Oil-generation kinetics for organic facies with Type-II and -IIS kerogen in the Menilite Shales of the Polish Carpathians

2006 ◽  
Vol 70 (13) ◽  
pp. 3351-3368 ◽  
Author(s):  
M.D. Lewan ◽  
M.J. Kotarba ◽  
J.B. Curtis ◽  
D. Więcław ◽  
P. Kosakowski
Keyword(s):  
Type Ii ◽  
Organic Facies ◽  
Oil Generation ◽  
Polish Carpathians ◽  
Menilite Shales

Oil generation of lacustrine Type II shale: A case study of the Shahejie Formation, Laizhou Bay Sag, Bohai Bay Basin (China)

2020 ◽  
Vol 195 ◽  
pp. 107839
Author(s):  
Haoran Liang ◽  
Guosheng Xu ◽  
Fanghao Xu ◽  
Deliang Fu ◽  
Jiaju Liang ◽  
...  
Keyword(s):  
Laizhou Bay ◽  
Bohai Bay ◽  
Type Ii ◽  
Bohai Bay Basin ◽  
Oil Generation ◽  
Shahejie Formation

RECENT ORGANIC GEOCHEMICAL EVALUATION OF THE CENTRAL EROMANGA BASIN

1987 ◽  
Vol 27 (1) ◽  
pp. 106
Author(s):  
Ganjavar Khavari Khorasani
Keyword(s):  
Gas Chromatography ◽  
Saturated Hydrocarbons ◽  
Bulk Properties ◽  
Organic Facies ◽  
Geochemical Evaluation ◽  
Oil Generation ◽  
Gas Chromatography Mass Spectroscopy ◽  
Rock Eval ◽  
Distinct Increase ◽  
Eromanga Basin

Systematic analyses of bulk properties and of molecular composition, by gas chromatography (GC), fluorescence spectroscopy, gas chromatography-mass spectroscopy (GC-MS), reflectance photometry and 'Rock-Eval' pyrolysis of core samples from three stratigraphic bores from the central and northern-central Eromanga Basin, reveal the following:The organic facies variations in the central Eromanga are considerable; however, the biofacies can be grouped into three major types.The sediments do not enter the mature zone of oil generation until a reflectance level of 0.65 per cent Rv max. or higher is reached. The Birkhead Formation, with a 'hydrogen-rich' type III kerogen, is only marginally mature and the amounts of hydrocarbons already generated are minor. In the Early Jurassic sedimentary unit (Basal Jurassic Shale Unit), however, there is a distinct increase in the level of S1/Organic Carbon indices and in the maturity of organic matter. While the extracts from younger Jurassic sequences of the basin display a substantial waxy character, the bitumens derived from the Basal Jurassic Unit are highly aromatic in character and contain few saturated hydrocarbons.

Prospect Evaluation Based on Integrated Petroleum System Analysis: Block E Case Study, South-Eastern Edge of Precaspian Basin Kazakhstan

2021 ◽  
Author(s):  
Ainura Zhanserkeyeva ◽  
Akzhan Kassenov
Keyword(s):  
Vertical Migration ◽  
Oil And Gas ◽  
Source Rocks ◽  
Late Triassic ◽  
Lower Permian ◽  
Type Ii ◽  
Thermal Maturity ◽  
Type Iii ◽  
South Eastern ◽  
Oil Generation

Abstract Positive geological and geochemical prerequisites have been identified for the purpose of increasing hydrocarbon resource potential in the under-explored study area. A methodology has been developed for assessing the hydrocarbon potential and prospecting for new promising oil and gas accumulation zones using the technology of basin modeling, provided there is a lack of initial data. A high hydrocarbon source rock generative potential and the degree of thermal maturity of the Lower Permian, Mid Carboniferous and Upper Devonian strata of the south-eastern part of the Precaspian depression have been revealed. Seismostratigraphic and geodynamic analysis was carried out and the main stages of the geodynamic evolution of the study area were reconstructed based on combination of all available geological and geophysical information, recent exploration drilling results and unpublished subsurface studies. The results of thermotectonic modelling confirm the possibility of vertical migration of hydrocarbons generated in Paleozoic sediments. A revision of the previously performed interpretation of 3D seismic data has been carried out; and for the first time, intrasalt sedimentary packets of presumably Upper Permian age have been identified as independent objects, which can be potential hydrocarbon traps. For the Lower Permian deposits, type III kerogen predominates, which may be associated with an increase in collisional processes in the Late Paleozoic time and an active input of plant organic matter. For Mid Carboniferous sediments, mixed type II / III kerogen or type II kerogen prevails. Analysis of the evolution of thermal maturity indicates the unevenness of the entry of potential oil and gas source strata into the main zone of oil generation. For kerogen type III of the Lower Permian source rocks, the peak of oil generation falls on the Late Cretaceous. For predominantly carbonate and terrigenous-carbonate Middle Carboniferous source rocks the peak of generation falls on the Jurassic. The most submerged Devonian source rocks are located mainly in the zone of wet gas generation. The development of salt tectonics from the Late Triassic to the Cenozoic contributed to the vertical migration of hydrocarbons into the post-salt complex. The identified oil fields in the Upper Triassic-Jurassic stratigraphic section are mainly confined to the four-way dip structural closured above the steep flanks of salt structures.

scholarly journals Fácies orgânica da Formação La Luna, Bacia do Valle Superior Del Magdalena, Colômbia: implicações para a geração de petróleo e caracterização paleoambiental

2007 ◽  
Vol 30 (2) ◽  
pp. 65-81
Author(s):  
Juliana Andrade Iemini ◽  
João Graciano Mendonça Filho ◽  
Felix Thadeu Teixeira Gonçalves ◽  
Taíssa Rêgo Menezes
Keyword(s):  
Upper Cretaceous ◽  
Thermal Evolution ◽  
Organic Geochemistry ◽  
Maturation Stage ◽  
Hydrocarbon Production ◽  
Thermal Maturation ◽  
Oil Reserves ◽  
Organic Facies ◽  
Oil Generation ◽  
La Luna

Upper Cretaceous pelitic rocks generate most of the oil reserves in Colombia. In Del Magdalena Upper Valley (MUV), the existence of good quality outcrops and thermal evolution levels that vary from immaturity to the end of the oil generation "window" makes it one of the most appropriate regions for the study of primary migration and generation of oil in Upper Cretaceous. The main objectives of this work were to study the organic facies of La Luna Formation in an outcrop section called Riacho Bambuca (Bambuca Creek), determine the oil generation potential and characterize the paleoenvironment. For this research, 24 samples were used in palynofacies analysis (characterization of the kerogen components assembly) and in organic geochemistry analysis (Total Organic Carbon - TOC analysis and Rock-Eval pyrolysis, provided by Colombia Oil Institute - ECOPETROL). The palynofacies analysis included the use of microscopy techniques (transmitted white light and incident blue light). Furthermore, a Spore Coloration Index (SCI) analysis was made in order to determine the thermal maturation stage. The studied material was composed mainly of an amorphous organic substance, with its fluorescent coloration varying from yellow to bright orange. The palynomorph group is represented by spore morph and dinoflagellate cysts. The ligneous material are present in very low percentages; they are mainly opaque phytoclasts. The results of geochemical analysis showed TOC contents ranging from medium to high, excellent potential for the generation of hydrocarbons (PG >; 4 mg HC/g of rock), hydrogen index ranging from 329 to 589 mg HC/g, and low values of oxygen index, characterizing type II kerogen. The low degree of thermal maturation was determined by Spore Coloration Index values ranging from 2,5 to 3,0, Tmax values below 440ºC and Hydrocarbon Production Index inferior to 0,2. According to the organic facies data, La Luna Formation deposited in a marine environment with facies from disoxic-anoxic distal shelf and suboxic-oxic distal basin; there was kerogen of excellent quality, and its quantity was adequate for the generation of oil.

scholarly journals Geochemical and organic petrographic characteristics of high bituminous shales from Gurha mine in Rajasthan, NW India

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Alok K. Singh ◽  
Mohammed Hail Hakimi ◽  
Alok Kumar ◽  
Adeeb Ahmed ◽  
Nor Syazwani Zainal Abidin ◽  
...  
Keyword(s):  
Organic Matter ◽  
Vitrinite Reflectance ◽  
Immature Stage ◽  
Type Ii ◽  
High Hydrogen ◽  
Reducing Conditions ◽  
Kerogen Type ◽  
Oil Generation ◽  
Bituminous Shale ◽  
Index Value

AbstractA high bituminous shale horizon from the Gurha mine in the Bikaner sub-basin of the Rajasthan District, NW India, was studied using a collection of geochemical and petrological techniques. This study investigated the nature and environmental conditions of the organic matter and its relation to the unconventional oil-shale resources of the bituminous shale. The analyzed shales have high total organic carbon and total sulfur contents, suggesting that these shale sediments were deposited in a paralic environment under reducing conditions. The dominant presence of organic matter derived from phytoplankton algae suggests warm climatic marine environment, with little connection to freshwater enhancing the growth of algae and other microorganisms. The analyzed bituminous shales have high aquatic-derived alginite organic matters, with low Pr/Ph, Pr/n-C17, and Ph/n-C18 ratios. It is classified as Type II oil-prone kerogen, consistent with high hydrogen index value. Considering the maturity indicators of geochemical Tmax (< 430 °C) and vitrinite reflectance values less than 0.40%VRo, the analyzed bituminous shale sediments are in an immature stage of the oil window. Therefore, the oil-prone kerogen Type II in the analyzed bituminous shales has not been cracked by thermal alteration to release oil; thus, unconventional heating is recommended for commercial oil generation.

scholarly journals Palynofacies and Paleoenvironment investigation of the Hauterivian – Early Aptian Ratawi and Zubair formations, Balad oilfield, Central Iraq

2019 ◽  
Vol 24 (6) ◽  
pp. 74
Author(s):  
Adnan Q. Mahdi1 ◽  
Fawzi M. Al-Beyati2 ◽  
A. M. Al Tarif ◽  
El-Arabi H. Shendi4 ◽  
Mohamed I .Abdel-fattah4
Keyword(s):  
Source Rock ◽  
Marine Environment ◽  
Immature Stage ◽  
Mature Stage ◽  
Type Ii ◽  
Thermal Maturity ◽  
Observation Study ◽  
Organic Facies ◽  
Source Rock Evaluation ◽  
Oil Gas

This work depends on a detailed optical observation study of sedimentary organic facies from the Hauterivian – early Aptian Ratawi and Zubair formations from the Ba-1 well, Balad oilfield, Central Iraq. This study has manifested the advantages of palynofacies analysis methods for source rock evaluation of the studied formations, twenty five cutting rock samples organic facies data indicate a wide variation of source richness, quality and thermal maturity, the Ratawi Formation samples has the Type-II< I kerogen indicates marine environment in immature stage, while Zubair Formation has the Type-II<<  I kerogen (oil-gas prone) reflect the marine environment with  terrigenous influx in early mature to mature stage (early oil window).   http://dx.doi.org/10.25130/tjps.24.2019.111

Type II Solar Radio Bursts over Solar Cycle 21

1994 ◽  
Vol 144 ◽  
pp. 283-284
Author(s):  
G. Maris ◽  
E. Tifrea
Keyword(s):  
Solar Radio ◽  
Interplanetary Space ◽  
Impulsive Phase ◽  
Radio Bursts ◽  
Type Ii ◽  
Solar Radio Bursts ◽  
Strong Energy ◽  
Mass Ejection ◽  
Geophysical Effect ◽  
Radio Event

The type II solar radio bursts produced by a shock wave passing through the solar corona are one of the most frequently studied solar activity phenomena. The scientific interest in this type of phenomenon is due to the fact that the presence of this radio event in a solar flare is an almost certain indicator of a future geophysical effect. The origin of the shock waves which produce these bursts is not at all simple; besides the shocks which are generated as a result of a strong energy release during the impulsive phase of a flare, there are also the shocks generated by a coronal mass ejection or the shocks which appear in the interplanetary space due to the supplementary acceleration of the solar particles.

Heat-Etching with a Bullivant Type II Simple Freeze-Cleave Device

1970 ◽  
Vol 28 ◽  
pp. 106-107 ◽  
Author(s):  
Ronald S. Weinstein ◽  
N. Scott McNutt
Keyword(s):  
New Zealand ◽  
General Hospital ◽  
Massachusetts General Hospital ◽  
Type I ◽  
Type Ii ◽  
Collaborative Effort ◽  
Temperature And Pressure ◽  
The University

The Type I simple cold block device was described by Bullivant and Ames in 1966 and represented the product of the first successful effort to simplify the equipment required to do sophisticated freeze-cleave techniques. Bullivant, Weinstein and Someda described the Type II device which is a modification of the Type I device and was developed as a collaborative effort at the Massachusetts General Hospital and the University of Auckland, New Zealand. The modifications reduced specimen contamination and provided controlled specimen warming for heat-etching of fracture faces. We have now tested the Mass. General Hospital version of the Type II device (called the “Type II-MGH device”) on a wide variety of biological specimens and have established temperature and pressure curves for routine heat-etching with the device.

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