Unlock instant, AI-driven research and patent intelligence for your innovation.

An active anti-jamming pdc drill bit with a rotary rock breaking device

A technology of rotating rock breaking and drill bits, which is applied in the direction of drill bits, earthwork drilling, drilling equipment, etc., and can solve the problems of reducing the ability of drilling fluid to transport cuttings, falling rock blocks on the well wall, and bit jamming, etc.

Active Publication Date: 2021-05-18
BC P INC CHINA NAT PETROLEUM CORP +1
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the horizontal drilling process of the drill bit, there are often rocks falling from the well wall and the well collapse, causing the drill bit to be tightly stuck, and the falling rocks will reduce the ability of the drilling fluid to transport cuttings, making the drill bit Increased friction with the well wall
Complicated operations are required to remove the stuck drill bit from the well. In extreme cases, it is even impossible to remove the drill bit and the rotary steering device connected to the drill bit. The stuck drill bit will reduce the drilling efficiency and increase the drilling cost.
However, the drop of the well wall and the collapse of the well are unavoidable under the existing technical conditions, and the existing PDC bit is not enough to deal with the situation of stuck pipe

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • An active anti-jamming pdc drill bit with a rotary rock breaking device
  • An active anti-jamming pdc drill bit with a rotary rock breaking device
  • An active anti-jamming pdc drill bit with a rotary rock breaking device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] As a most basic embodiment of the present invention, such as figure 1 with 2 , discloses an active anti-jamming PDC drill bit with a rotary rock breaking device, including a drill body 2 provided with a cutter head 1, a plurality of drill blade blades 3 are arranged on the cutter head 1, and a knife blade is formed between the drill blade blades 3. The outer flow channel 4 on the side of the head 1, the cutter head 1 and the drill bit body 2 are provided with an inner flow channel 5 communicating with the fluid, and the fluid flows into the inner flow channel 5 from the end of the drill body 2 and passes through the drill bit body 2 and the inside of the cutter head 1 flow out from the outlet 6 at the front end of the cutter head 1; in the outer flow channel 4 of the cutter head 1, a rotating rock breaking device 7 is provided, and the rotating rock breaking device 7 includes a bottom for being arranged on the The impeller 7.1 in the inner flow channel 5 of the cutter ...

Embodiment 2

[0033] As a preferred embodiment of the present invention, preferably, such as figure 1 , the inner diameter of the inner flow channel 5 in the drill body 2 is greater than the inner diameter of the inner flow channel 5 in the cutter head 1, that is, the fluid in the inner flow channel 5 in the drill body 2 enters the inner flow channel in the cutter head 1 At 5 o'clock, a certain pressure difference is generated due to the flow difference, so that when entering the inner flow channel 5 of the cutter head 1, there is a greater impact force, which is more convenient to drive the rotary rock breaking device 7, and the inner part of the drill bit body 2 The flow channel 5 is located on the central axis of the drill body 2, and the inner flow channel 5 in the cutter head 1 is arranged along the direction of the outer flow channel 4 on the side of the cutter head 1 from the connecting end with the drill body 2, so that it can be placed on the drill body 2 and the inner runner 5 at ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The present invention relates to the technical field of stone drilling PDC drill bits, in particular to an active anti-jamming PDC drill bit with a rotary rock breaking device, which includes a drill body provided with a cutter head, a plurality of drill blade blades, and drill blade blades. The outer flow channel on the side of the cutter head is formed between them. The cutter head and the drill bit body are provided with an inner flow channel communicating with the fluid. The fluid flows into the inner flow channel from the end of the drill bit body and passes through the drill bit body and the cutter head. The inner back flows out from the outlet at the front end of the cutter head; in the outer channel of the cutter head, a rotary rock-breaking device is provided, and the rotary rock-breaking device includes an impeller at the bottom for being arranged in the inner channel of the cutter head, and a penetrating The cutter head is arranged on the side and the tail is plugged into the impeller, and the head is exposed to the rotating part of the outer channel. When the fluid flows through the inner channel of the cutter head, the impeller drives the rotating member to rotate.

Description

technical field [0001] The invention relates to the technical field of drilling PDC bits, in particular to an active anti-jamming PDC bit with a rotary rock breaking device. Background technique [0002] The drill bit is the main tool for breaking rock during the drilling process, and the wellbore is formed by breaking the rock with the drill bit. Whether a wellbore is formed well or not, the length of time it takes is not only related to the characteristics of the drilled formation rock and the performance of the drill bit itself, but also related to the degree of matching between the drill bit and the formation. It plays an important role in improving the drilling speed and reducing the comprehensive cost of drilling. [0003] The drill bit is one of the important tools for oil drilling. Whether the drill bit adapts to the rock properties and its quality plays a very important role in the selection of drilling technology, especially in terms of drilling quality, drilling ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): E21B10/54E21B10/55E21B10/60
CPCE21B10/54E21B10/55E21B10/602
Inventor 韩烈祥陆灯云姚建林张德军白璟冯明余晟李伟成李勇周兴李雷饶岩岩刘伟周刚张斌曾敏偲唐梁肖林
Owner BC P INC CHINA NAT PETROLEUM CORP