CN203161102U - Corrosion-resistant and huge-load sucker rod - Google Patents
Corrosion-resistant and huge-load sucker rod Download PDFInfo
- Publication number
- CN203161102U CN203161102U CN 201320170694 CN201320170694U CN203161102U CN 203161102 U CN203161102 U CN 203161102U CN 201320170694 CN201320170694 CN 201320170694 CN 201320170694 U CN201320170694 U CN 201320170694U CN 203161102 U CN203161102 U CN 203161102U
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- rod
- sucker rod
- corrosion
- straight section
- section cylinder
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Abstract
The utility model discloses a corrosion-resistant and huge-load sucker rod which is applied to a well using the sucker rod in an oilfield. The sucker rod comprises a rod head and a rod body, wherein the rod head is provided with a large excircle and a wrench square; a straight section cylinder is arranged between the large excircle and the rod body, and a large excircle transition arc and a small excircle transition arc are arranged between the straight section cylinder and the large excircle and between the straight section cylinder and the rod body respectively; and the wrench square is arranged on the straight section cylinder and adopts an oblate square. Compared with the conventional sucker rod, the corrosion-resistant and huge-load sucker rod has the advantages that huge change of shapes and sizes in positions between the wrench square and the large excircle and between the wrench square and a mushroom head is eliminated, metallic deflection during forging of the sucker rod is reduced greatly, defects such as forging cracks and the like are reduced, corrosion of a well liquid to the forging cracks of the sucker rod can be reduced effectively, and accordingly, the integral corrosion resistance of the sucker rod can be improved. The structure and shape of the rod head can meet requirements for tensile strength of an H-level sucker rod and for anticorrosion performance of a K-level sucker rod.
Description
Technical field
The utility model is the underground equipment of petroleum industry, and particularly a kind of corrosion-resistant, super large load sucker rod is applied to the well that sucker rod is used in the oil field.
Background technology
Because the tensile strength of K grade pumping rod is low, between 621～793Mpa, can not satisfy and take out requirement deeply, although H grade pumping rod tensile strength has reached 795～1195MPa, but because its spanner side changes greatly with the geomery at big cylindrical, spanner side and mushroom head place, the metal deformation amount is too big when having caused sucker rod to forge, and defectives such as the forge crack of generation are bigger, and such defective has had a strong impact on the ability to the well corrosion in the sucker rod opposing oil well.Regulation K grade pumping rod is fit to have the oil well of corrosion hole condition among " sucker rod " industry standard SY/T5029-2006, and the H grade pumping rod is applicable to overweight load oil well, generally uses the H grade pumping rod in ultradeep well.Development along with oil recovery technique, the ultradeep well of corrosion well liquid has appearred containing, existing K level, KD grade pumping rod can not satisfy the demand of load, the tensile strength of K grade pumping rod is between 621～793Mpa, the tensile strength of KD grade pumping rod is between 795～965Mpa, and the H grade pumping rod does not have resistance to corrosion.Because all there is defective in the bar head of existing K grade pumping rod and H grade pumping rod, its spanner side is multiple edge body, and thinner than the body of rod of two ends bar head, has formed the mushroom head at the body of rod of two ends, spanner side bar head, increase the deflection when sucker rod forges, reduced the resistance to corrosion of this part.Make a kind of load requirement that can satisfy ultradeep well, corrosion-resistant, the super large load sucker rod that can satisfy corrosive environment again is very necessary.
Summary of the invention
The purpose of this utility model is to provide a kind of corrosion-resistant, super large load sucker rod, by changing the structure of existing sucker rod head, strengthens tensile strength and the resistance to corrosion of sucker rod, makes it be applicable to the ultradeep well that contains corrosion well liquid.
Technical solution of the present utility model is: a kind of corrosion-resistant, super large load sucker rod comprises bar head and the body of rod, the bar head is provided with big cylindrical and spanner side, between big cylindrical and the body of rod, be the straight section cylinder, be respectively equipped with big cylindrical transition arc and little cylindrical transition arc between this straight section cylinder and big cylindrical and the body of rod; Be provided with spanner side at this straight section cylinder, spanner side is oblate side.
Compared with prior art the beneficial effects of the utility model are: designed big cylindrical transition arc between the sucker rod body of rod and big cylindrical, between big cylindrical and the body of rod, it is the straight section cylinder, use little cylindrical transition arc and body of rod transition simultaneously, eliminated a mushroom phenomenon.Spanner side at this section is used oblate side, and its sectional area is big, the tensile strength height.Compare with conventional sucker rod, it has eliminated the great variety of spanner side with the geomery at big cylindrical, spanner side and mushroom head place, metal deformation amount when having dwindled the sucker rod forging greatly, defectives such as forge crack have been reduced, can effectively reduce well liquid to the corrosion of sucker rod forge crack, and then improve the whole resistance to corrosion of sucker rod.The utility model has effectively increased tensile strength and the resistance to corrosion of sucker rod, and the planform of bar head can satisfy the H grade pumping rod to the requirement to antiseptic property of the requirement of tensile strength and K grade pumping rod.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the vertical view of the utility model structural representation.
Fig. 3 be among Fig. 2 A-A to cut-away view.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is done further detailed description, referring to Fig. 1, Fig. 2 and Fig. 3, a kind of corrosion-resistant, super large load sucker rod comprises bar head and the body of rod 5, and the bar head is provided with big cylindrical 3 and spanner side 4.Between big cylindrical 3 and the body of rod 5, be the straight section cylinder, be respectively equipped with big cylindrical transition arc 1 and little cylindrical transition arc 2 between this straight section cylinder and big cylindrical 3 and the body of rod 5; Be provided with spanner side 4 at this straight section cylinder, spanner side 4 is oblate sides.Eliminate the great variety with big cylindrical 3 and original sucker rod mushroom head place geomery.
Claims (1)
1. corrosion-resistant, super large load sucker rod, comprise bar head and the body of rod, the bar head is provided with big cylindrical and spanner side, it is characterized in that, between big cylindrical and the body of rod, be the straight section cylinder, be respectively equipped with big cylindrical transition arc and little cylindrical transition arc between this straight section cylinder and big cylindrical and the body of rod; Be provided with spanner side at this straight section cylinder, spanner side is oblate side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320170694 CN203161102U (en) | 2013-04-08 | 2013-04-08 | Corrosion-resistant and huge-load sucker rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320170694 CN203161102U (en) | 2013-04-08 | 2013-04-08 | Corrosion-resistant and huge-load sucker rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203161102U true CN203161102U (en) | 2013-08-28 |
Family
ID=49022295
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320170694 Expired - Fee Related CN203161102U (en) | 2013-04-08 | 2013-04-08 | Corrosion-resistant and huge-load sucker rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203161102U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107152244A (en) * | 2016-03-04 | 2017-09-12 | 特纳瑞斯连接有限公司 | Sucker rod end |
-
2013
- 2013-04-08 CN CN 201320170694 patent/CN203161102U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107152244A (en) * | 2016-03-04 | 2017-09-12 | 特纳瑞斯连接有限公司 | Sucker rod end |
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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: 20130828 Termination date: 20190408 |