摘要
气测录井数据是目前录井综合解释的主要基础资料,然而受井径、钻时、钻井液排量、钻井液密度等因素的影响,在井口检测到的岩层气测值与地层的真实含气量总有一定的差异。针对渤海湾海洋录井技术,在前人研究成果的基础上,总结出一个地层含气量校正公式。通过实际应用表明,该校正方法不仅能消除钻井工艺方面的影响,还能消除不同井眼、不同工程参数对气测值的影响,提高气测值的横向和纵向对比性,增强气测录井解释图板的规律性,因而有利于提高录井解释符合率。
Gas logging data are the main basic data for comprehensive interpretation of mud logging at present.However,influenced by such factors as borehole diameter,drilling time,drilling fluid displacement and drilling fluid density,there is always a certain difference between the measured value of formation gas at the wellhead and the true gas concentration of the formation.Based on the previous research results,a correction formula of formation gas content is summarized for marine mud logging technology in Bohai Bay.The application shows that the correction method can not only eliminate the influence of drilling technology,but also eliminate the influence of different borehole and different engineering parameters on gas logging value,improve the horizontal and vertical correlation of gas logging value,and enhance the regularity of gas logging interpretation chart.Therefore,it is beneficial to improve the coincidence rate of mud logging interpretation.
出处
《录井工程》
2018年第3期65-69,114-115,共5页
Mud Logging Engineering
关键词
气测值
钻时
井径
钻井液排量
录井解释
gas logging value
drilling time
borehole diameter
drilling fluid displacement
mud logging interpretation
