Patent · US Active

Evaluation method for residual hydrocarbon of post- to over-mature marine source rocks

US11499957B1 · kind B1 · utility

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2Claims

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Assignee

Institute of Geology and Geophysics, Chinese Academy of Sciences · CN

Inventors

Wenyang Wang · Changchun, CN
Yaping Wang · Cambridge, US
Xiongqi Pang · Beijing, CN
Zhangxing Chen · Beijing, CN
Wang Zhang · Nanjing, CN
Rixiang Zhu · Beijing, CN

Key dates

Filing date	Nov 22, 2021
Grant date	Nov 15, 2022
Priority date	—
Expiry date	Nov 22, 2041

Classification

Technology area (CPC G)Physics
CPC primaryG01K13/00
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

An evaluation method for residual hydrocarbon of post- to over-mature marine source rocks includes the following steps: establishing a hydrocarbon generation potential evolution profile and a hydrogen index evolution profile of post- to over-mature source rocks; determining a critical condition for hydrocarbon expulsion of the source rocks, and inverting original hydrocarbon generation potential of the source rocks; inverting a critical condition for hydrocarbon generation of the source rocks; establishing a hydrocarbon generation, expulsion and retention model for the source rocks; determining a hydrocarbon generation rate, a hydrocarbon expulsion rate and a hydrocarbon retention rate of the source rocks; and calculating a hydrocarbon retention intensity and residual hydrocarbon of the source rocks. The evaluation method establishes an evaluation model for residual hydrocarbon of post- to over-mature source rocks without relying on immature to sub-mature samples.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.