摘要
以阵列全波列声波测井资料为主，结合常规测井、高分辨率地层倾角测井资料以及RFT地层压力测井资料对地层岩石综合力学机械特性进行了深入的分析。在正确、合理地处理资料并计算数据的基础上，重点讨论了岩石破裂压力在井眼稳定性分析中的作用。特别是钻井过程中钻井液比重的确定。利用数理统计的方法得到了区域性声波阻抗与横渡时差的经验公式，对于没有进行全波列声波测井的井也可以由该公式计算出横波时差，从而进一步求出岩石弹性力学参数。利用岩石自然破裂压力系数在裂缝发育段预测合理钻井液比重取得良好的效果。
The article analyzes the formation rockmechanics based mainly on full wave train acousticlogging data with conventional logging, highresolution diplog and formation pressure logging ofRFT data. Having been interpretated and calculatedthe data reasonaly, the discussion is focused on theeffect of rock fracture pressure on borehole stabilityanalysis, especially on the determination of mudweight during drilling. The empirical equation ofrelationship between regional acoustic impedance andsheax wave moveout is obtained using mathematicalstatistics method. The shear wave moveout can alsobe calcuiated by this equation for the wells withoutfull wave train acoustic logging, and elastic mechanicsparameters of rock can be further obtained furtherly.It is effective to predict reasonable mud weight infracture intervals using natural break down pressureof rock.
出处
《断块油气田》
CAS
2000年第3期33-35,共3页
Fault-Block Oil & Gas Field
