Jurassic Source Rock Characteristics and Resource Evaluation in Junggar Basin

Yongshen Zhou; Aihua Fu; Xiaojie Zhao

doi:10.62051/ijnres.v3n1.08

Authors

Yongshen Zhou
Aihua Fu
Xiaojie Zhao

DOI:

https://doi.org/10.62051/ijnres.v3n1.08

Keywords:

Junggar Basin; Jurassic coal measures source rocks; Sedimentary environment; Control factors.

Abstract

Junggar Basin is one of the important petroliferous basins in China. Based on sedimentology, palaeogeography, geochemical characteristics, tectonic thermal evolution and other aspects, this study analyzes the characteristics and distribution law of source rocks, and predicts the total oil and gas resources of Jurassic in the basin. Middle and Lower Jurassic is the main hydrocarbon source rock strata of Jurassic, and a large set of thick coal and dark mudstone are developed on delta, shore-shallow lake and deep lake facies in the basin, among which Badaowan Formation is 200 ~ 800 m thick; Xishanyao Formation is 50m ~ 550m thick, which has great development prospect, but there are few exploration results at present. Through geochemical index analysis and thermal evolution simulation of source rocks, the middle and lower Jurassic source rocks are mostly medium-good source rocks, and the distribution and thermal evolution degree of mature source rocks in the south and east of the basin are higher than those in the north and west of the basin, so they have the conditions for mass production of hydrocarbons.

References

CHEN F J, WANG X W, WANG X W. “Prototype and tectonic evolution of the Junggar basin, northwestern China”, Earth Science Frontiers, Vol.03, pp. 77-89, 2005.

HE D F, ZHANG L, WU S T, et al. “Tectonic evolution stages and features of the Junggar Basin”, Oil＆Gas Geology, Vol. 39(05), pp. 845-861, 2018.

ZHU X, LI S, WU D, et al. “Sedimentary characteristics of shallow-water braided delta of the Jurassic, Junggar basin, Western China”, Journal of Petroleum Science and Engineering, Vol.149, pp. 591-602,2017.

DING Y C, XIANG Y J, ZHAO J Y, et al. “Types of Composite Anticlines and Pool Formation Characteristics of the Lower Play in Southerm Margin of the Junggar Basin”, Xinjiang Geology, Vol.39(02), pp. 254-263, 2021.

FAN S, LU Y H, LI L, et al. “Geochemical characterstics, distribution and petroleum geological significance of Triassic-Jurassic source rocks in the Tugeerming and surrounding areas of Kuga Depression, Tarim Basin”, Natrual Gas Geoscience, Vol. 33(12), pp. 2074-2086, 2022 .

WEI D T, ZHAO Y C, A B L M T, et al. “Difference of Hydrocarbon Accumulation in the Foreland Thrust-fold Belt of the Southern Junggar Basin”, Geological Journal of China Universities, Vol.16(03), pp. 339-350, 2010.

LI J, HAO A S, QI X N, et al. “Geochemical characteristics and exploration potential of Jurassic coal-formed gas in northwest China”, Natural Gas Geoscience, Vol.30(06), pp. 866-879+924, 2019.

CHEN J P, LIANG D G, WANG X L, et al. “Oi-source identification for the mixed oils derived from multiple source rocks in the Cainan Oilfield, Junggar Basin, Northwest China”, Part l: Fundamental geochemical features of source rocks. Petroleum Exploration and Development, Vol.04), pp. 20-24, 2003.

CHEN J P, WANG X L, DENG C P, et al. “Geochemical Features of Source Rocks and Crude Oil in the Junggar Basin, Northwest China”, Acta Geologica Sinica, Vol. 90(01), pp.37-67, 2016.

NATALIN B, BURTMAN V. “Evolution of the Altaid Tectonic Collage and Paleozoic Crustal Growth in Eurasia”, Nature, Vol. 364, 1993.

WU K Y, CHA M, WANG X L, et al. “Further Researches on the Tectonic Evolution and Dynamic Setting of the Junggar Basi”, Acta Geologica Sinica, Vol. 03, pp. 217-222, 2005.

FANG S H, JIA C Z, GUO Z J, et al. “New view on the Permian evolution of the Junggar basin and its implications for tectonic evolution”, Earth Science Frontiers, Vol. 03, pp. 108-12, 2006.

JIA J D. “The geology features and distribution of natural gas in junggar basin. Natural Gas Geoscience”, Vol.04, pp. 449-455, 2005.

ZHANG L, NIU J Q, ZHANG P X. “The Deposition Environment and Coal Accumulation Discipline of Kamustte Mining Site in Xinjiang”, Xinjiang Geology, Vol. 30(04), pp. 482-48, 2012.

QIAN Y, WANG Z D, ZHANG T, et al. “Geochemical characteristic of Jurassic source rocks and natural gas in the easter Jungar Basin and exploration potential of low-mature”, Acta Petrolei Sinica, Vol.38(01), pp. 44-54, 2017.

LI Y J, WANG T D, ZHANG Y Y, et al. “Natural Gas Genesis and Formation of Gas Pools in the South Margin of Junggar Basin”, Acta Sedimentologica Sinica, Vol. 03, pp. 529-534, 2004.

ZHU W, WANG R, LU X C, et al. “Yanshanian Tectonic Activities and Their Sedimentary Responses in Northwestern Junggar Basin”, Earth Science, Vol.46(05), pp. 1692-1709, 2021.

YANG H B, CHEN L, KONG Y H. “New scheme of tectonic unit division in Junggar Basin”, Xinjiang Petroleum Geology, Vol.06, pp. 686-688., 2004.

SHAO L Y, XU X T, WANG S, et al. “Research progress of palaeogeography and palaeoenvironmental evolution of coal-bearing series in China”, Journal of Palaeogeography, (Chinese Edition) Vol. 23(01), pp. 19-38, 2021.