Some aspects relating to completion of horizontal wells with open well bottoms in terrigene collectors of the Western Siberia
The paper presents different approaches to substantiation of wells design without casing of a horizontal sector by a casing string (liner). The problem of determination of stability limiting conditions of horizontal wells non-cased by a drill-pipe casing string for the Western Siberia fields in the whole remains open and requires an individual approach through conducting of field tests in any particular case. Monitoring of multilateral wells (MLW) operations indicates that the ratio of MLW and horizontal wells (HW) flow rates is preserved for a long period of time (more than 2...3 years). Consequently, in case of maintenance of a gentle operational mode there exists some possibility of non-casing of wells horizontal sectors at some separate operational objects of Western Siberia fields, for example, when implementing the technology of well multilateral completion.