CN202348274U - Nonmagnetic wearable protective casing - Google Patents
Nonmagnetic wearable protective casing Download PDFInfo
- Publication number
- CN202348274U CN202348274U CN2011205086458U CN201120508645U CN202348274U CN 202348274 U CN202348274 U CN 202348274U CN 2011205086458 U CN2011205086458 U CN 2011205086458U CN 201120508645 U CN201120508645 U CN 201120508645U CN 202348274 U CN202348274 U CN 202348274U
- Authority
- CN
- China
- Prior art keywords
- wearable
- wear
- nonmagnetic
- bulge loop
- rings
- 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 discloses a nonmagnetic wearable protective casing, which comprises a wearable casing body with a round tube structure. A large-aperture thread and a small-aperture thread are arranged on an inner side at each of the two ends of the wearable casing body sequentially from outside to inside. Seven to nine convex rings with trapezoidal sections are arranged on a middle part outside the wearable casing body. Seven to nine wearable rings are connected to the convex rings in a welding way. The convex rings and the wearable rings are arranged at intervals of 30 to 40mm. Compared with the prior art, the nonmagnetic wearable protective casing has the advantages of high hardness, high toughness, high impact resistance, high corrosion resistance, no magnetism, high machinability, simple structure, convenience in use and the like.
Description
Technical field
The utility model relates to oil well boring tool resist technology field, is specifically related to a kind of no magnetic wear-resistant protection cover.
Background technology
In the oil well probing, instrument is under measuring well during geologic feature, because the induction in big earth's magnetic field; Make the data of measuring apparatus skew occur, can not obtain correct metrical information data, so underground survey must have a no magnetic environment; Yet in drilling process; Drilling tool is worked in magnetic environment, and this just makes instrument lose efficacy, and error appears in data.How according to valid data, state under analysis, judgement, the interpretation and evaluation oil well obtains the actual geologic feature in down-hole; In time grasp control oil well track and oil reservoir spatial relationship, drilling tool owing to HTHP, is added the effect of telluric magnetic force underground simultaneously; Make instrument damage; Measuring apparatus can not be effectively protected, and this just relates to the problem of drilling tool protective sleeve, does not have in the probing drilling tool use the protective sleeve series products at present as yet.
The utility model content
The purpose of the utility model is exactly the defective that exists to prior art, and a kind of no magnetic wear-resistant protection cover is provided.
Its technical scheme is: the wear-resistant sleeve body that comprises circular tube structure.The inboard ecto-entad in said wear-resistant sleeve body two ends is provided with large calibre threads and small-bore screw thread successively, and it is trapezoidal bulge loop that its outer middle side part is provided with the cross section, has been welded to connect wear ring on this bulge loop.
Wherein, said bulge loop and wear ring all are made as 7-9 roads, and its spacing is 30-40mm.
The utility model has that hardness height, toughness are strong, high impact-resistant and a corrosion resistance compared with prior art, has no magnetic and favorable mechanical processing characteristics and advantage such as simple in structure, easy to use.
Description of drawings
Fig. 1 is the structural representation of a kind of embodiment of the utility model.
The specific embodiment
With reference to Fig. 1, a kind of no magnetic wear-resistant protection cover comprises the wear-resistant sleeve body 1 of circular tube structure.The inboard ecto-entad in wear-resistant sleeve body 1 two ends is provided with large calibre threads 3 and small-bore screw thread 2 successively, and it is trapezoidal bulge loop 4 that its outer middle side part is provided with the cross section, has been welded to connect wear ring 5 on this bulge loop 4.Wherein, bulge loop 4 and wear ring 5 all are made as 7-9 roads, and its spacing is 30-40mm.
Wear-resistant sleeve body 1 in the utility model, it is trapezoidal bulge loop 4, wear ring 5 that its outside is provided with the cross section, is with no magnetic welding technology to be welded; Wear ring 5 upper width 20-30mm outside wear-resistant sleeve body 1, wear-resistant sleeve is long and external diameter is definite according to well-drilling borehole and designing requirement, and internal diameter is less than being protected instrument external diameter 1-1.5mm.The inboard ecto-entad in wear-resistant sleeve body 1 two ends is provided with large calibre threads 3 and small-bore screw thread 2 successively; It is inch screw thread and processes, when connecting drilling tool, and can be according to drilling tool main body needs; At any time the reinforcement that can extend is reinforced the change of drilling tool oil pipe and is buckled; When the utility model wear-resistant sleeve when connecting any end of drilling tool, two end joints have changed original button tooth power and have distributed and be parabolic shape under the axial tension effect.Adopt suitable varying pitch process reform displacement amount and displacement point, button tooth power is distributed be improved, improve the casing string supporting capacity.
The utility model has solved the down-hole equipment that exists in the prior art easily by erosion and friction, causes the drilling tool wear problems, can protect the protection of oil drilling downhole instrument abrasionproof.
Claims (2)
1. no magnetic wear-resistant protection cover; The wear-resistant sleeve body that comprises circular tube structure; It is characterized in that: the inboard ecto-entad in said wear-resistant sleeve body two ends is provided with large calibre threads and small-bore screw thread successively, and it is trapezoidal bulge loop that its outer middle side part is provided with the cross section, has been welded to connect wear ring on this bulge loop.
2. no magnetic wear-resistant protection cover according to claim 1, it is characterized in that: said bulge loop and wear ring all are made as 7-9 roads, and its spacing is 30-40mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205086458U CN202348274U (en) | 2011-12-09 | 2011-12-09 | Nonmagnetic wearable protective casing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205086458U CN202348274U (en) | 2011-12-09 | 2011-12-09 | Nonmagnetic wearable protective casing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202348274U true CN202348274U (en) | 2012-07-25 |
Family
ID=46537283
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205086458U Expired - Fee Related CN202348274U (en) | 2011-12-09 | 2011-12-09 | Nonmagnetic wearable protective casing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202348274U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9810030B2 (en) | 2013-06-03 | 2017-11-07 | Evolution Engineering Inc. | Mud motor with integrated abrasion-resistant structure |
-
2011
- 2011-12-09 CN CN2011205086458U patent/CN202348274U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9810030B2 (en) | 2013-06-03 | 2017-11-07 | Evolution Engineering Inc. | Mud motor with integrated abrasion-resistant structure |
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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 |
Granted publication date: 20120725 Termination date: 20141209 |
|
| EXPY | Termination of patent right or utility model |