摘要
本文根据岩石孔隙中的天然气引起中子测井孔隙度减小和密度测井孔隙度增大的原理，建立了含氢指数重迭找气新方法，消除了岩性的影响，提高了测井找气的分辨率，增强了评价气层的直观性。该方法用于寻找陕甘宁盆地低孔隙白云岩气藏，获得了明显的地质效果。这种方法还可以在其它储层岩性气藏中应用。
Based on the principle that natural gas in rock pores gives a reduction of neutron porosity and an increment of density porosity. This paper formulates a new hydrogen index curve overlapping method for gas exploration. This method eliminates the lithological effect, improves the resolution of gas-showing and makes the evaluation of gas zones more self-evident. Positive results have been achieved by applying the new method to the gas exploration in low porosity dolomite reservoirs in Shanganning basin. It can also be used in other gas zones with different lithological composition.
出处
《石油勘探与开发》
EI
CAS
CSCD
北大核心
1994年第6期15-20,共6页
Petroleum Exploration and Development
关键词
测井
孔隙度
气藏
油气勘探
neutron log, density log, gas reservoir, hydrogen index
