Panna-Mukta-Tapti Gas Field

Business Standard

GAIL India, the country’s largest marketer and transporter of gas, has bagged the rights to market the entire gas produced from the Panna-Mukta and Tapti (PMT) fields jointly which would add around Rs 550 crore to the company’s revenues, a senior company official said.

The gas field in the western offshore, which is jointly operated by Reliance, British Gas and ONGC, currently produces 17 million cubic metres per day (mcmd) of gas. GAIL will get to transport and market the entire volume from April 1, 2008. It currently markets 4.8 mcmd of gas.

“With the incremental volumes for marketing, we will earn about Rs 100 crore annually by way of marketing margins and Rs 450 crore more annually from transportation charges,” the official said.

In proportion to their equity in the block, ONGC, RIL and British Gas market 12.2 mcmd of gas from the PMT field.

GAIL, which currently does not get a marketing margin on PMT gas, would be allowed to charge $0.12 per million British thermal unit on the entire gas volume from April 1, 2008, the official said.

ONGC holds 40 per cent stake in these fields, while Reliance and BG India hold 30 per cent each.

In March last year, the petroleum ministry had allowed the joint venture partners to directly market 5.6 mcmd gas from these fields for two years till March 31, 2008, and give the remaining 4.8 mcmd to GAIL.

The output from these fields has now increased to around 17 mcmd. While GAIL’s marketing share has remained the same, the joint venture partners have increased their direct sale of gas.

The ministry also found that the joint venture partners have entered into long-term gas supply contracts with customers, violating its March 2006 order of direct gas sales up to March 31, 2008.




Panna Gas Field:

Panna gas field is 430 sq. kms in area, located 50 km east of the giant Bombay High field (95 km NW of the Mumbai city) on the basin of the River Panna, which is also home to the Panna Tiger Reserve. It lies immediately to the north of the Bassein gas field separated by a shallow NE-SW trending syncline. The average water depth is 45 m.

Structure of Panna field is a broad, composite domal with approximately 60 to 80 m of vertical closure at the Middle Eocene level.

Mukta Gas Field:

The Mukta gas field is 777 sq.kms in area, located 100 km Northwest of the Mumbai city. It is contiguous with the Panna block to the east and lies in an average water depth of 65 m. Present field production is 30000 BOPD and 90 MMSCFD of Gas.

Tapti Gas Field:

Tapti field covers an area of 1471 sq.kms and lies 160 km north-north west of the Mumbai city along the basin of the River Tapti. It is approximately in a water depth of 20 M on the northeast flank of Surat depression, of Bombay Offshore Basin. The block comprises of two fields South Tapti and Mid Tapti, which occur in two large structural culminations.

At present, well fluid from 7 satellite platforms of Panna field and one Mukta platform reached to PPA through infield subsea lines. After processing, crude oil is loaded to a stand by Tanker through SBM loading facility and gas is dispatched through 18" & 22 kms export line tied to ONGC's 36" & 42" gas line going to Hazira. Living quarter at this facility accommodates 75 personnel. Facility comprises dehydration and sweetening plant for providing fuel for power generation and gas lift system.

Tapti Processing Platform (TPP) was designed, constructed and installed to handle 180
MMSCFD of Gas and 100000 barrels of liquid (both water and condensate). After recent de-bottlenecking the handling capacity has been enhanced to 210 MMSCFD. Two trend of TEG based Gas dehydration system process the gas to the recommended specification. Gas from 3 satellite platforms (19 Wells) comes to TPP for separation, dehydration, metering and dispatch. Gas is dispatched through18" & 70 kms export line tied to ONGC's 36" & 42" gas line going to Hazira.