析和评估,深化了对须家河低渗砂岩气藏的认识。Fracturing operation curves can reflect a lot of reservoir information, including permeability, filtration property, earth stress, fracture rupture and extension. Taking two typical wells of Xuejiahe Formation in central Sichuan Basin, well Tongnan 3 and well Ying 23, as examples, this paper applies drawdown curve, G function, net pressure, fracture shape and supporting profile to analyze the fracturing operation curve characteristics and to evaluate the postfrac effect. At last, an acknowledgement to Xujiahe low-permeability sandstone gas reservoir is further strengthened.

关 键 词：须家河 低渗砂岩气藏 压裂施工曲线 评估分析 压降分析 G函数 净压力 

分 类 号：TE357[石油与天然气工程—油气田开发工程]