CN2479187Y

CN2479187Y - Sucker rod nylon paraffin cutting centralizer

Info

Publication number: CN2479187Y
Application number: CN 01225062
Authority: CN
Inventors: 谷江峰
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-06-01
Filing date: 2001-06-01
Publication date: 2002-02-27
Anticipated expiration: 2011-06-01

Abstract

The utility model relates to a high wax-bearing mine of the oil field or a directional deviated well which employs a pumping rod and a nylon paraffin scraping pickup finger of the pumping rod which is used in the short-circuit of mechanical oil pumping. The utility model solves the problem of abrading to breakdown and wore out of a coupling and the pumping rod or a short-circuit body. The utility model is characterized in that the wall of a rod body (4) is stuck with a locking body, then enabling a nylon paraffin scraping guide body (2) with a plurality of beads (7) on the surface injected on a outer wall and an upper and a lower end faces of a locking body (3), after being stuck and fixed on the locking body. The utility model is provided with the functions of strengthening body resistance and paraffin scraping, simultaneously, the utility model reduces the bend and Sodom phenomenon during the process of operation of the pumping rod or the short-circuit, overcomes the problems of abrasion and wore out, prevents escapement and dropping, and extends the cycle of heated scrub and pump-checking.

Description

Nylon sucker rod paraffin cutting centralizer

The utility model relates to the oil field high wax containing well or deviated directional drilling utilizes sucker rod or the used centralizer of short circuit machinery oil pumping, belongs to nylon sucker rod paraffin cutting centralizer.

In the oil field, high wax containing well or deviated directional drilling are more at present, adopt sucker-rod pumping mostly.But because the viscosity of high wax containing well is big, make sucker rod or short circuit in running up and down, resistance increases, and often need carry out paraffin cutting to oil pipe, even to oil well clean-out service such as carry out that heat is washed, expense is higher, and effect is bad; And deviated directional drilling causes sucker rod or short circuit wear out failure because sucker rod in running, makes sucker rod or short circuit produce bending and whiplash phenomenon easily, even worn out and be forced to the oil pumper closing well, influences ordinary production.

The purpose of this utility model is to avoid the weak point that exists in the above-mentioned present technology, and a kind of wear out failure and worn out nylon sucker rod paraffin cutting centralizer stopped is provided.

The purpose of this utility model can reach by the following technical programs: this nylon sucker rod paraffin cutting centralizer reaches upward lower contact by the body of rod to be formed, and it is characterized in that: have some fin nylon paraffin cutting guide waies to be injection-moulded in positioning body outer wall and upper and lower end face on the surface behind the body of rod wall cementation positioning body.

There are four rotation shapes or a bar shaped fin in above-mentioned guide way surface.

The utility model has following advantage than above-mentioned prior art: since behind the body of rod cementation positioning body of this centralizer with the guide way injection moulding on it, make this centralizer in the process that moves up and down along with sucker rod or short circuit, play and to play centralizing function, can play the paraffin cutting effect again, bending and whiplash phenomenon in sucker rod or the short circuit running have been reduced, and can keep the unimpeded of oil stream, not influence production; The material of paraffin cutting guide way is selected wear-resistant, anticorrosive, resistant to elevated temperatures nylon in addition, and the surface is difficult for wax deposition, friction factor is little, makes this centralizer overcome wearing and tearing and worn out, has prevented the problem of scurrying the position, coming off, and has prolonged that heat is washed, pump detection period.

Accompanying drawing 1 is that structure of the present utility model is cutd open figure;

Accompanying drawing 2 is A-A sectional views of Fig. 1;

Accompanying drawing 3 is that the another kind of structure that the utility model is used is cutd open figure;

Accompanying drawing 4 is B-B sectional views of Fig. 3.

Below in conjunction with accompanying drawing the utility model is further described:

As Fig. 1 in conjunction with shown in Figure 2, this nylon sucker rod paraffin cutting centralizer is by the body of rod 4 and go up lower contact (1,5) form, with 2 injection mouldings of paraffin cutting guide way its positioning body 3 outer walls and upper and lower end face, make guide way 2 firmly be fixed on positioning body 3 outer walls, upper and lower end face and the body of rod 4 behind the body of rod 4 cementation positioning bodies 3; During actual the use, will go up lower contact (1,5) and connect sucker rod respectively and can use.As shown in Figure 3, also can the 2 direct injection mouldings of paraffin cutting guide way be placed in the body of rod 4 mutually according to reality, make between the body of rod 4 and the guide way 2 gappedly 6, guide way 2 can slide up and down along the body of rod 4, during actual the use, connects between the sucker rod and can use; As Fig. 1 in conjunction with shown in Figure 3, the material of paraffin cutting guide way 2 is selected wear-resistant, anticorrosive, resistant to elevated temperatures nylon, and the surface is difficult for wax deposition, friction factor is little, make this centralizer can play centralizing function, can play the paraffin cutting effect again, reduce bending and whiplash phenomenon in sucker rod or the short circuit running, overcome wearing and tearing and worn out, the problem that prevented to scurry the position, comes off has prolonged that heat is washed, pump detection period; 47 (as shown in Figure 4) of rotation shape fin are arranged on the surface of paraffin cutting guider 2 in addition, make that facing 7 of fins mutually forms the rotation recessed channel, keep the unimpeded of oil stream, do not influence production.Fin 7 can be a bar shaped (as shown in Figure 2) according to actual needs in addition, makes that facing 7 of fins mutually forms the lattice framing recessed channel, same the unimpeded of oil stream that keep.

Claims

1, a kind of oil field that relates to utilizes sucker rod or the used nylon sucker rod paraffin cutting centralizer of short circuit machinery oil pumping, by the body of rod (4) and upward lower contact (1,5) form, it is characterized in that: have some fins (7) nylon paraffin cutting guide waies (2) to be injection-moulded in positioning body (3) outer wall and upper and lower end face on the surface behind the body of rod (4) the wall cementation positioning body (3).

2, nylon sucker rod paraffin cutting centralizer according to claim 1 is characterized in that: there are four fins (4) on guide way (2) surface.

3, according to claim 1,2 described nylon sucker rod paraffin cutting centralizers, it is characterized in that: fin (7) can be rotation shape.

4, according to claim 1,2 described nylon sucker rod paraffin cutting centralizers, it is characterized in that: fin (7) can be a bar shaped.