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Upward Raise Drilling Technology

A technology for raising well drilling rigs and processes, applied in drilling equipment, drill pipes, drill pipes, etc., can solve the problems of consuming a lot of manpower and material resources, failing to show advantages, and consuming a lot of man-hours, so as to reduce man-hours and solve large-scale mechanical handling. Difficulty, the effect of improving the service life

Active Publication Date: 2017-05-24
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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Examples

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Effect test

Embodiment 1

[0038] Pre-supporting is required for tunnel excavation and wellbore excavation in areas with unstable formations to prevent accidents caused by landslides. This is a basic requirement for underground construction in areas with unstable formations.

[0039] The upward raise drilling rig used in the present invention is a mobile upward raise drilling rig, such as Figure 1~4 As shown, the mobile upward raise drilling rig includes a drilling device and a mobile 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. The drilling rig support mechanism includes a lower support 1, a base 2, a steering column 3, a top beam 4, and an upper support 5; The upper end of the support 1 is fixedly connected to the lower end of the guide post 3, and the upper end of the guide post 3 is fixedly connected to the lower end of the upper support 5; the base 2 is installed on the lower end of the guide post...

Embodiment 2

[0053] The mobile upward raise drilling rig used in this embodiment is the same as the mobile upward raise drilling rig used in Example 1.

[0054] For areas with stable formations, drilling in the stratum above the tunnel in the existing tunnel can perform simple protective treatments, such as installing protective nets on the stratum around the wellhead of the borehole to be drilled, and the protective net can be drilled in the wellbore. After completion, it will be disassembled and used in the next wellbore drilling construction.

[0055] Similar to the drilling construction of the formation above the tunnel in the unstable formation area, the drilling construction of the formation above the existing tunnel in the formation stability area also requires research and analysis of the geological conditions of the drilling formation. According to the geological data provided by the geology and design departments, conduct investigation and research, analyze and judge the stratum dip o...

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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 raise raise drilling technology. Background technique [0002] The process principle of the raise rig is to drive the hydraulic pump through the motor of the drilling rig, the hydraulic pump drives the hydraulic motor, and drives the power head. The hydraulic power is used to transmit the torque to the drilling tool system, drive the drill rod and the drill bit to rotate, pilot hole drill or reaming drill. Under the action of weight-on-bit, the upper hob makes pure rolling or micro-slip along the rock face at the bottom of the well. At the same time, the axial tension and pressure generated by the main engine oil cylinder are also acted on the pilot hole drill or reaming drill bit through the power head and drill rod, so that the hob of the pilot hole drill will roll under the action of the weight on bit, and the impact load will be generated. The teeth impact, squeeze and s...

Claims

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Application Information

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Patent Type & Authority Patents(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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