Implementation of rotating liner lowering technology in complicated wells of Samaraneftegaz JSC

UDK: 622.245.01

DOI: 10.24887/0028-2448-2026-4-44-49

Key words: complicated conditions, mud losses, wellbore wall stability, complicated wellbore geometry, rotating liner, cemented liner completion, hook weight, torque, inlet pressure, cemented liner hangers with small-size rotation, 102×146 and 114×168 mm dimensions

Authors: R.M. Alimov (Samaraneftegas JSC, RF, Samara); V.A. Kapitonov (Samara branch of RN-Upstream design LLC, RF, Samara; Samara State Technical University, RF, Samara); M.E. Koval (Samara branch of RN-Upstream design LLC, RF, Samara; Samara State Technical University, RF, Samara); R.A. Miklyaev (Samaraneftegas JSC, RF, Samara); E.Yu. Pilipets (Rosneft Oil Company, RF, Moscow)

Drilling wells in the Volga-Ural oil and gas province often involves drilling through intervals prone to caving and catastrophic mud losses. Despite successful mitigation of these challenging zones, this impacts wellbore quality and complicates casing running. Samaraneftegaz JSC and other Rosneft Group companies are constantly searching for new technologies to improve the efficiency of their operations. These include the use of a rotating liner during downhole operations, followed by cementing. This article provides an overview of devices for disconnecting the transport string from the liner: threaded and threadless (cam, lock and pin). Their operating principles and cementing procedures are described. As an example, a geological stratigraphic section and profile of a directional well at the Gazelnoye field are considered. Challenges encountered during liner drilling are described, including the failure of the drilling tool to move without rotating flushing, which resulted in the excessive removal of mudstone. The article briefly discusses liner assembly and preparation. It also provides technical details of the operations performed during liner rotation and the liner activation procedure. Graphical plots of hook weight, torque, and inlet pressure versus wellbore depth during the operation are presented. A description of how to disconnect the installation tool from the hanger and cement the liner is provided. A conclusion is drawn regarding the potential of using a rotating liner hanger packer within the 168×114 and 146×102 mm dimensions.

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