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Hydraulic jetting drilling-well shower nozzle

A technology of hydraulic jetting and nozzles, which is applied in the direction of drilling with liquid/gas jetting, which can solve the problems of small hole diameter and inability to form nozzles, and achieve the effects of fast rock breaking speed, prevention of undercutting, and high wear resistance

Active Publication Date: 2013-05-22
DAQING JINGTAI PETROLEUM ENG TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a hydraulic jet drilling nozzle to solve the above problems, and to solve the problem that the current nozzle used by hydraulic jetting has a small hole diameter and cannot form a large hole.

Method used

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  • Hydraulic jetting drilling-well shower nozzle
  • Hydraulic jetting drilling-well shower nozzle
  • Hydraulic jetting drilling-well shower nozzle

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Experimental program
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specific Embodiment approach

[0025] Five, specific embodiment: the present invention will be further described below in conjunction with accompanying drawing:

[0026] figure 1 is an overall schematic diagram of the present invention, figure 2 It is a bottom view of the present invention, image 3 is a longitudinal sectional view of the present invention, Figure 4 It is the side development view of the side hole of the present invention, combined with figure 1 , figure 2 , image 3 , Figure 4 As shown, the hydraulic jet drilling nozzle includes a nozzle body 1. There is a water outlet hole on the nozzle body 1, and there are longitudinally arranged water outlet channels connected to the water outlet holes. The nozzles are built in the water outlet channels, and the nozzles play the role of pressurizing the water column. The nozzle body 1 is conical with a flat end at the front end. The flat end is to provide a certain wall thickness for the nozzle in the nozzle body 1, so as to prevent the refle...

Embodiment 1

[0036] The hydraulic jet drilling sprinkler head includes a nozzle body 1. There is a water outlet hole on the nozzle body 1, and there are longitudinally arranged water outlet channels inside to communicate with the water outlet holes. Nozzles are built in the water outlet channels. The nozzle body 1 is conical with a flat end at the front end. The water outlet hole includes a middle hole 2 and six side holes 3, the middle hole 2 is located on the flat end of the front end of the nozzle body 1, the six side holes 3 are located on the conical slope of the nozzle body 1, and the side holes 3 are centered on the middle hole 2. The centers are arranged radially. The water outlet channel of the middle hole 2 is in the same direction as the nozzle axis, and the water outlet channel of the side hole 3 is inclined 5° along the tangential direction, forming a clockwise inclination angle, and the inclination direction of the water outlet channel of the side hole 3 is consistent. The w...

Embodiment 2

[0038] The hydraulic jet drilling sprinkler head includes a nozzle body 1. There is a water outlet hole on the nozzle body 1, and there are longitudinally arranged water outlet channels inside to communicate with the water outlet holes. Nozzles are built in the water outlet channels. The nozzle body 1 is conical with a flat end at the front end. The water outlet hole includes a middle hole 2 and six side holes 3, the middle hole 2 is located on the flat end of the front end of the nozzle body 1, the six side holes 3 are located on the conical slope of the nozzle body 1, and the side holes 3 are centered on the middle hole 2. The centers are arranged radially. The water outlet channel of the middle hole 2 is in the same direction as the nozzle axis, and the water outlet channel of the side hole 3 is inclined 8° along the tangential direction, forming a clockwise inclination angle, and the inclination direction of the water outlet channel of the side hole 3 is the same. The...

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Abstract

The invention discloses a hydraulic jetting drilling-well shower nozzle, which comprises a shower nozzle body (1), wherein the shower nozzle body (1) is provided with water outlets; water delivery paths are longitudinally arranged in the shower nozzle body (1) and are communicated with the water outlets; nozzles are built in the water delivery paths; the shower nozzle body (1) is in taper shape of which the front end is a flat end; the water outlets comprise a middle hole (2) and side holes (3), wherein the middle hole (2) is positioned at the flat end of the front end of the shower nozzle body (1); the side holes (3) are positioned on the taper-shaped inclined surface of the shower nozzle body (1) and are radially arranged by taking the middle hole (2) as the center; the water delivery path of the middle hole (2) is same with the axis direction of the shower nozzle; and the water delivery paths of the side holes (3) respectively incline for 5-15 degrees along the tangent direction and have the same inclination direction. When being used, the hydraulic jetting drilling-well shower nozzle is slowly fed in while spraying, a pore-forming of which the diameter is 120-130mm can be formed, and the joint of the shower nozzle and a steel pipe can be effectively prevented from backing off in the hydraulic jetting process.

Description

technical field [0001] The invention relates to a hydraulic jet tool for well drilling, in particular to a hydraulic jet drilling nozzle. Background technique [0002] A horizontal well refers to a well whose inclination angle reaches or is close to 90°, and the wellbore is drilled to a certain length along the horizontal direction. Generally speaking, horizontal wells are suitable for thin oil and gas layers or fractured oil and gas reservoirs, with the purpose of increasing the exposed area of ​​oil and gas layers. Horizontal well drilling technology refers to the directional drilling technology that uses special bottom-hole power tools and measurement-while-drilling instruments to drill a well with an inclination angle of 90° or close to it, and maintains this angle to drill a certain length of well section, including measurement-while-drilling technology. , Wellbore trajectory control technology, wellbore stabilization technology, drilling and completion fluid technolog...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B7/18
Inventor 张亚胜张朝纯
Owner DAQING JINGTAI PETROLEUM ENG TECH
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