CN204225794U - Small casing pumpingh well preventing sucker rod from slanting-wear thermosetting formula centralizer - Google Patents
Small casing pumpingh well preventing sucker rod from slanting-wear thermosetting formula centralizer Download PDFInfo
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- CN204225794U CN204225794U CN201420447071.1U CN201420447071U CN204225794U CN 204225794 U CN204225794 U CN 204225794U CN 201420447071 U CN201420447071 U CN 201420447071U CN 204225794 U CN204225794 U CN 204225794U
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- wear
- sucker rod
- small casing
- slanting
- pumpingh well
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Abstract
Be the small casing pumpingh well preventing sucker rod from slanting-wear thermosetting formula centralizer that petroleum industry uses disclosed in the utility model, its body peripheral interval arranges wiper block.Wiper block is the trapezoidal blocks of spiral, and its root is wide, outer end is narrow, and the guiding gutter formed makes liquid smoothness logical.The utility model adopts thermoplastic techniques, manufactures with superpower nylon material, is arranged on sucker rod body of rod two ends and middle position, prevents the wearing and tearing of rod collar and bar body; Add carbon fiber nanometer material in formula for raw stock, make it have more wear resistence.The utility model proves through field trial, and its righting is effective, substantially prolongs the pump detection period of small casing eccentric wear pumpingh well; High temperature resistant, corrosion-resistant; Intensity is large, difficult drop-off; Technology maturation, dependable performance.
Description
Technical field
The utility model belongs to the down-hole oil production aid of petroleum industry.Especially small casing pumpingh well preventing sucker rod from slanting-wear thermosetting formula centralizer, this instrument uses superpower nylon material to manufacture, and adopts thermoplastic techniques to be arranged on sucker rod body of rod two ends and middle position, carries out righting to the sucker rod of small casing pumpingh well.
Background technology
Along with the deep development in oil field, the small casing oil wells get of operation is many.After small casing well cementation, pit shaft internal diameter significantly reduces, the degree of depth entered under pipe bar and diameter are very restricted, due to falling sharply of internal diameter, cause in the middle part of operation completion tubular column, bottom can only use 2 cun of little oil pipes, and eccentric wear well section is often be in tubing string middle and lower part.Owing to lacking necessary, supporting slim-hole preventing offset wear pumping well instrument and pipe bar gap is significantly reduced, cause small casing pumpingh well eccentric wear phenomenon very serious.Development eccentric abrasion prevention thermosetting formula centralizer, the technological means by less expensive practicality solves the eccentric wear problem of small casing pipe well.
Summary of the invention
The purpose of this utility model is to provide small casing pumpingh well preventing sucker rod from slanting-wear thermosetting formula centralizer, for small casing pumpingh well provides supporting eccentric abrasion prevention instrument, solve the problem that small casing pumpingh well eccentric wear is serious, play the object extending small casing pumpingh well pump detection period.
Technical solution of the present utility model is: small casing pumpingh well preventing sucker rod from slanting-wear thermosetting formula centralizer is provided with centre bore, and its body peripheral interval arranges wiper block.Wiper block is the trapezoidal blocks of spiral, and its root is wide, outer end is narrow, and the guiding gutter formed makes liquid smoothness logical.
The utility model has following useful effect: the spaced wiper block of the utility model body peripheral is the trapezoidal blocks of spiral, and the guiding gutter formed makes liquid smoothness logical.Adopt thermoplastic techniques, manufacture with superpower nylon material, be arranged on sucker rod body of rod two ends and middle position, prevent the wearing and tearing of rod collar and bar body; Add carbon fiber nanometer material in formula for raw stock, make it have more wear resistence.External form of the present utility model helically type, therefore has enlarge active surface, alleviates the function of eccentric wear; Adopt unique anticreep technology and one-shot forming technique, make it not come off under down-hole and the larger frictional force of oil pipe.The utility model proves through field trial, and its righting is effective, substantially prolongs the pump detection period of small casing eccentric wear pumpingh well; High temperature resistant, corrosion-resistant; Intensity is large, difficult drop-off; Technology maturation, dependable performance, has promotion prospect.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is left view of the present utility model.
Detailed description of the invention
Be described in further detail the utility model below in conjunction with accompanying drawing: see Fig. 1 and Fig. 2, small casing pumpingh well preventing sucker rod from slanting-wear thermosetting formula centralizer is provided with centre bore 3, and its body peripheral interval arranges wiper block 1.Wiper block 1 is the trapezoidal blocks of spiral, and its root is wide, outer end is narrow, is provided with chamfering 2 at the end face at the trapezoidal blocks two ends of spiral, its angle initialization between 28 °-50 °, as 38 °, 39 °, 40 ° etc.The angle of chamfering 2 is 45 °, is best angle.The spiral angle of the guiding gutter 4 between wiper block 1 is set between 42 °-48 °, as 43 °, 45 ° and 47 ° of angles.The spiral angle of guiding gutter 4 is 45 °, is optimal selection angle.The external diameter of this centralizer is set in 44mm-48mm, and external diameter is 46mm is optimal selection; The internal diameter of its centre bore 3 be greater than sucker rod external diameter 0.8mm-1.2mm, to be greater than 1mm be optimal selection.
Claims (6)
1. small casing pumpingh well preventing sucker rod from slanting-wear thermosetting formula centralizer, it is characterized in that, this centralizer is provided with centre bore, and its body peripheral interval arranges wiper block; Wiper block is the trapezoidal blocks of spiral, and its root is wide, outer end is narrow, and be provided with chamfering at the end face at the trapezoidal blocks two ends of spiral, its angle initialization is between 28 °-50 °.
2. small casing pumpingh well preventing sucker rod from slanting-wear thermosetting formula centralizer according to claim 1, it is characterized in that, the angle of chamfering is 45 °.
3. small casing pumpingh well preventing sucker rod from slanting-wear thermosetting formula centralizer according to claim 1, it is characterized in that, the spiral angle of the guiding gutter between wiper block is set between 42 °-48 °.
4. small casing pumpingh well preventing sucker rod from slanting-wear thermosetting formula centralizer according to claim 3, it is characterized in that, the spiral angle of guiding gutter is 45 °.
5. small casing pumpingh well preventing sucker rod from slanting-wear thermosetting formula centralizer according to claim 1, it is characterized in that, the external diameter of this centralizer is set in 44mm-48mm, and the internal diameter of its centre bore is greater than the external diameter 0.8mm-1.2mm of sucker rod.
6. small casing pumpingh well preventing sucker rod from slanting-wear thermosetting formula centralizer according to claim 5, it is characterized in that, the external diameter of this centralizer is 46mm; The internal diameter of its centre bore is greater than the external diameter 1mm of sucker rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420447071.1U CN204225794U (en) | 2014-08-11 | 2014-08-11 | Small casing pumpingh well preventing sucker rod from slanting-wear thermosetting formula centralizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420447071.1U CN204225794U (en) | 2014-08-11 | 2014-08-11 | Small casing pumpingh well preventing sucker rod from slanting-wear thermosetting formula centralizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204225794U true CN204225794U (en) | 2015-03-25 |
Family
ID=52923903
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420447071.1U Active CN204225794U (en) | 2014-08-11 | 2014-08-11 | Small casing pumpingh well preventing sucker rod from slanting-wear thermosetting formula centralizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204225794U (en) |
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2014
- 2014-08-11 CN CN201420447071.1U patent/CN204225794U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |