Spraying pipe for hydraulic deep-penetrating drilling

Abstract

The invention relates to a spraying pipe for hydraulic deep-penetrating drilling. The spraying pipe sequentially comprises an inner rubber layer, a steel wire winding layer, a middle rubber layer, an oil immersion fabric layer and a metal-armour-protection outer layer from inside to outside in the radial direction. The spraying pipe for hydraulic deep-penetrating drilling is high in strength and large in rigidity, the axial thrust and the rotation torque can be provided, the reliability and the applicability of the hydraulic deep-penetrating technology are enhanced, the structure is reasonable, and the spraying pipe is suitable for the hydraulic deep-penetrating drilling technology; under the high-pressure jet flow effect, additional rotation spraying and the composite boosting effect can be overlaid, the rock breaking problem of a hard stratum can be solved, the capacity of a hydraulic spraying tool is improved, and the requirements of practical applications can be well met.

Description

technical field [0001] The invention belongs to the technical field of hydraulic deep penetration drilling equipment, and in particular relates to a nozzle for hydraulic deep penetration drilling. Background technique [0002] Radial jet drilling technology is a new technology developed in recent years for oil layer stimulation and production increase. The principle of the process is to use a nozzle with a nozzle to drill multiple small holes in different directions in the oil layer with the help of the hydraulic rock breaking effect of the high-pressure jet. The holes penetrate the pollution zone laterally and increase the discharge radius of the original hole And discharge area, so as to achieve the purpose of reducing oil flow resistance and increasing production. [0003] Nozzle is one of the key tools of hydraulic deep penetration technology. In order to adapt to the working conditions of high-pressure water jets, the current nozzle uses a high-pressure steel wire wou...

AI Technical Summary

Problems solved by technology

Due to the lack of rigidity of the nozzle, during the jet operation in the oil well, it is subject to harsh working conditions such as extrusion, entanglement, high-pressure impact, bending pulse, etc., which is easy to twist and hang, the nozzle is easily damaged and broken, and the nozzle fails , resulting in frequent tripping out of the drill to replace the injection hose, and low operating efficiency

At the same time, the structure of this kind of rubber hose can not bear the torque, nor can it bear the thrust. In the hard formation, it is easy to cause the consequences of being unable to inject and fail the operation.

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