CN203420632U - Underground hydraulic tool for well drilling - Google Patents
Underground hydraulic tool for well drilling Download PDFInfo
- Publication number
- CN203420632U CN203420632U CN201320499390.2U CN201320499390U CN203420632U CN 203420632 U CN203420632 U CN 203420632U CN 201320499390 U CN201320499390 U CN 201320499390U CN 203420632 U CN203420632 U CN 203420632U
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- piston mechanism
- drilling
- pressure
- tool
- piston
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Abstract
The utility model provides an underground hydraulic tool for well drilling, and belongs to the technical field of well drilling of petroleum, natural gas and coalbed methane. An inner cavity of a connection mechanism is connected with a piston mechanism, an inner cavity of the piston mechanism is connected with a pressure adjusting device, one end of the piston mechanism is connected with a hydraulic transmission mechanism, and the other end of the connection mechanism is connected with the hydraulic transmission mechanism. A combined seal is adopted between the piston mechanism and the connection mechanism, the two ends of the combined seal are respectively provided with a set of mud scraping ring, and packing seals, O-shaped seals with check rings and supporting rings for correction are arranged on the middle portion of the combined seal in an alternating mode. The combined seal is tightly pressed by nuts. The pressure adjusting device is regulated to adjust bit pressure, and the pressure adjusting device can be replaced before a tool enters a well, and is simple and convenient to use. The piston mechanism of the underground hydraulic tool is advanced and reliable in sealing, and can bear 20MPa pressure. The underground hydraulic tool can be applied to conventional rotary drilling, also can be applied to underground power tool drilling, can be used for plumb shaft operation, and also can be applied to operation of highly-deviated wells and horizontal wells.
Description
Technical field
The utility model relates to a kind of drilling well underground hydraulic instrument, belongs to petroleum and natural gas, CBM Drilling technical field.
Background technology
In conventional oil drilling well, the pressure of the drill that drill bit needs is that the drill collar weight by drill bit top provides, there are many inevitable disadvantages in this traditional rigid pressurized mode, as sent, bore that inhomogeneous, bouncing of drilling tool, drilling tool are crooked, false the pressure of the drill etc., these disadvantages are all having a strong impact on the life-span of rate of penetration, well track, drill bit and drilling tool.
In addition,, in order to solve hole trajectory control problem, people have reached object by the method that changes drilling tool structure, but have certain limitation.Aspect deviation control with drilling straight well, the general method that adopts high speed to hang up and beat although this method is effective, realizes in the situation that sacrificing rate of penetration, although NDS is reliable, more complicated, expends height.In order to address this problem, people have adopted many measures, and as Double Circular Bit, eccentric shaft connection etc., effect is all undesirable.
Therefore, the today more and more receiving publicity at bit speed and drilling benefit, people have developed the downhole tools such as hydraulic thruster and have solved the problems referred to above, but these downhole tools have, there is no regulator, bit port is had to requirement, therefore when bit port can not change, for the pressure of the drill that obtains needing, need to change pumpage or mud density, or between drill bit and instrument, increase certain drill collar, limited the realization of tool performance; Some fluid power pressure Hs have regulator, but are generally that jump ring is fixed, and dismounting is difficult for, and impact is used.
In addition, it seals withstand voltage 15MPa existing fluid power pressurizing tool, has limited to a certain extent range of application.Therefore, need to study a kind of novel underground hydraulic instrument and solve the problems referred to above.
Summary of the invention
In order to overcome the deficiencies in the prior art, the utility model provides a kind of drilling well underground hydraulic instrument.
Use a underground hydraulic instrument, the inner chamber of bindiny mechanism connects piston mechanism, the inner chamber Bonding pressure adjusting device of piston mechanism, and one end connecting fluid force transfer mechanism of piston mechanism, fluid power transmission mechanism is connected with the other end of bindiny mechanism; Between piston mechanism and bindiny mechanism, adopt combination sealing, respectively there is one group of mud-scraping ring at combination sealing two ends, and there is packing_seal middle part, with the O type sealing of back-up ring and alternately arrange with the Supporting ring of centralizing function, by clamp nut, compress.
One end of fluid power transmission mechanism is connected with drill bit.
The utility model has the advantages that: during use, with drill set, be incorporated into well, turn on pump circulating mud when drill bit approaches shaft bottom, mud is through drill string entering tool inner chamber, when mud flows out from drill bit, because pressure-regulating device and bit nozzle also have the throttling action of driller motor sometimes, at top drilling assembly mineralization pressure.The pressure differential of this pressure and annular space acts on the end face of piston mechanism 3, form thrust, promote piston mechanism 3 and drive that torque-transmitting mechanisms 4 is descending to pressurize to drill bit, promotion drill bit creeps into, and has realized fluid power flexible pressurizing, for drill bit provides, stablizes lasting the pressure of the drill, effectively control hole deviation, deviation control with drilling straight well, and can save part drill collar, alleviate rig load; The impulse stroke of fixed length has compensated slip out of control and has crept into, and can be used as the breeze way of transferring drilling tool, to prevent the generation of drilling string not well braked accident; Meanwhile, the relation flexibly connecting by drilling fluid and hydroelasticity principle of absorption, separate the vibrations of drill bit shaft bottom with upper tool part drill string, play hydraulic shock reduction effect, can effectively protect drilling tool and drill bit.
The utility model has the advantages that can be according to different duties, and the mode by conversion pressure regulator regulate the pressure of the drill, and this pressure-regulating device can change as required before instrument enters well, simple and easy to do; The piston mechanism sealing of this instrument uniqueness is advanced reliable, withstand voltage 20MPa.
The utility model can be used for conventional rotary drilling, also can be used for the drilling well of well dynamic instrument; Can be used for straight well operation, also can be used for high-angle wells and horizontal wells operation.
Accompanying drawing explanation
When considered in conjunction with the accompanying drawings, by the detailed description with reference to below, can more completely understand better the utility model and easily learn wherein many advantages of following, but accompanying drawing described herein is used to provide further understanding of the present utility model, form a part of the present utility model, schematic description and description of the present utility model is used for explaining the utility model, do not form improper restriction of the present utility model, as schemed wherein:
Fig. 1 is structural representation of the present utility model.
Fig. 2 adopts seal form structural representation between piston mechanism of the present utility model and bindiny mechanism.
Below in conjunction with drawings and Examples, the utility model is further illustrated.
The specific embodiment
Obviously, the many modifications and variations that those skilled in the art do based on aim of the present utility model belong to protection domain of the present utility model.
Embodiment 1: as shown in Figure 1 and Figure 2; use a underground hydraulic instrument, the inner chamber of bindiny mechanism 1 connects piston mechanism 3, the inner chamber Bonding pressure adjusting device 2 of piston mechanism 3; one end connecting fluid force transfer mechanism 4 of piston mechanism 3, fluid power transmission mechanism 4 is connected with the other end of bindiny mechanism 1;
Wherein, bindiny mechanism 1 is for connecting drilling tool transmitting torque, and pressure-regulating device 2 is for regulating the pressure of the drilling fluid of the instrument of flowing through, and piston mechanism 3 seals and produce the pressure of the drill, fluid power transmission mechanism 4 two ends are connected with piston mechanism 3 and drill bit respectively, and the pressure of the drill is passed to drill bit.
Fig. 2 is 1 combination sealing 5 that adopts seal form of the utility model piston mechanism 3 and bindiny mechanism, be characterized in that respectively there is one group of mud-scraping ring at two ends, there are some packing_seals middle part, with the O type sealing of back-up ring and alternately arrange with the Supporting ring of centralizing function, by clamp nut 6, compress, guarantee the reliability of sealing, stoped wellbore fluid and rock chip to be invaded in the gap of piston mechanism 3 and bindiny mechanism 1.
On pressure regulating mechanism 2, be processed with inside/outside in many ways as hexagonal structure, conveniently by special tooling, dismantle.
Every cover instrument is furnished with a plurality of pressure regulating mechanisms, can increase and decrease as required.
Pressure regulating mechanism 2 is connected with the drilling fluid passage of piston mechanism 3 by screw thread.
As mentioned above, embodiment of the present utility model is explained, but as long as not departing from fact inventive point of the present utility model and effect can have a lot of distortion, this will be readily apparent to persons skilled in the art.Therefore, within such variation is also all included in protection domain of the present utility model.
Claims (2)
1. a drilling well underground hydraulic instrument, is characterized in that the inner chamber of bindiny mechanism connects piston mechanism, the inner chamber Bonding pressure adjusting device of piston mechanism, and one end connecting fluid force transfer mechanism of piston mechanism, fluid power transmission mechanism is connected with the other end of bindiny mechanism; Between piston mechanism and bindiny mechanism, adopt combination sealing, respectively there is one group of mud-scraping ring at combination sealing two ends, and there is packing_seal middle part, with the O type sealing of back-up ring and alternately arrange with the Supporting ring of centralizing function, by clamp nut, compress.
2. a kind of drilling well underground hydraulic instrument according to claim 1, is characterized in that one end of fluid power transmission mechanism is connected with drill bit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320499390.2U CN203420632U (en) | 2013-08-15 | 2013-08-15 | Underground hydraulic tool for well drilling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320499390.2U CN203420632U (en) | 2013-08-15 | 2013-08-15 | Underground hydraulic tool for well drilling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203420632U true CN203420632U (en) | 2014-02-05 |
Family
ID=50019731
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320499390.2U Expired - Fee Related CN203420632U (en) | 2013-08-15 | 2013-08-15 | Underground hydraulic tool for well drilling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203420632U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106089126A (en) * | 2016-05-31 | 2016-11-09 | 张荣斌 | One send drill tools |
-
2013
- 2013-08-15 CN CN201320499390.2U patent/CN203420632U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106089126A (en) * | 2016-05-31 | 2016-11-09 | 张荣斌 | One send drill tools |
| CN106089126B (en) * | 2016-05-31 | 2018-07-17 | 徐州市苏文机械设备制造有限公司 | One kind sending drill tools |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140205 Termination date: 20210815 |