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Upward inverse well drilling process

A technology of raising drilling rig and process, which is applied in the direction of drilling equipment, drill pipe, drilling pipe, etc. It can solve the problems of consuming a lot of manpower and material resources, not showing advantages, and consuming a lot of man-hours, so as to reduce man-hours and solve large-scale machinery handling Difficulty, the effect of improving the service life

Active Publication Date: 2015-10-21
BEIJING CHINA COAL MINE ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing raise drilling technology cannot drill the formation above the tunnel in the existing tunnel. If it is necessary to drill the formation above the existing tunnel, it is necessary to excavate a new tunnel above the pre-drilled position. Or directly use other techniques for drilling construction, which not only consumes a lot of man-hours, but also consumes a lot of manpower and material resources, which cannot reflect the advantages of the raise drilling rig in drilling the formation above the tunnel in a single tunnel.

Method used

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Experimental program
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Effect test

Embodiment 1

[0038] Pre-support is required for tunnel excavation and shaft excavation in areas with unstable strata to prevent accidents caused by landslides, which is the basic requirement for underground construction in areas with unstable strata.

[0039] The upward raising drilling rig used in the present invention is a mobile upward raising drilling rig, such as Figure 1~4 As shown, the mobile upward drilling rig includes a drilling device and a moving device.

[0040] Wherein, the drilling device includes a drilling rig support mechanism, a main thrust cylinder 6, a power head 7 and a drilling tool, and the drilling rig support mechanism includes a lower support 1, a base 2, a guide column 3, a top beam 4 and an upper support 5; The upper end of the support 1 is fixedly connected with the lower end of the guide column 3, and the upper end of the guide column 3 is fixedly connected with the lower end of the upper support 5; On the guide column 3, the top beam 4 is installed on the ...

Embodiment 2

[0053] The mobile upward raising drilling machine used in this embodiment is the same as the mobile upward raising drilling machine used in Embodiment 1.

[0054] For areas with stable formations, simple protective treatment can be carried out in the existing tunnels to drill the formations above the tunnels, such as installing protective nets on the formations around the wellhead of the wellbore to be drilled, and the protective nets can be drilled in the wellbore. After it is completed, it is disassembled and continued to be used in the construction of the next wellbore drilling.

[0055] Similar to drilling the formation above the tunnel in the existing tunnel in the area with unstable formation, in the area with stable formation, the drilling construction of the formation above the existing tunnel also needs to study and analyze the geological conditions of the formation to be drilled. According to the geological data provided by the geological and design departments, cond...

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Abstract

The invention discloses an upward inverse well drilling process. The process includes the following steps of firstly, conducting geological survey on a stratum where holes are to be drilled, and determining the dip angle of the stratum; secondly, installing an upward inverse well drilling machine; thirdly, drilling in a well shaft; fourthly, supporting a well wall. By means of the process, drilling liquid can be saved, drilling time can be saved, the requirement for drilling the portion, above the single underground tunnel, of the stratum is met, the construction difficulty is lowered, manpower and material resources can be easily saved, and production efficiency is improved.

Description

technical field [0001] The invention relates to the field of mining machinery, in particular to an upward raising well drilling process. Background technique [0002] The technical principle of the raise drilling rig is that the motor of the drilling rig drives the hydraulic pump, the hydraulic pump drives the hydraulic motor, and drives the power head, and uses the hydraulic power to transmit the torque to the drilling tool system, driving the drill pipe and the drill bit to rotate, the pilot hole drill bit or the reaming drill bit Under the action of drilling pressure, the upper hob performs pure rolling or slight slip along the rock working face at the bottom of the well. At the same time, the axial tension and pressure generated by the oil cylinder of the main engine also act on the pilot hole drill bit or the reaming drill bit through the power head and drill rod, so that the hob of the pilot hole drill bit rolls under the action of drilling pressure, resulting in impac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B7/00E21B7/02
CPCE21B6/04E21B7/02E21B7/28E21B15/00E21B17/1078E21B19/10
Inventor 刘志强王强谭杰王桦左永江宁方波韩博邵方圆郭鲁川
Owner BEIJING CHINA COAL MINE ENG CO LTD
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