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Hydraulic oscillator for directional drilling operation

A hydraulic oscillator and directional drilling technology, applied in directional drilling, drilling with vibration, etc., can solve the problems of fast oscillation frequency, small oscillation amplitude, instability, etc., and achieve slow oscillation frequency, stable oscillation amplitude and period, and long service life. prolonged effect

Pending Publication Date: 2019-12-13
上海达坦能源科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a hydraulic vibrator for directional drilling operations, which solves the defects of the traditional hydraulic vibrator that the vibration frequency is too fast, the vibration amplitude is small and unstable

Method used

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  • Hydraulic oscillator for directional drilling operation
  • Hydraulic oscillator for directional drilling operation
  • Hydraulic oscillator for directional drilling operation

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Embodiment Construction

[0022] The application will be described in further detail below in conjunction with the accompanying drawings. It is necessary to point out that the following specific embodiments are only used to further illustrate the application, and cannot be interpreted as limiting the protection scope of the application. The above application content makes some non-essential improvements and adjustments to this application.

[0023] combine Figure 1 to Figure 4 As shown, a hydraulic vibrator for directional drilling operations consists of a power sub-section and a vibrating sub-section.

[0024] Among them, the power short joint includes a power casing 1, a bearing 2, a rotating shaft 3, a blade 4, a connecting frame 5, a rotating cylinder and a piston 6, and the rotating shaft 3 is movably connected in the power casing 1 through a bearing 2, and some water-permeable holes are provided on the bearing 2 (not shown in the figure), used for the circulation of drilling fluid; the blades 4...

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Abstract

The invention discloses a hydraulic oscillator for directional drilling operation. The oscillator is composed of a power sub and a vibration sub, wherein the power sub comprises a power shell, a bearing, a rotating shaft, a blade, a connecting frame, a rotating cylinder and a piston, and the vibration sub comprises a sliding sleeve, a sliding shaft, a connecting sleeve and a disc spring. The oscillator has the advantages that the rotating cylinder structure is adopted to directly push the vibration sub to perform periodic reciprocating vibration, compared with a traditional driving mode utilizing hydraulic pressure changes, the oscillation frequency is slowed down, the oscillation amplitude and period are stabler, the influence of high-frequency vibration on an underground high-precision instrument is effectively avoided, the overall working stability of a drilling tool is guaranteed, in addition, a drilling fluid does not scour damageable parts of the hydraulic oscillator during use of the hydraulic oscillator, the damageable parts comprise a rolling wheel, the disc spring and the like, and the service life of the oscillator is effectively prolonged.

Description

technical field [0001] The invention relates to the technical field of drilling equipment, in particular to a hydraulic oscillator used for directional drilling operations. Background technique [0002] During the directional drilling operation, the drilling tool assembly or the drill pipe is in contact with the well wall, resulting in a large frictional resistance between the drilling tool and the well wall, which increases the loss in the process of drilling pressure transmission and reduces the drilling efficiency; As the horizontal section is lengthened, there are more and more phenomena of depressurization, adhesion, and tool loss, which greatly limit the drilling speed and restrict the extension of the horizontal section length. Therefore, how to reduce resistance, realize rapid drilling and increase the length of the horizontal section of the well Has become the focus of attention of the industry. Under the action of hydraulic force, the hydraulic oscillator can gene...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B7/04E21B7/24
CPCE21B7/04E21B7/24
Inventor 向长树
Owner 上海达坦能源科技股份有限公司
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