海上X油田水平井智能分采管柱卡堵水潜力井筛选及应用效果分析

Selection of potential wells for water plugging by using intelligent separate-production strings in horizontal wells in X offshore oilfield and its application effect

高智梁 郑旭 任宜伟 邓永祥 潘彬

GAO Zhiliang ZHENG Xu REN Yiwei DENG Yongxiang PAN Bin

中海石油(中国)有限公司秦皇岛32-6作业公司 中海石油(中国)有限公司曹妃甸作业公司 中海油能源发展股份有限公司工程技术分公司

CNOOC Limited Qinhuangdao 32-6 Operating Company, Tianjin 300450, China CNOOC Limited Caofeidian Operating Company, Tianjin 300450, China CNOOC EnerTech-Drilling & Production Co., Tianjin 300450, China

水平井高含水治理是水驱油田开发中后期面临的主要难题。海上X油田水平井高含水治理措施难度大、费用高，而智能分采管柱卡堵水技术由于其成本低、作业简单、风险小等特点，适合于海上油田进行水平井卡堵水试验。通过分析X油田油井完井方式、目前含水状况、累产油量、储层非均质性和见水时间等因素，确定出X油田“水淹”井剩余油潜力大小及工程条件可实施性，最终筛选出5口具备水平井智能分采管柱卡堵水潜力的试验备选井，并依据1口井的卡堵水实例进行实施效果分析，结果表明利用智能分采管柱进行大段“找水、堵水”现场应用效果较好，值得进一步推广应用，为后期油田“控水、增油”提供技术借鉴。

The main difficulty of water flooding oilfields in the middle and late stages is to treat the high water cut of horizontal wells. In X offshore oilfield, however, the treatment of high water cut is difficult and the cost is high. Water plugging technology based on intelligent separate-production string are characterized by low cost, convenient operation and low risk, so it is suitable for water plugging of horizontal wells in offshore oilfields. In this paper, the remaining oil potential of watered out wells in X oilfield and the technical practicability of water plugging were determined by analyzing completion mode, current water cut, cumulative oil production, reservoir heterogeneity and water breakthrough time. And finally 5 candidate wells were selected for water plugging test because of their potential of water plugging with intelligent separate-production strings. Then, the implementation results of water plugging in one well were analyzed. The results show that the intelligent separate-production string is remarkable in water searching & plugging of large sections, should be popularized and applied further. It provides the technical instruction for water control and oil production improvement of oilfields at the late stage of development.

10.13639/j.odpt.2017.01.017