对水平井ZBX井修正等时试井设计的反思

Rethink on the Design of Modified Isochronal Test for ZBX Horizontal Well

开关井制度是试井设计的核心内容,对于修正等时试井,如何确定开井期间油嘴的大小,在测试现场大多是靠经验设定,常常造成测试失败或增大解释结果的误差。以ZBX水平井为例,讨论了如何选择测试时油嘴大小,以及施工过程中需要考虑的相关因素,认为等时试井之间需要较长时间的开井,以便洗干净整个井筒;对于低渗产能较低气井,测试时油嘴应由小到大。

Open /shut in schedule is the core content of the well test design. For the modified isochronal test,how to determine the scale of the choke during opening of the well is usually set up by experience,that e often induces the failure of test or increasing larger errors. ZBX horizontal well is taken as an example to discuss how to choose the choke sizes and what factors should be considered in the test operation. It will provide references to design well test program for the similar horizontal wells.