钻井机械能效地层压力监测新方法在南海莺琼盆地的应用  

Application of new method for formation pressure monitoring of drilling machinery energy efficiency in Yingqiong Basin,South China Sea

作　　者：陈现军 郭书生 王世越 毛敏 刘为 郭冲 赵凯[3] CHEN Xianjun;GUO Shusheng;WANG Shiyue;MAO Min;LIU Wei;GUO Chong;ZHAO Kai(Hainan Branch of China France Bohai Geoservices Company Limited,Haikou 570312,China;CNOOC China Limited,Hainan Branch,Haikou 570312,China;College of Petroleum Engineering,Xi̍an Shiyou University,Xi̍an 710065,China)

机构地区：[1]中法渤海地质服务有限公司海南分公司,海南海口570312 [2]中海石油(中国)有限公司海南分公司,海南海口570312 [3]西安石油大学石油工程学院,陕西西安710065

出　　处：《中国石油大学学报（自然科学版）》2024年第3期188-197,共10页Journal of China University of Petroleum(Edition of Natural Science)

基　　金：国家自然科学基金项目(52074224)。

摘　　要：南海莺琼盆地超压成因复杂,传统的地层压力监测方法现场应用局限性较大。基于此采用基于钻井机械能效的地层压力监测新方法通过破岩效率分析实时反演地层压力。结果表明:MSE数据对加载和卸载型超压均有较好的响应特征,且随钻定量监测结果与实测数据吻合度较高;该区域超压起于莺歌海组二段,黄流组超压显著,存在地层压力“台阶”现象。新方法的经验参数选取方便,可直接通过随钻参数对地层压力进行实时监测,相对于传统的Dc指数等方法,定量计入了扭矩的影响,并联合测井数据进行综合评价,监测结果更为可靠。The mechanism of formation overpressure in the Yingqiong Basin of the South China Sea is complex,and the traditional formation pressure monitoring methods have great limitations in field application.Based on this,a new monitoring method in the light of the drilling machinery energy efficiency was adopted,which can invert the formation pressure in real-time through the analysis of rock-breaking efficiency.The result shows that,the MSE data have good response characteristics for both loading and unloading overpressures,and the quantitative monitoring result is in good agreement with the measured data.Meanwhile the overpressure originated from the second member of Yinggehai Formation,and the overpressure in the Huangliu Formation is significant.In some cases,the formation pressure "step" phenomenon occurs.The empirical parameters are easy to select,and the formation pressure can be monitored in real-time directly through the parameters while drilling.Compared with the traditional Dc index and other methods,the influence of torque is quantitatively considered,and the logging data are combined for comprehensive evaluation,so the monitoring results are more reliable.

关 键 词：南海 莺琼盆地 地层压力 监测 机械能效 

分 类 号：TE21[石油与天然气工程—油气井工程]