| 摘要 |
FIELD: oil and gas industry. ^ SUBSTANCE: invention is related to works in well, namely, to method and versions of device for items transportation, in particular, instruments on cable in horizontal wells. Method for creation of tractive force in well, in which well tractor is used with supports that interact with well walls, and vibration exciter, well tractor body vibrations are created along well, vibrations are sent to wheel and/or lever supports pressed to wheel walls. Supports are arranged so that they prevent displacements of well tractor in direction opposite to required direction of motion in well. Wheel-support well tractor includes body, mechanisms for wheels pressing/release to well walls, wheels pressed to well walls, at least one vibration exciter, at least one unit of elastic mechanical and elastic electric connection to transported devices. Wheels are equipped with mechanisms that block rotation of wheels to the side that does not correspond direction of motion in well. Lever-support well tractor includes body, mechanisms for opening/closure of lever supports and lever supports, at least, one vibration exciter. Lever supports are arranged so that with their one end they are hingedly fixed to body, and with their other end they rest against well walls during opening in spring manner. All supports form sharp angles with body axis - angles of supports opening directed with their tops to one side, or tractor has two sets of supports with opening angles directed with their tops in opposite sides. Tractor also comprises at least one unit of elastic mechanical and elastic electric connection with transported devices. ^ EFFECT: expansion of technical facilities arsenal for instruments delivery to wells, increased efficiency and reduced technical complexity of well tractors. ^ 4 cl |
