SELECTION OF THE OPTIMAL RESERVOIR OPENING TECHNOLOGYIN DIFFERENT GEOLOGICAL CONDITIONS: A STUDY OF THE PK1-3 FORMATION AT THE VOSTOCHNO-MESSOYAKHSKOYE OIL FIELD

Abstract

The article is devoted to choosing of optimal well technology for PK1-3 formation development of the the Vostochno-Messoyakhskoye oil field in the geological uncertainty condition. The formation has some features. On the one hand there are a gas cap and underlying water in the formation, which require usage of horizontal wells, but on the other hand there is a high dissection of the vertical section, which requires technologies to increase the coverage of reserves drainage in vertical direction. The different scenarios of geology were modelled: different length of geological bodies, different values of sandstone and permeability. Considered technologies are horizontal wells, multilateral wells and wells with technology «fishbone».Applying a comprehensive technical and economic assessment to propose optimal design of wells for different geological zones, to determine the optimal corridor of high-tech wells between the rows of injection wells, the optimal number of lateral well branches and the optimal design of the well with technology of «fishbone».