Mumbai High Field

Bombay High is an offshore oilfield 176 km off the west coast of Mumbai, in Gulf of Cambay region of India, in about 75 m of water.[1] The oil operations are run by India's Oil and Natural Gas Corporation (ONGC).

Bombay High
Oil Rig at Bombay High
Location of Bombay High
CountryIndia
RegionGulf of Khambhat
Locationoff the coast of Mumbai
Offshore/onshoreOffshore
Coordinates19.41667°N 71.33333°E / 19.41667; 71.33333
OperatorONGC
Field history
Discovery1965
Start of production1974
Production
Current production of oil205,000 barrels per day (~1.02×10^7 t/a)
Year of current production of oil2017

Bombay High field was discovered by an Indian oil exploration team operating from the seismic exploration vessel Academic Arkhangelsky[1] during mapping of the Gulf of Khambhat (earlier Cambay) in 1964-67, followed by a detailed survey in 1972.[1] The naming of the field is attributed to a team from a survey run in 1965 analysed in the Rashmi building in Peddar Road, Cumballa Hill, Bombay. The first offshore well was sunk in 1974.[1]

Every oil resource rock requires Structural traps which are mainly salt dome, coral reefs, fault trap and fold trap. In case of Bombay High, the structure is a "north-northwest to south-southeast trending doubly plunging Anticline with a faulted east limb", 65 km long and 23 km wide",[1] and is the most probable reason to call it "Bombay High".

Geology

This is a carbonate reservoir, the main producing zone, L-III, consisting of sedimentary cycles of lagoonal, algal mound, foraminiferal mound and then coastal marsh, capped by a post-middle Miocene shale.[2] Bombay High has three blocks separated by east-west trending faults, all three with different gas-oil contacts but approximately 1355 m deep.[3]

Production
ONGC platform at Bombay High in the Arabian Sea

As of 2004, it supplied 14% of India's oil requirement and accounted for about 38% of all domestic production.

On 27 July 2005, a major fire destroyed the production platform, leaving at least 22 people dead despite rescue measures taken by the Indian Coast Guard. The platform accounted for 110,000 barrels per day (17,000 m3/d), or 15% of India's oil production. Rebuilding this is expected to take upwards of 4 months and estimated to cost around Rs. 1200 crore or US$300 million.

ONGC approved construction of seven pipelines with risers and associated top-side facilities in MHN in April 2007. These pipelines are vital for optimum utilisation from Mumbai High.

Crude oil produced from Bombay High is considered to be of very good quality as compared to crudes produced in middle east. Bombay High crude has more than 60% paraffinic content while light Arabian crude has only 25% paraffin.[4]

In November 2009, output of Bombay High fields, that accounts for half of the India's domestic oil production, fell 5.3% to 347,197 barrels per day (55,199.9 m3/d).[5]

As of 2018 the output of the field was 205,000 barrels per day (32,600 m3/d). [6] [7]

References
  1. Rao, R.P., and Talukdar, S.N., Petroleum Geology of Bombay High Field, India, in Giant Oil and Gas Fields of the Decade:1968-1978, Halbouty, M.T., editor, AAPG Memoir 30, 1980, Tulsa: American Association of Petroleum Geologists, ISBN 0891813063, p. 487
  2. Rao, R.P., and Talukdar, S.N., Petroleum Geology of Bombay High Field - India, in Giant Oil and Gas Fields of the Decade:1968-1978, Halbouty, M.T., editor, AAPG Memoir 30, 1980, Tulsa: American Association of Petroleum Geologists, ISBN 0891813063, p. 504
  3. Rao, R.P., and Talukdar, S.N., Petroleum Geology of Bombay High Field, India, in Giant Oil and Gas Fields of the Decade:1968-1978, Halbouty, M.T., editor, AAPG Memoir 30, 1980, Tulsa: American Association of Petroleum Geologists, ISBN 0891813063, pp. 500 and 503
  4. "Billingual-Home". ONGC. Retrieved 2010-08-14.
  5. "November gas production up 47.6%, crude oil down 1.5%". The Hindu Business Line. 2009-12-25. Retrieved 2010-08-14.
  6. https://timesofindia.indiatimes.com/business/india-business/ongc-makes-significant-oil-gas-discovery-in-arabian-sea/articleshow/62325917.cms
  7. Mumbai High
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