CN203334993U

CN203334993U - Sand removal converter

Info

Publication number: CN203334993U
Application number: CN2013202817520U
Authority: CN
Inventors: 吴国辉; 魏后超; 蒋晓波; 刘丽; 于惠明; 刘礼聪; 刘德利; 姜芳; 闫建文; 杨周; 韩敏
Original assignee: China National Petroleum Corp; Liaohe Petroleum Exploration Bureau
Current assignee: China National Petroleum Corp; Liaohe Petroleum Exploration Bureau
Priority date: 2013-05-22
Filing date: 2013-05-22
Publication date: 2013-12-11
Anticipated expiration: 2023-05-22

Abstract

The utility model relates to an oil field underground sand removal work tool, in particular to a sand removal converter. A main body of the sand removal converter is provided with a current transformer hole, a valve seat is fixed on the inner wall of the main body through a cutting pin and blocks the current transformer hole, the space between the main body and the valve seat is sealed through a seal packing, the lower end of the main body is connected with an inverted cone, and the cone surface of the lower end of the inverted cone is provided with a high-pressure jet flow hole. The sand removal converter improves the one-off sand removal success rate, reduces the number of procedures of drill putting-down and sand drilling, shortens the construction period, and lowers work cost, and increases construction speed and economical benefits. The sand removal converter overcomes the defects that a screw needs to be put down firstly for drilling when sand removal is conducted on underground cementation hard sand in the prior art, the number of the construction procedures and work cost are increased, and timeliness shortage in production is reduced.

Description

The sand washing current transformer

Technical field:

The utility model relates to a kind of oil field well sand washing power tool, particularly a kind of sand washing current transformer.

Background technology:

During oil gas water well sand washing operation, the stratum sand setting, under well liquid column pressure and fluid cementation, becomes extremely hard, especially the pressing crack construction well in operation, underground fracture sand and fracturing fluid are cementing under HTHP, form in pit shaft on hard " duricrust ", adopt conventional sand washing method can not wash " duricrust " open, need lower screw drill subdrilling to open, and then lower sand clean out pipe sand washing, so just increase working procedure and operating cost, reduced the production timeliness, affected oil-water well production.

The utility model content:

The technical problems to be solved in the utility model is to provide a kind of sand washing current transformer, and this device has realized improving a sand washing success rate, reduces the lower sand operation of boring, and shortens construction period, reduces operating cost, improves speed of application and economic benefit.While having overcome under existing well cementing hard sand sand washing, need to first descend screw drill to bore and open, increase working procedure and operating cost, reduce the deficiency of production timeliness.

Technical solution adopted in the utility model is: a kind of sand washing current transformer comprises main body, valve seat and steel ball; Have the unsteady flow hole on main body, valve seat is fixed on main body inner wall and blocks the unsteady flow hole by cutting off pin, between main body and valve seat, by sealed packing, seals, and the main body lower end connects back taper, on the conical surface of back taper lower end, has the high-pressure spray hole.

The beneficial effects of the utility model are: the utility model is due to the mode that has adopted high-pressure spray and unsteady flow, thereby has the effect of a sand washing success, reduces the lower sand operation of boring, and shortens construction period, reduces operating cost, improves speed of application and economic benefit.

The accompanying drawing explanation:

Below in conjunction with the drawings and specific embodiments, the utility model is described in more detail.

Fig. 1 is structural representation of the present utility model.

The specific embodiment:

As shown in Figure 1, a kind of sand washing current transformer, comprise main body 1, valve seat 2 and steel ball 5; Have unsteady flow hole 7 on main body 1, valve seat 2 is fixed on main body 1 inwall and blocks unsteady flow hole 7 by cutting off pin 3, and between main body 1 and valve seat 2, by sealed packing 6 sealings, main body 1 lower end connects back taper 4, on the back taper 4 lower end conical surfaces, has high-pressure spray hole 8.

During sand washing, sand cleaning fluid forms the high-pressure injection fluid by high-pressure spray hole 8, break up cementing hard sand, rush to projected depth and drop into steel ball 5, after steel ball 5 falls into valve seat 2, suppress and cut off pin 3, valve seat 2 moves down, fall in back taper 4, open in unsteady flow hole 7, realizes the large discharge capacity circulation of unsteady flow sand return function.

Be understandable that, above about specific descriptions of the present utility model, only for being described, the utility model not is limited to the described technical scheme of the utility model embodiment, those of ordinary skill in the art is to be understood that, still can modify or be equal to replacement the utility model, to reach identical technique effect; Use needs as long as meet, all within protection domain of the present utility model.

Claims

1. a sand washing current transformer, comprise main body (1), valve seat (2) and steel ball (5); It is characterized in that: have unsteady flow hole (7) on main body (1), valve seat (2) is fixed on main body (1) inwall and blocks unsteady flow hole (7) by cutting off pin (3), between main body (1) and valve seat (2), by sealed packing (6), seal, main body (1) lower end connects back taper (4), on the conical surface of back taper (4) lower end, has high-pressure spray hole (8).