CN203925420U - The antimagnetic eddy flow draining of Multi-function sand prevention bottom valve - Google Patents

Abstract

The utility model provides the antimagnetic eddy flow draining of Multi-function sand prevention bottom valve, is made up of bleeder, box cupling, bottom valve, and box cupling is that female hollow cylindrical staving is established at two ends; Described bleeder one end is provided with external screw thread, and inside has through hole, and through hole edge is symmetrically arranged with the circular hole of some perforations, one end that bleeder is connected with box cupling, and the inner circular arc depression that forms, other end inside is provided with annular boss; Described bottom valve is that two ends arrange externally threaded cylindrical, hollow staving, described bottom valve one end inwardly forms stepped depression, the other end arranges eddy flow valve, bead adopts antimagnetic material to make, and bead lengthwise movement, apart from minimizing, is effectively sealed, prevent that a large amount of silt from pouring in, by eddy flow, reduce silt and adhere at inwall, sand controlling result is better; Bleeder interior bone edge arranges circular hole, and when bead is moved upward, crude oil and water pass through from the circular hole of concave edges, and this device is convenient to dismounting, rational in infrastructure, is applicable to very much stronger oil recovery scene, magnetic field and promotes the use of.

Description

The antimagnetic eddy flow draining of Multi-function sand prevention bottom valve

Technical field

The utility model relates to field of petroleum exploitation, is specifically related to the antimagnetic eddy flow draining of a kind of Multi-function sand prevention bottom valve in oil recovery process.

Background technology

Oil recovery field, is divided into without pump and recovers the oil and have pump to recover the oil two types, in recovering the oil, oil pipe is set in sleeve pipe without pump, and sucker rod moves back and forth in oil pipe, realizes and recovering the oil.

Be provided with bottom valve in oil pipe bottom, be widely used now a kind of ball valve, basic structure is on cylinder, to have through hole, be arranged on oil pipe bottom, inside is provided with bead, bead can shutoff in through hole, play sealing process, but in the time that ball valve is opened, the distance that bead is altered in oil pipe is unrestricted, causes open and close interval wayward, and liquid measure leakage is larger, also can cause a large amount of silt to enter oil pipe, directly affect oil yield.

Strong containing magnetic field for some oil wells shaft bottom, the situation that causes bottom valve bead normally not use, also often meets at oil recovery scene.

Stopping work or when well workover, pump rod need to being taken out, now in oil pipe, be full of band press liquid in addition, pump rod is difficult for taking out, and be with fuel-displaced come also easy contaminated environment.

There is function singleness in visible existing bottom valve, sand controlling result is bad, and liquid measure leakage is large, not easy to operate, is difficult to meet the defects such as many-sided requirement, and for above-mentioned technological deficiency, applicant improves bottom valve.

Summary of the invention

The purpose of this utility model be to provide a kind of reasonable in design, sand controlling result is remarkable, the antimagnetic eddy flow draining of efficient Multi-function sand prevention easy to use bottom valve.

The technical solution of the utility model is: the antimagnetic eddy flow draining of Multi-function sand prevention bottom valve, formed by bleeder, box cupling, bottom valve, and box cupling is that female hollow cylindrical staving is established at two ends, connects bleeder and bottom valve; Described bleeder is improved pin oil drain, and one end is provided with external screw thread, and inside has through hole, through hole edge is symmetrically arranged with the circular hole of some perforations, one end that bleeder is connected with box cupling, the inner circular arc depression that forms, other end inside is provided with annular boss; Described bottom valve is that two ends arrange externally threaded cylindrical, hollow staving, one end is connected with bleeder by box cupling, one end that described bottom valve is connected with box cupling inwardly forms stepped depression, the other end is provided with eddy flow valve, eddy flow valve is threaded connection into bottom valve inside, as a part for bottom valve, bead moves between bleeder and bottom valve, adopt antimagnetic material to make, its diameter is greater than the internal diameter of bleeder and bottom valve, and be less than box cupling internal diameter, upwards can embed in the circular arc depression of bleeder bottom, to falling in the stepped depression of bottom valve inside.

Described eddy flow valve gos deep into 1/2 to 1/3 place, cylindrical part inside of bottom valve.

Described eddy flow valve size is adjustable, and eddy flow radius can be according to the size adjustment of on-the-spot sand production rate.

Described antimagnetic material is any in stainless steel, copper, nickel.

As known technology, described bleeder is improved pin oil drain, is above provided with draining hole, is provided with draining pin in draining hole, and draining pin gos deep into bleeder interior bone.

Advantage and the good effect that the utlity model has are: the antimagnetic eddy flow draining of this Multi-function sand prevention bottom valve, there is the effect of bleeder and bottom valve simultaneously, link together by box cupling, make bead lengthwise movement in bottom valve apart from minimizing, play effective sealing process, prevent pouring in of a large amount of silts, by the eddy flow valve arranging in bottom valve import department, make the liquid entering form eddy flow, reduce the silt that is attached to bottom valve and box cupling inwall, played significant sand control effect; The circular arc depression of bleeder bottom, when being moved upward, bead can embed wherein, and now crude oil and water pass through from the circular hole of concave edges, bead moves downward, and snaps in the stepped depression in bottom valve, can play sealing process completely, bead adopts antimagnetic material to make, and still can normally use in compare Qiang down-hole, magnetic field, and this device is convenient to dismounting, rational in infrastructure, be applicable to very much stronger oil recovery scene, magnetic field and promote the use of.

Brief description of the drawings

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

Fig. 2 is the upward view of bleeder.

Fig. 3 is the sectional view that does not add the bottom valve of eddy flow valve.

Fig. 4 is the top view of bleeder.

Fig. 5 is the upward view of bottom valve.

In figure:

1, bleeder 2, box cupling 3, bottom valve

4, through hole 5, circular hole 6, circular-arc depression

7, stepped depression 8, boss 9, eddy flow valve

Detailed description of the invention

The utility model provides the antimagnetic eddy flow draining of a kind of Multi-function sand prevention bottom valve, formed by bleeder 1, box cupling 2, bottom valve 3, this device is arranged on oil pipe bottom, assembling from top to bottom, as a part for bottom valve, also have bead to be arranged in box cupling 2, bead selects antimagnetic material to make, and the present embodiment selects stainless steel to make; Box cupling 2, for establishing female hollow cylindrical staving in two ends, connects bleeder 1 and bottom valve 3; Described bleeder 1 is improved pin oil drain, one end is provided with external screw thread, inside has through hole 4, external screw thread one end is threaded with box cupling 2 in bottom, one end that bleeder 1 is connected with box cupling 2, the inner circular arc depression 6 that forms, can observe in conjunction with the top view of Fig. 2, be provided with circular hole 5 and communicate with through hole 4 at circular arc 6 edges that cave in, other end inside is provided with annular boss 8, can observe in conjunction with Fig. 4; In the process that bead presses down at pump rod, can embed in circular arc depression 6, liquid can enter through hole from circular hole 5; Described bottom valve 3 is externally threaded cylindrical, hollow staving for two ends arrange, one end is connected with bleeder 1 by box cupling 2, one end that described bottom valve 3 is connected with box cupling 2 inwardly forms stepped depression 7, visible in Fig. 3, the other end is provided with eddy flow valve 9, and eddy flow valve 9 is threaded connection into bottom valve 3 inside, and bead is in the time declining, can with stepped depression 7 combinations, play the effect of sealing; Bead is located in box cupling 2, motion between bleeder 1 and bottom valve 3, and its diameter is greater than the internal diameter of bleeder 1 and bottom valve 3, and is less than box cupling 2 internal diameters.

The technical program is mainly to make for the problem of existing bottom valve 3, especially for the strong operation field in existing magnetic field, bead in existing bottom valve 3 directly moves in oil pipe, lower limit is bottom valve 3, up without any restriction, make the sealing process of bottom valve 3 limited, be mingled with a large amount of silt, applicant expects using conventional pin oil drain to improve, but existing pin oil drain not be used in without pump and recovers the oil above, and general independent use, after use finishes, directly use instrument is pounded disconnected pin downwards, opens draining hole.Existing pin oil drain inside is just provided with through hole 4 and circular hole 5, and in the time recovering the oil without pump, pump rod can directly move downward and pound disconnected pin, causes this pin oil drain normally to use.

The innovative point of this patent is: the modular design of the setting of boss 8 and bottom valve 3, box cupling 2, bleeder 1 and the setting of eddy flow valve and selecting of antimagnetic material.

The course of work of the present embodiment is: this device is arranged on oil pipe bottom, be together by a threaded connection, play the effect of draining and bottom valve 3, the small ball's diameter is greater than the diameter of bottom valve 3 and bleeder 1, and is less than box cupling 2 diameters, in the time that pump rod presses down, bead is attached in circular arc depression 6, and now crude oil and other liquid can normally flow through by circular hole 5, while carrying on pump rod, bead snaps in stepped depression 7, plays sealing process.

Visible, the move distance of bead has been limited in this device inside,, select again antimagnetic material, make its sealing effect accurately and in time, reduced liquid measure leakage, eddy flow valve 9 is arranged on bottom valve 3 bottom inlet places in addition, and the liquid entering forms eddy flow, reduce silt adhering at this device inwall, played sand control effect, in practice, sand controlling result is remarkable.For the situation of different wells, can also regulate the size of eddy flow valve 9, for the less well of sand production rate, can suitably strengthen the internal diameter of bottom valve 3 interior bone, make eddy flow valve 9 diameters larger, it is large that the liquid measure entering also becomes.

In the time stopping operation, in conjunction with Fig. 4, boss 8 is for being arranged on bleeder 1 inside, the structure rounding, is decreased to the diameter at boss 8 places and is less than pump rod lower end diameter, and be greater than the scope of pump rod upper end diameter, so when in use, pump rod can not enter bleeder 1 inside, smashes pin, after use finishes, cross pump rod, through boss 8, pound disconnected pin with one end of minor diameter, play draining effect.

Above an embodiment of the present utility model is had been described in detail, but described content is only preferred embodiment of the present utility model, can not be considered to for limiting practical range of the present utility model.All equalization variation and improvement etc. of doing according to the utility model application range, within all should still belonging to patent covering scope of the present utility model.

Claims (5)

1. the antimagnetic eddy flow draining of Multi-function sand prevention bottom valve, is characterized in that: formed by bleeder, box cupling, bottom valve,

Box cupling is that female hollow cylindrical staving is established at two ends, connects bleeder and bottom valve;

Described bleeder is improved pin oil drain, and one end is provided with external screw thread, and inside has through hole, through hole edge is symmetrically arranged with the circular hole of some perforations, one end that bleeder is connected with box cupling, the inner circular arc depression that forms, other end inside is provided with annular boss;

Described bottom valve is that two ends arrange externally threaded cylindrical, hollow staving, also comprise bead, described bead adopts antimagnetic material to make, described bottom valve one end is connected with bleeder by box cupling, the other end is provided with eddy flow valve, eddy flow valve is threaded connection into bottom valve inside, and one end that described bottom valve is connected with box cupling inwardly forms stepped depression.

2. the antimagnetic eddy flow draining of Multi-function sand prevention according to claim 1 bottom valve, is characterized in that: described bead moves between bleeder and bottom valve, its diameter is greater than the internal diameter of bleeder and bottom valve, and is less than box cupling internal diameter.

3. according to the antimagnetic eddy flow draining of the Multi-function sand prevention bottom valve described in claim 1 or 2 any one, it is characterized in that: the size of described eddy flow valve is adjustable.

4. according to the antimagnetic eddy flow draining of the Multi-function sand prevention bottom valve described in claim 1 or 2 any one, it is characterized in that: described eddy flow valve gos deep into 1/2 to 1/3 place, bottom valve inside.

5. the antimagnetic eddy flow draining of Multi-function sand prevention according to claim 1 and 2 bottom valve, is characterized in that: described antimagnetic material is any in stainless steel, copper, nickel.