Combined sand-washing well repairing machine

Abstract

The invention relates to a vehicle-mounted petroleum workover rig, in particular to a combined sand removal workover rig, which is particularly applicable to sand removal operation of a screw pump viscous oil well and simultaneously is applicable to the sand removal operation of common oil wells and workover operation of rated hook load with 15 tons. The workover rig comprises a vehicle-mounted chassis and a vehicle-mounted derrick. The vehicle-mounted chassis is provided with a sand removal pump, a solution tank and a winch; and the sand removal pump is connected with the solution tank, thus realizing multiple functions with one machine and continuous operation. The equipment is used for sand removal operation of the screw pump viscous oil well, can replace a traditional crane, a well-flushing vehicle and a pumper, realizes multiple functions with one machine, improves the efficiency, reduces the equipment and reduces the workover cost. The equipment is provided with a hoisting system, thus not only being capable of carrying out broken down operation of sand removal but also being capable of carrying out minor overhaul operation of rated load with 15 tons. The derrick adopts a self-rendering structure of a long and diagonal draw bar so as to lead the equipment not only to be capable of carrying out operation on a vertical well but also to be capable of carrying out operation on a deviated well with the angle of more than 45 degrees. The equipment has flexible operation and is energy-saving and oil-saving.

Description

technical field [0001] The invention relates to a vehicle-mounted petroleum workover rig, which is a combined sand washing and workover rig. It is especially suitable for the sand washing operation of the screw pump type heavy oil well, and it is also suitable for the sand washing operation of the ordinary oil well and the workover operation with a rated hook load of 15 tons. Background technique [0002] In the existing technology, sand washing pump trucks, solution tank trucks and cranes (mainly used to lift the screw pump rotor) are often used in oil field workover and sand washing operations. The three trucks are independent and used in conjunction. The disadvantages are that there are many equipments and high costs. Low efficiency; the angle of the vehicle-mounted derrick cannot be adjusted after it is erected, and it is usually only suitable for vertical wells with a narrow range of application. Contents of the invention [0003] The object of the present invention ...

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Problems solved by technology

[0002] In the existing technology, sand washing pump trucks, solution tank trucks and cranes (mainly used to lift the screw pump rotor) are often used in oilfield workover and sand washing operations. The three trucks are independent and used in conjunction. The disadvantages are that there are many equipments and high costs. Low efficiency; the angle of the vehicle-mounted derrick cannot be adjusted after it is erected, and it is usually only suitable for vertical wells, and the scope of application is narrow

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