锦150块低渗油藏精细注水技术研究与实践

Development and Practice of Fine Water Flooding Technique in Low Permeable Oil Pool of Block Jin 150.

锦150块中生界油层属于典型的低渗油藏,由于投产初期采用天然能量开采,导致地层压力下降快,产量递减幅度较大。为提高区块开发效果,对区块注水开发的可行性进行了研究,并对储层进行了系统评价,确定在该块实施精细注水技术。通过实施油层全程保护、防膨、优选水源、控制注水强度、完善高压注水系统等精细注水工艺技术,使得区块开发方式更加合理,综合开发效果明显改善,同时提高了区块储层的动用程度和最终采收率。

Mesozoic oil layer of Jin 150 block belongs to the typical low permeable oil pool.Natural energy in the early phase of commissioning results in the reservoir pressure decline quickly and production scale down in large scale.In order to promote the block development effect,this paper studies the feasibility of water flooding development and accesses the reservoir systematically,determines to adopt fine flooding technique in the block.By means of whole course protection of oil layer,antiswelling,optimizing water resource,controlling water flooding tensity,improving fine water flooding technique such as high pressure water flooding system,it makes the block development mode more reasonable and the comprehensive development effect more obvious,also enhances producing extent and final recovery efficiency of block reservoir at the same time.