安塞油田长6油藏单砂体精细刻画及加密潜力研究

Studies on the Fine Description and Potential of Infill Drilling in Single Sand Body of Chang6 Reservoirs in Ansai Oilfield

根据露头和岩相韵律，建立了单砂体精细刻画的岩相小层细分标准；然后通过单砂体的精细刻画，得出安塞长6油藏砂体叠置样式及连通方式；分析认为王窑区一次井网在非主力小层对储层控制程度和动用程度较低．有加密改善的潜力；并运用多种方法论证实现最大控制程度的极限井网密度和井排距，提出了合理的加密井距，并开展了加密调整试验，有效改善了开发效果。因此通过本文研究解答了安塞油田长6油藏一次井网下水驱控制和动用状况、合理的井距、水驱控制和动用提升潜力等，而且现场实例验证了研究成果的可靠性和实用性。

According outerop and the rhythm of the lithofacies, sub-division crtleria for petrographic small layers are established M fine description of mono-sand-body. The superimposition and connection styles of sand bodies of Chang6 reservoirs in Ansai oil field were obtained through fine description of mono-sand-body. It is considered through analysis that the primary well pattern in the non-main small reservoirs of wangyao district is in low degrees of control for reservoirs and ulilization of the reservoirs. with potentials for improvement of thrill drilling. Using a variety of methods. The authors demonstrate the ultimate density of well pattern and well-row spacing that could achieve the greatesl control degree. The reasonable infill wells spacing is proposed, and the infill adjustment test is carried out. These improve effectively the development resuhs.