CN111877993A - Novel hook type drag bit - Google Patents
Novel hook type drag bit Download PDFInfo
- Publication number
- CN111877993A CN111877993A CN202010769974.1A CN202010769974A CN111877993A CN 111877993 A CN111877993 A CN 111877993A CN 202010769974 A CN202010769974 A CN 202010769974A CN 111877993 A CN111877993 A CN 111877993A
- Authority
- CN
- China
- Prior art keywords
- cutter
- fixed
- drag bit
- cutter arbor
- hook
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 239000002689 soil Substances 0.000 claims description 3
- 238000005553 drilling Methods 0.000 abstract description 34
- 238000010276 construction Methods 0.000 abstract description 7
- 239000004927 clay Substances 0.000 description 17
- 239000002893 slag Substances 0.000 description 12
- 239000011435 rock Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 238000000926 separation method Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/42—Rotary drag type drill bits with teeth, blades or like cutting elements, e.g. fork-type bits, fish tail bits
- E21B10/43—Rotary drag type drill bits with teeth, blades or like cutting elements, e.g. fork-type bits, fish tail bits characterised by the arrangement of teeth or other cutting elements
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B12/00—Accessories for drilling tools
- E21B12/06—Mechanical cleaning devices
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses a novel hook type scraper drill bit which comprises a supporting cylinder, wherein a knife rest is fixed at the bottom of the supporting cylinder, a plurality of hook type cutters are fixed on the knife rest, each hook type cutter comprises an arc-shaped cutter bar and a scraper fixed on the inner side of one end of the cutter bar, and the other end of the cutter bar is fixed on the knife rest. The invention can effectively reduce the phenomenon of mud-covered drilling, improve the drilling efficiency, shorten the construction period, save energy, improve the brand of companies, has certain social benefit, can effectively prolong the service life of the cutter, reduce the construction cost and has certain economic benefit.
Description
Technical Field
The invention relates to the field of drilling construction equipment, in particular to a novel hook type drag bit.
Background
In the construction by adopting the well drilling method, when a clay layer is drilled, the clay is easy to be adhered to the surface of a drill bit and a cutter, and the phenomenon of mud-coated drilling is frequently caused. Because the clay drilling slag is wrapped, a cutter of the drill bit cannot be in direct contact with a rock stratum surface, so that the rock breaking efficiency is influenced, and the drilling efficiency is reduced; meanwhile, the mud bag drill can prevent mud from effectively cooling the cutter in time, so that the service life of the cutter is shortened. The mud-coated drilling phenomenon in drilling construction seriously affects the drilling and well building period, causes a great amount of time loss and waste of extra materials, and greatly increases the drilling cost.
Disclosure of Invention
The invention aims to solve the technical problem of providing a novel hook type drag bit which can effectively reduce the phenomenon of mud bag drilling.
In order to solve the technical problems, the invention adopts the following technical scheme: the utility model provides a novel crotch formula drag bit, includes the support barrel, the bottom of supporting the barrel is fixed with the knife rest, be fixed with a plurality of crotch formula cutters on the knife rest, crotch formula cutter is including being curved cutter arbor and fixing the inboard scraper of one end of cutter arbor, the other end of cutter arbor is fixed on the knife rest.
Furthermore, a soil retaining plate is fixed on the outer side of the middle part of the cutter bar of the hook type cutter.
Furthermore, the tool rest is designed in a frustum shape with a large upper part and a small lower part, and the hook type tools are radially arranged on the conical surface of the tool rest.
Further, hook formula cutter still includes the cutter arbor seat, the other end outside of cutter arbor is equipped with the stopper that is the shape of falling L, it has spacing hole to open on the cutter arbor seat, the cutter arbor seat is contradicted the other end outside of cutter arbor, just the salient card of stopper is gone into spacing downthehole, the cutter arbor seat with through bolt interconnect between the cutter arbor, the cutter arbor seat is fixed on the knife rest.
The fishtail knife assembly comprises a supporting plate and a plurality of knife bodies, the supporting plate is fixed at the center of the bottom of the supporting cylinder body, the bottom edge of the supporting plate is in a V shape, the knife bodies are fixed at the bottom edge of the supporting plate at intervals, and the supporting plate downwards exceeds each hook-type knife.
Furthermore, a plurality of edge knives are fixed on the peripheral edge of the bottom of the supporting cylinder body.
Furthermore, the periphery of the upper end of the supporting cylinder body is provided with a ring of upper wear-resistant rings, and the periphery of the lower end of the supporting cylinder body is provided with a ring of lower wear-resistant rings.
Further, still including the cover establish support the internal center tube of barrel, just the upper and lower both ends of center tube all surpass support the barrel.
Further, still include the tuber pipe, the tuber pipe is located the top of support barrel, the one end of tuber pipe designs up, the other end of tuber pipe with the center tube intercommunication.
The support barrel further comprises a flange plate, and the flange plate is fixed to the top of the support barrel through a plurality of wing plates.
The invention has the beneficial effects that:
the invention designs a hook type cutter which is matched and installed on a drill bit, in the drilling process, clay drilling slag moves along a cutter bar, and the cutter bar is not linear, so the movement path of the clay drilling slag gradually deviates from the cutter bar, the clay drilling slag is difficult to continuously flow to adhere to the cutter bar, the separation of argillaceous debris and the cutter is realized, the clay drilling slag is difficult to adhere to the cutter, the mud pocket drilling phenomenon is reduced, and the clay layer drilling efficiency is improved.
The invention can improve the drilling efficiency, shorten the construction period, save energy, promote the company brand and have certain social benefit. Meanwhile, the service life of the cutter can be effectively prolonged, the construction cost is reduced, and certain economic benefits are achieved.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Fig. 2 is a schematic structural view of a hook cutter according to an embodiment of the present invention.
The components in the drawings are labeled as follows: the device comprises a support barrel 1, a tool rest 11, an upper wear-resistant ring 12, a lower wear-resistant ring 13, a wing plate 14, a hook-type tool 2, a tool bar 21, a scraper 22, a soil retaining plate 23, a tool bar seat 24, a limiting hole 25, a limiting block 26, a bolt 27, a fishtail tool set 3, a support plate 31, a tool body 32, a side tool 4, a central tube 5, an air duct 6 and a flange plate 7.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The embodiments and features of the embodiments in the present application may be combined with each other without conflict. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" appearing throughout includes three juxtapositions, exemplified by "A and/or B" including either A or B or both A and B. In addition, "a plurality" means two or more. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
See fig. 1 and 2.
The novel hook type scraper drill bit comprises a supporting cylinder body 1, wherein a knife rest 11 is fixed at the bottom of the supporting cylinder body 1, a plurality of hook type cutters 2 are fixed on the knife rest 11, each hook type cutter 2 comprises an arc-shaped cutter bar 21 and a scraper 22 fixed on the inner side of one end of the cutter bar 21, and the other end of the cutter bar 21 is fixed on the knife rest 11.
The invention designs a hook type cutter which is matched and installed on a drill bit, in the drilling process, clay drilling slag moves along a cutter bar, and the cutter bar is not linear, so the movement path of the clay drilling slag gradually deviates from the cutter bar, the clay drilling slag is difficult to continuously flow to adhere to the cutter bar, the separation of argillaceous debris and the cutter is realized, the clay drilling slag is difficult to adhere to the cutter, the mud pocket drilling phenomenon is reduced, and the clay layer drilling efficiency is improved.
In one embodiment, the tool holder 11 is designed in a frustum shape with a large top and a small bottom, and a plurality of hook-type tools 2 are radially arranged on the conical surface of the tool holder. The conventional tool rest is mostly plate-shaped, and the tool rest is redesigned to be frustum-shaped, so that the surface area of the tool rest is greatly reduced, the adhesion probability of clay drilling slag and the tool rest is reduced, and the drilling efficiency of a clay layer is improved.
In one embodiment, a retaining plate 23 is fixed to the outer side of the middle portion of the shank 21 of the hook cutter 2. When drilling, the cut clay drilling slag can move along the radian of the cutter bar to reach the earth retaining plate, and under the action of the earth retaining plate, the argillaceous rock debris can be separated from the scraper, so that the effect of separating the clay drilling slag is further improved.
In an embodiment, the cutter bar fixing device further comprises a cutter bar seat 24, a limiting block 26 in an inverted L shape is arranged on the outer side of the other end of the cutter bar 21, a limiting hole 25 is formed in the cutter bar seat 24, the cutter bar seat 24 abuts against the outer side of the other end of the cutter bar 21, the protruding portion of the limiting block 26 is clamped into the limiting hole 25, the cutter bar seat 24 is connected with the cutter bar 21 through a bolt 27, and the cutter bar seat 24 is fixed on the cutter frame 11. The design like this, when the cutter is pulled down to needs, can take off the bolt, just can make cutter arbor and cutter arbor seat separation to make things convenient for the later maintenance of cutter, and under the limiting displacement of spacing hole and stopper, the installation of cutter is more stable, reliable.
In one embodiment, the fishtail knife group 3 is further included, the fishtail knife group 3 includes a support plate 31 fixed at the bottom center of the support cylinder 1 and having a V-shaped bottom edge, and a plurality of knife bodies 32 fixed at the bottom edge of the support plate 31 at intervals, and the support plate 31 extends downward beyond each hook-type knife 2. During the drilling process, the fishtail cutter can cut the rock stratum in advance, the integrity of the rock stratum is damaged, the strength is reduced, and the quick drilling is facilitated.
In one embodiment, a plurality of edge knives 4 are fixed on the peripheral edge of the bottom of the support cylinder 1. The edge cutter is used for cutting the well wall edge.
In one embodiment, the periphery of the upper end of the support cylinder 1 is provided with a circle of upper wear-resistant ring 12, and the periphery of the lower end of the support cylinder 1 is provided with a circle of lower wear-resistant ring 13. So as to increase the wear resistance of the supporting cylinder body and prolong the service life.
In an embodiment, the device further comprises a central tube 5 sleeved in the support cylinder 1, and the upper end and the lower end of the central tube 5 both exceed the support cylinder 1. The central pipe is used for mud backflow.
In an embodiment, the air pipe 6 is further included, the air pipe 6 is located above the support cylinder 1, one end of the air pipe 6 is designed to face upwards, and the other end of the air pipe 6 is communicated with the central pipe 5. The air pipe is used for inputting high-pressure air to the working surface, so that the air pressure is increased, and the slurry flows back.
In one embodiment, the device further comprises a flange 7, and the flange 7 is fixed on the top of the support cylinder 1 through a plurality of wing plates 14. By the design, the drill bit can be fixedly connected with other required equipment through the flange plate, and the practicability is better.
It should be understood that the examples and embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the present disclosure, and that various modifications or changes in light thereof will be suggested to persons skilled in the art and are to be included within the spirit and purview of this disclosure.
Claims (10)
1. The utility model provides a novel hook formula drag bit, includes the support barrel, the bottom of supporting the barrel is fixed with knife rest, its characterized in that: be fixed with a plurality of crotch formula cutters on the knife rest, crotch formula cutter is including being curved cutter arbor and fixing the inboard scraper of one end of cutter arbor, the other end of cutter arbor is fixed on the knife rest.
2. The novel hook drag bit of claim 1, wherein: and a soil retaining plate is fixed on the outer side of the middle part of the cutter bar of the hook type cutter.
3. The new hook drag bit of claim 1 or 2, wherein: the tool rest is designed in a frustum shape with a large upper part and a small lower part, and the hook type tools are radially arranged on the conical surface of the tool rest.
4. The new hook drag bit of claim 1 or 2, wherein: still include the cutter arbor seat, the other end outside of cutter arbor is equipped with the stopper that is the shape of falling L, it has spacing hole to open on the cutter arbor seat, the cutter arbor seat is contradicted the other end outside of cutter arbor, just the protruding part card of stopper is gone into spacing downthehole, the cutter arbor seat with through bolt interconnect between the cutter arbor, the cutter arbor seat is fixed on the knife rest.
5. The new hook drag bit of claim 1 or 2, wherein: the fishtail knife assembly comprises a supporting plate and a plurality of knife bodies, the supporting plate is fixed at the center of the bottom of the supporting cylinder body, the bottom edge of the supporting plate is in a V shape, the knife bodies are fixed at the bottom edge of the supporting plate at intervals, and the supporting plate downwards exceeds each hook type knife.
6. The new hook drag bit of claim 1 or 2, wherein: and a plurality of edge cutters are fixed on the peripheral edge of the bottom of the supporting cylinder body.
7. The new hook drag bit of claim 1 or 2, wherein: the periphery of the upper end of the supporting cylinder body is provided with a ring of upper wear-resistant rings, and the periphery of the lower end of the supporting cylinder body is provided with a ring of lower wear-resistant rings.
8. The new hook drag bit of claim 1 or 2, wherein: the support barrel is characterized by further comprising a central tube sleeved in the support barrel, and the upper end and the lower end of the central tube both exceed the support barrel.
9. The novel hook drag bit of claim 5, wherein: the air pipe is positioned above the supporting cylinder, one end of the air pipe is designed upwards, and the other end of the air pipe is communicated with the central pipe.
10. The new hook drag bit of claim 1 or 2, wherein: the support barrel is characterized by further comprising a flange plate, wherein the flange plate is fixed to the top of the support barrel through a plurality of wing plates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010769974.1A CN111877993A (en) | 2020-08-03 | 2020-08-03 | Novel hook type drag bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010769974.1A CN111877993A (en) | 2020-08-03 | 2020-08-03 | Novel hook type drag bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111877993A true CN111877993A (en) | 2020-11-03 |
Family
ID=73210104
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010769974.1A Pending CN111877993A (en) | 2020-08-03 | 2020-08-03 | Novel hook type drag bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111877993A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206816180U (en) * | 2017-05-25 | 2017-12-29 | 中铁建大桥工程局集团第四工程有限公司 | A kind of boring three wings drag bit |
| CN206860103U (en) * | 2017-05-31 | 2018-01-09 | 中建八局浙江建设有限公司 | Rotary drilling machine drill bit |
| CN109673178A (en) * | 2017-10-18 | 2019-04-26 | 王晶晶 | The designing technique of rotary plough coulter blade cambered surface angle |
| CN212406596U (en) * | 2020-08-03 | 2021-01-26 | 中煤特殊凿井有限责任公司 | Novel hook type drag bit |
-
2020
- 2020-08-03 CN CN202010769974.1A patent/CN111877993A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206816180U (en) * | 2017-05-25 | 2017-12-29 | 中铁建大桥工程局集团第四工程有限公司 | A kind of boring three wings drag bit |
| CN206860103U (en) * | 2017-05-31 | 2018-01-09 | 中建八局浙江建设有限公司 | Rotary drilling machine drill bit |
| CN109673178A (en) * | 2017-10-18 | 2019-04-26 | 王晶晶 | The designing technique of rotary plough coulter blade cambered surface angle |
| CN212406596U (en) * | 2020-08-03 | 2021-01-26 | 中煤特殊凿井有限责任公司 | Novel hook type drag bit |
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