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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。
The XG7 block of Xinglongtai oilfield is a buried hill reservoir discovered in recent years. The reservoir has special geological conditions, ancient strata, complex buried hill structure, complicated lithology, huge reservoir thickness, strong heterogeneity, unique geology Conditions have brought great challenges to reservoir development. In the face of many unfavorable factors and challenges, a numerical simulation study has been carried out for the low utilization of vertical wells through innovative research and preliminary practice. A layered development using superimposed horizontal wells has been proposed. Stacking method, vertical well spacing, horizontal length and water injection method and other key parameters were optimized. Practice has proved that: stacking horizontal wells is feasible and has achieved good development results. The successful development of the Xinggu buried hill reservoirs provides a reference for the development of similar reservoirs.