Reservoir origin and characterization of gas pools in intrusive rocks of the Yingcheng Formation, Songliao Basin, NE China

Tang, Huafeng; Zhao, Xianzheng; Shao, Mingli; Sun, Xiaobin; Yan, Zhang; Phiri, Cryton

doi:10.1016/j.marpetgeo.2017.03.016

Cited by 12 publications

(4 citation statements)

References 27 publications

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“…The K1sh had the most abundant source rock, with a mean TOC value of 1.38%, while the maximum TOC reached 4.35%. The dark mudstones in the K1y and K1sh, which formed in a lacustrine environment, were the main source rocks of the study area [67]. We optimized the decoupled source rock definition to precisely define the source rocks' properties.…”

Section: Source Rock Propertiesmentioning

confidence: 99%

“…Hydrocarbon and liquid inclusions can be trapped concurrently during hydrocarbon migration [91]. Therefore, these inclusions offer relatively accurate information regarding the temperature of mineral growth at the time of the fluid migration and entrapment, which has been widely used in petroleum geology [1,67,[92][93][94].…”

Section: Definition Of Key Hydrocarbon-accumulation Momentsmentioning

confidence: 99%

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3D-Basin Modeling of the Changling Depression, NE China: Exploring Petroleum Evolution in Deep Tight Sandstone Reservoirs

Zhang

Guo

et al. 2019

Energies

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The Changling Depression is the largest and most resource-abundant reservoir in the South Songliao Basin, NE China. The petroleum evolution rules in the Lower Cretaceous deep tight sandstone reservoir are unclear. In this study, 3D basin modeling is performed to analyze the large-scale petroleum stereoscopic migration and accumulation history. The Changling Depression has a complex fault system and multiple tectonic movements. The model is calibrated by the present formation temperatures and observed maturity (vitrinite reflectance). We consider (1) three main erosion episodes during the burial history, one during the Early Cretaceous and two during the Late Cretaceous; (2) the regional heat flow distribution throughout geological history, which was calibrated by abundant measurement data; and (3) a tight sandstone porosity model, which is calibrated by experimental petrophysical parameters. The maturity levels of the Lower Cretaceous source rocks are reconstructed and showed good gas-generation potential. The highest maturity regions are in the southwestern sag and northern sag. The peak hydrocarbon generation period contributed little to the reservoir because of a lack of seal rocks. Homogenization temperature analysis of inclusions indicated two sets of critical moments of gas accumulation. The hydrocarbon filling in the Haerjin and Shuangtuozi structures occurred between 80 Ma and 66 Ma, while the Dalaoyefu and Fulongquan structures experienced long-term hydrocarbon accumulation from 100 Ma to 67 Ma. The homogenization temperatures of the fluid inclusions may indicate a certain stage of reservoir formation and, in combination with the hydrocarbon-accumulation simulation, can distinguish leakage and recharging events.

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Section: Source Rock Propertiesmentioning

confidence: 99%

Section: Definition Of Key Hydrocarbon-accumulation Momentsmentioning

confidence: 99%

3D-Basin Modeling of the Changling Depression, NE China: Exploring Petroleum Evolution in Deep Tight Sandstone Reservoirs

Zhang

Guo

et al. 2019

Energies

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“…However, the combination of volcanism and sedimentation created good conditions for the formation of oil and gas reservoirs [23,24]. In recent years, several large tight natural gas reservoirs have been discovered in the Songliao Basin [25], while some are associated with the volcanic rocks of the basin [6,26,27]. In the Dehui fault depression that is the subject of this study, both major tight sandstone and volcanic gas reservoirs are found in the Cretaceous strata, with great potential for resources and are good exploration prospects.…”

Section: Introductionmentioning

confidence: 99%

Accumulation and Distribution of Natural Gas Reservoir in Volcanic Active Area: A Case Study of the Cretaceous Yingcheng Formation in the Dehui Fault Depression, Songliao Basin, NE China

et al. 2021

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Tight gas sandstone and volcanic gas reservoirs have received global attention in the energy arena for further exploration and exploitation attempts. Considering the Yingcheng Formation of Dehui fault depression in the Songliao Basin as an example, this study focused on the accumulation and distribution of natural gas reservoirs in volcanic area in a fault depression basin. Volcanic activities occurred in the Yingcheng Formation, which is distributed centrally in the northwest of the study area. During the sedimentation of the Yingcheng Formation, fan-delta, lacustrine, and nearshore subaqueous fan facies were deposited. The source rocks of the Yingcheng Formation have high abundance of organic matter mainly in type III at high-overmature stages, indicating favorable conditions for gas production. The porosity of volcanic reservoir is 3.0%-14.8%, the permeability is 0.0004 mD-2.52 mD, and the pore types are mainly secondary dissolved pores and fractures. Besides, the porosity of the tight sandstone reservoir is 0.5%-11.2%, and the permeability is 0.0008 mD-3.17 mD. The pore types are mainly interparticle pores, with a small proportion of intraparticle pores and microfractures. The intrusion of late volcanic magma provided sufficient heat for the thermal maturity progression of organic matter in Yingcheng Formation and promoted the generation of natural gas in large quantities. Volcanic rocks formed at the early and middle stages of volcanic activities occupied the sedimentary space and hindered the development of sedimentary sand bodies to a certain extent. However, volcanic rocks can become the seal to promote the formation of tight sandstone gas traps. Comparing tight sandstone reservoirs with volcanic ones, the latter are less affected by compaction; thus, their petrophysical properties do not vary much with depth, showing more homogeneous characteristics. The pyroclastic rocks influenced by volcanic activity and the secondary pores formed by dissolution in the later stages also provide reservoir space for gas accumulation. Ultimately, the tight sandstone and volcanic rocks in the study area form a complex gas reservoir system, which can become a reference for exploration and exploitation of natural gas in other petroliferous fault depressions that are affected by volcanisms.

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“…The volcanic rocks encountered are characterized by acid-intermediate to mafic volcanic rocks, lavas, pyroclastic lavas, pyroclastic rocks, and sedimentary pyroclastic rocks . Generally, various lithologies can form favorable reservoirs (Tang et al, 2012;Wu et al, 2012;Xiu et al, 2016), but different types of lithological combinations feature variable spatial composition and physical properties of reservoir (Tang et al,2017b). Furthermore, different volcanic rock combinations correspond to different lithofacies modes.…”

Section: Introductionmentioning

confidence: 99%

Facies Architecture Model of the Shimentan Formation Pyroclastic Rocks in the Block‐T Units, Xihu Sag, East China Sea Basin, and its Exploration Significance

Dai

Tang

Zuyi³

et al. 2019

Acta Geologica Sinica (Eng)

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A gas field consisting of volcanic reservoir rocks was discovered in the block-T units of the Xihu Sag, East China Sea Basin. The lithology of the volcanic rocks is dominated by tuff and reworked tuff. The lithofacies are dominated by base surge deposits of explosive facies. As the architecture model of volcanic facies is still uncertain, it has restricted the exploration and development of mineral resources in this area. Using core and cuttings data, the lithology, lithofacies, geochemistry as well as grain size characteristics of volcanic rocks were analyzed. Based on these analyses, the volcanic rocks in the well section are divided into three eruptive stages. The transport direction of each volcanic eruption is analyzed using crystal fragment size analysis. The facies architecture of the block-T units was established based on the reconstruction results of paleo-geomorphology. The results show that the drilling reveals proximal facies (PF) and distal facies (DF) of the volcanic edifices. However, the crater-near crater facies (CNCF) are not revealed. Compared with the reservoirs of the Songliao Basin, it is shown that the volcanic rocks in the Xihu Sag have good exploration potential; a favorable target area is the CNCF near the contemporaneous fault.

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Reservoir origin and characterization of gas pools in intrusive rocks of the Yingcheng Formation, Songliao Basin, NE China

Cited by 12 publications

References 27 publications

3D-Basin Modeling of the Changling Depression, NE China: Exploring Petroleum Evolution in Deep Tight Sandstone Reservoirs

3D-Basin Modeling of the Changling Depression, NE China: Exploring Petroleum Evolution in Deep Tight Sandstone Reservoirs

Accumulation and Distribution of Natural Gas Reservoir in Volcanic Active Area: A Case Study of the Cretaceous Yingcheng Formation in the Dehui Fault Depression, Songliao Basin, NE China

Facies Architecture Model of the Shimentan Formation Pyroclastic Rocks in the Block‐T Units, Xihu Sag, East China Sea Basin, and its Exploration Significance

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