摘要
在砂泥岩地层中,泥质含量的准确求取是油气田储层测井评价的基础。针对在实际生产过程中遇到的高伽马含气地层泥质含量准确计算的难题,通过对储层高伽马成因、常规泥质含量计算方法优缺点、中子-密度曲线含气校正、NDS值与岩心粒度分析资料关系等问题的分析研究,提出一种通过调整权重来综合利用伽马和中子、密度曲线反映的地质信息计算泥质含量的新方法。该方法克服了泥质含量计算过程中对单一某种曲线资料的严重依赖性,为解决该类储层泥质含量准确计算难题提供了一种新的方法。研究方法在莺歌海盆地BV气田实际资料处理过程中应用效果良好。
Obtaining the accurate clay content is the basis for well logging evaluation of oil or gas reservoirs in the sand-shale formations. But it is difficult for us to obtain the accurate clay content of gas reservoir with high gamma. By analyzing the causes of high gamma,the advantages and disadvantages of conventional calculation methods,neutron-density curves gas correction and the Correlation between NDS values and core analysis data,a new method by adjusting the weights of gamma and neutron-density curve is advanced. The new method overcomes the serious dependency on a single curve data for calculating clay content and it has achieved good effects in BV gas field of Yinggehai Basin.
出处
《科学技术与工程》
北大核心
2015年第6期26-31,共6页
Science Technology and Engineering
关键词
高伽马储层
测井评价
泥质含量
含气校正
新方法
high gamma reservoir
logging evaluation
shale content
gas correction
new method
