ERHC Energy Inc (ERHE)

[TOB]

Existing Seismic and Gravity studies on ERHC’s Block 11A

The below are existing “seismic studies as well as gravity and magnetic studies” on ERHC’s Kenya Block 11A and adjacent block 11B. There is a great deal of data already acquired to inform the exploration program.

There is a great deal of existing data on Block 11A from previous seismic and gravity studies, research, and geological similarities that prove ERHC’s Block 11A in Kenya is highly prospective, and will serve to guide further more targeted studies which will be used to identify the best targets and guide exploration.

Apparently some are unfamiliar with the Kenya Rift International Seismic Project (KRISP), which covered ERHC’s Kenya Block 11A. It was done in three phases identified as KRISP85, KRISP90 and KRISP90.

Apparently some are also unfamiliar with the 2007 airborne gravity reconnaissance study with Free Air and Bouguer products of the Lotikipi Plains where ERHC’s block 11A and adjacent 11B are located (Gravity and magnetic studies). This integrates the 1986 AMOCO gravity study, the geological map, existing 2D seismic, and literature on the geology of area. Geosoft has a product to reprocess, integrate and interpret the results.

Software modelling of studies of ERHC’s Kenya block and the one next to it.

(Study area. Scroll down to bottom for more charts and text)



There are challenges with just using seismic as the local geology makes these “noisy”. There is also the lack of constraints from actual drilling and sampling of the formation geology which is expensive to acquire through drilling. (Lack of actual drilling results to correlate with the seismic studies.)

Here is the resulting Bouguer anomaly overlay of the various components integrated, 1986 AMOCO in black and the 2007 study in multi colour, overlayed on the topography. Note the Lotikipi Plain, where ERHC’s Kenya block is located. (Existing Gravity and magnetics on ERHC’s Block 11A)



The Geosoft platform also helps define the Precambrian basement and estimate possibly reservoir quality sediment thickness beneath basalts.

Here is what they start with. Existing Seismic over the Lotokipi basin where ERHC’s Block 11A is located. Very noisy and undefined.



Here is the result. Estimates of the thickness of possibly reservoir quality sediment accumulations in sub-basalt grits with the Precambrian basin contact.



Link will play video if you have an embedded player like quicktime or realplayer

Geosoft website

I posted about this back on August 4, 2001 in this post