Article

Journal of Engineering Research

, 3:8

First online:

Open Access This content is freely available online to anyone, anywhere at any time.

Local source rock palynology of ANL -1 and E -12 wells sediments offshore Niger delta, Nigeria: Implication for hydrocarbon prospectivity.

  • Oghenerhoro OdededeAffiliated withDepartment of Geology, Delta State University Abraka Email author 

Abstract

Local source rock potential of ANL-1 and E-12 well sediments in offshore, Niger Delta have been evaluated based on organic matter maturation studies to provide leads for hydrocarbon exploration. The studied wells display diverse palynoflora at different stratigraphic levels and indicate variable palaeoecological conditions of the depositional environment. E -12 well sediments are composed of the lower Agbada formation and are thermally mature (TAI 2.8; 1932 -2238 m and TAI 3.0; 2410 – 2603 m ), showing top of oil window and intense generation of liquid hydrocarbon while the upper part ( TAI 1.7; 1230 – 1770 m) and the overlying Benin formation (TAI 1.5; 681 – 1176 m) are thermally immature. Immature (TAI 1.3) thermal facies is determined for depths: 216 – 1773 m (Benin formation) in the ANL -1 well, while mature (TAI 2.7) thermal facies is determined for depths: 1863 – 2556 m and TAI 3.0 is determined for depths 2583 – 3663m (Agbada formation) in the ANL – 1 well. Shale of the lower and upper part of Agbada formation in the ANL – 1 and E – 12 indicates an optimum maturation level of a good hydrocarbon source rock potential.

Keywords

Hydrocarbon maturation oil window palynology source rock