The connotation and characteristics of reservoir far away from hydrocarbon source:Case study of Well Pen-1 west hydrocarbon-enriched sag,Junggar Basin

Pan Jian-guo, Huang Lin-jun, Wang Guo-dong, Guo Juan-juan, Ma Yong-ping, Luo Zhao-yang

doi:10.11764/j.issn.1672-1926.2018.11.008

2019 , Vol. 30 >Issue 3: 312 - 321

DOI: https://doi.org/10.11764/j.issn.1672-1926.2018.11.008

The connotation and characteristics of reservoir far away from hydrocarbon source:Case study of Well Pen-1 west hydrocarbon-enriched sag,Junggar Basin

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1.PetroChina Research Institute of Petroleum Exploration & Development-Northwest (NWGI),Lanzhou 730020,China; 2.School of Geoscience and Technology,Southwest Petroleum University,Chengdu 610500,China

Received date: 2018-09-25

Revised date: 2018-11-23

Online published: 2019-04-01

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Abstract

The complex superimposed basins mainly developed outside hydrocarbon reservoirs in western China with the characteristics with multi source and multi stages,which can be divided into near source and far source.There are a lot of exploration examples of far-source reservoirs outside the source at home and abroad,but the description of the connotation and characteristics is not much.Taking the Well Pen-1 west sag of Junggar Basin as an example,based on the analysis of the space-time coupling relationship of “source,carrier,trap”,we analyzed the reservoir characteristics and pool formation patterns of the far-source reservoirs in the north of Well Pen-1 west sag from the perspective of dynamic accumulation.The research suggests that connotation characteristics include a farther distance from hydrocarbon-generating center,a single or multiple oil and gas long distance accumulation in “source-carrier” system and reservoir forming period lagging behind.According to crucial point of the effective coupling between the source and transportation system during the oil & gas secondary migration or adjustment,the source- transportation system can be divided into two types:The stable source-transportation and the transitional source-transportation combined with the structural characteristics of different oil & gas accumulation stages.The transitional source-transportation can be subdivided into constructive and destructive source-transportation.The further oil/gas exploration of far-source reservoirs in Well Pen-1 west sag should be focused on the flank of the Jidong nose convex belt,the south Luliang uplift,the low convex belt between the SN31 area to the Sixi area,the low convex belt and the flank of the Y131 area.
〖WT5HZ〗Key words〖WT〗:

Key words： Connotation and characteristics; Reservoir far away from hydrocarbon source; Hydrocarbon source-transportation system; Space-time coupling; Hydrocarbon-enriched sag; Junggar Basin

Cite this article

Pan Jian-guo, Huang Lin-jun, Wang Guo-dong, Guo Juan-juan, Ma Yong-ping, Luo Zhao-yang . The connotation and characteristics of reservoir far away from hydrocarbon source:Case study of Well Pen-1 west hydrocarbon-enriched sag,Junggar Basin[J]. Natural Gas Geoscience, 2019 , 30(3) : 312 -321 . DOI: 10.11764/j.issn.1672-1926.2018.11.008

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