CN108442889A - Rotary wear-resistant drag reducer - Google Patents
Rotary wear-resistant drag reducer Download PDFInfo
- Publication number
- CN108442889A CN108442889A CN201810110356.9A CN201810110356A CN108442889A CN 108442889 A CN108442889 A CN 108442889A CN 201810110356 A CN201810110356 A CN 201810110356A CN 108442889 A CN108442889 A CN 108442889A
- Authority
- CN
- China
- Prior art keywords
- groove
- cavity
- wear
- main body
- resistant
- 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.)
- Pending
Links
- 239000003638 chemical reducing agent Substances 0.000 title abstract description 6
- 230000001050 lubricating effect Effects 0.000 claims abstract description 5
- 239000006096 absorbing agent Substances 0.000 claims description 10
- 239000000314 lubricant Substances 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 5
- 238000005507 spraying Methods 0.000 claims description 4
- 239000004519 grease Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 5
- 238000007789 sealing Methods 0.000 abstract description 3
- 238000003801 milling Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 208000002925 dental caries Diseases 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/10—Wear protectors; Centralising devices, e.g. stabilisers
- E21B17/1085—Wear protectors; Blast joints; Hard facing
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/10—Wear protectors; Centralising devices, e.g. stabilisers
- E21B17/1042—Elastomer protector or centering means
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
The invention relates to the technical field of workover of horizontal wells of oil fields, in particular to a rotary wear-resistant drag reducer. The rotating wear-resistant drag reducer includes: the device comprises an upper joint, a centering sleeve, a wear-resistant layer, a lubricating layer, a body and a lower joint; one end of the main body is in threaded connection with the upper joint, and the other end of the main body is in threaded connection with the lower joint; the main body is provided with a first groove and a second groove, a third groove and a fourth groove are sleeved on the centering sleeve, the third groove and the first groove form a first cavity, the fourth groove and the second groove form a second cavity, and wear-resistant layers are respectively sprayed in the first cavity and the second cavity; a lubricating layer is filled between the two cavities; the righting sleeve is connected with the body and can freely rotate with the body; the outer diameter of the centralizing sleeve is larger than the outer diameters of the pipe column and the tool main body. The rotary wear-resistant drag reducer provided by the invention can flexibly rotate, has a good sealing effect and a good drag reduction effect, and effectively solves the problem of large friction resistance when a tubular column is lowered and rotated.
Description
Technical field
The present invention relates to oilfield horizontal well well workover technology field, more particularly to a kind of rotating wear-resistant resistance absorber.
Background technology
Currently, since Horizontal Well body structure is special, straight well section is in 90 ° of angles with horizontal segment, therefore, rise a lower tubular column,
During rotating milling shaping, frictional resistance is big, and the transmission loss of torque, pulling force and bit pressure is big.
Common horizontal well friction reducer is ball-type resistance absorber, blow-by between ball and groove, liquid and miscellaneous in well
Matter easily wraps up ball, prevents ball from flexible rotating, does not have the effect of drag reduction not only, increases remove and rotate tubing string instead
When resistance.
Invention content
（One）Technical problems to be solved
Technical problem to be solved by the invention is to provide a kind of rotating wear-resistant resistance absorbers, to overcome well puller in the prior art
Tool does not have drag reduction effect, increases the defect of resistance when removing and rotating tubing string instead.
（Two）Technical solution
To solve the above-mentioned problems, a kind of rotating wear-resistant resistance absorber of present invention offer includes：Top connection, supporting positive cover, wearing layer, profit
Slip layer, ontology and lower contact；
One end of the main body is threadedly coupled with top connection, and the other end of the main body is threadedly coupled with lower contact；
The main body is equipped with the first groove and the second groove, and the supporting positive cover is equipped with corresponding with the first groove and the second groove
Third groove and the 4th groove,
The third groove and the first groove form the first cavity, and the 4th groove and the second groove form the second cavity, institute
State difference spraying abrasion-proof layer in the first cavity and the second cavity；
Lubricant layer is filled between first cavity and the second cavity；
The supporting positive cover and ontology are connected and can be rotated freely between the supporting positive cover and ontology；
The supporting positive cover outer diameter is more than tubing string and tool body outer diameter, realizes centralizing function.
Preferably, the lubricant layer uses lubricating grease material.
（Three）Advantageous effect
Rotating wear-resistant resistance absorber provided by the invention forms cavity using two grooves between the supporting positive cover and ontology, and sprays
Wearing layer is applied, flexible rotating and good sealing function can be played the role of, play good drag reduction, efficiently solved
When lower and rotation tubing string, the big problem of frictional resistance.
Description of the drawings
Fig. 1 is rotating wear-resistant resistance absorber schematic diagram of the embodiment of the present invention.
Wherein：1, lower contact；2：Wearing layer；3：Ontology；4：Supporting positive cover；5：Lubricant layer；6：Top connection.
Specific implementation mode
With reference to the accompanying drawings and examples, the specific implementation mode of the present invention is described in further detail.Implement below
Example is not intended to limit the scope of the present invention for illustrating the present invention.
As shown in Figure 1, the present invention provides a kind of rotating wear-resistant resistance absorber, including：Top connection 1, supporting positive cover 4, wearing layer 2,
Lubricant layer 5, ontology 3 and lower contact 1.
One end of the main body 3 is threadedly coupled with top connection 6, and the other end of the main body 3 is threadedly coupled with lower contact 1；
The main body 3 is equipped with the first groove and the second groove, and the supporting positive cover 4 is equipped with opposite with the first groove and the second groove
The third groove and the 4th groove answered,
The third groove and the first groove form the first cavity, and the 4th groove and the second groove form the second cavity, institute
State difference spraying abrasion-proof layer in the first cavity and the second cavity；
Lubricant layer 5 is filled between first cavity and the second cavity；
The supporting positive cover 4 and ontology 3 are connected and can be rotated freely between the supporting positive cover 4 and ontology 3；
4 outer diameter of the supporting positive cover is more than tubing string and tool body outer diameter, realizes centralizing function.
Wherein, lubricant layer is made of lubricating grease material.Wearing layer uses High Strength Wear-Resistance Material.Wherein, outside supporting positive cover
Diameter is more than tubing string and tool body outer diameter, has the function of righting.
Specifically supporting positive cover is welded on the body using welding procedure.Between supporting positive cover is connected to tubing string, encounter curved
When spending, supporting positive cover is contacted with casing wall, and tubular column main body not will produce fine rotation when transferring tubing string with casing-contact in underground,
The turntable rotation of similar ground, tubing string can play the role of drag reduction along camber free releasing；When rotating milling, due to
It can be rotated freely between supporting positive cover and ontology, supporting positive cover and casing-contact do not rotate, and tool and tubing string can rotate freely, and disappear
In addition to the rotation milling resistance between tubing string and casing, play the role of rotating drag reduction.
Rotating wear-resistant friction reducer in the embodiment of the present invention has the following advantages：
（1）When playing lower tubular column, the automatic easement of tubing string is helped, drag reduction is played the role of；
（2）When rotating milling, the frictional resistance between casing and tubing string is eliminated, plays the role of rotating drag reduction；
（3）Supporting positive cover outer diameter is more than tubing string and tool body outer diameter, has the function of righting；
（4）In cavity spraying wear-resistant materials and between two cavitys be equipped with lubricant layer, have sealing function, prevent drag reduction
Failure.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, several improvement and deformations can also be made, these improvement and deformations
Also it should be regarded as protection scope of the present invention.
Claims (2)
1. a kind of rotating wear-resistant resistance absorber, which is characterized in that including：
Top connection, supporting positive cover, wearing layer, lubricant layer, ontology and lower contact；
One end of the main body is threadedly coupled with top connection, and the other end of the main body is threadedly coupled with lower contact；
The main body is equipped with the first groove and the second groove, and the supporting positive cover is equipped with corresponding with the first groove and the second groove
Third groove and the 4th groove,
The third groove and the first groove form the first cavity, and the 4th groove and the second groove form the second cavity, institute
State difference spraying abrasion-proof layer in the first cavity and the second cavity；
Lubricant layer is filled between first cavity and the second cavity；
The supporting positive cover and ontology are connected and can be rotated freely between the supporting positive cover and ontology；
The supporting positive cover outer diameter is more than tubing string and tool body outer diameter, realizes centralizing function.
2. the rotating wear-resistant resistance absorber as described in claim 1, which is characterized in that the lubricant layer uses lubricating grease material.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711373071 | 2017-12-19 | ||
| CN2017113730716 | 2017-12-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108442889A true CN108442889A (en) | 2018-08-24 |
Family
ID=63191620
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810110356.9A Pending CN108442889A (en) | 2017-12-19 | 2018-02-05 | Rotary wear-resistant drag reducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108442889A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0178709A1 (en) * | 1984-10-11 | 1986-04-23 | DIAMANT BOART Société Anonyme | Stabilizer |
| CN201083088Y (en) * | 2007-08-14 | 2008-07-09 | 江苏工业学院 | Bushing abrasion-reducing equipment |
| CN201851036U (en) * | 2010-11-21 | 2011-06-01 | 中国石油集团西部钻探工程有限公司 | Antifriction and resistance-diminishing centralizing short piece |
| CN202380989U (en) * | 2011-12-28 | 2012-08-15 | 中国石油天然气股份有限公司 | Tubular column centralizing drag reducer |
| CN103334705A (en) * | 2013-08-01 | 2013-10-02 | 南通奥里斯特机械有限公司 | Novel sucker rod centering device |
| CN104179464A (en) * | 2014-08-08 | 2014-12-03 | 陆威延 | Downhole tool used for righting and centralizing geological resource exploration drilling tool and capable of preventing drilling tool and sleeve from abrasion |
| CN206617105U (en) * | 2017-03-15 | 2017-11-07 | 中国石油天然气股份有限公司 | Wear-resistant torque-reducing nipple with rubber-metal sliding friction pair |
-
2018
- 2018-02-05 CN CN201810110356.9A patent/CN108442889A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0178709A1 (en) * | 1984-10-11 | 1986-04-23 | DIAMANT BOART Société Anonyme | Stabilizer |
| CN201083088Y (en) * | 2007-08-14 | 2008-07-09 | 江苏工业学院 | Bushing abrasion-reducing equipment |
| CN201851036U (en) * | 2010-11-21 | 2011-06-01 | 中国石油集团西部钻探工程有限公司 | Antifriction and resistance-diminishing centralizing short piece |
| CN202380989U (en) * | 2011-12-28 | 2012-08-15 | 中国石油天然气股份有限公司 | Tubular column centralizing drag reducer |
| CN103334705A (en) * | 2013-08-01 | 2013-10-02 | 南通奥里斯特机械有限公司 | Novel sucker rod centering device |
| CN104179464A (en) * | 2014-08-08 | 2014-12-03 | 陆威延 | Downhole tool used for righting and centralizing geological resource exploration drilling tool and capable of preventing drilling tool and sleeve from abrasion |
| CN206617105U (en) * | 2017-03-15 | 2017-11-07 | 中国石油天然气股份有限公司 | Wear-resistant torque-reducing nipple with rubber-metal sliding friction pair |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180824 |
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| RJ01 | Rejection of invention patent application after publication |