CN205089237U - Drill collar - Google Patents
Drill collar Download PDFInfo
- Publication number
- CN205089237U CN205089237U CN201520811248.6U CN201520811248U CN205089237U CN 205089237 U CN205089237 U CN 205089237U CN 201520811248 U CN201520811248 U CN 201520811248U CN 205089237 U CN205089237 U CN 205089237U
- Authority
- CN
- China
- Prior art keywords
- drill collar
- transition body
- construction
- drill
- counterweight
- 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.)
- Expired - Fee Related
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Abstract
The utility model discloses a drill collar is by at least seven part welding to it constitutes to inject the counter weight. The utility model discloses simple structure, it is workable, the equipment of being convenient for, the drill collar diameter is put on airs to the counter weight of design weight through filling to realize that large -tonnage operation and focus are low, above -mentioned structure requires not highly to driving system, safe easy operation, behind the drill collar jointed rod, need not to dismantle in whole engineering, alleviateed working strength, practiced thrift the engineering time, thoroughly the not enough technological problem of heavy -calibre weight on bit in the current construction of solution has improved the efficiency of construction, simple manufacture, convenient to use, safe and reliable, durable. Realize really that the large -tonnage suspends the pendulum decompression in midair and creeps into, operate steadily that work efficiency is high, support time is few, practices thrift the cost, and field constructions such as using simple, low in labor strength, the dark heavy -calibre gas drainage well of specially adapted, pumping shaft, bilge well, emergent passway for escaping, material transport drilling is connected to safety fast.
Description
Technical field
The utility model relates to a kind of drill collar, belongs to well drilling tool technical field.
Background technology
Drill collar is in the foot of drill string, is the chief component of bottomhole assembly.There is larger gravity and rigidity.Drill collar in drilling process main rise following in, one is apply the pressure of the drill to drill bit; Two is the necessary intensity under guarantee contractive condition; Three be alleviate drill bit vibration, swing and beat, make bit operation steady; Four is control hole deviation.
Existing drill collar is generally cast steel manufacture, diameter is at Φ 120 ~ Φ 228mm, length 9.5m/ saves left and right, in fields such as dark heavy caliber gas pumping well, catch pit, sink hole, emergency escape passage, mass transport borings, existing drill collar existing problems mainly contain: 1, because material is cast steel, comparatively light, be only applicable to small-bore boring.2, the pressure of the drill is limited, and as realized wammel pressure, must connect many drill collars, center of gravity is high, easy deflection of holing, and between drill collar, screw thread easily comes off and causes the accident.3, drill collar connects too much, causes drill set to install and remove the labour intensity separated large.4, in big diameter borehole construction, large the pressure of the drill cannot be realized, lowly turn fast drilling.
Summary of the invention
The purpose of this utility model is to overcome deficiency of the prior art, there is provided one really to realize the decompression of large-tonnage suspention pendulum to creep into, operate steadily, operating efficiency is high, and non-cutting time is few, cost-saving, fast and safely, connect application simple, labour intensity is low, is specially adapted to the drill collar of the field constructions such as dark heavy caliber gas pumping well, catch pit, sink hole, emergency escape passage, mass transport boring.
For achieving the above object, the technological means that the utility model adopts is: a kind of drill collar, is welded by least seven block parts, and pours into counterweight composition.
Further, described seven block parts are upper flange, upper transition body, central tube, outer tube, lower transition body, lower flange.
Further, described upper transition body one end is connected with upper flange, and the other end is connected with one end of central tube and outer tube, described lower transition body one end is connected with lower flange, the other end is connected with the other end of central tube and outer tube, between central tube and outer tube, form cavity, and counterweight pours in cavity.
Further, described counterweight is metal.
Further, described counterweight is than great, low-melting metal.
Further, described counterweight is plumbous.
Further, described upper flange, lower flange, upper transition body and lower transition body material are ZG30Cr.
Further, described upper transition body or lower transition body are provided with filling counterweight hole.
The beneficial effects of the utility model are: seven block parts are welded to form, and structure is simple, easily processes, and are convenient to assembling; By pouring into the counterweight of designed weight, drill collar diameter is done greatly, thus realize large-tonnage operation and center of gravity is low; Said structure is less demanding to dynamical system, and safety is easy to operate; After drill collar jointed rod, without the need to dismounting in whole engineering, alleviate working strength, saved the engineering time; The technical barrier of thorough solution existing construction Large diameter the pressure of the drill deficiency, improves efficiency of construction; Make simple, easy to use, safe and reliable, durable in use.Really realize the decompression of large-tonnage suspention pendulum to creep into, operate steadily, operating efficiency is high, non-cutting time is few, cost-saving, fast and safely, connect application simple, labour intensity is low, is specially adapted to the field constructions such as dark heavy caliber gas pumping well, catch pit, sink hole, emergency escape passage, mass transport boring.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further elaborated.
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the utility model dark heavy caliber gas pumping well drilling assembly schematic diagram.
In figure: 1, upper flange, 2, upper transition body, 3, plumbous, 4, central tube, 5, outer tube, 6, lower transition body, 7, lower flange, 8, fill with counterweight hole.
Detailed description of the invention
Drill collar as shown in Figure 1, processes welding by seven block parts, plumbous 3 cast of filling is in aggregates, in figure, and the preferred ZG30Cr of upper flange 1 material, uniform bolt hole on it, is welded to connect with upper transition body 2; The preferred ZG30Cr of upper transition body 2 material, connects upper flange 1 and central tube 4, outer tube 5, is all welded to connect, carries huge moment of torsion and transmitting torque; Melted by lead 3 and pour into cylindrical shell annulus along filling with counterweight hole 8, utilize it than great, the features such as fusing point is low, low price realize the large performance of structure weight, can realize large the pressure of the drill in big diameter borehole construction; Central tube 4 is welded to connect two ends transition body and carries the next moment of torsion of drilling rod transmission; Outer tube 5 gauge wear-resisting and with central, tubular circlewise cavity to realize plumbous pouring into; Lower transition body 6 is welded to connect central tube 4, outer tube 5 and lower flange 7, carries huge moment of torsion and transmitting torque; Lower flange 7 is welded to connect lower transition body 6, and connects bit body by high-strength bolt.
example:
(1), the ground of dark heavy caliber gas tube well construction aspect positive well of going into the well creeps into drilling assembly as shown in Figure 2.
The XX mining industry XXXX coal industry XXX ore deposit gas tube well of in March, 2013 ~ 2014 year construction in January, construction depth 807.65m, bore table soil Φ 1150/ basement rock Φ 870mm; This drill collar drilling assembly, security effectiveness is high.
The XX mining industry XX coal mine gas piping shaft of in March, 2014 ~ 2015 year construction in January, construction depth 517.00m, bore table soil Φ 1250/ basement rock Φ 960mm; This drill collar drilling assembly, security effectiveness is high.
The XX mining industry XX coal mine gas piping shaft of in March, 2015 ~ construction at present, construction depth 424.00m, bore table soil Φ 1400/ basement rock Φ 960mm; This drill collar drilling assembly, security effectiveness is high.
(2), dark heavy caliber blanking boring:
In October, 2014 ~ XX group XX coal industry blanking boring in December, construction construction depth 556.00m, bore table soil Φ 870/ basement rock Φ 560mm; This drill collar drilling assembly, security effectiveness is high.
In March, 2015 ~ XXXXX colliery blanking boring at present, construction construction depth 677.00m, bore table soil Φ 870/ basement rock Φ 560mm; This drill collar drilling assembly, security effectiveness is high.
The manufacture craft that the application preferably utilizes plumbous sexual valence when ripe, realizes drill collar and in dark big diameter borehole construction, solves positive well creep into the pressure of the drill problem, define a set of brand-new drilling assembly; Drill collar bottom is by Flange joint bit body, high-strength bolt is fastening, connect easy, short because drill collar is heavy, so center of gravity is on the lower side, the slow-speed of revolution runs again, creep into steadily, while realization suspention pendulum decompression drilling process, large the pressure of the drill can be realized again, improve efficiency of breaking rock, reduce labour intensity, reach the object of safe and efficient production.Therefore, the application provides one really to realize the decompression of large-tonnage suspention pendulum and creeps into, operate steadily, operating efficiency is high, and non-cutting time is few, cost-saving, fast and safely, connect application simple, labour intensity is low, is specially adapted to the drill collar of the field constructions such as dark heavy caliber gas pumping well, catch pit, sink hole, emergency escape passage, mass transport boring.
Although give detailed description and explanation to detailed description of the invention of the present utility model above; but what should indicate is; we can carry out various equivalence according to conception of the present utility model to above-mentioned embodiment and change and amendment; its function produced do not exceed that manual contains yet spiritual time, all should within protection domain of the present utility model.
Claims (6)
1. a drill collar, it is characterized in that: welded by least seven block parts, and pour into counterweight composition, described seven block parts are upper flange (1), upper transition body (2), central tube (4), outer tube (5), lower transition body (6), lower flange (7), described upper transition body (2) one end is connected with upper flange (1), the other end is connected with one end of central tube (4) and outer tube (5), described lower transition body (6) one end is connected with lower flange (7), the other end is connected with the other end of central tube (4) and outer tube (5), cavity is formed between central tube (4) and outer tube (5), counterweight pours in cavity.
2. drill collar according to claim 1, is characterized in that: described counterweight is metal.
3. drill collar according to claim 2, is characterized in that: described counterweight for than great, low-melting metal.
4. drill collar according to claim 3, is characterized in that: described counterweight is for plumbous.
5. drill collar according to claim 1, is characterized in that: described upper flange (1), lower flange (7), upper transition body (2) and lower transition body (6) material are ZG30Cr.
6. drill collar according to claim 1, is characterized in that: described upper transition body (2) or lower transition body (6) are provided with and fill with counterweight hole (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520811248.6U CN205089237U (en) | 2015-10-20 | 2015-10-20 | Drill collar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520811248.6U CN205089237U (en) | 2015-10-20 | 2015-10-20 | Drill collar |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205089237U true CN205089237U (en) | 2016-03-16 |
Family
ID=55479938
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520811248.6U Expired - Fee Related CN205089237U (en) | 2015-10-20 | 2015-10-20 | Drill collar |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205089237U (en) |
-
2015
- 2015-10-20 CN CN201520811248.6U patent/CN205089237U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160316 Termination date: 20161020 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |