CN215256048U - PDC drill bit for drilling engineering with buffer function - Google Patents
PDC drill bit for drilling engineering with buffer function Download PDFInfo
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- CN215256048U CN215256048U CN202121592853.0U CN202121592853U CN215256048U CN 215256048 U CN215256048 U CN 215256048U CN 202121592853 U CN202121592853 U CN 202121592853U CN 215256048 U CN215256048 U CN 215256048U
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Abstract
The utility model discloses a PDC drill bit for drilling engineering with buffer function, including PDC drill bit body, be equipped with the round platform body of anti-sticking groove and being located anti-sticking groove top on the PDC drill bit body, the top of PDC drill bit body is equipped with the drill bit connecting rod, first rectangular channel has been seted up at the top of PDC drill bit body, and sliding sleeve is equipped with the installation pole in the first rectangular channel, and the top of installation pole extends to the top of PDC drill bit body and with the bottom thread tightening of drill bit connecting rod, and thread tightening has the rectangular rod on the bottom inner wall of first rectangular channel. The utility model relates to a rationally, be convenient for alleviate the hard impact force that PDC drill bit body bore footpath in-process, reduce the risk of PDC drill bit body damage because of hard impact force is great causes, and can adjust buffer spring's elasticity according to actual need, reach and can suitably carry out balanced adjustment to the range of beating and buffering dynamics, reduce the range of beating when effectively alleviating hard impact force, guarantee the normal work of PDC drill bit body.
Description
Technical Field
The utility model relates to a drill bit technical field for the drilling engineering especially relates to a PDC drill bit for drilling engineering with buffer function.
Background
In the oil drilling field, when the drill bit bore and meet gypsum rock, the mud-rock stratum of big section, the drill bit cutting teeth hardly eats the stratum, leads to the mechanical drilling speed very slow, and the stratum undergauge is serious, creeps into and easily appears the sticking accident, for the problem of solving the sticking: 201520693603.4 discloses an anti-seize PDC drill bit, which comprises a drill bit base body and a drill bit crown, wherein the drill bit crown at the front end of the drill bit base body is provided with blades, the lower parts of the blades are gauge parts, and the drill bit base body at the lower end of the gauge parts sequentially comprises an annular anti-seize groove and a circular truncated cone body with a small upper part and a large lower part from the bottom; the anti-clamping groove is a wedge-shaped groove; the wedge groove upper inclined plane does the extension of gage portion lower extreme hypotenuse, and its beneficial effect is rational in infrastructure, can reduce the friction of drawing a hole and hinder, avoids the sticking of a hole, greatly reduced well drilling risk improves the operating efficiency in easy card stratum creeps into, reduces and creeps into the cost.
In the patent, the setting of the anti-jamming groove matched with the round platform body is arranged on the drill bit, so that the risk of jamming the drill bit in the use process can be reduced, but the conventional PDC drill bit for drilling engineering is inconvenient for relieving the hard impact force in the drill bit diameter drilling process, when the drill bit runs at a high speed and encounters hard objects such as rocks and the like, a large hard impact force is easily generated, so that the drill bit directly generates hard impact with the hard objects, the risk of damage of the drill bit is easily increased, in order to relieve the hard impact force in the diameter drilling process, elastic members such as buffer springs and the like are also arranged at the installation position of the drill bit, but the elastic force of the springs is inconvenient for adjusting according to actual requirements, the jumping amplitude and the buffering force cannot be balanced, when the elastic force of the springs is too small, the jumping amplitude is too large, the normal diameter drilling operation is influenced, and when the elastic force of the springs is too large and too hard, the PDC drill bit for the drilling engineering with the buffering function is provided for solving the problems.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the shortcoming that exists among the prior art, and the PDC drill bit for drilling engineering who provides with buffer function.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a PDC drill bit for drilling engineering with buffer function, includes PDC drill bit body, be equipped with on the PDC drill bit body and prevent the draw-in groove and be located the round platform body of anti-draw-in groove top, the top of PDC drill bit body is equipped with the drill bit connecting rod, first rectangular channel has been seted up at the top of PDC drill bit body, and sliding sleeve is equipped with the installation pole in the first rectangular channel, the top of installation pole extend to the top of PDC drill bit body and with the bottom thread tightening of drill bit connecting rod, the thread tightening has the rectangular pole on the bottom inner wall of first rectangular channel, the second rectangular channel has been seted up to the bottom of installation pole, the top of rectangular pole extends to in the second rectangular channel, the movable sleeve is equipped with buffer spring on the rectangular pole, buffer spring's top and the bottom fixed connection of installation pole, install elasticity pressure regulating mechanism on the rectangular pole, elasticity pressure regulating mechanism and buffer spring's bottom fixed connection.
Preferably, the elasticity pressure regulating mechanism includes that the slip cover establishes the pressure regulating block on the rectangular pole, the top of pressure regulating block and buffer spring's bottom fixed connection, first rectangular hole has been seted up to one side of rectangular pole, it installs the screw rod to rotate on the bottom inner wall of first rectangular hole, the top of screw rod extends to in the second rectangular channel, the thread bush is equipped with the movable block on the screw rod, pressure regulating block fixed mounting is on the movable block, fixed mounting has two locating levers between the top inner wall of first rectangular hole and the bottom inner wall, the screw rod is located between two locating levers, the movable block slip cap is established on two locating levers, be equipped with the square pole in the second rectangular channel, the screw rod slip cap is established on the square pole, the front side of installation pole is seted up first through-hole, the top of square pole extends to fixedly connected with knob in the first through-hole, the installation pole rotates the cover and is established on the square pole.
Preferably, the first mounting block of bottom fixedly connected with of rectangular pole has seted up first draw-in groove on the bottom inner wall of first rectangular channel, the outside of first mounting block and the inner wall movable contact of first draw-in groove, first thread groove has been seted up on the right side of first mounting block, first thread groove internal thread cover is equipped with first T shape fastening bolt, the right side of PDC drill bit body is seted up flutedly, first T shape fastening bolt's right side extends to in the recess, PDC drill bit body thread bush is established on first T shape fastening bolt.
Preferably, a second clamping groove is formed in the bottom end of the drill bit connecting rod, a second mounting block is fixedly connected to the top end of the mounting rod, the outer side of the second mounting block is in movable contact with the inner wall of the second clamping groove, a second thread groove is formed in the right side of the second mounting block, a second T-shaped fastening bolt is sleeved in the second thread groove in a threaded manner, the right side of the second T-shaped fastening bolt extends to the right side of the drill bit connecting rod, and the drill bit connecting rod is sleeved on the second T-shaped fastening bolt in a threaded manner.
Preferably, the top of the moving block is provided with a threaded hole and two rectangular through holes, the threaded hole is in threaded connection with the screw, and the inner wall of each rectangular through hole is in sliding connection with the outer side of the corresponding positioning rod.
Preferably, a first circular hole is formed in the inner wall of the bottom of the first rectangular hole, a first bearing is sleeved in the first circular hole in a fixed mode, a second circular hole is formed in the inner wall of the top of the first rectangular hole in a fixed mode, two second bearings are sleeved in the second circular hole in a fixed mode, and the inner ring inner side of the first bearing and the inner ring inner side of the second bearing are fixedly connected with the outer side of the screw rod.
Preferably, the top of the pressure regulating block is provided with a second rectangular hole, the inner wall of the second rectangular hole is slidably connected with the outer side of the rectangular rod, and the inner walls on two sides of the second rectangular hole are fixedly connected with two sides of the moving block respectively.
Preferably, the top end of the screw rod is provided with a square groove, and the inner wall of the square groove is in sliding connection with the outer side of the square rod.
Compared with the prior art, the beneficial effects of the utility model are that:
through the PDC drill bit body, the anti-clamping groove, the circular truncated cone body, the drill bit connecting rod, the mounting rod, the first rectangular groove, the second rectangular groove, the pressure regulating block, the rectangular rod, the buffer spring, the first rectangular hole, the moving block, the positioning rod, the screw rod, the square rod, the first mounting block, the first T-shaped fastening bolt, the first thread groove, the first through hole and the knob are matched with the second mounting block, during drilling operation, when a hard object is encountered, the PDC drill bit body 100 can generate a hard impact force with the hard object, when the PDC drill bit body 100 moves to be in contact with the hard object, the PDC drill bit body is limited to continue moving downwards, the downward force drives the mounting rod to slide downwards on the rectangular rod and buffer the buffer spring, and under the elastic force action of the buffer spring, the hard impact force in the drilling process of the PDC drill bit body is effectively relieved;
when buffer spring's elasticity is softer, when needing to adjust buffer spring's elasticity size, the knob is rotated to the forward direction and drives the screw rod through the square pole and rotate, the screw rod rotates and drives the movable block rebound, the movable block drives the pressure regulating piece rebound and compresses buffer spring, make buffer spring initial state just be in slightly compression or half compression state, the damping elasticity grow of buffer spring to the PDC drill bit body that is in compression state, the range of rocking of PDC drill bit body when boring the footpath diminishes this moment, guarantee the normal work of PDC drill bit body, when needs take off PDC drill bit body from the installation pole, can forward rotation first T shape fastening bolt shifts out from first thread inslot, can remove PDC drill bit body from the installation pole downwards this moment, make things convenient for personnel to change PDC drill bit body alone.
The utility model relates to a rationally, be convenient for alleviate the hard impact force that PDC drill bit body bore footpath in-process, reduce the risk of PDC drill bit body damage because of hard impact force is great causes, and can adjust buffer spring's elasticity according to actual need, reach and can suitably carry out balanced adjustment to the range of beating and buffering dynamics, reduce the range of beating when effectively alleviating hard impact force, guarantee the normal work of PDC drill bit body.
Drawings
Fig. 1 is a schematic structural diagram of a PDC drill bit with a buffering function for drilling engineering according to the present invention;
FIG. 2 is a schematic cross-sectional view of FIG. 1;
fig. 3 is an enlarged schematic view of a portion a in fig. 2.
In the figure: 100PDC drill bit body, 101 anti-seize grooves, 102 round table body, 103 drill bit connecting rods, 1 mounting rod, 2 first rectangular grooves, 3 second rectangular grooves, 4 pressure regulating blocks, 5 rectangular rods, 6 buffer springs, 7 first rectangular holes, 8 moving blocks, 9 positioning rods, 10 screw rods, 11 square rods, 12 first mounting blocks, 13 first T fastening bolts, 14 first thread grooves, 15 first through holes, 16 knobs and 17 second mounting blocks.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
Referring to fig. 1-3, a PDC drill bit with a buffering function for drilling engineering, comprising a PDC drill bit body 100, wherein the PDC drill bit body 100 is provided with a locking groove 101 and a round platform body 102 located above the locking groove 101, a drill bit connecting rod 103 is arranged above the PDC drill bit body 100, a first rectangular groove 2 is formed in the top of the PDC drill bit body 100, a mounting rod 1 is slidably sleeved in the first rectangular groove 2, the top end of the mounting rod 1 extends above the PDC drill bit body 100 and is fixed with the bottom end of the drill bit connecting rod 103 through a thread, a rectangular rod 5 is fixed on the inner wall of the bottom of the first rectangular groove 2 through a thread, a second rectangular groove 3 is formed in the bottom end of the mounting rod 1, the top end of the rectangular rod 5 extends into the second rectangular groove 3, a buffering spring 6 is movably sleeved on the rectangular rod 5, the top end of the buffering spring 6 is fixedly connected with the bottom end of the mounting rod 1, and an elastic pressure regulating mechanism is installed on the rectangular rod 5, the elastic pressure regulating mechanism is fixedly connected with the bottom end of the buffer spring 6;
the elastic pressure regulating mechanism comprises a pressure regulating block 4 which is sleeved on a rectangular rod 5 in a sliding manner, the top of the pressure regulating block 4 is fixedly connected with the bottom end of a buffer spring 6, one side of the rectangular rod 5 is provided with a first rectangular hole 7, a screw rod 10 is rotatably arranged on the inner wall of the bottom of the first rectangular hole 7, the top end of the screw rod 10 extends into a second rectangular groove 3, a moving block 8 is sleeved on the screw rod 10 in a threaded manner, the pressure regulating block 4 is fixedly arranged on the moving block 8, two positioning rods 9 are fixedly arranged between the inner wall of the top and the inner wall of the bottom of the first rectangular hole 7, the screw rod 10 is positioned between the two positioning rods 9, the moving block 8 is sleeved on the two positioning rods 9 in a sliding manner, a square rod 11 is arranged in the second rectangular groove 3, the screw rod 10 is sleeved on the square rod 11 in a sliding manner, the front side of the mounting rod 1 is provided with a first through hole 15, and the top end of the square rod 11 extends into the first through hole 15 and is fixedly connected with a knob 16, the installation pole 1 rotates the cover and establishes on square rod 11, the utility model relates to a rationally, be convenient for alleviate the hard impact force of PDC drill bit body 100 brill footpath in-process, reduce the risk that the great PDC drill bit body 100 that causes because of hard impact force damaged, and can adjust buffer spring 6's elasticity according to actual need, reach and can suitably carry out balanced adjustment to the range of beating and buffering dynamics, reduce the range of beating when effectively alleviating hard impact force, guarantee PDC drill bit body 100's normal work.
In the utility model, the bottom end of the rectangular rod 5 is fixedly connected with a first mounting block 12, the inner wall of the bottom of the first rectangular groove 2 is provided with a first clamping groove, the outer side of the first mounting block 12 is movably contacted with the inner wall of the first clamping groove, the right side of the first mounting block 12 is provided with a first thread groove 14, the inner thread sleeve of the first thread groove 14 is provided with a first T-shaped fastening bolt 13, the right side of the PDC drill bit body 100 is provided with a groove, the right side of the first T-shaped fastening bolt 13 extends into the groove, the PDC drill bit body 100 is sleeved on the first T-shaped fastening bolt 13 by a thread sleeve, the bottom end of the drill bit connecting rod 103 is provided with a second clamping groove, the top end of the mounting rod 1 is fixedly connected with a second mounting block 17, the outer side of the second mounting block 17 is movably contacted with the inner wall of the second clamping groove, the right side of the second mounting block 17 is provided with a second thread groove, the inner thread of the second T-shaped fastening bolt is arranged in the second thread groove, the right side of a second T-shaped fastening bolt extends to the right side of a drill bit connecting rod 103, the drill bit connecting rod 103 is sleeved on the second T-shaped fastening bolt in a threaded manner, the top of a moving block 8 is provided with a threaded hole and two rectangular through holes, the threaded hole is in threaded connection with a screw rod 10, the inner walls of the rectangular through holes are in sliding connection with the outer sides of corresponding positioning rods 9, the inner wall of the bottom of a first rectangular hole 7 is provided with a first circular hole, a first bearing is fixedly sleeved in the first circular hole, the inner wall of the top of the first rectangular hole 7 is provided with a second circular hole, two second bearings are fixedly sleeved in the second circular hole, the inner sides of the inner rings of the first bearing and the inner ring of the second bearing are fixedly connected with the outer side of the screw rod 10, the top of a pressure regulating block 4 is provided with a second rectangular hole, the inner wall of the second rectangular hole is in sliding connection with the outer sides of the rectangular rod 5, and the inner walls of two sides of the second rectangular hole are respectively and fixedly connected with the two sides of the moving block 8, the square groove has been seted up on the top of screw rod 10, the inner wall of square groove and the outside sliding connection of square bar 11, the utility model relates to a rationally, be convenient for alleviate the hard impact force of PDC drill bit body 100 brill footpath in-process, reduce the risk that the great PDC drill bit body 100 that causes because of hard impact force damaged, and can adjust buffer spring 6's elasticity according to actual need, reach and suitably carry out balanced adjustment to the range of beating and buffering dynamics, reduce the range of beating when effectively alleviating hard impact force, guarantee PDC drill bit body 100's normal work.
The working principle is as follows: when the PDC drill bit is used, during diameter drilling operation, when a hard object is encountered, the PDC drill bit body 100 can generate a hard impact force with the hard object, when the PDC drill bit body 100 moves to be in contact with the hard object, the PDC drill bit body is limited to continue to move downwards, the rectangular rod 5 is further limited to continue to move downwards, meanwhile, the downward force drives the installation rod 1 to slide downwards on the rectangular rod 5, the installation rod 1 drives the square rod 11 to slide downwards in the square groove, the buffer spring 6 is buffered while the installation rod 1 moves downwards, under the elastic action of the buffer spring 6, the hard impact force of the PDC drill bit body 100 in the diameter drilling process can be effectively relieved, and the risk that the PDC drill bit body 100 is damaged due to the fact that the hard impact force is large is reduced;
when the elastic force of the buffer spring 6 is soft, the shaking amplitude of the PDC drill bit body 100 is easily large in the process of drilling the diameter, and further the diameter drilling operation is influenced, when the elastic force of the buffer spring 6 is required to be adjusted according to the use requirement, the square rod 11 is driven to rotate by the forward rotation knob 16, under the action of the square groove formed in the screw rod 10, the screw rod 10 is driven to rotate by the square rod 11 through the square groove, under the action of the threaded hole formed in the moving block 8, the screw rod 10 rotates to drive the moving block 8 to move upwards, the moving block 8 slides upwards on the two positioning rods 9, the moving block 8 drives the pressure adjusting block 4 to move upwards, the buffer spring 6 is compressed while the pressure adjusting block 4 moves upwards, the initial state of the buffer spring 6 is in a slightly compressed or semi-compressed state, the compression stroke of the buffer spring is shortened, and the damping elastic force of the buffer spring 6 in the compressed state on the PDC drill bit body 100 is increased, therefore, the buffering force is changed, the shaking amplitude of the PDC drill bit body 100 during the diameter drilling process is reduced, the elasticity of the buffer spring 6 can be adjusted according to actual needs, the bouncing amplitude and the buffering force can be properly balanced and adjusted, the bouncing amplitude is reduced while the hard impact force is effectively relieved, and the normal work of the PDC drill bit body 100 is ensured;
when the PDC drill bit body 100 is required to be taken down from the installation rod 1, the first T-shaped fastening bolt 13 can be rotated in the forward direction, the first T-shaped fastening bolt 13 is moved out of the first thread groove 4 when rotating, the PDC drill bit body 100 can be moved downwards and taken down from the installation rod 1, and the PDC drill bit body 100 can be replaced independently by a worker.
In the description of the present application, it should be further noted that, unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may include, for example, a fixed connection, a detachable connection, an integral connection, a mechanical connection, an electrical connection, a direct connection, a connection through an intermediate medium, and a connection between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to specific circumstances.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (8)
1. A PDC drill bit with a buffering function for drilling engineering comprises a PDC drill bit body (100), wherein a clamping preventing groove (101) and a circular truncated cone body (102) located above the clamping preventing groove (101) are formed in the PDC drill bit body (100), a drill bit connecting rod (103) is arranged above the PDC drill bit body (100), the PDC drill bit is characterized in that a first rectangular groove (2) is formed in the top of the PDC drill bit body (100), an installation rod (1) is slidably sleeved in the first rectangular groove (2), the top end of the installation rod (1) extends to the upper portion of the PDC drill bit body (100) and is in threaded fixing with the bottom end of the drill bit connecting rod (103), a rectangular rod (5) is fixed to the inner wall of the bottom of the first rectangular groove (2) in a threaded manner, a second rectangular groove (3) is formed in the bottom end of the installation rod (1), the top end of the rectangular rod (5) extends to the second rectangular groove (3), a buffering spring (6) is movably sleeved on the rectangular rod (5), the top end of the buffer spring (6) is fixedly connected with the bottom end of the mounting rod (1), the rectangular rod (5) is provided with an elastic pressure regulating mechanism, and the elastic pressure regulating mechanism is fixedly connected with the bottom end of the buffer spring (6).
2. The PDC drill bit with the buffering function for the drilling engineering, as claimed in claim 1, wherein the elastic pressure regulating mechanism comprises a pressure regulating block (4) slidably sleeved on a rectangular rod (5), the top of the pressure regulating block (4) is fixedly connected with the bottom end of a buffer spring (6), a first rectangular hole (7) is formed in one side of the rectangular rod (5), a screw (10) is rotatably mounted on the inner wall of the bottom of the first rectangular hole (7), the top end of the screw (10) extends into a second rectangular groove (3), a moving block (8) is threadedly sleeved on the screw (10), the pressure regulating block (4) is fixedly mounted on the moving block (8), two positioning rods (9) are fixedly mounted between the inner wall of the top and the inner wall of the bottom of the first rectangular hole (7), the screw (10) is located between the two positioning rods (9), the moving block (8) is slidably sleeved on the two positioning rods (9), be equipped with square bar (11) in second rectangular channel (3), screw rod (10) slip cover is established on square bar (11), and the front side of installation pole (1) is opened and is equipped with first through-hole (15), and fixedly connected with knob (16) in the top of square bar (11) extends to first through-hole (15), and installation pole (1) rotates the cover and establishes on square bar (11).
3. The PDC drill bit with the buffering function for the drilling engineering according to claim 1, wherein a first mounting block (12) is fixedly connected to the bottom end of the rectangular rod (5), a first clamping groove is formed in the inner wall of the bottom of the first rectangular groove (2), the outer side of the first mounting block (12) is in movable contact with the inner wall of the first clamping groove, a first threaded groove (14) is formed in the right side of the first mounting block (12), a first T-shaped fastening bolt (13) is sleeved in the first threaded groove (14) in a threaded manner, a groove is formed in the right side of the PDC drill bit body (100), the right side of the first T-shaped fastening bolt (13) extends into the groove, and the PDC drill bit body (100) is sleeved on the first T-shaped fastening bolt (13) in a threaded manner.
4. The PDC drill bit with the buffering function for the drilling engineering according to claim 1, wherein a second clamping groove is formed in the bottom end of the drill bit connecting rod (103), a second mounting block (17) is fixedly connected to the top end of the mounting rod (1), the outer side of the second mounting block (17) is in movable contact with the inner wall of the second clamping groove, a second threaded groove is formed in the right side of the second mounting block (17), a second T-shaped fastening bolt is sleeved in the second threaded groove in a threaded manner, the right side of the second T-shaped fastening bolt extends to the right side of the drill bit connecting rod (103), and the drill bit connecting rod (103) is sleeved in the second T-shaped fastening bolt in a threaded manner.
5. The PDC drill bit with the buffering function for the drilling engineering as claimed in claim 2, wherein a threaded hole and two rectangular through holes are formed in the top of the moving block (8), the threaded hole is in threaded connection with the screw rod (10), and the inner walls of the rectangular through holes are in sliding connection with the outer sides of the corresponding positioning rods (9).
6. The PDC drill bit with the buffering function for the drilling engineering as claimed in claim 2, wherein a first circular hole is formed in the bottom inner wall of the first rectangular hole (7), a first bearing is fixedly sleeved in the first circular hole, a second circular hole is formed in the top inner wall of the first rectangular hole (7), two second bearings are fixedly sleeved in the second circular hole, and the inner side of the inner ring of the first bearing and the inner side of the inner ring of the second bearing are fixedly connected with the outer side of the screw (10).
7. The PDC drill bit with the buffering function for the drilling engineering as claimed in claim 2, wherein a second rectangular hole is formed in the top of the pressure regulating block (4), the inner wall of the second rectangular hole is slidably connected with the outer side of the rectangular rod (5), and the inner walls of two sides of the second rectangular hole are fixedly connected with two sides of the moving block (8) respectively.
8. The PDC drill bit with the buffering function for the drilling engineering according to claim 2, wherein a square groove is formed at the top end of the screw (10), and the inner wall of the square groove is in sliding connection with the outer side of the square rod (11).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121592853.0U CN215256048U (en) | 2021-07-14 | 2021-07-14 | PDC drill bit for drilling engineering with buffer function |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121592853.0U CN215256048U (en) | 2021-07-14 | 2021-07-14 | PDC drill bit for drilling engineering with buffer function |
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| CN215256048U true CN215256048U (en) | 2021-12-21 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114893128A (en) * | 2022-07-15 | 2022-08-12 | 中石化西南石油工程有限公司 | Drill bit for petroleum drilling and preparation process thereof |
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2021
- 2021-07-14 CN CN202121592853.0U patent/CN215256048U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114893128A (en) * | 2022-07-15 | 2022-08-12 | 中石化西南石油工程有限公司 | Drill bit for petroleum drilling and preparation process thereof |
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Effective date of registration: 20230505 Address after: 15th Floor, Building A, No. 688, Jitai Road, High-tech Zone, Chengdu, Sichuan 610000 Patentee after: Sinopec Southwest Petroleum Engineering Co.,Ltd. Patentee after: SINOPEC SOUTHWEST PETROLEUM ENGINEERING Co.,Ltd. CHONGQING DRILLING BRANCH Address before: No. 518, machao East Road section, Xiangcheng Avenue, Xindu District, Chengdu, Sichuan 610500 Patentee before: Qiu Jian |