CN114113036A - 拉曼光谱测定海相高-过成熟度泥页岩沥青反射率的方法 - Google Patents

拉曼光谱测定海相高-过成熟度泥页岩沥青反射率的方法 Download PDF

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CN114113036A
CN114113036A CN202111376437.1A CN202111376437A CN114113036A CN 114113036 A CN114113036 A CN 114113036A CN 202111376437 A CN202111376437 A CN 202111376437A CN 114113036 A CN114113036 A CN 114113036A
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刘虎
杜军艳
程斌
戚明辉
黄毅
翁剑桥
杨威
王海波
卢家烂
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KEYUAN ENGINEERING TECHNICAL TEST CENTER OF SICHUAN PROVINCE
Guangzhou Institute of Geochemistry of CAS
Scientific Research Academy of Guangxi Environmental Protection
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Guangzhou Institute of Geochemistry of CAS
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    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/62Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
    • G01N21/63Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
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    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
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Abstract

本发明公开了一种拉曼光谱测定海相高‑过成熟度泥页岩沥青反射率的方法,选取低成熟度的烃源岩岩石和外标煤,按照制备平行样的原则加工成颗粒样品;基于不同温度点对岩石颗粒样品和煤颗粒样品进行热模拟实验;将热模拟实验得到的干酪根残渣进行拉曼光谱分析,获取拉曼光谱参数;将热模拟实验得到的煤残渣通过显微光度计获取相应的多个煤镜质体反射率RO;将拉曼光谱参数和煤镜质体反射率RO进行线性拟合,得到拟合式;将目标烃源岩岩石进行拉曼光谱分析获取拉曼光谱参数值,代入拟合式中,得到待测目标烃源岩岩石的反射率。本发明适用于下古生界高‑过成熟泥页岩,具有对测点大小要求低、重复性好和误差较小的优势。

Description

拉曼光谱测定海相高-过成熟度泥页岩沥青反射率的方法
技术领域
本发明属于油气地质测试技术领域,具体涉及一种拉曼光谱测定海相高-过成熟度泥页岩沥青反射率的方法。
背景技术
反射率是评价页岩气资源潜力大小和进行开发决策的重要指标。传统的反射率测定指标主要有镜质体、笔石反射率、Tmax、干酪根的H/C-O/C元素比值、生物标志化合物等,传统指标有其各自的适用性,互为补充,但同时也有其局限性,尤其针对我国南方处于高-过成熟度阶段下古生界烃源岩成熟度的表征,目前并没有一种公认的普适性反射率测定指标。
发明内容
本发明所要解决的技术问题便是针对上述现有技术的不足,提供一种拉曼光谱测定海相高-过成熟度泥页岩沥青反射率的方法,它适用于下古生界烃源岩的成熟度测定。
本发明所采用的技术方案是:一种拉曼光谱测定海相高-过成熟度泥页岩沥青反射率的方法,包括以下步骤:
S1:选取低成熟度的烃源岩岩石和外标煤,按照制备平行样的原则加工成岩石颗粒样品和煤颗粒样品;
S2:基于不同温度点对岩石颗粒样品和煤颗粒样品进行热模拟实验,得到不同成熟度的干酪根残渣和煤残渣;
S3:将S2得到的不同成熟度的干酪根残渣进行拉曼光谱分析,获取相应的多个拉曼光谱参数;
S4:将S2得到的不同成熟度的煤残渣通过显微光度计获取相应的多个煤残渣的镜质体反射率RO
S5:将多个拉曼光谱参数和多个煤镜质体反射率RO进行线性拟合,建立拉曼光谱参数与反射率RO的拟合式;
S6:选取待测目标烃源岩岩石进行拉曼光谱分析,得到待测烃源岩岩石的拉曼光谱参数值,将待测烃源岩岩石的拉曼光谱参数代入S5得到的拟合式中,得到待测目标烃源岩岩石的反射率。
作为优选,步骤S2中的热模拟实验采用半开放体系模拟实验。
作为优选,步骤S2中选取8-13个温度点进行热模拟实验。
作为优选,步骤S2中得到的干酪根残渣和煤残渣均需要去除它们里面包含的可溶有机质。
作为优选,步骤S3中的拉曼光谱参数包括拉曼光谱G、D峰偏移参数和拉曼光谱G/A参数。
作为优选,步骤S3中的拉曼光谱参数采用拉曼光谱G/A参数。
本发明基于热模拟实验得到不同成熟度的干酪根和煤镜质体,通过拉曼光谱分析干酪根,同时采用显微光度计获取煤镜质体反射率,得到不同成熟度的干酪根和煤镜质体反射率的线性拟合关系,从而得到高-过成熟度泥页岩的反射率来判断高-过成熟泥页岩的成熟度,适用于下古生界高-过成熟泥页岩,同时还具有对测点大小要求低、重复性好和误差较小的优势。
附图说明
图1为本发明的流程框图。
具体实施方式
下面将结合附图及具体实施例对本发明作进一步详细说明。
实施例1
如图1所示,本实施例提供的拉曼光谱测定海相高-过成熟度泥页岩沥青反射率的方法,包括以下步骤:
S1:选取低成熟度的烃源岩岩石和外标煤,按照制备平行样的原则加工成岩石颗粒样品和煤颗粒样品;本实施例采用三塘湖泥岩作为样品,样品成熟度RO为0.52%,TOC含量达到10.67%;
S2:基于不同温度点对岩石颗粒样品和煤颗粒样品进行半开放体系热模拟实验;
热模拟实验中主要考虑温度和上覆地层压力因素对生烃过程的影响,因此本实施例选择13个三塘湖泥岩平行样品分别在280℃、320℃、350℃、380℃、400℃、420℃、440℃、460℃、480℃、500℃、520℃、540℃和560℃的温度点下进行半开放式热模拟实验,压力控制在80MPa,实验过程中均是由室温升温至相应温度后恒温72h;通过在不同温度点下进行热模拟实验,可得到不同成熟度的干酪根样品;
同时采用外标煤样品在相同的温度点、相同的实验环境中进行热模拟实验,得到煤样品;
对热模拟实验后得到的干酪根样品和煤样品进行去除可溶有机质处理;首先用二氯甲烷溶剂抽提72h后去除其中的液态产物,然后进行浮选处理,浮选选用ZnBr2重液(配制成比重约为2.4g/ml水溶液),浮选后得到的干酪根样品和煤样品依次经过甲醇和二氯甲烷各抽提72h,从而得到待检所需的干酪根残渣和煤残渣;
S3:将S2得到的待检干酪根残渣用激光共聚焦扫描-拉曼光谱仪进行拉曼光谱分析,通过分析图谱获取相应的多个拉曼光谱G/A参数;
S4:将S2得到的不同成熟度的待检煤残渣通过显微光度计获取相应的多个煤残渣的镜质体反射率RO
S5:将多个拉曼光谱G/A参数和多个煤镜质体反射率RO进行线性拟合,建立拉曼光谱G/A参数与反射率RO的拟合式;
S6:选取待测目标烃源岩岩石进行拉曼光谱分析,得到待测烃源岩岩石的拉曼光谱参数值,将待测烃源岩岩石的拉曼光谱参数代入S5得到的拟合式中,得到待测目标烃源岩岩石的发射率。
实施例2
本实施例与实施例1基本相同,仅是用拉曼光谱分析后选用拉曼光谱G、D峰偏移参数,将多个拉曼光谱G、D峰偏移参数和多个煤镜质体反射率RO进行线性拟合。
通过实施例1和实施例2选用不同的拉曼光谱参数进行拟合分析后确定拉曼光谱G/A参数用于表征海相高-过成熟度泥页岩沥青反射率更为准确。
以上所述仅是本发明优选的实施方式,但本发明的保护范围并不局限于此,任何基于本发明所提供的技术方案和发明构思进行的改造和替换都应涵盖在本发明的保护范围内。

Claims (6)

1.一种拉曼光谱测定海相高-过成熟度泥页岩沥青反射率的方法,其特征在于:包括以下步骤:
S1:选取低成熟度的烃源岩岩石和外标煤,按照制备平行样的原则加工成岩石颗粒样品和煤颗粒样品;
S2:基于不同温度点对岩石颗粒样品和煤颗粒样品进行热模拟实验,得到不同成熟度的干酪根残渣和煤残渣;
S3:将S2得到的不同成熟度的干酪根残渣进行拉曼光谱分析,获取相应的多个拉曼光谱参数;
S4:将S2得到的不同成熟度的煤残渣通过显微光度计获取相应的多个煤残渣的镜质体反射率RO
S5:将多个拉曼光谱参数和多个煤镜质体反射率RO进行线性拟合,建立拉曼光谱参数与反射率RO的拟合式;
S6:选取待测目标烃源岩岩石进行拉曼光谱分析,得到待测烃源岩岩石的拉曼光谱参数值,将待测烃源岩岩石的拉曼光谱参数代入S5得到的拟合式中,得到待测目标烃源岩岩石的反射率。
2.根据权利要求1所述的拉曼光谱测定海相高-过成熟度泥页岩沥青反射率的方法,其特征在于:步骤S2中的热模拟实验采用半开放体系模拟实验。
3.根据权利要求1或2所述的拉曼光谱测定海相高-过成熟度泥页岩沥青反射率的方法,其特征在于:步骤S2中选取8-13个温度点进行热模拟实验。
4.根据权利要求3所述的拉曼光谱测定海相高-过成熟度泥页岩沥青反射率的方法,其特征在于:步骤S2中得到的干酪根残渣和煤残渣均需要去除它们里面包含的可溶有机质。
5.根据权利要求1、2或4所述的拉曼光谱测定海相高-过成熟度泥页岩沥青反射率的方法,其特征在于:步骤S3中的拉曼光谱参数包括拉曼光谱G、D峰偏移参数和拉曼光谱G/A参数。
6.根据权利要求5所述的拉曼光谱测定海相高-过成熟度泥页岩沥青反射率的方法,其特征在于:步骤S3中的拉曼光谱参数采用拉曼光谱G/A参数。
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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105044077A (zh) * 2015-06-24 2015-11-11 中国石油大学(华东) 一种有机质热成熟度定量表征函数的获取方法以及该函数的应用
CN110132902A (zh) * 2019-05-15 2019-08-16 重庆地质矿产研究院 一种下古生界海相页岩有机质成熟度的评价方法
US20200003694A1 (en) * 2017-02-27 2020-01-02 Schlumberger Technology Corporation Wellsite kerogen maturity determination utilizing raman spectroscopy
CN114544582A (zh) * 2021-05-20 2022-05-27 南京大学 一种强各向异性储层焦沥青成熟度表征方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105044077A (zh) * 2015-06-24 2015-11-11 中国石油大学(华东) 一种有机质热成熟度定量表征函数的获取方法以及该函数的应用
US20200003694A1 (en) * 2017-02-27 2020-01-02 Schlumberger Technology Corporation Wellsite kerogen maturity determination utilizing raman spectroscopy
CN110132902A (zh) * 2019-05-15 2019-08-16 重庆地质矿产研究院 一种下古生界海相页岩有机质成熟度的评价方法
CN114544582A (zh) * 2021-05-20 2022-05-27 南京大学 一种强各向异性储层焦沥青成熟度表征方法

Non-Patent Citations (5)

* Cited by examiner, † Cited by third party
Title
SCHOPF J W, ET AL.: "Raman imagery: A new approach to assess the geochemical maturity and biogenicity of permineralized Precambrian fossils", <ASTROBIOLOGY> *
刘德汉 等: "固体有机质拉曼光谱参数计算样品热演化程度的方法与地质应用", 《科学通报》 *
单云 等: "Ⅰ型干酪根热成熟过程中拉曼光谱特征及其成熟度意义", 《地球化学》 *
杜军艳 等: "海相高过成熟烃源岩演化程度评价方法探讨", 《矿物岩石地球化学通报》 *
王晔 等: "固体沥青反射率与镜质体反射率的等效关系评价", 《中国矿业大学学报》 *

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