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1. 发明申请

WO2014008095A2 METHOD AND SYSTEM FOR MEASURING AND CALCULATING A MODIFIED EQUIVALENT CIRCULATING DENSITY (ECDM) IN DRILLING OPERATIONS 审中-公开
标题翻译：在钻井操作中测量和计算改进的等效循环密度（ECDM）的方法和系统
公开(公告)号：WO2014008095A2
公开(公告)日：2014-01-09
申请号：PCT/US2013/048204
申请日：2013-06-27
申请人： INTELLISERV INTERNATIONAL HOLDING, LTD. , ADSIT, Rhys Kevin
发明人： ADSIT, Rhys Kevin
IPC分类号： E21B21/08
CPC分类号： E21B21/08 , E21B44/00
摘要： A method for collecting and analyzing downhole pressure data includes disposing a plurality of pressure sensors at axially spaced locations along a drill string disposed in a well. A first data set that includes a data point for each of the pressure sensors is collected. Each data point includes a pressure value and a depth value. A value of modified equivalent circulating density (ECDm) is calculated for at least one data point. ECDm includes a static pressure component and a dynamic pressure component. Calculating the ECDm includes computing the static pressure component based on the true vertical depth of the pressure sensor, and computing the dynamic pressure component based on a second depth value that differs from the true vertical depth and is common to all the pressure sensors for which ECDm is calculated.
摘要翻译：用于收集和分析井下压力数据的方法包括沿着设置在井中的钻柱的轴向间隔开的位置设置多个压力传感器。收集包括每个压力传感器的数据点的第一数据集。每个数据点包括压力值和深度值。对于至少一个数据点计算修改的等效循环密度（ECDm）的值。 ECDm包括静压分量和动压分量。计算ECDm包括基于压力传感器的真实垂直深度来计算静态压力分量，以及基于与真实垂直深度不同的第二深度值计算动态压力分量，并且对于所有压力传感器是常见的，ECDm 被计算。

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