吐哈盆地小草湖洼陷低孔隙度低渗透率储层测井评价

Log Evaluation for Low Porosity and Low Permeability Reservoir in Xiao Caohu Sag,Tuha Basin

吐哈盆地小草湖洼陷红台油气田的低孔隙度、低渗透率、低电阻率储层的特点是测井解释和储层评价的一个难题。综合应用各种资料进行储层评价和油气层识别是解决问题的有效手段,加强对钻井取心、分析化验资料的利用,对快速建立“四性”关系和进一步精细解释奠定了基础。介绍了利用单井测井资料纵向对比和多井测井资料横向对比方法识别油气水层的概况,重点叙述了气测组份分析识别流体、孔隙度计算经验公式与试油图版、时间推移测井识别油气水层的经验,以及偶极子声波测井的应用等。利用上述评价技术对小草湖洼陷红台油气田低产层采取的改造新增133.4×108m3的天然气地质储量。

Aimed at the reservoir of Hongtai Oil-gas Field in Xiao Caohu sag, Tuha Basin, where is characterized by low porosity, low permeability and low resistivity, this paper introduces the general situation of applying vertical stratigraphic correlation for individual well and inter-well lateral correlation for multi-well, in which the experiences on component analysis of gas logging, time-lapse logging to identify fluid, as well as the application of acoustic dipole log are elaborated. The application of the techniques above mentioned has increased extra 133. 4 × 10^8 m^3 OOIP of natural gas.