Slurry kinetic energy conversion device suitable for directional drilling construction in large drop mountain

A kinetic energy conversion and large drop technology, which is applied in the drilling drive device, directional drilling, drilling equipment and other directions in the wellbore, can solve the problems of insufficient hole lubrication, large drop, difficult to discharge rock debris in time, etc. Drive performance, reduce energy consumption, avoid offset effects

Active Publication Date: 2018-01-26
CHINA NAT CHEM ENG NO 14 CONSTR
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

During the directional drilling construction process, it is necessary to ensure that sufficient mud is exposed in the formed hole. In the traditional directional drilling construction process, the height difference between the entry position and the excavation position is small, so the mud can be evenly distributed in the hole. During the construction of directional drilling in mountains with a large drop, due to the large drop between the excavation position and the entry position, it is difficult to obtain sufficient supply of mud inside the hole, which makes the hole prone to insufficient lubrication inside the hole due to lack of mud. Sufficiently, the rock debris generated during the drilling process is difficult to be discharged in time, which affects the construction efficiency and effect of directional drilling
At the same time, it is difficult to meet the crushing and crossing requirements for hard geology when using traditional drilling tools in the drilling process under the above-mentioned working conditions, and it will cause after-molding due to the swing of the hinge during the drilling process. The holes are distributed in an "S" shape

Method used

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  • Slurry kinetic energy conversion device suitable for directional drilling construction in large drop mountain
  • Slurry kinetic energy conversion device suitable for directional drilling construction in large drop mountain

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Experimental program
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Effect test

Embodiment 1

[0021] Such as figure 1 A mud kinetic energy conversion device suitable for directional drilling construction in a mountain with a large drop is shown, which includes a mud bypass valve and a mud drive device; the mud bypass valve includes a valve body 1 with a hollow structure, and the valve body 1 is provided with a valve chamber 2, and the valve body 1 includes a mud inlet 3 and a mud outlet 4 leading to the valve chamber 2, and the mud driving device and the mud outlet 4 are in communication with each other. Among the valve cavity 2, a valve core 5 is provided at the position corresponding to the mud inlet 3, a valve seat 6 is correspondingly provided at the mud outlet 4, and an elastic spring 7 is arranged between the valve core 5 and the valve seat 6; A guide hole 8 extending along its axial direction is provided in the center, and the end of the valve core 5 extends to the inside of the valve seat 6; a plurality of valve bodies are provided in the valve body 1 and lead ...

Embodiment 2

[0028] As an improvement of the present invention, such as figure 1 As shown, the through hole 8 of the valve core 5 includes a first end 801 relative to the mud inlet 3 and a second end 802 relative to the valve seat 6. The first end 801 of the through hole 8 The diameter of the first end portion 801 gradually decreases toward the second end portion 802 extending direction. Adopting the above-mentioned technical scheme, it can make the spool-phase conduction hole form a bucket-shaped structure for the mud inlet position, so as to ensure that the mud introduced by the mud inlet can quickly enter into the conduction space, and also make the mud flow to the spool. When pushing, it can pass through the side wall of the bucket-shaped structure to form a larger mud driving area, thereby improving the stability of the valve core during operation.

[0029] The remaining features and advantages of this embodiment are the same as those of Embodiment 1.

Embodiment 3

[0031] As an improvement of the present invention, such as figure 2 As shown, in the valve body, a sieve plate 16 is provided at the end of each bypass pipeline 9 , and partition plates 17 are respectively provided on both sides of the sieve plate 16 . With the above-mentioned technical solution, it is possible to prevent the rock fragments outside the bypass pipeline from entering the pipeline through the setting of the sieve plate, causing blockage or even damage to the equipment.

[0032] The remaining features and advantages of this embodiment are the same as those of Embodiment 2.

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Abstract

The invention discloses a slurry kinetic energy conversion device suitable for directional drilling construction in a large drop mountain. The slurry kinetic energy conversion device comprises a slurry by-pass valve and a slurry driving device. According to the slurry kinetic energy conversion device, directional drilling operation can be completed by driving working of related parts through kinetic energy generated by slurry movement in the treatment process of directional drilling construction on the large drop mountain, the driving effect is made to be improved significantly, and meanwhile,slurry supply in holes drilled directionally is made to be more abundant.

Description

technical field [0001] The invention relates to the fields of geology and geotechnical engineering, in particular to a mud kinetic energy conversion device suitable for directional drilling construction in mountains with large drop differences. Background technique [0002] Directional drilling, as a major non-excavation technology, has been widely used in complex terrain projects such as various pipelines crossing rivers, highways, railways and mountains. During the directional drilling construction process, it is necessary to ensure that there is enough mud exposed in the forming hole. In the traditional directional drilling construction process, the height difference between the entry position and the excavation position is small, so the mud can be evenly distributed in the hole. During the construction of directional drilling in mountains with a large drop, due to the large drop between the unearthed position and the buried position, it is difficult to obtain sufficient ...

Claims

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Application Information

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IPC IPC(8): E21B4/02E21B7/04
Inventor 焦赞李延明崔定龙
Owner CHINA NAT CHEM ENG NO 14 CONSTR
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