安塞油田坪北区小排距加密技术研究

Infilling adjustment for well array with small distance in Pingbei Area of Ansai Oilfield

雷　茹 王　涛 虢　麟

西安石油大学，陕西  西安  710069 中国石油大学，北京  102249 江汉油田分公司坪北经理部，陕西　　安塞　　717408

Xi’an Shiyou University, Xi’an 710069袁China China University of Petroleum, Beijing 102249, China Pingbei Management Department, Jianghan Oilfield Company, SINOPEC, Ansai 717408, China

从安塞油田坪北区的生产动态规律和数值模拟2个方面，研究了安塞油田坪北区剩余油分布规律，根据合理井网密度的分析与计算，认为坪北区目前的注采井距过大，油田井网有进一步加密调整的潜力。同时，从压力梯度、压力剖面等油藏监测资料的分析及生产动态资料的统计分析入手，论证了加密井的合理井排距的调整范围，并对小排距加密效果进行了模拟、预测和评价。其结果表明，安塞油田坪北区井网小排距加密调整是油田的有效稳产措施，具有提高产量和采油速度、缩短见效时间及提高采出程度的作用。

Based on the understand of residual oil distribution, the calculation result of reasonable, practical and economical well spacing, the analysis of reasonable well array distance and the effective prediction of well array with small distance, it is believed that the spacing between the injecting and producing wells is too large. It is suggested that infilling adjustment with small well array distance in Pingbei area is an effective measure to stable oil output, and this measure can enhance output and production rate, shorten response time and advance degree of reserve recovery.