Carbon fiber hollow heating rod column

Abstract

The invention discloses a carbon fiber hollow heating rod column which comprises a plurality of carbon fiber hollow sucker rods and a metal hollow double-end joint. Each carbon fiber hollow sucker rodcomprises a metal joint, an adhesive, a seal ring and a carbon fiber hollow pipe. One end of each metal joint is bonded to the outer side of one end of the corresponding carbon fiber hollow pipe through the adhesive, an inner thread is arranged at the other end of each metal joint, outer threads adaptive to the inner threads of the metal joints are arranged on the outer sides of two ends of the metal hollow double-end joint, two ends of the metal hollow double-end joint are in threaded connection to the metal joints at one ends of the two carbon fiber hollow pipes, and each seal ring is arranged at the end, bonded to the pipe wall of the corresponding carbon fiber hollow pipe, of the corresponding metal joint. The carbon fiber hollow heating rod column has the beneficial effects that thecarbon fiber hollow sucker rods are connected and communicate through the metal hollow double-end joint, so that the problem that the using effect of the carbon fiber hollow sucker rods is affected directly in use of the carbon fiber hollow sucker rods as a result of wax precipitation or viscosity in an oil well is solved, the oil suction efficiency is improved, and the replacement and maintenancecosts are lowered.

Description

technical field [0001] The invention relates to the technical field of oilfield exploitation, in particular to a carbon fiber hollow heating rod column. Background technique [0002] At present, the mechanical oil recovery commonly used in major oil fields at home and abroad is the rod oil recovery system. As most of the major oil fields in my country have entered the middle and late development stages, the water content of crude oil has increased, the dynamic fluid level has decreased, and the downhole medium corrosion has intensified. As the proportion of oil wells increases, the existing conventional beam pumping units, conventional steel sucker rods and pumps can no longer adapt to the oil production system. For this reason, our company has successfully developed the carbon fiber continuous sucker rod. In the use of carbon fiber continuous sucker rods, it is found that when the crude oil in the oil well is waxy or viscous, it will directly affect the use effect of carbon...

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Problems solved by technology

[0002] At present, the mechanical oil recovery commonly used in major oil fields at home and abroad is the rod oil recovery system. As most of the major oil fields in my country have entered the middle and late stage of development, the water content of crude oil has increased, the dyn

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