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Tripping pipe column drilling fluid injection and circulation device and method

A technology of circulation device and drilling fluid, applied in drilling equipment, drill pipe, drill pipe, etc., can solve the problems of difficult drilling fluid circulation, difficulty in connecting kelly pipe, stuck pipe accident, etc., so as to avoid wellhead mud overflow, Avoid unloading kelly operations and improve efficiency

Active Publication Date: 2015-04-29
BC P INC CHINA NAT PETROLEUM CORP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Except for a few key wells in my country, which use top drive drilling, conventional wells mainly use rotary table drilling, and generally need to connect kelly to realize the injection and circulation of drilling fluid. This is a repeated operation process of making up and breaking out, which is time-consuming and laborious.
If there is resistance during the tripping process, because it is difficult to connect the kelly at this time, it is difficult to realize the circulation of the drilling fluid in time, which may easily lead to pipe sticking accidents or blowout accidents

Method used

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  • Tripping pipe column drilling fluid injection and circulation device and method
  • Tripping pipe column drilling fluid injection and circulation device and method
  • Tripping pipe column drilling fluid injection and circulation device and method

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Experimental program
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Effect test

Embodiment 1

[0039] Embodiment 1: as figure 1 , figure 2 , image 3 , Figure 4 , Figure 5 , Image 6 As shown, the drilling fluid injection and circulation device for lifting and lowering pipe strings includes: motor 1, reduction box 2, connection seal 3, connection joint 4, drive shaft 5, guide rail seat 9, first cylinder 10, pin shaft 11, slide seat 12. Link mechanism 13, guide rail 14, lug seat 15, U-bolt 16, drilling fluid circulation pipeline interface 17, pipeline connection mechanism 18, drive cylinder 19, sealing pressure block 21, screw 22 and control system 20, etc. For auxiliary explanation, the drawings also include the elevator 6, pipe string 7, and suspension ring 8 of the drilling rig. Its composition relationship is as follows:

[0040] like figure 1 , figure 2As shown, the drilling fluid injection and circulation device for lifting and lowering pipe strings can be fixed on the lifting ring 8 of the drilling rig through ear sockets 15, U-shaped bolts 16, etc., a...

Embodiment 2

[0059] Embodiment 2: as figure 1 , figure 2 , image 3 , Figure 4 , Figure 5 , Image 6 as shown,

[0060] The utility model relates to a drilling fluid injection and circulation device for tripping strings, which is applied in the technical field of oil and gas drilling. The device is composed of a motor, a reduction box, a connection seal, a connection joint, a drilling fluid pipeline, a connecting rod mechanism, a cylinder, a drive shaft and a control system. The feature is: the drilling fluid injection and circulation device for tripping the pipe string can be installed on the lifting ring of the drilling rig; when drilling fluid injection and circulation are required during the tripping pipe string operation, the cylinder is operated by the control system to push the connecting joint to rotate to the elevator Above the clamped pipe string; the starter motor rotates in the forward direction, and the connection joint and the pipe string are quickly twisted through ...

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Abstract

The invention relates to a tripping pipe column drilling fluid injection and circulation device and a method, and belongs to the technical field of drilling well tripping pipe column operation in petroleum and natural gas industry. A lug seat and a U-shaped screw bolt are fixedly arranged on a drilling machine hanging ring, a motor is arranged at an input end of a speed reducing box, a connecting joint is connected with an output end of the speed reducing box, a connecting seal is arranged on the connecting joint, the tripping pipe column drilling fluid injection and circulation device is connected and sealed with a pipe column through the connecting joint and the connecting seal, the connecting seal is arranged on the connecting joint through a sealing press block and screws, the upper end of a pipeline connecting mechanism is provided with a drilling fluid circulation pipeline connector, the lower end of the pipeline connecting mechanism is connected with the connecting joint, the connecting joint is a rotating element, a first air cylinder is connected with a slide seat through a pin shaft, the first air cylinder is driven to drive the slide seat to vertically move along the guide rail, and a connecting rod mechanism is connected with the slide seat through a fifth pin shaft and a sixth pin shaft. In-factory bench tests show that the method and the device meet the design requirements and have the characteristics that the installation is fast and convenient, the operation is convenient, and safety and reliability are realized.

Description

technical field [0001] The invention relates to a tripping string drilling fluid injection and circulation device and method, and belongs to the technical field of drilling tripping string operations in the petroleum and natural gas industry. Background technique [0002] In the oil and gas industry, drilling is the process of opening channels from the ground to oil and gas reservoirs, and plays a very important role in the process of oil and gas resource exploration and development. During the drilling process, the wellhead power equipment relies on the drill string to transmit power to the drill bit. The drill bit is gradually worn out while drilling through the rock at the bottom of the well, causing the drilling speed to drop. When the wear reaches a certain level, the drill bit needs to be replaced. . At this time, it is necessary to trip all the drill strings in the downhole, and then put all the drill strings into the well for tripping after replacing the drill bit. ...

Claims

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Application Information

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IPC IPC(8): E21B19/16E21B21/00
CPCE21B21/08
Inventor 邹连阳黄衍福段马利贺涛方志猛杜金凤齐建雄张宏英陈晓军范春英张立刚李兴杰王娜
Owner BC P INC CHINA NAT PETROLEUM CORP
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