Novel sucker rod centralizer

A technology for sucker rods and centralizers, which is applied to drill pipes, drilling equipment, and earthwork drilling and production, and can solve problems such as the limitation of the effective wear-resistant area of ​​the centralizer, the limitation of the effective area of ​​the diversion of the centralizer, and poor centralization effect. Achieve good wax resistance effect, good righting effect, and large wear-resistant area

Inactive Publication Date: 2011-03-30
江苏星华机场设施有限公司
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0002] At present, most of the centralizers of traditional oil well sucker rods are designed with external flow diversion. On the one hand, due to the design of external flow diversion, the effective diversion area of ​​the centralizer is limited; on the other hand, the effective wear-resistant area of ​​the centralizer is limited. limit, thereby
Poor righting effect and short service life

Method used

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  • Novel sucker rod centralizer
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  • Novel sucker rod centralizer

Examples

Experimental program
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Embodiment Construction

[0016] From as attached figure 1 , 2 , 3, 4 shown in the opening of the main body 1 snap into the sucker rod, and then insert the sucker rod as attached Figure 5 , 6 The wedging body 6 shown in , 7 and 8 is inserted from the top of the main body 1, and the wedging key 7 on the wedging body 6 is inserted into the keyway 2 of the main body 1, so that the main body 1 and the wedging body 6 form a Complete centralizer, the sucker rod is tightly stuck in the centralizer. In the above process, since the joints of the main body 1 and the wedging body 6 are all designed to be large at the top and small at the bottom (in the state shown in the drawings), the bonding of the contact surface after the wedging body 6 is wedged into the main body 1 is ensured. The introduction slope 3 provided at the opening of the main body 1 ensures the smooth introduction of the positioning block 8 on the wedge body 6 into the positioning groove 4 . The cooperation of the positioning block 8 and the...

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Abstract

The invention relates to a sucker rod centralizer. The sucker rod centralizer consists of a main body and a wedged body, and is characterized in that: the main body and the wedged body are provided with a plurality of deflector holes along the moving direction of the sucker rod; and the cross sections of the deflector holes are elliptical, and elliptical minor axes are arranged along the axial direction of the cross sections. The contact surfaces of the main body and the wedged body have the same shapes, the size of the wedged body is equal to that of a vacant part of the main body; and a key and a key slot, which are coupled with each other, are arranged between the outer surface of the wedged body and the inner surface of the vacant part of the main body. The novel sucker rod centralizer has the advantages of good diversion effect, large wear-resisting area, good centralizing effect, high wax resistance and the like, and is convenient to maintain.

Description

technical field [0001] The invention relates to a sucker rod centralizer, which belongs to the auxiliary equipment of the sucker rod. It belongs to the technical field of mechanical manufacturing. Background technique [0002] At present, most of the centralizers of traditional oil well sucker rods are designed with external flow diversion. On the one hand, due to the design of external flow diversion, the effective diversion area of ​​the centralizer is limited; on the other hand, the effective wear-resistant area of ​​the centralizer is limited. limit, thus. Lead to poor righting effect and short service life. Therefore, people hope that a kind of novel centralizer that can overcome above-mentioned shortcoming comes out. Contents of the invention [0003] The object of the present invention is to provide a novel sucker rod centralizer, which not only increases the effective area of ​​flow diversion, but also increases the friction area between the outer wall of the ce...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B17/10
Inventor 荀茂中
Owner 江苏星华机场设施有限公司
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