CN204060551U - A kind of toughness pottery centralizer - Google Patents
A kind of toughness pottery centralizer Download PDFInfo
- Publication number
- CN204060551U CN204060551U CN201420531820.9U CN201420531820U CN204060551U CN 204060551 U CN204060551 U CN 204060551U CN 201420531820 U CN201420531820 U CN 201420531820U CN 204060551 U CN204060551 U CN 204060551U
- Authority
- CN
- China
- Prior art keywords
- tooth
- toughness
- pottery
- righting strip
- centralizer
- 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 kind of toughness pottery centralizer for oil and gas well drilling, forms primarily of the body of rod, righting strip and gauge teeth; Described righting strip be vertical bar tooth-like or for spiral tooth-like, righting strip is fixed on the body of rod; In the righting strip uniform boring in surface, the degree of depth in hole is 8 ~ 9mm, then by the toughness pottery tooth made with in the form load hole of interference fit.Toughness pottery tooth adopts ZrO
2base toughness pottery material makes.The toughness pottery tooth that the utility model adopts is higher than hard-metal insert toughness, strong shock resistance; Manufacture craft is simple; Pottery tooth is large with the chimeric degree of depth of righting strip, improves abrasion resistance and the application life of centralizer.
Description
Technical field
The utility model relates to a kind of toughness pottery centralizer for oil and gas well drilling, belongs to the drilling tool of petroleum industry.
Background technology
Centralising device for drilling tool is serially connected in the downhole tool in BHA bottom hole assemblies in drilling process, for stable drilling tool and control drilling direction.Because the diameter being positioned at drilling tool drill bit is bottom greater than the diameter of its top drilling tool, therefore the borehole diameter got out also is greater than the diameter of top drilling tool, simultaneously, drilling tool is that more piece is serially connected use, larger axial deformation can be produced in well, if do not carry out righting to the drilling tool be serially connected, will be difficult to control drilling direction.Centralising device for drilling tool is just for solving the problem and designing, and its structure mainly contains two kinds of forms, and one is straight-tooth righting strip formula, another kind is spiral righting strip formula.Because centralizer works for a long time under the rugged environment of down-hole, in rotation, lower brill and trip-out process, can be worn when contact with the borehole wall, its application life and being a greater impact with operating efficiency.At present, in order to strengthen abrasion resistance and the application life of centralizer, mostly adopt the method at centralizer surface inserting hard-metal insert.But it is low that the shortcoming of carbide alloy is toughness, to impact and vibration sensing, and carbide alloy is raw material with rare metal, and cost is high, and production technology is also comparatively complicated.
Summary of the invention
The purpose of this utility model is to overcome prior art deficiency, provides a kind of toughness pottery centralizer, to improve abrasion resistance and the application life of centralizer.
The technical solution of the utility model is as follows:
A kind of toughness pottery centralizer of the utility model, forms primarily of the body of rod, righting strip and gauge teeth; Described righting strip be vertical bar tooth-like or for spiral tooth-like, righting strip is fixed on the body of rod; In the righting strip uniform boring in surface, the degree of depth in hole is 8 ~ 9mm, then by the toughness pottery tooth made with in the form load hole of interference fit.
Toughness pottery tooth adopts ZrO
2base toughness pottery material makes.By adding Y
2o
3with the ZrO that other metal oxides are made
2toughness pottery, not only remains ZrO
2the high strength that pottery has, high rigidity, high tenacity, high-wearing feature, good chemical stability, and enhance ZrO
2the fracture toughness of pottery, improves the shortcomings such as the intrinsic fragility of ceramic materials is large, toughness is low.
The utility model advantage compared with prior art: the toughness pottery tooth of employing is higher than hard-metal insert toughness, strong shock resistance, manufacture craft is simple, and cost of production is lower, simultaneously, pottery tooth is large with the chimeric degree of depth of righting strip, improves abrasion resistance and the application life of centralizer.
Accompanying drawing explanation
Fig. 1 is the righting strip of a kind of toughness pottery of the utility model centralizer is the tooth-like structural representation of vertical bar;
Fig. 2 is the A-A sectional view of Fig. 1;
Fig. 3 is righting strip of the present utility model is the tooth-like structural representation of spiral;
Fig. 4 is the B-B sectional view of Fig. 3;
Fig. 5 is toughness pottery tooth schematic diagram of the present utility model.
In figure: 1. the body of rod, 2. righting strip, 3. toughness pottery tooth, 4. hole, 5. gauge teeth.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is further described.
As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4, Fig. 5, a kind of toughness pottery centralizer of the utility model, forms primarily of the body of rod 1, righting strip 2 and gauge teeth 5; Described righting strip 2 be vertical bar tooth-like or for spiral tooth-like, righting strip 2 is fixed on the body of rod 1; In the surperficial uniform boring 4 of righting strip 2, the degree of depth in hole 4 is 8 ~ 9mm, then by the toughness pottery tooth 3 made with in the form load hole 4 of interference fit.Toughness pottery tooth adopts ZrO
2base toughness pottery material makes.
Claims (2)
1. a toughness pottery centralizer, form primarily of the body of rod (1), righting strip (2) and gauge teeth (5), it is characterized in that: described righting strip (2) for vertical bar is tooth-like or for spiral tooth-like, righting strip (2) is fixed on the body of rod (1); The surperficial uniform boring (4) of righting strip (2), the degree of depth to the 8 ~ 9mm of hole (4); Again by the toughness pottery tooth (3) made with in the form load hole (4) of interference fit.
2. a kind of toughness pottery centralizer according to claim 1, is characterized in that: toughness pottery tooth (3) adopts ZrO
2base toughness pottery material makes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420531820.9U CN204060551U (en) | 2014-09-17 | 2014-09-17 | A kind of toughness pottery centralizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420531820.9U CN204060551U (en) | 2014-09-17 | 2014-09-17 | A kind of toughness pottery centralizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204060551U true CN204060551U (en) | 2014-12-31 |
Family
ID=52202090
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420531820.9U Expired - Fee Related CN204060551U (en) | 2014-09-17 | 2014-09-17 | A kind of toughness pottery centralizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204060551U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2585898A (en) * | 2019-07-22 | 2021-01-27 | Vulcan Completion Products Uk Ltd | Centraliser |
-
2014
- 2014-09-17 CN CN201420531820.9U patent/CN204060551U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2585898A (en) * | 2019-07-22 | 2021-01-27 | Vulcan Completion Products Uk Ltd | Centraliser |
| GB2585898B (en) * | 2019-07-22 | 2023-05-31 | Vulcan Completion Products Uk Ltd | Centraliser |
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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: 20141231 Termination date: 20160917 |