FIELD: drilling equipment of high cross-country capability designed for deep drilling, servicing and repair of wells. SUBSTANCE: mobile drilling rig includes chassis, derrick, gear to raise derrick to vertical working position, supporting jacks. Derrick is separable and is joined to cantilevered platform hinged to frame by means of three catchers of hook-loop type for orientation and fixation of derrick which disengage when derrick is installed vertically on ground. EFFECT: reduced time and labor input into assembly/disassembly of derrick, enhanced reliability of structure in process of operation. 9 cl, 6 dwg
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