特低渗透、超低渗透油藏试井设计可行性研究  

The Feasibility Analysis of Well Test Design in Ultra-Low Permeability Reservoirs

作　　者：马素俊[1] 程时清[1] 赵继勇[2] 陈健文[2] 何永鸿[2] 

机构地区：[1]中国石油大学(北京)教育部石油工程重点实验室,北京102249 [2]长庆油田公司,陕西西安710021

出　　处：《油气井测试》2009年第1期1-4,共4页Well Testing

基　　金：国家863项目"特殊结构井开发油藏工程技术"(合同编号2006AA09Z338)资助

摘　　要：针对特低渗透油藏试井测试中存在的合理测压时间问题,通过稳定试井设计计算,首先判断特低渗透油藏油井压裂裂缝的闭合情况,得到了确定压裂裂缝是否闭合的方法;其次通过产能指示曲线是否与压力轴相交,提出了确定特低渗透砂岩油藏启动压力梯度的一种方法;同时,通过对特低渗、超低渗透油藏在不同工作制度下的多井试井设计,详细论证了多井干扰及脉冲试井在特低渗透油藏中的可行性及合理的工作制度。研究表明,特低渗、超低渗透油藏成功实施稳定试井、脉冲试井,并通过这些试井进行压力梯度、井间连通性参数研究。For solving the problem about how long the test in ultra-low permeability reservoirs should last,a method for judging whether the induced fracture of a well is closed is obtained by systematic well test design calculation firstly; then another method for determining the start-up pressure gradient in ultra-low permeability sandstone reservoirs by index curve analysis is provided; and,the feasibility and feasible working system for design of interference or impulse test in ultra-low permeability reservoirs are discussed in detail. The study indicates that systematic well test and impulse test can be run successfully in low or ultra-low permeability reservoirs,and by which the start-up pressure gradient and the parameters about connection between wells can be obtained.

关 键 词：特低渗透油藏 试井设计 稳定试井 干扰试井 

分 类 号：TE348[石油与天然气工程—油气田开发工程] TE373