延安气田石炭系本溪组低渗储层压裂工艺优化  

Fracturing Technology Optimization of Low Permeability Reservoirs in Carboniferous Benxi Formation in Yan'an Gas Field

作　　者：曲少东 QU Shao-dong(Shaanxi Provincial Land Construction Group, Shaanxi Xi＇an 710075, China)

机构地区：[1]陕西省土地工程建设集团,陕西西安710075

出　　处：《辽宁化工》2018年第4期344-346,共3页Liaoning Chemical Industry

摘　　要：延安气田本溪组储层具有层薄、气藏埋深差异大、储层非均质性强的特点,目前压裂改造为区块开发的重要措施。但以往的常规致密砂岩储层压裂工艺技术已不适应低孔、特低渗薄差储层的压裂改造,表现为施工成功率低,压裂试气效果差或者储层产能动用不充分。为了提高改造效果和增加单井产量,通过对储层特征评价、历年压裂工艺技术分析和压裂工艺优化、压裂液体优选等方面的研究,形成适合延安气田本溪组低孔、特低渗透、薄差储层改造配套工艺技术体系。并成功的应用在4口井中,取得了良好的效果。最终确定了适用于延安气田本溪组气藏的储层改造配套工艺技术体系,也为类似区块提供借鉴。The reservoir of Benxi formation in Yan＇an gas field has the characteristics including thin layer,large difference of gas reservoir buried depth and strong heterogeneity of reservoir.At present,fracturing transformation is an important measure for block development.But conventional fracturing technology for tight sandstone reservoirs is not suitable for low porosity,low permeability and thin reservoirs,because the success rate of construction is low,fracturing test gas reservoir production effect is poor or inadequate.In order to improve the effect of reconstruction and single well production,through the research on the evaluation of reservoir characteristics,the analysis and optimization of fracturing technologies,optimization of fracturing fluid,the process technology system for the reservoir reconstruction of Benxi formation in Yan＇an gas field was developed.It was successfully applied in 4 wells,and good results were achieved.Finally,the matching technology system for reservoir reconstruction of Benxi formation in Yan＇an gas field was determined,which could provide reference for similar blocks.

关 键 词：低渗储层 压裂 增产 工艺优化 

分 类 号：TE357[石油与天然气工程—油气田开发工程]