Special Oil & Gas Reservoirs >

2023 , Vol. 30 >Issue 4: 28 - 34

DOI: https://doi.org/10.3969/j.issn.1006-6535.2023.04.004

Geologic Exploration

Main Controlling Factors and Reservoir Formation Mode of Oil and Gas in the Putaohua Reservoir in Sanzhao Sag, Songliao Basin

  • Qin Yingfeng
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  • PetroChina Daqing Exploratory Drilling Engineering Company, Daqing, Heilongjiang 163411, China

Received date: 2022-12-20

  Revised date: 2023-05-14

  Online published: 2023-09-18

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Abstract

To address the problem that the main controlling factors of hydrocarbon enrichment in the Putaohua reservoir in the Sanzhao Sag of the Songliao Basin are unclear, the main controlling factors of hydrocarbon accumulation are comprehensively analyzed by using test data and seismic data, and a hydrocarbon enrichment model is established to provide a theoretical basis for hydrocarbon exploration. The results of the study show that the sedimentary microfacies controls the distribution of favorable reservoirs; the oil source faults and sand bodies form the dominant transportation channels; two major types of tectonic-lithologic traps and lithologic traps have been developed in the Sanzhao Sag, which are subdivided into four subcategories: nose-like tectonic-lithologic traps, fault-lithologic traps, low-amplitude anticline-lithologic traps, and single sand body up-dip thin-out traps, and these facilitated traps control the distribution of oil and water in the study area, forming a hydrocarbon accumulation model of reservoir control by sedimentary microfacies, transport control by oil source faults and sand bodies, and enrichment control by traps. This study can provide effective theoretical guidance for the exploration of the Putaohua reservoir in the Sanzhao Sag of the Songliao Basin.

Key words： main controlling factors of hydrocarbon accumulation; accumulation mode; transportation system; Putaohua Reservoir; Sanzhao Sag; Songliao Basin

Cite this article

Qin Yingfeng . Main Controlling Factors and Reservoir Formation Mode of Oil and Gas in the Putaohua Reservoir in Sanzhao Sag, Songliao Basin[J]. Special Oil & Gas Reservoirs, 2023 , 30(4) : 28 -34 . DOI: 10.3969/j.issn.1006-6535.2023.04.004

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