Reservoir characteristics and control factors of Carboniferous volcanic gas reservoirs in the Dixi area of Junggar Basin, China

Shi, Jianrong; Sun, Guoqiang; Zhang, Shuncun; Guo, Hui; Zhang, Shengyin; Du, Shanshan

doi:10.1016/j.jnggs.2017.03.001

Cited by 10 publications

(6 citation statements)

References 4 publications

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“…1). It is assumed to have been formed during the rifting in the Early Oligocene based on the main source rocks being Oligocene lacustrine mudstones [17,18].…”

Section: Materials and Methods Materialsmentioning

confidence: 99%

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Bach Ho Field Geological Features Identification Using Well Logging Data

Nguyen¹,

Pham²,

Hoang³

et al. 2023

IZVESTIYA

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Link for citation: Nguyen Xuan Kha, Pham Xuan Son, Hoang Van Quy, Nguyen Tuan, Truong Quoc Thanh, Mai Huu Xuan, Tran Van Xuan. Bach ho field geological features identification using well logging data. Bulletin of the Tomsk Polytechnic University. Geo Аssets Engineering, 2023, vol. 334, no. 7, рр. 35-42. In Rus. The relevance. Well geophysics is considered as a typical method that can assist in determining the petrophysics properties of reservoirs and further location of the petroleum product-containing reservoirs. For reservoirs formed from fractured basement rock, studies on the petrophysics properties of fracture zones can contribute to the identification of petroleum products. The main aim. The study applied the cross-plotting method based on raw well-logging data to identify the possible correlation between the gamma-ray logging with well-logging including neutron porosity, sonic transient time, and bulk density in three wells (BH-433, BH-809, and BH-905) of Bach Ho field in the Cuu Long Basin, Vietnam. Methods. To deploy this study, well-logging data were integrated into formation of micro images and neutro, speed of sound, and density of the basement at the surveyed reservoir positions. Results. The results indicated that granite in the investigated zones responds to the two tight value ranges (no-oil exist zones) neutro (0,000–0,100) and speed of sound (46–64), and neutro (0,000–0,100) and density (2,375–2,750) while the value ranges deviate from 0,000–0,100, 46–64, and 2,375–2,750, respectively for neutro, speed of sound, and density are closely related to the good permeability and porosity zones (oil exist zones). Based on the findings, it can be confirmed that the cross-plotting analysis has contributed positively to the initial assessment of potential ranges of the oil reservoirs in Bach Ho field. The application of the cross-plotting method will contribute to enhancing the predictability of oil and gas in the reservoirs.

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“…1). It is assumed to have been formed during the rifting in the Early Oligocene based on the main source rocks being Oligocene lacustrine mudstones [17,18].…”

Section: Materials and Methods Materialsmentioning

confidence: 99%

“…Fracture zones in the basement are commonly formed along the vertical direction with the porosity of the basement stone around 1,0-5,0 % [11,14]. The major petroleum bodies in the basin consist of the tertiary granitefractured basement on tilted fault blocks [14,18].…”

Section: Materials and Methods Materialsmentioning

confidence: 99%

Bach Ho Field Geological Features Identification Using Well Logging Data

Nguyen¹,

Pham²,

Hoang³

et al. 2023

IZVESTIYA

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“…The Junggar Basin, located in northern Xinjiang, China (Figure 1A) (He et al, 2004a), is an important part of the Central Asian Orogenic Belt (Shi et al, 2017;Pei et al, 2018;Zhang et al, 2020). It is located at the junction of Kazakhstan, Siberian, and Tarim Blocks (Figure 1B) (He et al, 2018).…”

Section: Geological Settingmentioning

confidence: 99%

Stratigraphic Characteristics and Sediment-Filling Process of the Early Permian Fengcheng Formation in the Northwestern Margin of the Junggar Basin, Northwest China

et al. 2022

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The Permian Fengcheng Formation in the Mahu sag of the Junggar Basin is a crude oil reservoir and source rock. However, its stratigraphic characteristics, the boundary marks of the three members (lower, middle, and upper), and the sediment-filling processes are unclear. This study presents the sedimentary systems and sediment-filling processes in an intracontinental rift basin of this area using sedimentary-faces analysis, sequence stratigraphy, well logs, and two-dimensional seismic interpretations. The results show that the Fengcheng Formation consists of three third-order sequence stratigraphy (SQf1, SQf2, and SQf3). The lowest member of the Fengcheng Formation is composed of gray to dark gray thin middle layers of tuff, lacustrine dolomitic mudstone, and argillaceous dolomite near the depocenter. Tuff, siltstone, a small amount of fan–delta glutenite, volcanic breccia, and basalt are present near the fault zone. The logging curve is characterized by a high gamma-ray (GR) value, high amplitude, wavelength growth, and medium frequency. Near the depocenter, the middle member of the Fengcheng Formation comprises gray and gray–black thin layers of lacustrine muddy dolomite and dolomitic mudstone and thin sandstone and mudstone interbedded between tuff and gravel near the orogenic belt. The logging curve displays high-to-low GR values, high amplitude, short wavelength, and high frequency. The upper member of the Fengcheng Formation is not characterized by lesser tuffaceous and dolomitic components but by an increased fan–delta sandy content. Next, the bottom of the upper member is composed of lacustrine mudstone and siltstone interbedded between dolomitic mudstones; whereas, the top of the upper member is dominated by fan–delta coarse sandstone and sandy conglomerate. The logging curve shows low GR values, small amplitude, and continuous stability. The sediment-filling process of the Fengcheng Formation is controlled by fault activity. Overall, the lower and middle members of the Fengcheng Formation expand during the sediment-filling process of the lake basin of the Mahu sag; whereas, the upper member contracts. The strong uplift of the Horst near the Baiquan and Mahu orogenic belts led to an increase in provenance supply, resulting in a contraction of the southwestern margin of the lake basin during the sedimentation period from lower member to upper member of Fengcheng Formation.

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“…In many locations, such as Argentina (Sruoga et al, 2004;Sruoga and Rubinstein, 2007), Indonesia (Sembodo, 1973;Nayoan, 1981), Japan (Sakata, 1997;Magara, 2003), Russia (Levin, 1995), Venezuela (Landes et al, 1960) and China, hydrocarbon production from volcanic rock reservoirs is already in place. The most important basins for hydrocarbon production from volcanic reservoirs in China are the Junggar, Songliao, and Bohai Bay basins (e.g., Chen et al, 2016a;Qiu et al, 2016;Tang et al, 2016;Wei et al, 2017;Shi et al, 2017;Chen et al, 2017;Jiang et al, 2017;Luo et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

“…Due to its vast oil, natural gas, and coal resources, the Junggar Basin of western China, especially in recent years, has attained an immense economic significance (Tang et al, 1997;Chen et al, 2016a;Qiu et al, 2016;Shi et al, 2017;Chen et al, 2017). The Chunfeng Oilfield (CF Oilfield), located in the Chepaizi uplift at the northwestern personal communication).…”

Section: Introductionmentioning

confidence: 99%

Characteristics, controls and geological models of hydrocarbon accumulation in the Carboniferous volcanic reservoirs of the Chunfeng Oilfield, Junggar Basin, northwestern China

Yong

Yang

Song

et al. 2018

Marine and Petroleum Geology

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The Junggar Basin is one of the most important basins for hydrocarbon production in China. Within the basin, the Chunfeng Oilfield forms one of the most important oilfields of the area. Despite the significant work that has been done on the rocks of the oilfield so far, a detailed reservoir characterization and description of the hydrocarbon accumulation pattern was still missing. Therefore, an investigation had been initiated to fill this gap in our understanding of the hydrocarbon reservoirs of the 2 ACCEPTED MANUSCRIPT Junggar Basin. The results of this study show that the tuff and andesitic lava lithofacies exhibit the highest reservoir potential in the area. Apart from the lithofacies, the results of this study show that tectonic (formation of fault systems) and diagenetic (formation of solution pores) effects, and the development of a weathering crust are crucial factors that control the quality of the petroleum reservoirs of the oilfield. In addition, two possible geological models of petroleum accumulation in isolated volcanic rocks and sandstone (IVRS) and connected volcanic rocks and sandstone (CVRS) are presented.

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Reservoir characteristics and control factors of Carboniferous volcanic gas reservoirs in the Dixi area of Junggar Basin, China

Cited by 10 publications

References 4 publications

Bach Ho Field Geological Features Identification Using Well Logging Data

Bach Ho Field Geological Features Identification Using Well Logging Data

Stratigraphic Characteristics and Sediment-Filling Process of the Early Permian Fengcheng Formation in the Northwestern Margin of the Junggar Basin, Northwest China

Characteristics, controls and geological models of hydrocarbon accumulation in the Carboniferous volcanic reservoirs of the Chunfeng Oilfield, Junggar Basin, northwestern China

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