CN205677589U

CN205677589U - A kind of prefabrication type sand screen having skeleton

Info

Publication number: CN205677589U
Application number: CN201620646569.XU
Authority: CN
Inventors: 王树杰; 康昊然; 郭文峰; 张阳
Original assignee: Dongying Sanhe Petroleum Equipment Co Ltd
Current assignee: Dongying Sanhe Petroleum Equipment Co Ltd
Priority date: 2016-06-27
Filing date: 2016-06-27
Publication date: 2016-11-09
Anticipated expiration: 2026-06-27

Abstract

nullA kind of prefabrication type sand screen having skeleton，On、In lower, wire-wrapped screen suit ring is fixed on the two ends of interior wire-wrapped screen，On、Lower outer wire-wrapped screen suit ring is fixed on the two ends of outer wire-wrapped screen，On、Lower isolating ring is placed between two wire-wrapped screen suit rings and integrally welded，Upper isolating ring、Upper outer wire-wrapped screen suit ring、Wire-wrapped screen suit ring in upper、Interior wire-wrapped screen、Outer wire-wrapped screen、Lower outer wire-wrapped screen suit ring、Lower isolating ring、In lower, wire-wrapped screen suit ring puts into filling mould after being assembled integrally，Casting resin sand in mould，Wire-wrapped screen within formation、Outer wire-wrapped screen is the sand screen of skeleton，In base tube is penetrated interior wire-wrapped screen and with，On、In lower, the boxing of wire-wrapped screen suit is connected together，The intensity of sand screen is added in the case of not affecting patency，Sand screen is not easy breakage and dispersion，Service life and voltage endurance capability can be improved，It is greatly increased the effect duration of sand proof well，There is significant economic benefit.

Description

A kind of prefabrication type sand screen having skeleton

Technical field

This utility model is the instrument of oil field wellbore sand, is a kind of prefabrication type sand screen having skeleton.

Background technology

The sand screen of existing a kind of oil field wellbore sand is by the gear of base tube with the resin sand consolidation being sleeved on outside base tube Sandpipe forms, and its sand controlling result is fine, but the limited strength of resin sand consolidation, easy with during wall collisions during going into the well Rupture so that it is sand control measure is unsuccessful, need to take some special measures by its intact lower going-into-well, as well to be scraped, Drifting, well-flushing, make pit shaft unblocked, and these operations can increase activity duration and operating cost.Additionally also to delay when going into the well Enter under Man, must not bore and bring to a halt, although this requirement is simple requirement, but be difficulty with at operation field, because making Industry workman meets anxious emergency and just has the action bored and bring to a halt when operation, so the gear of current resin sand consolidation Sandpipe success rate of going into the well is low.Owing to produce the biggest throttling when well liquid stream crosses the sand retention pipe of resin sand consolidation, resin sand consolidates The inside and outside formation pressure differential of sand retention pipe, again because the consolidation strength of the sand retention pipe of resin sand consolidation is limited, at the work of big pressure reduction With lower easy breakage, so, the service life of this sand screen is short, and the sand control life of oil well is short.

Summary of the invention

The purpose of this utility model is to provide a kind of prefabrication type sand screen having skeleton, the problem overcoming above-mentioned existence, increases Big bearing capacity, during preventing from going into the well and damaged during using, increases the effect duration of sand proof well, improves sand well Economic benefit.

The purpose of this utility model be achieved in that include base tube, upper isolating ring, upper outer wire-wrapped screen suit ring, upper in Wire-wrapped screen suit ring, interior wire-wrapped screen, outer wire-wrapped screen, lower outer wire-wrapped screen suit ring, lower isolating ring, lower interior wire-wrapped screen set Dress ring, base tube has sieve aperture, interior wire-wrapped screen, outer wire-wrapped screen wrapping wire between have gap, upper interior wire-wrapped screen suit ring is solid Being scheduled on the upper end of interior wire-wrapped screen, lower interior wire-wrapped screen suit ring is fixed on the lower end of interior wire-wrapped screen, upper outer wire-wrapped screen set Dress ring is fixed on the upper end of outer wire-wrapped screen, and lower outer wire-wrapped screen suit ring is fixed on the lower end of outer wire-wrapped screen, upper outer wrapping wire Screen casing suit ring, lower outer wire-wrapped screen suit ring external diameter identical and more than the external diameter 2-6mm of outer wire-wrapped screen, upper isolating ring is placed Upper outer wire-wrapped screen suit ring and in wire-wrapped screen suit ring between, lower isolating ring be placed on lower outer wire-wrapped screen suit ring and In down between wire-wrapped screen suit ring, the outer end of upper isolating ring is set with ring with upper outer wire-wrapped screen suit ring, upper interior wire-wrapped screen Upper weld is integral, the outer end of lower isolating ring and lower outer wire-wrapped screen suit ring, the lower weld of lower interior wire-wrapped screen suit ring Integral, upper isolating ring, upper outer wire-wrapped screen suit ring, upper interior wire-wrapped screen suit ring, interior wire-wrapped screen, outer wire-wrapped screen, under Outer wire-wrapped screen suit ring, lower isolating ring, lower interior wire-wrapped screen suit ring put into filling mould, filling mould after being assembled integrally Being divided into Nei Mo and external mold, the internal diameter of external mold is equal with the external diameter of upper outer wire-wrapped screen suit ring, lower outer wire-wrapped screen suit ring, interior The external diameter of mould is equal with the internal diameter of interior wire-wrapped screen, casting resin sand in mould, makes the resin sand of filling fill up the interior of external mold Consolidating behind space between the outer wall of wall and interior mould, within formation, wire-wrapped screen, outer wire-wrapped screen are the sand screen of skeleton, by base Pipe penetrates in interior wire-wrapped screen, make the sieve aperture on base tube be in interior wire-wrapped screen suit ring and lower interior wire-wrapped screen suit ring it Between, the gap of the resin sand that sand-laden fluid stream can only be filled enters in base tube, upper interior wire-wrapped screen suit ring, lower interior wire-wrapped screen Suit ring welds together with base tube.

The beneficial effects of the utility model are: the centre of the sand screen being prefabricated into have within wire-wrapped screen, outer wire-wrapped screen For skeleton, adding the intensity of sand screen in the case of not affecting patency, sand screen is not easy breakage and dispersion, Ke Yiti High service life and voltage endurance capability, be greatly increased the effect duration of sand proof well, has significant economic benefit.

Accompanying drawing explanation

Fig. 1 is the topology view of this utility model embodiment.

Detailed description of the invention

Below in conjunction with Fig. 1, embodiment of the present utility model is illustrated.

Can be known by Fig. 1, embodiment of the present utility model include base tube 1, upper isolating ring 2, upper outer wire-wrapped screen suit ring 3, Wire-wrapped screen suit ring 4 in upper, interior wire-wrapped screen 5, outer wire-wrapped screen 6, lower outer wire-wrapped screen suit ring 7, lower isolating ring 8, lower in Wire-wrapped screen suit ring 9, base tube 1 has sieve aperture, interior wire-wrapped screen 5, outer wire-wrapped screen 6 wrapping wire between have a gap, upper in around Silk sieve tube suit ring 4 is fixed on the upper end of interior wire-wrapped screen 5, and lower interior wire-wrapped screen suit ring 9 is fixed on interior wire-wrapped screen 5 times End, upper outer wire-wrapped screen suit ring 3 is fixed on the upper end of outer wire-wrapped screen 6, and lower outer wire-wrapped screen suit ring 7 is fixed on outer wrapping wire The lower end of screen casing 6, upper outer wire-wrapped screen suit ring 3, lower outer wire-wrapped screen suit ring 7 external diameter identical and more than outer wire-wrapped screen The external diameter 2-6mm of 6 so that it is can form the thick resin sand sand block layer of 2-6mm by the outside of wire-wrapped screen 6 outside, upper isolating ring 2 is placed Upper outer wire-wrapped screen suit ring 3 and in wire-wrapped screen suit ring 4 between, lower isolating ring 8 be placed on lower outer wire-wrapped screen be set with Between ring 7 and lower interior wire-wrapped screen suit ring 9, the outer end of upper isolating ring 2 is set with ring 3, upper interior wire-wrapped screen with upper outer wire-wrapped screen The upper weld of suit ring 4 is integral, the outer end of lower isolating ring 8 and lower outer wire-wrapped screen suit ring 7, lower interior wire-wrapped screen suit ring The lower weld of 9 is integral, and upper isolating ring 2, the effect of lower isolating ring 8 are to make to be formed between interior wire-wrapped screen 5 and outer wire-wrapped screen 6 5- The toroidal cavity of 30mm, in order to consolidate out the thick sand stop ring of 5-30mm, upper isolating ring 2, upper outer wire-wrapped screen suit ring 3, upper in around Silk sieve tube suit ring 4, interior wire-wrapped screen 5, outer wire-wrapped screen 6, lower outer wire-wrapped screen suit ring 7, lower isolating ring 8, lower in around bolting silk Pipe box dress ring 9 puts into filling mould after being assembled integrally, and filling mould is divided into Nei Mo and external mold, the internal diameter of external mold with upper outer around Silk sieve tube suit ring 3, lower outer wire-wrapped screen suit ring 7 external diameter equal, the internal diameter phase of the external diameter of interior mould and interior wire-wrapped screen 5 Deng, casting resin sand in mould, solid after making the resin sand of filling fill up the space between the inwall of external mold and the outer wall of interior mould Knot, within formation, wire-wrapped screen 5, outer wire-wrapped screen 6 are the sand screen of skeleton, are penetrated in interior wire-wrapped screen 5 by base tube 1, make base Sieve aperture on pipe 1 is between interior wire-wrapped screen suit ring 4 and lower interior wire-wrapped screen suit ring 9, and sand-laden fluid stream can only be through filling The gap of the resin sand filled out enters in base tube 1, and upper interior wire-wrapped screen suit ring 4, lower interior wire-wrapped screen suit ring 9 weld with base tube 1 It is connected together.

With in flow string lower going-into-well cylinder during use, the bottom of base tube 1 connects plug, and sand-laden fluid stream can only be from resin sand Gap enters in base tube 1, and sand-laden fluid stream sand grains when the gap of resin sand is blocked, and sand grains will not be pumped down in pump, plays anti- The effect of sand.

Sand block effect, more than the gap of interior wire-wrapped screen 5, can be improved in gap between the wrapping wire of outer wire-wrapped screen 6.

The function of sand block by resin sand in load, therefore, outer wire-wrapped screen 6, interior wire-wrapped screen 5 wire spacing than commonly around The gap of fiber tube is big.

Claims

1. have a prefabrication type sand screen for skeleton, including base tube (1), upper isolating ring (2), upper outer wire-wrapped screen suit ring (3), on Interior wire-wrapped screen suit ring (4), interior wire-wrapped screen (5), outer wire-wrapped screen (6), lower outer wire-wrapped screen suit ring (7), lower isolating ring (8), lower interior wire-wrapped screen suit ring (9), base tube (1) has sieve aperture, interior wire-wrapped screen (5), outer wire-wrapped screen (6) wrapping wire it Between have gap, it is characterized in that: in upper, wire-wrapped screen suit ring (4) is fixed on the upper end of interior wire-wrapped screen (5), lower interior wire-wrapped screen Suit ring (9) is fixed on the lower end of interior wire-wrapped screen (5), and upper outer wire-wrapped screen suit ring (3) is fixed on outer wire-wrapped screen (6) Upper end, lower outer wire-wrapped screen suit ring (7) is fixed on the lower end of outer wire-wrapped screen (6), upper outer wire-wrapped screen suit ring (3), under The external diameter of outer wire-wrapped screen suit ring (7) is identical and more than the external diameter 2-6mm of outer wire-wrapped screen (6), and upper isolating ring (2) is placed on Between outer wire-wrapped screen suit ring (3) and upper interior wire-wrapped screen suit ring (4), lower isolating ring (8) is placed on lower outer wire-wrapped screen set Between dress ring (7) with lower interior wire-wrapped screen suit ring (9), the outer end of upper isolating ring (2) and upper outer wire-wrapped screen be set with ring (3), on The upper weld of interior wire-wrapped screen suit ring (4) is integral, the outer end of lower isolating ring (8) and lower outer wire-wrapped screen suit ring (7), under The lower weld of interior wire-wrapped screen suit ring (9) is integral, upper isolating ring (2), upper outer wire-wrapped screen suit ring (3), upper interior wrapping wire Screen casing suit ring (4), interior wire-wrapped screen (5), outer wire-wrapped screen (6), lower outer wire-wrapped screen suit ring (7), lower isolating ring (8), under Interior wire-wrapped screen suit ring (9) puts into filling mould after being assembled integrally, and filling mould is divided into Nei Mo and external mold, external mold interior Footpath is equal with the external diameter of upper outer wire-wrapped screen suit ring (3), lower outer wire-wrapped screen suit ring (7), the external diameter of interior mould and interior wrapping wire The internal diameter of screen casing (5) is equal, casting resin sand in mould, makes the resin sand of filling fill up the inwall of external mold and the outer wall of interior mould Between space after consolidate, within formation, wire-wrapped screen (5), outer wire-wrapped screen (6) are the sand screen of skeleton, are worn by base tube (1) Enter in interior wire-wrapped screen (5), make the sieve aperture on base tube (1) be in interior wire-wrapped screen suit ring (4) and lower interior wire-wrapped screen set Between dress ring (9), the gap of the resin sand that sand-laden fluid stream can only be filled enters in base tube (1), upper interior wire-wrapped screen suit ring (4), lower interior wire-wrapped screen suit ring (9) welds together with base tube (1).