水平井合理生产压差确定方法筛选与优化  

Selection and Optimizing Method for Determining Reasonable Drawdown Pressure of Horizontal Wells

作　　者：曹鹏 邹伟宏 常少英 戴传瑞 罗宪婴 闫晓芳 刘江丽 

机构地区：[1]中石油杭州地质研究院,浙江杭州310023

出　　处：《石油天然气学报》2014年第4期111-116,120,共7页Journal of Oil and Gas Technology

基　　金：国家科技重大专项(2011ZX05004);中国石油科技重大专项(2010E-2106)

摘　　要：自从20世纪20年代末水平井技术问世以来，国内外学者针对水平井的产能预测、临界产量和见水时间预测等方面进行了较为深入的研究，但是针对水平井如何选取合理的生产压差进行开采的报道较少。通过整理分析前人研究成果的基础上，主要介绍了不同产量预测模型的筛选方法与技术思路，并形成了利用油藏工程法与统计学方法相结合确定油井合理生产压差的新方法。针对中国西部某油田，水平井在含水0％～30％、30％～60％和大于60％的合理生产压差分别取临界生产压差的（1．8～4．8）倍、（2．3～6．O）倍和（2．8～7．5）倍，该方法具有实际操作性，有利于指导实际生产需要，其技术思路可以推广应用。Since the advent of horizontal well technology in late 1920s,the scholars both at home and abroad deeply studied the productivity,critical production,and breakthrough time prediction of horizontal wells.However,there were less reports on selecting reasonable drawdown pressure of production in horizontal wells.The method of selecting different production predicting models for the horizontal wells was mainly introduced based on the analysis of predecessorsresearch results.And new methods were established for determining the reasonable drawdown pressure in combination of reservoir engineering with statistical method.In allusion to situation of the oilfields in western China, for water content of 0%~30%,30%~60% and higher than 60%,the reasonable drawdown pressures were 1.8~ 2.8,2.3~6.0and 2.8~7.5times of the critical pressure respectively.The method is easy operation,it can be used for guiding practical production,and its technical approaches can be popularized in oilfields.

关 键 词：水平井 产能指数 临界产量 合理生产压差 

分 类 号：TE328[石油与天然气工程—油气田开发工程]