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 Xiaoquan-Fenggu area, Sichuan Province, China

Liu, Sibing; Huang, Shenyan; Zhang, Shen; Zheng-xiang, LU; Song, Rongcai

doi:10.1007/s11430-014-4851-2

Cited by 60 publications

(24 citation statements)

References 11 publications

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“…These controls include latitude, elevation, temperature, the vegetation type and its seasonal activity, isotopic composition of the rainfall, the degree of evaporation, the distance to the sea, monsoonal influences and the degree of contamination by pre-existing carbonate in the soil (e.g. (Cerling, 1984;Liu et al, 2014;Purvis and Wright, 1991;Salomons and Mook, 1986;Smith and Epstein, 1971). Because of these extremely diverse factors, a precise interpretation of the isotopic data is difficult to achieve.…”

Section: Origin Of Carbonate Cementsmentioning

confidence: 99%

The role played by carbonate cementation in controlling reservoir quality of the Triassic Skagerrak Formation, Norway

Cui

Jones

Saville

et al. 2017

Marine and Petroleum Geology

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Section: Origin Of Carbonate Cementsmentioning

confidence: 99%

The role played by carbonate cementation in controlling reservoir quality of the Triassic Skagerrak Formation, Norway

Cui

Jones

Saville

et al. 2017

Marine and Petroleum Geology

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“…Exploration in the western Sichuan Basin since 1990 has resulted in gas discoveries within the Xujiahe Formation at the Zhongba, Fenggu and Xingchang Gas Fields. Significant gas exploration breakthroughs (Bian et al., 2015; Lai et al., 2015), together with major contributions on the structural geology, sequence stratigraphy, sedimentary environment, reservoir quality and diagenesis of the Xujiahe Formation in the western Sichuan Basin (Li et al., 2014; Lin et al., 2006; Liu et al., 2014; Sun et al., 2014; Tan et al., 2013; Wang et al., 2015), have resulted in the recent focus on Xujiahe targets in other areas of the Basin (Lin et al., 2015; Wang et al., 2013; Zhang et al., 2016).…”

Section: Introductionmentioning

confidence: 99%

Diagenesis and reservoir characteristics analysis of the Late Triassic Xujiahe Formation tight gas sandstone in the northern Sichuan Basin, China

Lin

Zhai

et al. 2017

Energy Exploration & Exploitation

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The Late Triassic Xujiahe Formation is a key target for tight gas in the northern Sichuan Basin. Thin section, scanning electron microscopy, X-ray diffraction, porosity and permeability analyses have been performed to delineate the diagenesis and reservoir characteristics of Xujiahe sandstone. The results show that the Xujiahe Formation contains feldspathic litharenite, litharenite, sublitharenite and quartzarenite sandstone. Sandstones of the Xujiahe Formation are characterized by low feldspar content and both secondary and micro-fracture porosity. Porosity and permeability analyses of 185 core samples show a broad but low porosity range from 0.79 to 10.43% (average 4.55%) and wide but low permeability range (0.0021-26.001 mD, average 0.449 mD). The higher permeabilities result from micro-fracturing. Strong mechanical compaction plays a more important role in reducing primary porosity of sandstone than cementation during eodiagenesis. Carbonate cement is detrimental to reservoir porosity. Early carbonate cement precipitated from depositional water during eodiagenesis can block primary pores while late carbonate cement formed during mesodiagenesis can fill secondary pores. Quartz cement shows a slight relationship with porosity and permeability. There is a positive relationship between grain-coating chlorite and porosity and permeability. The effect of diagenesis on the reservoir quality of Xujiahe tight gas sandstone is greater that depositional environment during deep burial.

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“…It is challenging to quantify the influence of concretionary carbonate cements on fluid flow in reservoirs because it is difficult to determine the distribution of diagenetic heterogeneity based on subsurface data. If the carbonate cements formed during early diagenetic stage, it could provide a framework that resists burial compaction and retains primary porosity until decarbonatization at greater burial depth [1][2][3]. Microlitic carbonate cements formed at early diagenetic stage can undertake partial overburden load that can slow compaction and can be dissolved into secondary pores under favorable geologic conditions.…”

Section: Introductionmentioning

confidence: 99%

The Distribution and Origin of Carbonate Cements in Deep-Buried Sandstones in the Central Junggar Basin, Northwest China

Wang

Hou

et al. 2017

Geofluids

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Extremely high porosities and permeabilities are commonly discovered in the sandstones of the Xishanyao Formation in the central Junggar Basin with the burial depth greater than 5500 m, from which hydrocarbons are currently being produced. High content of carbonate cements (up to 20%) is also observed in a similar depth range. Our study aimed to improve our understanding on the origin of carbonate cements in the Xishanyao Formation, in order to provide insights into the existence of high porosity sandstones at greater depths. Integrated analyses including petrographic analysis, isotopic analysis, fluid-inclusion, and core analysis were applied to investigate the distribution and origin of carbonate cements and the influence of high fluid pressure on reservoir quality. Textural evidences demonstrate that there are two generations of carbonate cements, precipitated at the temperature of 90 ∘ C and 120 ∘ C, respectively. The carbonate cements with low 13 C PDB ranging from −19.07 to −8.95‰ dominantly occurred near the overpressure surface and especially accumulated at approximately 100 m below the surface. Our interpretation is that high content of carbonate cements is significantly influenced by early carbonate cements dissolution and migration under overpressure. Dissolution of plagioclase resulted in the development of internal pores and porosities of as much as 10% at 6500 m depth presumably.

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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 Xiaoquan-Fenggu area, Sichuan Province, China

Cited by 60 publications

References 11 publications

The role played by carbonate cementation in controlling reservoir quality of the Triassic Skagerrak Formation, Norway

The role played by carbonate cementation in controlling reservoir quality of the Triassic Skagerrak Formation, Norway

Diagenesis and reservoir characteristics analysis of the Late Triassic Xujiahe Formation tight gas sandstone in the northern Sichuan Basin, China

The Distribution and Origin of Carbonate Cements in Deep-Buried Sandstones in the Central Junggar Basin, Northwest China

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