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Jet drilling spray nozzle

A sprinkler and jet technology, which is applied in drilling with liquid/gas jets, etc., can solve the problems of inability to achieve good rock breaking effect by injection, unable to form spray distance and footage, unable to apply radial drilling, etc., so as to improve perforation efficiency, Improve rock breaking effect and simple structure

Inactive Publication Date: 2015-08-12
JEREH ENERGY SERVICES
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the nozzles used for radial drilling at home and abroad are mainly straight-jet nozzles. The main principle of rock breaking is impact crushing. Influence, this kind of sprinkler can't achieve good jet rock breaking effect in hard stratum and hard coal seam
[0003] At present, the self-rotating nozzles existing at home and abroad have the main rock-breaking principles of shearing, striking and stretching. The self-rotating nozzle can greatly reduce the threshold pressure of hydraulic rock breaking, but the current self-rotating nozzle has relatively Insufficient, the length of the nozzle is too long, it is impossible to form a turn in the casing, the thrust is insufficient, it is impossible to form an effective spray distance and footage, it is easy to lose rotation after encountering obstacles, and even pressure relief and other problems are still in the theoretical research stage. Applications and radial drilling

Method used

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Embodiment Construction

[0020] The jet drilling sprinkler head of the present invention, as Figures 1 to 2 As shown, the nozzle body 1 is included, and the nozzle hole group 2 is arranged on the top of the nozzle body 1 .

[0021] The orifice group 2 includes a plurality of jet orifices 21 uniformly distributed on the same circumference and arranged obliquely. The angle between each jet orifice 2 in the orifice group 2 and the axis of the nozzle body 1 is the same

[0022] A plurality of nozzle hole groups 2 are arranged concentrically, arranged sequentially from the center of the circle to the circumference. The jet nozzle holes 21 of adjacent nozzle hole groups 2 are arranged alternately.

[0023] The top of the nozzle body 1 is hemispherical. A V-shaped ring groove 3 is provided on the outer wall of the middle part of the nozzle body 1 .

[0024] A plurality of downwardly inclined rear spray holes 4 are arranged on the upper side wall 31 of the V-shaped ring groove 3, and the rear spray holes...

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Abstract

A jet drilling spray nozzle comprises a spray nozzle body. A spray hole set is formed in the top of the spray nozzle body and comprises a plurality of jetting spray holes evenly distributed in the same circumference and obliquely arranged. The jet drilling spray nozzle is simple in structure and small in size, radial water conservancy jetting operation can be easily performed through an underground guiding tool, and the jet drilling spray nozzle can also be applied to cleaning and plugging a capillary tube. Due to the arranged spray hole set, spiral jetting is formed in a hole channel, the effects of forming striking breakage, shearing breakage and stretching breakage are formed, the rock breaking angle and the rock breaking range are increased, the rock breaking effect is improved, the reacting force in the axial direction is greatly reduced, and the self-advancing capacity of the spray nozzle is improved.

Description

technical field [0001] The invention relates to the field of petroleum industry, in particular to a jet drilling spray nozzle for radial drilling hydraulic injection. Background technique [0002] At present, the nozzles used for radial drilling at home and abroad are mainly straight-jet nozzles. The main principle of rock breaking is impact crushing. Influence, this kind of sprinkler can't achieve good jet rock-breaking effect in hard stratum and hard coal seam. [0003] At present, the self-rotating nozzles existing at home and abroad have the main rock-breaking principles of shearing, striking and stretching. The self-rotating nozzle can greatly reduce the threshold pressure of hydraulic rock breaking, but the current self-rotating nozzle has relatively Insufficient, the length of the nozzle is too long, it is impossible to form a turn in the casing, the thrust is insufficient, it is impossible to form an effective spray distance and footage, it is easy to lose rotation ...

Claims

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Application Information

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IPC IPC(8): E21B7/18
CPCE21B7/18
Inventor 李耀广康健利栾正廷刘明莉
Owner JEREH ENERGY SERVICES
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