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A method for oil source correlation using iron isotope

A technology of isotope and oil source, applied in the field of oil and gas exploration

Active Publication Date: 2022-03-29
PETROCHINA CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in some complex areas, such as the Tarim Basin, whether the oil and gas come from the Cambrian or the Ordovician has always been controversial

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  • A method for oil source correlation using iron isotope
  • A method for oil source correlation using iron isotope
  • A method for oil source correlation using iron isotope

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Embodiment Construction

[0079] The present invention will be described more clearly, and the preferred embodiments are further illustrated in connection with the preferred embodiments. Those skilled in the art will appreciate that the following description is illustrative and not limiting, and the scope of the invention should not be limited.

[0080] The embodiment of the present invention is specifically described as an example in the Bohai Bay Basin reservoir, and the specific method includes the following steps:

[0081] S111, from the oil-proof wellhead of the production of well, about 20g of fresh crude oil samples; weigh fresh crude oil 6 ~ 8G in the stone beaker, add oil ether 15ml, shake the crude oil and petroleum ether is essentially miscible, add no water 15 ml of ethanol and was mixed after shaking at 80 ° C for 12 hours.

[0082] S112, again weigh fresh crude oil 6 to 8G in the quartz beaker, repeat S110 flow.

[0083] After S113, the preliminary sample prepared twice was allowed to stand f...

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Abstract

The invention discloses a method for carrying out oil source correlation by using iron isotope. The method comprises the following steps: S100, separation and enrichment of iron elements in crude oil; S200, separation and enrichment of iron elements in source rocks; S300, test and analysis of iron element content; S400, detection and analysis of iron stable isotope composition; S500, passing Based on the analysis of known iron isotopes in different depositional environments, different maturity source rocks, and crude oils and source rocks with different properties, the δ 56 Fe(‰)-reservoir type identification index chart; S600, according to the established identification index chart, determine the source and origin of the unknown oil source. The invention uses iron isotopes to identify the source and origin of oil and gas, and quickly determines the origin of oil and gas to provide technical and theoretical guidance for determining oil and gas exploration targets.

Description

Technical field [0001] The present invention belongs to the field of oil and gas exploration, and in particular to a method of launching an oil source in an iron with an iron. Background technique [0002] Organic Geochemistry Studies mainly focus on the composition, structure, origin and evolution of organic matter in geology, in the field of oil and gas exploration, especially the contrast of oil and gas genesis and oil source, related to exploration target evaluation and well-in well-selected, oil and gas reservoir scale And distribution law, etc., therefore, it is highly valued. Conventional methods are indexes such as biomarkers, carbon heterogeneous, and have been determined to determine oil and gas genesis and sources in most areas or oil and gas fields. However, some complex areas, such as the Tarim Basin, and the oil and gas are from the cold weapons or the o'clock, there has been controversial. Therefore, it is necessary to develop a new indicator system to determine th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N27/626G01N1/28G01N1/34
CPCG01N27/62G01N1/286G01N1/34G01N1/28G01N2001/2866
Inventor 朱光有李婧菲李婷婷张志遥陈玮岩
Owner PETROCHINA CO LTD