安棚深层系储层裂缝对开发的影响及对策  

The effect of Anpeng deep reservoir fracture to development and countermeasure

作　　者：龚银忠[1] 胡书奎[2] 沈祖吉 施木喜[4] 赵天富[2] 李红茹[2] 

机构地区：[1]中国石化河南石油勘探局,河南南阳473132 [2]中国石化河南油田分公司石油勘探开发研究院 [3]南阳远征实业有限责任公司 [4]中国石化河南油田分公司第一采油厂

出　　处：《石油地质与工程》2010年第5期76-79,共4页Petroleum Geology and Engineering

摘　　要：安棚深层系特低孔特低渗砂砾岩储层主要发育高角度构造裂缝,其次还有顺层分布的成岩裂缝。构造裂缝主要有近东西向、北东向、北西向和南北向4组,其中以东西向裂缝最发育,其次是北东向裂缝,而北西向和南北向裂缝发育程度较差。但在北东向现今地应力作用下,北东向裂缝的开度最大,连通性最好,渗透率最高,是该区的主渗流裂缝方向。裂缝的发育程度影响安棚深层系特低孔特低渗储层的油井产能、油井含水变化和注水井吸水状况。开发井网与裂缝的不匹配是造成目前开发效果差的主要原因。针对该区裂缝的发育特征及其对开发的影响,可以将目前东西向井排的五点法面积井网转换为平行北东向主渗流裂缝井排方向的行列注采井网,具有较好的开发效果。the high angle tectonic fracture and bedding distribution of diagenetic fracture are developed in Anpeng deep layer extra-porous,extra-low permeability glutamate reservoir.Main structural fractures includes four groups as near east-westward,north eastward,north westward and south northward groups.The east-westward fracture is devel-oped better,then the north eastward,the north westward and south northward are worse.The influence of current ground stress to north eastward made the largest oneness in north eastward fracture,best connectivity,and highest per-meability,which are main permeable fracture of the area.The fracture development degree affected oil well production capacity,water content change and water absorption in water injection well.Developed well pattern does not match the fracture,which is currently the main reason for the poor effect.According to the characteristics of the development of fracture and its influence to the development,the current fivepoint well pattern of east westward well collocation can be converted to parallel north eastward to main permeable fracture row injection-production patterns,which have good development effect.

关 键 词：安棚深层系 裂缝 低渗透储层 开发效果 对策 

分 类 号：TE313.3[石油与天然气工程—油气田开发工程]