Abstract: This paper gives a study of the low permeability gas reservoir in upper Paleozic in northern Shanxi Province. Display of complete hydrocarbon data, background value of gas logging, thickness displayed, pay thickness, bit diameter, coring interval, and drilling time of sandstone and mudstone are considerated in actual field operations and then calibrated and normalized to obtain a ratio between the average equivalent gas content and the drilling time, so that a better correlatability between wells as well as formation is obtained. Thus, quantitative identification of the gas logging interpretation technique for a low permeability gas reservoir is developed. According to the results from field practice, conformance of such an interpretation technique is 80% and higher.

摘要： 本文以陕北上古生界地层为研究对象,应用现场采集的全烃显示值、气测基值、显示厚度、储层厚度、钻头直径、取芯井段、砂岩和泥岩钻时等八种参数,通过校正和归一化处理,计算出地层的平均等效含气量和钻时比值,从而提高了井之间、层之间的可比性,使低渗透砂岩气层的气测解释技术向量值判别发展.经现场应用,解释符合率达80%以上.

关键词: 低渗透气藏, 砂岩, 储气层, 气测, 测井解释