What is the main limit flaw

Southern Lokichar Basin - South Lokichar Basin

The South Lokichar Basin is a Cenozoic sedimentary basin in Kenya. It is part of the East African rift system, although it is no longer active. It has been the site of a number of oil discoveries by Tullow Oil and its partners since 2012.


The southern Lokichar Basin is a north-south trending half-ditch with the main boundary fault on the western edge. It is approximately 80 km long, 25 km wide and has a maximum depth of over 7 km. The main flaw, known as the Lokichar flaw, is a relatively small angle and planar cross-section, although the slope along strike varies significantly from 12 ° to 60 °.

To fill

The basin is filled by a succession of Oligocene (possibly as old as Eocene) to Miocene sedimentary rocks. There is a major interval of volcanic rocks near the top of the sequence, the Auwerwer basalts, dated with K-Ar dating to the Middle to Late Miocene (12.5-10.7 Ma).

Hydrocarbon exploration

Exploration in the basin began with the Loperot-1 well drilled by Royal Dutch Shell in 1992. Some oil was found in thin sand, but the presence of high quality and mature spring rock and reservoir sand of good quality was detected. This phase of exploration ended when the company judged the results to be non-commercial. In 2008, Africa Oil Corp acquired a PSA for the 10BB license over the basin. In 2010, they gave up part of their interest in Tullow, which became the operator. In 2012, drilling commenced on Ngamia-1, which was an important discovery. As a result, eight more discoveries were made, all, like Ngamia, near the basin boundary fault. There are now enough discovered resources for commercial development. The proposed export route for the oil is the Kenya Crude Oil Pipeline.