Guiding and injecting integrated mechanism for continuous conduit

Patent metadata

Field	Value
Publication number	US-11821271-B2
Application number	US-202018010072-A
Country	US
Kind code	B2
Filing date	Dec 3, 2020
Priority date	Jul 28, 2020
Publication date	Nov 21, 2023
Grant date	Nov 21, 2023

Abstract

Disclosed is a guiding and injecting integrated mechanism for continuous conduit, belonging to underground exploration technical field. The mechanism comprises a pair of chain wheel and chain clamping assemblies used for clamping conduit and pulling conduit to go down or out of well. A conduit guiding channel for conduit to pass through is formed between the pair of chain wheel and chain clamping assemblies, and an inlet and an outlet of the conduit guiding channel are not situated in line. The conduit guiding channel is arc-shaped and each of the two chain wheel and chain clamping assemblies comprises a chain wheel set, chains, clamping blocks mounted on the chain, and a pushing plate for pressing the clamping blocks. Further, clamping surfaces of the clamping blocks have a certain curvature with respect to guiding direction.

First claim

What is claimed is:

1. A guiding and injecting integrated mechanism for a continuous conduit, comprising a pair of sprocket and chain clamping assemblies, the pair of sprocket and chain clamping assemblies are configured to clamp the conduit and pull the conduit to go downwards in a well or upwards in a lifting direction; between the pair of sprocket and chain clamping assemblies, a conduit guiding channel applied for the conduit to pass through is formed; an inlet and an outlet of the conduit guiding channel are not situated in a straight line;
wherein each of the pair of sprocket and chain clamping assemblies comprises a sprocket set, a chain, and a plurality of clamping blocks mounted on the chain and a pushing plate configured to press the clamping blocks to form the conduit guiding channel and clamp the conduit.

2. The guiding and injecting integrated mechanism for the continuous conduit according to claim 1 , wherein the conduit guiding channel is arc-shaped.

3. The guiding and injecting integrated mechanism for the continuous conduit according to claim 1 , wherein
the pushing plate is an arc-shaped plate, both pushing plates of the pair of sprocket and chain clamping assemblies are concentrically arranged; the pushing plate of at least one of the pair of sprocket and chain clamping assemblies has a clamping driving device connected, the clamping driving device is configured to drive the pushing plate to move in a radial direction;
the pushing plates of the pair of sprocket and chain clamping assemblies are configured to form the conduit guiding channel between a certain number of the clamping blocks of the pair of sprocket and chain clamping assemblies, and make the certain number of the clamping blocks of the pair of sprocket and chain clamping assemblies clamp the conduit.

4. The guiding and injecting integrated mechanism for the continuous conduit according to claim 3 , wherein the pushing plate presses the clamping blocks through a bearing roller.

5. The guiding and injecting integrated mechanism for the continuous conduit according to claim 3 , wherein the sprocket set of one of the pair of sprocket and chain clamping assemblies located at periphery comprises a driving wheel, a tensioning wheel, and a driven wheel; the sprocket set of the other one of the pair of sprocket and chain clamping assemblies located in inlier comprises a driving wheel and a driven wheel.

6. The guiding and injecting integrated mechanism for the continuous conduit according to claim 3 , wherein each of the sprocket sets of the pair of sprocket and chain clamping assemblies comprises a driving wheel, a tensioning wheel, and a driven wheel.

7. The guiding and injecting integrated mechanism for the continuous conduit according to claim 3 , wherein the clamping driving device is a hydraulic cylinder.

8. The guiding and injecting integrated mechanism for the continuous conduit according to claim 3 , wherein a clamping surface of the clamping block has a certain radian at a guiding direction.

9. The guiding and injecting integrated mechanism for the continuous conduit according to claim 1 , wherein the inlet of the conduit guiding channel has an arc-shaped guide short section arranged.

10. The guiding and injecting integrated mechanism for the continuous conduit according to claim 2 , wherein
the pushing plate is an arc-shaped plate, both pushing plates of the pair of sprocket and chain clamping assemblies are concentrically arranged; the pushing plate of at least one of the pair of sprocket and chain clamping assemblies has a clamping driving device connected, the clamping driving device is configured to drive the pushing plate to move in a radial direction;
the pushing plates of the pair of sprocket and chain clamping assemblies are configured to form the conduit guiding channel between a certain number of the clamping blocks of the pair of sprocket and chain clamping assemblies, and make the certain number of the clamping blocks of the pair of sprocket and chain clamping assemblies clamp the conduit.

Assignees

• Univ Shenzhen

Inventors

• Xie Heping
• Gao Mingzhong
• Chen Ling
• Zhao Le
• Yang Mingqing
• Yu Bo
• Li Jianan
• Li Cong
• He Zhiqiang
• Hu Yunqi

Classifications

• E21B19/22 Primary

  Handling reeled pipe or rod units, e.g. flexible drilling pipes {(lifting or hauling appliances using two or more cooperating endless chains B66D3/003)} · CPC title