Oil production in unconsolidated reservoirs such as sandstone can be really challenging because of solids coming from the formation. In order to solve problems caused by produced solids, frac-packing is one of the methods used. It aims to maintain or increase production and control produced solids. This research focuses on the hydraulic fracturing part of that method. A numerical model is created using CMG-2015 with data from a given field to analyze the effects of some factors on oil production. Two cases are considered in this research, the first one is a one-layer case and the second one is a two layers case. Water is injected into the reservoirs in both cases. The results reveal that formation damage by its degree (Ks/K) and size can significantly decrease oil production and fracturing treatment can help recover the oil production to almost the initial value. After bypassing the damaged area, keeping increasing fracture half-length and conductivity is not important because there is no significant effect on the production. The results also show that for double layers case, the best way to increase oil production is to fracture the low permeability layer and maintain or leave the formation damage that will naturally happen.

In order to better constrain the utility of multispectral datasets in the characterization of surface materials, Landsat 8 data were evaluated in the discrimination of geological classes in KISANTU and its vicinity. Ground-based measurements collected from the study area highlight the importance of limestone in that area. The spatial distribution of exposed lithologies in the study area was determined through an image resulting from a band ratio (band 7/band 6) that shows the distribution of clays coming from the alteration of the rocks below; and another image using a band ratio transform (band 6/band 7) to identify limestone. Despite some shortcomings coming from the unsupervised classification, the merging of band ratio and the principal component analyze gives an overall representation of the spatial distribution of exposed geological materials in the study area.

Oil blocks have been delimited by parallels and meridians squares since years up to now in DRC. This technics is not suitable and common, that is why in order to better limit the different oil blocks in the West-Congolian sedimentary basin, we used the Lansat 8 data to bring out lineaments which help to set geological structural model. Lineaments probably coming from tectonic movements have been identified throughout the surface of lithological units in the West-Congolian basin. The principal component analysis, the band ratio and some filterings helped to get more details about that. Data coming from existing maps combined with groundtruth data have been compared to teleanalytic data.