The influence of sedimentary systems and paleo-geomorphology on the physical properties of a reservoir in the Niubao formation, Lunpola basin, central Tibetan Plateau
Tóm tắt
The Lunpola basin is the only sedimentary basin with industrial oil flow on the Tibetan plateau, and the Niubao formation is the main oil and gas reservoir within it. However, in the previous papers, only the sequence stratigraphy, oil and gas geological characteristics, and some geochemical indicators of the Lunpola basin were researched, which is not point out in the paleo-geomorphology and sedimentary microfacies that are beneficial to the reservoir, as well as their spatial distribution. This paper focuses on reconstructing the paleo-topography and the sedimentary systems of the Lunpola basin and analyzing the relationship between reservoir’s physical properties and the former two during the Eocene period. The results show two types of paleo-geomorphology, with great influence on the physical properties of the reservoir. Research into the physical properties of sedimentary systems has found that porosity and permeability are positively correlated with some sedimentary microfacies, and the physical properties of reservoirs have obvious advantages in some of these. These discoveries provide a theoretical basis for the evaluation of the properties of reservoirs on the Qinghai-Tibet Plateau.
Tài liệu tham khảo
Ai H, Lan L, Zhu H et al (1998) Diagenesis and pore evolution of lower tertiary reservoir in Lunpola basin. Pet Explor Dev 06(25):3–5 This is translated from Chinese article
DeCelles PG, Kapp P, Gehrels GE (2007) Late Cretaceous to middle Tertiary basin evolution in the central Tibetan Plateau: changing environments in response to tectonic partitioning, aridification, and regional elevation gain. Geol Soc Am Bull 119(5-6):654–680
Deng T, Wang S, Jie G et al (2012) A mammalian fossil from the Dingqing formation in the Lunpola Basin, northern Tibet, and its relevance to age and paleo-altimetry. Chin Sci Bull 57(2-3):261–269 This is translated from Chinese article
Du B, Tan F, Chen M et al (2004) Sedimentary features and petroleum geology of the Lunpola Basin, Xizang. Sedimentary Geology and Tethyan Geology 24(4):46–54 This is translated from Chinese article.
Fu X, Wang J, Tan F et al (2012) Geochemistry of terrestrial oil shale from the Lunpola area, northern Tibet, China. Int J Coal Geol 102:1–11
Gawthorpe RL (1987) Tectono-sedimentary evolution of the Bowland Basin, N England, during the Dinantian. J Geol Soc 144(1):59–71
Gawthorpe RL, Fraser AJ, Collier REL (1994) Sequence stratigraphy in active extensional basins: implications for the interpretation of ancient basin fills. Mar Pet Geol 11:642–658
He HY, Sun JM, Li QL et al (2012) New age determination of the Cenozoic Lunpola basin, central Tibet. Geol Mag 149(1):141–145
Heidlauf DT, Hsui AT, Klein G d et al (1986) Tectonic subsidence analysis of the Illinois Basin. J Geol 94(6):779–794
Hu X, Huang S (2016) Physical properties of reservoir rocks. In: Springer Mineralogy, pp 7–164
Jia G, Yang B, Ma Y et al (2015) Paleoelevation of Tibetan Lunpola basin in the Oligocene–Miocene transition estimated from leaf wax lipid dual isotopes. Glob Planet Chang 126:14–22 This is translated from Chinese article
Lambiase JJ (1990) A model for tectonic control of lacustrine stratigraphic sequences in continental rift basins. In: Katz BJ (ed) Lacustrine basin exploration: case studies and modern analogs, vol 50. American Association of Petroleum Geologists Memoir, pp 265–276
Li D, Xing F, Chen X et al (2020) Characteristics and main controlling factors of lacustrine dolomite reservoir of Eocene Niubao formation in Lunpola Basin. J Northeast Pet Univ 2(44):24–37 This is translated from Chinese article.
Lin S (2012) Research on provenance area and subsidence history of Lunpola basin, Tibet [D]. This is translated from Chinese article.
Ma P, Wang L, Ran B (2013) Analysis on the subsidence history of the Cenozoic Lunpola basin in the Central Qinghai-Tibet Plateau. Acta Petrol Sin 29(3):990–991 This is translated from Chinese article
Ma P, Wang L, Wang C et al (2015a) Organic-matter accumulation of the lacustrine Lunpola oil shale, central Tibetan Plateau: controlled by the paleoclimate, provenance, and drainage system. Int J Coal Geol 147:58–70
Ma P, Wang C, Wang L, Li Y, Hu J (2015b) Sedimentology and organic properties of lower Tertiary lacustrine source rocks, Lunpola Basin, central Tibetan Plateau: implications for hydrocarbon potential. Mar Pet Geol 66:1029–1041
Magara K (1976) Thickness of removed sedimentary-rocks, paleopore pressure, and paleotemperature, southwestern part of western Canada Basin. AAPG Bulletin 60(4):554–565
Mou Z, Chen Z, Lu Y et al (2000) Recovery of denudation thickness of Mesozoic in the Northern Margin of Qaidam Basin. Pet Explor Dev 27(1):35–37 This is translated from Chinese article
Rowley DB, Currie BS (2006) Palaeo-altimetry of the late Eocene to Miocene Lunpola basin, central Tibet. Nature 439(7077):677–681
Schmoker JW, Halley RB et al (1982) Carbonate porosity versus depth - a predictable relation for South Florida. Aapg Bulletin-American Association of Petroleum Geologists 66(12):2561–2570
Sclater JG, Christie PAF (1980) Continental stretching: an explanation of the post-mid-Cretaceous subsidence of the central North Sea basin. 85(B7):3711–3739
Steinke S, Kienast M, Hanebuth T (2003) On the significance of sea-level variations and shelf paleo-morphology in governing sedimentation in the southern South China Sea during the last deglaciation. Mar Geol 201:1–3
Sun J, Qinghai X, Liu W et al (2014) Palynological evidence for the latest Oligocene− early Miocene paleoelevation estimate in the Lunpola Basin, central Tibet. Palaeogeogr Palaeoclimatol Palaeoecol 399:21–30
Wang L, Wang C, Li Y, Zhu L, Wei Y (2011) Sedimentary and organic geochemical investigation of tertiary lacustrine oil shale in the central Tibetan Plateau: palaeolimnological and palaeoclimatic significances. Int J Coal Geol 86(2-3):254–265
Watts AB, Ryan WBF (1976) Flexure of the lithosphere and continental margin basins. Tectonophysics 36(1-3):25–44
Wei W, Yongchao L, Xing F et al (2017) Sedimentary facies associations and sequence stratigraphy of source and reservoir rocks of the lacustrine Eocene Niubao Formation (Lunpola Basin, central Tibet). Mar Pet Geol 86:1273–1290
Zeng Y, Xiugen F, Zeng S (2017) Organic geochemistry and oil-generating potential of the Oligocene–Early Miocene Dingqinghu formation sediments in the Lunpola Basin, Tibet. Pet Geosci 23(4):440–453
Zhao S, Xie X, Liu Z et al (2019) The controlling effect of paleotopography on the sedimentary system of faulted basin: a case study of the Eocene Niubao formation in Lunpola basin, Qinghai-Tibet Plateau. Geol Sci Technol Inf (02):53–64 This is translated from Chinese article