Dukhan is a big oil field extending over an area of approximately 80 km by 8 km. and is located over 80 kms to the West of Doha. Dukhan Field encompasses four reservoirs from North to South - Khatiyah, Fahahil and Jaleha/Diyab, three of which are oil resrvoirs , and fourth contains non associated gas . Oil and gas are separated in four main degassing stations which are continuously manned namely Khatiyah North, Khatiyah Main, Fahahil Main and Jaleha. Unmanned satellite stations are Fahahil North and Fahahil South, while Khatiyah South is now a manned station. The Diyab satellite station at the South end of the field has no process facilities and the total oil production is sent to Jaleha station for processing. Stabilized crude oil is transported through pipeline to Mesaieed port about 100 km East of Dukhan.
Dukhan oil field has production facilities to produce up to 335,000 Barrels per Day (BPD). Other production facilities are related to Associated Gas, Non Associated gas, Raw NGL production from Associated gas, Arab D gas cap NGL and Arab D condensate production. In addition to this, facilities for injection of North Field gas into Khuff Reservoir, Injection of lean gas into Arab D gas cap and water injection into the main oil reservoirs of Arab C and Arab D for pressure maintenance are also operated on continuous basis in Dukhan.
A major project of gas lift system to artificially lift the oil for enhancing production and increasing ultimate recovery from the field is under implementation and is currently under commissioning.
Arab D gas cap recycling plant to process 800 million standard cubic feet per day (MMSCFPD) of Arab D Cap Gas and recover 38,000 BPD of stabilized condensate and 750 Tons per day (TPD) of NGL was commissioned in 1998. The residue gas is re-injected back into the same reservoir. Currently a major project is in commissioning phase to upgrade the Arab D plant facilities to recover C2+ raw NGL (about 5600 TPD of NGL) and supply to NGL-4 Project in Mesaieed.
The production support activities comprise facilities of Potable water distribution, Power Station, Workshop facilities and Communication network in Dukhan Field.
In addition to the above Production/process facilities, various housing and recreational facilities are available in Dukhan and clubs, catering and security services are provided to Dukhan Residents.
Historical Background on Dukhan Field Development
Development of Dukhan field has taken place in various stages. The first well was drilled in 1939/40 confirming the presence of commercial quantity of oil. Further work was suspended due to world war –II. Development of Khatiyah sector was started from 1947 onwards and first oil was exported from Mesaieed on 31 December 1949.
Development of the other two sectors Fahahil and Jaleha/Diyab in Dukhan was carried out in stages starting from Fahahil in 1954 followed by Jaleha in 1955. Dukhan Power station was commissioned in 1958. Khuff non-associated gas reservoir was discovered in 1959 at an average depth of 10,000 feet. In 1974 Fahahil Stripping plant was also commissioned to recover raw NGL from associated gas. In 1976 first development well in Khuff reservoir was drilled and eight Khuff wellhead treatment plants were commissioned in stages from 1978 to 1982.
Powered water injection to maintain reservoir pressure of both Arab C and Arab D reservoirs was taken up in stages staring from 1989 with the last phase being completed in 1998.
The pressurization of Khuff reservoir with the surplus North Field gas was started from 1992 with the commissioning of compressor station in Fahahil area.
Development and Expansion Plans
Dukhan Gas Lift Project: This project will help in maintaining the crude oil production and deal with increasing water cut in the oil reservoirs. Gas lift system will supply gas to approximately 300 wells in Dukhan.
NGL-4/DKADU Project: The existing Arab D plant is being upgraded to produce C2+ raw NGL production of up to 5600 TPD.
Rich Associated Gas (RAG) Utilization project: To reduce flaring of Associated gas and to increase recovery of NGL from FSP. The project is currently on hold due to revised Associated Gas Production Forecast.
PWI Phase VI: The function of Powered Water Injection is to enhance oil recovery and maintain reservoir pressure in the Dukhan field for Arab C, Arab D and Uwainat reservoirs. The PWI phase VI will upgrade the two-train PWI stations to three-train stations as a result PWI capacities will increase from 538,000 Barrels of water per day (BWPD) to 708,000 BWPD.
Major civil infrastructure development project are being implemented in Dukhan. Some of the major projects are relocation of industrial facilities outside of Dukhan, Dukhan-Umm Bab-Salwa road, New Sewage treatment plant, Dukhan Housing Projects, Dual carriageway from Zikreet junction to Dukhan, Dukhan operations Headquarters Building and other civil projects.
Major Customers
The main products conditioned for export from Dukhan Fields are Crude oil, condensate, NGL and Stripped Associated gas. These products are exported to various internal and external customers
- Crude oil is exported through terminal operations department at Mesaieed and also supplied to QP refinery at Mesaieed.
- Condensates is exported to Refinery in Mesaieed
- Arab D NGL is exported to NGL-4 at Mesaieed
- NGL is exported to NGL1 and NGL 2 in Mesaieed
- SAG is exported to QNCC, QAPCO and QAFCO via QP Gas Distribution System
Major Achievements
| 1 | Drilling of first well in Dukhan | 1939/40 |
| 2 | Shipment of first crude oil from Dukhan | 1949 |
| 3 | Discovery of non-associated gas in Khuff reservoir | 1959/60 |
| 4 | Commencement of Power Water Injection in Dukhan Reservoirs for pressure maintenance. | 1989 |
| 5 | Commissioning of Arab D Gas Recycling plant to recover Condensate and NGL from Arab D Reservoir Gas Cap. | 1998 |
| 6 | Commissioning of NGL4/DKADU to recover 5600 TPD | 2003 |
| 7 | NGL from Arab D Cap Gas Commissioning of Gas Lift project | 2003 |
| 8 | Attainment of ISO 9001-2000 Quality Certification for the entire Dukhan Operations. | 2004 |
