GJ油田细分层高效挖潜技术

Technologies of High Efficiency Tapping the Potential by Detailed Separate Layer in GJ Oilfield

针对GJ油田含水上升速度加快、产量递减的现状,在精细油藏描述的基础上,认识到由于低渗透、多油层、非均质严重等原因,表现为纵向矛盾突出,非主力层动用状况较差,同时GJ油田主控断层可外推,储量基础进一步扩大。针对开发中的主要矛盾,论述了细分层开采的必要性和层系组合、合理井距等关键技术指标,进行了G6断块细分层注水开发试验。调整后油田开发效果明显变好,为严重非均质多油层油藏开发积累了宝贵经验。

Aim at the quicken cut and the degressive output actuality, according to the result of precise reservoir description, the portrait contradiction and the subordination lays insufficiency put of use because of the low permeability ., multilayer、strong heterogeneous and the reserves increasing and the main control fault extrapolating is cognition. To resolve the main development contradictions, the key technical indexes of detailed separate layer such as series combination and the reasonable well spacing as well as the needs are expounded. After adjustment the development effect meliorates. The pilot-test in G6 fault block provides experience for the seriously heterogeneous reservoir development.