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An Oil Source Identification Method for Continental Complex Crude Oil

An identification method and oil source technology are applied in the field of oil source identification of complex continental crude oil, which can solve the problems of inaccurate oil source identification results, and achieve the effect of high accuracy of identification results and solving inaccurate results.

Active Publication Date: 2020-09-29
NANJING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, later experiments found that this method has good applicability for complex crude oils in marine facies, but for complex crude oils in continental facies, the oil source identification results are still inaccurate

Method used

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  • An Oil Source Identification Method for Continental Complex Crude Oil
  • An Oil Source Identification Method for Continental Complex Crude Oil
  • An Oil Source Identification Method for Continental Complex Crude Oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] S1 Sample collection and pretreatment: 33 continental crude oil samples from the Dongpu Sag were selected as samples for this experiment, and solid impurities in the continental crude oil samples were removed by filtration, and anhydrous sulfuric acid was added to the continental crude oil samples Sodium, shaken and allowed to stand, then filtered to remove water from continental crude oil samples after standing for 24 hours.

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Abstract

The invention provides an oil source identification method for continental facies complex crude oil, which belongs to the technical field of petroleum geology. The method can quickly and efficiently identify the oil source of continental facies complex crude oil, and the identification result is accurate and reliable. The method comprises the steps that a crude oil sample in a research area is collected, and solid impurities and water in the crude oil sample are removed; nuclear magnetic resonance detection is carried out on the pretreated crude oil sample to acquire a carbon spectrum and a hydrogen spectrum; according to the acquired carbon spectrum and hydrogen spectrum, functional groups characterizing oil source characteristics are identified, and chemical structural parameters for characterizing oil source characteristics are determined; and according to the acquired carbon spectrum and hydrogen spectrum, the values of the chemical structural parameters are calculated, and an oilsource identification plate is established for oil source identification.

Description

technical field [0001] The invention belongs to the technical field of petroleum geology, and in particular relates to an oil source identification method for continental complex crude oil. Background technique [0002] Oil and gas source analysis is a basic content of petroleum geology and geochemistry research. It refers to the comparative analysis of the genetic relationship between crude oil and natural gas and organic parent source input components between possible source rocks, so as to identify and trace the possible sources of oil and natural gas. [0003] Complex crude oil includes mixed crude oil and degraded crude oil. Many basins in China, such as the Junggar Basin in the west, the Tarim Basin in the west, and the Bohai Bay Basin in the east, have the characteristics of multi-source and degradation reformation in the hydrocarbon accumulation process. Taking the Junggar Basin in the west as an example, its mixed and degraded oil reservoirs account for a considerab...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N24/08
CPCG01N24/087
Inventor 曹剑高国辉徐田武张洪安
Owner NANJING UNIV
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