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Rotary self-advancing hybrid jet drill with cutting ribs

A technology for cutting wings and drill bits, which is applied in construction and other directions, to achieve the effect of simple structure, guaranteed reliability and fewer components

Inactive Publication Date: 2019-05-14
SOUTHWEST PETROLEUM UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention proposes a rotary self-propelled mixed jet drill with cutting wing ribs, which solves the defects of the jet drill in the prior art

Method used

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  • Rotary self-advancing hybrid jet drill with cutting ribs
  • Rotary self-advancing hybrid jet drill with cutting ribs
  • Rotary self-advancing hybrid jet drill with cutting ribs

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Embodiment Construction

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0030] like figure 1 As shown, a rotary self-propelled mixed-jet drill bit with cutting ribs of the present invention includes a drill body 1 , a rotating housing 2 , and a positioning nut 3 .

[0031] The drill body 1 is a hollow cylindrical body with variable diameter, and the front end of the drill body is a central nozzle 17 with a mixing chamber. The rear end surface of the diameter-reducing cylinder is processed with threads, and is connected with a high-pre...

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Abstract

The invention relates to a rotary self-propelled mixing jet bit with cutting wing ribs, and the rotary self-propelled mixing jet bit is applied to well drilling of a hydraulic jet radial horizontal well. The rotary self-propelled mixing jet bit comprises a bit body, a rotary shell and a positioning nut; the rear end of the bit body is provided with a hollow variable diameter cylinder, and the front end of the bit body is provided with a central nozzle with a mixing cavity; the hollow cylinder arranged at the rear end of the bit body is provided with first-level backward nozzles, multiple forward holes are formed in a hollow cylinder arranged at the front end of the bit body, and flow guiding valves are installed in the forward holes; the central nozzle is coaxial with a flow channel of the bit body, a thread is formed on the exterior of the central nozzle, and the rotary shell is positioned through the positioning nut; forward nozzles facing laterally and forwards are arranged at the front end of the rotary shell, the outer wall of the rotary shell is provided with the spiral cutting wing ribs, hard alloy cutting teeth are fixedly arranged on the surfaces of the cutting wing ribs, and second-level backward nozzles are arranged in flow guiding grooves formed among the cutting wing ribs. According to the rotary self-propelled mixing jet bit with the cutting wing ribs, the problems that in the hydraulic jet radial horizontal well drilling process, the mechanical drilling rate is low, the well diameter is small, and well holes are irregular.

Description

technical field [0001] The invention relates to the field of drill bit devices used for hydraulic jet radial horizontal well drilling, in particular to a rotary self-propelled mixed jet drill bit with cutting ribs. Background technique [0002] With the deepening of exploration and development of oil and gas resources, many oil fields have entered the middle and late stages of development, and the type of oil and gas resources has gradually changed from conventional to unconventional. The field of oil and gas exploration and development has gradually expanded to include low porosity, low permeability, complex small Oil reservoirs, local remaining oil reservoirs, and unconventional oil reservoirs such as coalbed methane, shale gas, and tight sandstone gas. The hydraulic jet radial horizontal well technology uses high-pressure water jets to drill one or more horizontal branch boreholes in one or more layers in the vertical wellbore, realizing "one well with multiple layers, on...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B10/43E21B10/61
CPCE21B10/43E21B10/61
Inventor 王国华秦大伟熊继有谭军邓丽
Owner SOUTHWEST PETROLEUM UNIV
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