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低渗透或低压地层的测井资料往往是很难解释的 ,原因是地层中没有用于常规解释方法所需的稳定的流量。新近研究的脉冲试验技术能够通过压力恢复试井确定地层压力。此项技术是以解决瞬时源的井筒压力方法为基础 ,包括续流效应。该技术适用于不同流动状态 ,如圆柱形的径向流。并适用于各种油井 /试验设备 ,如在水平井和垂直井中的中途测试和电缆式地层测试。这种新方法还适用于未胶结地层的井眼 ,这样的地层在井自喷期产砂堵塞井眼
Well logging data from low-permeability or low-pressure formations are often difficult to interpret due to the lack of a steady flow rate required for routine interpretation in the formation. The newly developed pulse test technique enables formation pressure to be determined through pressure recovery well testing. This technique is based on a wellbore pressure solution to transient sources, including freewheeling. The technology is suitable for different flow conditions, such as cylindrical radial flow. And is suitable for a variety of well / test equipment such as mid-range and cable-based formation testing in horizontal and vertical wells. This new method is also suitable for boreholes in unconsolidated formations, where such formations block the wellbore