摘要
齐北1井是准噶尔盆地南缘获得突破的重点探井.该井钻探构造高陡,钻遇断裂多,地层变化大,钻前异常地层压力预测尤为重要.在地震地质解释研究的基础上,综合分析了工区内已钻的异常压力分布情况和形成机理,探索了地震速度与地层压力的概念模型,确定了该区地层压力的经验公式,对地震速度进行了合理校正,正确地估算了齐北1井的地层压力,预测结果和完钻后地层压力测试结果一致.
Qibei No. 1 well is the key exploration well broken through in South Junggar Basin. Its penetrated structures are steep and there are many faults and seriously changed formations, so the prediction of abnormal formation pressure before drilling is especially important. On the basis of the studies of seismic and geological interpretations, the paper comprehensively analyzes the abnormal pressure distribution and its generated mechanism within the drilled work block, explores the concept model between seismic velocity and formation pressure determines the empirical formula of this region＇s formation pressure, reasonably corrects the seismic velocity and accurately estimates the formation pressure of this well, so the result＇ s coincidence is gained between the prediction and formation pressure test.
出处
《大庆石油地质与开发》
CAS
CSCD
北大核心
2010年第5期172-174,共3页
Petroleum Geology & Oilfield Development in Daqing
关键词
准噶尔盆地
地震速度
地层压力
压力预测
Junggar Basin
seismic velocity
formation pressure
pressure prediction
