CN2573654Y

CN2573654Y - Pumping rod collar rotating centering guide

Info

Publication number: CN2573654Y
Application number: CN 02240395
Authority: CN
Inventors: 赵科昌
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-07-16
Filing date: 2002-07-16
Publication date: 2003-09-17
Anticipated expiration: 2012-07-16

Abstract

The utility model relates to a collar rotating centering guide used in an oil field, which solves the problems of wear-out failure and wear penetration between a collar of a sucker rod and an oil pipe. The collar rotating centering guide is used so that the batch use of collars is replaced, which saves a large quantity of funds for an oil field, and furthermore, all the technical proposals involving the prevention of the eccentric wear of sucker rods and sucker pipes are solved. The product is characterized in that a collar main body generally used in batch in the process of oil production technology is used; an improvement is made on the external shape of the collar main body so that the collar main body is provided with two ends each of which has an effective diameter that can be positioned; a centering guide with the capability of left and right gyration within a restricted space is assembled on the collar main body. As a result, the effects of not only no increase of hung pumps but also effective centering are achieved, and thereby, profit space is created for the sustainable development of countrywide oil fields.

Description

Rod collar rotation centralizer

Affiliated technical field

The utility model relates to the oilfield machinery employed a kind of erection device of controlling the eccentric wear well of pumping, and especially not increasing under the condition that pump hangs, can play and set upright rod tube and strike off a kind of rod collar rotation centralizer of being bonded in the long-pending cured effect of tube inner wall.

Background technology

At present, the employed centralizer of oil field machinery oil, be by two relative socket joints of semicircular body with, be fixed on the structure on the sucker rod, in oil pumper drive horse head moves up and down process, this centralizer is because of being fixed together with bar, then play setting upright of rod tube, but, this structure is met the higher well section of ground temperature because lack of standardization and this product of sucker rod manufacturing dimension has all used nylon material, and material generation thermal deformation causes descending with the power of holding tightly of bar, often the centralizer that forms multiple position on the bar has been connected in series together at last, can't play centralizing function and rod tube be set upright for the oil field mechanical oil recovery to cause difficulty.

Summary of the invention

In order to overcome the deficiency of existing oilfield machinery oil pumping on the centralizer performance of usefulness, the utility model provides a kind of rod collar rotation centralizer, this rod collar rotation centralizer not only can play the centralizing function of rod and tube partial-wear, be bonded in surplus cured on the oil pick-up tube inwall but also can strike off at any time, and be prerequisite not increase that original pump hangs.

The technical scheme that its technical problem that solves the utility model adopts is: the former routine of sucker rod fixedly on the position of box cupling one of displacement take two to be internal thread with sucker rod and an end is that internal thread one end is an external screw thread, with the interlude size decreases, a cylindrical is set any bar fin is arranged, and the entity arbitrarily angled and in the middle of fin and internal diameter that tilts has been filled a netted tubular metallic framework, be closely as one with this part portraitlandscape, two ends are the wherein end employing gland and the main body stationary fit of structure of internal thread, one end is an internal thread, one end is that the structure and the locking of this part of externally threaded employing locknut is one, when being used for operation, can go into the well after two ends and sucker rod join up and down, because centralizer can fluctuate at this part, left rotation and right rotation, thereby reduced frictional resistance widely, play the effect of setting upright rod tube simultaneously, and do not increased the pump extension.Reached and set upright, scraped cured dual purpose.

The beneficial effects of the utility model are: when setting upright rod and tube partial-wear, scrape except tube inner wall surplus curedly at any time, conveniently simultaneously install and solved the displacement problem, do not increase pump and hang.

Description of drawings:

Below in conjunction with drawings and Examples the utility model is further specified

Fig. 1 is the structure and the sectional view of the utility model basic model.

Fig. 2 is the structure and the sectional view of the utility model list double end type of attachment.

Fig. 3 is the structure and the sectional view of the utility model double end type of attachment.

Fig. 4 is the structure and the sectional view of the utility model single head type of attachment.

Box cupling body (8) links to each other with centralizer (9) in Fig. 1, common end face contact is the plane and links to each other, for after guaranteeing two end faces of box cupling and sucker rod being connected not because centralizer (9) outer through size increasing and form the end resistance, 18 ° of-40 ° of angles have been designed at the two ends of centralizer (9), simultaneously, in order to prevent the broken holddown of centralizer (9), box cupling body (8) two end mills are logical, make box cupling body (8) and centralizer (9) with just formed lock ring after sucker rod is connected, because tightening of both ends of the surface makes centralizer end face hoop (10) and box cupling body (8) be incorporated into one fully, avoided the broken holddown of centralizer (8).

In Fig. 2, box cupling body (11) is formed by connecting with box cupling body (12) and centralizer cover (13), and centralizer overlaps and box cupling body (12), (13) have kept a certain amount of gap, can rotate around the axle center.

In Fig. 3, box cupling body (14) is formed by connecting with box cupling body (15) and centralizer cover (16), on the symmetrical excircle of this centralizer (16), designed the equal portions groove, convenient and guaranteed that foreign material closely release by the groove buffering in the oil pumping process, what solved high density eccentric wear well section sets upright the effect technical problem.

In Fig. 4, box cupling body (17) also is formed by connecting with the lining (19) of packing in advance with box cupling locking nut (18) and centralizer cover (13), the centralizer of this kind structure, four road grooves on internal orifice dimension, have been designed, make to overlap in the centralizer all the time and keep the equivalent gap with body, the lubricated supporting positive cover of effect of oil stream will be arranged, can increase the service life.

Claims

1, a kind of rod collar rotation centralizer, put and an end fixed limit, one end cooperates in the spacing steel body connector, can fluctuate, left rotation and right rotation is characterized in that: the internal thread of steel part connector one end and the internal thread of the other end are a concentric circles, and join with its middle real core, or the external screw thread of the internal thread of steel body connector one end and the other end is a concentric circles, and joins with wherein real core.

2, a kind of rod collar rotation centralizer according to claim 1, it is characterized in that: centralizer is the concentric column cavity ring shape cover of an one, protruding again any bar is vertical on the cylindrical of cylinder, left and right inclination, protruding at any angle shuttle, and between the physical layer of this annular cover folder attached the netted steel frame of tubular, two-wayly in length and breadth combine together with centralizer.

3, a kind of rod collar rotation centralizer according to claim 1, it is characterized in that: two ends are the steel body connector of internal thread, wherein an end is that externally threaded steel body connector is connected with steel body connector with locking nut by gland and the stationary fit of steel body connector with an end.