多油层分层参数测试新方法研究与实践

针对传统的压力恢复/压力降落试井方法存在的测试时间长、影响油井产量、难以获得分层地层参数等缺陷,将生产测井的流量流压资料应用到试井领域,提出了变流量法、流量-压力波动曲线法两种多油层试井新方法,实现了在油井正常生产的情况下,求取井下各小层的地层压力、渗透率、污染系数等分层地层参数,较好地解决了多层合采油井的分层参数测试难题。详细地阐述了两种多油层试井新方法的测试原理,并列举了其现场应用情况。 

NEW TEST METHODS FOR PARAMETERS OF INDIVIDUAL PAY ZONES IN A MULTI-ZONE RESERVOIR: RESEARCH AND PRACTICE

Conventional pressure buildup/drawdown tests of wells have disadvantages such as long test time, influence on well production and difficulty in obtaining parameters of individual pay zones, in regard to these disadvantages, the authors propose two muhi-zone weU test methods, i. e. the variable flow rate method and flow-pressure fluctuation curve method, by using flow rate and pressure data of production logging in well tests, the downhole parameters such as formation pressure, permeability and contamination coefficient for each individual interval in the case of normal production of wells have been obtained using the two new methods and the problem of testing parameters of individual pay zones in a multi-pay zone well has been solved. Furthermore, the authors describe details of the test principle of the two new multi-zone well testing methods and cite the cases of field application,