# US 2023/0053348 A1 · Method and apparatus for evaluating volumes of discharged hydrocarbon and externally charged hydrocarbon in mud shale

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- Number: US 2023/0053348 A1
- Document ID: US20230053348A1
- Status: Published application
- Kind: A1
- Application number: 17/894,087
- Filed: 2022-08-23
- Published: 2023-02-23
- Earliest claimed: 2021-08-23
- Assignees: China University of Petroleum-Beijing
- Applicants: China University of Petroleum-Beijing
- Inventors: Tao HU; Xiongqi PANG; Fujie JIANG; Yuan LIU; Guanyun WU; Jiahao LYU; Zhenxue JIANG; Yao HU; Caijun LI; Chenxi ZHANG; Meiling HU; Renda HUANG
- Web page: https://patentgrep.com/patent/US20230053348A1

## CPC

- G01N 33/241: {for hydrocarbon content}
- G01N: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES (measuring or testing apparatus or processes other than immunoassay, involving enzymes or microorganisms C12M, C12Q)

## Abstract

A method and apparatus for evaluating volumes of discharged hydrocarbon and externally charged hydrocarbon in a mud shale. The method comprises: determining a hydrogen index and a current hydrocarbon generation potential parameter of a mud shale in target block based on total organic carbon test data and pyrolysis analysis test data of the mud shale; determining an original hydrogen index of the mud shale based on the hydrogen index and the pyrolysis analysis test data; and evaluating a volume of discharged hydrocarbon and a volume of externally charged hydrocarbon in the mud shale based on the current hydrocarbon generation potential parameter and the original hydrogen index.

## Claims

### Claim 1

A method for evaluating volumes of discharged hydrocarbon and externally charged hydrocarbon in a mud shale, comprising:
determining a hydrogen index and a current hydrocarbon generation potential parameter of a mud shale in a target block based on total organic carbon test data and pyrolysis analysis test data of the mud shale;
determining an original hydrogen index of the mud shale based on the hydrogen index and the pyrolysis analysis test data; and
evaluating a volume of discharged hydrocarbon and a volume of externally charged hydrocarbon in the mud shale based on the current hydrocarbon generation potential parameter and the original hydrogen index.

### Claim 2 (depends on 1)

The method according to claim 1, wherein determining the hydrogen index and the current hydrocarbon generation potential parameter of the mud shale based on the total organic carbon test data and the pyrolysis analysis test data of the mud shale comprises:
performing a light hydrocarbon correction on the pyrolysis analysis test data; and
determining the current hydrocarbon generation potential parameter based on the total organic carbon test data and the pyrolysis analysis test data on which the light hydrocarbon correction has been performed.

### Claim 3 (depends on 1)

The method according to claim 1, wherein determining the original hydrogen index of the mud shale based on the hydrogen index and the pyrolysis analysis test data comprises:
classifying organic matter types of the mud shale based on the hydrogen index and the pyrolysis analysis test data; and
determining the original hydrogen index based on the organic matter types and the hydrogen index.

### Claim 4 (depends on 3)

The method according to claim 3, wherein determining the original hydrogen index based on the organic matter types and the hydrogen index comprises:
establishing evolution models of various types of kerogen of the mud shale based on the organic matter types; and
determining the original hydrogen index of the mud shale based on the evolution models and the hydrogen index.

### Claim 5 (depends on 4)

The method according to claim 4, wherein the evolution models represent variation relationships between the hydrogen indexes of various types of kerogen and the pyrolysis analysis test data.

### Claim 6 (depends on 4)

The method according to claim 4, wherein determining the original hydrogen index of the mud shale based on the evolution models and the hydrogen index comprises:
calculating hydrocarbon generation conversion rates corresponding to various types of kerogen at different thermal evolution maturities based on the evolution models; and
determining the original hydrogen index based on the hydrocarbon generation conversion rates and the hydrogen index.

### Claim 7 (depends on 1)

The method according to claim 1, further comprising:
obtaining the mud shale from the target block;
performing a total organic carbon test and a pyrolysis analysis test on the mud shale to obtain the total organic carbon test data and the pyrolysis analysis test data.

### Claim 8 (depends on 1)

The method according to claim 1, further comprising:
determining whether to perform oil production on the target block based on the volume of discharged hydrocarbon and the volume of externally charged hydrocarbon in the mud shale.

### Claim 9

An apparatus for evaluating volumes of discharged hydrocarbon and externally charged hydrocarbon in a mud shale, comprising:
a hydrogen index determination module configured to determine a hydrogen index and a current hydrocarbon generation potential parameter of a mud shale in a target block based on total organic carbon test data and pyrolysis analysis test data of the mud shale;
an original hydrogen index determination module configured to determine an original hydrogen index of the mud shale based on the hydrogen index and the pyrolysis analysis test data; and
a mud shale evaluation module configured to evaluate a volume of discharged hydrocarbon and a volume of externally charged hydrocarbon in the mud shale based on the current hydrocarbon generation potential parameter and the original hydrogen index.

### Claim 10 (depends on 9)

The apparatus according to claim 9, wherein the hydrogen index determination module comprises:
a pyrolysis data correction unit configured to perform a light hydrocarbon correction on the pyrolysis analysis test data; and
a current potential parameter determination unit configured to determine the current hydrocarbon generation potential parameter based on the total organic carbon test data and the pyrolysis analysis test data on which the light hydrocarbon correction has been performed.

### Claim 11 (depends on 9)

The apparatus according to claim 9, wherein the original hydrogen index determination module comprises:
an organic matter type classifying unit configured to classify organic matter types of the mud shale based on the hydrogen index and the pyrolysis analysis test data; and
an original hydrogen index determination unit configured to determine the original hydrogen index based on the organic matter types and the hydrogen index.

### Claim 12 (depends on 11)

The apparatus according to claim 11, wherein the original hydrogen index determination unit comprises:
an evolution model establishing unit configured to establish evolution models of various types of kerogen of the mud shale based on the organic matter types; and
an original hydrogen index determination first subunit configured to determine the original hydrogen index of the mud shale based on the evolution models and the hydrogen index.

### Claim 13 (depends on 12)

The apparatus according to claim 12, wherein the evolution models represent variation relationships between the hydrogen indexes of various types of kerogen and the pyrolysis analysis test data.

### Claim 14 (depends on 12)

The apparatus according to claim 12, wherein the original hydrogen index determination first subunit comprises:
a hydrocarbon generation conversion rate calculation unit configured to calculate hydrocarbon generation conversion rates corresponding to various types of kerogen at different thermal evolution maturities based on the evolution models; and
an original hydrogen index determination second subunit configured to determine the original hydrogen index based on the hydrocarbon generation conversion rates and the hydrogen index.

### Claim 15 (depends on 1)

An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor is configured to execute the computer program to implement the steps of the method of claim 1.