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Method for estimating light hydrocarbon product amountin hydrocarbon generation and expulsion thermal simulation experiment

A technology for simulating experiments and generating and expelling hydrocarbon heat. It is applied in measurement devices, instruments, scientific instruments, etc. It can solve the problems of uncertainty in the amount of heavy hydrocarbons and high amount of light hydrocarbons, and achieve the effect of simplifying and improving the accuracy of subsequent processing devices.

Active Publication Date: 2016-09-28
PETROCHINA CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

From this, it can be inferred that the amount of light hydrocarbons calculated by this scheme is on the high side, and the amount of heavy hydrocarbons is uncertain

Method used

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  • Method for estimating light hydrocarbon product amountin hydrocarbon generation and expulsion thermal simulation experiment
  • Method for estimating light hydrocarbon product amountin hydrocarbon generation and expulsion thermal simulation experiment
  • Method for estimating light hydrocarbon product amountin hydrocarbon generation and expulsion thermal simulation experiment

Examples

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Embodiment 1

[0054] This embodiment provides a method for estimating the amount of light hydrocarbon products in a thermal simulation experiment of hydrocarbon generation and expulsion. The experimental sample is the black mudstone (with an organic carbon content of 4.89%) in the Cretaceous formation of Well Chao 73-87 in the Songliao Basin. Include the following steps:

[0055] (1) The rock sample was pyrolyzed using the Rock-Eval VI pyrolysis instrument produced by the French Petroleum Research Institute, and the free hydrocarbon S1 was 0.86 mg / g, and the pyrolyzed hydrocarbon S2 was 41.41 mg / g.

[0056] (2) Referring to the predecessor's (Lewan M D, 1993) experimental model of adding water and sealing hot-pressed hydrocarbon generation, set up a series of semi-open hydrocarbon generation and expulsion thermal simulation experiments heated at different temperatures for a certain period of time. There is a relatively uniform spacing; during the experiment, the constant fluid pressure is 3...

Embodiment 2

[0068] This example provides a method for estimating the amount of light hydrocarbon products in the thermal simulation experiment of hydrocarbon generation and expulsion. In this method, the experimental sample is the black shale of the Proterozoic Xiamaling Formation in the Liang area of ​​Xiahuayuan Gucheng, North China (TOC=4.68%) ), the method includes the following steps:

[0069] (1) Using the Rock-Eval VI pyrolysis instrument produced by the French Petroleum Research Institute to perform pyrolysis analysis on rock samples, the free hydrocarbon S1 was 0.2 mg / g, and the pyrolyzed hydrocarbon S2 was 16.49 mg / g.

[0070] (2) In the thermal simulation experiment of hydrocarbon generation and expulsion, simulate the hydrocarbon generation and expulsion of the sample at different temperature stages from 320°C to 550°C after 3 days at a buried depth of 3000m under pressure and constant temperature; collect the fluid product A during the process of heating and expulsion ; Record ...

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Abstract

The invention provides a method for estimating light hydrocarbon product amountin a hydrocarbon generation and expulsion thermal simulation experiment. In the method, on the basis of various hydrocarbon generation and expulsion thermal simulation experiments,through the steps of discharging a part of remaining hydrocarbon and collecting and measuring discharged products, initial rock sample pyrolysis analysis data S1 and S2 are combined withrock residual sample pyrolysis analysis data S1' and S2' obtained after experiments to establish a calculation formula for light hydrocarbon yield Pt, so that the light hydrocarbon product amount in the hydrocarbon generation and expulsion thermal simulation experiment can be conveniently and accurately obtained. According to the method for estimating the light hydrocarbon product amount in the hydrocarbon generation and expulsion thermal simulation experiment, the problem of difficulty in accurate estimation of light hydrocarbon amount even when low-temperature cooling and a high-end apparatus are matched in various hydrocarbon generation and expulsion experiments is solved, a hydrocarbon generation and expulsion device and a subsequent treatment device are simplified and even eliminated, and the problems of a pyrolysis rock S1 light and heavy hydrocarbon correction method (CN103543470A) are also solved.

Description

technical field [0001] The invention belongs to the technical field of oil and gas geochemistry, and in particular relates to a method for estimating the amount of light hydrocarbon products in thermal simulation experiments of hydrocarbon generation and expulsion. Background technique [0002] The hydrocarbon generation ability and product composition of source rocks determine the amount of resources and the type of oil and gas reservoirs, which affect the development plan. The thermal simulation experiment of hydrocarbon generation and expulsion is an important means to study the mechanism of hydrocarbon expulsion and evaluate the potential of hydrocarbon generation and expulsion of source rocks. It also provides parameters for conventional and unconventional oil and gas resource evaluation and basin simulation software. Light hydrocarbons (C 4 -C 14 ), due to its volatile nature at normal temperature and pressure, accurate measurement has always been a difficult problem...

Claims

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Application Information

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IPC IPC(8): G01N30/02
CPCG01N30/02G01N2030/025
Inventor 陈瑞银张水昌王汇彤张斌李化冬袁育红
Owner PETROCHINA CO LTD
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