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 PDFInfo
- Publication number
- 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
- Authority
- CN
- China
- Prior art keywords
- raman spectrum
- coal
- reflectivity
- maturity
- rock
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 238000002310 reflectometry Methods 0.000 title claims abstract description 35
- 238000000034 method Methods 0.000 title claims abstract description 17
- 239000010426 asphalt Substances 0.000 title claims abstract description 14
- 238000001069 Raman spectroscopy Methods 0.000 title claims abstract description 12
- 238000001237 Raman spectrum Methods 0.000 claims abstract description 42
- 239000003245 coal Substances 0.000 claims abstract description 40
- 239000011435 rock Substances 0.000 claims abstract description 31
- 238000004088 simulation Methods 0.000 claims abstract description 18
- 239000004215 Carbon black (E152) Substances 0.000 claims abstract description 16
- 229930195733 hydrocarbon Natural products 0.000 claims abstract description 16
- 150000002430 hydrocarbons Chemical class 0.000 claims abstract description 16
- 239000002245 particle Substances 0.000 claims abstract description 15
- 239000004079 vitrinite Substances 0.000 claims abstract description 13
- 238000004458 analytical method Methods 0.000 claims abstract description 11
- 238000012545 processing Methods 0.000 claims abstract description 4
- 239000005416 organic matter Substances 0.000 claims description 3
- 230000003595 spectral effect Effects 0.000 abstract 1
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 9
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 238000005188 flotation Methods 0.000 description 3
- VNDYJBBGRKZCSX-UHFFFAOYSA-L zinc bromide Chemical compound Br[Zn]Br VNDYJBBGRKZCSX-UHFFFAOYSA-L 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000000035 biogenic effect Effects 0.000 description 1
- 239000000090 biomarker Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000012263 liquid product Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
- G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
- G01N21/65—Raman scattering
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/55—Specular reflectivity
Landscapes
- Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
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
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。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202111376437.1A CN114113036A (zh) | 2021-11-19 | 2021-11-19 | 拉曼光谱测定海相高-过成熟度泥页岩沥青反射率的方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202111376437.1A CN114113036A (zh) | 2021-11-19 | 2021-11-19 | 拉曼光谱测定海相高-过成熟度泥页岩沥青反射率的方法 |
Publications (1)
Publication Number | Publication Date |
---|---|
CN114113036A true CN114113036A (zh) | 2022-03-01 |
Family
ID=80398186
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202111376437.1A Withdrawn CN114113036A (zh) | 2021-11-19 | 2021-11-19 | 拉曼光谱测定海相高-过成熟度泥页岩沥青反射率的方法 |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN114113036A (zh) |
Citations (4)
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 |
-
2021
- 2021-11-19 CN CN202111376437.1A patent/CN114113036A/zh not_active Withdrawn
Patent Citations (4)
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)
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》 * |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
Cheshire et al. | Assessing thermal maturity beyond the reaches of vitrinite reflectance and Rock-Eval pyrolysis: A case study from the Silurian Qusaiba formation | |
Craddock et al. | Evolution of kerogen and bitumen during thermal maturation via semi-open pyrolysis investigated by infrared spectroscopy | |
Khatibi et al. | NMR relaxometry a new approach to detect geochemical properties of organic matter in tight shales | |
Curiale et al. | Organic geochemical applications to the exploration for source-rock reservoirs–A review | |
EP2890979B1 (en) | Method for reconstructing the total organic carbon content from compositional modeling analysis | |
Hou et al. | Hydrocarbon generation-retention-expulsion mechanism and shale oil producibility of the permian lucaogou shale in the Junggar Basin as simulated by semi-open pyrolysis experiments | |
CN107957411B (zh) | 一种用全息荧光检测油源岩成熟度的方法及其装置 | |
CN108027332B (zh) | 烃产生动力学中的nmr | |
Schito et al. | Comparing optical and Raman spectroscopic investigations of phytoclasts and sporomorphs for thermal maturity assessment: the case study of Hettangian continental facies in the Holy cross Mts.(central Poland) | |
Birdwell et al. | Compositional evolution of organic matter in Boquillas Shale across a thermal gradient at the single particle level | |
CN110108856A (zh) | 超压背景下烃源岩有机质成熟度的预测方法 | |
Sauerer et al. | Assessing extreme maturities–Challenging examples from immature Jordanian to overmature Far Eastern unconventional formations | |
Zhang et al. | Differential evolution and the influencing factors of low-maturity terrestrial shale with different types of kerogen: A case study of a Jurassic shale from the northern margin of Qaidam Basin, China | |
Blanchet et al. | Microspectrofluorimetric and microthermometric evidence for variability in hydrocarbon fluid inclusions in quartz overgrowths: implications for inclusion trapping in the Alwyn North field, North Sea | |
Craddock et al. | Robust determination of kerogen properties in organic-rich mudrocks via Raman Spectroscopy | |
Carvajal-Ortiz* et al. | High-frequency (20 MHz) NMR and modified rock-eval pyrolysis methods as an integrated approach to examine producibility in kerogen-rich source-reservoirs | |
Karg et al. | Thermal maturity assessment of marine source rocks integrating Raman spectroscopy, organic geochemistry and petroleum systems modeling | |
CN114113036A (zh) | 拉曼光谱测定海相高-过成熟度泥页岩沥青反射率的方法 | |
Stephenson et al. | Investigating the record of Permian climate change from argillaceous sedimentary rocks, Oman | |
CN109540864B (zh) | 一种基于PL-Raman光谱分析的煤质快速检测方法 | |
Maglevannaia et al. | Analysis of geochemical trends for the Bazhenov oil shale formation based on pyrolysis data | |
Balaram et al. | Developments in analytical techniques for chemostratigraphy, chronostratigraphy, and geochemical fingerprinting studies: Current status and future trends | |
CN113092641B (zh) | 一种有机质沉积环境判识图版的制作及其应用方法 | |
CN116124755A (zh) | 一种基于拉曼光谱的海相泥页岩成熟度测试方法 | |
CN114460122A (zh) | 一种用于烃源岩热模拟实验的岩屑样品选样方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
WW01 | Invention patent application withdrawn after publication |
Application publication date: 20220301 |
|
WW01 | Invention patent application withdrawn after publication |