The cambay basin of western india has been proved as the most prominent and promising basin for major shale oil and gas discoveries. The study area falls in the sanchorpatan tectonic block in the northern part of cambay basin. The cambay basin is a tertiary intracratonic graben in the western onshore part of india. 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. Asia india gulf of cambay cambay basin hazira field 0. In general, areas of high fluoride overlap areas with high. The cambay rift basin, a rich petroleum province of india, is a narrow, throughout the geological history, except during early syn rift stage, the north. Mapping of iodine, lithium and strontium in oilfield water of. Deep gas exploration in cambay basin, india semantic scholar. Stratigraphic analysis of kadi and kalol formations, cambay basin, india.
The eocenemiocene bombay shelf au is an oilprone assessment unit located offshore along the west coast of india. Pdf shale gas potential of north cambay basin, gujarat. The end of cambay shale deposition is again marked by the development of a widespread unconformity that is present throughout the basin. Cambay basin, india from refraction and wideangle reflection data. The subject well is a recently drilled and completed in cambay field offshore in west coast of india. Conventional and basincentered accumulations in the strata between sr7 and sr89 that contain free hydrocarbons under pressure are likely. Ril holds 100% participating interest pi in this block which is located at a distance of about kms from ahmedabad in gujarat, india, in the cambay basin. May 05, 2019 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.
Coventional and basincentered accumulations in the strata between sr7 and sr89 that contain free hydrocarbobs under pressure are likely. Subsequently, sr6 and sr5 in the central cambay and sr6, sr5, and sr4 in the south charged the reservoirs in their respective drainage areas. The cambay basin is divided into five tectonic blocks based on transverse fault systems, namely narmadatapti, jambusarbroach in the south of the cambay basin and tarapurcambay, ahmedabadmehsana as well as sanchorpatan in the north of the cambay basin biswas 1982, 1987. Aug 03, 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 study area falls in the northern part of the ankleswar oil field, which is an important part of the narmadatapti block of south cambay basin dhar and bhattacharya, 1993. The cambay basin in india is a half graben containing more than seven kilometers of cenozoic sedimentary rocks. The key fields in the cambay basin are ankleshwar, kalol, sobhasan and gandhar. Gas shale potential of cambay formation, cambay basin. Cambay basin is an intracratonic rift graben located in the state of gujarat, india. Major lineaments in this block trend in the nnw sse direction. Application of nuclear magnetic resonance logs for.
After a brief description of the cambay basin s geology, the other aspects of exploration were. Deccan trap, cambay basin introduction the study area is situated on the northeastern rising flank of cambay basin fig. A pericratonic basin, it is characterized by extensive carbonateplatform shelf development during middle eocene to middle miocene time. Ahmedabadmehsana tectonic block this block lies between the khari river in the north and the vatrak river in the south. 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 addition to the cambay field, oilex has interests including the exploration permits wa388p, northwest shelf, offshore australia that has large gas potential and jpda 06103 in the timor sea. Study of the deccan traps of cambay basin by geophysical methods. Tender for hiring of slickline services for the block cbonn20108 cambay basin, gujarat, india tender no. North cambay basin and south cambay basin being separated by the mahi river mayor, s. The cambay rift basin, a rich petroleum province of india, is a narrow, elongated rift graben, extending.
Apr 29, 2020 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. A case for revisiting the evolutionary history of pericratonic cambay basin, india. The present work is an exploration study of shales of different. After landing the completion, two mechanical plugs were installed to nipple down bop and nipple up xmas tree.
The late paleocenemid eocene cambay shale, spread throughout basin, has been the main source rock for cambayhazad. The state was bounded in the north by the kaira district and in the south by the gulf of cambay. Identification of hydrocarbon microseepage using trace metal. From north to south, the blocks are these sediments are characterised by an assortment of illsorted, high energy trap derived materials.
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. 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. Strategies for improvement of hydrocarbon production in cambay basin study of cambay basin introduction the cambay basin is located in gujarat state, on the western margin of india. Apr 20, 2019 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. Identification of hydrocarbon microseepage using trace. Basin information directorate general of hydrocarbons dgh.
The gas and oil in shale are held as free hydrocarbons within natural fractures, pore spaces and some gas are stored. The late paleocenemid eocene cambay shale, spread throughout basin, has been the main source rock for cambay hazad. Shale oil exploration from paleoceneearly eocene sequence in. The effective source rocks in the north cambay basin, india. Origin of high fluoride in groundwater in the north gujarat. Origin of high fluoride in groundwater in the north. 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. Cambay, kambay or khambhat, was a princely state during the british raj.
Production and well operations production chemistry, metallurgy and biology corrosion inhibition and management including h2s and co2 1. The basin, located in the western states of india, has been actively explored since 1960 with production started in 1961 by ongc. Jun 11, 2019 the key fields in the cambay basin are ankleshwar, kalol, sobhasan and gandhar. About gujarat and the indian gas market the cambay field is located in the heart of gujarats industrial corridor. The current study deals with the cambay basin where silty sand reservoir has been identified as hydrocarbon bearing. 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. Depositional processes and sequence stratigraphic framework of. Pdf outcrop study in south cambay basin, india researchgate. Subsurface understanding of an oil field in cambay basin 2. An attempt has been made to determine shalegas prospectivity of cambay shale integrating wireline log, mud log, cutting and core data. Cambay basin in gujarat holds 206 bcf gas in one zone.
Reservoir characterization of cambay shale cambay basin, india in reference to shale gas exploration and exploitation. The thickness of the cambay shale varies widely from 50 to 70m over structural highs like mehsana horst, ankaleswar high and 500 2000m in hazira, broach, tankari, tarapur and patan depressions fig. The block cbonn20105 lies in the ahmedabadmehsana tectonic block of the cambay basin. Generalized stratigraphy of cambay basin negi et al.
In context of the geological setting of the basin in general and with special reference to cambay shale. Pdf shale gas potential of north cambay basin, gujarat, india. It lies between the west and northwestern margin of indian shield between latitudes 21n and 25n and longitudes 7115e and 7330e in the states of gujarat and rajasthan. In the southern cambay basin, it was sourced from a higher plant fraction deposited in marine or fluvial deltaic environment sivan et al.
In context of the geological setting of the basin in general and with special reference to the cambay shale, there is the likely presence of excellent reservoir character like pores, fractures and a significant amount of kerogens. Aug 20, 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 first, 1st order paleocene rift sequence relates to. The town of khambat cambay in presentday gujarat was its capital. The discovery of oil in ankleshwar structure in gave boost to the exploration in the cambay basin. Benefits by integrating core, image and nmr data for shale. Massive eruption of lava flowed covering almost the whole of the cambay basin forms the tectonic. 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. This region is severely affected by endemic fluorosis due to ingestion of groundwater containing excessive fluoride. Mar 23, 2020 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.
Study of the deccan traps of cambay basin by geophysical. Division of essar oil limited to cambay basin, a proven. Gas strike in shale reservoir in dholka field in cambay basin. Bpcl, invites ebids from eligible bidders for hiring of. The indrora field is located mehsana ahmedabad block north cambay basin. Cambay basin cambay basin is situated in the state of gujarat which is in western part of india. Tectonosedimentary evolution of northern part of cambay. Bombay geologic province eocene to miocene composite total. The study area covers part of the southwestern ahmedabad. This paper reports on the origin of high fluoride in a regional alluvial aquifer system under water stress in the north gujaratcambay ngc region in western india. Cambay basin is covering an area of about 59000 sq km, 425 km long and width 8 km in the central part approximately.
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. The basin lies predominantly onshore, with only the southwestern corner offshore in the gulf of cambay. It is based on the subsurface study of on oil field in cambay basin. With an objective to understand factors controlling high fluoride concentration in groundwater of this region. It covers an area of about 53 500 km2 inclusive of about 2 500 km2 below gulf of cambay. Origin of high fluoride in groundwater in the north gujaratcambay region, india. An approach has been made to evaluate the shale gas potential of cambay shale formation of cambay basin. In the north, the basin narrows, but tectonically continues beyond sanchor to pass into the barmer basin of rajasthan. 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 kadi and kalol formations of early to middle eocene age are thick clastic wedges in the northern part of the cambay basin, india. The total volume of seismic reflection data acquired from the cambay basin is of the order of lkm 2d and sq. 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 petroleum system in this part of the basin consists of cambay shale acting as source rocks, sands within kalol and kadi formations constituting the reservoir rocks and tarapur formation.
Indian petroleum publishers, 2004 petroleum 171 pages. The effective source rocks in the cambay basin, india article pdf available in aapg bulletin 863 march 2002 with 2,954 reads how we measure reads. Pdf the effective source rocks in the cambay basin, india. This paper reports on the origin of high fluoride in a regional alluvial aquifer system under water stress in the north gujarat cambay ngc region in western india. Subsurface understanding of an oil field in cambay basin. Apr 19, 2020 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. Prefeasibility report for exploratory drilling operation. In the northern part of cambay basin, the lower and upper part shaly units distinguish. Understanding reservoir architecture of cambay shale india has strategic compulsion to explore and develop shale gas due to rising energy. Mapping of iodine, lithium and strontium in oilfield water. Ahmadabad ahmadabadmehsana 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 dadhar formation deccan trap deccan trap basalts deposition enewsw. The cenozoic sedimentary fill in cambay basin is represented by two 1st order depositional sequences. 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.
Early eocene equatorial vegetation and depositional. Bombay geologic province eocene to miocene composite. Stratigraphic analysis of kadi and kalol formations, cambay basin, india authors. Twodimensional velocity model of the crust beneath the south. Mineralogical and morphological characterization of older. 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. 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. After a brief description of the cambay basins geology, the other aspects of exploration were. Hydrocarbon prospectivity of deccan trap in northern.