Panna-Mukta oilfield

The Panna-Mukta oilfield consists of two contiguous offshore oil fields to the northwest of Mumbai, India.

Location

The Panna field is 95 km northwest of Mumbai, and has an area of 430 km2. It is just north of the Bassein gas field and about 50 km east of the Bombay High oilfield. The Mukta field is about 100 km northwest of Mumbai, and has an area of 777 km2. Average water depth is 45 m in the Panna field and 65 m in the Mukta field. As of May 1999 estimated recoverable reserves of oil were 287 million barrels. Source rock is of Panna Formation

Ownership

The Panna-Mukta oil field and the Tapti gas field to the north were discovered by the Indian state-owned Oil and Natural Gas Corporation (ONGC), who initially operated the fields. Following a privatization policy a Reliance - Enron consortium gained a 25-year lease on the oil field in February 1994. Oil production at that time was 12,000 barrels per day. The lease was awarded under a production sharing arrangement. The Government of India would receive a variable share of profit depending on the investment multiple. In December 1994 a joint venture between ONGC (40%), Enron (30%) and Reliance (30%) took control of the field.

Development and production

The initial phase of development was from 1995 to 1999, during which the joint venture installed three wellhead platforms, drilled development wells and established facilities for processing and transport. In a subsequent phase between November 2004 and March 2007 the joint venture installed pipelines and two wellhead platforms in the Panna oilfield. As of 2006, production centered on the PPA facility, designed to handle 45,000 oilbbl of oil per day and 90 e6ft3 per day at standard conditions of gas. Fluid from seven satellite platforms reaches PPA through subsea lines, where it is processed. Crude oil is loaded onto a tanker and gas is sent via a line to Hazira. The PPA can accommodate 75 workers.

In 1999 production was 27,000 oilbbl of oil per day and 71 e6ft3 per day of gas. As of 2006 the fields were producing 30,000 oilbbl of oil per day and 90 e6ft3 per day. As of 2008 the field was producing 40,000 oilbbl of oil per day and 190 e6ft3 per day of gas. All of the oil was being sold to Indian Oil and all the gas to GAIL India. On 3 June 2008 there was an explosion in which one worker was killed, forcing a temporary halt to production.[5] As of July 2010 the field was producing about 35,000 oilbbl of oil per day and 205 e6ft3 per day of gas. On 20 July 2010 production was halted due to a leak in the sub-sea hose near the Panna single buoy mooring. Production could not be resumed until October that year.[6]

In October 2008 it was reported that British Gas was waiting for approval of a US$150 million program to construct nine in fill wells. These would be used to pump water into the reservoir to maintain pressure and improve recovery. The joint venture had started to implement a program to drill nine more production wells and install two additional platforms, with the platforms being due for commissioning in June 2009.[7] As of 2011 BG Group was continuing to incrementally develop the fields by well intervention, infill drilling and installation of new projects such as the recently installed Panna L.[8]

location map	India
coordinates	19.36298°N, 71.94122°W
relief	yes
country	India
region	Gulf of Khambhat
location	off the coast of Mumbai
offonshore	Offshore
operators	Reliance Industries, BG Group, ONGC
oil production bbl/d	19000
production year oil	2016
production gas mmcuft/d	205
production year gas	2010
est oil bbl	287

Panna-Mukta oilfield

Location

Ownership

Controversy

Development and production

References