定北区块致密气储层水平井压裂参数优化

发布时间：2018-01-22 17:52

本文关键词： 鄂尔多斯盆地致密气藏水平井压裂参数优化　出处：《石油钻采工艺》2017年02期 　论文类型：期刊论文

【摘要】：水平井多级分段压裂是鄂尔多斯北部定北气田致密气藏开发的有效手段。由于储层较深、物性较差,在定北区块盒1气层的前期压裂施工过程中不断出现砂堵和超压的现象,施工成功率低。为了探索前期加砂困难的原因,优化压裂设计,开展了支撑剂导流能力评价实验、支撑剂在裂缝中通过性物理实验和携砂液运移规律数值模拟等研究。实验结果表明,近井多裂缝及动态缝宽与支撑剂粒径不匹配等因素是导致施工加砂困难的主要原因。对定北盒1储层支撑剂体系、施工排量和砂比进行了优化,现场应用6口井45段,施工成功率达到97.8%,解决了定北区块盒1储层水平井压裂加砂困难的问题,提高了压裂效果,为相关致密气储层水平井的压裂工艺提供技术参考。
[Abstract]:Multistage fracturing in horizontal wells is an effective method for the development of dense gas reservoirs in Dingbei gas field in northern Ordos because of its deep reservoir and poor physical properties. The phenomenon of sand plugging and overpressure appears continuously during the early fracturing process of Bo1 gas reservoir in Dingbei block, and the success rate of construction is low. In order to explore the reasons for the difficulty of adding sand in the early stage, the fracturing design is optimized. Experiments were carried out to evaluate the conductivity of proppant, through physical experiments of proppant in fracture and numerical simulation of sand carrying liquid migration. The experimental results show that. The factors such as near well multiple fractures and the mismatch between dynamic fracture width and particle size of proppant are the main reasons for the difficulty of sand adding in construction. The drainage and sand ratio of Dingbei Box 1 reservoir proppant system are optimized. The field application of 45 section of 6 wells, the success rate of operation reached 97.8, solved the problem of sand adding in the horizontal well of Bo1 reservoir in Dingbei block, and improved the fracturing effect. It provides a technical reference for the fracturing technology of the horizontal well in the tight gas reservoir.
【作者单位】：中国石化石油勘探开发研究院;中国石化海相油气藏开发重点实验室;中国石化华北分公司;
【分类号】：TE377
【正文快照】： Citation:ZHANG Rusheng,LI Kezhi,HUANG Zhiwen.Horizontal well fracturing parameter optimization for the tight gas reser-voir in Dingbei Block[J].Oil DrillingProduction Technology,2017,39(2):249-253.水平井压裂技术已经成为低渗、特低渗油气田勘探和开发的主要

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