CN214063271U

CN214063271U - Novel sand filtering device under oil well pump

Info

Publication number: CN214063271U
Application number: CN202022717400.8U
Authority: CN
Inventors: 季会军
Original assignee: Daan Hongyuan Pipe Co ltd
Current assignee: Daan Hongyuan Pipe Co ltd
Priority date: 2020-11-23
Filing date: 2020-11-23
Publication date: 2021-08-27
Anticipated expiration: 2030-11-23

Abstract

The utility model provides a novel sand filtering device under oil pump, including center tube, suit stainless steel plate net outside the center tube, fixed connection be used for sealing the head of center tube at the center tube other end at the string cap, the fixed connection of center tube one end, set up the oilhole on the center tube, stainless steel plate net both ends are fixed on the center tube, set up the sand filtering hole on the stainless steel plate net, the string cap is equipped with the boss for the tubulose tip, the boss of string cap is used for the whole card of sand filtering device to hang in the tail pipe when the tail pipe end, and the boss outside of string cap is used for blocking in the middle of two oil pipe coupling inboardly to fix the sand filtering device, and the sand filtering hole can set up the size as required to sand filtering can all be simultaneously in whole center tube side, improved the precision and the sand filtering efficiency of sand.

Description

Novel sand filtering device under oil well pump

Technical Field

The utility model relates to a petroleum machinery's instrument in the pit especially relates to a novel sand filter under oil-well pump device.

Background

At present, the oil well pump sand control still is the important problem in the oil recovery production process, and current sand control instrument is still not ideal enough to current sand control instrument sand control valve, its theory of operation is that the gravel in the fluid falls into in storing up the sand space by the dead weight, but some less gravels still enter into the oil well pump along with the oil stream, and the sand filtering precision and the sand filtering are inefficient.

SUMMERY OF THE UTILITY MODEL

The utility model aims at designing a sand filtering device improves sand filtering precision and sand filtering efficiency.

For realizing the utility model discloses the mesh, the utility model provides a novel sand filtering device under oil pump, a serial communication port, including center tube, suit at the stainless steel plate net of center tube outside, fixed connection at the nut, the fixed connection of center tube one end be used for sealing the head of center tube at the center tube other end, set up the oilhole on the center tube, the stainless steel plate net both ends are fixed on the center tube, set up the sand filtering hole on the stainless steel plate net, the nut is equipped with the boss for the tubulose tip, the boss of nut is used for the sand filtering device whole to hang the card when among the tail pipe at the tail pipe tip, and the boss outside of nut is used for blocking the inboard sand filtering device that fixes of oil pipe coupling in the middle of two oil pipes, and the sand filtering hole can set up the size as required to sand can all be filtered simultaneously in whole center tube side, improved the precision and the sand filtering efficiency of sand.

The stainless steel plate nets are multiple, the two stainless steel plate nets are fixed on the central pipe through the connecting hoops, the length of the central pipe is long, the stainless steel plate nets are multiple, the middle of each stainless steel plate net is fixed in a segmented mode, and the stainless steel plate nets can be prevented from deforming.

The outer wall of the hanging cap is provided with an annular groove, the annular groove is used for placing a sealing ring, a gap between the hanging cap and the tail pipe is sealed, and sand grains are prevented from entering the oil pipe through the gap.

The hanging cap, the end socket of the connecting hoop connected with the central pipe are provided with steps, the stainless steel plate net sleeved outside the central pipe is inserted into a gap between the steps and the central pipe during assembly, the stainless steel plate net is not damaged, and the stainless steel plate net is convenient to clean and then use continuously.

The utility model has the advantages that: use this novel sand filtering device under oil pump, the sand filtering hole can be adjusted according to the sand filtering precision on the corrosion resistant plate net, can improve the sand filtering precision, prevents during the finer gravel in the fluid enters into the oil-well pump, can reduce the wearing and tearing of oil-well pump plunger by a wide margin, reduces the oil-well pump maintenance frequency, in addition the utility model discloses sand filtering device, filter area is big, can improve filtration efficiency.

Drawings

FIG. 1 is a schematic structural view of a sand filtering device of the present invention;

FIG. 2 is a schematic view of the sand screen assembly assembled with a tailpipe.

Wherein: 1-hanging cap, 2-annular groove, 3-stainless steel plate net, 4-central tube, 5-connecting hoop, 6-end socket, 7-tail tube, 8-tubing coupling and 9-oil passing hole

Detailed Description

Referring to fig. 1, the embodiment of the present invention provides a novel sand filtering device under an oil well pump, comprising a central tube 4, a stainless steel plate mesh 3 sleeved outside the central tube 4, a hanging cap 1 fixedly connected to one end of the central tube 4, and a sealing head 6 fixedly connected to the other end of the central tube 4 for sealing the central tube 4, wherein an oil hole 9 is arranged on the central tube 4, two ends of the stainless steel plate mesh 3 are fixed on the central tube 4, a sand filtering hole is arranged on the stainless steel plate mesh 3, the hanging cap 1 is a tubular end part provided with a boss, the boss of the hanging cap 1 is clamped at the end part of a tail tube 7 when the sand filtering device is integrally hung in the tail tube 7, the outer side of the boss of the hanging cap 1 is used for clamping at the inner side of a tubing coupling 8 between two tubing to fix the sand filtering device, the sand filtering hole can be set in size according to needs, and the sand can be filtered simultaneously on the side surface of the whole central pipe, so that the sand filtering precision and the sand filtering efficiency are improved.

Stainless steel plate net 3 has a plurality ofly, fixes on center tube 4 through connecting hoop 5 between two stainless steel plate nets, and center tube 4 length is longer, and stainless steel plate net sets up to a plurality ofly, and the middle segmentation is fixed, can prevent that stainless steel plate net from warping.

The outer wall of the hanging cap 1 is provided with an annular groove 2, the annular groove is used for placing a sealing ring, a gap between the hanging cap 1 and the tail pipe 7 is sealed, and sand grains are prevented from entering an oil pipe through the gap. The end of the hanging cap 1, the end socket 6, the connecting hoop 5 and the central pipe 4 are provided with steps, the stainless steel plate net 3 sleeved outside the central pipe 4 is inserted into a gap between the steps and the central pipe during assembly, the stainless steel plate net is not damaged, and the stainless steel plate net is convenient to clean and then use continuously.

The utility model discloses among the tail pipe under the oil-well pump was installed to sand filter under the oil-well pump, fluid must be earlier throughThe stainless steel plate net can enter the central tube after filtering, and the size of the sand filtering holes of the stainless steel plate net can be adjusted, so that the sand filtering precision can reach 0.2mm through tests, and the filtering area can reach 0.012m²The sand filtering precision and the sand filtering efficiency are both greatly improved, and the current maximum overflowing area of the oil well pump during working is about 0.002m²The sand filter device is arranged under the oil well pump and can not influence the normal work of the oil well pump.

Claims

1. The utility model provides a novel sand filtering device under oil pump, its characterized in that, including center tube (4), suit stainless steel plate net (3) outside center tube (4), fixed connection at hanging cap (1), the fixed connection of center tube (4) one end be used for sealing head (6) of center tube (4) at the center tube (4) other end, set up oilhole (9) on center tube (4), stainless steel plate net (3) both ends are fixed on center tube (4), set up the sand filtering hole on stainless steel plate net (3), it is equipped with the boss for the tubulose tip to hang cap (1), the boss of hanging cap (1) is used for the sand filtering device whole to hang and blocks when hanging among tail pipe (7) tip, and the boss outside of hanging cap (1) is used for blocking in the inboard fixed sand filtering device of two oil pipe middle oil pipe coupling (8).

2. The novel sand filtering device under the oil well pump as claimed in claim 1, is characterized in that: the stainless steel plate nets (3) are multiple, and the two stainless steel plate nets (3) are fixed on the central pipe (4) through connecting hoops (5).

3. The novel sand filtering device under the oil well pump as claimed in claim 1, is characterized in that: the outer wall of the hanging cap (1) is provided with an annular groove (2) which is used for placing a sealing ring to seal a gap between the hanging cap (1) and the tail pipe (7).

4. The novel sand filtering device under the oil well pump as claimed in claim 2, characterized in that: the end of the hanging cap (1), the end socket (6), the connecting hoop (5) and the central pipe (4) are provided with steps, and the stainless steel plate net (3) sleeved outside the central pipe is inserted into a gap between the steps and the central pipe (4) during assembly.