郑建东,王春燕,章华兵,王晓莲,朱建华
ZHENG Jiandong,WANG Chunyan,ZHANG Huabing,WANG Xiaolian,ZHU Jianhua

• 1:大庆油田有限责任公司勘探开发研究院
• 2:黑龙江省陆相页岩油重点实验室

摘要(Abstract)：

针对古龙页岩油地质评价关键参数不明确、评价标准尚未建立等问题,以配套岩心实验和试油测试资料为基础,通过岩心刻度测井,建立了岩性、孔隙度、含油饱和度、有机碳含量和各向异性地应力等七性参数测井评价方法和富集层分类评价标准。在岩石物理实验基础上,通过七性特征和测井响应关系研究,提出了考虑成熟度、有机碳质量分数(w(TOC))的双参数游离烃质量分数(S_1)测井计算模型、变T_2截止核磁有效孔隙度计算方法和考虑小孔隙含油的二维核磁含油饱和度计算模型,解决了页岩油富集层分类评价和储量提交关键参数解释精度低的问题。在此基础上,根据三品质七性参数与产能关系,优选敏感参数建立了有效厚度下限和富集层测井评价标准。配套形成的以岩性扫描、核磁、成像测井系列为核心的采集和七性参数测井评价技术,为古龙页岩油200多口新老井解释、井位部署和储量提交提供了可靠的基础数据和技术保障,形成的技术流程和方法对国内同类型页岩油储层评价具有指导意义。
In order to solve the problems of undefined key parameters of geological evaluation and unestablished evaluating criteria for Gulong shale oil, based on matched core experiment and productivity testing data, seven-property parameter logging evaluating method and classifying-evaluating criteria of enriched layer for lithology, porosity, oil saturation, organic carbon content and anisotropic in-situ stress are established through core calibration logging. On the basis of petrophysical experiment, through studies on seven-property characteristics and logging response relationship, a dual-parameter free-hydrocarbon mass fraction(S_1) logging calculating model considering maturity(R_o) and organic carbon content w(TOC), a variable T_2-cutoff NMR effective porosity calculating method and a 2 D NMR oil-saturation calculating model considering oil-bearing in small pores are proposed, thus solving the problems of classification and evaluation of shale oil enriched layers and low-accuracy interpretation of key parameters for reserves submission. On this basis, according to relationships between seven parameters and productivity for three qualities, the lower limit of effective thickness and logging evaluating criteria of enriched layers are established by optimizing sensitive parameters. Acquisition and seven-property-parameter logging evaluation technologies taking lithology scanning, NMR and imaging logging series as the core provide reliable basic data and technical supports for interpretations of more than 200 new and old wells, well location deployment and reserves submission for Gulong shale oil, and the developed technical workflow and method have much guiding significance for evaluation of the same type shale oil reservoirs in China.

关键词(KeyWords)： 古龙页岩油;七性关系;测井评价;二维核磁;富集层评价
Gulong shale oil;seven property relationship;logging evaluation;2D NMR;enriched layer evaluation

Abstract:

Keywords:

基金项目(Foundation): 国家科技重大专项“松辽盆地北部致密油资源潜力、甜点区预测与关键技术应用”(2016ZX05046-006-002)

作者(Author): 郑建东,王春燕,章华兵,王晓莲,朱建华
ZHENG Jiandong,WANG Chunyan,ZHANG Huabing,WANG Xiaolian,ZHU Jianhua

DOI: 10.19597/J.ISSN.1000-3754.202107003

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