叠置水平井开发潜山油藏数值模拟研究与实践

兴隆台油田XG7块是近年来发现的潜山油藏,该油藏地质条件特殊,地层古老,潜山构造及内幕复杂,岩性多样,储层巨厚,非均质性强,独特的地质条件给油藏开发带来巨大挑战。面对诸多不利因素和挑战,通过创新研究和初步实践,针对直井开发动用程度较低的状况,开展了数值模拟研究,提出了利用叠置水平井进行分层开发,并对叠置水平井的叠置方式、纵向井距、水平段长度及注水方式等关键参数进行了优化研究。实践证明：叠置水平井是可行的,且已经取得了较好的开发效果,兴古潜山油藏的成功开发为同类油藏的开发提供了可借鉴经验。

Numerical simulation study and practice on buried-hill reservoir development with overlapped horizontal well

Block XG7 of Xinglongtai Oilfield is a buried hill oil reservoir discovered in recent years.This reservoir has the characteristics of special geological condition,old formation,complex internal structures,diverse lithology,huge pay layer and strong heterogeneity.Unique geological conditions bring enormous challenges to reservoir development.Faced with a number of negative factors and aimed at low development degree of vertical wells,researchers present development from separate zones with overlapped horizontal well and optimize the key parameters of overlapping way of horizontal wells,vertical spacing,horizontal segment length and water injection through innovative,preliminary practice and numerical simulation studies.Practice proves that it is feasible to use overlapped horizontal wells and achieves a good development effect.The successful development of XG buried-hill reservoir provides a reference for similar reservoir development.