地层压力监测过程中向下预测实时地层压力技术的开发与应用  

Development and Application of Downward Prediction Technology of Real-time Formation Pressure in Formation Pressure Monitoring Process

作　　者：李红 于忠涛 张野 袁则名 贾雍 张子明 LI Hong;YU Zhongtao;ZHANG Ye;YUAN Zeming;JIA Yong;ZHANG Ziming(Drilling and Production Company,CNOOC Energy Technology and Services Limited,Tianjin 300452,China)

机构地区：[1]中海油能源发展股份有限公司工程技术分公司,天津300452

出　　处：《天津科技》2024年第8期75-78,共4页Tianjin Science & Technology

摘　　要：地层压力的准确监测在窄窗口钻井作业中非常重要。钻井作业前,需要先确定安全密度窗口。地层压力和地质结构复杂,钻前的地层压力预测与监测的地层压力有一定偏差,在实钻过程中会遇到实际地层压力高或低于钻前模型预测,如果处理不当,会引起溢流或漏失等问题。为此介绍一种新的实时预测地层压力的技术,通过拟合钻前模型与监测结果校正地层测试压力数据,提高钻前模型的精确度,并用于待钻井段。该技术在现场施工中取得了较好的应用效果,可为今后实时预测地层压力提供借鉴。Accurate monitoring of formation pressure is crucial in narrow window drilling operations.Before drilling operations,it is necessary to determine the safe density window for drilling operations.Due to the complexity of formation pressure and geological structure,there is a certain deviation between the pre-drilling formation pressure prediction and the monitored formation pressure.During the actual drilling process,the actual formation pressure will be higher or lower than the pre-drilling model prediction.If not handled properly,it can cause problems such as overflow or leakage.This article introduces a new technology for predicting formation pressure in real time.By fitting the pre-drilling model with the monitoring results to correct the formation test pressure data,the accuracy of the pre-drilling model is improved,and the technology has been applied to the section to be drilled.This technology has achieved good application results in on-site construction and can provide reference for real-time prediction of formation pressure in the future.

关 键 词：地层压力 实时监测 异常高压 钻井安全 压力预测 

分 类 号：TE249[石油与天然气工程—油气井工程]