CN2599237Y

CN2599237Y - Oil well head powerless type uniform speed chemicals adding device

Info

Publication number: CN2599237Y
Application number: CNU032369816U
Authority: CN
Inventors: 李太朝; 柏红
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-01-30
Filing date: 2003-01-30
Publication date: 2004-01-14
Anticipated expiration: 2013-01-30

Abstract

An oil well head powerless type uniform speed chemicals adding device solves the problems that the flowing speed of chemical liquid of chemicals adding bags varies with the altitude of liquid surface, the cost of chemicals adding pump is high and the repair quantity is big. The utility model is characterized in that: the upper and lower parts of a chemical-chest (1) is respectively provided with valves (3,2) and pipes (10,11), the chemical-chest (1) arranged at one side of a siphon pipe (10) is provided with a view window (12), the upper part of the siphon pipe (10) is welded in the chemical-chest (1) in a shape of semicircle, the lower part of the siphon pipe (10) assumes a right-angle shape, the siphon pipe (10) is provided with valves (4,5), a chemical injection pipe (6) which is communicated with a well head connection pipe (9) is communicated between the valves (4,5), the chemical injection pipe (6) is provided with a chemical injection valve (7), the other end of an air balance pipe (11) is communicated with the well head connection pipe (9) and a balance valve (8) is arranged in the middle. The utility model has the feature that the flowing speed of chemical liquid does not varies with the altitude of liquid surface and has the advantages of good working continuity, convenient and flexible installation and operation, low failure rate and cost.

Description

The well mouth of oil well unpowered type is chemicals dosing plant at the uniform velocity

Technical field:

The utility model relates to oilfield chemical auxiliary equipment, belongs at the uniform velocity chemicals dosing plant of well mouth of oil well unpowered type.

Background technology:

Along with deepening continuously of oil field development, oil well is in oil pipe and the formed ring cavity of sleeve pipe, need to add some chemical agents to guarantee the normal production capacity of oil well, and the well head chemicals dosing plant of Oilfield using has a variety of at present: well head gravity adds cartridge bag, measuring pump chemicals dosing plant or the like, all there is certain defective but it is technical, it is wayward that well head adds cartridge bag dosing amount, the soup flow velocity changes with the variation of liquid level, the addition fluctuation of soup is big, can not realize adjustable, the process of continuous dosing, particularly low to submergence oil well, soup can not be brought into play the effect of drug effect continuously at short notice promptly by extraction, the efficacy of a drug is difficult for giving full play to, and the waste amount of liquid medicine is big; And the measuring pump chemicals dosing plant, though can be good at work playing a role, price height, fault rate height, maintenance load are big and maintenance cost is also high, so the cost of production height.

Summary of the invention:

For overcome the existing soup flow velocity that adds cartridge bag with the variation of liquid level change, the high maintenance capacity of dosing pump cost deficiency greatly, the utility model provides a kind of well mouth of oil well unpowered at the uniform velocity chemicals dosing plant, the soup flow velocity of this chemicals dosing plant does not change with the variation of liquid level, maintenance load is little, and cost of production is low.

Technical solution adopted in the utility model is: the well mouth of oil well unpowered type is chemicals dosing plant at the uniform velocity, comprise medicine-chest, well head adapter, at the top and the bottom of medicine-chest intrinsic valve of difference and pipe, have form on the medicine-chest of syphon one side, siphonal top is half garden shape and is welded in the medicine-chest, its underpart pipe type that meets at right angles, intrinsic thereon two valves and between two valves, be communicated with drug-feeding tube and communicate with the well head adapter, be equipped with into medicine valve on drug-feeding tube, the other end of gas balance pipe communicates with the well head adapter and the centre is equipped with the gas equalizing valve.

The beneficial effects of the utility model are: because this device adopted syphon and flow control valve, have the advantages that the soup flow velocity does not change with the variation of liquid level, the work continuity is good, fitting operation is convenient, flexible, fault rate is low, and maintenance load is little, and cost of production is low.

Description of drawings:

Fig. 1 is a schematic diagram of the present utility model.

1-medicine-chest among Fig. 1, the 2-dosing valve, the 3-atmospheric valve, the 4-flow control valve, the 5-calibrate valve, 6-drug-feeding tube, 7-advance the medicine valve, 8-gas equalizing valve, the 9-well head is taken over, 10-syphon, 11-barometric pipe, 12-form.

The specific embodiment:

Below in conjunction with accompanying drawing will the utility model is described in further detail:

Shown in Fig. 1, the well mouth of oil well dynamical type is chemicals dosing plant at the uniform velocity, comprise medicine-chest 1, well head adapter 9, at the intrinsic atmospheric valve 3 of the top and the bottom of medicine-chest 1 difference, dosing valve 2, syphon 10, gas balance pipe 11 are equipped with atmospheric valve 3 and dosing valve 2 side by side on the top of medicine-chest 1, and atmospheric valve 3 can be got rid of the gas in the medicine-chest 1, guaranteeing that soup is straightway enters medicine-chest 1 from dosing valve 2, and dosing valve 2 is that soup enters valve; Inside left at medicine-chest 1 is that syphon 10, right side are gas balance pipes 11, on medicine-chest 1, have form 12 apart from syphon 10 1 sides, can observe the liquid level change in the medicine-chest 1 at any time, when liquid level reaches the above 15mm of inlet with syphon 10, can in time in medicine-chest 1, add soup; The top of syphon 10 is half garden shape and is welded in the medicine-chest 1, its underpart pipe type that meets at right angles, the inlet of syphon 10 is apart from the bottom 10mm of medicine-chest 1, its top is apart from medicine-chest 1 interior upper wall 10mm, the syphon 10 bottoms type bottom tube that meets at right angles is parallel with the bottom surface of medicine-chest 1, and it is equipped with flow control valve 4 and calibrate valve 5 side by side, and flow control valve 4 is control valves of regulating medicinal liquid flow, need add dose every day as oil well is 2 kilograms, and flow control valve 4 can be 1.4 milliliters of per minutes with Flow-rate adjustment; Calibrate valve 5 is to demarcate the control valve that adds dose, inserts a rubber pipette bulb in calibrate valve 5, guarantees the normal suction of soup when causing loading smooth in the transfusion beginning or because of the impurity obstruction; Being communicated with drug-feeding tube 6 between connection traffic control valve 4 and the calibrate valve 5 communicates with well head adapter 9, can guarantee the unimpeded input of soup, on drug-feeding tube 6, be equipped with into medicine valve 7, guarantee that by advancing medicine valve 7 soup enters in the oil well casing annular chamber from well head adapter 9, guarantees the operate as normal of soup; Intrinsic air pressure balance valve 8 on the barometric pipe 11, the upper end of barometric pipe 11 insert in the medicine-chest 1 and port apart from medicine-chest 1 inwall 10mm, lower port is received well head and is taken on 9, opening air pressure balance valve 8 can guarantee in the sleeve pipe annular chamber to equate the negative pressure appearance during the elimination dosing with air pressure in the medicine-chest 1 by barometric pipe 11.

In real work, at first close air pressure balance valve 8, advance medicine valve 7, open atmospheric valve 3 and dosing valve 2, from dosing valve 2 dosing to medicine-chest 1, constantly can the gas of medicine-chest 1 discharged by atmospheric valve 3 in the dosing, make soup be full of medicine-chest 1, when the soup of medicine-chest 1 reached requirement, the dosing process of medicine-chest 1 finished; Open flow control valve 4 and calibrate valve 5 then, in calibrate valve 5, insert a rubber pipette bulb, soup is sucked syphon 10, enter drug-feeding tube 6 by syphon 10, according to the time with add dose and regulate flow control valve 4 and be the flow of needs, can guarantee that soup enters with the flow velocity of steady and continuous; At this moment can close dosing valve 2, atmospheric valve 3, calibrate valve 5; Open gas equalizing valve 8 and advance medicine valve 7, soup can continuously enter syphon 10 under the effect of liquid level difference, takes over 9 by drug-feeding tube 6 and well head and enters in the ring cavity of oil well casing.

In such scheme, employing be the principle of siphonage because liquid level difference H immobilizes, add the influence that dose is not subjected to dosing tank 1 liquid level change, so can realize at the uniform velocity measuring dosing the problem that the flow velocity that has solved soup changes with the variation of soup face height; This device well head joint adopts snap joint to connect, and can realize being connected with the quick of oil well, and easy for installation, easy and simple to handle, reliable, maintenance load is little, and cost is low, is adapted to various oil well dosings.

Claims

1, a kind of well mouth of oil well unpowered type is chemicals dosing plant at the uniform velocity, comprise medicine-chest (1), well head is taken over (9), it is characterized in that: at the intrinsic valve (3 of the top and the bottom of medicine-chest (1) difference, 2) and the pipe (10,11), have form (12) on the medicine-chest (1) of syphon (10) one sides, the top of syphon (10) is half garden shape and is welded in the medicine-chest (1), its underpart pipe type that meets at right angles, intrinsic thereon valve (4,5) and between valve (4,5), be communicated with drug-feeding tube (6) and well head and take over (9) and communicate, be equipped with into medicine valve (7) on drug-feeding tube (6), the other end of gas balance pipe (11) communicates with well head adapter (9) and the centre is equipped with gas equalizing valve (8).