Wheel-type coiled tubing injection device

Abstract

The invention relates to a wheel-type coiled tubing injection device comprising an injection wheel provided with a horizontal rotary shaft. The injection wheel is rotatably disposed on an injection wheel support and driven by a transmission mechanism. The peripheral surface of the upper portion of the injection wheel is provided with a plurality of fixed bearings at intervals; the fixed bearings are fixed on the injection wheel support; the bottom of each fixed bearing is away from the peripheral surface of the injection wheel by a certain distance; a clamp wheel support is connected to the bottom of each fixed bearing through a clamping hydraulic cylinder; a clamp wheel is pivoted to each clamp wheel support; rotary shafts of the clamp wheels are parallel to the rotary shaft of the injection wheel. A coiled tube wound on a drum is wound on the injection wheel and pressed onto the surface of the injection wheel by the clamp wheels. The injection wheel is simple in structure, the whole structure of the injection device is simplified, and manufacture cost of the injection device is reduced. The injection wheel has a guide function; guide and injection functions are combined; field installation of an injection mechanism and a guide mechanism is avoided; construction efficiency is improved.

Description

technical field [0001] The invention relates to a coiled tubing injection device used for operations such as drilling, workover, oil testing, oil and gas production, and in particular to a wheeled coiled tubing injection device. Background technique [0002] Coiled tubing equipment is widely used in drilling, workover, oil testing, oil and gas production, stimulation and well completion. Such as image 3 As shown, the commonly used coiled tubing injection equipment 9 is mainly composed of a drum 91 for storing coiled tubing 94, a coiled tubing injection mechanism 92, a guide mechanism 93, a power system and a control system 95, and a truck-mounted crane for installing the injection mechanism and the guide mechanism. Machine (not shown in the figure) and other equipment, the above-mentioned special equipment is installed on the special chassis 96 or trailer to form a complete set of coiled tubing equipment that can be easily transported. The main function of the equipment is...

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a wheel-type coiled tubing injection device to simplify the structure of the coiled tubing injection device and reduce the manufacturing cost of the injection device; to use the guiding function of the injection wheel to solve the problems caused by the existing coiled tubing injection equipment. The mechanism and the injection mechanism are separated, and the injection mechanism and the guide mechanism need to be installed on site during the operation, which affects the working time.

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