Blue Nile Basin, Onshore, Eastern Sudan
Opportunity to invest in under-explored basin with proven Petroleum system for oil and gas and identified Prospects
- Block 8 lies in the Blue Nile Basin, which is the oldest Sudanese Rift Basins, located some 200 Km southeast of Khartoum, the surface area is around 60513.3 Km2 with a ground elevation approximately 400 Meters (Figure-1). The block falls within close proximity of the Petrodar crude oil export pipeline, Aljabalein CPF and also falls in the middle of a network of multiple transportation means. The terrain is relatively easy and simple (Figure-2).
| Figure-1: Block 8 Location Map
||Figure-2: Location Map Showing Block 8 proximity to the crude oil Infrastructure
- Most of the Block covered by tertiary- Quaternary Sediments with Precambrian basement outcrops in the Southwestern part of the Block.
- The Blue Nile Basin is a N-to-NW-trending, strongly compartmentalized rift basin with a half-graben structural style that shows maximum growth on westward-dipping listric faults.
- Blue Nile Basin is typically half graben. The eastern margin is the steep side with a major bounding fault and the western margin is the gentle slope. There is also strike slip movement giving rise to east-west transform faults and/or Relay Ramps (Figure-3).
Figure-3: Seismic line across the central Blue Nile Basin
- There were many activities have been done by Chevron and WNPOC.
- The Block is totally covered by the Magnetic & Gravity Survey, 7523 2D Seismic LKm & 11 wildcat exploration wells were drilled, all the drilled wells encountered good hydrocarbon shows and high gas reading.
- The southern terminus of the basin is structurally controlled by the E/W-trending Umm Hani Shear Zone.
Figure-4: Block 8 Gravity Map Seebase Project 2009
- There are 2 discoveries, Gas & Condensate.
- Oil has been tested on Dinder-1 well as trace amount; and also in West Dinder well while drilling.
- Mixed oil/gas prone source rocks is seen from the wells drilled with high TOC values.
- The Blue Nile Basin has a proven petroleum system.
- Trap types include structural, combined structural/stratigraphic, onlap/pinchout and subcrop plays below unconformities.
- Beside the conventional Oil and Gas, Blue Nile Have Most of the Main Parameters Makes Shale Gas Applicable.
Figure-5: East-West cross section passing through Hosan-1, Hosan W-1, Dinder-1, West Dinder-1 and Tawakul-1 wells showing Blue Nile Basin Formations correlation.
- Blue Nile (Early – Mid Jurassic), deposited in a semi deep to deep restricted lake with evaporates developed in the central part and less sand influx environment. Blue Nile is the main source rock for the basin.
- Dinder III (Mid – Late Jurassic), deposition is dominated with a shallow lake environment with some delta system coming in to the basin.
- Dinder II and I (Early Cretaceous), deposited in a shallow lake environment with more sediment influx compared to Dinder III.
- At Dinder I DST result produced a trace of oil.
- At lower Dinder II/ upper Dinder III, Discovery-1; was gas (16.9 mmscf/d)) and Discovery-2 was gas with some condensate (7.3 mmscf/d _24.6 stb/d (52.4 API)