膏盐岩含量对成熟阶段页岩生烃影响的模拟实验

孟庆强; 李京洲; 刘文汇; FuQi; 王晓锋; 王杰

doi:10.3969/j.issn.1006-6535.2022.05.016

特种油气藏 >

2022 , Vol. 29 >Issue 5: 113 - 118

DOI: https://doi.org/10.3969/j.issn.1006-6535.2022.05.016

油藏工程

膏盐岩含量对成熟阶段页岩生烃影响的模拟实验

孟庆强 ,
李京洲 ,
刘文汇 ,
FuQi ,
王晓锋 ,
王杰

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1.页岩油气富集机理与有效开发国家重点实验室,北京 102206;
2.中国石化石油勘探开发研究院,北京 102206;
3.中国石油冀东油田分公司,河北唐山 063200;
4.西北大学,陕西西安 710127;
5.Experimental Organic Geochemistry Laboratory,University of Houston,Houston U.S.A 77092;
6.中国石化石油勘探开发研究院,江苏无锡 214126

孟庆强(1978—),男,高级工程师,2000年毕业于山东科技大学地质工程专业,2009年毕业于中国石油大学(北京)矿产普查与勘探专业,获博士学位,现主要从事石油与天然气地球化学的基础理论及应用技术研究。

收稿日期: 2021-12-17

修回日期: 2022-05-12

网络出版日期: 2023-01-10

基金资助

国家自然科学基金“海相含膏岩盐层系烃源岩发育特征与生烃潜力评价”(U1663201)

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Simulation Study on the Effect of Gypsum-salt Content on Hydrocarbon Generation in Mature Stage Shale

Meng Qingqiang ,
Li Jingzhou ,
Liu Wenhui ,
Fu Qi ,
Wang Xiaofeng ,
Wang Jie

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1. State Key Laboratory of Shale Oil and Gas Enrichment Mechanisms and Effective Development, Beijing 102206, China;
2. SINOPEC Petroleum Exploration and Production Research Institute, Beijing 102206, China;
3. PetroChina Jidong Oilfield Company, Tangshan, Hebei 063200, China;
4. Northwest China University, Xi′an, Shaanxi 710127, China;
5. Experimental Organic Geochemistry Laboratory, University of Houston,Houston, U.S.A 77092;
6. SINOPEC Petroleum Exploration and Production Research Institute, Wuxi, Jiangsu 214126, China

Received date: 2021-12-17

Revised date: 2022-05-12

Online published: 2023-01-10

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摘要

中国海相和陆相盆地烃源岩层系中均发育厚度不等的膏盐岩层,为探究膏盐岩含量变化对烃源岩生烃过程及产物特征的影响规律,以美国二叠盆地Eagle Ford组页岩为烃源岩,通过添加不同质量分数的天然膏盐岩开展生烃模拟实验,分析滞留于固态反应物中液态产物的特征。结果表明:随着膏盐岩质量分数的增加,海相烃源岩滞留烃产率呈现“先降低再升高”的U型曲线特征,且膏盐岩含量与饱和烃的相对含量呈线性关系,膏盐岩可显著改善原油品质;膏盐岩含量与Pr/Ph、U/R等生物标志化合物参数值正相关,参数应用时需充分考虑膏盐岩含量的影响。研究成果对精确评价页岩油储量潜力、明确页岩油品质变化主控因素具有重要参考作用。

关键词： 膏盐岩; 滞留烃; 生烃; 页岩; Eagle Ford组

本文引用格式

孟庆强 , 李京洲 , 刘文汇 , FuQi , 王晓锋 , 王杰 . 膏盐岩含量对成熟阶段页岩生烃影响的模拟实验[J]. 特种油气藏, 2022 , 29(5) : 113 -118 . DOI: 10.3969/j.issn.1006-6535.2022.05.016

Abstract

Gypsum-salt rock layers of different thicknesses are developed in the source rock strata of marine and continental basins in China. In order to investigate the influence of the variation of paste rock content on the hydrocarbon generation process and product characteristics of source rocks, taking the shale of Eagle Ford Formation in Permian Basin of the United States as source rock, hydrocarbon generation simulations were made by adding natural gypsum-salt rocks with different mass fractions to analyze the characteristics of the liquid products retained in the solid reactants. The results showed that: with the increase of the mass fraction of gypsum-salt rock, the retained hydrocarbon yield of the marine source rock presented a U-shaped curve of “decreasing then increasing”, and the content of gypsum-salt rock had a linear relationship with the relative content of saturated hydrocarbons, indicating that the gypsum-salt rock could significantly improve the quality of crude oil; the content of gypsum-salt rock was positively correlated with the parameter values of Pr/Ph, U/R and other biomarker compounds, and the influence of gypsum-salt rock content should be fully considered in the application of parameters. The results of the study are important reference for the accurate evaluation of shale oil reserve potential and the identification of the main controlling factors of shale oil quality variation.

Key words： gypsum-salt rock; residual hydrocarbon; hydrocarbon generation; shale; Eagle Ford Formation

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