重庆科技学院学报（自然科学版）2024，Vol.26Issue(1)：21-26,6.DOI:10.19406/j.issn.1673-1980.2024.01.004
基于气测录井的高温高压地层压力随钻监测技术
Monitoring Technology of Formation Pressure While Drilling Under High Temperature and High Pressure Based on Gas Logging
摘要
Abstract
Based on the basic principle of gas logging pressure monitoring,the calculation methods of static equiva-lent mud density(ESD)and circulating equivalent mud density(ECD)of drilling fluid under high temperature and high pressure formation are presented.On this basis,monitoring,while drilling,on formation pressure of well under high temperature and high pressure is carried out.It is found that when the bottom-hole pressure difference increases,the gas measurement decreases exponentially,and when the bottom-hole pressure is over-balanced,the gas measurement will not decrease to 0,but maintain a low level.Based on this analysis,the correlation between circulating gas and circulating pressure difference as well as single gas and static pressure difference is established,and the correlation equation between bottom hole pressure difference and gas measurement value is established to e-valuate the formation pressure qualitatively and quantitatively.关键词
气测录井/地层压力/随钻监测/高温高压Key words
gas logging/formation pressure/monitoring while drilling/high temperature and pressure分类
能源科技引用本文复制引用
田立强,陈现军,付群超..基于气测录井的高温高压地层压力随钻监测技术[J].重庆科技学院学报（自然科学版）,2024,26(1):21-26,6.基金项目
中国海洋石油有限公司"十四五"重大科技项目"海上深层/超深层油气勘探技术"(KJGG2022-0405) （KJGG2022-0405）
