The characteristics of the neotectonic movement and their effects on the formation of gas reservoirs in the marginal depressions of Tarim basin, NW China

Jiang, Zhenglong; Huang, Shilin; Du, Hailing; Li, Yajun; Wang, Buqing; Cao, Yuanting; Zhang, Yunfei

doi:10.1016/j.jngse.2014.12.028

Cited by 10 publications

(6 citation statements)

References 8 publications

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“…The total simulation time was set to 30 Ma, including compaction (30 to 25 Ma), early and shallow burial diagenesis (25 to 20 Ma), organic acid incursion I (20 to 16 Ma), elevated temperature and pressure (16 to 13 Ma), organic acid incursion II (13 to 9 Ma) and the late and deep burial diagenesis (9 Ma to present). These diagenetic events and stages were recognized based on a number of previous studies (Zhao et al ., ; Liang et al ., ; Zeng, ; Liu et al ., ; Lu et al ., ; Ni et al ., ; Tang et al ., ; Jiang et al ., ). The change in porosity and the diagenetic sequence over the simulated geological timescale are shown in Fig.…”

Section: Discussionmentioning

confidence: 97%

“…The whole diagenetic process of a reservoir could be divided into several successive stages according to palaeo‐temperature, presence of characteristic minerals and other indicators, each of which has its own diagenetic characteristics (Jia & Li, ; Tobin et al ., ; Zhang et al ., ; Jiang et al ., ). Because reservoirs experience various fluid–rock interactions during their diagenetic history, it is of great importance to investigate the specific geochemistry reactions and processes controlling the porosity evolution at each stage.…”

Section: Introductionmentioning

confidence: 97%

“…The Tarim Basin, one of the largest petroliferous basins in China, is located between the Tianshan and Kunlun mountains in western China (Fig. A) (Liang et al ., ; Ni et al ., ; Jiang et al ., ; Lai et al ., ). The Kuche Depression (also known as the ‘Kuqa Depression’), a Mesozoic and Cenozoic foreland depression, was overlapped on a Palaeozoic passive continental margin of the Tarim Basin (Fig.…”

Section: Introductionmentioning

confidence: 99%

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Fluid–rock interactions during continuous diagenesis of sandstone reservoirs and their effects on reservoir porosity

Yang

Liu

et al. 2017

Sedimentology

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The Cretaceous sandstone reservoir in the Kuche Depression, Tarim Basin, western China, was investigated with reference to its reservoir property evolution during diagenesis. Six general diagenetic stages were recognized through petrographic, mineralogical and geochemical analyses. Fluid–rock interaction experiments were conducted under these six continuous diagenetic conditions, that is with a simulation sequence of compaction → early diagenesis → organic acid incursion I → elevated temperature/pressure → organic acid incursion II → late diagenesis. Corresponding to these six experimental stages, a total of six models were constructed. Finally, an extended model of fluid–rock interaction during diagenesis at a geological timescale (from 30 Ma to present) was constructed after various parameters had been validated. Results demonstrate that the diagenetic stages from both the experimental and numerical simulations generally matched findings obtained from the petrographic and geochemical analyses: (i) With compaction becoming weakened, cementation by various minerals was gradually increased. (ii) Quartz overgrowth occurred because the contemporaneous sedimentary water was alkaline. (iii) Most minerals (for example, calcite and feldspar minerals) displayed dissolution owing to the first organic acid incursion, resulting in the visual porosity increasing to 29·26%. (iv) Increases in temperature and pressure caused a minor fluctuation of the porosity change. (v) The cement that formed during earlier stages largely dissolved with the second organic acid incursion. (vi) During the last stage, the reservoir fluid was diluted by sedimentary alkaline water and most minerals precipitated under an alkalic environment. The present porosity simulated is about 11·4%, comparable with the actually measured data. This study demonstrates that the combination of petrographic observations, laboratory experiments and numerical simulations can not only reconstruct the diagenetic process, but also provide a quantitative evaluation and prediction of reservoir petrophysical properties.

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Section: Discussionmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

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Fluid–rock interactions during continuous diagenesis of sandstone reservoirs and their effects on reservoir porosity

Yang

Liu

et al. 2017

Sedimentology

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“…O tym, jak istotne znaczenie może mieć paleokras dla złóż węglowodorów, może świadczyć przykład Chin, gdzie odkryto wiele złóż ropy naftowej i gazu właśnie w paleokrasie (Zhang i Liu, 2009;Lin et al, 2012;Sun et al, 2013;Jiang et al, 2015;Dai et al, 2017;Tian et al, 2017;Gao et al, 2018). Na przykład w basenie Tarim, położonym w NW Chinach, zasoby ropy i gazu występujące w strukturach krasowych oceniane są na 113,55 × 10 8 t ropy naftowej i 13,183 × 10 12 m 3 gazu.…”

Section: Wstępunclassified

Paleokras w utworach górnej jury podłoża zapadliska przedkarpackiego i jego znaczenie złożowe

Miziołek¹,

Filar²

2019

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“…During the Paleozoic, the basin formed a cratonic massif that evolved into a foreland basin from the Mesozoic to the Cenozoic eras (Li et al, 1996;Wang et al, 2016). Tectonic movements led to the formation of several units characterized by unconformities (Jia & Wei, 2002;Jiang et al, 2015;Liu, Somerville, Lin, & Zuo, 2016;Figure 1b). The Shuntuoguole Uplift that constitutes one of the tectonic units is located at the center of the Tarim Basin and formed an uplifted segment between two low-lying regions: the Manjiaer Depression and Awati Depression (Figure 1b, Song et al, 2013;Lan, Lü, Zhu, & Yu, 2015).…”

Section: Regional Geologymentioning

confidence: 99%

Natural gas characteristics, fluid evolution, and gas charging time of the Ordovician reservoirs in the Shuntuoguole region, Tarim Basin, NW China

Wang

et al. 2017

Geological Journal

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The Shuntuoguole region is situated at the center of the Tarim Basin, in NW China. It is bordered by the Tazhong Uplift to the west and the Manjiaer Depression to the east. Data obtained on samples collected from exploration wells highlight the large potential for gas discoveries in this region. Component and stable carbon isotopic analyses have been performed on gas samples from 5 wells in the Shuntuoguole region. The dryness coefficients of gas samples vary from 0.95 to 1.00, indicating that the gas samples belong to overmatured dry gas. The carbon isotopic values (δ13C) of all gas samples are heavier than −40‰, compared to the typical gas samples with different sources in the Tarim Basin, revealing that the gas in the Shuntuoguole region originated from source rocks in the Cambrian. The SN‐1 exploitation well was selected to undertake fluid inclusion studies revealing the mechanisms of natural gas charging and fluid evolution. Data from the SN‐1 well drill core indicate a 1,700‐ to 7,050‐m‐thick sedimentary sequence containing Ordovician to Tertiary strata. The Middle Ordovician Yijianfang Formation (Fm) constitutes one of the most important gas reservoirs. The Yijianfang Fm consists principally of limestone containing widely distributed sparry calcite. Numerous fluid inclusions are observed in calcite, and 4 types of fluid inclusions are recognized based on the observed phases and components. These are pure CH4 (P‐type), CH4‐bearing (C‐type), aqueous (W‐type), and solid‐bearing (S‐type) inclusions. The trapping temperatures and pressures, determined through the intersection of isochores from coeval fluid inclusions, reach 183 °C to 216 °C and 1,914 bars to 2,196 bars, respectively. When taking into account the regional burial history, we find the natural gas charged during the Neogene interval, from 20 Ma to 3 Ma.

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The characteristics of the neotectonic movement and their effects on the formation of gas reservoirs in the marginal depressions of Tarim basin, NW China

Cited by 10 publications

References 8 publications

Fluid–rock interactions during continuous diagenesis of sandstone reservoirs and their effects on reservoir porosity

Fluid–rock interactions during continuous diagenesis of sandstone reservoirs and their effects on reservoir porosity

Paleokras w utworach górnej jury podłoża zapadliska przedkarpackiego i jego znaczenie złożowe

Natural gas characteristics, fluid evolution, and gas charging time of the Ordovician reservoirs in the Shuntuoguole region, Tarim Basin, NW China

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