In the north, the basin narrows, but tectonically continues beyond sanchor to pass into the barmer basin of rajasthan. The whole basin can be divided in to three prominent physiographic zones viz. The cambay basin the cambay basin occupies an area of approximately 56,000 sq. Reservoir characterization case study, cambay basin, india priyabrata chatterjee, anil malkani, abajyoti boruah, ikhilesh dwivedi and peter hansen summary the cbos2 block in the cambay basin is located offshore west india in the gulf of khambat figure 1. Note the cyclic pattern in the neutrondensity log associated with episodic lava flows.
The length of the tapi river in lower tapi basin is 129 km. Aerially, this is the lasrgest block in the basin, extending from dholka. The discovery of the barmer basin, rajasthan, india, and. Subsurface understanding of an oil field in cambay basin. Jun 11, 2019 the basin, located in the western states of india, has been actively explored since 1960 with production started in 1961 by ongc. Topographically, tableland varies from 300the 600 m. The quaternary geology of the cambay basin is studied with the help of aerial photographs and spot checking in the field. Location map of cambay basin of india showing study area introduction. In the north, the basin extends into rajasthan and in south and south west into continental shelf of arabian sea through the gulf of cambay. The well known agriculturally rich alluvial basin of gujarat rises from the estuarine tracts between narmada and tapi rivers, and extends 250 miles 402 km northwards merging into the desert plains of rajasthan and the rann of kutch. All of our offeringsfrom our popular bath bombs to our unique shampoo and conditioner barsare chemicalfree and specially formulated for our customers. The middle zone of the basin is marked by high relief zone with ridges and valleys. Aug 25, 20 shale formations have laminated structures with significant variations in mechanical properties along the orientations of the bedding plane.
Though there is a geological risk of not finding gas in the resource plays, a detailed study of the shale samples will prove to be beneficial for better understanding of the cambay. Exploration of shale oil and gas resources in india is at preliminary stage. Cambay basin cambay basin is situated in the state of gujarat which is in western part of india. Study of the deccan traps of cambay basin by geophysical. To the north, the saurashtra peninsula is flanked by the gulf of kachchh and to its west and south is the arabian sea. World petroleum resources project assessment of potential. The basin is divisible into separate morphotectonic blocks as a result of block. The basin s presence was suspected from gravity and magnetic data in the late 1980s but not confirmed until 1999 from seismic and drilling. Geographic location of the basin the cambay rift basin, a rich petroleum province of india, is a narrow, elongated rift graben, extending from surat in the south to sanchor in the north. Hcg and hce, which combine source rock richness, thickness, and. Major lineaments in this block trend in the nnw sse direction. Introduction and geologic setting the cambay basin is an elongated, intracratonic late cretaceous to tertiary rift basin, located in the state of gujarat in northwest india.
Apdf merger demo directorate general of hydrocarbons. The study area location in the cambay basin, india, with distribution well location in the south ahmedabadmehsana block. The state was bounded in the north by the kaira district and in the south by the gulf of cambay cambay was the only state in the kaira agency of the gujarat division of the bombay presidency, which merged into the baroda and gujarat states agency in 1937. An attempt has been made to determine shalegas prospectivity of cambay shale integrating wireline log, mud log, cutting and core data. Morphotectonic of sabarmaticambay basin, gujarat, western.
After a brief description of the cambay basin s geology, the other aspects of. The cambay basin is one of the major hydrocarbon producing basins of india fig. Stratigraphic analysis of kadi and kalol formations, cambay basin, india. Pdf geochemical evaluation of part of the cambay basin, india. Deccan trap and the geologic framework of the cambay basin.
Cambay basin in gujarat holds 206 bcf gas in one zone. Pdf in broachjambusar and ahmedabadmehsana blocks of cambay. Definite inversion during late eoceneoligocene is indicated by generally shallowmarine to lagoonal conditions of deposition and probable growth of structures. The us oil supply has been on an unprecedented surge of 1. The prospective area consists of a graben created during late cretaceous failed rifting and a delta extending southwest from the graben toward the bombay shelf.
It is about kilometres 80 mi miles in length, and divides the kathiawar peninsula to the west from the eastern part of gujarat state. Stars show pre2006 earthquake stars show pre2006 earthquake locations while circles show post2006 epicenters. Cambay basin extends northwestwards into rajasthan. The cambay basin can be divided into six tectonic blocks. After a brief description of the cambay basin s geology, the other aspects of exploration were discussed. The goal of the study is to analyse the physical properties of two core samples from cambay basin, gujarat phase composition, crystallographic preferred orientation, crystal. The gulf of khambhat, also known as the gulf of cambay, is a bay on the arabian sea coast of india, bordering the state of gujarat. The cambay basin geological setting the cambay basin occupies an area of approximately 56,000 sq.
Cretaceous sediments which underlie the deccan traps are exposed in the eastern and western margins of the basin and are also encountered in the subsurface. In the attempt to study the buried deccan trap layers in the cambay basin, the ground magnetic surveys have not been very useful as the data combine the ef. Todayit is a saline wasteland interspersed with marshes and, lakes. Sedimentary basin directorate of petroleum dop, gujarat. The bombay high field is by far the largest in the basin. A pericratonic basin, it is characterized by extensive carbonateplatform shelf development during middle eocene to middle miocene time.
Evaluation of cambay shale cambay basin, india using geo. Stratigraphic analysis of kadi and kalol formations, cambay basin, india authors. The key fields in the cambay basin are ankleshwar, kalol, sobhasan and gandhar. The cambay basin occupies an area of approximately 54,000 sq. Lower tapi basin consists of main tapi stream from ukai reservoir to its mouth in the gulf of cambay.
The discovery of the barmer basin, rajasthan, india, and its petroleum geology. Gas shale potential of cambay formation, cambay basin. This basin extends to the north in offshore as a narrow graben. Solid moisturizers natural, fresh, uplifting basin. The state was bounded in the north by the kaira district and in the south by the gulf of cambay.
It consists of the basic knowledge of the geology of cambay basin, basin analysis, petroleum geology, study of well logs, seismic data visualization, its. Petroleum system modeling and risk analysis, cambay basin. Subaerial denudational, fluviatile, aeolian and marine processes have produced the recent deposits that cover the cambay basin. These basins were formed by rifting along precambrian tectonic trends. Bombay geologic province eocene to miocene composite total petroleum system, india by c. Asia india gulf of cambay cambay basin hazira field 0. The sedimentary rocks along the coast form almost a low flat country. Bombay offshore basin ongc only report wood mackenzie. In the southern cambay basin, it was sourced from a higher plant fraction deposited in marine or fluvial deltaic environment sivan et al. Gas shale potential of cambay formation, cambay basin, india. The data selection and validation process for the mekong river basin study involved three steps. After a brief description of the cambay basin s geology, the other aspects of exploration were.
After first 3d seismic data acquisition and processing in gandhar in 199495, the area was covered by a total of twenty different 3d campaigns till date. Mehsanaahmedabad, tarapur, broach and narmada, figure 1. The cambay shale is the main source rock in this basin. Prefeasibility report for exploratory drilling operation at. Aqueduct metadata document mekong river basin study pdf. The great basin area in the northern snake range near the utahnevada boarder. Therefore, the geology of the basin in the vicinity of the ahmedabad city is briefly outlined according to a recent publication by banarjee et al. The current study deals with the cambay basin where silty sand reservoir has been identified as hydrocarbon bearing. Regional tectonic framework, structure and evolution of the western marginal basins of india. The lower tapi basin extends over an area of 2920 sq. Evaluation of total organic carbon content, thermal. Understanding basement fracture architecture in padra field, south. The cambay basin, a rift sag tertiary basin, in the western onshore part of india includes mehsana, ahmedabad, tarapur, broach, and narmada blocks, separated by faults aligned transverse to the general northsouth axis of the rift.
The kadi and kalol formations of early to middle eocene age are thick clastic wedges in the northern part of the cambay basin, india. Subsurface understanding of an oil field in cambay basin 2. The matapedia basin is a large, mainly marine, composite twopart successor basin that extends through central maine, northwestern new brunswick and gaspe peninsula. Our solid moisturizers relieve dry skin and strengthen skins natural moisture barrier. The cambay basin is an intra cratonic graben and bounded by series of faults one after another paralleling the dharwar trend and cuts across the narmada and aravalli trends. Ahmedabadmehsana tectonic block this block lies between the khari river in the north and the vatrak river in the south. Hindustan petroleum corporation limited hpcl is an indian oil and natural gas company with its headquarters at mumbai, maharashtra. The gulf of khambhat is about 200 km 120 mi long, about 20 km 12 mi wide in the north and up to 70 km 43 mi wide in the south. Well logs within the deccan trap basement section in padra field. Cauvery basin forms a part of the south indian shield that preserves an early formed crust. It covers an area of about 53 500 km2 inclusive of about 2 500 km2 below gulf of cambay. Gas strike in shale reservoir in dholka field in cambay basin. Oct 26, 2014 cambay basin, which extends from surat in the south to sanchor in the north, covers an area of about 59,000 sq km with a hydrocarbon resource of more than 15 billion barrels.
This oil prone assessment unit is located both on and offshore along the west coast of india. Pdf the effective source rocks in the cambay basin, india. Basin information directorate general of hydrocarbons dgh. Chapter 2 geology, seismotectonics and seismicity of gujarat 2. Pdf evaluation of cambay shale cambay basin, india using. The cambay basin in the nw part of the indian peninsula is a commercial petroleum producer from tertiary sediments resting on the basic lava flows known as deccan traps. The kutchsaurashtra, cambay and narmada basins are pericontinental rift basins in the western margin of the indian craton. About basin at basin, we invite you to discover the fresh, fragrant, and fun way to pamper yourself with our diverse collection of allnatural bath and beauty products. Chapter 2 geology, seismotectonics and seismicity of gujarat. Petroleum system modeling and risk analysis, cambay basin, india monmayuri sarma1. The discovery of oil and gas in the barmer basin in northwest india was one of the more significant global discoveries in the decade 20012010.
Bombay province cambay basin the cambay basin began as a failed rift in the late cretaceous during which time. The upper paleocene to middle eocene cambay shale was evaluated for shale oil, and the paleocene olpad formation was evaluated for. The basin has an extensive transportation and processing network which has allowed ongc to bring new fields onstream quickly. Conditions by basin d escribing the condition of a water body 110 miles long poses a challenge. The cambay basin represents platform structure of avlakogen type. One of the biggest oil fields discovered in gujarats cambay. In the cambay basin, oilgas reservoirs and potential source rocks occur.
The eastern zone of the basin covers a chain of rugged mountain ranges of the western ghats. Schematic geological cross sections along the lines aa, bb, cc, and dd are in. Subbasin definition is a geological basin formed within or as part of another basin. Geological map of the ariyalur sub basin showing the distribution of cretaceous and tertiary formations modified after. Bombay geologic province eocene to miocene composite total. The subsurface information gathered during exploration for oil and gas in the cambay basin shows it as a deep graben with 5 km or more of tertiary and quaternary sediments resting on the deccan trap floor.
Understanding basement fracture architecture in padra. Understanding reservoir architecture of cambay shale india has strategic compulsion to explore and develop shale gas due to rising energy. The gulf of khambhat also known as the gulf of cambay 1 is an inlet of the arabian sea along the west coast of india, in the state of gujarat. Location map of cambay basin on the map of india right. This results in anisotropy, which is an important issue in exploration.
Gulf of cambay south part 1896 the gulf of khambhat, also known as the gulf of cambay, is a bay on the arabian sea coast of india, bordering the state of gujarat. Sanchor block tharad block ahmedabadmehsana block tarapur block broach block narmada block the cambay shale is the main source rock in this basin. Mehsana block aligned anklesvar field anklesvar formation api gravity banerjee and rao basalts basement broachjambusar block cambay shale cambay tarapur block chandra and chowdhary chowdhary 1969 clastics claystone coal coarse clastic cretaceous crude oil. Production and well operations production chemistry, metallurgy and biology corrosion inhibition and management including h2s and co2 1. In this work, an effort is made to integrate the current data. Basin, evaluated the functions of geological factors in overpressure generation based on our understanding of the compressional tectonic history and its effect on overpressure distribution, and finally, simulated the processes of overpressure generation and evolution in the basin through quantitative modeling. Located off the west coast of india, ongcs fields in the gujarat offshore and mumbai basin collectively referred to as bombay offshore basin in this report contribute almost 44% of indias oil production. Utilization of seismic attributes for reservoir mapping. Pdf structural identification and fracture characterization of north. In geology, basement is defined as any rock below a sedimen. Pdf on sep 19, 2016, anirbid sircar and others published structural identification and fracture characterization of north cambay shale. Oct 09, 2010 the cambay basin geological setting the cambay basin occupies an area of approximately 56,000 sq. Reservoir characterization case study, cambay basin, india.
Hydrology the movement of water and sediment characteristics vary within each of the sounds subbasins, as does the degree of shoreline development. Gas shale potential of cambay formation, cambay basin, india somen mishra1 and b. The effective source rocks in the north cambay basin, india. Black cotton soils, lateritic soils and sandy loams, flood plain deposits, levees, swamps, salt waste, barrier spits, sand hills. It consists of the basic knowledge of the geology of cambay. The narmada, tapti, mahi and sabarmati rivers drain into it. The town of khambat cambay in presentday gujarat was its capital.
Petroleum deposits of india oil in india oil and natural gas digboi oil field cambay basin bombay high mumbai high krishnagodavari basin kg basin cavery basin rajasthan basin geological. The eocenemiocene bombay shelf au is an oilprone assessment unit located offshore along the west coast of india. Overpressure generation and evolution in a compressional. Study of cambay and krishnagodavari basin for shale oil. Geological survey petroleum systems and related geologic studies in region 8, south asia edited by craig j. This basin is an intracratonic rift graben situated in the western part of the indian subcontinent and forms the northern extension of the large bombay offshore basin. In new brunswick the older part of the matapedia basin has been called a forearc basin, which developed during extension following the formation of the island arc represented. The block falls in the northern part of the ahmedabadmehsana tectonic block, having a number oil and gas fields, of which the prominent ones are kalol, jotana, sobhasan, becharaji and balol.
Formation evaluation of fractured basement, cambay basin, india. Subsurface understanding of an oil field in cambay basin anirudha singh, indian school of mines summary it is based on the subsurface study of on oil field in cambay basin. Location map for the cambay basin, india, showing major structural elements. The cambay rift basin, covers area from surat in the south to sanchor in the north. It is based on the subsurface study of on oil field in cambay basin. Cambay, kambay or khambhat, was a princely state during the british raj. Eocenemiocene cambay deltaic assessment unit 80430102. Regional tectonic framework, structure and evolution of. Prestack merging of different 3d seismic data sets in. Formation e valuation of fractured basement, cambay basin, india figure 1. Bombay geologic province eocene to miocene composite.
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