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在海上录井随钻解释工作开始时间并不长、解释符合率还不是很高的情况下,如何捕捉钻井中的油气显示层,开展定量评价油气层,特别是不漏掉薄层、轻质油气层及低电阻率油气层,具有极其重要的意义。Reserval气体比率法利用轻烃与中烃比率(RLM)、轻烃与重烃比率(RLH)以及重烃与中烃比率(RHM)曲线的组合形态,可以指示不同的储集层流体性质,甚至可根据它们的变化很容易地辨认出油水界面,较好地解决了渤海海上常用方法无法解释的问题。利用以Reserval气体比率法为主,结合其他录井等相关资料,对渤海探区BZ油田已钻的19口井进行解释评价,结果显示:气层解释符合率100%,油层解释符合率87.3%,油水同层符合率62.5%,水层符合率73.7%,总体符合率达到83.9%。Reserval气体比率法的应用,提高了渤海轻质油、凝析油、低电阻率油层的解释精度。
The drilling logging interpretation work at sea is not taking long time to start. How to capture the oil and gas display layer in drilling wells and quantitatively evaluate the hydrocarbon reservoir under the condition of not very high agreement rate, especially the thin layer, light weight Oil and gas layers and low resistivity oil and gas layers, with extremely important significance. The Reserval gas ratio method utilizes different combination of light hydrocarbon to medium hydrocarbon ratio (RLM), light hydrocarbon to heavy hydrocarbon ratio (RLH), and combination of heavy to medium hydrocarbon ratio (RHM) curves to indicate different reservoir fluid properties or even According to their changes, the oil-water interface can be easily identified, which solves the problem that can not be explained by the commonly used methods in the Bohai Sea. Based on the Reserval gas ratio method and other relevant logging data, the 19 wells drilled in the BZ oilfield of Bohai exploration area are interpreted and evaluated. The results show that the coincidence rate of gas reservoir interpretation is 100% and that of reservoir interpretation is 87.3% , Oil-water conformance rate of 62.5%, water conformance rate of 73.7%, the overall compliance rate reached 83.9%. Reserval gas ratio method to improve Bohai light oil, condensate, low resistivity interpretation of the reservoir accuracy.