Petrological and geochemical constraints on diagenesis and deep burial dissolution of the Ordovician carbonate reservoirs in the Tazhong area, Tarim Basin, NW China

Jia, Lina; Cai, Chunfang; Jiang, Lei; Zhang, Ke; Li, Hongxia; Wen, Zhang

doi:10.1016/j.marpetgeo.2016.09.031

Cited by 39 publications

(18 citation statements)

References 54 publications

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“…These observations suggest intense fluid activity which had a dominant influence on the precipitation of calcite during the carbonate diagenesis (cementation) in the fault damage zones. This is consistent with the documented extensive, hydrothermal activity during the Permian throughout the Tarim Basin [48,49]. Almost all of the porosity in the first and second fractures has been occluded by strong precipitation of calcite cements during deep burial environment ( Figures 6 and 7).…”

Section: Paragenetic Sequence Of the Structure Related Diagenesissupporting

confidence: 86%

“…Together with the macro-and micro-structures observed in the Halahatang area Ordovician carbonates [28,40,[48][49][50], there are multiple features that evidence the complicated structural control upon diagenesis rather than that which typifies the relatively uniform diagenesis of the carbonate country rocks unaffected by faulting ( Table 1). The fracture elements present and production data [30] have shown the structure-related diagenesis is constrained to within the fault damage zones, or their immediate vicinity, with those rocks productivity controlled by the fault activities.…”

Section: Fault Controls On the Structural Diagenesismentioning

confidence: 99%

“…The fracture elements present and production data [30] have shown the structure-related diagenesis is constrained to within the fault damage zones, or their immediate vicinity, with those rocks productivity controlled by the fault activities. Previous studies have shown that the Ordovician limestones in the Tarim Basin have undergone more than 10 generations of diagenesis in the submarine, eogenetic and mesogenetic environments [28,40,[48][49][50]. In these studies, multiple episodes of fracture activity and/or hydrothermal activity evidenced in the Ordovician carbonates are correlated to fault activities in the Tarim Basin [28,49,51].…”

Section: Fault Controls On the Structural Diagenesismentioning

confidence: 99%

“…In these studies, multiple episodes of fracture activity and/or hydrothermal activity evidenced in the Ordovician carbonates are correlated to fault activities in the Tarim Basin [28,49,51]. Meteoric dissolution and cementation are sparse in the country rocks, although some are possible related to penecontemporaneous diagenesis [48,50] and most can be related to an unconformity [51]. In the Halahatang area, the arenopelitic fillings observed in the fault damage zone samples collected as part of this study suggest a fault related meteoric diagenesis.…”

Section: Fault Controls On the Structural Diagenesismentioning

confidence: 99%

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Structural Diagenesis in Carbonate Rocks as Identified in Fault Damage Zones in the Northern Tarim Basin, NW China

Xie

Zhang

et al. 2019

Minerals

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The identification of structural diagenesis and the reconstruction of diagenetic paragenesis in fault damage zones is important for understanding fault mechanisms and fluid flow in the subsurface. Based on the examination of core and sample thin section data, we deciphered the diagenetic parasequence and their fault controls for Ordovician carbonates in the northern Tarim intracratonic basin in NW China (Halahatang area). In contrast to the uniform nature of diagenesis observed in country rocks, there is a relatively complicated style of compaction and pressure solution, multiple fracturing, and cementation and dissolution history along the carbonate fault damage zones. The relative paragenetic sequence of the structure related diagenesis suggests three cycles of fracture activities, following varied fracture enlargement and dissolution, and progressively weaker calcite cementation. These processes of structure related diagenesis are constrained to the fault damage zones, and their variation is affected by the fault activities. The results of this study suggest that the carbonate reservoir and productivity could be impacted by the structure related diagenesis locally along the fault damage zones.

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Section: Paragenetic Sequence Of the Structure Related Diagenesissupporting

confidence: 86%

Section: Fault Controls On the Structural Diagenesismentioning

confidence: 99%

Section: Fault Controls On the Structural Diagenesismentioning

confidence: 99%

Section: Fault Controls On the Structural Diagenesismentioning

confidence: 99%

See 2 more Smart Citations

Structural Diagenesis in Carbonate Rocks as Identified in Fault Damage Zones in the Northern Tarim Basin, NW China

Xie

Zhang

et al. 2019

Minerals

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“…Carbonate reservoirs are of great importance for hydrocarbon exploration and exploitation, from which more than 50% of oil and gas are produced globally (Jia et al, 2016). However, carbonate reservoirs are in most cases inherently heterogeneous (e.g., Heasley, Worden, & Hendry, 2000;Hollis et al, 2010;Makhloufi et al, 2013;Matonti et al, 2015;Wang & Al-Aasm, 2002).…”

Section: Introductionmentioning

confidence: 99%

Seepage reflux dolomitization and telogenetic karstification in Majiagou Formation in the Ordos Basin, China

et al. 2018

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This study investigates the characteristics of the heterogeneous carbonate reservoir of Majiagou Formation in Jingxi area, Ordos Basin, China, to explain the diagenetic control and distribution of high‐quality reservoir intervals. The carbonates of the study area mainly consist of silt‐sized crystalline dolomite, microcrystalline dolomite, and microcrystalline limey dolomite. Both dolomite content and dolomite size gradually decrease both from top to bottom and from slope to basin. Intercrystalline pores exist in the silt‐sized crystalline dolomite, and vuggy pores and fractures mainly developed in microcrystalline (limey) dolomite. Furthermore, typical geopetal infills and three stages of calcite cements could be differentiated. Based on petrographical and geochemical analysis, the reservoir is dominantly controlled by seepage reflux dolomitization and telogenetic karstification. Four reservoir evolutions could be differentiated. The reservoir in the first model is dominated by intercrystal porosity occurring in silt‐sized crystalline dolostone. It experienced strong dolomitization, telogenetic karstification, and shallow as well as deep burial cementation. The reservoir in the second model consists of only a small amount of high‐angle dissolution fissures and vertical dissolution cavities in microcrystalline (limey) dolostone. It experienced relatively weak dolomitization, strong telogenetic karstification, and two important calcite cementation events. The reservoir in the third model is marked by many vuggy pores and dissolution fractures, occurring in microcrystalline (limey) dolostone. The strata experienced relatively weak dolomitization, strong telogenetic karstification, and two weak calcite cementation episodes. The reservoir in the fourth model is dominated by fractures and their related dissolution pores, which developed in microcrystalline (limey) dolostone. These dolostones experienced relatively weak dolomitization, telogenetic karstification, and calcite cementation. From a reservoir point of view, the reservoirs represented by the first and third models, which respectively are composed of silt‐sized crystalline dolomite occurring in the top of the whole dolostone succession and the dolomite affected by telogenetic karstification, are the most vital exploration targets.

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Facies analysis and depositional evolution of Lower–Middle Ordovician carbonates in the Shuntuoguole Low Uplift of Tarim Basin (NW China)

Han,

Chen,

Cao

et al. 2023

Facies

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Petrological and geochemical constraints on diagenesis and deep burial dissolution of the Ordovician carbonate reservoirs in the Tazhong area, Tarim Basin, NW China

Cited by 39 publications

References 54 publications

Structural Diagenesis in Carbonate Rocks as Identified in Fault Damage Zones in the Northern Tarim Basin, NW China

Structural Diagenesis in Carbonate Rocks as Identified in Fault Damage Zones in the Northern Tarim Basin, NW China

Seepage reflux dolomitization and telogenetic karstification in Majiagou Formation in the Ordos Basin, China

Facies analysis and depositional evolution of Lower–Middle Ordovician carbonates in the Shuntuoguole Low Uplift of Tarim Basin (NW China)

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