非接触式随钻地层压力测试方法  

Non-contact While Drilling Formation Pressure Testing Method

作　　者：党博[1] 杨玲 张雄 陈娇 王宇 Dang Bo Yang Ling Zhang Xiong Chen Jiao Wang Yu(Key Laboratory of Education Ministry for Photoelectric Logging and Detecting of Oil and Gas, Xi＇ an Shiyou University, Xi＇ an Shaanxi, 710065)

机构地区：[1]西安石油大学光电油气测井与检测教育部重点实验室,陕西西安710065

出　　处：《电子测试》2017年第10期43-45,共3页Electronic Test

基　　金：国家自然科学基金资助项目(51504194);陕西省教育厅重点学科研究计划(重点实验室)项目(17JS106);西安石油大学博士科研启动项目(2015BS27)

摘　　要：地层压力是保障安全钻井的重要参数,但要想准确地获取地层压力有很大的难度。本文从数字球形聚焦电极系出发,通过与钻杆的相互结合,形成一种以电极系为探测系统的电阻率测量系统,在随钻过程中测量泥浆侵入地层的径向深度,由压力平衡原理出发,结合井筒压力和泥浆侵入深度,给出了地层压力的计算方法。上述过程的关键问题是泥浆侵入深度的测量,论文在给出总体思路的同时,研究了数字球形聚焦电极系统的相关理论和实现方法。The formation pressure is an important parameter for safety drilling, but it is very difficult to get the formation pressure accurately. This article focuses on the digital spherical focusing electrodes combined with each other through the drill pipe. In order to form a detection system, the electric dipole resistivity measurement system is suggest, and it is used to measure the radial invasion depth of drilling mud in the process of drilling. Based on the principle of pressure balance and the fact that wellbore pressure is associated with mud invasion depth, the formation pressure computation method is established.Moreover, the measurement method of mud invasion depth is solved by the resistivity which is measured by the digital spherical focusing electrode system.

关 键 词：地层压力 随钻 泥浆侵入深度 球形聚焦电极出 

分 类 号：TE271[石油与天然气工程—油气井工程]