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单相注入 /压降工艺主要用于煤层气测试 ,在油气井中很少应用。采用目前常规的压降或恢复法对低渗透油藏进行测试 ,由于油层渗透性差、产量低、恢复时间长等诸多因素限制 ,很难收集到理想的数据进行分析评价。而在低渗透油藏中采用注入 /压降工艺进行测试 ,可在较少投入和较短的时间内取全取准各项数据 ,并能求得准确的地层参数。
Single-phase injection / pressure drop process is mainly used for CBM testing, rarely used in oil and gas wells. Using the conventional pressure drop or recovery method to test low permeability reservoirs, it is difficult to collect the ideal data for analysis and evaluation because of the limitations of many factors such as poor permeability, low output and long recovery time. In the low-permeability reservoirs, the injection / pressure drop process is used for testing. The data can be obtained in less time and with less investment and the accurate formation parameters can be obtained.