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Marine site zone petroleum entrapment master control factor identification and favorable exploration target sorting method

A technology for oil and gas accumulation and main control factors, applied in data processing applications, instruments, calculations, etc., can solve problems such as poor quantification, lack of formation, and poor intuition, so as to improve understanding, decision-making, and exploration. The effect of research awareness

Inactive Publication Date: 2018-02-09
CHINA NAT OFFSHORE OIL CORP +1
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Problems solved by technology

[0004] The identification of the main controlling factors of oil and gas accumulation and the ranking of favorable exploration targets by domestic oil companies are mostly based on traditional petroleum geology theories and methods, and the qualitative analysis proposes the main controlling factors of oil and gas accumulation in the zone and the tabulation of six elements of accumulation The ranking of exploration targets is given by means of scoring, summation, etc., and the evaluation method system of the six elements of accumulation with differential importance for oil and gas accumulation has not been formed. The interpretation method is relatively single, not intuitive, and poor in quantification, which needs to be studied through practice , form the evaluation method of six elements of accumulation with differential weights based on the understanding of accumulation law, especially the evaluation method of petroleum geological modeling based on the elements of oil and gas accumulation, improve the main characteristics of oil and gas accumulation in oil and gas basins in low exploration degree sea areas. Identification of controlling factors and reliability of ranking results of favorable exploration targets

Method used

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  • Marine site zone petroleum entrapment master control factor identification and favorable exploration target sorting method
  • Marine site zone petroleum entrapment master control factor identification and favorable exploration target sorting method
  • Marine site zone petroleum entrapment master control factor identification and favorable exploration target sorting method

Examples

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example 1

[0018] Example 1: The main controlling factors of accumulation and the selection of favorable exploration targets in the deep high temperature and overpressure area of ​​X area in Yinggehai Basin, South China Sea

[0019] The deep part of Area X in the Yinggehai Basin in the South China Sea is a key exploration area in the field of high temperature and overpressure. According to the workflow and method of the present invention, the identification of the main controlling factors of accumulation in the zone and the selection of favorable exploration targets have been carried out successively, and the "reservoir-caprock According to the understanding of the law of four-element coupling of layer-trap and migration, X13-2, X29-2, and X13-1 are the top three favorable targets in the play, among which X13-2 and X13-1 have been explored A major discovery, X29-2 is listed as the next step of exploration deployment. The specific identification of the main controlling factors of accumula...

example 2

[0046] Example 2: The main controlling factors of oil and gas accumulation and the selection of favorable exploration targets in the deep water area of ​​Qiongdongnan Basin, South China Sea

[0047]The deep-water area of ​​the Qiongdongnan Basin is a key natural gas exploration area in the northern South China Sea. According to the work flow and method of the present invention, the identification of the main controlling factors of accumulation in the deep-water area and the selection of favorable exploration targets have been carried out successively, and the "source rock-reservoir-trap X17-2, X25-1, X18-1, X18-2, X1-1, and X25-2 are the top five favorable targets in deepwater areas, among which X17-2 , X25-1, X18-1, and X18-2 have made major exploration discoveries, and X25-2, X1-1, etc. are listed as the next step of deep-water area exploration deployment. The specific identification of the main controlling factors of accumulation and the ranking of favorable exploration tar...

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Abstract

The invention relates to a marine site zone petroleum entrapment master control factor identification and favorable exploration target sorting method. The marine site zone petroleum entrapment mastercontrol factor identification and favorable exploration target sorting method is characterized in that as the marine site oil gas exploration degree and the geological cognition degree are low, through pairwise comparison of petroleum entrapment factors (source rock, reservoir, cover, entrapment, migration and storage) of one zone in a offshore petroliferous basin, assignment is performed according to the degree of importance of petroleum entrapment; a 6*6 identification matrix A of the zone petroleum entrapment master control factors is established, and the magnitude of the characteristic vector value of the 6*6 identification matrix A reflects the degree of importance of the six factors: source rock, reservoir, cover, entrapment, migration and storage in the zone for control of petroleumentrapment; through combination with comprehensive geological research, probability assignment exists in the source rock, reservoir, cover, entrapment, migration and storage of the exploration targetin the zone, the degree of importance of the six factors: source rock, reservoir, cover, entrapment, migration and storage in the zone can be weighed, and favorable exploration target comprehensive sorting on the zone is performed, and field exploration disposition and decision for a petroleum company can be provided.

Description

[0001] method field [0002] The invention relates to a method for identification of main controlling factors of oil and gas accumulation in sea areas and a method for ranking favorable exploration targets, which is used for identification of main controlling factors of oil and gas accumulation in areas with oil and gas bearing basins in sea areas and ranking of favorable exploration targets. Background technique [0003] The identification of the main controlling factors of oil and gas accumulation and the ranking of favorable exploration targets in offshore oil and gas basins are in the qualitative geological-geophysical description stage, and there is a lack of quantitative evaluation ideas suitable for the identification of main controlling factors of oil and gas accumulation and the ranking of favorable exploration targets Furthermore, there is a lack of practical methods for identification of main controlling factors of oil and gas accumulation and ranking and evaluation ...

Claims

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Application Information

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IPC IPC(8): G06Q10/06G06Q50/02
CPCG06Q10/0637G06Q10/0639G06Q50/02
Inventor 张迎朝甘军朱继田刘仕友尤丽刘平杨希冰范彩伟
Owner CHINA NAT OFFSHORE OIL CORP
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