岩性油气藏 ›› 2017, Vol. 29 ›› Issue (5): 134–139.doi: 10.3969/j.issn.1673-8926.2017.05.016

• 油气田开发 • 上一篇    下一篇

渭北油田浅层油藏产能预测方法

陈明强1, 王宁1, 张阳2, 任龙1   

  1. 1. 西安石油大学石油工程学院, 西安 710065;
    2. 中国石化华北油气分公司采气一厂, 郑州 450000
  • 收稿日期:2017-04-06 修回日期:2017-05-12 出版日期:2017-09-21 发布日期:2017-09-21
  • 作者简介:陈明强(1963-),男,博士,教授,主要从事油气田开发理论与方法、油气藏数值模拟与仿真技术、计算机软件与智能应用等方面的教学和科研工作。地址:(710065)陕西省西安市雁塔区西安石油大学石油工程学院。Email:13891953327@163.com。
  • 基金资助:
    国家重大科技专项“低丰度致密低渗油气藏开发关键技术”（编号：2016ZX05048）资助

Productivity prediction method of shallow reservoir inWeibei Oilfield

CHEN Mingqiang1, WANG Ning1, ZHANG Yang2, REN Long1   

  1. 1. College of Petroleum Engineering, Xi'an Shiyou University, Xi'an 710065, China;
    2. No. 1 Gas Production Plant, North China Oil and Gas Company, Sinopec, Zhengzhou 450000, China
  • Received:2017-04-06 Revised:2017-05-12 Online:2017-09-21 Published:2017-09-21

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摘要： 针对渭北油田浅层油藏天然裂缝对油井产能影响较大的问题，基于渗流理论及分形理论，通过引入分形维数来表征天然裂缝发育程度，建立了考虑天然裂缝的低渗透油藏垂直裂缝井产能预测数学模型，并结合实际矿场数据验证了该模型的准确性，分析了天然裂缝发育程度对米采油指数的影响，揭示了渭北油田浅层油藏的产能特征。结果表明：天然裂缝有效改善了低渗储层整体的渗透性，压裂后油井产能随天然裂缝的发育程度近似呈指数式增加。因此，在对渭北油田浅层油藏进行储层改造时，在天然裂缝发育区适当提高压裂规模可大幅提高产能，同时应最大限度地减少对天然裂缝的破坏及污染。研究结果对合理开发同类油藏具有借鉴作用。

关键词: 地震叠后数据, Contourlet变换, 图像增强, 小断裂, 裂缝预测

Abstract: Natural fractures have great influences on the productivity of oil wells in shallow and low permeability reservoir in Weibei Oilfield. Based on the percolation theory and fractal theory,the permeability of natural fractures was characterized by introducing fractal dimension and analyzing the development degree of natural fractures influences of the specific productivity index per-meter in shallow reservoir of Weibei Oilfield,and a productivity forecast mathematical model of vertically fractured well was established in low permeability and fractured reservoir to reveals the productivity characteristics. The results show that the permeability of the low permeability reservoir is improved effectively by natural fractures,and the productivity of the oil wells is almost increased exponentially along with the development degree of the natural fractures after fracturing. Consequently,enlarging the fracturing scale appropriately can greatly improve the productivity in natural fracture development zones when reforming the shallow reservoir. Meanwhile,it's the best to minimize the damage and pollution to the natural fractures. The results have a certain reference value for the rational development of similar reservoirs.

Key words: seismic post-stack data, Contourlet transform, image enhancement, small-scale faults, fracture prediction

中图分类号: 

  • TE35
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