FIELD: construction.
SUBSTANCE: invention relates to technology of oil and gas wells drilling, namely, to wedge-free methods of multibranch well drilling. Method includes drilling of the main shaft and additional shafts by a package with curved adapter, creation of expanded section in the main shaft, besides, drilling of additional shafts is carried out from ledge of expanded section.
EFFECT: invention makes it possible to reliably drill multibranch wells in resistant rocks, to reduce time for lifting and lowering operations due to reduction of their number, and also to increase oil recovery of open payout beds of multibranch well due to increased surface of filtration with additional shafts.
2 dwg
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