古龙页岩油储层岩石热解参数S1值校正方法

doi:10.3969/j.issn.1672-9803.2022.02.001

录井工程 ›› 2022, Vol. 33 ›› Issue (2): 1-7.doi: 10.3969/j.issn.1672-9803.2022.02.001

• 工艺技术 • 下一篇

古龙页岩油储层岩石热解参数S₁值校正方法

王俊, 杨世亮, 张丽艳, 肖光武, 张艳茹, 李菁

中国石油大庆油田钻探工程公司地质录井一公司

收稿日期:2022-03-20 出版日期:2022-06-25 发布日期:2022-07-11
作者简介:王俊高级工程师,1982年生,2006年毕业于中国地质大学(武汉)资源勘查工程专业,从事录井技术质量管理工作。通信地址:163411 黑龙江省大庆市让胡路区大庆钻探地质录井一公司资料解释评价中心。电话:(0459)5684238。E-mail:wangjun_lj@petrochina.com.cn
基金资助:
中国石油天然气股份公司重大科技专项“松辽盆地北部石油精细勘探技术完善与规模增储”(编号:2016E-0201)

Correction method of rock pyrolysis parameter S₁ in Gulong shale oil reservoir

WANG Jun, YANG Shiliang, ZHANG Liyan, XIAO Guangwu, ZHANG Yanru, LI Jing

No.1 Mud Logging Company of CNPC Daqing Drilling &Exploration Engineering Corporation, Daqing, Heilongjiang 163411, China

Received:2022-03-20 Online:2022-06-25 Published:2022-07-11

摘要/Abstract

摘要： 古龙页岩油储层具有非均质性强、气油比高、流动性好等特点,含油性评价是古龙页岩油储层综合评价中最重要的评价内容。岩石热解S₁值是该区页岩油储层含油性评价的重要参数,然而受油基钻井液有机溶剂污染和轻烃挥发逸散影响,目前该项参数应用仅停留在定性评价层次,距离横向对比定量应用还有较大差距。根据GB/T 18602-2012《岩石热解分析》TOC计算公式中复合参数(0.083S₂+0.1S₄)与TOC,以及S₁与TOC的对应关系,通过建立油基钻井液岩屑S₁值污染剔除校正方法,先将S₁测量值校正至水基钻井液条件下,再进行轻烃挥发校正;然后利用储层成熟度建立轻烃挥发校正公式,将水基钻井液体系下测量的岩屑S₁值分别校正至常规岩心和保压岩心状态,实现该项数据的定量应用,从而解决该区页岩油储层含油性准确评价难题。应用实践表明,该方法具有简便、直观的特点,应用效果较好。

关键词: 古龙页岩油, 油基钻井液, 岩石热解, 常规岩心, 保压岩心, 污染校正, 挥发校正

Abstract: Gulong shale oil reservoir has such characteristics as strong heterogeneity, high gas-oil ratio and good fluidity and thus oil-bearing evaluation becomes the most important content in the comprehensive evaluation of Gulong shale oil reservoir. As an important parameter of oil-bearing evaluation in the shale oil reservoir in this area, rock pyrolysis S₁ is only at a qualitative evaluation level, and there is still a large gap at horizontal comparison and quantitative application due to the influence of organic solvent pollution and light hydrocarbon volatilization of oil-based drilling fluid. According to the corresponding relationship between the compound parameter (0.083S₂+0.1S₄) and TOC, between S₁ and TOC in the TOC calculation formula in GB/T 18602-2012 "Rock Pyrolysis Analysis", a pollution removing correction method of S₁ of oil-based drilling fluid cuttings is established. First, S₁ measurement values are corrected to water-based drilling fluid conditions, and the light hydrocarbon volatilization is also corrected. Second, correction formula of light hydrocarbon volatilization are carried out by using reservoir maturity, and S₁ of cuttings measured in water-based drilling fluid system are corrected to the state of conventional core and pressure-retaining core respectively, which realize the quantitative application of the data and resolve the difficulties of accurately evaluating oil content of shale oil reservoir in this area. The application reveals that this method is simple and intuitive, and has achieved good effects.

Key words: Gulong shale oil, oil-based drilling fluid, rock pyrolysis, conventional core, pressure-retaining core, pollution correction, volatilization correction

中图分类号:

TE 132.1

王俊, 杨世亮, 张丽艳, 肖光武, 张艳茹, 李菁. 古龙页岩油储层岩石热解参数S₁值校正方法[J]. 录井工程, 2022, 33(2): 1-7.

WANG Jun, YANG Shiliang, ZHANG Liyan, XIAO Guangwu, ZHANG Yanru, LI Jing. Correction method of rock pyrolysis parameter S₁ in Gulong shale oil reservoir[J]. Mud Logging Engineering, 2022, 33(2): 1-7.

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古龙页岩油储层岩石热解参数S₁值校正方法

Correction method of rock pyrolysis parameter S₁ in Gulong shale oil reservoir

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