Small diameter thin-walled continuous tube injecting device

Abstract

The invention relates to a small diameter thin-walled continuous tube injecting device. A wheel disc sleeves on an output shaft, a bearing pedestal is mounted on a base, a chain wheel is mounted at the right end of the output shaft, the lower part of a bracket is fixed on the bearing pedestal, a guide plate is mounted on the upper part of the bracket, a roller is mounted on a follow-up cross beam,the roller can rotate on the follow-up cross beam, a guide slot is formed in the upper section to the guide plate, the follow-up cross beam is placed in the guide slot, limiting caps are mounted at two ends of the follow-up cross beam, a fixed cross beam is mounted at the upper end of the guide plate, a spring shaft penetrates through the fixed cross beam downward and then sleeves on a spring, the lower part of the spring shaft is connected to the follow-up cross beam, an adjusting cap is mounted on the upper part of the spring shaft in a threaded manner, an arc-shaped groove is formed in theroller, the diameter of the arc of the arc-shaped groove is equal to that of a continuous tube, the continuous tube is located in the arc-shaped groove, the continuous tube is pressed to the wheel disc by the roller, and under the action of the spring force, a certain contact force is generated between the continuous tube and the wheel disc, and the wheel disc driven by the chain wheel can injectthe continuous tube into a well during rotation.

Description

technical field [0001] The invention is a supporting device for a heating and viscosity-reducing system of a heavy oil well in an oil field, a device on a small-diameter thin-wall coiled tubing lifting device, and a small-diameter thin-wall coiled tubing injection device. Background technique [0002] There are many heavy oil wells in the oil field, and these heavy oils are pumped out by oil pumps (including rod pumps and rodless pumps). Due to the poor fluidity of heavy oil, large flow resistance, and a large pressure difference between the wellhead and the oil well pump, the oil well pump The discharge pressure of the pumping equipment is high, the load of the pumping equipment is large, the energy consumption is high, the output of the oil well is low, the power consumption is large, and the economic benefit is poor. When the viscosity of the heavy oil is too high, the oil flow channel will be blocked. To solve these problems in oil extraction, it is necessary to heat the...

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Problems solved by technology

[0003] As mentioned above, this heating technology requires the use of small-diameter thin-walled continuous tubing. Its outer diameter is less than Φ25mm, and its wall thickness is less than 2mm. Its rigidity is very poor and it is easy to deform. The equipment that does not damage the oil rod needs to be lifted out, but the existing equipment cannot meet the requirements for it, so that some small-diameter thin-walled continuous pipes are deformed and cannot be lowered, or the flow path becomes smaller and affects hot water. Over-current caused this heating viscosity reduction technology cannot be popularized and applied smoothly

[0004] To this end, technicians have developed small-diameter thin-walled coiled tubing

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