Evolution of diagenetic fluid of ultra-deep Cretaceous Bashijiqike Formation in Kuqa depression

Abstract

Diagenetic fluid types of the Cretaceous Bashijiqike formation are restored based on the analysis of petrographic, electron microprobe composition, inclusions homogenization temperature, salinity and vapor composition and laser carbon and oxygen isotope of diagenetic mineral, and regional geological background. Diagenetic fluid evolution sequence is analyzed on this basis. The crystalline dolomite cement has a low concerntration of Sr, high concerntration of Mn and higher carbon isotope, showing that the crystalline dolomite is affected by meteoric fresh water, associated with the tectonic uplift of late Cretaceous. Similar δ¹³CPDB, negative transfer of δ¹⁸OPDB and the differentiation of the concerntration of Fe and Mn indicate that the diagenetic fluid of the vein dolomite cement is homologous with the diagenetic fluid of the crystalline dolomite cement, temperature and depth are the dominant factors of differential precipitation between these two carbonate cements. Anhydrite cements have high concerntration of Na, extremely low concerntration of Fe and Mn contents. Based on these data, anhydrite cements can be thought to be related to the alkaline fluid overlying gypsum-salt layer produced by dehydration. The barite vein has abnormally high concerntration of Sr, ultra-high homogenization temperature and high-density gas hydrocarbon inclusions, which is speculated to be the forward fluid by intrusion of late natural gas. Coexistence of methane inclusions with CO₂ gas proves existence of acid water during the accumulation of natural gas in the late stages. Therefore, the alkaline environment and associated diagenesis between the meteoric fresh water in epidiagentic stage and carbonic acid in the late diagenesis have dominated the process of diagenesis and reservoir, the secondary porosity and fracture zone formed by gas accumulation is a favorable play for the exploration of ultra-deep reservoirs.

Keywords

ultra-deep reservoirs / diagenetic minerals / diagenetic fluids / alkaline fluid / meteoric fresh water

References

[1] SunL-d, ZouC-n, ZhuR-k, ZhangY-h, ZhangS-c, ZhangB-m, ZhuG-y, GaoZ-yong. Formation, distribution and potential of deep hydrocarbon resources in China [J]. Petroleum Exploration and Development, 2013, 40(6): 687-695

[2] ZhangR-h, YangH-j, WangJ-p, ShouJ-f, ZengQ-l, LiuQun. The formation mechanism and exploration significance of ultra-deep, low-porosity and tight sandstone reservoirs in Kuqa depression, Tarim Basin [J]. Acta Petrologica Sinica, 2014, 35(6): 1058-1062

[3] DuttonS P, LoucksR G. Reprint of: Diagenetic controls on evolution of porosity and permeability in lower Tertiary Wilcox sandstones from shallow to ultra-deep (200–6700 m) burial, Gulf of Mexico Basin, USA [J]. Marine & Petroleum Geology, 2010, 27(8): 1775-1787

[4] HelgesonH C, KnoxA M, OwensC E, ShockE L. Petroleum, oil field waters, and authigenic mineral assemblages are they in metastable equilibrium in hydrocarbon reservoirs? [J]. Geochimica Et Cosmochimica Acta, 1993, 57(14): 3295-3339

[5] HanD-l, LiZ, HanY-x, LiuJ-q, LiW-f, LiS-lan. Sealing feature of burial diagenesis environment and its controls on differentiation of cementation in Cretaceous sandstone reservoir in Kelasu structure zone, Kuqa depression [J]. Acta Petrologica Sinica, 2009, 25(10): 2351-2362

[6] MoradS, KetzerJ M, DerosL F. Spatial and temporal distribution of diagenetic alterations in siliciclastic rocks: Implications for mass transfer in sedimentary basins [J]. Sedimentology, 2000, 47(s1): 95-120

[7] LiL D, ChenC-y, TanQ, FengWei. Diagenetic evolution of Wutonggou reservoir in southeastern margin of beisantai swell, Junggar basin [J]. Xinjiang Petroleum Geology, 2015, 36(4): 409-414

[8] StoessellR K, PittmanE D. Secondary porosity revisited: The chemistry of feldspar dissolution by carboxylic acids and anions [J]. Aapg Bulletin, 1990, 74(12): 1795-1805

[9] SuA, DuJ-m, ChenH-h, YuY, LeiM-zhu. Diagenetic fluid type and activity history of controlling the development of abnormal pore zone: Taking the north margin of Baodao Sag, Qiongdongnan Basin as an example [J]. Natural Gas Geoscience, 2016, 27(10): 1837-1839

[10] ZhuH-h, ZhongD-k, YaoJ-l, SunH-t, NiuX-b, LiangX-w, YouY, LiXin. Alkaline diagenesis and its effects on reservoir porosity: A case study of Upper Triassic Chang7 tight sandstones in Ordos Basin, NW China [J]. Petroleum Exploration and Development, 2015, 42(1): 51-58

[11] DouW-c, LiuL-f, WuK-j, XuZ-j, FengXu. Origin and significance of secondary porosity: A case study of upper Triassic tight sandstones of Yanchang formation in ordos basin, China [J]. Journal of Petroleum Science & Engineering, 2017, 149: 485-496

[12] DingX-q, HanM-m, ZhangS-n, FuM-y, WanY-li. Roles of meteoric water on secondary porosity of siliciclastic reservoirs [J]. Geological Review, 2011, 60(1): 148-156

[13] LuZ-y, ChenH-h, FengY, WuY, XiongW-l, ShangPei. Evidences of multi-episodically paleo-fluid flow and its significance in ordovician of guchengxu upshift, tarim basin [J]. Earth Science, 2015, 40(9): 1530-1532

[14] BiehlB C, ReuningL, SchoenherrJ, LewinA, LeupoldM, KuklaP A. Do CO₂-charged fluids contribute to secondary porosity creation in deeply buried carbonates? [J]. Marine & Petroleum Geology, 2016, 76: 176-186

[15] WeedmanS D, BrantleyS L, ShirakiR, PoulsonS R. Diagenesis, compaction, and fluid chemistry modeling of a sandstone near a pressure seal: Lower tuscaloosa formation, gulf coast [J]. Aapg Bulletin, 1996, 80(7): 1045-1064

[16] YangZ, ZouC-n, HeS, HeZ-l, WuH-z, CaoF, LiQ-y, MengX-l, WangF-r, XiaoQ-lin. Formation mechanism of carbonate cemented zones adjacent to the top over-pressured surface in the central Junggar Basin, NW China [J]. Science China: Earth Science, 2010, 40(4): 444-448

[17] RasmussenB, GloverJ E. Fluid evolution interpreted from diagenetic assemblages and salinity data in permotriassic^sandstone, northern perth basin, western australia [J]. Journal of Sedimentary Research, 1996, 66(3): 492-500

[18] GlasmannJ R. Geochemical evidence for the history of diagenesis and fluid migration: brent sandstone, heather field, north sea [J]. Clay Minerals, 1989, 24(2): 255-284

[19] ZhuG-y, ZhangS-c, ChenL, YangH-j, YangW-j, ZhangB, SuJin. Coupling relationship between natural gas charging and deep sandstone reservoir formation: A case from the Kuqa Depression, Tarim Basin [J]. Petroleum Exploration and Development, 2009, 36(3): 347-355

[20] ShiZ-j, WangY, TianY-m, WangC-cheng. Cementation and diagenetic fluid of algal dolomites in the Sinian Dengying Formation in southeastern Sichuan Basin [J]. Science China: Earth Science, 2013, 43(2): 317-323

[21] ZhangJ-t, JinX-h, LiS-j, LiW, SuY-pu. Types and origin of pore-fillings from the 5th member of the Ordovician Majiagou Formation in Ordos Basin [J]. Oil & Gas Geology, 2016, 37(5): 686-688

[22] WangY, LiuJ, WangJ-g, ShiK-b, WangC, NiuY-j, ShaoG-q, LiuBo. Major controlling factors for the formation of inter-layer of Donghe sandstone of Donghe1 reservoir in Tarim Basin and its fluid source [J]. Acta Petrolei Sinica, 2015, 36(2): 177-180

[23] YouL, LiC, ZhangY-z, GanJ, LiuJ-huan. Distribution and genetic mechanism of carbonate cements in the Zhuhai formation reservoirs in Wenchang a sag, pear river mouth basin [J]. Oil & Gas Geology, 2012, 33(6): 886-888

[24] PudloD, RenbachV, AlbrechtD, GanzerL, GernertU, WienandJ, KohiheppB, GauppR. The impact of diagenetic fluid-rock reactions on rotliegend sandstone composition and petrophysical properties (Altmark area, central Germany) [J]. Environmental Earth Sciences, 2012, 67(2): 369-384

[25] BoolerJ, TuckerM E. Distribution and geometry of facies and early diagenesis: The key to accommodation space variation and sequence stratigraphy: Upper cretaceous congost carbonate platform, Spanish Pyrenees [J]. Sedimentary Geology, 2002, 146(3): 225-247

[26] TaylorK G, GawthorpeR L, Fannon-HowellS. Basin-scale diagenetic alteration of shoreface sandstones in the Upper Cretaceous Spring Canyon and Aberdeen Members, blackhawk formation, book Cliffs, Utah [J]. Sedimentary Geology, 2004, 172(12): 99-115

[27] BeitlerB, ParryW T, ChanM A. Fingerprints of fluid flow: Chemical diagenetic history of the jurassic navajo sandstone, southern Utah, USA. [J]. Journal of Sedimentary Research, 2005, 75(4): 547-561

[28] LuoJ-l, MoradS, ZhangX-l, YanS-k, WuF-l, LiY-h, XueJ-min. Reconstruction of the diagenesis of the fluvial-lacustrinedeltaic sandstones and its influence on the reservoir quality evolution [J]. Science China Earth Sciences, 2002, 45(7): 616-634

[29] SchneiderJ, BakkerR J, BechstdtT, LittkeR. Fluid evolution during burial diagenesis and subsequent orogenetic uplift: The la vid group (cantabrian zone, northern spain) [J]. Journal of Sedimentary Research, 2008, 78(34): 282-300

[30] BjørlykkeK, JahrenJ. Open closed geochemical systems during diagenesis in sedimentary basins: Constraints on mass transfer during diagenesis and the prediction of porosity in sandstone and carbonate reservoirs [J]. Aapg Bulletin, 2012, 96(12): 2193-2214

[31] LiZ, HanD-l, ShouJ-feng. Diagenesis systems and their spatio-temporal attributes in sedimentary basins [J]. Acta Petrologica Sinica, 2006, 22(8): 2154-2160

[32] CaiC-f, MeiB-w, MaT, ZhaoH-j, FangX-lin. The Source, distribution of organic acids in oilfield waters and their effect on mineral diagenesis in Tarim Basin [J]. Acta Sedimentological Sinica, 1997, 15(3): 103-104

[33] PanR, ZhuX-m, LiuF, LiY, ZhangJ-feng. Cretaceous diagenesis and its control on reservoir in Kelasu structure zone, kuqa depression [J]. Acta Sedimentological Sinica, 2014, 32(5): 973-978

[34] LaiJ, WangG-w, ChaiY, RanY, ZhangX-tao. Depositional and diagenetic controls on pore structure of tight gas sandstone reservoirs: Evidence from lower cretaceous bashijiqike formation in kelasu thrust belts, Kuqa Depression in Tarim Basin of West China [J]. Resource Geology, 2015, 65(2): 55-75

[35] WangJ-p, ZhangR-h, ZhaoJ-l, WangK, WangB, ZengQ-l, LiuChun. Characteristics and evaluation of fractures in ultra-deep tight sandstone reservoir: Taking Keshen Gas field in Tarim Basin, NW China example [J]. Natural Gas Geoscience, 2014, 25(11): 1735-1738

[36] YeY, ShenZ-y, ZhengL-b, WangH-z, FangD-jun. Diagenetic albitization in the Mesozoic and Cenozoic reservoir sandstones from Kuche Depression, North Tarim, Xinjiang, China [J]. Geological Journal of China Universities, 1999, 5(3): 251-259

[37] StorvollV, BjørlykkeK, KarlsenD, SaigalG. Porosity preservation in reservoir sandstones due to grain-coating illite: A study of the jurassic garn formation from the kristin and lavrans fields, offshore mid-norway [J]. Marine & Petroleum Geology, 2002, 19(6): 767-781

[38] ZhuL-f, ChenH-h, FengYong. Diagenetic environments of Ordovician carbonate rocks in Yuqi area, northern Tarim Basin: Evidence from fluid inclusion analysis [J]. Lithologic Reservoirs, 2013, 25(4): 42-43

[39] MuN-n, FuY-j, SchulzH-M, BerkW V. Authigenic albite formation due to water-rock interactions-case study: Magnus oilfield (UK, Northern North Sea) [J]. Sedimentary Geology, 2016, 331: 30-41

[40] SpőtlC, LongstaffeF J, RamseyerK, RűdingerB. Authigenic albite in carbonate rocks a tracer for deep-burial brine migration? [J]. Sedimentology, 2010, 46(4): 649-666

[41] GoldsteinR H. Fluid inclusions in sedimentary and diagenetic systems [J]. Lithos, 2001, 55(1): 159-193

[42] NedkvitneT, KarlsenD A, BjørlykkeK, LarterS R. Relationship between reservoir diagenetic evolution and petroleum emplacement in the Ula field, North Sea [J]. Marine & Petroleum Geology, 1993, 10(3): 255-270

[43] HaszeldineR S, SamsonI M, CornfordC. Dating diagenesis in a petroleum basin, a new fluid inclusion method [J]. Nature, 1984, 307(5949): 354-357

[44] WangZ-ming. Formation mechanism and enrichment regularities of Kelasu subsalt deep large gas field in Kuqa depression, Tarim Basin [J]. Natural Gas Geoscience, 2014, 25(2): 153-163

[45] MaoY-k, ZhongD-k, NengY, ZhangC-w, LiuY-l, WangA, HuX-lin. Fluid inclusion characteristics and hydrocarbons accumulation of the Cretaceous reservoirs in Kuqa foreland thrust belt, Tarim basin, Northwest China [J]. Journal of China University of Mining & Technoligy, 2015, 44(6): 1036-1038

[46] FengS-b, XuW-m, DunY-peng. Fluid inclusion characteristics of reservoirs in Kelasu tectonic zone of Kuqa Depression and its accumulation information [J]. Petroleum geology & Experiment, 2014, 36(2): 214-216

[47] GeorgeS C, VolkH, AhmedM. Geochemical analysis techniques and geological applications of oil-bearing fluid inclusions,with some australian case studies [J]. Journal of Petroleum Science & Engineering, 2007, 57(1): 119-138

[48] HansenS B, BergR W, StenbyE H. Raman spectroscopic studies of methane-ethane mixtures as a function of pressure [J]. Applied Spectroscopy, 2001, 55(6): 745-749

[49] LuW-j C I-m, BurrussR C, SongY-cai. A unified equation for calculating methane vapor pressures in the CH₄-H₂O system with measured raman shifts [J]. Geochimica Et Cosmochimica Acta, 2007, 71(16): 3969-3978

[50] YuZ-c, LiuK-y, ZhaoM-j, LiuS-b, ZhuoQ-g, LuX-song. Characterization of diagenesis and the petroleum charge in kela 2 gas field, kuqa depression, tarim basin [J]. Earth Science, 2016, 41(3): 533-545

[51] BodnarR J. Revised equation and table for determining the freezing point depression of H2O-NaCl solutions [J]. Geochimica Et Cosmochimica Acta, 1993, 57(3): 683-684

[52] FallA, EichhublP, CumellaS P, BodnarR J, LaubachS E, BeckerS P. Testing the basin-centered gas accumulation model using fluid inclusion observations: Southern piceance basin, Colorado [J]. Aapg Bulletin, 2012, 96(12): 2297-2318

[53] JinQ, KangX, TianFei. Genesis of chemical fillings in fractures-caves in paleo-karst runoff zone in Ordovician and their distributions in Tahe oilfield, Tarim Basin [J]. Acta Petrolei Sinica, 2015, 36(7): 791-836

[54] ZhuoQ-g, ZhaoM-j, LiY, WangYuan. Dynamic sealing evolution and hydrocarbon accumulation of evaporate cap rocks: An example from Kuqa foreland basin thrust belt [J]. Acta Petrolei Sinica, 2014, 35(5): 850-854

[55] SunN-f, GuoF-xia. The formation mechanism of gypsiferous salt and its catalytic effect on hydrocarbon generation in Kuqa depression [J]. Offshore Oil, 2015, 35(1): 59-61

[56] McneilB, ShawH F, RankinA H. The timing of cementation in the rotliegend sandstones of the southern North Sea: A petrological and fluid inclusion study of cements [J]. Journal of Petroleum Geology, 1998, 21(3): 311-327

[57] ThomsonJ, CroudaceI W, RothwellR G. A geochemical application of the itrax scanner to a sediment core containing eastern mediterranean sapropel units [J]. Geological Society London Special Publications, 2006, 267(1): 65-77

[58] KerryK, TalbotMLacustrine carbonates as geochemical archives of environmental change and Biotic/Abiotic Interactions [M], 1990288315

[59] BuddD A, LandL S. Geochemical imprint of meteoric diagenesis in holocene ooid sands, schooner cays, bahamas: Correlation of calcite cement geochemistry with extant groundwaters [J]. Journal of Sedimentary Research, 1990, 60(3): 361-378

[60] HanY-j, HeS, SongG-q, WangY-s, HaoX-f, WangB-j, LuoS-yuan. Origin of carbonate cements in the overpressured top seal and adjacent sandstones in Dongying depression [J]. Acta Petrolei Sinica, 2012, 33(3): 388-392

[61] IrwinH, CurtisC. Isotopic evidence for source of diagenetic carbonates formed during burial of organic-rich sediments [J]. Nature, 1977, 269(5625): 209-213

[62] LeiH-y, CaoC, OuW-j, GongC-j, ShiC-xiao. Carbon and oxygen isotope characteristics of foraminiferan from northern south china sea sediments and their significance to late quaternary hydrate decomposition [J]. Journal of Central South University, 2012, 19(6): 1728-1740

[63] LiuS-b, HuangS-j, ShenZ-m, LvZ-x, SongR-cai. Diagenetic fluid evolution and water-rock interaction model of carbonate cements in sandstone: An example from the reservoir sandstone of the fourth member of the Xujiahe formation of the Xiaoquanfenggu area, Sichuan province, China [J]. Science China Earth Sciences, 2014, 57(5): 1077-1092

[64] FRIEDMAN I, O’NEIL J R. Compilation of stable isotope fractionation factors of geochemical interest [M]// M. Fleischer (Editor), Data of Geochemistry. U.S. Geol. Surv. Prof. Pap., 1977, 440-KK: 1–14. DOI: https://doi.org/10.1017/CBO9781107415324.004

[65] LongstaffeF J, CalvoR, AyalonA, DonaldsonS. Stable isotope evidence for multiple fluid regimes during carbonate cementation of the upper tertiary hazeva formation, Dead Sea graben, southern Israel [J]. Journal of Geochemical Exploration, 2003, 80(2): 151-170

[66] NorthropD A, ClaytonR N. Oxygen-isotope fractionations in systems containing dolomite [J]. Journal of Geology, 1966, 74(2): 174-196

[67] LaiJ, WangG-w, ChaiY, XinY, WuQ-k, ZhangX-t, SunY-hui. Deep burial diagenesis and reservoir quality evolution of hightemperature, high-pressure sandstones: Examples from Lower Cretaceous Bashijiqike Formation in Keshen area, Kuqa depression, Tarim basin of China [J]. AAPG Bulletin, 2017, 101(6): 829-862

[68] BjørlykkeK. Relationships between depositional environments, burial history and rock properties. some principal aspects of diagenetic process in sedimentary basins [J]. Sedimentary Geology, 2014, 301(3): 1-14

[69] ZhangR-h, WangJ-p, MaY-j, ChenG, ZengQ-l, ZhouC-guang. The sedimentary microfacies, palaeo-geomorphology and their controls on gas accumulation of deep-buried cretaceous in Kuqa Depression, Tarim Basin, China [J]. Natural Gas Geoscience, 2015, 26(4): 667-678

[70] QiuL-w, HouL-x, WangL-fang. A study on the zoning of hypergenesis of physical properties of clastic reservoir in cheng 110 block [J]. Petroleum Geology and Recovery Efficiency, 2005, 12(5): 16-20

[71] IrwinH. Early diagenetic carbonate precipitation and pore fluid migration in the kimmeridge clay of dorset, england [J]. Sedimentology, 1980, 27(5): 577-591

[72] BuggleB, GlaserB, HambachU, GerasimenkoN, MarkoviS. An evaluation of geochemical weathering indices in loess-paleosol studies [J]. Quaternary International, 2011, 240(1): 12-21

[73] YuanJ, YangX-j, YuanL-r, ChengR-h, ZhuZ-q, LiC-t, DongD-tao. Cementation and its relationship with tectonic fractures of cretaceous Sandstones in DB Gas Field of Kuqa Sub-basin [J]. Acta Sedimentological Sinica, 2015, 33(4): 756-757

[74] SurdamR C, CrosseyL J, HagenE S, HeaslerH P. Organic-inorganic interactions and sandstone diagenesis [J]. Aapg Bulletin, 1989, 73(1): 1-23

[75] MoradSCarbonate cementation in sandstones: Distribution patterns and geochemical evolution [M], 2009, New Jersey, Wiley-Blackwell Press Ltd.

[76] TaylorK G, GawthorpeR L, CurtisC D, MarshallJ D, AwwillerD N. Carbonate cementation in a sequence-stratigraphic framework: Upper cretaceous sandstones, book cliffs, Utah-Colorado [J]. Journal of Sedimentary Research, 2000, 70(2): 360-372

[77] WeiW, ZhuX-m, TanM-x, XueM-g, GuoD-b, SuH, WangP-yu. Diagenetic and porosity evolution of conglomerate sandstones in Bayingebi formation of the lower cretaceous, Chagan Sag, China-Mongolia frontier area [J]. Marine & Petroleum Geology, 2015, 66: 998-1012

[78] BarclayS, WordenR H. Geochemical modelling of diagenetic reactions in a sub-arkosic sandstone [J]. Clay Minerals, 2000, 35(1): 57-68

[79] ZhangL-p, BaiG-p, LuoX-r, MaX-h, ChenM-j, WuM-h, YangW-xiu. Diagenetic history of tight sandstones and gas entrapment in the yulin gas field in the central area of the ordos basin, china [J]. Marine & Petroleum Geology, 2009, 26(6): 974-989

[80] ChenP-y, TanX-c, LiuH, MaT, LuoB, JiangX-f, YuY, JinX-ju. Formation mechanism of reservoir oolitic dolomite in lower triassic feixianguan formation, northeastern Sichuan basin, southwest china [J]. Journal of Central South University, 2014, 21(8): 3263-3274

[81] YuanG-h, CaoY-c, JiaZ-z, GluyasJ, YangTian. Selective dissolution of feldspars in the presence of carbonates: The way to generate secondary pores in buried sandstones by organic CO₂ [J]. Marine & Petroleum Geology, 2015, 60(5): 105-119