CN202215160U - Drill column friction and resistance preventing joint for reducing axial friction of drill column - Google Patents
Drill column friction and resistance preventing joint for reducing axial friction of drill column Download PDFInfo
- Publication number
- CN202215160U CN202215160U CN2011203589217U CN201120358921U CN202215160U CN 202215160 U CN202215160 U CN 202215160U CN 2011203589217 U CN2011203589217 U CN 2011203589217U CN 201120358921 U CN201120358921 U CN 201120358921U CN 202215160 U CN202215160 U CN 202215160U
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- cylindrical shell
- drill string
- boss
- web
- tiltedly
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Abstract
The utility model relates to the technical field of drill column friction and resistance preventing devices, in particular to a drill column friction and resistance preventing joint for reducing axial friction of a drill column. The drill column friction and resistance preventing joint comprises a cylinder body, an inner sleeve body and an outer sleeve body, wherein the cylinder body is internally provided with a through hole, a boss is arranged in the middle of the outer side of the cylinder body, the inner sleeve body and the outer sleeve body are positioned on the outer side of the boss, the outer side of the inner sleeve body and the inner side of the outer sleeve body are fixedly arranged together through threads, and the inner sleeve body and the outer sleeve body correspond to the shape of the boss. The drill column friction and resistance preventing joint is simple and reasonable in structure and convenient to use, and is connected on a well drilling tubular column in series for drilling through reducing the axial friction force of the drill column; as the outer diameter of the friction and resistance preventing joint is greater than the outer diameters of a drill column cylinder body and a connecting hoop, the direct contact between the drill column and the inner wall or the outer wall of a sleeve is avoided, and the purpose of avoiding abrasion of the drill column and the sleeve is achieved; and the axial friction force of the drill column can be reduced by a friction preventing belt rotating around a web; therefore, the drill column friction and resistance preventing joint has the advantages that the structure is simple, and the reliability and the integral intensity are high.
Description
Technical field
the utility model relates to the anti-frictional resistance device technique field of drill string, is the anti-frictional resistance joint of a kind of reduction drill string axial friction drill string.
Background technology
in drilling process, drill string rotating can produce frictional resistance between drill string and sleeve pipe and the drill string and the borehole wall, can limit the transmission of the pressure of the drill for horizontal well or extended reach well, influences the extended distance of well.In addition, bigger frictional resistance can cause the high vibration and the wearing and tearing of drilling tool, increases the probability of damage of drill string and sleeve pipe.And often there is the problem of the following aspects in conventional drill string frictional resistance instrument: 1, instrument is complicated.2, reliability and bulk strength are lower.
Summary of the invention
the utility model provides a kind of drill string to prevent the frictional resistance device, has overcome the deficiency of above-mentioned prior art, and it can effectively solve existing drill string frictional resistance tool construction complicacy, reliability and the lower problem of bulk strength.
The technical scheme of
the utility model realizes through following measure: a kind of reduction drill string axial friction drill string is prevented the frictional resistance joint, comprises cylindrical shell, interior body and outer sleeve body; Through hole is arranged in cylindrical shell; Middle side part has boss outside cylindrical shell, and interior body and outer sleeve body are positioned at the boss outside, and the outside of interior body and the inboard of outer sleeve body are fixedly installed togather through screw thread; Interior body is corresponding with the shape of boss with outer sleeve body; Form annular seal space between interior body and outer sleeve body and the boss, the screwed hole that communicates with annular seal space is arranged respectively on interior body and outer sleeve body, at least two shaft orientation opening groove is arranged on the body outside; On shaft orientation opening groove, be installed with web, on web, being installed with can be around the wear-resistant belt of web axial rotation.
Be to the further optimization of above-mentioned utility model technical scheme below or/and improve:
Body can comprise the oblique cylindrical shell in a right cylindrical shell and a left side in
were above-mentioned, and the left end of right cylindrical shell and a left side tiltedly outer end of cylindrical shell are fixed together, and outer sleeve body comprises the oblique cylindrical shell in the left-hand cylinder body and the right side, and the right-hand member of left-hand cylinder body is fixed together with the right tiltedly outer end of cylindrical shell; The outside of right cylindrical shell and the inboard of left-hand cylinder body are fixedly installed togather through screw thread; Left-hand cylinder body and right cylindrical shell are positioned at the outside of boss; A left side tiltedly cylindrical shell is set on the cylindrical shell on boss left side and right side with right tiltedly cylindrical shell; Tiltedly on the cylindrical shell screwed hole that communicates with annular seal space is arranged respectively at the oblique cylindrical shell in a left side with right, a left side tiltedly forms annular seal space between cylindrical shell, right cylindrical shell, right tiltedly cylindrical shell and the boss, and at least two shaft orientation opening groove is arranged on the left-hand cylinder body; On shaft orientation opening groove, be installed with web, on web, being installed with can be around the wear-resistant belt of web axial rotation.
the above-mentioned cylindrical shell left end inside and the cylindrical shell right-hand member outside can have taper thread respectively.
On
above-mentioned boss the groove that communicates with annular seal space can be arranged.
Between
oblique cylindrical shell in an above-mentioned left side and the cylindrical shell sealing ring can be installed, between right tiltedly cylindrical shell and the cylindrical shell sealing ring be installed, between oblique cylindrical shell upper end, a left side and the left-hand cylinder body sealing ring can be installed.
The right ends face of
above-mentioned web all can be circular arc.
above-mentioned wear-resistant belt can be the rubber wear-resistant belt.
the utility model reasonable and compact in structure; Easy to use; Be serially connected on the drilling well tubing string and creep into through reducing the anti-frictional resistance joint of drill string axial friction drill string; Because the external diameter of anti-frictional resistance joint greater than the external diameter of drill string cylindrical shell and box cupling, has been avoided direct contact the between drill string and the internal surface of sleeve pipe or the borehole wall, thereby has reached the purpose that prevents drill string and casing wear; Can reduce the axial friction of drill string through wear-resistant belt, therefore have simple in structure, reliability and the high characteristics of bulk strength around web rotation.
Description of drawings
accompanying drawing 1 is looked the sectional structure sketch map for the master of the utility model most preferred embodiment.
Coding in
accompanying drawing is respectively: 1 is cylindrical shell, and 2 is tiltedly cylindrical shell of a left side, and 3 is right cylindrical shell, and 4 is the left-hand cylinder body, and 5 is right tiltedly cylindrical shell; 6 is annular seal space, and 7 is sealing ring, and 8 is boss, and 9 is groove; 10 is screwed hole, and 11 is shaft orientation opening groove, and 12 is web, and 13 is wear-resistant belt.
The specific embodiment
the utility model does not receive the restriction of following embodiment, can confirm concrete embodiment according to the technical scheme and the actual conditions of the utility model.
are in the utility model; For the ease of describing; The description of the relative position relation of each parts all is to describe according to the Butut mode of Figure of description 1, as: on. down. a left side. the position relation on the right side etc. is what to confirm according to the Butut direction of Figure of description 1.
Below in conjunction with embodiment and accompanying drawing the utility model is further described:
shown in accompanying drawing 1, the anti-frictional resistance joint of this reduction drill string axial friction drill string comprises cylindrical shell 1, interior body and outer sleeve body; Through hole is arranged in cylindrical shell; Middle side part has boss 8 outside cylindrical shell, and interior body and outer sleeve body are positioned at boss 8 outsides, and the outside of interior body and the inboard of outer sleeve body are fixedly installed togather through screw thread; Interior body is corresponding with the shape of boss 8 with outer sleeve body; Form annular seal space 6 between interior body and outer sleeve body and the boss 8, the screwed hole 10 that communicates with annular seal space 6 is arranged respectively on interior body and outer sleeve body, at least two shaft orientation opening groove 11 is arranged on the body outside; On shaft orientation opening groove 11, be installed with web 12, on web 12, being installed with can be around the wear-resistant belt 13 of web 12 axial rotation.
Can according to actual needs the anti-frictional resistance joint of above-mentioned reduction drill string axial friction drill string be done further to optimize or/and improve:
are shown in accompanying drawing 1; Interior body comprises the oblique cylindrical shell 2 in a right cylindrical shell 3 and a left side; The left end of right cylindrical shell 3 tiltedly is fixed together the outer end of cylindrical shell 2 with a left side, and outer sleeve body comprises left-hand cylinder body 4 and right tiltedly cylindrical shell 5, and the right-hand member of left-hand cylinder body 4 is fixed together with the right tiltedly outer end of cylindrical shell 5; The outside of right cylindrical shell 3 and the inboard of left-hand cylinder body 4 are fixedly installed togather through screw thread; Left-hand cylinder body 4 and right cylindrical shell 3 are positioned at the outside of boss 8; A left side tiltedly cylindrical shell 2 is set on the cylindrical shell 1 on boss 8 left sides and right side with right tiltedly cylindrical shell 5; Oblique cylindrical shell 2 tiltedly has the screwed hole 10 that communicates with annular seal space 6 respectively on the cylindrical shell 5 with right on a left side; A left side tiltedly forms annular seal space 6 between cylindrical shell 2, right cylindrical shell 3, right tiltedly cylindrical shell 5 and the boss 8; At least two shaft orientation opening groove 11 is arranged on left-hand cylinder body 4, on shaft orientation opening groove 11, be installed with web 12, on web 12, being installed with can be around the wear-resistant belt 13 of web 12 axial rotation.Inject hydraulic oil in annular seal space 6 through screwed hole 10 during use, inject hydraulic oil and close screwed hole 10 through plug afterwards.
shown in accompanying drawing 1, for the ease of installation and removal, the cylindrical shell 1 left end inside and the cylindrical shell 1 right-hand member outside have taper thread respectively.
have the groove 9 that communicates with annular seal space 6 on the boss 8 shown in accompanying drawing 1.
Shown in accompanying drawing 1, in order to increase sealing performance, a left side tiltedly is equipped with sealing ring 7 between cylindrical shell 2 and the cylindrical shell 1, between right oblique cylindrical shell 5 and the cylindrical shell 1 sealing ring 7 is installed
, between the outer end of the oblique cylindrical shell 2 in a left side and left-hand cylinder body 4, sealing ring 7 is installed.
shown in accompanying drawing 1, the right ends face of web 12 all is circular arc.Being convenient to wear-resistant belt 13 like this rotates around web 12.
as required, wear-resistant belt 13 is the rubber wear-resistant belt.Abrasion resistance is better like this.
above technical characterictic has constituted the most preferred embodiment of the utility model, and it has stronger compliance and best implementation result, can increase and decrease non-essential technical characterictic according to actual needs, satisfies the demand of different situations.
The use of
the utility model most preferred embodiment: the utility model is serially connected in the enterprising row of drilling well tubing string creeps into; Because the external diameter of left-hand cylinder body 4 is greater than the external diameter of drill string cylindrical shell and box cupling; Avoid direct contact the between drill string and the internal surface of sleeve pipe or the borehole wall, thereby reached the purpose that prevents drill string and casing wear.In annular seal space, inject hydraulic oil in 6, this hydraulic oil has played the effect of FDB, and drill string can produce relative motion between integral body that interior cover and overcoat connect into and the cylindrical shell 1 in rotary course, reduced frictional resistance between drill string and internal surface of sleeve pipe or the borehole wall.When drill string moved forward along borehole axis, the wear-resistant belt 13 that rotates around web 12 can change into the form that crawler belt rotates with the section axial slip, thereby can reduce the axial friction of drill string.
Claims (10)
1. one kind is reduced the anti-frictional resistance joint of drill string axial friction drill string, it is characterized in that comprising cylindrical shell, interior body and outer sleeve body; Through hole is arranged in cylindrical shell; Middle side part has boss outside cylindrical shell, and interior body and outer sleeve body are positioned at the boss outside, and the outside of interior body and the inboard of outer sleeve body are fixedly installed togather through screw thread; Interior body is corresponding with the shape of boss with outer sleeve body; Form annular seal space between interior body and outer sleeve body and the boss, the screwed hole that communicates with annular seal space is arranged respectively on interior body and outer sleeve body, at least two shaft orientation opening groove is arranged on the body outside; On shaft orientation opening groove, be installed with web, on web, being installed with can be around the wear-resistant belt of web axial rotation.
2. reduction drill string axial friction drill string according to claim 1 is prevented the frictional resistance joint; Body comprises the oblique cylindrical shell in a right cylindrical shell and a left side in it is characterized in that; The left end of right cylindrical shell tiltedly is fixed together the outer end of cylindrical shell with a left side; Outer sleeve body comprises left-hand cylinder body and right tiltedly cylindrical shell, and the right-hand member of left-hand cylinder body is fixed together with the right tiltedly outer end of cylindrical shell; The outside of right cylindrical shell and the inboard of left-hand cylinder body are fixedly installed togather through screw thread; Left-hand cylinder body and right cylindrical shell are positioned at the outside of boss; A left side tiltedly cylindrical shell is set on the cylindrical shell on boss left side and right side with right tiltedly cylindrical shell; Tiltedly on the cylindrical shell screwed hole that communicates with annular seal space is arranged respectively at the oblique cylindrical shell in a left side with right, a left side tiltedly forms annular seal space between cylindrical shell, right cylindrical shell, right tiltedly cylindrical shell and the boss, and at least two shaft orientation opening groove is arranged on the left-hand cylinder body; On shaft orientation opening groove, be installed with web, on web, being installed with can be around the wear-resistant belt of web axial rotation.
3. reduction drill string axial friction drill string according to claim 1 and 2 is prevented the frictional resistance joint, it is characterized in that the cylindrical shell left end inside and the cylindrical shell right-hand member outside have taper thread respectively.
4. reduction drill string axial friction drill string according to claim 3 is prevented the frictional resistance joint, it is characterized in that the groove that communicates with annular seal space is arranged on the boss.
5. reduction drill string axial friction drill string according to claim 2 is prevented the frictional resistance joint; It is characterized in that between oblique cylindrical shell in a left side and the cylindrical shell sealing ring being installed; Between right tiltedly cylindrical shell and the cylindrical shell sealing ring is installed, between oblique cylindrical shell upper end, a left side and the left-hand cylinder body sealing ring is installed.
6. reduction drill string axial friction drill string according to claim 4 is prevented the frictional resistance joint; It is characterized in that between oblique cylindrical shell in a left side and the cylindrical shell sealing ring being installed; Between right tiltedly cylindrical shell and the cylindrical shell sealing ring is installed, between oblique cylindrical shell upper end, a left side and the left-hand cylinder body sealing ring is installed.
7. reduction drill string axial friction drill string according to claim 1 and 2 is prevented the frictional resistance joint, it is characterized in that the right ends face of web all is circular arc.
8. reduction drill string axial friction drill string according to claim 3 is prevented the frictional resistance joint, it is characterized in that the right ends face of web all is circular arc.
9. reduction drill string axial friction drill string according to claim 6 is prevented the frictional resistance joint, it is characterized in that the right ends face of web all is circular arc.
10. reduction drill string axial friction drill string according to claim 8 is prevented the frictional resistance joint, it is characterized in that wear-resistant belt is the rubber wear-resistant belt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203589217U CN202215160U (en) | 2011-09-23 | 2011-09-23 | Drill column friction and resistance preventing joint for reducing axial friction of drill column |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203589217U CN202215160U (en) | 2011-09-23 | 2011-09-23 | Drill column friction and resistance preventing joint for reducing axial friction of drill column |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202215160U true CN202215160U (en) | 2012-05-09 |
Family
ID=46014420
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203589217U Expired - Lifetime CN202215160U (en) | 2011-09-23 | 2011-09-23 | Drill column friction and resistance preventing joint for reducing axial friction of drill column |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202215160U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112761546A (en) * | 2021-02-04 | 2021-05-07 | 西南石油大学 | Drag-reducing and wear-resisting drill string protector |
-
2011
- 2011-09-23 CN CN2011203589217U patent/CN202215160U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112761546A (en) * | 2021-02-04 | 2021-05-07 | 西南石油大学 | Drag-reducing and wear-resisting drill string protector |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120509 |