Публічне Акціонерне Товариство "Державне Акціонерне Товариство "Чорноморнафтогаз"
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Priority to UAU201401063UpriorityCriticalpatent/UA91576U/en
Publication of UA91576UpublicationCriticalpatent/UA91576U/en
Drilling And Exploitation, And Mining Machines And Methods
(AREA)
Abstract
A method for construction of well group at sea includes laying of well group with use of block-conductor in sea, connection of drilling equipment to it, drilling the first vertical well, its secondary opening and bringing to operation with extraction of product, displacement of drilling equipment on block-conductor for drilling the next well, with repeating operations for bringing it into operation with extraction of product, sequential similar drilling and brining into operation of the next N wells of the group. At drilling the first vertical well density of drilling solution is determined by initial strata pressure. Drilling of the second and each following inclined or horizontal well from the roof of the productive bed to designed length of the well is carried out with use of drilling solution with lower density compared to that for the previously drilled well.
UAU201401063U2014-02-042014-02-04Method for construction of a well cluster on the sea
UA91576U
(en)
apparatus for penetrating a predetermined range of a watertight reservoir rock formation adjacent to a wellbore and method for sequentially performing a plurality of penetrations