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Combined drill bit for ploughing and grinding integrated rock breaking

A composite rock-breaking and hybrid drill bit technology, which is applied in the direction of drill bits, earthwork drilling, drilling equipment, etc., can solve the problems of low mechanical penetration rate and efficiency, and cutting elements are easily damaged by impact, so as to improve work efficiency and durability , The effect of speeding up the speed of breaking rocks

Active Publication Date: 2021-02-05
BC P INC CHINA NAT PETROLEUM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the low ROP and efficiency in the actual drilling process in the above-mentioned prior art, when the drill bit encounters some formations with more soft and hard interlayers, the cutting elements of the PDC diamond drill bit are extremely vulnerable to impact damage. The present invention provides A hybrid drill bit for plow cutting and grinding compound rock breaking

Method used

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  • Combined drill bit for ploughing and grinding integrated rock breaking
  • Combined drill bit for ploughing and grinding integrated rock breaking
  • Combined drill bit for ploughing and grinding integrated rock breaking

Examples

Experimental program
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Effect test

Embodiment 1

[0027] A hybrid drill bit for plowing, grinding and compound rock breaking, characterized in that it comprises: a first crushing element 1, a second crushing element 2, a blade 3, a flow channel 4, a diamond impregnated layer 5, a drill body 6, and a drill joint 7 and blade ring groove 8, the bottom of the drill bit body 6 is provided with a drill joint 7 for dismounting the drill bit, and the top of the drill bit body 6 is provided with a plurality of blades 3 for breaking rocks, and the blades 3 The surface is provided with a diamond-impregnated layer 5 for increasing the strength of the blade 3, and the first broken element 1 and the second broken element 2 are alternately arranged on the blade 3, and there are holes for drilling between the plurality of blades 3. The flow channel 4 for liquid discharge, and the blade ring groove 8 is arranged on the blade 3 .

[0028] Further, the coincidence of the annular groove of the cutter wing with the annular boss formed by the cut ...

Embodiment 2

[0030] A hybrid drill bit for plowing, grinding and compound rock breaking, characterized in that it comprises: a first crushing element 1, a second crushing element 2, a blade 3, a flow channel 4, a diamond impregnated layer 5, a drill body 6, and a drill joint 7 and blade ring groove 8, the bottom of the drill bit body 6 is provided with a drill joint 7 for dismounting the drill bit, and the top of the drill bit body 6 is provided with a plurality of blades 3 for breaking rocks, and the blades 3 The surface is provided with a diamond-impregnated layer 5 for increasing the strength of the blade 3, and the first broken element 1 and the second broken element 2 are alternately arranged on the blade 3, and there are holes for drilling between the plurality of blades 3. The flow channel 4 for liquid discharge, and the blade ring groove 8 is arranged on the blade 3 .

[0031] The drill bit body 6 is provided with at least 6 blades 3 for breaking rock.

[0032] The height range of...

Embodiment 3

[0036] A hybrid drill bit for plowing, grinding and compound rock breaking, characterized in that it comprises: a first crushing element 1, a second crushing element 2, a blade 3, a flow channel 4, a diamond impregnated layer 5, a drill body 6, and a drill joint 7 and blade ring groove 8, the bottom of the drill bit body 6 is provided with a drill joint 7 for dismounting the drill bit, and the top of the drill bit body 6 is provided with a plurality of blades 3 for breaking rocks, and the blades 3 The surface is provided with a diamond-impregnated layer 5 for increasing the strength of the blade 3, and the first broken element 1 and the second broken element 2 are alternately arranged on the blade 3, and there are holes for drilling between the plurality of blades 3. The flow channel 4 for liquid discharge, and the blade ring groove 8 is arranged on the blade 3 .

[0037] The drill bit body 6 is provided with at least 6 blades 3 for breaking rock.

[0038] The height of the f...

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Abstract

The invention belongs to the field of oil exploration and development, and relates to an oil exploration drill bit, in particular to a combined drill bit for ploughing and grinding integrated rock breaking. The combined drill bit is characterized by comprising first breaking parts, second breaking parts, blades, flow channels, a diamond-impregnated layer, a drill bit body, a drill bit connector and blade ring grooves. The drill bit connector used for disassembling and assembling the drill bit is arranged at the bottom of the drill bit body. A plurality of blades used for breaking rock are arranged at the top of the drill bit body. The diamond-impregnated layer used for improving the strength of the blades is arranged on the surfaces of the blades. The first breaking parts and the second breaking parts are arranged on the blades in a staggered mode. The flow channels used for discharging drilling fluid are arranged among the multiple blades. The blade ring grooves are formed in the blades.

Description

technical field [0001] The invention belongs to the field of petroleum exploration and development, and relates to a petroleum exploration drill bit, in particular to a hybrid drill bit for plowing, grinding and compound rock breaking. Background technique [0002] With the continuous deepening of petroleum exploration and development, shallow and easy-to-develop oil and gas resources are becoming less and less. Seeking oil and gas resources in deep formations and complex geological conditions is gradually becoming an important task in current exploration and development. Deep hard rock usually exhibits properties such as high strength, high hardness, strong abrasiveness, serious heterogeneity and poor drillability during drilling. PDC bits, impregnated diamond bits and other rock-breaking drill bits generally have the problems of slow drilling speed and short life of the drill bit in the process of drilling deep hard rock formations, resulting in high drilling costs, which ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B10/42E21B10/43E21B10/54E21B10/60
CPCE21B10/42E21B10/43E21B10/54E21B10/602
Inventor 杨博仲韩烈祥姚建林乔李华冯明李伟成杨晓峰李勇范生林彭陶钧余来洪刘洪彬
Owner BC P INC CHINA NAT PETROLEUM CORP