MULTIPLE DRILLING RIG WITH SIMPLIFIED LAYOUT OF ASSEMBLY Russian patent published in 2011 - IPC E21B7/02 

FIELD: oil and gas production.

SUBSTANCE: multiple drilling rig consists of units made in form of modules including frames with process equipment, unit of well cementing, unit of circulation system, pump unit with drill pumps, unit of electrical equipment, compressor unit, and also derrick-hoist unit and receive bridge with drilling pipes mounted on guides for horizontal transfer. The rig is composed of two rows on 4 parallel guides. Also, the units-modules are connected with a system of communication and can change their relative position. The receiving bridge with drilling pipes is set in space between rows and is connected with the derrick-hoist unit. The latter is mounted on internal guides and can be retracted beyond overall line of the assembly formed with units-modules. This layout reduces area for drilling rig maintenance and communications between units-modules.

EFFECT: installation of additional shelters for heating working areas; reduced heat losses from shelter surface; raised efficiency of rig operation.

5 cl, 5 dwg