鄂尔多斯盆地Q地区低孔渗气层的综合识别技术

Comprehensive Identification Technology of Low porosity and Permeability Gas Reservoirs in Q Area of Ordos Basin

鄂尔多斯盆地中部地区是我国大中型气田勘探的重点地区,在勘探开发中积累了录井中识别气层的丰富现场经验。本文针对鄂尔多斯盆地Q地区低孔渗气层,结合该地区天然气钻探现场的动静态第一手资料,并结合研究中采用的各类判识标准,建立了中部气田Q地区气层、含气层、非含气层的判识技术,评价参数及定量评分分值域和综合分值标准,从而为勘探过程中气层判识提供了依据,也为天然气勘探乃至开发评价提供了有效方法。

The central area of the Ordos Basin is a key area for the exploration of large and medium gas fields in China, and the rich field experience of identifying gas reservoirs in logging is accumulated in exploration and development. In this paper, the low porosity and permeability gas reservoirs in Q region of Ordos basin based on the first-hand data of the natural gas drilling site in this area, and combined with the various standards adopted in the study, the identification technology, evaluation parameters, quantitative scoring points and comprehensive score criteria for the gas reservoir, gas bearing zone and non gas bearing region in Q area of the central gas field are established. It provides the basis lbr the determination of gas layer in the exploration process, and provides an effective method for the exploration and even development evaluation.