El Lote 88, "Camisea", is located in the outer Subandean Thrust Belt of the Ucayali Basin, eastern Perú. The structural style is thin-skinned with the lower detachment placed in the Silurian shale. The deformation took place during the tertiary Andean Orogeny. The dominant structures are several kilometers length ramp anticlines. These structures are WNW-ESE trended and around a thousand meters of structural height. These anticlines, that are the main hydrocarbon traps, are interpreted to be generated either by a simple thrust or by a complex thrust system. Altough minor faults propagation anticlines and interference structures are present, they are not important as hydrocarbons traps. The already found hydrocarbon traps are gas filled to their spill points with no oil ring. They belong to Class I in Sales´s Classification. The final geometry of the traps are due to the combination of four main factors: 1.-The original fault bend anticlines geometry. 2.- The imbrications of two o more faults. 3.-Several minor out-of-sequence and accommodation faults developed in the crest of the anticlines. 4.- Sedimentary and stratigraphic elements that generate a NNW-SSE hills and valleys, regularly trended, separated 2 - 3 km each and more than 30 Km in length. These features, with more than 100 m relief, are superimposed to the main geometry deformation.


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