Controls on the quality of Archean metamorphic and Jurassic volcanic reservoir rocks from the Xinglongtai buried hill, western depression of Liaohe basin, China

AAPG Bulletin ◽  
2005 ◽  
Vol 89 (10) ◽  
pp. 1319-1346 ◽  
Author(s):  
Jinglan Luo ◽  
Sadoon Morad ◽  
Zhigang Liang ◽  
Yushuang Zhu
Keyword(s):  
Reservoir Rocks ◽  
Volcanic Reservoir ◽  
Western Depression ◽  
Liaohe Basin ◽  
Buried Hill

Geological structure of J2/1 layer of the Surgut arch in order to clarify the prospects of oil potential and justify geological exploration

2021 ◽  
pp. 30-39
Author(s):  
A. V. Turabaeva ◽  
V. A. Belkina
Keyword(s):  
Industrial Development ◽  
Geological Structure ◽  
Geological Exploration ◽  
Complex Objects ◽  
Reservoir Rocks ◽  
Oil Reserves ◽  
Geophysical Information ◽  
Low Efficiency ◽  
High Degree

Due to the high degree of production of oil reserves in Western Siberia, geological exploration has been carried out mainly on complex objects for the last 10 to 15 years. The complexity of the task increases because of the fact that the predictive properties of seismic data on such objects are not high. All this leads to low efficiency of geological exploration.In order to increase the efficiency of geological exploration of complex objects, we have proposed a methodology, in which, based on the results of a comprehensive analysis of diverse geological and geophysical information, a model of the quality of hydrocarbon reserves has been built. The ranking of the zones of the quality map of reserves will justify the most effective strategy of geological exploration, that is, the strategy with the least risks. In proposed methodology, special attention is paid to assessing the economic impact of involving reserves in industrial development. Testing of the methodology on reservoir rocks of the J2/1 layer within the Surgut arch has showed its rather high forecast properties.

PROSPECTIVITY AND EXPLORATION HISTORY OF THE BARROW SUB-BASIN, WESTERN AUSTRALIA

1997 ◽  
Vol 37 (1) ◽  
pp. 117 ◽  
Author(s):  
P.W. Baillie ◽  
E.P. Jacobson
Keyword(s):  
Lower Cretaceous ◽  
Source Rocks ◽  
Reservoir Quality ◽  
Liquid Hydrocarbons ◽  
Reservoir Rocks ◽  
Long Period ◽  
Porosity And Permeability ◽  
History Of ◽  
Hydrocarbon Reserves

The Carnarvon Basin is Australia's leading producer of both liquid hydrocarbons and gas. Most oil production to date has come from the Barrow Sub-basin. The success of the Sub-basin is due to a fortuitous combination of good Mesozoic source rocks which have been generating over a long period of time, Lower Cretaceous reservoir rocks with excellent porosity and permeability, and a thick and effective regional seal.A feature of Barrow Sub-basin fields is that they generally produce far more petroleum than is initially estimated and booked, a result of the excellent reservoir quality of the principal producing reservoirs.Structural traps immediately below the regional seal (the 'top Barrow play') have been the most successful play to date. Analysis of 'new' and 'old' play concepts show that the Sub-basin has potential for significant additional hydrocarbon reserves.

The geochemical characteristics and genetic types of crude oils in the western depression of the Liaohe Basin, China

2009 ◽  
Vol 28 (3) ◽  
pp. 328-334 ◽  
Author(s):  
Guoyan Mu ◽  
Ningning Zhong ◽  
Bao Liu ◽  
Ning Zhang ◽  
Guangjie Xu
Keyword(s):  
Geochemical Characteristics ◽  
Crude Oils ◽  
Genetic Types ◽  
Western Depression ◽  
Liaohe Basin

scholarly journals KLASIFIKASI PETROFISIKA TIPE BATUAN UNTUK MEMPREDIKSI KUALITAS RESERVOAR PASIR SERPIHAN PADA FORMASI TALANG AKAR, CEKUNGAN ONWJ

2020 ◽  
Vol 4 (3) ◽  
pp. 28-40
Author(s):  
Feni Priyanka ◽  
Ordas Dewanto ◽  
Bagus Sapto Mulyatno ◽  
Riezal Ariffiandhany
Keyword(s):  
Property Values ◽  
Type Method ◽  
Reservoir Rocks ◽  
Petrophysical Property ◽  
Flow Units ◽  
A Value ◽  
Geological Conditions ◽  
Porosity And Permeability ◽  
Hydraulic Flow Units

Hydrocarbons were accumulated in reservoir, the reservoir has a lot of types depending on the geological conditions and the constituent mineral. In ONWJ basins, sub-basins Arjuna, Talang Akar Formation is sand splintersreservoir type. The presence of clay in a reservoir will reduce the resistivity and increase thesaturation, so it takes a multimineral analysis and the reservoir qualityclassification. In this study, physical properties (porosity, permeability, Rw, and saturation) and the quality of the reservoir can be identified through petrophysical analysis by utilizing log data and core analysis, and the rocktypeprediction(using R35 Winland or HFU method). In this study 5 wells (IX-A1, IX-13, IX-4, IX-7 and IX-8)used and found eight hydrocarbon zones, 6 are validated by the DST (drill steam test)data, androck type method that suitable is the method of HFU (hydraulic flow units) due to the coefficient of correlation between porosity and permeability shows a value of 0.75, based on the calculations, the eight types of rock is conclude, where the dominance of the rock typeis the type 12 with a pore size between 5-10 microns, type reservoir rocks in this study belong to the lithofacies distributary channel and mouthbar sand. By knowing the petrophysical property values, it can determine reservoir productivity and determine the zone eligible to be produced or not, by using curve SMLP (Stratigraphic Modified Lorenz Plot).

Lower Cretaceous stratigraphic characteristics and tectonic control of the eastern depression, North Yellow Sea Basin, North China

2020 ◽  
Vol 57 (10) ◽  
pp. 1180-1192
Author(s):  
Zhen Zhang ◽  
Rihui Cheng ◽  
Yanjie Shen ◽  
Liaoliang Wang ◽  
Xiaoqiang Hu ◽  
...  
Keyword(s):  
Yellow Sea ◽  
Lower Cretaceous ◽  
North China ◽  
Strike Slip ◽  
Lateral Movement ◽  
Third Order ◽  
Reservoir Rocks ◽  
North Yellow Sea ◽  
The North

The Lower Cretaceous of the eastern depression in the North Yellow Sea Basin is a set of residual strata that can be divided into K1sq1 and K1sq2 sequences. There are four lithology–lithofacies architectures summarized in the third-order sequences of wells W5, W3, W1, W9, W16, W7, W8, and W10, and they are the coarse–fine–coarse, asymmetric coarse–fine, asymmetric fine–coarse, and interbedded coarse and fine. F1, F4, F6, and F7, which are strike-slip faults, were dominant during the Early Cretaceous, and controlled the eastern depression to undergo right-lateral movement from transtension to transpression. The tectonic movement controlled different stratigraphic structure in different areas, and the fan bodies deposited along the basin margin and progradated into the basin center. The sequence models under extensional and strike-slip setting were established respectively. The transtension–transpression movement controlled the development of the sandstones in the Lower Cretaceous and improved the quality of the reservoir rocks.

DIAGENESYS STAGE ANALYSIS OF SANDSTONE INTERVAL ON WELL DAR-24, GABUS FORMATION, ANOA FIELD, WEST NATUNA BASIN

KURVATEK ◽  
2018 ◽  
Vol 2 (2) ◽  
pp. 67-76
Author(s):  
Hanindya Ramadhani
Keyword(s):  
Secondary Porosity ◽  
Linear Distribution ◽  
Reservoir Rocks ◽  
Sandstone Diagenesis ◽  
Different Depths ◽  
Calcite Cement ◽  
Primary Porosity ◽  
Stage Analysis ◽  
Pore Lining

Stage of diagenesis of a rock will effect the quality of the rock as a reservoir. Hence, it is a necessary to analyze the diagenesis stage of sandstone at Anoa Field, West Natuna Basin, since the diagenesis stage has not been identified properly. The analysis is carried out using thin section method in five different depths. The product of diagenesis is observed for its cementation level, compaction, recrystallization, dissolution, replacement, and type of porosity wich developed in the rock. The appearance of quartz overgrowth cement and pore filling and pore lining calcite cement show a diagenesis stage which are recrystallization and cementation. The appearance of bent mica mineral and suture grain contact can be a sign of late stage compaction. Dissolution of matrix, cement and grain in the sample show that the rock has come to mesodiagenesis stage. As a result of the observation, the conclusion can be made that the rock has passed the eodiagenesis and mesodigenesis phase. Porosity of the section is both primary porosity (interparticle) and secondary porosity (dissolved) with a range 15%-20% (medium to good). Crossplot depth vs porosity show a linear distribution, which when the depth is increase the porosity will decrease. So it can be concluded that the process of diagenesis is very influential on the quality of reservoir rocks in the study area.Keyword: Gabus Formation, sandstone diagenesis, stage of diagenesis.

Effect estimation of variations of petrophysical and lithological-facial characteristics on the quality of reservoir rocks

2021 ◽  
pp. 12-19
Author(s):  
A.B. Hasanov ◽  
◽  
E.Y. Abbasov ◽  
D.N. Mammadova ◽  
R.R. Kazimov ◽  
...  
Keyword(s):  
Drainage System ◽  
Fluid Flows ◽  
South Caspian Basin ◽  
Migration Flow ◽  
Reservoir Rocks ◽  
Effect Estimation ◽  
Gas Fields ◽  
2D And 3D ◽  
Oil Gas

The paper presents the results of researches on the specification of clay components, as well as the zones of intra- and interstratal fluid flows in the formation processes of oil-gas fields. The investigations have been carried out in the context of Sangachal-Duvanny-Khara-Zira (SDKhZ) field, located in Baku archipelago of South Caspian basin (SCB). It was defined that the presence of clayey chlidolite in the reservoirs are observed more effective in the values of permeability rates. The zones of intra- and interstrata of fluid flows in the reservoirs were specified based on the lithological model of productive horizons. Therefore, the presence of closed migration-flow (drainage) system both within productive horizons and in the scale of reviewed field was supposed. In support of these assumptions, 2D and 3D variation models of flow zones indicator values for intrastrata levels of productive horizons and for the section fragment of SDKhZ field have been developed.

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