油氣田剩余可采儲量、剩余可采儲采比和剩余可采程度的年度評價方法
[Abstract]:The remaining recoverable reserves, the ratio of remaining recoverable reserves and the degree of residual recoverability are the important indexes to judge the current development situation of oil and gas fields, and are the important basis for the decision on whether to carry out the development adjustment or not, so the oil companies all over the world attach great importance to it. According to Chinese industry standards, the methods of evaluating recoverable reserves include water drive curve method, production decline method and prediction model method. The water drive curve method is only applicable to oil fields developed by water drive, while the production decline method and the prediction model method are applicable to any reservoir type that has entered the decline stage. The method used by DeGolyer and MacNaughton and Ryder Scott to evaluate the value of remaining recoverable reserves in oil and gas fields in China is by the Securities and Exchange Commission of the United States. A variation formula for decreasing Arps exponent will be provided by multi-departmental teams. By using the generalized exponential decline method suitable for different development models, the annual economic recoverable reserves, remaining economic recoverable reserves, technical recoverable reserves and remaining technical recoverable reserves of oil and gas fields are derived. The formula for calculating residual recoverable ratio and residual recoverable degree is given, and the variation index decline method used by DeGolyer and MacNaughton Company is explained and evaluated. The practical application results in 8 oilfields show that the calculation method provided by the author is practical and effective.
【作者單位】: 中國石油勘探開發(fā)研究院;
【分類號】:TE328
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