CONNECTOR FOR A FLEXIBLE PIPE WITH THE BOTTOM-HOLE EQUIPMENT Russian patent published in 2022 - IPC E21B17/03 

FIELD: petroleum industry.

SUBSTANCE: invention relates to apparatus for work with flexible metal pipes when drilling a horizontal section of the wellbore of petroleum and gas boreholes. Connector for a flexible pipe with the bottom-hole equipment comprises a body with an internal thread in the lower part for the connection to the bottom-hole equipment. The middle part of the body has annular grooves for sealing rings on the inner surface thereof. An internal conical surface is made in the upper part of the body, with the base of the cone facing up. A spider is placed in the inner conical surface of the body, made in the form of slips located in the gap between the inner conical surface of the upper part of the body and the outer wall of the flexible metal pipe. A rigid metal branch pipe is installed inside the flexible metal pipe. The spider is made in the form of a dovetail joint. Grooves are made on the inner conical surface of the body, wherein the slips are installed configured for limited movement within the grooves. Herewith, the angle of the conical surface of the body to the central axis thereof is 15 °. The inner surface of the slips is made corrugated and quenched. A pressure ring interacting with the upper ends of the slips is secured on the upper end of the body. The pressure ring is equipped with through holes, and threaded holes are made on the upper end of the body for attaching the pressure ring to the upper end of the body with the bolts installed in the through holes of the pressure ring.

EFFECT: structural simplification of the apparatus, higher fixation security of the connection: flexible pipe – connector - bottom-hole equipment, and eliminated restrictions in the passage of the apparatus along the diameter of the wellbore, simplified assembly and disassembly of the apparatus.

1 cl, 3 dwg