Double-layer water gap diamond coring drill bit and manufacturing method thereof
A core bit and diamond technology, which is applied in the direction of drill bit, drilling equipment, earthwork drilling, etc., can solve the problems of many processing steps and unfavorable actual production, etc., and achieve the effects of improving service life, easy processing, and beneficial to mud circulation
Pending Publication Date: 2021-12-28
核工业二四三大队 +1
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Problems solved by technology
[0003] The present invention intends to provide a double-layer nozzle diamond core bit, which solves the problem of many processing steps in the prior art when dealing with the diversion of drilling fluid, which is not conducive to actual production
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[0047] as attached Figure 1 to Figure 4 Shown: a double-layer nozzle diamond coring drill bit, comprising a drill bit steel body 1, and the drill bit steel body 1 adopts a cylindrical structure with a hollow interior. The upper side of the drill bit steel body 1 is provided with a plurality of tire block embedding grooves 2 in the circumferential direction, and all the tire block embedding grooves 2 are provided with a first diamond block 3 and a block embedding groove 2 that is not in the same block embedding groove 2 as the first diamond block 3. The second diamond block 4, a plurality of first diamond blocks 3 are located on the upper side of the block embedding groove 2, the center line of the top surface of each first diamond block 3 coincides with the radius of the drill steel body 1, and all the first diamond blocks 3 The top surfaces of a diamond block 3 are all located in the same plane. A water retaining bar 5 located on one side of the first diamond block 3 is emb...
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The invention discloses a double-layer water gap diamond coring drill bit and a manufacturing method thereof, and particularly relates to the technical field of drill bits. The double-layer water gap diamond coring drill bit comprises a drill bit steel body, and a plurality of matrix block embedding grooves are formed in one side of the drill bit steel body; first diamond matrix blocks and second diamond matrix blocks are arranged in the matrix block embedding grooves at intervals, first-layer water gaps are formed in the matrix block embedding grooves, second-layer water gaps are formed in the matrix block embedding grooves, the second-layer water gaps penetrate through the top of the drill bit steel body, the first-layer water gaps and the second-layer water gaps both communicate with the drill bit steel body, the inner side wall and the outer side wall of the drill bit steel body are each provided with a water groove distributed along one sides of the first-layer water gaps, and a plurality of gauge protection strips located between the first diamond matrix blocks and the second diamond matrix blocks are embedded in the outer side wall of the drill bit steel body in the circumferential direction. By the adoption of the technical scheme, the problems that in the prior art, when drilling fluid diversion is treated, the number of machining steps is large, and actual production is not facilitated are solved, and the drill bit can be used for improving the efficiency of geological drilling work.
Description
technical field [0001] The invention relates to the technical field of drill bits, in particular to a double-layer nozzle diamond coring drill bit and a manufacturing method thereof. Background technique [0002] Wireline coring technology has been widely used in geological drilling work, and drilling in hard, moderately and weakly abrasive formations requires more and more high-performance diamond bits. Ordinary diamond drill bits have short footage and are easy to wear, which leads to frequent trips and trips to replace the drill bits. In order to prolong the service life of the drill bit, in addition to the reasonable improvement of the carcass formula, the drill bit structure can also be improved, such as the use of a high carcass structure. However, most of today's high-matrix drill bits have long nozzles or multi-layer nozzles, which cause drilling fluid shunting and insufficient bottom drilling fluid. In order to solve the problem of drilling fluid shunting, the con...
Claims
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Login to View More IPC IPC(8): E21B10/48B23P15/28
CPCE21B10/48B23P15/28
Inventor 孙祺斌王琳晋少东赵博范海波贾生来刘忠存王野丛源鹏
Owner 核工业二四三大队