Rock debris cleaning device for drilling tool
A cleaning device and cuttings technology, which is applied in drilling tools, drilling equipment, earthwork drilling and production, etc., can solve the problems of low cleaning efficiency of boreholes, achieve efficient removal of cuttings, efficient removal, and prolong service life
Inactive Publication Date: 2014-09-17
NORTHEAST GASOLINEEUM UNIV
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Problems solved by technology
[0011] The object of the present invention is to provide a cuttings cleaning device used on a drilling tool, which is used to solve the problem of low cleaning efficiency of the existing complex structure wellbore
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[0039] Below in conjunction with accompanying drawing, the present invention will be further described:
[0040] Such as figure 1 As shown, the cuttings cleaning device used on this drilling tool is made of a thick-walled steel pipe blank with non-uniform diameters, which mainly includes an upper reaming protector 4, a rotation speed increaser 3, and a lower reaming protector 2. Consists of an unmachined body part. combine figure 2 As shown, the main body 7 is a thick-walled steel pipe with the same internal diameter and through-through. The body 7 is used to process the rotary speed increaser 3, the lower reaming protector 2, and the upper reaming protector 4. Part of the pipe wall thickness is larger than the rest. The reaming protector 2 and the upper reaming protector 4 are advisable, and the wall thickness of the rest of the body 7 is relatively thin. One end of the body 7 is a male joint 1, and the other end of the body 7 is a female joint 6. Both the male joint 1 a...
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The invention relates to a rock debris cleaning device for a drilling tool. The rock debris cleaning device for the drilling tool consists of a body, a rotating speed increaser and reaming protectors, wherein the body is a round steel pipe; an upper reaming protector, the rotating speed increaser and a lower reaming protector are arranged on an outer wall of the body; the rotating speed increaser is positioned between the upper reaming protector and the lower reaming protector; the rotating speed increaser consists of spiral blades and a debris discharging groove; the spiral blades are uniformly distributed by equal central angles; the upper reaming protector and the lower reaming protector consist of spiral protection blades which are uniformly distributed by equal central angles; a curved debris discharging groove is formed among the spiral protection blades; and a spiral angle of the rotating speed increaser, a spiral angle of the upper reaming protector and a spiral angle of the lower reaming protector are equal to one another. The rotating speed increaser can be protected by the reaming protectors, the wear of uneven walls of the well on the rotating speed increaser is reduced, even if the drilling tool is bent or buckled, the collision between the rotating speed increaser and the walls of the well also can be reduced, and the service life of the tool is prolonged.
Description
1. Technical field: [0001] The invention relates to a wellbore cleaning tool in the oil and gas drilling process, in particular to a cuttings cleaning device used on a drilling tool. 2. Background technology: [0002] During the drilling process of oil and gas resources, the drill bit continuously breaks the rock to form the wellbore, and the cuttings (the debris after the rock is broken) are carried to the surface through the circulation of the drilling fluid in the annulus (the annular space between the drill string and the wellbore). If cuttings cannot be cleaned out of the wellbore in time, cuttings accumulation will occur, that is, a cuttings bed will be formed, especially in the drilling process of complex structure wells such as extended-reach horizontal wells and multi-branch wells. Field experience and laboratory theory Experiments have shown that cuttings beds are easy to form between highly deviated well sections and horizontal well sections (with an inclination a...
Claims
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IPC IPC(8): E21B12/06E21B12/04
Inventor 闫铁孙晓峰邵帅孙庆仁吕长文栾石柱
Owner NORTHEAST GASOLINEEUM UNIV