濮城油田南区沙二下油藏濮53块调整治理效果及认识

Result and Understanding of Adjusting and Treating of Pu53 Block of South S2x Reservoir in Pucheng Oilfield

濮城油田南区沙二下油藏濮 53块是一个多油层非均质的油藏,由于层间强烈的非均质性和长井段大渗透率级差多油层合采合注,导致Ⅰ类主力油层采出程度高、水淹严重,Ⅱ、Ⅲ类非主力油层水驱动用低、采出程度低。通过对油藏构造、储层特征精细描述和油藏剩余油分布精细研究,依靠多元化的分层配套挖潜技术,在濮 53块细分了Ⅰ类层和Ⅱ、Ⅲ类层的注采井网,扩大注水波及体积,提高了Ⅱ、Ⅲ类层的水驱控制储量和动用储量,从而提高区块的采收率。

The Pu53 block of South S2x reservoir in Pucheng oilfield is a heterogeneity and many oil stratums reservoir Because of existing sharply heterogeneous and huge ratio of penetrable in long well section, it resulted that the first type of main force oil stratums appeared high production extent and serious water flooding But the second or third type of oil stratums appeared low level of hydraulic driving extent and production extent By studying and analyzing the structure of reservoir, characteristic of reservoir layers and the distributed law of surplus oil, depending on polybasic complete set of the technology for dig potential and stratification of the reservoir, the well nets of the first type of main force oil stratums and the second or third type of oil stratums were subdivided, the injection water spread over volume was broadened, the quantity of the control and use of water flooding oil were improved Finally, the ratio of production of the block was improved