石油天然气学报
石油天然氣學報
석유천연기학보
JOURNAL OF OIL AND GAS TECHNOLOGY
2010年
1期
141-144
,共4页
低渗透油藏%安棚浅中层系%水淹特征%控制因素
低滲透油藏%安棚淺中層繫%水淹特徵%控製因素
저삼투유장%안붕천중층계%수엄특정%공제인소
low permeability reservoir%shallow-middle layer system%Anpeng Region%water-out character%control factor
生产井强水淹导致安棚浅中层系低渗透油藏整体开发效果交差.通过对生产井见水响应特征的分析及安棚地应力场、天然裂缝和压裂裂缝的综合研究,认为安棚地区最大水平主应力方向为北东向,而并非先前认为的东西向;现有注采井网与天然裂缝不匹配是造成目前生产井见水的主要原因.这些认识为油藏下步开发部署提供了调整方向.
生產井彊水淹導緻安棚淺中層繫低滲透油藏整體開髮效果交差.通過對生產井見水響應特徵的分析及安棚地應力場、天然裂縫和壓裂裂縫的綜閤研究,認為安棚地區最大水平主應力方嚮為北東嚮,而併非先前認為的東西嚮;現有註採井網與天然裂縫不匹配是造成目前生產井見水的主要原因.這些認識為油藏下步開髮部署提供瞭調整方嚮.
생산정강수엄도치안붕천중층계저삼투유장정체개발효과교차.통과대생산정견수향응특정적분석급안붕지응력장、천연렬봉화압렬렬봉적종합연구,인위안붕지구최대수평주응력방향위북동향,이병비선전인위적동서향;현유주채정망여천연렬봉불필배시조성목전생산정견수적주요원인.저사인식위유장하보개발부서제공료조정방향.
The development effect of the shallow-middle layer system in Anpeng lowpermeability reservoir became poor because great majority of producing wells were at high water-cut stage. Through analyzing breakthrough characteristics of producing wells and a comprehensive study of in-situ stress field, natural fracture and induced fracture in Anpeng Region, the conclusions indicate that the direction of maximum horizontal principal stress should be directed towards the north-east rather than towards east-west; the current flooding pattern not matching with the natural fractures is the main reason of breakthrough. And this understanding reorientates the next development of the reservoirs.
