Rotating impact acceleration device and method of power drilling tool

A technology of power drilling tools and impact hammers, which can be applied to the driving device for drilling in boreholes, drilling equipment, earthwork drilling and production, etc. It can solve the problems of inability to match power drilling tools, unaffordable speed-up tools, and failure to cause downhole accidents, etc. , it is easy to adjust the impact amplitude, it is beneficial to work for a long time, and it is beneficial to transportation and use

CN104847259AActive Publication Date: 2015-08-19CHINA UNIV OF PETROLEUM (EAST CHINA)
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2015-08-19

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Abstract

The invention relates to a rotating impact acceleration device and a method of a power drilling tool. The device is characterized in that a rotor transmission shaft, a driving tooth-shaped impact hammer and a driven impact transmission joint are mounted at the inner side of a stator outer cylinder; the lower end of the rotor transmission shaft is in threaded connection with the driven impact transmission joint; the middle part of the rotor transmission shaft and the middle part of the stator outer cylinder are formed to a cylindrical cavity; an impact force accumulating spring is mounted in the cavity; the lower end of the impact force accumulating spring fits the driving tooth-shaped impact hammer; a tooth-shaped curved surface is arranged at the lower end of the driving tooth-shaped impact hammer, and is engaged with a tooth-shaped curved surface at the upper end of the driven impact transmission joint; the driven impact transmission joint is driven by the rotor transmission shaft to generate a rotating motion corresponding to the driving tooth-shaped impact hammer; and the driving tooth-shaped hammer and the impact force accumulating spring generate axial reciprocating impact on the driven impact transmission joint to realize the rotation and the impact. The device is simple in structure and shorter in length, and dose not influence the operations of the power drilling tool and a measuring tool while drilling.
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Description

technical field

[0001] The invention relates to the field of petroleum engineering, in particular to a device and method for speed-increasing by rotary impact of a power drilling tool. Background technique

[0002] Directional wells are currently the most important well type for oil and gas field development. However, as the depth of oil and gas reservoirs continues to increase, the problem of slow drilling speed becomes more prominent. How to increase the speed in directional wells is one of the important research directions of petroleum engineering technology. The following problems exist in the speed-up in directional wells: (1) The drill bit is directly connected to the power drilling tool, and long-sized speed-up tools cannot be added in between; (2) The work of the speed-up tool cannot affect the use of the measurement-while-drilling tool; (3) The service life of the tool should not be too short , at least similar to the life of the power drilling tool; (4) When th...

Examples

Embodiment Construction

[0032] Such as figure 1 , figure 2 , image 3 As shown, the rotary impact acceleration device for power drilling tools mentioned in the present invention includes a stator outer cylinder 1, a rotor transmission shaft 2, an impact storage spring 3, an active toothed impact hammer 5, and a passive impact transmission joint 6.

[0033] Such as Figure 4 As shown, the outside of the stator outer cylinder 1 is a cylindrical surface of equal diameter, and the inside is sequentially from top to bottom a power drilling tool casing connecting buckle 101, a transmission shaft support surface 102, a transmission shaft anti-off end surface 103, and a transmission shaft support surface. 104, the spring supporting surface 105, the spring outer cylinder 106, the twisting surface 107, the rotating sealing end surface 108; the power drilling tool casing connecting buckle 101 is used to connect the power drilling tool casing; the outer diameter of the transmission shaft supporting surfac...