On the role of the skin factor at sideholes kickoff in conditions of repression and depression on a layer at Surgutneftegaz OAO fields
Authors: R.N. Shamgunov (Surgutneftegaz OAO), A.Yu. Mosunov, M.V. Misharin (SurgutNIPIneft Tyumen branch), E.V. Kulchitskiy (Kuban State Technological University)
The results of operation of sideholes, drilled with the depression on the layer during their kickoff, in comparable geological conditions are given. It is concluded, that the skin factor significantly affects the initial fluid flow rates in horizontal wells and sideholes virtually at all development targets of Surgutneftegaz OAO. The tendency of increasing this effect with the deterioration of reservoirs filtration properties is established. It is noted, that as a result of this the use of completion technology (without subsequent operations of killing of wells) on depression for the individual objects may be the main condition of their profitable development.
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