Project Profile
Location: Southeast Wood County, Texas, USA
Investment: US$700 million
Reserves: 1.3 billion barrels OOIP, 430 Bcf gas
Area: 40.46 sq.km
Discovery: 1940
Production start-up: 1975
The Hawkins oil field is located in southeast Wood County, Texas, USA. The field contained more than 1.3 billion barrels of original oil in place (OOIP) and 430 Bcf gas in the original gas cap. The 40.46 sq.km field, discovered in 1940, was developed on 20-acre well spacing. Unitisation was completed on 1 January 1975. Before unitisation, oil production was supported by gas-cap expansion and aquifer influx in the east. A small gas injection project was used in the west to stabilise the gas-oil contact (GOC) and to prevent oil migration into the gas cap because of the aquifer influx from the north.
The field development followed completion of the discovery well, and although drilling was restricted by war emergency regulations, 415 oil wells have been completed, producing from the Woodbine formation at an average depth of 1478.28 metres. The Hawkins field occurs on a large northeastward-trending, faulted anticline situated near the north-central part of the East Texas geosynclinal basin. A major fault downthrown toward the northwest and trending northeast-southwest crosses the east part of the field. A pronounced gravity minimum indicates that the field is underlain by a deep-seated salt mass. Structural growth increases progressively with depth to the point where the Woodbine producing formation has structural closure approximating 365.76 metres. The oil produced from the field is a predominantly asphaltic mixed-base crude with a brownish black color, and the gravity ranges from 16 to 31°. Gas occurs above the Woodbine in the sub-Clarksville sand of the Eagle Ford formation, where porosity is developed.
Operators:
Chrysaor
ExxonMobil