CN2269462Y - Sperator for oil and sand - Google Patents

Abstract

The utility model relates to a novel sperator for the oil and sand, comprising a seamless steel pipe with screw threads on both ends. A guard sheet with sieving holes is respectively fixed on both ends of the through hole particularly. Stainless steel tape yarns are filled between two sieving holes guard sheets. An inclination-shaped snap ring groove is symmetrically arranged on both sides of the seamless steel pipe. The utility model has the advantages of simple structure, low cost, high temperature resistance and high-voltage, good filtering effect, and unease falling for filtering materials. Because the inclination-shaped snap ring groove is increased, the screen pipe is entered and gone out.

Description

Novel oil-sand eliminator

The utility model belongs to oil field down-hole oil production equipment technical field, the oil-sand eliminator that specifically a kind of recover petroleum, natural gas are used.

We know that the sand control problem of oil well, gas well in order to prevent the wear problem of pumping equipment, just must be resolved in the oil field in the process of recover petroleum, natural gas.The professional and technical personnel is in order to address this problem also corresponding a large amount of effort of having done, successively mainly developed and adopted the repressed sintering of metallurgical powder and filter pipe of making and the oil-sand strainer that on seamless steel pipe, is evenly distributed with filter bores, this strainer is to adopt stainless steel wire as filtering material, will put to the seamless steel pipe filter bores behind the stainless steel wire briquet.The former above-mentioned intensity is lower, and application life is short; The latter is because of the pressure height of oil well down-hole, and the time one, long steel wire was easy to be extruded in the filter bores.Therefore two kinds of above-mentioned oil-sand eliminators are also very imperfect.Original in addition annular slot is that straight trough does not have lead angle, and its structure is also unreasonable, and is easily stuck by sand bridge, makes and puies forward difficulty on the sandpipe, screen casing can be broken when serious.

The purpose of this utility model provides the novel oil-sand eliminator of a kind of rational in infrastructure, high temperature high voltage resistant, filtering material difficult drop-off, long service life.

The purpose of this utility model is achieved in that it comprises that even tube wall is distributed with the screwed seamless steel pipe of through hole and two ends, it is characterized in that being set with respectively the catch of a band sieve aperture at the two ends of through hole, between two sieve aperture catch, be filled with by the stainless steel flat filament of random compacting, a symmetrical oblique annular groove respectively is set in the both sides of seamless steel pipe.Above-mentioned through hole is circular port or slotted eye.

The utility model compared with prior art, have simple in structure, cost is low, high temperature high voltage resistant, filtration characteristics such as good, the filtering material difficult drop-off of fruit.And, making that screen casing discrepancy well is smooth owing to increased oblique annular groove, operation is also convenient.

The utility model is described in further detail below in conjunction with accompanying drawing:

Fig. 1 is that structural representation cuts open in a kind of office of the present utility model

Fig. 2 is that structural representation cuts open in another kind of office of the present utility model

Fig. 3 is that the seamless steel pipe of Fig. 1 or Fig. 2 filters the through hole amplification profile

Fig. 4 is that the another kind of seamless steel pipe of Fig. 1 or Fig. 2 filters the through hole amplification profile

Shown in Fig. 1 and 3, concrete structure of the present utility model is: it comprises that even tube wall is distributed with the circular seamless steel pipe 1 that through hole 4 and two ends have external screw thread 2 and internal thread 8 that filters, be set with the catch 5 and 7 of a band sieve aperture respectively at the two ends of manhole 4, wherein the sieve aperture catch 5 of through hole inboard is spacingly (also can weld) in draw-in groove, and catch 7 is welded on the outside of seamless steel pipe through hole.The sieve aperture catch 7 in the through hole outside can be planar shaped (as shown in Figure 3), also can be its outer ring radian and the circular radian of seamless steel pipe consistent (as shown in Figure 4).Between two sieve aperture catch 5 and 7, be filled with by the stainless steel flat filament 6 of random compacting, a symmetrical oblique annular groove 3 respectively is set in the both sides of seamless steel pipe 1.The structure of Fig. 2 is identical with Fig. 1, and just filtering through hole is that slotted eye is logical.Mode of occupation is identical with existing oil-sand strainer.

Claims (3)

1, the novel oil-sand eliminator of down-hole, a kind of oil field use, it comprises that even tube wall is distributed with the screwed seamless steel pipe of through hole and two ends, it is characterized in that being set with respectively the catch of a band sieve aperture at the two ends of through hole, between two sieve aperture catch, be filled with by the stainless steel flat filament of random compacting, a symmetrical oblique annular groove respectively is set in the both sides of seamless steel pipe.

2, oil-sand eliminator according to claim 1 is characterized in that through hole is circle or ellipse hole.

3, oil-sand eliminator according to claim 1 is characterized in that the radian of sieve aperture catch in the through hole outside is consistent with the radian of seamless steel pipe.

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