CN2457322Y - Non-rotary drill rod protector - Google Patents
Non-rotary drill rod protector Download PDFInfo
- Publication number
- CN2457322Y CN2457322Y CN 00252176 CN00252176U CN2457322Y CN 2457322 Y CN2457322 Y CN 2457322Y CN 00252176 CN00252176 CN 00252176 CN 00252176 U CN00252176 U CN 00252176U CN 2457322 Y CN2457322 Y CN 2457322Y
- Authority
- CN
- China
- Prior art keywords
- sliding sleeve
- thrust
- inner sliding
- hoop
- drilling rod
- 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 relates to a non-rotary drilling rod protector, which is composed of a sliding sleeve, an inner sliding sleeve, a thrust sleeve, an upper thrust hoop and a lower thrust hoop. The inner sliding sleeve is fixed on a drilling rod, and the sliding sleeve is sheathed on the outer circumferential surface of the inner sliding sleeve. A gap is arranged between the inner sliding sleeve and the sliding sleeve. The inner sliding sleeve and the sliding sleeve are both made from thermoplastic polymer with low friction. The inner sliding sleeve and the sliding sleeve have low friction and self-lubricating performance. The non-rotary drilling rod protector can cause a casing pipe and the drilling rod to be disengaged or completely disengaged. The relative rotation between the drilling rod and the casing pipe is converted into the relative rotation between the sliding sleeve and the inner sliding sleeve. A liquid force bearing which is composed of the sliding sleeve and the inner sliding sleeve can lower torque and friction resistance. The abrasion of the casing pipe is reduced. The non-rotary drilling rod protector is suitable for a deep well, a super-deep well, a horizontal well and a large displacement well in petroleum drilling wells.
Description
The utility model relates to the drilling tool in a kind of oil drilling, the non-rotating drill pipe protector of the reduction casing wear that especially uses on oil drill rocker.
In drilling process, drilling rod (instrument pipe nipple) when entering sleeve pipe and sleeve pipe come in contact, produce friction, moment of torsion and frictional resistance are increased, sleeve pipe weares and teares.Especially when boring deep-well ultradeep well, horizontal well and extended reach well, casing wear is a problem that can not be ignored.
The failure mechanism of casing wear is grinding loss and adhesive wear, and this is because drilling rod in the slurry environment of abrasive particle is arranged, under the promotion of lateral force, is close on the casing wall rotation and slides and produce.This is never had effective solution, when for example fetching water horizontal well, can only bend towards level gradually with drill bit, drilling rod is attached on the borehole wall, will certainly increase the friction torque of drilling rod the borehole wall, worn out sleeve pipe easily, the formation accident.Also have rubber is directly wrapped on the drilling rod,, fall the DeGrain of turning round, and synthetic rubber regular meeting " fragmentation " lost efficacy because the friction between rubber and the joint is big.
The purpose of this utility model is: a kind of non-rotating drill pipe protector is provided, makes it can reduce the wearing and tearing of drilling rod to sleeve pipe effectively, reduce the friction torque and the frictional resistance of drilling rod when rotation and the borehole wall or sleeve pipe simultaneously.
The purpose of this utility model is to adopt following technical proposals to realize: a kind of non-rotating drill pipe protector of being made up of sliding sleeve, inner sliding sleeve, thrust housing, last thrust hoop and following thrust hoop; this non-rotating drill pipe protector is installed on the drilling rod, and its inner sliding sleeve is fixed on the drilling rod by last thrust hoop and following thrust hoop.The end face of thrust housing and last thrust hoop is stuck in the upper surface of inner sliding sleeve after fastening with screw, gapped between inner sliding sleeve and the sliding sleeve.Following thrust hoop is stuck in the lower surface of inner sliding sleeve, and the conical surface of following thrust hoop and the conical surface of inner sliding sleeve are adjacent to.
Described inner sliding sleeve is low frictional heat thermoplastic polymer inner sliding sleeve, and sliding sleeve is low frictional heat thermoplastic polymer sliding sleeve, and thrust housing is low frictional heat thermoplastic polymer thrust housing.
Owing to adopt technique scheme, make the utility model compared with prior art have following advantage:
1, the utility model non-rotating drill pipe protector is when work; form one " hydraulic bearing " between its sliding sleeve and the inner sliding sleeve and bear relatively rotating between drilling rod and the sleeve pipe; thereby avoided the direct contact between drilling rod and the sleeve pipe, reduced moment of torsion and frictional resistance, protected sleeve pipe.
See also shown in Fig. 2 A, when not using non-rotating drill pipe protector, under the promotion of lateral force, tool joint 7 contacts with casing wall 8, also has relative to rotating fast except axial slip between them, and in the mud of abrasive particle was arranged, sleeve pipe was easy to be worn.After using non-rotating drill pipe protector, because sliding sleeve 3 external diameters are bigger than tool joint 7, so sliding sleeve 3 contacts with internal surface of sleeve pipe 8, drilling rod and sleeve pipe break away from, and see shown in Fig. 2 B.Inner sliding sleeve is fixed on the drilling rod by thrust hoop up and down, slides under the effect of lateral force to be attached on the casing wall, and relatively rotating between drilling rod and the sleeve pipe has been transformed between sliding sleeve and the inner sliding sleeve.Between sliding sleeve and the inner sliding sleeve certain clearance is arranged, when drilling rod drives the inner sliding sleeve rotation, form lubricating film, sliding sleeve and inner sliding sleeve are formed one " hydraulic bearing ".If " hydraulic bearing " lost efficacy under the overload situation, because sliding sleeve and inner sliding sleeve are made by low frictional heat thermoplastic polymer, low friction and self-lubricating property that its material itself is good make the friction factor between the two also can be much lower with respect to the friction between drilling rod and the sleeve pipe.Simultaneously, moving axially also between drilling rod and the sleeve pipe replaced by the slip between sliding sleeve and the sleeve pipe.So just make the wearing and tearing of sleeve pipe to alleviate greatly, reduced moment of torsion and frictional resistance simultaneously.
2, sliding sleeve and inner sliding sleeve (i.e. " hydraulic bearing ") are mainly processed by the high-performance thermoplastic material, this material not only has low friction self-lubricating property, and has a favorable mechanical performance, so, it synthetic rubber can not occur and generally run into " fragmentation " inefficacy, and has higher operating temperature and better frictional behavior.
3, the utility model non-rotating drill pipe protector is installed on the drilling rod, does not take the run of steel space, does not influence the strength and stiffness of drilling rod, and any amount can be installed as required, and is to guarantee that drilling rod does not contact fully with sleeve pipe, convenient, flexible.
4, the utility model non-rotating drill pipe protector is easy to loading and unloading, need not special-purpose handling instrument and special technique, and is simple to operate, quick.
Below in conjunction with drawings and Examples the utility model is further specified:
Fig. 1 is the structure chart of the utility model non-rotating drill pipe protector
Fig. 2 A is that drilling rod does not contact schematic diagram with sleeve pipe when using non-rotating drill pipe protector
Drilling rod and sleeve pipe disengaged schematic diagram when Fig. 2 B was to use non-rotating drill pipe protector
Among the figure, 1. 2. times thrust hoops of drilling rod, 3. sliding sleeves, 4. inner sliding sleeves
5. thrust hoop 7. tool joints 8. casing walls on the thrust housing 6.
Figure 1 shows that an embodiment of the utility model non-rotating drill pipe protector, this non-rotating drill pipe protector is installed on the drilling rod 1, is made up of sliding sleeve 3, inner sliding sleeve 4, thrust housing 5, last thrust hoop 6 and following thrust hoop 2.Its inner sliding sleeve 4 is fixed on the drilling rod 1 by upper and lower thrust hoop 6,2, and the end face of thrust housing 5 and last thrust hoop 6 is stuck in the upper surface of inner sliding sleeve 4 after fastening with screw.Thrust housing 5 can prevent the play up and down of inner sliding sleeve 4.Sliding sleeve 3 is enclosed within on the outer circumference surface of inner sliding sleeve 4, and is gapped between inner sliding sleeve 4 and the sliding sleeve 3.Following thrust hoop 2 is stuck in the lower surface of inner sliding sleeve 4, and the conical surface of the conical surface of following thrust hoop 2 and inner sliding sleeve 4 is adjacent to.
Inner sliding sleeve 4 in the utility model structure is low frictional heat thermoplastic polymer inner sliding sleeve, and sliding sleeve 3 is low frictional heat thermoplastic polymer sliding sleeve, and thrust housing 5 is low frictional heat thermoplastic polymer thrust housing.
On the inwall of inner sliding sleeve 4 and upper and lower thrust hoop 6,2, also be embedded with the grains of sand,, play anti-skidding effect to increase friction.
The utility model is applicable to and bores deep-well ultradeep well, horizontal well and extended reach well.
Claims (4)
1, a kind of non-rotating drill pipe protector, it is characterized in that: comprise sliding sleeve (3), inner sliding sleeve (4), thrust housing (5), go up thrust hoop (6) and following thrust hoop (2), described non-rotating drill pipe protector is installed on the drilling rod (1), its inner sliding sleeve (4) is fixed on the drilling rod (1) by last thrust hoop (6) and following thrust hoop (2), the end face of thrust housing (5) and last thrust hoop (6) is stuck in the upper surface of inner sliding sleeve (4) after fastening with screw, sliding sleeve (3) is enclosed within on the outer circumference surface of inner sliding sleeve (4), and is gapped between inner sliding sleeve (4) and the sliding sleeve (3); Following thrust hoop (2) is stuck in the lower surface of inner sliding sleeve (4), and the conical surface of the conical surface of following thrust hoop (2) and inner sliding sleeve (4) is adjacent to.
2, non-rotating drill pipe protector according to claim 1 is characterized in that: described inner sliding sleeve (4) is low frictional heat thermoplastic polymer inner sliding sleeve, and described sliding sleeve (3) is low frictional heat thermoplastic polymer sliding sleeve; Described thrust housing (5) is low frictional heat thermoplastic polymer thrust housing; Sliding sleeve (3) is combined by two semicircle covers, and the bound fraction of two semicircles cover is concavo-convex relative rectangular channel and rectangular block, and each rectangular block can insert respectively in the rectangular channel of half cover in addition and be combined into one, and uses screw lock.
3, non-rotating drill pipe protector according to claim 1 is characterized in that: the described thrust hoop (6) of going up is thrust hoop on the aluminium alloys, and following thrust hoop (2) is a thrust hoop under the aluminium alloys; Last thrust hoop (6) and following thrust hoop (2) all for being combined by two semicircle hoops, are used some screw lock in the joint portion.
4, non-rotating drill pipe protector according to claim 1 is characterized in that: be embedded with the grains of sand on the inwall of inner sliding sleeve (4) and upper and lower thrust hoop (6), (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00252176 CN2457322Y (en) | 2000-11-22 | 2000-11-22 | Non-rotary drill rod protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00252176 CN2457322Y (en) | 2000-11-22 | 2000-11-22 | Non-rotary drill rod protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2457322Y true CN2457322Y (en) | 2001-10-31 |
Family
ID=33609897
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00252176 Expired - Fee Related CN2457322Y (en) | 2000-11-22 | 2000-11-22 | Non-rotary drill rod protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2457322Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103510871A (en) * | 2012-06-21 | 2014-01-15 | 中国石油化工股份有限公司 | Complex structural well drag-reduction wrenching-reduction compound drilling method |
| US10711535B2 (en) | 2013-05-29 | 2020-07-14 | Paradigm Drilling Services Limited | Downhole apparatus and method |
| CN112761546A (en) * | 2021-02-04 | 2021-05-07 | 西南石油大学 | Drag-reducing and wear-resisting drill string protector |
-
2000
- 2000-11-22 CN CN 00252176 patent/CN2457322Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103510871A (en) * | 2012-06-21 | 2014-01-15 | 中国石油化工股份有限公司 | Complex structural well drag-reduction wrenching-reduction compound drilling method |
| US10711535B2 (en) | 2013-05-29 | 2020-07-14 | Paradigm Drilling Services Limited | Downhole apparatus and method |
| 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 | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |