地化录井技术在大民屯凹陷潜山储集层的应用

The application of geochemical logging technology in the reservoir of the buried hill in Damintun

辽河坳陷北端大民屯潜山储集层由于受岩性和构造的影响,油藏储集层分布不均,给油气层解释造成一定的困难。为提高解释符合率,以地球化学录井技术为基础,通过对大民屯凹陷潜山段的岩心、井壁取心、岩屑的地化分析,总结出适合大民屯凹陷潜山储集层的地球化学解释方法,并建立了潜山储集层的地化解释标准,当S_1>1.5 mg/g、S_2>1.4 mg/g为油层;当0.4 mg/g<S_1<1.5 mg/g、0.4 mg/g<S_2<1.4 mg/g为低产油层;当S_1<0.4 mg/g、S_2<0.4 mg/g为干层(或水层)。应用该解释标准和方法较好地解决了潜山油气层解释的难题,在该区潜山油气勘探开发中起到了重要的作用。

As the reservoir of the buried hill in Damingtun,which is at the north end of Liaohe depression,is subjected to the influence of lithology and structures,the distribution of the reservoir is uneven,which brings certain difficulties to the interpretation of oil and gas zones.In order to increase the coincidence rate of the interpretation,by taking the geo- chemical logging technology as the basis to analyze the core,sidewall core and cutting in the buried hill interval in Damintun sag,the author summarizes the geochemical in- terpretation method which is suitable for the reservoir of the buried hill in Damintun and establishes the geochemical in- terpretation standards for the reservoir of the buried hill in Damintun,when S_1>1.5 mg/g and S_2>1.4 mg/g,the reservoir is oil bearing zone,when 0.4 mg/g<S_1<1.5 mg/g and 0.4 mg/g<S_2<1.4 mg/g,the reservoir is low yield pay zone,when S_1<0.4 mg/g and S_2<0.4 mg/g, the reservoir is dry(or water)zone.The application of the interpretation standard and method effectively resolves the puzzler of the interpretation of oil and gas zones in the bur- ied hill and plays an important role in the exploration and development of the buried hill of the area.