Raniganj east basin west bengal at 2 fields cbm in onshore areas. Gas strike in shale reservoir in dholka field in cambay basin. Entire basin is divisible into five tectonic blocks fig 1. Oil has not been found in kutch basin, which is mainly an onshore mesozoic basin.
The town of khambat cambay in presentday gujarat was its capital. Subsurface understanding of an oil field in cambay basin. The general basinal axis is nnwsse, but swings are noticed across major lineaments faults. Ahmedabadmehsana tectonic block this block lies between the khari river in the north and the vatrak river in the south. It offers low fullcycle breakeven prices and high returns, thanks to an extensive network of infrastructure and a focus on nearfield exploration. In the north, the basin narrows, but tectonically continues beyond sanchor to pass into the barmer basin. 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. Introduction among the 76 priority geologic provinces identified for the world energy assessment project of. Cambay101 sedimentary basin petroleum reservoir scribd. Apart from the bounding faults, numerous fault systems and fractures have been identified within the saurashtra horst sant 1999. Regional tectonic framework, structure and evolution of the western marginal basins of india. These basins are characterized by high geothermal gradients attributed to the shallowness of the mantle in this region. Shale oil exploration from paleoceneearly eocene sequence in cambay rift basin, india.
The key fields in the cambay basin are ankleshwar, kalol, sobhasan and gandhar. Nds offers a full range of products, including catch basins, grates, channel drains. 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 shale with reference to shale gas. Brittleness modeling of cambay shale formation for shale. Source potential and reservoir fabric of the cambay shale, cambay basin. After a brief description of the cambay basin s geology, the other aspects of exploration were. The basin, around 425 km long with an average width of about 8 km, extends from luni river in the north to tapti. Oct 26, 2014 one of the biggest oil fields discovered in gujarats cambay basin. Direct detection of hydrocarbons in indian oil fields by using ipds. Gravity and magnetic methods for geological studies.
Geology of cambay basin pdf the cambay rift basin, a rich petroleum province of india, is a narrow, throughout the geological history, except during early. Pdf light hydrocarbons geochemistry of surface sediment. Drainage materials and installation forward company information nds leads the exterior drainage industry with superior quality, design and service. The formation of the cambay basin began following the extensive outpour of deccan basalts deccan trap during late cretaceous covering large tracts of western and central india. India cambay exploration basin report wood mackenzie.
The cambay basin the cambay basin occupies an area of approximately 56,000 sq. One of the biggest oil fields discovered in gujarats cambay. Further, usgs has indicated that these basins have also potential for shale oil. Major rivers draining gujarat are the narmada, tapti. Saurashtra craton lies on the west of cambay basin while aravalli is located in. Cambay basin, namely cbonn20052 by government of india under the production sharing contract psc for exploration of hydrocarbon. Aerially, this is the lasrgest block in the basin, extending from dholka. Shale oil exploration from paleoceneearly eocene sequence in. The formation consists of marine mudstone with some interbedded siltstone and sandstone intervals, coal, and carbonaceous mudstone. The discovery of the barmer basin, rajasthan, india, and. The lower tapi basin extends over an area of 2920 sq. During 2019, gspc ran a sales process for a number of its projects in the cambay basin. The upper paleocene to middle eocene cambay shale was evaluated for shale oil, and the paleocene olpad formation was evaluated for tight sandstone gas.
Pdf shale oil exploration from paleoceneearly eocene sequence in cambay rift basin, india find, read and cite all the research you need. Sedimentary basin directorate of petroleum dop, gujarat. Petrographic characteristics and paleoenvironmental history of. Study of the deccan traps of cambay basin by geophysical. Appendix d gas chromatograms of the analysed cambay shale and. Cambay basin is a roughly nnwsse trending petroliferous graben situated in the northwestern margin of indian peninsula in the state of gujarat fig. Cambay basin is an intracratonic rift graben located in the state of gujarat, india. 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 cambay shale was deposited in deltaic and nearshore marine environments. Study of cambay and krishnagodavari basin for shale oil.
Tectonosedimentary evolution of northern part of cambay. Upper part of cambay shale formation containing siltstone was also targeted whereas the lower part which dominantly consists of shale was never thought to be a reservoir. Integrated reservoir characterization of cambay shale for shale gas resource estimation in ankleswar area cambay basin gujarat india. The tectonic evolution of cambay rift in the northwestern part of indian peninsula is closely related to the origin and evolution of indian plate biswas et al. 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. These basins were formed by rifting along precambrian tectonic trends.
Bombay offshore and cambay are two major oilproducing basins in the western margin. The kutchsaurashtra, cambay and narmada basins are pericontinental rift basins in the western margin of the indian craton. The current study deals with the cambay basin where silty sand reservoir has been identified as hydrocarbon bearing. It is bounded on its eastern and western sides by basin. The effective source rocks in the north cambay basin, india. December 2019 quarterly report company announcement. Geochemical evaluation of part of the cambay basin, india. Bombay province cambay basin the cambay basin began as a failed rift in the late cretaceous during which time. Aug 25, 20 shale formations have laminated structures with significant variations in mechanical properties along the orientations of the bedding plane. The basin has traditionally been more oilprone than gasprone. The study area falls in the sanchorpatan tectonic block in the northern part of cambay basin. Tectonosedimentary evolution of northern part of cambay basin tusar ranjan sahoo1 and mainak choudhuri2. Reservoir characterization case study, cambay basin, india. The cambay rift basin, covers area from surat in the south to sanchor in the north.
Cambay, kambay or khambhat, was a princely state during the british raj. The state was bounded in the north by the kaira district and in the south by the gulf of cambay. Gas shale potential of cambay formation, cambay basin, india. It is based on the subsurface study of on oil field in cambay basin.
Eocenemiocene cambay deltaic assessment unit 80430102 eocenemiocene cambay deltaic assessment unit 80430102. After a brief description of the cambay basin s geology, the other aspects of. The discovery of hydrocarbon in few wells in cambay basin in early 2000 changed the paradigm of exploration strategy in cambay basin. Gaurav siddharth department of earth science gairola, indian institute of technology, bombay. Pdf formation evaluation of fractured basement, cambay. 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 effect due to the crystalline basement and the trap thickness. In parallel with the cambay psc, a field development plan in support of the application for an extension of the psc was submitted in september 2017 and approved by the government of india in april 2018. Formation evaluation of fractured basement, cambay basin, india article pdf available in journal of geophysics and engineering 92. 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. The basin is divided into five tectonic blocks separated by major cross trends. 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. Exploring possible existence of dense ferruginous sandstone. The economic driver behind the quest to characterize such dense sandstone reservoir is that.
Onshore oil exploration drilling phase cambay basin cb. Early eocene equatorial vegetation and depositional. In the north, the basin narrows, but tectonically continues beyond sanchor to pass into the barmer basin of rajasthan. Pdf the effective source rocks in the cambay basin, india. 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. Cambay basin in gujarat holds 206 bcf gas in one zone. The sedimentary basins of india, onland and shallow offshore, up to the 200m isobath, area is about 1.
Light hydrocarbons geochemistry of surface sediment from petroliferous region of the mehsana block, north cambay basin. Evaluation of cambay shale cambay basin, india using geo. Lignite samples collected from vastan, rajpardi and tadkeshwar lignite mines of cambay basin gujarat were subjected to organic. Lower tapi basin consists of main tapi stream from ukai reservoir to its mouth in the gulf of cambay. The cambay basin is an elongated, intracratonic rift basin graben of late cretaceous to tertiary located in the state of gujarat in northwestern india. Further, usgs in april 2014 estimated technical recoverable volume of 62 million barrels of shale oil for cambay basin and more than 3. Geoelectric structure of northern cambay rift basin from. The cambay basin is a tertiary intracratonic graben in the western onshore part of india. Sanchor block tharad block ahmedabadmehsana block tarapur block broach block narmada block the cambay shale is the main source rock in this basin. The cambay basin, situated in the northwestern part of indian craton, is a narrow elongated riftgraben which came in to existence as a result of rifting in the early paleocene. It is variously described as an intracratonic type basin mathur et al. Geology of cambay basin pdf the cambay rift basin, a rich petroleum province of india, is a narrow, throughout the geological history, except during early syn rift stage, the. In offshore areas, these companies covered 2 fields in cauvery basin and 4 fields in krishnagodavari basin on the east coast and 3 fields in mumbai basin and 2 fields in cambay basin on the west coast. The deccan trap, composed of horizontal lava flows, forms the basement of the cambay basin.
Evaluation of cambay shale cambay basin, india using geomechanical properties. 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. Bombay geologic province eocene to miocene composite total. Subsurface understanding of an oil field in cambay basin 2. Eocenemiocene cambay deltaic assessment unit 80430102.
Featured items newest items bestselling alphabetical. In december 2008, mercator signed production sharing contracts with the government of india for exploration of petroleum in two blocks under the seventh new exploration licensing policy round nelpvii. World petroleum resources project assessment of potential. Major lineaments in this block trend in the nnw sse direction. 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. Oct 31, 2019 oilex holds a 45% participating interest pi in the cambay field, with gspc holding the remaining 55% pi. Basin information directorate general of hydrocarbons dgh. The samples were collected from three lignite fieldsvastan. In the present paper lignites from the cambay basin have been studied for their hydrocarbon potential. Basin printers inc in williston, nd get driving directions to 7 w broadway williston, nd 58801. Abstract the natural gamma ray spectrometry can be used effectively and efficiently to predict the depositional environment.
The radial drainage pattern exhibited in the saurashtra peninsula is an outcome of these fault systems. The cambay basin can be divided into six tectonic blocks. In the following period, relative subsidence of the basin continued leading to the accumulation of the younger cambay shale. 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 it is about kilometres 80 mi miles in length, and divides the kathiawar peninsula to the west from the eastern part of gujarat state. 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. An attempt has been made to determine shalegas prospectivity of cambay shale integrating wireline log, mud log, cutting and core data. The basin covers an onshore area of about 20,000 m2. 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. Sedimentary basins of india total 26 sedimentary basins have been recognized and they are divided into four categories based on their degree of hydrocarbon prospectivity. Integrated reservoir characterization of cambay shale for shale gas. Gas shale potential of cambay formation, cambay basin, india somen mishra1 and b. The end of this sequence is marked by a regressive phase leading to deposition of claystone, sandstone, and shale alternations and a limestone unit of the dadhar formation.
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. Source potential and reservoir fabric of the cambay shale. The samples were collected from three lignite fields vastan. This paper is an attempt to address the hydrocarbon prospectivity of deccan trap in the northeastern part of the basin by. The stype blocks are situated onshore in the prolific cambay basin, gujarat.
The primary aim is to understand the reservoir architecture of shale gas. The length of the tapi river in lower tapi basin is 129 km. The basin s presence was suspected from gravity and magnetic data in the late 1980s but not confirmed until 1999 from seismic and drilling. Tectonic setup, geological setting and basin evolution. The effective source rocks in the cambay basin, india. In some parts of the basin, some reflections in the seismograms obtained in the course of seismic surveys, could be correlated to the trap surface. Current scenario and future prospects of shale gas in. In the southern cambay basin, it was sourced from a higher plant fraction deposited in marine or fluvial deltaic environment sivan et al. Dholka is one of the complex oil field in cambay tarapur tectonic block wherein gas has been struck, for the first time, in shale reservoir of middle eocene.
Petrographic characteristics and paleoenvironmental. Amazon river basin organization of american states. Cretaceous sediments which underlie the deccan traps are exposed in the eastern and western margins of the basin and are also encountered in. Regional tectonic framework, structure and evolution of. Bombay geologic province eocene to miocene composite total petroleum system, india by c. This results in anisotropy, which is an important issue in exploration.
Depositional environment prediction of ingoli field of. Scientific research outcome report reservoir characterization of cambay shale cambay basin, india in reference to shale gas exploration and exploitation. Shale oil and gas directorate general of hydrocarbons dgh. Pdf shale oil exploration from paleoceneearly eocene. Cambay basin is a narrow, nnwsse trending intracratonic rift basin, formed at the end of cretaceous which is located on western margin of the indian shield fig. Cambay basin is bounded on its eastern and western sides by basinmargin faults and extends south into the offshore gulf of cambay, limiting its onshore area to 7,900 mi2. Abstract cambay is matured petroliferous basin in the western part of india.1485 201 1140 71 961 973 1457 136 507 523 1320 873 127 1194 1371 818 1057 434 135 992 62 731 1586 450 198 681 1489 276 1098 978 521 540 1206 234 1474 170 153