ZADCO

The Concession

The Emirate of Abu Dhabi, the largest of the seven Emirates of the United Arab Emirates, lies along the southern coast of the Arabian Gulf.
Commercial quantities of oil in Abu Dhabi were first discovered offshore in September 1958, at Umm Shaif some 150 kilometers from the capital. Discovery of oil in commercial quantities onshore followed in August 1959 at Murban (now known as Bab), which lies in the desert some 100 kilometers to the southwest of the capital. Since that time numerous oil fields, large and small, have been discovered both onshore and offshore.
JODCO's involvement in the petroleum industry in Abu Dhabi started in 1973 with its participation in the Umm Shaif and the Lower Zakum fields within the Abu Dhabi Marine Areas (ADMA) concession, in partnership with the Abu Dhabi National Oil Company (ADNOC), British Petroleum (now BP) of Great Britain, and CFP (now TOTAL) of France.

A few years later, JODCO joined in the development of three oil fields with ADNOC; the Upper Zakum field in 1977, the Umm Al Dalkh in 1978 and the Satah field in 1980. Successful production from these three fields began during the 1980s.
Three Operating Companies were set up for the projects: the Abu Dhabi Marine Areas Operating Company (ADMA-OPCO) in 1977 to operate ADMA concession including the Umm Shaif and the Lower Zakum fields, the Zakum Development Company (ZADCO) in 1977 to develop the Upper Zakum field, and the Umm Al Dalkh Development Company (UDECO) in 1978 to develop the Umm Al Dalkh and the Satah fields. The activities of UDECO were later amalgamated with ZADCO in 1988 in order to optimize operation control and minimize costs.

ADMA-OPCO

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ADMA-OPCO

Abu Dhabi Marine Operating Company
Date of establishment : July 1977
Objectives of the company To develop the Umm Shaif and the Lower Zakum fields. To explore for crude oil in the ADMA concession

Oil Field Shareholders Location Start of production API Gravity
Umm Shaif ADNOC  60%
BP        14 2/3%
TOTAL  13 1/3%
JODCO  12%
140km offshore, north-west of Abu Dhabi City 1962 37°
Lower Zakum ADNOC   60%
BP        14 2/3%
TOTAL  13 1/3%
JODCO  12%
80km offshore, north-west of Abu Dhabi City 1967 40°

ADMA-OPCO's producing fields are the Umm Shaif and the Lower Zakum fields. The Lower Zakum crude oil is gathered at the Zakum Western Super Complex and then pumped directly via a 90 kilometer-long subsea pipeline to the oil processing and export terminal at Das Island. The Umm Shaif Crude oil flows 35 kilometers under its own pressure to Das Island.
Water Injection for the maintenance of the reservoir pressure has been applied at both the Umm Shaif and the Lower Zakum fields since 1976. The reservoir pressure support program in the Umm Shaif field has been augmented by Crestal Gas Injection since 1994.

ウムシャイフ油田

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ZADCO

Zakum Development Company
Date of establishment : November 1977
Objectives of the company : To develop the Upper Zakum, the Umm Al-Dalkh and the Satah fields.
To explore and develop the Jarnain and the Dalma structures

Oil Field Shareholders Location Start of production API Gravity
Upper Zakum ADNOC      60%
ExxonMobil 28%
JODCO      12%
80km offshore, north-west of Abu Dhabi city 1982 34°
Umm Al-Dalkh ADNOC  88%
JODCO  12%
20km offshore, north-west of Abu Dhabi city 1985 31°
Satah ADNOC  60%
JODCO  40%
180km offshore, north-west of Abu Dhabi city 1987 39°

Crude produced from the Upper Zakum field is gathered at the Zakum Central Complex through 3 satellite platforms, then pumped 60 kilometers to Zirku Island Terminal for stabilization, storage and shipping. Crude from the Umm Al Dalkh field is gathered at the Central Production Complex and then pumped via the Zakum Central Complex at the Upper Zakum field to Zirku Island.
The Satah Crude is gathered at the Production Manifold Platform in the Satah Field and flows directly under its own pressure via a 58 kilometer-long pipeline to Zirku Island, where it is treated and degassed prior to loading on tankers.
Water Injection has been applied to maintain the reservoir pressure since 1984 at the Upper Zakum field, and since 1986 at the Umm Al Dalkh field. In the Satah field, Crestal gas injection has been introduced since 1988, and has been augmented by water injection since 1998. Gas injection is currently under temporary suspension due to well integrity issues.
Four artificial islands are currently under construction in addition to the existing satellite platforms in order to increase oil production volune from the Upper Zakum field.

ZADCO

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