Huoshiling Formation Volcanic Reservoir Control Factors Analysis of Wangfu Fault Depression in Southern Songliao Basin

2013 ◽  
Vol 868 ◽  
pp. 101-106 ◽  
Author(s):  
Xu Yan ◽  
Hai Tao Xue
Keyword(s):  
Volcanic Rock ◽  
Volcanic Rocks ◽  
Sedimentary Facies ◽  
Songliao Basin ◽  
Large Reservoir ◽  
Control Factors ◽  
Factors Analysis ◽  
Volcanic Reservoir ◽  
Volcanic Breccia ◽  
Gas Potential

Wangfu fault depression Huoshiling Formation in southern Songliao Basin volcanic rocks with larger gas potential, but the volcanic reservoir control factors is not clear, the author take Well Wangfu 1 for example, explore the Huoshiling Formation of volcanic rock reservoir control factors. Well Wangfu 1 main lithology is andesite, volcanic breccia and tuff;on the lithofacies is given priority to with the overflow facies, followed by eruption facies, a small amount of volcanic sedimentary facies; denudation, devitrify and tectonism have the significance on improving reserving space; gaps in the tuff to improve large reservoir, it is more obvious that andesite and volcanic breccia improving permeability; volcanic breccia of Well Wangfu 1 is the relatively favorable reservoir space.

scholarly journals Reservoir characteristics in the Cretaceous volcanic rocks of Songliao Basin, China: A case of dynamics and evolution of the volcano-porosity and diagenesis

2018 ◽  
Vol 37 (2) ◽  
pp. 607-625 ◽  
Author(s):  
Haitao Sun ◽  
Dakang Zhong ◽  
Weijia Zhan
Keyword(s):  
Volcanic Rocks ◽  
Songliao Basin ◽  
Pyroclastic Rock ◽  
Rock Composition ◽  
Volcanic Tuff ◽  
Volcanic Breccia ◽  
Pore Evolution ◽  
Diagenetic Evolution ◽  
Pore Types ◽  
Volcanic Reservoirs

To explain the strong spatial heterogeneity of volcanic reservoirs porosity in the Songliao Basin and provide new ideas for predicting good volcanic reservoirs in other similar basins, the relationship between the pore evolution process and lithology of volcanic reservoirs has been described in this article. With the description and interpretation of core, thin section, scanning electron microscope, and the results of mercury injection experiment, this article clarifies the lithology, pore types, and pore structure features of the volcanic reservoirs in the Songliao Basin. The rocks of volcanic reservoirs in study area contain pyroclastic rock and volcanic lavas. The most common lithologies are rhyolite, volcanic breccia, and volcanic tuff. The pore size, morphology, and structure vary greatly between these three lithologies, the reason of which we think is the different volcanic eruption process as well as rock composition and its structure. The digenetic evolution of rhyolite includes gas dissipation of magmatic condensation; vesicles fulfilling by hydrothermal fluid; kaolinization and sericitization of feldspar phenocrysts; carbonation, devitrification, and recrystallization of felsic matrix; and finally, the dissolution of feldspar phenocrysts and felsic matrix. As for volcanic breccia, it usually go through the compaction, quartz and calcite filling the original pores between volcanic breccias, and dissolution of mineral debris together with tuff matrix. Similar with the rhyolite, volcanic tuff also undergoes the carbonation and kaolinization of felsic matrix, the dissolution of feldspar and felsic matrix, and compaction. Due to these comprehensive processes, a comprehensive analysis of volcanic rock lithology, which can indicate lithology distribution vertically and horizontally, is very necessary during volcanic reservoirs evaluation and prediction. These detailed analyses will help explorers to find potential reservoirs by distinguishing the diagenetic evolution and pore characteristic of volcanic reservoirs.

Andesite Geochemistry Features of Late Triassic Tumugou Formation, in Zhongdian, Yunnan Province

2012 ◽  
Vol 524-527 ◽  
pp. 16-23
Author(s):  
Jian Guo Huang ◽  
Run Sheng Han ◽  
Ren Tao ◽  
Zhi Qiang Li
Keyword(s):  
Trace Element ◽  
Volcanic Rock ◽  
Continental Margin ◽  
Active Continental Margin ◽  
Volcanic Rocks ◽  
Distribution Patterns ◽  
Island Arc ◽  
Late Triassic ◽  
Magma Source ◽  
Volcanic Arc

The Late Triassic Tumugou Formation volcanic rocks which belongs to typical island arc volcanic rocks in southern end of Yidun island arc belt is located at the eastern of the Zhongdian ,NW Yunnan, SW China. The volcanic rocks can be divided into three categories:andesitic basalt, andesite, quartz andesite, etc. Through geochemical analysis the major elements, rare earth ele and trace element in volcanic rocks, SiO255.18-57.59×10-2,TiO21.16-1.45×10-2,Na2O+K2O5.11-8.05×10-2.consider it is calc-alkaline- alkaline Series of high-K andesite, volcanic may be controlled by the crystal fractionation of magma.Rb31.50-101×10-6,Ba1310-12300×10-6,Nb/Ta11.4-15.5,REE166.07-240.78×10-6,δEu0.74-1.00,REE distribution patterns show oblique to the HREE side and enrichment in LREE .Eu anomaly is not obvious. It is can see from the relevant figure about trace element, it is very similar in magmatic distribution patterns between volcanic rock and Volcanic-arc rock, indicating that the volcanic in this area may be formed in volcanic-arc environment. From east to west, Magma source depth have regular change with the really thickness of mainland shell. Explain that Tumugou Formation volcanic rock is subduction by Ganzi- Litang Ocean basin from east to west. Hongshan-Ousaila region of eastern edge of Zhongdian is the volcanic island arc system during the passive continental margin into an active continental margin.

Logging Identification Technology of Sedimentary Facies and Gas Layers within Low Pressure, Low Permeability and Low Abundance Gas Reservoirs: Example from SQW Block of the Sulige Gas Field, Ordos Basin, China

2012 ◽  
Vol 616-618 ◽  
pp. 96-99
Author(s):  
Fang Lu ◽  
Xin Jiang Du ◽  
Zhi Jun Mao ◽  
Yan Zhou ◽  
Yue Bin Cui ◽  
...  
Keyword(s):  
Ordos Basin ◽  
Sedimentary Facies ◽  
Low Pressure ◽  
Low Permeability ◽  
Braided River ◽  
Gas Reservoirs ◽  
Gas Field ◽  
Exploration Target ◽  
The Ordos Basin ◽  
Gas Potential

Sulige Gas Field is located in the Suligemiao area, northwest of the Ordos Basin, with a prospecting area of about 4×104km2. Owing to the strong heterogeneity in the SQW Block, one of exploration blocks in the Sulige Gas Field, remains reservoir characteristics of the gas field: lithologic gas reservoirs with characteristics of “three low” (low pressure, low permeability and low abundance). The He8 member of the Shihezi formation, the major exploration target, is deposited in braided river environment. The conventional logging data is very useful to indentify different facies and to estimate gas potential. The technology of discrimination with sedimentary facies and gas layers using logging data is established in this paper. We use the technology combining with AVO and other exploration methods to pick out 4 favorable exploration target areas with the success rate of more than 80%.

Study on Volcanic Facies of Yingcheng Formation in Yaoshen Area

2013 ◽  
Vol 787 ◽  
pp. 661-663
Author(s):  
Cheng Zhi Liu ◽  
Xi Liu ◽  
Xue Du
Keyword(s):  
Seismic Data ◽  
Volcanic Eruption ◽  
Sedimentary Facies ◽  
Clastic Rock ◽  
Volcanic Breccia ◽  
Yingcheng Formation ◽  
Volcanic Lava ◽  
Volcanic Facies ◽  
Volcanic Activities

There are two classification including volcanic lava and volcanic clastic rock, totally 15 types in Yingcheng Formation, Yaoshen area. The lithology is mainly characterized as acid rhyolite, tuffs and volcanic breccia. By using logging data and seismic data, the authors come to the conclusion as follows: there existed five types of lithofacies of volcanic lava in this area, with eruption-overflow facies most widely developed. The section is characterized as eruption mixed with overflow, superposed eruption-overflow facies and volcanic sedimentary facies occurred far from the crater. There are frequent volcanic activities, multi-periodic activities of volcanic eruption developed, thus multi-periodic eruption modes were formed. This area is overlapped and connected in the plane, adjacent eruption facies are often connected, overflow facies are distributed on lave platform.

Large Holocene landslides from Pylon Peak, southwestern British Columbia

2004 ◽  
Vol 41 (2) ◽  
pp. 165-182 ◽  
Author(s):  
Pierre A Friele ◽  
John J Clague
Keyword(s):  
Population Density ◽  
Volcanic Rock ◽  
Debris Flows ◽  
Volcanic Rocks ◽  
Rock Avalanche ◽  
Volcanic Belt ◽  
Preliminary Evidence ◽  
Pyroclastic Rock ◽  
Wet Climate ◽  
Two Phases

Mount Meager massif, the northernmost volcano of the Cascade volcanic belt, has been the site of very large (>107 m3) landslides in the Holocene Epoch. We document two complex landslides at Pylon Peak, one of the peaks of the Mount Meager massif, about 7900 14C and 3900 14C years ago (about 8700 and 4400 calendar years ago). Together, the two landslides displaced ~ 6 × 108 m3 of volcanic rock from the south flank of Pylon Peak into nearby Meager Creek valley. Each landslide consisted of at least two phases, an early debris flow resulting from failure of hydrothermally altered pyroclastic rock at mid levels on the mountain and a later rock avalanche from a higher source. Both debris flows likely traveled down Meager Creek, and preliminary evidence from drilling indicates the 4400-year-old event traveled down Lillooet River into areas that are now settled and where population density is increasing rapidly. The mobility of the debris flows was due to the high content of fine, weathered volcanic sediment and the availability of sufficient water. The causes of the landslides are a wet climate and the presence of weak, hydrothermally altered volcanic rock containing abundant phreatic water on glacially oversteepened slopes. The landslides may have been triggered by earthquakes or by upwelling of magma to shallow depths within the volcano. However, they may also have occurred without specific triggers following extended periods of progressive weakening of the volcanic rocks.

Control Factors of Chang 4+5 Reservoir Properties in Jiyuan Oilfield

2013 ◽  
Vol 734-737 ◽  
pp. 1171-1174
Author(s):  
Qi Zhou ◽  
Yan Yi Yin
Keyword(s):  
Sedimentary Facies ◽  
Low Permeability ◽  
Reservoir Properties ◽  
Delta Front ◽  
Factors Affecting ◽  
Low Permeability Reservoir ◽  
Fine Grained ◽  
Control Factors ◽  
Critical Technology ◽  
Storage Potential

Discovered in recent years, Chang 4+5 reservoir group of Yanchang Formation in Jiyuan area is ultra-low permeability reservoir. The evaluation and prediction of the reservoir is the most critical technology in reservoir development. Comprehensive analysis with multiple research approaches shows that the storage potential of the ultra-low permeability reservoir is jointly controlled by sedimentation and diagenesis. Sedimentary factor includes lithology and sedimentary facies, two basic factors affecting the storage potential. The reservoir lithology is of fine-grained debris-arkose and miliary arkose. Pore types are mainly intergranular pores and dissolved pores. The sandstone microfacies in the delta front underwater distributary channel has the best storage potential. Diagenetic factors, including diagenesis types, evolution, intensity, combination etc., have direct influence on the reservoir storage potential. Compaction and calcite cementation are the main factors that weaken the storage potential, whereas carbonate dissolution, especially the dissolution of feldspar plays an important role in the improvement of the storage potential.

The Investigation between Sedimentary Facies of Middle Cambrian and the Characters of Volcanic Rock, in Wenshan, Yunnan Province

2013 ◽  
Vol 652-654 ◽  
pp. 2560-2565
Author(s):  
Jian Guo Huang ◽  
Run Sheng Han ◽  
Tao Ren ◽  
Zhi Qiang Li
Keyword(s):  
Trace Element ◽  
Volcanic Rock ◽  
Sedimentary Facies ◽  
Distribution Patterns ◽  
Major Elements ◽  
Middle Cambrian ◽  
Ree Distribution ◽  
Tholeiite Series ◽  
Back Arc ◽  
The Eu

The Middle Cambrian Tianpeng Formation volcanic rock, which was found in Baishiyan area in Wenshan recently, is the typical basalt. Through the research of Tianpeng Formation Sedimentary Enviroment and analysis of the geochemistry which includes the major elements, REE and Trace Element in the volcanic rock, SiO2 is 45.78-54.88%, total alkali (alk)=1.22-4.97 and K2O/Na2O=0.03-0.53, we can say that it should be tholeiite series. ∑REE=48.60-157.11ppm,LREE/HREE7.56-9.48,δEu0.40-1.05.REE distribution patterns show oblique to the HREE side and enrichment in LREE , the Eu anomaly is not obvious. We can see from the Trace Element Correlogram that the volcanic in this area is formed from the intiaplate basalt environment. The Tianpeng Formation in this area is clastic rock in a shallow sea and a basin facies and also is the deposit of flysch-simiflyschoid of siliceous and carbonate rock. Also, it deposit with the some undercompensation basin like laminated striation structure. All of those reflect that the structure background of the Middle Cambrian in Wenshan area has strong tensive back-arc spreading.

A Study on Fracture Orientation and Characteristic of Remnant Magnetization of Deep-burial Volcanic Rocks, North of the Songliao Basin

2007 ◽  
Vol 50 (4) ◽  
pp. 1011-1017 ◽  
Author(s):  
Feng-Qi ZHANG ◽  
Ji-Shui SONG ◽  
Zhong-Yue SHEN ◽  
Han-Lin CHEN ◽  
Chuan-Wan DONG ◽  
...  
Keyword(s):  
Volcanic Rocks ◽  
Songliao Basin ◽  
Remnant Magnetization ◽  
Fracture Orientation ◽  
Deep Burial
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