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酸压改造后的气层,由于酸液未返排完导致井底存在积液,这种层进行系统试井时采用二项式会出现无法回归无法计算无阻流量的情况。本文在目前有关经典试井理论的基础上,建立问题的数学模型,提出了适合气层系统试井异常资料的校正方法,通过拟合方法,使得很多系统试井异常资料获得了有效利用,提高了勘探时效。该方法的提出可以使地质人员更为准确地预测该类测试层的产能信息,提高了测试资料利用率,对后续开发具有重要的指导意义。
The acid gas pressure after the reform of the gas layer, due to the acid back to the bottom of the row there is no effusion, the use of such a layer in the well test binomial will not be able to return can not be calculated unobstructed flow situation. Based on the current theory of well testing, the paper establishes a mathematical model of the problem and proposes a calibration method suitable for abnormal well testing data of gas-bearing system. Through the fitting method, many well-test abnormal data are effectively utilized and improved Expiration of exploration. The proposed method can make geologic personnel forecast the production capacity information of this kind of test layer more accurately and improve the utilization rate of test data, which is of guiding importance to the subsequent development.