ND火山岩油藏水平井开发调整技术

Horizontal Wells Development Adjustment Technology in ND Volcanic Reservoirs

潘有军 徐赢 李道阳 张中劲 刘长地 杜春梅

PAN Youjun XU Ying LI Daoyang ZHANG Zhongjin LIU Changdi DU Chunmei

中国石油吐哈油田公司勘探开发研究院, 新疆哈密 839009

Research Institute of Exploration and Development, Tuha Oilfield Company, Petrochina, Hami 839009, China

针对ND火山岩油藏2007、2008两年快速建产后出现的产量递减快、目前单井产量低、处于低速开采的现状及直井泄油范围小、储量动用程度低的问题。为了提高储量动用程度，实现经济有效开发，提高区块产量，2013年试验水平井大型体积压裂获得成功，揭开了ND火山岩油藏水平井开发的序幕。水平井开发中通过井震结合精细刻画储层、优化水平井井网部署、分层系开发挖潜剩余油、优化压裂工艺等，取得了很好的效果，目前完钻99口水平井油层钻遇率达75%，已投产井初期平均单井日产油11.3 t/d，是直井的2.7倍，区块产量止跌回升。ND火山岩油藏开发实践表明对于储层为缝洞体的火山岩油藏可以通过水平井大型体积压裂提高单井产量、储量动用程度和开发效益，为其他同类型油藏的有效开发提供很好的借鉴。

Since the rapid production constructing of ND volcanic reservoirs in the year 2007-2008, some problems such as rapid production decline, low single-well production, low production rate, small drainage area of the well and low reserves producing degree have occurred successively. In order to enhance the reserves producing degree, achieve the economical and effective development, increase the production, an experiment of large-scale horizontal fracturing was performed and achieved success in 2013, which opened the prelude to the development of horizontal wells in ND volcanic reservoirs. Based on the application of a series of technologies such as fne reservoir characterization, optimization of horizontal well deployment, remaining oil tapping by separate layer development, optimization of fracturing technology etc., quite good effect has been achieved. 75% of 99 horizontal wells drilled encountered the oil interval. The initial average single well production of 10.3 t/d is 2.7 times that of vertical well, and the production of exploration block begins to rally. The practice of horizontal well development in ND volcanic reservoirs indicates that for the volcanic reservoirs in which the reservoir space consists of fracture and pore, the large-scale horizontal fracturing can increase single well production, reserves producing degree and development benefts, and also be taken as a reference to the other similar reservoirs.

中石油科技重大专项课题“低品位储量资源有效开发技术研究”（2012E-34-08）。

https://doi.org/10.3969/j.issn.1008-2336.2016.04.065