Location map of cambay basin of india showing study area introduction. The little dragoon mountains where texas canyon is located and surrounding ranges, separated by valleys, form part of what physiographers describe as the basin and range province. The boundary between drainage basins is a drainage divide. The cambay shale is the main source rock in this basin.
A pericratonic basin, it is characterized by extensive carbonateplatform shelf development during middle eocene to middle miocene time. 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. Cambay basin cambay basin is situated in the state of gujarat which is in western part of india. The remotely sensed data is geometrically rectified with respect to survey of india. Basin information directorate general of hydrocarbons dgh. Apart from the bounding faults, numerous fault systems and fractures have been identified within the saurashtra horst sant 1999. Drainage basin, are from which all precipitation flows to a single stream or set of streams. E corresponding address 1&2 department of geology, university of lbadan, nigeria olukris2001@ and seemeomoh@. The lithological succession in east kutai basin, east kalimantan, indonesia.
Aug 25, 20 shale formations have laminated structures with significant variations in mechanical properties along the orientations of the bedding plane. Reservoir characterization case study, cambay basin, india. Although cambay is a mature basin, oilsource genetic relationship is yet not well understood due to complicated geology involving multiplicity of depressions, source rocks and reservoirs. Basin geology simple english wikipedia, the free encyclopedia. Geology the closepet granite of the upper reaches of the cauvery basin is a pink granite consisting mainly of quartz, plagioclase, microcline, perthiteand subordinate hornblende. Pdf the discovery of the barmer basin, rajasthan, india. The type of rocks which form there tell about the palaeoclimate of the continent. The area from which the water flows to form a stream is known as its drainage basin. 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. There are a variety of basin types depending on how they were formed. Reservoir characterization, cambay basin, inversion introduction. Geological basins are one of the two most common places inland which collect sediment the other is lakes. The remotely sensed data is geometrically rectified with respect to.
The cambay basin is one of the major hydrocarbon producing basins of india fig. Pdf structural identification and fracture characterization. All of the precipitation rain or snow that falls within a drainage basin eventually flows into its stream, unless some of that water is able to cross into an. 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. Black cotton soils, lateritic soils and sandy loams, flood plain deposits, levees, swamps, salt waste, barrier spits, sand hills, undulating. Evaluation of cambay shale cambay basin, india using geo. Williston basin russia petroleum geology subscription information. This results in anisotropy, which is an important issue in exploration. Gas shale potential of cambay formation, cambay basin, india somen mishra1 and b. The system covers 9320 km 2 encompassing 20 different oil and gas accumulations. This includes rift basins, foreland basins, pullapart basins, back arc basins, sag basins and other. The cambay basin can be divided into six tectonic blocks.
The gulf of khambhat also known as the gulf of cambay1 is an inlet of the arabian sea along the west coast of india, in the state of gujarat it is about kilometres 80 mi miles in length, and divides the kathiawar peninsula to the west from the eastern part of gujarat state. 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. Sedimentary basins of ethiopia geology of ethiopia. The radial drainage pattern exhibited in the saurashtra peninsula is an outcome of these fault systems. Gas shale potential of cambay formation, cambay basin, india. The cambay rift basin, covers area from surat in the south to sanchor in the north. The system covers 9320km2 encompassing 20 different oil and gas. Subsurface understanding of an oil field in cambay basin. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the u. The eocenemiocene bombay shelf au is an oilprone assessment unit located offshore along the west coast of india. Structural basins are geological depressions, and are the inverse of domes. 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. Reservoir characterization of cambay shale cambay basin, india in reference to shale gas exploration and exploitation. The lithological succession in east kutai basin, east.
International journal of coal geology 147148 2015 2534 27 using aseptic, strict anaerobic techniques and kept in an incubator at 60c for 20days. The cambay basin the cambay basin occupies an area of approximately 56,000 sq. The cambay basin occupies an area of approximately 54,000 sq. Morphometric analysis of a drainage basin using geographical.
The whole sedimentary sequence reaches 2,000 meters in thickness. Black cotton soils, lateritic soils and sandy loams, flood plain deposits, levees, swamps, salt waste, barrier spits. The mekele basin the mekele basin has an aerial coverage of about 8,000 square kilometers and is located in the northern part of the country. The middle zone of the basin is marked by high relief zone with ridges and valleys. In the north, the basin narrows, but tectonically continues beyond sanchor to pass into the barmer basin of rajasthan. The block cbonn20105 lies in the ahmedabadmehsana tectonic block of the cambay basin.
Samanta, mishra, and misra 1994 suggested that the organic matter derived from land plants and deposited in restricted marine environment of the cambay. The geological diversity of gujarat esents classical sequences of mesozoicpr. Sedimentary basin directorate of petroleum dop, gujarat. The goal of the study is to analyse the physical properties of two core samples from cambay basin, gujarat phase composition. Cambay basin in gujarat holds 206 bcf gas in one zone.
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. Due to this complex geology and masking of signal it was crucial to delineate the lithology to map the stratigraphic reservoirs in the zone of interest. Shale formations have laminated structures with significant variations in mechanical properties along the orientations of the bedding plane. On the southern side, the basin merges with the bombay offshore. Geophysical and geological evidence for the benuechad. 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. Evidence from field relationship and sedimentological study adeigbe, o. After a brief description of the cambay basins geology, the other aspects of exploration were discussed. 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. Understanding reservoir architecture of cambay shale india has strategic compulsion to explore and develop shale gas due to rising energy. Bombay geologic province eocene to miocene composite. It covers an area of about 53 500 km2 inclusive of about 2 500 km2 below gulf of cambay. Hillslope morphology zhillslope morphology is complex and multidimensional, so many parameters can be used as descriptors steepness, length, shape i. It is often below sea level geological basins are one of the two most common places inland which collect sediment the other is lakes.
Subaerial denudational, fluviatile, aeolian and marine processes have produced the recent deposits that cover the cambay basin. The sedimentary basins of india, onland and offshore up to the 200m isobath, have an areal extent of about 1. Sedimentary basins in india india has 26 sedimentary basins covering an area of 3. Sedimentary rocks in this petroleum province range in age from paleocene to recent and were deposited in a tertiary rift basin. Gas strike in shale reservoir in dholka field in cambay basin. 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.
Revisited in a new data on lithobiostratigraphic sunardi. It consists of the basic knowledge of the geology of cambay. An attempt has been made to determine shalegas prospectivity of cambay shale integrating wireline log, mud log, cutting and core data. Structural identification and fracture characterization of. 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. In breadth this physiographic province stretches from california and nevada eastward to west texas, and in length from idaho and oregon. It rises high in the andes, the rivers network irrigates almost half of the continent. The andes mountains are toothyedged mountain system, some of them are 4,500 miles in length, and it extends from the southern tip of south america to all the way. Utilization of seismic attributes for reservoir mapping. The discovery of the barmer basin, rajasthan, india, and its petroleum geology article pdf available in aapg bulletin 9903 march 2015 with 8,177 reads how we measure reads.
The whole basin can be divided in to three prominent physiographic zones viz. Gas shale potential of cambay formation, cambay basin. Hydrocarbon source rocks in the deep river and dan river. A basin in the geological sense, is a depression in the earths lithosphere.
Stratigraphic analysis of kadi and kalol formations, cambay basin, india authors. Geologically, this block lies at the junction of the cambay basin to the south and barmer basin to the north as indicated in fig. One of the biggest oil fields discovered in gujarats. A structural basin is a largescale structural formation of rock strata formed by tectonic warping of previously flatlying strata. The kadi and kalol formations of early to middle eocene age are thick clastic wedges in the northern part of the cambay basin, india. Jul 08, 2019 in the southern cambay basin, it was sourced from a higher plant fraction deposited in marine or fluvial deltaic environment sivan et al.
Structural basins may also be sedimentary basins, which are aggregations of sediment that filled up a depression or. The effective source rocks in the north cambay basin, india. The thick mesozoic sedimentary succession of the basin comprises sediments ranging from fluviolacustrine to deep marine origin. It is based on the subsurface study of on oil field in cambay basin. The current study deals with the cambay basin where silty sand reservoir has been identified as hydrocarbon bearing. The narmada, tapti, mahi and sabarmati rivers drain into it. Bombay geologic province eocene to miocene composite total. The physiographic diversity is a reflection of the factors of geology, climates and sea. Cawston creek is a typical small drainage basin approximately 25 km 2 within a very steep glaciated valley. The geology is of interest to oil prospectors, hydrologists and palaeontologists. The eastern zone of the basin covers a chain of rugged mountain ranges of the western ghats. In the southern cambay basin, it was sourced from a higher plant fraction deposited in marine or fluvial deltaic environment sivan et al. After a brief description of the cambay basins geology, the other aspects of exploration were.
General geology the chad basin occupies a vast area at an altitude of. Sanchor block tharad block ahmedabadmehsana block tarapur block broach block narmada block the cambay shale is the main source rock in this basin. Integration of rock physics and seismic were used in order to derive a solution to delineate the complex reservoir facies. Prefeasibility report for exploratory drilling operation. Jan 23, 2019 in the southern cambay basin, it was sourced from a higher plant fraction deposited in marine or fluvial deltaic environment sivan et al. The geoloyg area of the basin is about 58, km 2 which is about three percent of the culturable area of the country. It is about kilometres 80 mi miles in length, and divides the kathiawar peninsula to the west from the eastern part of gujarat state.
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