Laser drill bit with negative pressure suction function

A laser and negative pressure technology, used in drill bits, thermal drilling, drilling equipment, etc., can solve the problem that broken cuttings cannot be carried away in time, and achieve the effect of avoiding repeated crushing, improving rock breaking efficiency and prolonging service life.

Inactive Publication Date: 2020-08-14
BAOJI PETROLEUM MASCH CO LTD +2
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a laser drill bit with negative pressure suction function, which solves the problem in the prior art that broken cuttings cannot be carried away in time after being held by high-pressure drilling fluid at the bottom of the well

Method used

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  • Laser drill bit with negative pressure suction function
  • Laser drill bit with negative pressure suction function
  • Laser drill bit with negative pressure suction function

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Embodiment Construction

[0024] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0025] A kind of laser drill bit with negative pressure suction function of the present invention, such as figure 1 As shown, a drill body 1 is included, and a laser system 2 and a fluid circulation system 3 are arranged in the drill body 1 . A plurality of blades 4 are arranged on the drill body 1 , and chip removal grooves 5 are formed between two adjacent blades 4 . The blades 4 protrude from the bit body 1 so that an annular space 10 is formed between the bit body 1 and the bottom hole rock 9 . During work, the chip flute 5 and the annular space 10 are filled with broken rock cuttings. Such as figure 2 and image 3 As shown, a laser outlet 6 connected to the laser system 2, a water hole 7 and a water outlet 8 connected to the fluid circulation system 3 are provided on the chip removal groove 5, and the laser outlet 6 and the water ho...

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Abstract

The invention discloses a laser drill bit with a negative pressure suction function. The laser drill bit comprises a drill bit body, wherein a laser system and a fluid circulation system are arrangedin the drill bit body; the drill bit body is provided with a plurality of blades; each cutting removal groove is formed between the corresponding two adjacent blades; the cutting removal grooves are provided with laser outlets, water holes and water draining openings; the laser outlets communicate with the laser system; the water holes and the water draining openings communicate with the fluid circulation system; each of the laser outlets and the corresponding water hole are separately positioned on the corresponding two adjacent cutting removal grooves; and the water draining openings are positioned on the blades. Lasers carried by the drill bit are utilized to irradiate rock and weaken the strength of the rock so as to generate micro cracks on the rock, so that rock breaking by mechanical rotation of cutting teeth of the drill bit is easier and quicker. The laser drill bit has the negative pressure suction function, thereby facilitating the timely transport of broken rock cuttings atthe bottom of a well, avoiding repeated breaking, providing a clean bottom-hole environment for laser irradiation, and achieving the effects of improving the rock breaking efficiency of the drill bitand prolonging the service life of the drill bit.

Description

technical field [0001] The invention belongs to the technical field of rock-breaking tools, and relates to a laser drill bit with negative pressure suction function. Background technique [0002] With the continuous deepening of exploration and development, commonly used PDC bits and roller cone bits have poor wear resistance of cutting teeth, Easy to collapse, slow mechanical drilling speed of the drill bit, low footage and other problems have brought severe challenges to the continuous acceleration of drilling. [0003] Laser-mechanical combined rock-breaking technology is a brand-new cutting-edge technology for drilling and breaking rocks. It applies laser energy to the rock surface through laser irradiation, causing changes in the temperature field and stress field of the rock to produce micro-cracks, weakening the strength of the rock, and then Cooperate with mechanical impact or scraping to break rock, accelerate rock breaking, and increase the drilling speed of the d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B10/00E21B10/43E21B10/60E21B7/15
CPCE21B7/15E21B10/00E21B10/43E21B10/602
Inventor 闫静王德贵左永强阎永宏邓荣
Owner BAOJI PETROLEUM MASCH CO LTD
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