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Method for quantifying pyritic sulfur and organic sulfur of rock sample

一种黄铁矿、沉积岩的技术，应用在石油工业,地质构造勘探开发领域，能够解决昂贵等问题

Active Publication Date: 2019-03-19
INST FR DU PETROLE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0037] - It requires the use of a synchrotron, which is a very heavy and expensive piece of equipment

Method used

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  • Method for quantifying pyritic sulfur and organic sulfur of rock sample
  • Method for quantifying pyritic sulfur and organic sulfur of rock sample
  • Method for quantifying pyritic sulfur and organic sulfur of rock sample

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Experimental program
Comparison scheme
Effect test

Embodiment approach

[0187] According to one embodiment of the present invention, the following mixture can be prepared:

[0188] - Type A mixture: 2 mg of pyrite + 2 mg of organic matter;

[0189] - Type B mixture: 2 mg pyrite + 4 mg organic matter.

[0190] These mixtures are representative of the typical composition of kerogens in sedimentary formations.

[0191] Hereinafter referred to as "organic matrix effect" is the quantity expressed by:

[0192]

[0193] in, is the pyrolytic pyritic sulfur obtained after analysis of a mixture consisting of pyrite and organic matter (as described in step 3), and is the expected pyrolytic pyrite sulfur value for the mixture. This theoretical reference value is calculated as follows:

[0194] -Using ROCK- The device (French Petroleum and New Energy Research Institute) separately analyzes each organic matter sample to quantify its pyrolysis pyrite sulfur content (as described in step 3);

[0195] -Using ROCK- The device (French Petroleum and Ne...

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Abstract

A method is provided for characterizing and quantifying the pyritic sulfur and the organic sulfur separately in a sedimentary rock sample. A rock sample is subjected to a heating process in an inert atmosphere, the effluents resulting from the heating in the inert atmosphere are continuously oxidized, the released SO2 is continuously measured, and a pyrolysis sulfur content and a pyrolysis pyriticsulfur content are deduced. The residue heated in the inert atmosphere is heated in an oxidizing atmosphere, the released SO2 is continuously measured, and at least oxidation sulfur content is deduced therefrom. The pyritic sulfur content is determined from the pyritic pyrolysis sulfur content and a weighting function taking account of a first parameter representing a thermal degradation rate ofthe pyrite, a second parameter representing the impact of the mineral matrix, and a third parameter representing the impact of the organic matrix. In addition, the organic sulfur content can be determined from at least the oxidation sulfur content, the pyrolysis sulfur content and the pyritic sulfur content. Application: in particular to oil exploration and exploitation.

Description

technical field [0001] The present invention relates to the technical field of petroleum industry, and more specifically relates to the field of geological structure exploration and development for capturing hydrocarbons. [0002] More specifically, the present invention relates to the characterization and quantification of sulfur present in sedimentary rocks, such as marine clays rich in organic matter. [0003] To meet growing energy demands, the petroleum industry is increasingly focusing on the production of unconventional crude oils, which have a higher sulfur content than conventional oils. As such, the sulfur content of unconventional crude oil and the type of organosulfur compounds it contains are key parameters for the quality of this oil and the refined products obtained therefrom. In addition, the sulfur content of refined products required by regulations is getting lower and lower. Therefore, it is important to be able to accurately characterize and quantify the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/24
CPCG01N31/005G01N31/12G01N33/24G01N25/00Y10T436/186Y10T436/188
Inventor A·阿布索V·拉穆赫-瓦赫D·皮约I·科瓦列斯基B·多利戈斯B·加西亚T·瓦格纳J·O·布克曼C·玛兹
Owner INST FR DU PETROLE
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