Quick connect joint for drill pipe

A quick connection and drill pipe technology, which is applied in the direction of drill pipe, drill pipe, drilling equipment, etc., can solve the problems of stress concentration between the drill pipe and the connecting structure, reduce the service life of the drill pipe, increase the cost of exploration work, etc., so as to improve the service life , Compact structure, overcome the effect of stress concentration

Inactive Publication Date: 2017-11-10
武汉众恒六合工业技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above drill pipe quick connection structures all adopt the pin-type connection method, but in actual use, the use of the pin-type connection method has the disadvantage that the drill pipe and the connection structure are prone to stress concentration, which leads to deformation and damage of the drill pipe and reduces the Drill pipe life, increasing the cost of exploration work

Method used

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  • Quick connect joint for drill pipe
  • Quick connect joint for drill pipe
  • Quick connect joint for drill pipe

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Embodiment 1: The present invention provides a kind of quick connect joint of drill rod, and its structure is as follows figure 1 As shown, the quick-connect joint of the drill pipe is composed of an outer casing 2, an O-ring 3 and an inner casing 4. The assembly sequence of the drill pipe and the joint is the lower drill pipe 1, the outer casing 2, the inner casing 4 and the upper drill pipe 5, and the O-ring 3 is installed in the sealing groove 8 of the inner casing for the inner casing 4 Sealing with outer casing 2.

[0017] see image 3 , the inner tube wall of the outer casing 2 is evenly provided with three outer casing stoppers 12, the outer casing stopper is used to transmit torque through the contact surface of the inner and outer casing stoppers when connecting with the inner casing 4; The outer casing thread 10 is provided at the lower end, and the outer casing thread is used for connection with the lower drill pipe; the outer pipe wall in the middle of the...

Embodiment 2

[0020] Embodiment 2: The quick connection joint of the drill pipe provided by the embodiment 1 is used to quickly assemble and disassemble the drill pipe of the drilling rig.

[0021] The specific operation process is as follows: figure 1 shown.

[0022] 1. Connect the inner casing 4 with the upper drill pipe 5 through the inner casing thread 9 .

[0023] 2. Install the O-ring in the sealing groove 8 of the inner casing, insert the inner casing 4 into the outer casing 2 and rotate until the side of the inner casing stopper 7 contacts the side of the outer casing stopper 12, at this time the inner casing The axial stop piece 6 of the pipe should overlap with the end face of the outer casing block 12 in the axial direction, so that the two parts cannot be pulled apart in the axial direction.

[0024] 3. Connect the outer casing to the lower drill pipe 1 through the outer casing thread 10 .

[0025] 4. During the drilling process of the drilling rig, the internal flushing flui...

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Abstract

The invention relates to a quick connection joint of a drill pipe, which is composed of an outer casing, an O-ring and an inner casing, and the inner and outer casings are sealed by an O-ring; The outer casing thread and flat groove are provided on the pipe wall, the inner casing thread, the inner casing sealing groove and the inner casing stopper with an axial stopper at the lower end are provided on the inner casing, and the inner casing thread and the outer casing thread are respectively used for Connecting the upper and lower drill pipes; the order in which the joint of the present invention is connected to the drill pipes is the lower drill pipe, the outer casing, the inner casing and the upper drill pipe. When the inner and outer casings are connected, the side contact of the inner and outer casing stoppers is formed to bear the transmission torque; the axial stopper is in contact with the end face of the outer casing stopper, so that the inner and outer casings cannot be axially pulled apart, and is used to withstand the lifting of the drill when the axial tension. The joint of the invention has the advantages of compact structure, good sealing performance, long service life, convenient and fast installation and disassembly, and is especially suitable for use on small-sized and portable geological exploration sampling drilling rigs.

Description

technical field [0001] The invention relates to a quick-connect joint for drill pipes, in particular to a quick-connect joint for drill pipes suitable for small drilling rigs, and belongs to the field of geological exploration. Background technique [0002] Resource exploration and development usually work in remote and remote areas, where vehicles are difficult to enter, and traditional large drilling rigs are difficult to meet the requirements of easy handling and disassembly. Therefore, small drilling rigs are needed to reduce the labor intensity of moving drilling rigs and increase work efficiency; During the drilling process of the drilling rig, the drill pipe often needs to be installed and disassembled very frequently. If the drill pipe cannot be installed and disassembled quickly when the drilling rig is working, it will increase the exploration workload and affect the progress of resource exploration and development; Before the present invention, there was a utility...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B17/042E21B17/046
Inventor 张东霄赵海侗王锡霖徐凯李波
Owner 武汉众恒六合工业技术有限公司
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