CN201915871U - Bypass valve of downhole motor - Google Patents
Bypass valve of downhole motor Download PDFInfo
- Publication number
- CN201915871U CN201915871U CN2010205628245U CN201020562824U CN201915871U CN 201915871 U CN201915871 U CN 201915871U CN 2010205628245 U CN2010205628245 U CN 2010205628245U CN 201020562824 U CN201020562824 U CN 201020562824U CN 201915871 U CN201915871 U CN 201915871U
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- bypass valve
- motor
- flechette
- hole
- motor stator
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Abstract
The utility model discloses a bypass valve of a downhole motor, which comprises a bypass valve, a motor stator casing, a motor stator rubber sleeve and a motor rotor, wherein the bypass valve is connected with the motor stator casing through screw threads which are matched; the motor stator rubber sleeve is vulcanized on the inner wall of the motor stator casing; the motor rotor is screwed in a curved cambered surface of the motor stator rubber sleeve; and the bypass valve is provided with a bypass body. The bypass valve of the downhole motor has the advantages of simple and compact structure, reliability, complete functions and long service life, and is flexible to use, etc. The bypass valve is a substitute of the sliding sleeve bypass valve and has the characteristics of safety and reliability and compact and simple structure compared with the sliding sleeve bypass valve. The bypass valve is applicable to various downhole motors required by the current drilling. The bypass valve of the downhole motor is suitable to be matched with the downhole motor with the outside diameters of 100, 165, 172, 197 and 244. The downhole motor with the outside diameters basically covers the application range required by drilling.
Description
Technical field
The utility model relates to the down-hole motor that a kind of oil gas field drilling process uses, and is specifically related to a kind of down-hole motor bypass valve.
Background technology
In the oil gas field drilling process, need to use a kind of power drive drill bit to rotate broken formation, realize drilling well; Down-hole motor be exactly this be power with the drilling fluid, can transfer fluid pressure to the positive displacement mud motor of mechanical energy.The slurry flows that pumps when slush pump enters motor through bypass valve, forms certain pressure differential at the import and export of motor, promotes the axis rotation of rotor around stator, and rotating speed and moment of torsion are passed to drill bit by universal drive shaft and power transmission shaft, thereby realizes drillng operation.
Motor need connect a bypass and keep bypass to open during with the drilling tool G.I.H on motor top, make the inside and outside fluid pressure of drilling tool keep just making the smooth G.I.H of motor after the balance; Motor need cut out motor top bypass when work, just can make the motor import and export form certain pressure differential, could produce power, and this process is just realized by bypass valve.
At present, what the motor bypass valve of domestic use adopted is the sleeve type bypass valve, as shown in Figure 1, the sleeve type bypass valve is to slide over move toward one another under the fluid pressure effect by two, the sliding sleeve 10 that has by-pass prot is slipped over have another sliding sleeve 15 of O-ring seals 14 and closes bypass; Two slide over the motion that repels each other under the effect of spring restoring force, the sliding sleeve 10 that has by-pass prot are slipped over have another sliding sleeve 15 of O-ring seals 14 and open bypass; Owing to the sleeve type bypass valve slides up and down by O shape circle 14, realize the opening and closing of bypass, cause 14 dozens on O shape circle to turn round easily and make O shape enclose the fracture bypass valve defective; In addition, carry the small grains of sand in the drilling fluid of circulation, slag inclusion when sliding sleeve moves mutually, is pulled the sealing ring between two sliding sleeves easily and is caused sealing ring fracture bypass valve defective in the middle of two sliding sleeves.
Summary of the invention
Goal of the invention: at the deficiencies in the prior art, the purpose of this utility model provides a kind of down-hole motor bypass valve, so that it has advantages such as stable performance, long service life.
Technical scheme: in order to realize the foregoing invention purpose, the technical solution adopted in the utility model is as follows:
A kind of down-hole motor bypass valve comprises shell body; Shell body is provided with the bypass valve body that runs through shell body.Described bypass valve body comprises orifice plate, presses mother, spring, seal, the 2nd O shape circle, sealing mat and flechette-type piston; Described mother, seal and the sealing mat of pressing is successively set in the preformed hole corresponding on the shell body from outside to inside, and the described mother of pressure is connected by the screw thread that uses that cooperatively interacts with shell body; In pressing mother, be provided with orifice plate; In seal, be provided with spring, be fixed with the flechette-type piston at the front end of spring; The use that cooperatively interacts of described flechette-type piston and sealing mat; Described the 2nd O shape snare is on seal.
It is injection molded that described sealing mat adopts tetrafluoro to add copper powder, and its lower end is to have 30～60 ° the O-ring conical surface.
Described flechette-type piston up and down two ends has not connected blind hole, and the flechette-type piston has 3～6 by-pass prots on the face of cylinder up and down, and to have a not connected blind hole identical with two ends up and down respectively, and flechette-type piston top is big through having 30～60 ° the O-ring conical surface.
Above-mentioned shell body is connected by the screw thread that uses that cooperatively interacts with the motor stator shell, and the motor stator gum cover vulcanizes on the inwall of motor stator shell, and motor rotor screws in the curved surface of motor stator gum cover.
Described bypass valve body is provided with 4 to 6.
The down-hole motor bypass valve plays a part load-bearing in whole down-hole motor wants, and whether its reliability, flexibility and project organization directly affect whole down-hole motor can open work, is related to the application life of whole down-hole motor.Bypass valve is a motor when going into the well with drilling tool, and bypass is opened and kept the inside and outside fluid pressure balance of drilling tool, and motor is lowered into the precalculated position smoothly with drilling tool; Motor is when work, and bypass is closed and kept motor pressure differential up and down, makes motor can produce enough power; Whole operating principle is: 4 to 6 bypass valve bodies are installed on the bypass valve of motor top, and when not having extraneous pressure in the drilling tool, the bypass valve body inner spring struts piston, keeps bypass to open, and makes motor subscribe the position with the drilling tool G.I.H; When in the drilling tool extraneous pressure being arranged, the bypass valve body inner carrier overcomes spring force and seals bypass under the fluid pressure effect, makes motor can produce enough pressure differentials up and down, and enough power is provided; Realized the function of bypass valve; What bypass valve of the present utility model adopted is bypass flechette-type piston valve, and genus face and face contact type sealing when the drilling tool inside and outside differential pressure is big more, seal reliable more; Contact seal, make flechette-type piston in the bypass valve body motion flexibly, reliable, significantly reduced fretting wear, prolonged application life.
Beneficial effect: down-hole motor bypass valve of the present utility model, simple in structure, compact, advantages such as use is flexible, reliable, multiple functional, long service life, it is the substitute of sleeve type bypass valve, have, compact conformation characteristic of simple more safe and reliable, be suitable for the required various novel down-hole motors of current drilling well than sleeve type bypass valve.
Description of drawings
Fig. 1 is the structural representation of existing down-hole motor bypass valve.
Fig. 2 is the partial schematic diagram of down-hole motor.
Fig. 3 is the structural representation of down-hole motor bypass valve of the present utility model.
Fig. 4 is the bypass valve body structural representation of down-hole motor bypass valve of the present utility model.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is further explained.
As shown in Figure 2, be down-hole motor of the present utility model.This down-hole motor comprises bypass valve 1, motor stator shell 2, motor stator gum cover 3 and motor rotor 4.Bypass valve 1 and motor stator shell 2 being threaded togather by the use that cooperatively interacts, 3 sulfurations of motor stator gum cover are on the inwall of motor stator shell 2, motor rotor 4 screws in the curved surface of motor stator gum cover 3, thereby realize bypass valve 1, motor stator shell 2, motor stator gum cover 3, and the connection between the motor rotor 4.
As shown in Figure 3, be down-hole motor bypass valve of the present utility model.This down-hole motor bypass valve comprises shell body 5, bypass valve body 6 and O shape circle 7.Bypass valve body 6 is provided with 4 to 6 altogether, all runs through being arranged on the shell body 5.The one O shape circle 7 is sleeved on the outer ring, bottom of shell body 5.
As shown in Figure 4, be the bypass valve body 6 of down-hole motor bypass valve.This bypass valve body 6 comprises orifice plate 16, pressure mother 7, spring 8, seal 9, the 2nd O shape circle 13, sealing mat 11 and flechette-type piston 12.Flechette-type piston 12, sealing mat 11, spring 8 are put into the corresponding hole of reserving on the shell body 5 successively, the 2nd O shape circle 13 is inserted on the seal 9, the 2nd O shape circle 13 that will be inserted in is again realized the sealing of 5 of seal 9 and shell bodies in seal 9 is bumped into the hole of shell body 5 reservations; Orifice plate 16 is bumped into presses in female 7, will press more female 7 and orifice plate 16 screw in together in the corresponding screwed hole of shell body 5, seal 9 lower flat are pressed on the sealing mat 11 top corresponding flats sealing that realization seal 9 and sealing mat are 11; Above-mentioned connection realizes sealing mat 11, the 2nd O shape circle 13, seal 9 are fixed on the shell body 5, realizes flechette-type piston 12, spring 8 are positioned in the space between shell body 5 and the seal 9, just forms whole bypass valve 1.
To adopt tetrafluoros to add copper powder injection molded for sealing mat 11 on the down-hole motor bypass valve of the present utility model, and its lower end is to have 30～60 ° the O-ring conical surface; The flechette-type piston has not connected blind hole in two ends about in the of 12, and piston up and down has 3～6 by-pass prots on the face of cylinder, and to have a not connected blind hole identical with two ends up and down respectively, and piston top is big through having 30～60 ° the O-ring conical surface; When not having external pressure in the drilling tool, under the elastic force effect of spring 8, sealing mat 11 and flechette-type piston 12 are separated in the bypass valve body 6, realize just connecting inside and outside the drilling tool inside and outside the bypass valve 1; When the external pressure effect is arranged in the drilling tool, flechette-type piston 12 compresses spring 8 rapidly in the bypass valve body 6 under the effect of external pressure, and the O-ring conical surface sealing mat 11 corresponding lower ends that are attached to tightly that make flechette-type piston 12 tops have 30～60 ° are on having 30～60 ° the O-ring conical surface, sealing mat 11 upper plane tightly are attached on seal 9 lower flat, realize inside and outside the bypass valve 1 just outer closure in the drilling tool; When external pressure is big more, flechette-type piston 12 is pressed tightly more with sealing mat 11, sealing mat 11 with seal 9, and sealing effectiveness is good more.
Down-hole motor bypass valve of the present utility model is suitable for the supporting bypass valve of down-hole motor of 100,165,172,197,244 outside dimensions; The down-hole motor of above-mentioned outside dimension has been included the required scope of application of drilling well substantially.Use down-hole motor and can realize the drilling well of diameter, inclined shaft, extended reach well, horizontal well, Multilateral Wells, fishbone well, improve in the volume increase of oily company and store up; Reduce land occupation, help protecting environment, shorten and see the well cycle, stop or the generation of minimizing accident; Help few input, fecund goes out, and has reduced development cost greatly.
Claims (5)
1. a down-hole motor bypass valve comprises shell body (5); It is characterized in that: described shell body (5) is provided with the bypass valve body (6) that runs through shell body (5); Described bypass valve body (6) comprises orifice plate (16), presses female (7), spring (8), seal (9), the 2nd O shape to enclose (13), sealing mat (11) and flechette-type piston (12); Described female (7), seal (9) and the sealing mat (11) of pressing is successively set in the upward corresponding preformed hole of shell body (5) from outside to inside, and described pressure female (7) is connected by the screw thread that uses that cooperatively interacts with shell body (5); In pressing female (7), be provided with orifice plate (16); In seal (9), be provided with spring (8), be fixed with flechette-type piston (12) at the front end of spring (8); The use that cooperatively interacts of described flechette-type piston (12) and sealing mat (11); Described the 2nd O shape circle (13) is enclosed within on the seal (9).
2. down-hole motor bypass valve according to claim 1 is characterized in that: it is injection molded that described sealing mat (11) adopts tetrafluoro to add copper powder, and its lower end is to have 30～60 ° the O-ring conical surface.
3. down-hole motor bypass valve according to claim 1, it is characterized in that: described flechette-type piston (12) two ends up and down has not connected blind hole, flechette-type piston (12) has 3～6 by-pass prots on the face of cylinder up and down, to have a not connected blind hole identical with two ends up and down respectively, and flechette-type piston top is big through having 30～60 ° the O-ring conical surface.
4. down-hole motor bypass valve according to claim 1 is characterized in that: described bypass valve body (6) is provided with 4 to 6.
5. down-hole motor bypass valve according to claim 1, it is characterized in that: described shell body (5) is connected by the screw thread that uses that cooperatively interacts with motor stator shell (2), motor stator gum cover (3) sulfuration is on the inwall of motor stator shell (2), and motor rotor (4) screws in the curved surface of motor stator gum cover (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205628245U CN201915871U (en) | 2010-10-15 | 2010-10-15 | Bypass valve of downhole motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205628245U CN201915871U (en) | 2010-10-15 | 2010-10-15 | Bypass valve of downhole motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201915871U true CN201915871U (en) | 2011-08-03 |
Family
ID=44415673
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205628245U Expired - Fee Related CN201915871U (en) | 2010-10-15 | 2010-10-15 | Bypass valve of downhole motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201915871U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101963049A (en) * | 2010-10-15 | 2011-02-02 | 扬州天业石油机械有限公司 | Underground motor bypass valve |
-
2010
- 2010-10-15 CN CN2010205628245U patent/CN201915871U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101963049A (en) * | 2010-10-15 | 2011-02-02 | 扬州天业石油机械有限公司 | Underground motor bypass valve |
| CN101963049B (en) * | 2010-10-15 | 2012-12-26 | 扬州天业石油机械有限公司 | Underground motor bypass valve |
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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: 20110803 Termination date: 20161015 |