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洼83块是典型的层状稠油油藏,由于油藏构造复杂,油层厚度薄,原油粘度高,注汽困难且出砂严重,采出程度仅为0.02%。2010年以来,在精细油藏地质研究的基础上,通过水平井分层开发,配套砾石充填防砂技术,实现新动用地质储量298万t,日产量由0 t上升到最高的97 t,采油速度由0.02%上升到最高0.84%,取得了良好的开发效果。这在盘活区块储量的同时,为类似油藏的开发积累了宝贵的经验。
The depression 83 is a typical layered heavy oil reservoir. Due to the complex reservoir structure, thin oil layer, high crude oil viscosity, difficult steam injection and serious sand production, the recovery rate is only 0.02%. Since 2010, on the basis of fine reservoir geology research, the horizontal well has been developed by stratified development with gravel packing sand control technology to realize the newly used geological reserves of 2.98 million tons and the daily output from 0 t to the highest of 97 t. The oil recovery rate From 0.02% to the highest 0.84%, and achieved good development results. This has accumulated valuable experience in the development of similar reservoirs while activating the reserve of reservoirs.