CN100437040C

CN100437040C - Non-packer silo vortex shedding flowmeter

Info

Publication number: CN100437040C
Application number: CNB2006101511809A
Authority: CN
Inventors: 王长根; 王琳; 张凤辉; 高飞; 高纯良
Original assignee: Daqing Oilfield Co Ltd
Current assignee: Petrochina Co Ltd; Daqing Oilfield Co Ltd
Priority date: 2006-12-21
Filing date: 2006-12-21
Publication date: 2008-11-26
Anticipated expiration: 2026-12-21
Also published as: CN1995925A

Abstract

The invention relates to an oil field injection well separate flow measuring probe. It solves the defect of the original down hole swirl flow meter only being able to work with the measuring of the sealing section, with the device mainly composed of upper centralizer, main block, flow block, swirl sensor, electric wire, circuit board, plug head, bottom centralizer and so on, with the flow block and the swirl sensor on the main block, mainly used for measuring the separate flow of the oil field injection well, having big, accurate measuring data, with long span and inspection period, fine repeatability of the instrument and simple operation.

Description

Non-packer silo vortex shedding flowmeter

Technical field:

The present invention relates to the oilfield test technical field, belong to a kind of water injection well in oil fields stratified flow rate test instrument.

Background technology:

In the heterogeneous body oil field of waterflooding, water injection well laminated distributor under well flow rate test is a very important job.Existing packer silo vortex shedding flowmeter when carrying out zonal injection measurement examination, can only be used with testing seal section, bring a lot of inconvenience to on-the-spot test, and owing to be subjected to the restriction of its rectifying cavity internal diameter, testing range is less, can not satisfy the needs of the big injection well testing of injection rate IR.

Summary of the invention:

The purpose of this invention is to provide a kind of use test seal section that do not need, carry out stratified flow rate test, just the energy follow-on test goes out the non-packer silo vortex shedding flowmeter of each laminar flow amount.This installs no movable member, testing range is big, simple to operate.

The present invention by top connection, on set upright axle, go up centralizer, upper support muscle, main body, casing, bluff body, vortex street sensor, withstand voltage pillar, lower support muscle, O RunddichtringO, cable, set upright axle, wiring board, plug, electromagnetism tube, time centralizer, guide way down and form; Wherein the top connection lower end with on set upright axle upper end and be threaded, last centralizer is enclosed within to be set upright on the axle, on set upright a lower end and upper support muscle upper end and be threaded, upper support muscle lower end is threaded with the main body upper end, on main body, be provided with the vortex street sensor cabin, bluff body and vortex street sensor are welded on the main body, be provided with casing in the main body outside, casing up and down two ends respectively with main body up and down two end in contact be connected, on main body, also be provided with the main body passing channel, preceding rectifying cavity and back rectifying cavity, the main body lower end is threaded with lower support muscle upper end, on the lower support muscle, be provided with passing channel and O RunddichtringO, the upper end of withstand voltage pillar enters the vortex street sensor cabin through the main body passing channel and welds together with vortex street sensor, the lower end of withstand voltage pillar is welded on the upper end of passing channel, lower support muscle lower end with under set upright axle upper end and be threaded, following centralizer is enclosed within down to be set upright on the axle, under set upright an inside and be provided with instrument room, in instrument room, be provided with wiring board and electromagnetism tube, the wiring board lower end is connected with the plug of electromagnetism tube upper end, the cable process passing channel of wiring board upper end and withstand voltage pillar and vortex street sensor link together, and set upright a lower end down and are threaded with the guide way upper end.The upper end of body interior is provided with hyperbolic rectification face, and the shaped design of hyperbolic rectification face is a hyperboloid shape.

The present invention has following advantage:

1, no movable member, the long-time running reliability is higher, long service life;

2, the measurement range ratio is big, can reach 1: 30;

3, measuring accuracy height;

4, the pressure loss is little, and it is little to dam.

Description of drawings:

Fig. 1 is a structural representation sketch of the present invention, and Fig. 2 is a circuit structure sketch of the present invention.

Embodiment:

Referring to Fig. 1, the present invention by top connection 1, on set upright axle 2, go up centralizer 3, upper support muscle 4, main body 6, casing 7, bluff body 9, vortex street sensor 11, withstand voltage pillar 14, lower support muscle 15, O RunddichtringO 16, cable 18, down set upright axle 19, wiring board 20, plug 21, electromagnetism tube 22, centralizer 23, guide way 25 are formed down; Wherein top connection 1 lower end with on set upright the axle 2 upper ends be threaded, last centralizer 3 is enclosed within to be set upright on the axle 2, on set upright the axle 2 lower ends be threaded with upper support muscle 4 upper ends, upper support muscle 4 lower ends are threaded with main body 6 upper ends, on main body 6, be provided with vortex street sensor cabin 8, bluff body 9 and vortex street sensor 11 are welded on the main body 6, be provided with casing 7 in main body 6 outsides, casing about in the of 7 two ends respectively with main body about in the of 6 two end in contact be connected, on main body 6, also be provided with main body passing channel 13, preceding rectifying cavity 10 and back rectifying cavity 12, main body 6 lower ends are threaded with lower support muscle 15 upper ends, on lower support muscle 15, be provided with passing channel 17 and O RunddichtringO 16, the upper end of withstand voltage pillar 14 enters vortex street sensor cabin 8 through main body passing channel 13 and welds together with vortex street sensor 11, the lower end of withstand voltage pillar 14 is welded on the upper end of passing channel 17, lower support muscle 15 lower ends with under set upright the axle 19 upper ends be threaded, following centralizer 23 is enclosed within down to be set upright on the axle 19, under set upright the axle 19 inside be provided with instrument room 24, in instrument room 24, be provided with wiring board 20 and electromagnetism tube 22, wiring board 20 lower ends are connected with the plug 21 of electromagnetism tube 22 upper ends, the cable 18 of wiring board 20 upper ends links together with vortex street sensor 11 through passing channel 17 and withstand voltage pillar 14, sets upright axle 19 lower ends down and is threaded with guide way 25 upper ends.

The upper end of main body 6 inside is provided with hyperbolic rectification face 5, and the shaped design of hyperbolic rectification face 5 is a hyperboloid shape, but the fluid of convection current process produces extruding, effectively reduces flow velocity.

By shown in Figure 2: the circuit on the wiring board 20 of this device is made up of six relatively independent unit, wherein 30 is signal amplification circuit, 31 are shaping amplification and change-over circuit, 32 is the central processing unit circuit, 33 is the clock system circuit, 34 is the USB communicating circuit, and 35 is electronic storage and playback circuitry.

When carrying out stratified flow rate test, last centralizer 3 and following centralizer 23 by non-packer silo vortex shedding flowmeter, make this device occupy the oil pipe center, behind the inner dispensing entry process of the oil pipe upper support muscle 4, when flowing through hyperbolic rectification face 5, hyperbolic rectification face 5 convection cells produce extruding, fluid center high flow velocities is descended, when fluid continues to be downward through bluff body 9 then, on the one hand rate of flow of fluid is further descended, the outer rate of flow of fluid of this device is identical with flowing through, form eddy current on the other hand, rectifying cavity 10 before flowing through is divided and is successively impacted vortex street sensor 11, vortex street sensor 11 converts the mechanical energy of fluid to electric signal and delivers to signal amplification circuit 30 by cable 18 again, finishes amplification, shaping, the number number, storage, playback.After test is finished, get this device from the down-hole, take off electromagnetism tube 22, plug on the electromagnetism tube 22 21 is connected with microcomputer by the USB communication cable, under the control of supporting software on ground, read the test data of storing according to the order of sequence in electronic storage and the playback circuitry 35, carry out subsequent treatment, obtain the test result of flow.

Claims

1, non-packer silo vortex shedding flowmeter is characterized in that: it by top connection (1), on set upright axle (2), go up centralizer (3), upper support muscle (4), main body (6), casing (7), bluff body (9), vortex street sensor (11), withstand voltage pillar (14), lower support muscle (15), O RunddichtringO (16), cable (18), down set upright axle (19), a wiring board (20), plug (21), electromagnetism tube (22), centralizer (23), guide way (25) are formed down; Wherein top connection (1) lower end with on set upright the axle (2) upper end be threaded, last centralizer (3) is enclosed within to be set upright on the axle (2), on be threaded on setting upright axle (2) lower end and upper support muscle (4), upper support muscle (4) lower end is threaded with main body (6) upper end, on main body (6), be provided with vortex street sensor cabin (8), bluff body (9) and vortex street sensor (11) are welded on the main body (6), be provided with casing (7) in main body (6) outside, casing (7) up and down two ends respectively with main body (6) up and down two end in contact be connected, on main body (6), also be provided with main body passing channel (13), preceding rectifying cavity (10) and back rectifying cavity (12), main body (6) lower end is threaded with lower support muscle (15) upper end, on lower support muscle (15), be provided with passing channel (17) and O RunddichtringO (16), the upper end of withstand voltage pillar (14) enters vortex street sensor cabin (8) through main body passing channel (13) and welds together with vortex street sensor (11), the lower end of withstand voltage pillar (14) is welded on the upper end of passing channel (17), lower support muscle (15) lower end with under set upright the axle (19) upper end be threaded, following centralizer (23) is enclosed within down to be set upright on the axle (19), under set upright the axle (19) inside be provided with instrument room (24), in instrument room (24), be provided with wiring board (20) and electromagnetism tube (22), wiring board (20) lower end is connected with the plug (21) of electromagnetism tube (22) upper end, the cable (18) of wiring board (20) upper end links together with vortex street sensor (11) through passing channel (17) and withstand voltage pillar (14), sets upright axle (19) lower end down and is threaded with guide way (25) upper end.

2, non-packer silo vortex shedding flowmeter according to claim 1 is characterized in that the inner upper end of main body (6) is provided with hyperbolic rectification face (5), and the shaped design of hyperbolic rectification face (5) is a hyperboloid shape.