Oilex Set to Begin Sabarmati Workover
Oilex Ltd said that following approval of the work program by the Government of India, the company is initiating field rehabilitation activities on the Sabarmati Field. On completion of the first of these activities, Oilex expects the production rate from Sabarmati-1 well to increase from the current average 2-5 barrels of oil per day to a sustainable rate of 75-90 barrels of oil per day.
The field is located on the southern culmination of a trend of producing oil fields operated by ONGC, on the outskirts of Ahmedabad, the largest city in Gujarat. Oil has been produced from the one well in the Sabarmati Field Contract Area at very low rates on an intermittent basis since 2001 when the Niko-GSPC Joint Venture intervened in the well.
Late last year, in anticipation of approval by the Government of the assignment of 40% interest from Niko in the field, Oilex commenced an influx study on the potential productive capacity of the existing well. The rate at which fluid flowed into the well bore under controlled pressure conditions was measured over a fixed period each day in 2 phases. The fluid was separated through the surface facilities, measured to ascertain the average water cut and the oil was stored for later sale to ONGC, the nominated buyer. The proportion of water in the total fluid volume dropped to about 2% - 5% after the first day of testing and maintained that level for the duration of both phases.
The well has produced, in total, about 9,800 barrels of oil since it started producing in 2001 and is currently producing at 5-10 barrels of fluid (2-5 barrels of oil) per day under natural flow from an Eocene reservoir which is about 5m thick, through 2m of perforations. The results of the influx study indicate that the flow rate could be increased to an average sustainable rate of about 75-90 barrels of oil per day with the installation of an hydraulic sucker rod pump. The equipment is on order and is expected to be installed by the end of February. Existing production facilities at Sabarmati Field are capable of handling more than 600 barrels of fluid (oil plus water) per day.
From experience at the Cambay Field to the south, a critical component of the rehabilitation program is the acquisition of new seismic data. Although difficult to acquire in this built up area, Oilex is investigating the possibility of conducting a survey within the next 4 months using an innovative low-impact seismic technology that will greatly enhance the potential coverage of the contract area. A single vintage seismic line is the only existing coverage.
In the event that the seismic survey and estimates of potential reserves justify further work, the intent is to drill additional wells, subject to Joint Venture approval, to improve the field production rate.
Participants in the Sabarmati Production Sharing Contract are:
- Oilex NL (India) Holdings Ltd (Operator), 40%
- Gujarat State Petroleum Corp. Ltd, 60%
Operates 40 Offshore Rigs
Manages 8 Offshore Rigs
- Venezuela's PDVSA To Tap Oil Customers To Pay $449MM To ONGC (Nov 15)
- Sources: India ONGC Strikes 'Good' Offshore Oil, Gas Find (Sep 20)
- India To Acquire Seismic Data Of 48,000 Line kms To Boost Oil, Gas Output (Sep 12)
Company: Niko Resources more info
Operates 1 Offshore Rigs
- KrisEnergy Spuds Bangora-6 Development Well in Bangladesh's Block 9 (Sep 05)
- ICSID Orders Petrobangla to Pay Niko $35M It Owed for Gas Deliveries (May 31)
- Reliance Said To Revive Offshore India Gas Project By End-2017 (May 27)
Company: GSPC more info
- Timor-Leste Issues Termination Notice for PSC JPDA 06-103 (Jul 16)
- GNRL Oil & Gas Finds Oil at ND#1A Well in Gujarat (Sep 23)
- GSPC Books Re-Gasification Capacity at Petronet LNG's Dahej Terminal (Jan 07)
Company: Oilex NL more info
- Oilex Plans to Employ Workover Rig at Cambay-19Z (Jul 15)
- Oilex Gets Feet Wet with Cambay-19Z Test Well (Jun 10)
- Oilex's India, Oman Operations on Schedule (Apr 29)