Drilling cuttings conveying and crushing device for well drilling
A technology of crushing device and drilling cuttings, which is applied in earth-moving drilling, wellbore/well components, etc., can solve problems such as difficult to meet the drilling transmission of ultra-small wellbore, and achieve the effect of self-cleaning, transmission function and force transmission.
Active Publication Date: 2015-12-16
HUAZHONG UNIV OF SCI & TECH
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Problems solved by technology
At this stage, there is no drilling rig and derrick in the rig-less drilling technology. The traditional way of discharging cuttings by water circulation cannot be applied, and a new method is needed to discharge cuttings.
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[0027] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.
[0028] like figure 1 As shown, a drill cuttings conveying and crushing device for drilling includes a fixed housing 3, a planetary gear set 4, a partially threaded housing 2 and an intermittent threaded shaft 1, wherein,
[0029] The fixed casing 3 is used to be installed in the rock and soil for support, and its circumference is fixed without rotational movement, but it can be pushed by other ...
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The invention discloses a drilling cuttings conveying and crushing device for well drilling. The drilling cuttings conveying and crushing device for well drilling comprises a fixed shell, a planetary gear set, a local threaded shell and an intermittent threaded shaft; the planetary gear set comprises a gear ring, a central sun gear, a planetary carrier and a plurality of planetary gears; the local threaded shell is driven to rotate through a motor, and comprises a shell and a first threaded section arranged on the inner wall of the shell; the intermittent threaded shaft comprises a shaft body, a second threaded section and a third threaded section; the second threaded section is arranged on the outer side of the shaft body; the third threaded section is positioned below the second threaded section; a portion between the second threaded section and the third threaded section is an unthreaded shaft section; the first threaded section is positioned between the second threaded section and the third threaded section; when the local threaded shell rotates relative to the intermittent threaded shaft, the upper end of the first threaded section and the lower end of the second threaded section are close to each other or far away from each other periodically; and the lower end of the first threaded section and the upper end of the third threaded section are close to each other or far away from each other periodically, so that drilling cuttings can be crushed. By the drilling cuttings conveying and crushing device for well drilling, the drilling cuttings can be conveyed from bottom to top, and can be crushed during conveying, and the conveying efficiency is high.
Description
technical field [0001] The invention belongs to the field of drilling equipment, and more specifically relates to a drill cuttings conveying and crushing device for drilling. Background technique [0002] With the economic development, the number of oil and gas drilling is increasing rapidly, which also drives the need to change the drilling method. Drilling in the conventional sense requires drilling rigs, derricks, hoisting systems and turntables, which requires a huge system to reduce drilling efficiency, and the holes drilled during the drilling process are relatively large, resulting in waste of energy. The ultra-slim hole drilling method in the rig-free drilling technology is a revolution in drilling technology. It does not require a drilling rig, a derrick, a lifting system and a turntable, and the drilled holes are ultra-slim holes, which greatly improves drilling efficiency and saves energy. . At present, the rig-free drilling technology does not have a drilling r...
Claims
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IPC IPC(8): E21B41/00
Inventor 胡友民李晨光丰波彭轲谷勇李云童公见文刘晓健
Owner HUAZHONG UNIV OF SCI & TECH