Depositional regimes and reservoir architecture characterization of alluvial fans of Karamay oilfield in Junggar basin, Western China

Li, Shunming; He, Hui; Hao, Ruilin; Chen, Huanqing; Bie, Han-yu; Liu, Pengcheng

doi:10.1016/j.petrol.2019.106730

Cited by 10 publications

(4 citation statements)

References 47 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…in the western part of the Junggar Basin [19,20] (Figure 1a). The geomorphological features of the study area are relatively homogeneous, mostly broad and flat desert with elevations ranging from 270 m to 500 m [21].…”

Section: Study Area Descriptionmentioning

confidence: 99%

“…Karamay City belongs to Xinjiang Province (Figure 1b) and is located in northwe China (84°44′-86°1′ E, 44°7′-46°8′ N) in the western part of the Junggar Basin [19,20] (F 1a). The geomorphological features of the study area are relatively homogeneous, m broad and flat desert with elevations ranging from 270 m to 500 m [21].…”

Section: Study Area Descriptionmentioning

confidence: 99%

See 1 more Smart Citation

Calculation of Visual Background Values of Major Groundwater Components Taking Karamay City as an Example

Zheng,

Ren,

Liu

et al. 2024

Sustainability

View full text Add to dashboard Cite

Based on the groundwater chemistry data from Karamay City, Xinjiang Province, this study examines seven major components: K+, Ca2+, Na+, Mg2+, SO42−, Cl−, and HCO3−. The sampling was conducted during two periods: flood and dry periods. On the basis of analyzing the regional geologic background and hydrogeologic conditions, the study area was divided into calculation units and the test data validity was screened. Then, the outliers were eliminated by Grubbs’ method and Piper’s trilinear plot method, and the effectiveness of the elimination was evaluated by the box-and-line diagram. After that, the distribution types of the groundwater chemistry data in each calculation unit were judged to obtain the background values of the seven test indexes for the groundwater in different calculation units. The results show that Grubbs’ method and Piper’s trilinear plot method are effective in removing outliers. Secondly, the background values of Na+ and Cl− in the groundwater of Karamay City are mostly higher than those of other anions and cations during the two sampling periods. This phenomenon may be due to the concentration effect of evaporation. Additionally, the groundwater background values of Ca2+, Na+, and Cl− showed more significant differences between the two sampling periods compared to other ions.

show abstract

Section: Study Area Descriptionmentioning

confidence: 99%

Section: Study Area Descriptionmentioning

confidence: 99%

Calculation of Visual Background Values of Major Groundwater Components Taking Karamay City as an Example

Zheng,

Ren,

Liu

et al. 2024

Sustainability

View full text Add to dashboard Cite

show abstract

“…The lack of internal sedimentary structure in these poorly sorted sandstones suggest an abrupt deceleration and quick deposition of sediment with insufficient time to create bedforms [64,70]. This lithofacies commonly occurs within middle alluvial fans proximal to the mountain front, where the flow becomes unconfined, dewaters, and rapidly settles [71].…”

Section: Lithofacies Mss: Massive Sandstonesmentioning

confidence: 99%

Sedimentology, Provenance and Radiometric Dating of the Silante Formation: Implications for the Cenozoic Evolution of the Western Andes of Ecuador

et al. 2020

View full text Add to dashboard Cite

The Silante Formation is a thick series of continental deposits, exposed along a trench-parallel distance of approximately 300 km within the Western Cordillera of Ecuador. The origin, tectonic setting, age and stratigraphic relationships are poorly known, although these are key to understand the Cenozoic evolution of the Ecuadorian Andes. We present new sedimentological, stratigraphic, petrographic, radiometric and provenance data from the Silante Formation and underlying rocks. The detailed stratigraphic analysis shows that the Silante Formation unconformably overlies Paleocene submarine fan deposits of the Pilalo Formation, which was coeval with submarine tholeiitic volcanism. The lithofacies of the Silante Formation suggest that the sediments were deposited in a debris flow dominated alluvial fan. Provenance analysis including heavy mineral assemblages and detrital zircon U-Pb ages indicate that sediments of the Silante Formation were derived from the erosion of a continental, calc-alkaline volcanic arc, pointing to the Oligocene to Miocene San Juan de Lachas volcanic arc. Thermochronological data and regional correlations suggest that deposition of the Silante Formation was coeval with regional rock and surface uplift of the Andean margin that deposited alluvial fans in intermontane and back-arc domains.

show abstract

“…Based on a detailed description of the sedimentary characteristics and superimposed relationships of the bottom bar and marginal bar, Wang further identified four types of channel sand body [30]. Li summarized the depositional patterns of reservoir architecture for different alluvial fan subfacies and concluded that it is important to clarify the structural elements of the alluvial fan for the accurate prediction of the remaining oil distribution [31]. Ovie's research indicated that continental sedimentary reservoirs have poor lateral and vertical sand body connectivity, implying poor oil sweep efficiency and fluid injection potential [32].…”

Section: Introductionmentioning

confidence: 99%

Remaining Oil Distribution Law and Development Potential Analysis after Polymer Flooding Based on Reservoir Architecture in Daqing Oilfield, China

Bai

Guo

et al. 2023

Polymers

View full text Add to dashboard Cite

Polymer flooding has drawn more and more attention in the world for its high incremental oil recovery factor and relative low costs compared with water flooding and other chemically enhanced oil recovery techniques. However, for many oilfields, such as Daqing Oilfield, China, that have already been flooded with polymers, how to further improve recovery remains a big problem. Traditional intralayer, interlayer and plane heterogeneity studies cannot accurately characterize the remaining oil distribution after polymer flooding. To solve this problem, we established a method to quantitatively describe the reservoir’s architecture. Then, the architecture elements were dissected hierarchically and the interface of each architecture level in Daqing Oilfield was identified. The distribution pattern and development potential of the remaining oil after polymer flooding under the influence of reservoir architecture was analyzed. The results show that, regarding the sedimentary process from north to south in Daqing Oilfield, the channel becomes narrower, the thickness decreases, the point bar’s width increases and the thickness of the meandering river decreases. The braided bar scale becomes larger and the thickness becomes smaller in the braided river. According to the reservoir’s architecture, the remaining oil was divided into four categories of plane remaining oil (abandoned channel occlusion type, interfluvial sand body occlusion type, inter-well retention type and well pattern uncontrollable type) and three types of vertical remaining oil (in-layer interlayer occlusion type, rhythm type and gravity type). About 40% of the original oil in place (OOIP) of Daqing Oilfield has not yet been produced, which indicates that there is great potential for development. This study is important for improving oil recovery in polymer-flooded reservoirs.

show abstract

Depositional regimes and reservoir architecture characterization of alluvial fans of Karamay oilfield in Junggar basin, Western China

Cited by 10 publications

References 47 publications

Calculation of Visual Background Values of Major Groundwater Components Taking Karamay City as an Example

Calculation of Visual Background Values of Major Groundwater Components Taking Karamay City as an Example

Sedimentology, Provenance and Radiometric Dating of the Silante Formation: Implications for the Cenozoic Evolution of the Western Andes of Ecuador

Remaining Oil Distribution Law and Development Potential Analysis after Polymer Flooding Based on Reservoir Architecture in Daqing Oilfield, China

Contact Info

Product

Resources

About