CN201182980Y

CN201182980Y - Acidulation substance mixing agitator

Info

Publication number: CN201182980Y
Application number: CNU200820065297XU
Authority: CN
Inventors: 乔春; 秦斌; 刘文骋; 伊进
Original assignee: SJ Petroleum Machinery Co
Current assignee: SJ Petroleum Machinery Co
Priority date: 2008-01-10
Filing date: 2008-01-10
Publication date: 2009-01-21
Anticipated expiration: 2018-01-10

Abstract

The utility model relates to an acidulation substance mixing and agitating device, which belongs to the field of the fracturing sand blending equipment in oil fields. The acidulation substance mixing and agitating device comprises a tank body, an agitator, a suction pipe, a liquor inlet and a mixed liquor outlet. The acidulation substance mixing and agitating device is characterized in that the tank body is provided with a sealing tank cap which is sealed with the tank body and provided with a funnel-shaped sand inlet and an inlet for dry powder additive and liquid additive, the tank cap is connected with a fog clearing device through an acid fog discharging bent pipe, a foam eliminating device is arranged on the shaft of the agitator at the inner side of the tank cap, a liquid collecting manifold is arranged at the outer side of the tank body, and the manifold is positioned at a height specified by the liquid level of the mixture and connected with a liquid collecting main pipe; the tank body and the parts contacted with acid liquor are made of anticorrosive material or subject to the anticorrosion treatment, and as a further improvement, a plurality of separating plate meshes are arranged in the tank body. The acidulation substance mixing and agitating device solves the technical difficulty that the prior mixing tanks lack of functions of acid protection and corrosion resistance, the overflow of the acid liquor and acid fog can be effectively prevented, the harm to the operating personnel and the pollution to the working environment due to the overflow of the acidic mixed liquor can be avoided, the acid resistant performance is improved, the service life of the equipment is prolonged, and the security of fracturing and acidizing treatment can be guaranteed.

Description

Mixed stirring device of acidizing substance

Affiliated technical field:

The utility model relates to the mixed stirring device of oil-gas field fracturing sand blender.

Background technology:

Fracturing work is the major measure of oilfield stimulation.Development along with the oil field compression fracture technology, significantly effect of increasing production had been made already in the acidifying sand fracturing, by in the blending tank of sand blender, add 20% concentrated hydrochloric acid and sulfuric acid solution with jar in blending agent mixes afterwards the injection oil well and realizes, but acid solution can produce a large amount of foam, acid mist in suction, mixture stirring, discharge process, foam, acid mist and mixed liquor overflow the threat operator safety, cause the damage and the environmental pollution of equipment.The applicant mixes tank arrangement in the vertical two-chamber of patent of application on December 18th, 1996, the patent No. is ZL96239886.1, its blending tank is barrel-shaped evolution formula structure, mainly constitute by tank body, mixing agitator, suction discharge pipe etc., the easy sand setting of blending tank, sand have been solved than little problem, but do not have acid-proof, froth breaking, anti-overflow, corrosion-resistant function, can not be used to add 20% the concentrated hydrochloric acid and the mixing of sulfuric acid solution and stir operation, need exploitation a kind of can with the supporting mixed stirring device of acidizing substance of acidifying sand fracturing operation technique.

Summary of the invention:

The purpose of this utility model is: a kind of mixed stirring device of acidizing substance is provided, possess that effective seal, anti-overflow, fog dispersal, froth breaking, acid mist are handled, anticorrosive function, the injury that causes personnel of avoiding acidic mixture in whipping process, to overflow, the damage of equipment and the pollution of environment.

The utility model is to realize above-mentioned purpose by following technical solution:

Mixed stirring device of acidizing substance comprises tank body, agitator, suction line, inlet, mixture export, it is characterized in that: tank body is provided with the sealed tank cap with tank body band funnel-form sand inlet and dry powder additive, liquid additive inlet, discharging bend pipe by acid mist on cover links with the fog dispersal device, on the axle of the inboard agitator of cover, be provided with bubble elimination device, the liquid collecting manifold that the tank body outside is provided with, manifold links with the height and position that allows with the mixture liquid level and with the manifold; Described defoaming device is enclosed within on the axle of agitator, is made of the pipe that has a plurality of apertures that intersects, and pipe links with a jar outer water inlet; Described fog dispersal device comprises blower fan and acid mist neutralizing tank, acid mist is discharged bend pipe one end and cover links, the other end connects the suction inlet of blower fan, link by bend pipe between the outlet of blower fan and the acid mist neutralizing tank, be provided with interlayer in the acid mist neutralizing tank, in lower floor's tank body alkaline solution is housed, the bend pipe that connects blower fan and acid mist neutralizing tank from the tank deck that seals extends to alkaline solution in lower floor's tank body, end bending at the bottom of the jar; Described cover is provided with the peep hole that transparent material is made, and seals with cover; Tank body and the parts that contact with acid solution adopt resistant material to make; As further improvement, be provided with a plurality of dividing plate nets in the tank body, between double-deck stirring vane, resistant material is adopted on tank body and the surface that contacts with acid solution.

During acidizing treatment, contain 20% hydrochloric acid and sulfate radical acid solution by what suction pump was carried, along the circumferential direction enter the central stirring pool of blending tank by the skin of jar by suction inlet, solid mixture sand and dry powder enter the jar from the funnel-form suction inlet of jar, and acid solution is mixed the stirring back with dry powder, liquid additive and sand and discharged by outlet in stirring pool.In whipping process, defoaming device penetrates band on the liquid level top of mixture and presses water spray, break up, eliminate surfactant foam, guarantee that liquid level automatic control device can accurately detect mixture liquid level signal, and according to the liquid level situation of change, regulation and control feed liquor amount, when the acidic mixture liquid level had surpassed the control height, acid solution overflowed into jar collector tube in the outside; Mixed stirring device of acidizing substance is in when work, blower fan with the acid mist in the jar be evacuated in the acid mist neutralizing tank with jar in alkaline solution be neutralized into harmless salting liquid, eliminated the corrosivity of acid mist.After operation is finished, discharge the liquid in the acid mist neutralizing tank; Open blending tank bottom tapping butterfly valve, the acidic mixture of remnants is entered in the special-purpose liquid storage container, avoid environment damage.

Beneficial effect compared with prior art:

1. mixed stirring device of acidizing substance tank body and cover sealing, sand inlet are that funnel-shaped structure reduces a large amount of volatilizations of acid mist and causes to the pollution of working environment and to personnel's injury.

2. in the tank body defoaming device is set, the band of generation presses water spray in time to eliminate a large amount of foams that produce in the whipping process, makes fluid level control device accurately detect liquid level, prevents that acidic mixture from overflowing.

3. the acid mist that produces when acid fog removing device mixes acidulants sucks in the acid mist neutralizing tank by blower fan and neutralizes with alkaline solution, eliminates the harm of acid mist.

4. be pooled to by the acid-proof sebific duct when acid solution is too much in a plurality of collector tubes of tank body arranged outside, blending tank and prevent among the manifold that the strong acid mixed liquor from not overflowing, guarantee not cause in the work progress to the infringement of equipment with to the pollution of environment.

5. tank body is provided with the large tracts of land peep hole, can observe the mixing stirring state of mixed liquor in the work progress at any time.

6. the tank body that contacts with acid solution of acidifying mixed stirring device and relevant surfaces thereof adopt resistant material, have guaranteed the service life of agitating device.

7. be provided with a plurality of dividing plate nets in the tank body, the long-pending group that the sand in the mixture produces in mixed liquor breaks up the sand group of rotation fast by the dividing plate net, reaches and stirs more effect of uniform.

Description of drawings:

Fig. 1 is the mixed stirring device of acidizing substance front view;

Fig. 2 is the mixed stirring device of acidizing substance vertical view;

Fig. 3 is a mixed stirring device of acidizing substance tank body front view;

Fig. 4 is an acidulants blending tank tank body left view;

Fig. 5 is an acidulants blending tank A-A cutaway view;

The specific embodiment:

Referring to Fig. 1, Fig. 2, mixed stirring device of acidizing substance comprises tank body and fog dispersal device, the outside of tank body 1 is provided with acid solution suction line 3, feed tube 9, discharge pipe 5, agitator 6 is positioned at the center of tank body 1, fluid motor 14 is equipped with in the axle upper end, above tank body 1, be provided with sealed tank cap 15, ultrasonic wave liquid level control device interface 17 is housed on the cover 15, infundibulate sand inlet 11, liquid additive inlet 18, dry powder additive inlet 20, defoaming device 2 water inlets 22, cover 15 is provided with the

peep hole

10 and 12 that transparent tempering acid-resistant glass is made, cover 15 and tank body 1 sealing; Fog dispersal device one end links by acid mist discharge pipe 13 and cover 15, the other end connects blower fan 24, link by bend pipe 25 between blower fan air exit and the acid mist neutralizing tank 23, described acid mist neutralizing tank 23 middle parts are provided with an interlayer, bend pipe 25 extends to the alkaline solution of lower floor's tank body from the tank deck of sealing, end bending at the bottom of the jar.Referring to Fig. 3 and shown in Figure 4, axle top at cover 15 inboard agitators 6 is set with bubble elimination device 2, at the bottom of jar, be provided with bleeder valve 7, double-deck stirring vane 16 is equipped with in 6 lower ends of agitator, 6 upper ends of agitator are passed cover 15 and are linked with fluid motor 14,4 fast dividing plate nets 4 are equipped with in tank body 1 inboard, be provided with the pipe joint of four acid solution suction manifolds 3 in the edge, top of tank body 1, one circle baffle plate 19 is arranged at the top of tank body, there is the pipe joint of four suction lines 8 in the baffle plate outside, be pooled among the manifold by the acid-proof sebific duct, the strong acid mixed liquor is not overflowed; 4 dividing plate nets 4 of tank body 1 inner face dress are equipped with an illuminating lamp 25 near the form hole 10 of tank top, guaranteeing has light in the hermetically sealed can, and 12 places can be observed into sand and stirring state in the form hole.Referring to Fig. 5, described defoaming device 2 is made of the pipe that has a plurality of apertures 21 that intersects, and pipe links with a jar outer water inlet 22, interlaced 45 degree of described aperture, diameter 1-1.5mm; Adopt resistant material 00Cr18Ni14Mo2 or process preservative treatment with the tank body and the relevant parts of acid medium contact, seal adopts acidproof neoprene or nitrile rubber material to make.Whole device can be installed on the car of chassis, also can be installed on the sledge seat.

During mixed stirring device of acidizing substance work, the pad of frac of being carried by inlet 9 enters in the tank body 1 along the tangential direction of tank body, sand is vertically entered in the blending tank 1 by the infundibulate sand inlet 11 of tank top simultaneously, fully mix with chemical liquid additive, 20 dry powder additives of carrying that enter the mouth that liquid additive inlet 18 is carried, form a kind of mixed liquor of suspension.In whipping process, can produce a large amount of foams, defoaming device 2 penetrates water spray with pressure on the liquid level top of jar, breaks up foam, guarantees that fluid level control device can accurately detect the liquid level signal, makes liquid level controlled not excessive.Owing to advance sand in a large number, sand can long-pending group in mixed liquor in the whipping process, and 4 dividing plate nets 4 of tank body 1 inner face dress can be broken up the sand of rotation fast, sand, liquid and glue crosslinking agent can be molten fully and, reach the effect that stirs; The acid mist that produces in the stirring sucks in the acid mist neutralizing tank and the alkali lye neutralisation treatment through blower fan; After operation is finished, handle neutralizer, open the tapping butterfly valve 7 that is located at jar 1 bottom, in the container that sand liquid input remaining at the bottom of the jar is special-purpose, guarantee entire job process harmless to personnel, equipment and environment.

Claims

1. mixed stirring device of acidizing substance, comprise tank body, agitator, acid solution suction line, inlet, mixture export, it is characterized in that: tank body is provided with the sealed tank cap with tank body band funnel-form sand inlet and dry powder additive, liquid additive inlet, cover is discharged bend pipe by acid mist and is linked with the fog dispersal device, on the axle of the inboard agitator of cover, be provided with bubble elimination device, the liquid collecting manifold that the tank body outside is provided with, manifold are positioned at the height of mixture liquid level setting and with the manifold and link.

2. mixed stirring device of acidizing substance according to claim 1 is characterized in that described defoaming device is enclosed within on the axle of agitator, is made of the pipe that has a plurality of apertures that intersects, and pipe links with a jar outer water inlet.

3. mixed stirring device of acidizing substance according to claim 2 is characterized in that interlaced 45 degree of described aperture, diameter 1-1.5mm.

4. mixed stirring device of acidizing substance according to claim 1 and 2, it is characterized in that: described fog dispersal device comprises blower fan and acid mist neutralizing tank, acid mist is discharged bend pipe one end and cover links, the other end connects the suction inlet of blower fan, link by bend pipe between the outlet of blower fan and the acid mist neutralizing tank, be provided with interlayer in the acid mist neutralizing tank, in lower floor's tank body alkaline solution is housed, the bend pipe that connects blower fan and acid mist neutralizing tank from the tank deck that seals extends to alkaline solution in lower floor's tank body, end bending at the bottom of the jar.

5. mixed stirring device of acidizing substance according to claim 4 is characterized in that described cover is provided with the peep hole that transparent material is made, and seals with cover.

6. mixed stirring device of acidizing substance according to claim 4 is characterized in that being distributed with in the tank body a plurality of dividing plate nets.

7. mixed stirring device of acidizing substance according to claim 4 is characterized in that the acidifying tank body reaches the parts that contact with acid solution and adopts resistant material to make.