临兴区块基于钻井参数的三压力剖面计算方法

Three-pressure Profile Calculation Method Based on Drilling Parameters in Linxing Block

针对临兴区块上部地层没有测井资料,无法对地层做进一步研究的问题,提出了一种基于钻时曲线等钻井参数来预测波速、计算三压力剖面的方法。论证了钻时曲线与波速有较强的关联性,提出了以钻时曲线为核心建立三压力剖面的方法。利用临兴区块现场岩心获取了岩石力学参数,以其中一口井为例,利用提出的模型建立了临兴区块三压力剖面并进行了误差分析。结果显示,此模型准确性好,在测井资料缺失的情况下可以用此模型来计算三压力剖面。

A method based on drilling time curves and other drilling parameters was presented to predict the wave velocity of the three-pressure profile based on the lack of well logging data in the upper part of the Linxing Block. It is demonstrated that the relation between the drilling time curve and the wave velocity is strong. The method of calculating the three-pressure profile using the drilling time curve as the core was established. The rock mechanics parameters were obtained by using the core of Linxing Block. This paper established the three-pressure profile of Linxing Block by using the proposed model and carried out error analysis. The results show that the model is accurate and can be used to calculate the three-pressure profile in the case of missing well logging data.