Volcanic facies and their reservoirs characteristics in eastern China basins

Abstract

In these years, with more and more volcanic oil and gas fields being discovered and developed, the volcanic rocks reveal a great petroleum potential in the eastern basins of China. There are five volcanic facies identified in the study area, which include volcanic conduit facies, explosive facies, effusive facies, extrusive facies, and volcanogenic sedimentary facies. The subaerial eruption usually happened in Mesozoic and Paleocene, and subaquatic eruption in Eocene. The upper subfacies and top autoclastic brecciation of effusive facies of subaquatic volcanic rocks and pyroclastic flow subfacies of explosive facies of subaerial volcanic rocks are the most favorable volcanic reservoirs. The intermittent belt formed between two times of volcanic eruptions is most effective for reservoirs both in subaquatic and subaerial volcanic rocks. Their main porosity types are interclast porosity, interflow laminar porosity, vesicular and gas pipes porosity, intercrystalline sieve of moldic porosity, secondary dissolution porosity, and tectonic fracture. Developed between pre-emplacement stage and final cooling, the primary porosity may lead to high porosity and permeability, and the secondary porosity usually developed upon them. The porosity of volcanic rocks was less influenced by the compaction and the burial depth.

Keywords

volcanic facies / volcanic reservoir / porosity / eastern China

References

Chen J W, Wang D F, Zhang X D, . Analysis of Volcanic Facies and Apparatus of Yingchen Formation in Xujiaweizi Faulting Depression, Songliao Basin, Northeast China. Earth Science Frontiers, 2000, 7(4): 371-379.

Duan Q L, Tan W Y, Yang C C, . A Review on the Late Mesozoic Extensional Tectonics on the Eastern North China Craton. Progress in Geophysics, 2007, 22(2): 403-410.

Feng Z Q. Exploration Potential of Large Qingshen Gas Field in the Songliao Basin. Natural Gas Industry, 2006, 26(6): 1-5.

Jin C S, Zhao C L. The Volcanic Rocks Geochemical Features of South of Western Sag in Liaohe Basin. Journal of China University of Petroleum, 1999, 23(6): 17-19.

Lee G H, Kwon Y I, Yoon C S, . Igneous Complexes in the Eastern Northern South Yellow Sea Basin and Their Implications for Hydrocarbon Systems. Marine and Petroleum Geology, 2006, 23: 631-645.

Liu H F, Liang H S, Li X Q, . The Coupling Mechanisms of Mesozoic-Cenozoic Rift Basins and Extensional Mountain System in Eastern China. Earth Science Frontiers, 2000, 7(4): 477-486.

Liu S W. Characteristics and Favorable Reservoir Forming Conditions of Igneous Reservoir in Liaohe Basin. Special Oil and Gas Reservoirs, 2001, 8(3): 6-9.

Liu W F, Zhu X M. Reservoir Space Evolution of Volcanic Rocks in the Yingcheng Formation of the Xujiaweizi Fault Depression, the Songliao Basin. Petroleum Geology & Experiment, 2005, 27(1): 44-49.

Liu W Z, Wang P J, Men G T, . Characteristics of Deep Volcanic Reservoirs in Northern Songliao Basin. Oil & Gas Geology, 2003, 24(1): 28-31.

Luo J L, Zhang C L. Characteristics and Oil Source for Mesozoic Volcanic Pools in Fenghuadian Region. Oil & Gas Geology, 2002, 23(4): 357-360.

Moore A G, Cas R A F, Beresford S W, . Geology of an Archaean Metakomatiite Succession, Tramways, Kambalda Niprovince, Western Australia: Assessing the Extent to Which Volcanic Facies Architecture and Flow Emplacement Mechanisms Can be Reconstructed. Australian Journal of Earth Sciences, 2000, 47: 659-673.

Petford N, McCaffrey K J W. Hydrocarbons in Crystalline Rocks. Geological Society, London, Special Publications, 2003, 214: 7-35.

Qiu J X, Tao K Y, Zhao J L. Volcanic Rocks, 1996 Beijing: Geological Publishing House, 10-22.

Ren Z W, Jin C S. Reservoir Space Feature of the Volcanic Rocks in the Area of Well Wa-609, Liaohe Sag. Petroleum Exploration and Development, 1999, 26(4): 54-56.

Schutter S R. Occurrence of Hydrocarbons in and around Igneous Rocks. Hydrocarbons in Crystalline Rocks. Geological Society, London, Special Publications, 2003, 214: 35-68.

Shu P, Qu Y M, Ding R X, . Research on Lithology and Facies of Volcanic Reservoirs in Qingshen Gas Field of North Songliao Basin. Petroleum Geology & Development in Daqing, 2007, 26(6): 31-35.

Sruoga P, Rubinstein N. Processes Controlling Porosity and Permeability in Volcanic Reservoirs from the Austral and Neuquén Basins, Argentina. AAPG Bulletin, 2007, 91(1): 115-129.

Tao K Y, Yang Z L, Wang L B, . Oil Reservoir Geological Model of Basalt in Minqiao, Nofthern Jiangsu Province. Earth Science—Journal of China University Geosciences, 1998, 23(3): 272-276.

Wang P J, Feng Z Q. Volcanic Rocks in Petroliferous Basins, 2008 Beijing: Science Press, 39.

Wang Z X, Zhao C L, Liu M H. Volcanic Lithofacies and Their Petrophysical Properties in Abei Oilfield. Journal of the University of Petroleum, China, 1991, 15(3): 15-21.

Wu Y Y, Zhou L Q. Formation and Distribution Features of Large-Medium Oil and Gas Fields in Main Fault Depressions in the Songliao Basin. Petroleum Geology & Experment, 2007, 29(3): 231-237.

Wu Z P, Hou X B, Li W. Discussion on Mesozoic Basin Patterns and Evolution in the Eastern North China Block. Geotectonica et Metallogenia, 2007, 31(4): 385-399.

Xiao J, Kanaye T, Wang H, . Characteristics of Igneous Rocks and Their Favorable Pool-Forming Conditions in Nanpu Sag, Bohai Bay Basin. Geological Science and Tecnology Information, 2004, 23(1): 52-56.

Xiao S B. Classification of Igneous and Its Related Reservoir in Bohai Gulf Basin. Special Oil and Gas Reservoirs, 1999, 6(4): 6-10.

Yang S L, Liu W Z, Yu S Q, . Pore Textures and Its Causes of Volcanic Reservoir in Songliao Basin. Journal of Jinlin University (Earth Science Edition), 2007, 37(3): 506-512.

Yu J R, Tang T J. Preliminary Study on the Abei Andersite Reservoir in Erlian Basin. Petroleum Exploration and Development, 1988, 1: 38-44.

Zhang Y Y, Zhao Y, Dong S W, . Tectonic Evolution Stages of the Early Cretaceous Rift Basins in Eastern China and Adjacent Areas and Their Geodynamic Background. Earth Science Frontiers, 2004, 11(3): 123-133.

Zhao H L, Li X G, Chen Z Y, . Petrology and Genesis of Mesozoic Volcanic Rocks in Tuo32 Well Block of Liaohe Oilfield. Oil & Gas Geology, 2006, 27(4): 549-556.

Zhao W Z, Zou C N, Feng Z Q, . Geological Features and Evaluation Techniques of Deep-Seated Volcanic Gas Reservoirs, Songliao Basin. Petroleum Exploration and Development, 2008, 35(2): 129-142.

Zhou L Q, Wu Y Y, Zhang H. Zoned-Distribution of Oil and Gas Accumulation in Fault Depressions in the Songliao Basin. Petroleum Geology & Experiment, 2007, 29(1): 7-12.

Zou C N, Zhao W Z, Jia C Z, . Formation and Distribution of Volcanic Hydrocarbon Reservoirs in Sedimentary Basins of China. Petroleum Exploration and Develoment, 2008, 35(3): 257-271.