Source rocks are commonly shales and lime mudstones, which contain significant amount of organic matter 2. Detailed discussion on the hydrocarbon source rocks potential across the sudanese red sea prerift and synrift sedimentary successions, and their analogue equivalents, is made in the following subsections. Results highlight the variability in burial, thermal and hydrocarbon generation histories for each source rock across the basin. The total organic carbon and the hydrogen index for the source rock unit were obtained from the rockeval results. Source rocks for hydrocarbon generation incorporated. They are also evaluated by their hydrogen richness, or quality, as atomic hc or, using rock eval pyrolysis, as hydrogen index hi, which is the ratio of pyrolyzable hydrocarbon mass to rock mass. The essential elements of a petroleum system include a petroleum source rock, reservoir rock, seal rock, and overburden rock, while the processes that are required for hydrocarbon occurrence are trap formation and generation, migration, and accumulation of hydrocarbons magoon and dow, 1994.
Kerogen maturation and hydrocarbon generation seewald, 2003 thermal alteration of kerogen gasoline wet gas graphite methane comparison of two source rocks pyrolysis and gas chromatography pyrolysis hydrocarbons already in the rock hydrocarbons generated during pyrolysis remnant potential increasing temperature pyrolysis vs depth immature. Source rock rating and hydrocarbon generative potential based on the plot of petroleum potential yield py versus toc for the analyzed rock samples. The role of hydrocarbon source rocks in petroleum exploration. The name for a specific petroleum system separates it from other petroleum systems and other geologic names. Hydrocarbon source rock analyses of pakawau group and kapuni formation sediments, northwest nelson and offshore south taranaki, new zealand. Discovery and basic characteristics of highquality source rocks. In the present study, core samples from three deep boreholes in krishna. Quick evaluation of source rock kerogen kinetics using. Two source rocks are detected in hoiho 1c well, but no hydrocarbon show is recorded in those rocks. Petroleum source rock an overview sciencedirect topics. Can hydrocarbon source rocks be identified on seismic data. Hydrocarbon source rock potential of paleocene and jurassic deposits in the panjpir oilfield subsurface, punjab platform, pakistan. Hydrocarbon generation modeling and source rock characterization.
In this unit, you will learn more about hydrocarbons. The hydrocarbon generation stages were calculated using reaction kinetics data based on vandenbroucke. Realworld reading link if you have ridden in a car or a bus, you have used hydrocarbons. The source rock is the first of the essential elements necessary for hydrocarbon generation. Source rock analysis, thermal maturation and hydrocarbon. Petroleum source rocks characterization and hydrocarbon. Find, read and cite all the research you need on researchgate. Pdf source rock characterization and petroleum systems in. Pdf source rock evaluation for hydrocarbon generation in. The hydrocarbons generated from thermally mature source rock are first expelled, along with other pore fluids, due to the effects of internal source rock overpressuring caused by hydrocarbon generation as well as by compaction. In classical petroleum geology and geochemistry, these rocks typically form hydrocarbon reservoirs, while some organicrich carbonate rocks.
They provide information on the kerogen type, sedimentary environment, effective source rock identification and its thermal maturity. The gasoline and diesel fuel that are used in cars, trucks, and. Nubia source rocks have a fair source potential, while rudeis and matulla source rocks have good to very good source potential except a few samples from rudeis source rocks, which show a poor source potential. Source rock fundamentals source rocks result from a convergence of physical, biochemical and geologic processes that culminate in the formation of fine grained sedimentary rocks containing carbon and hydrogenrich organic matter. Hence, the released organic matters in acid solution. Pdf hydrocarbon source rock characterization, burial. Petroleum source rock evaluation and hydrocarbon potential in montney formation unconventional reservoir, northeastern british columbia, canada. A source rock is a rock that is capable of generating or that has generated movable quantities of hydrocarbons the first factor to be assessed in an exploration play in an area yet to be drilled is whether a source rock is present.
Source rock analysis, thermal maturation and hydrocarbon generation using rockeval pyrolysis in parts of krishnagodavari basin, india. Us9244182b2 method of assessing hydrocarbon source rock. Jan 16, 2017 source rock kinetics reflects kerogen reactivity that controls the onset and rate of hydrocarbon generation as well as the depthtemperature of oil and gas generation windows. Modeling hydrocarbon generation potentials of eocene source. Over the past two decades there has been increased interest in the availability of hydrocarbon charge through a better understanding of petroleum geochemistry and the identification and characterization of petroleum source rocks. Introduction naming a petroleum system the name of a petroleum system contains several parts that name the hydrocarbon fluid system. A total of 51 new core samples were studied, which belonged to the duhongmu, tenggeer, and aershan formations table 1. Petroleum and natural gas are the major sources of aliphatic hydrocarbon while coal is an important source of aromatic hydrocarbons.
Pdf petroleum source rocks characterization and hydrocarbon. The amount and type of organic material incorporated into a source rock are controlled, in part, by environ. Hydrocarbon source rock potential as determined by rockeval 6toc pyrolysis, northeast british columbia and northwest alberta by a. So, i will try to answer it in terms of basic facts. The classical hydrocarbon source rock in a clastic environment is an organic rich, dark olive grey to black laminated mudstone, shale, clay.
Source rocks evaluated using organic geochemical data and thermal maturity data. Feb 27, 2015 there is a difference between a source rock and reservoir. Hydrocarbon source rock evaluation of the lower cretaceous. Petroleum geochemistry and geology pdf free download. Pdf source rock distribution and hydrocarbon geochemistry. The oil trapped inside the rocks is known as petroleum. Thus, you can well understand the importance of hydrocarbons in your daily life. Pdf petroleum sourcerock evaluation and hydrocarbon. This lesson introduces the concept of source rocks for hydrocarbons, where organic material is contained and cooked over time with proper temperature and pressure conditions. Although source rock maturity varies between depocentres, large. These rocks are geochemically unique and form under specific sets of. Us7538319b2 use of thoriumuranium ratio as an indicator of. The upper part is pure black shale, organic carbon content of the hydrocarbon source rock could reach up to 16% fig.
The data are analyzed to determine the presence, thickness and lateral extent of candidate source rock based on the knowledge of the seismic behavior of hydrocarbon source rocks. Fred schroeder, retired from exxonexxonmobil presented on july, 2017. Hydrocarbon source rock in northern arizona and southern utah steven l. Among the various techniques available, the geochemical technique involving total organic carbon content toc and rock eval pyrolysis are regularly being used in hydrocarbon exploration. This chapter overviews the petroleum source rocks characterization and hydrocarbon generation, based on organic geochemical characteristics e.
The aim of this paper is to define the source rock potential of hydrocarbon generation through the determination of. Pdf openfile report 20081108 928 kb, 35 pages abstract. Threedimensional representation of the precambrian structure and subcrop map, as generated on surfer. Download in free pdf hydrocarbons are composed of carbon and hydrogen. Hydrocarbon source rocks in the deep river and dan river. Your question suggests some confusion with basic concepts. It refers to the specific set of geological disciplines that are applied to the search for hydrocarbons oil exploration. The organic matter om in the source rock is broadly term kerogen if solid or insoluble, bitumen if fluid or solvent extractable, and gas if gasseous. Basic petroleum geochemistry for source rock evaluation. Therefore, understanding source rock kinetics is critical to both quantitative resource modeling and identifying production sweet spots. Source rock evaluation for hydrocarbon generation in halal oilfield, southern gulf of suez, egypt article pdf available in egyptian journal of petroleum 253.
The evaluation of petroleum source rocks and hydrocarbon generation is a very important skill for explorationists to define the location. This report presents an interpretation of the hydrocarbon source rock potential of the triassic sedimentary rocks of the deep river and dan river basins, north carolina, based on previously unpublished organic geochemistry data. A method of assessing a hydrocarbon source rock candidate uses seismic data for a region of the earth. The important fuels like petrol, kerosene, coal gas, cng, lpg etc. For thicknesses oct 15, 2018 hydrocarbon source rock potential of three formations in panjpir oilfield in punjab platform in the eastern part of the middle indus basin, namely ranikot paleocene, samanasuk jurassic, and shinwari jurassic was investigated by using total organic carbon toc and rock eval pyrolysis analysis measurements. The type of hydrocarbon index qi is the ratio of s2s3, it is proportional to the amount of hydrogen in a source rock. Source rock evaluation for hydrocarbon generation in halal. Hydrocarbon source rock characterization, burial history, and thermal maturity of the steele, niobrara and mowry formations at teapot dome, wyoming. What is a good source rock for a hydrocarbon reservoir in. Geochemical characteristics of released organic matters by. It has been acknowledged that carbonate was identified as the source rocks of a series of oilgas fields worldwide.
Hydrocarbon source rock generative potential of the sudanese. Petroleum geology is the study of origin, occurrence, movement, accumulation, and exploration of hydrocarbon fuels. Active source rock is the rock that not only generates hydrocarbon but also expulses hydrocarbon, which controls the distribution of hydrocarbon in a basin. Radhakrishna, in developments in petroleum science, 2012. Pdf hydrocarbon source rock potential of paleocene and. However, the acid solution, which has been generated during conventional toc measurements, contain organic matters. Hydrocarbon source rock in i, northern arizona and. However, based on this study, several source rock horizons have been identified within the rudeis, kareem, and zeit formations. Use of thoriumuranium ratio as an indicator of hydrocarbon source rock download pdf info publication number us7538319b2. For evaluating the carbonate source rocks, total organic carbon toc contents act as an important indicator. Hydrocarbon source rock analyses of pakawau group and kapuni. Petroleum source rocks are evaluated by their carbon richness as total organic carbon toc in weight percent wt. They are also used as the starting materials for manufacture of many dyes and drugs. Pdf this paper presents geochemical analysis of drilled cutting samples.
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