一种电缆测压数据应用新方法

A New Method for Interpretation of Cable Pressure Data

曹军 郝仲田 张向前 关印

CAO Jun HAO Zhongtian ZHANG Xiangqian GUAN Yin

中海油能源发展股份有限公司工程技术分公司, 天津 300452; 中海石油(中国)有限公司天津分公司工程技术作业中心, 天津 300452

Engineering and Technology Branch of CNOOC Energy Development Limited Company, Tianjin 300452, China; Engineering and Technical Operations Center of CNOOC Tianjin Branch, Tianjin 300452, China

在渤海油田，电缆测压取样技术应用十分广泛。传统的压力数据解释主要是将地层压力与其深度做交会图，线性回归计算流体密度并判断流体界面。此文是基于该方法，在多年从事测压作业经验的基础上发现的一种地层压力系数与深度之间的规律，并推导了压力系数与深度之间的关系式，对关系式进行了一定的讨论，讨论结果恰与事实规律相符，可以作为一种对测压数据进行解释的新方法，获得了几种测压数据的新用途。

Cable pressure sampling technique has been used widely in Bohai Oilfield. In the conventional method, the interpretation of pressure data is commonly conducted by plotting the cross plot of formation pressure with depth, and calculating the fluid density by linear regression, and then determining the fluid interface. Based on the principles of the conventional method and the experience and inspiration obtained from the pressure measuring operation in many years, the authors summarized the rule of formation pressure coefficients changing with the depth and inferred the relationship between the pressure coefficient and the depth. The formula matches with the actual situations well and has been applied successively in practice. Therefore, it can be used as a new method for the interpretation of pressure-measuring data.

https://doi.org/10.3969/j.issn.1008-2336.2016.02.062