CN208578516U - A kind of gear wheel PDC drill bit palm bindiny mechanism - Google Patents
A kind of gear wheel PDC drill bit palm bindiny mechanism Download PDFInfo
- Publication number
- CN208578516U CN208578516U CN201821191087.5U CN201821191087U CN208578516U CN 208578516 U CN208578516 U CN 208578516U CN 201821191087 U CN201821191087 U CN 201821191087U CN 208578516 U CN208578516 U CN 208578516U
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- China
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- drill bit
- pdc drill
- wheel carrier
- palm
- dovetail groove
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Abstract
The utility model relates to a kind of gear wheel PDC drill bit palm bindiny mechanisms.Mainly solves the problems, such as the easy lost cone palm of gear wheel PDC drill bit in the drilling process of existing deep formation.It is characterized by: drill body (2) two sides are respectively provided with a dovetail groove (4), there is an antirotation keys (5) inside dovetail groove (4)；Dovetail groove (6) on the inside of a wheel carrier is provided on the inside of each wheel carrier (3)；Dovetail groove (6) and antirotation keys (5) cooperate on the inside of wheel carrier, and after limit, PDC drill bit ontology (2) and wheel carrier (3) junction surrounding are welded.The gear wheel PDC drill bit palm bindiny mechanism, can be improved drill bit safety, palm is effectively reduced and falls risk, can be improved bit life.
Description
Technical field
The utility model relates to petroleum drilling technology field, in particular to a kind of gear wheel PDC drill bit palm bindiny mechanism.
Background technique
Deep Drilling Techniques, in occupation of vital status, there is wide hair in the exploration and exploitation of petroleum resources
Open up space and development prospect.For deep-well, the drilling cost of deep formation is in total drilling cost in occupation of sizable
Specific gravity.And deep well section drilling fluid density is high, the drillability of rock is poor.Especially deep layer rock strength is high, deep layer complex lithology, rock
Stone hardness is high, seriously affects the process of deep layer exploration exploitation.And existing gear wheel and PDC drill bit can not solve deep formation and generally deposit
Rock is hard, grinding extreme value is high, leading to single, footage per bit is few, bit life is short, rate of penetration is low.PDC is bored
Head fractured rock in a manner of scraping, but hard formation PDC tooth depth of tooth penetration is small, and stock-removing efficiency is low, and increasing bit pressure again damages easily PDC tooth
Hurt, drilling speed and service life are lower in hard formation；Rock bit forms tooth hole to impact fractured rock in a manner of crushing on rock, but
It is small that tooth hole is formed on hard formation, stiff plastic stratum, rock, influences stock-removing efficiency.The comprehensive rock bit of gear wheel PDC drill bit and
The broken rock feature of PDC drill bit combines shearing and impact grinding, improves drill bit in broken formation and compared with the machine of competent bed
Tool drilling speed.Existing to weld PDC drill bit and rock bit when using in the drilling process of deep formation, there are gear wheel PDC brills
The risk of head easily lost cone palm, greatly reduces the service life of drill bit.
Summary of the invention
Technical problem to be solved in the utility model is to overcome the drilling well of existing deep formation present in background technique
In the process the problem of gear wheel PDC drill bit easy lost cone palm, and a kind of gear wheel PDC drill bit palm bindiny mechanism is provided, the gear wheel
PDC drill bit palm bindiny mechanism, can be improved drill bit safety, and palm is effectively reduced and falls risk, can be improved bit life.
The invention for solving the technical problem can reach by following technical solution: the gear wheel PDC drill bit palm connects machine
Structure, including PDC drill bit ontology, two gear wheels and wheel carrier, gear wheel are fixed on wheel carrier, and the drill body two sides are each
It is provided with a dovetail groove, there are an antirotation keys inside dovetail groove；Swallow on the inside of a wheel carrier is provided on the inside of each wheel carrier
Stern notch；Dovetail groove and antirotation keys cooperate on the inside of wheel carrier, after limit, PDC drill bit ontology and wheel carrier junction surrounding into
Row welding.
The utility model can have the following beneficial effects: that the gear wheel PDC drill bit palm connects compared with above-mentioned background technique
Connection mechanism makes the broken rock feature of gear wheel PDC drill bit comprehensive rock bit and PDC drill bit, shearing and impact grinding is combined, mentioned
High drill bit is in broken formation and compared with the rate of penetration of competent bed.Wheel carrier and PDC drill bit ontology connecting portion are using cunning
Slot type structure, wheel carrier two sides and PDC drill bit ontology dovetail groove cooperate, dovetail groove and PDC drill bit ontology on the inside of wheel carrier
Antirotation keys cooperate in dovetail groove, are welded after being limited by two oat tail groove structures, and bonding strength is increased, and improve drill bit peace
Quan Xing, and then improve drilling life of bit.
Detailed description of the invention
Attached drawing 1 be the utility model connection after the completion of overall structure diagram；
Attached drawing 2 is the main view of the utility model PDC drill bit ontology；
Attached drawing 3 is the top view of the utility model PDC drill bit ontology；
Attached drawing 4 is the main view of wheel carrier；
Attached drawing 5 is the top view of wheel carrier.
In figure: 1. gear wheels；2.PDC drill body；3. wheel carrier；4. dovetail groove；5. antirotation keys；6. on the inside of wheel carrier
Dovetail groove.
Specific embodiment:
The utility model is described in further detail with reference to the accompanying drawing:
As shown in Fig. 1, the gear wheel PDC drill bit palm bindiny mechanism, including PDC drill bit ontology 2, two gear wheels 1 and teeth
Palm 3 is taken turns, gear wheel 1 is fixed on wheel carrier 3；As shown in Figure 2 and Figure 3,2 two sides of drill body are respectively provided with a dovetail
Slot 4 has an antirotation keys 5 inside dovetail groove 4；As shown in Figure 4, Figure 5, it is provided on the inside of wheel carrier 3 on the inside of a wheel carrier
Dovetail groove 6；Dovetail groove 6 and antirotation keys 5 cooperate on the inside of wheel carrier, after limit, 3 junction of PDC drill bit ontology 2 and wheel carrier
Surrounding is welded；Groove is increased in the junction of PDC drill bit ontology 2 and wheel carrier 3, increases weld strength, reduces palm
Fall off risk, increases drill bit safety, reliability.
The gear wheel PDC drill bit palm bindiny mechanism is in use, be inserted into the dovetail groove on PDC drill bit ontology 2 for wheel carrier 3
In 4, cooperate dovetail groove 4 on 3 two sides of wheel carrier and PDC drill bit ontology 2, dovetail groove 6 and PDC drill bit sheet on the inside of wheel carrier
Antirotation keys 5 cooperate in 2 dovetail groove 4 of body, are welded after limit.Bonding strength is considerably increased, improves drill bit safety, in turn
Improve drilling life of bit.
Claims (1)
1. a kind of gear wheel PDC drill bit palm bindiny mechanism, including PDC drill bit ontology (2), two gear wheels (1) and wheel carrier
(3), gear wheel (1) is fixed on wheel carrier (3), it is characterised in that: drill body (2) two sides are respectively provided with a dovetail groove
(4), there is an antirotation keys (5) inside dovetail groove (4)；Dovetail on the inside of a wheel carrier is provided on the inside of each wheel carrier (3)
Slot (6)；Dovetail groove (6) and antirotation keys (5) cooperate on the inside of wheel carrier, after limit, PDC drill bit ontology (2) and wheel carrier (3)
Junction surrounding is welded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821191087.5U CN208578516U (en) | 2018-07-26 | 2018-07-26 | A kind of gear wheel PDC drill bit palm bindiny mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821191087.5U CN208578516U (en) | 2018-07-26 | 2018-07-26 | A kind of gear wheel PDC drill bit palm bindiny mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208578516U true CN208578516U (en) | 2019-03-05 |
Family
ID=65511272
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821191087.5U Active CN208578516U (en) | 2018-07-26 | 2018-07-26 | A kind of gear wheel PDC drill bit palm bindiny mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208578516U (en) |
-
2018
- 2018-07-26 CN CN201821191087.5U patent/CN208578516U/en active Active
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