CN208260574U - A kind of fracturing base fluid mixer - Google Patents

A kind of fracturing base fluid mixer Download PDF

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Publication number
CN208260574U
CN208260574U CN201820470818.3U CN201820470818U CN208260574U CN 208260574 U CN208260574 U CN 208260574U CN 201820470818 U CN201820470818 U CN 201820470818U CN 208260574 U CN208260574 U CN 208260574U
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China
Prior art keywords
base fluid
fracturing
feed inlet
connector
mixer
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CN201820470818.3U
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Chinese (zh)
Inventor
仲跻风
王继鑫
吴义朋
李先策
李心成
刘士堂
杜明强
毛明朝
张坤
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Yantai Jereh Petroleum Equipment and Technologies Co Ltd
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Yantai Jereh Petroleum Equipment and Technologies Co Ltd
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Abstract

The utility model relates to pigment mixing or liquid mixing equipment technical fields in oil gas field construction operation, specifically, a kind of fracturing base fluid mixer when being oil field fracturing site operation, including swirl-flow premixed device, swirl-flow premixed device includes inlet, feed inlet, connector and annular space, feed inlet is vertically arranged, inlet is horizontally disposed, the side wall and sleeve connection of feed inlet, the inside of sleeve is arranged in connector, the side wall of connector and feed inlet forms annular space, annular space is connected to inlet, the side wall lower ends portion of feed inlet has bevel edge, the top of connector has inclined-plane, inclined-plane and bevel edge have certain angle with vertical plane, angle is 10~80 degree, the lower part of feed inlet sets gradually necking down, trunnion and diffuser.Demand when can satisfy the extensive operation in fracturing work scene to fracturing base fluid further promotes mixed mixing efficiency and promotes the mixing quality of guanidine glue, realizes best Energy Efficiency Ratio.

Description

A kind of fracturing base fluid mixer
Technical field
The utility model relates to pigment mixing or liquid mixing equipment technical fields in oil gas field construction operation, specifically It says, fracturing base fluid mixer when being a kind of oil field fracturing site operation.
Background technique
Oil, gas well are in formation testing or production process, and since there is pollution near wellbore zone, (drilling well cements the well, washes Well Killing Process and all can Pollute) or the low reason of stratum original permeability to will cause oil, gas well yield lower, and this problem can pass through pressure break Technology solves.
Fracturing technique refers in oil recovery or gas production process, is acted on using fluid pressure, and the reservoir of oil, gas is made to form crack A kind of method, concrete operations are the pumps using high-pressure large-displacement, using the principle of liquid pressure transmission, by the liquid with certain viscosity Body (i.e. fracturing fluid) is injected to reservoir with being greater than the pressure of absorbability of reservoir, and then forms tool near the shaft bottom in stratum There is the sand packed fracture of certain geometric dimension and high flow conductivity, well is made to achieve the purpose that increasing yield and injection.
In the prior art, fracturing fluid is that mixture forms in blending device by guanidine rubber powder and base fluid, and blending device includes Feed inlet, inlet (base fluid is generally water, so also referred to as water inlet) and outlet, middle charging aperture are what guanidine rubber powder entered Channel, inlet is the channel that base fluid enters, after guanidine rubber powder and base fluid enter the blending device of single form simultaneously, in mixture It is mixed in the inner cavity of device, after the completion of mixing, obtained fracturing fluid is discharged from outlet.
But fracturing fluid made of blending device mixture using the above structure, often occur mixing non-uniform phenomenon, So that fracturing fluid often has powder agglomeration phenomenon (being commonly called as flake), these agglomerations not only reduce the permeability of fracturing fluid, And the viscosity of fracturing fluid is also reduced, seriously affect the frac treatment effect of oil, gas well.
Therefore, the mixed quality of fracturing fluid how is improved, the frac treatment effect of oil, gas well is improved, is current this field Technical staff's urgent problem to be solved.
Chinese patent CN203899476U discloses a kind of blending device of the fracturing fluid of complex form comprising loads in mixture in advance The venturi-type eductors for setting and being arranged in pre-mixing apparatus bottom are mixed twice compared with the fracturing fluid that traditional mixed once is formed It is more uniform to close obtained fracturing fluid, reduces the occurrence probability of powder agglomeration phenomenon, enhances the permeability of fracturing fluid, and Also improve the viscosity of fracturing fluid.But the eddy flow that is formed of the pre-mixing apparatus is in speed and to flow to direction unsatisfactory, when use Flow velocity is slower, and eddy flow is sufficiently complete, cannot reach optimum state, and certain special operation conditions, the inlet requirement for gas It is very high, and how to be rapidly achieved uniform effect is also a problem.
Summary of the invention
The deficiency of the utility model in order to overcome the above technical problems provides a kind of fracturing base fluid mixer, mixing effect Rate is high, and is satisfied with the demand of various operating conditions, reduces the waste of raw material, generates considerable economic benefit.
The technical solution for solving above-mentioned technical problem is as follows:
Scheme one, a kind of fracturing base fluid mixer, including swirl-flow premixed device, the swirl-flow premixed device includes feed liquor Mouth, feed inlet, connector and annular space, the feed inlet are vertically arranged, and the inlet is horizontally disposed, the feed inlet Side wall and sleeve connection, the connector is arranged in the inside of sleeve, and the side wall of the connector and feed inlet is formed Annular space, the annular space are connected to inlet, and the side wall lower ends portion of the feed inlet has a bevel edge, the connector it is upper Portion has inclined-plane, and the inclined-plane and bevel edge have certain angle with vertical plane, and angle is 10~80 degree, inclined-plane and bevel edge As long as guaranteeing respectively and the angle of vertical plane being in 10~80 degree, preferably inclined-plane and bevel edge is arranged in parallel, in this way, inclined-plane Annular inclined slot is formed between bevel edge, and the annular inclined slot can according to need carry out angular adjustment, it is main to rise To guide functions.Demand is premixed according to practical, guiding device can also be internally provided in the gap.Under the feed inlet Portion, the i.e. downstream of annular space, set gradually necking down, trunnion and diffuser.The pre-mixing apparatus, compared to common pre-mixing apparatus and patent The pre-mixing apparatus of CN203899476U has following substantial advantage: the pipeline configuration of movement-less part passes through circulation from bottom to top Channel, eddy flow is more stable under usual facilities, and the shape of eddy flow is more complete;The high speed moisture film formed from annular space is more Uniformly;And flow and speed can be adjusted by adjusting gap, so that different dry powder additives are better adapted to, it is specific to adjust Mode two parts can be allow to relatively move by thread forms.When powder and water contact, the speed and flow of water flow When having very important effect, for example needing to add a large amount of guanidine rubber powder material, if be added in static water, guanidine rubber powder can be at Group, is commonly called as water packet powder, if guanidine rubber powder is added in the faster water of water velocity, such as in laboratory blender beaker, guanidine rubber powder It can preferably be mixed with water, so mixed effect will be generated by forming the raising of complete eddy flow and water velocity Very positive effect, this programme make that rotary water current is more stable, flow velocity is higher, thus to powder by changing the path of water flow Mixing with water generates very big improvement.
Scheme two further includes and the concatenated high-pressure injection mixer of swirl-flow premixed device, the high-pressure injection mixer For any one of fixed flow discharge type or variable-flow type.Compared to the mixer of common individually high-pressure injection, swirl-flow premixed device can be with Powder group is broken up well, is effectively prevented from the generation of water packet powder, plays stirring shear action well;And rotary water current shape At moisture film, can play the role of reduce air enter;Cleaning inner wall of the pipe can also be played by adjusting rotary water current Effect, especially at the position that pigment combine.
Scheme three further includes and the concatenated shearing-type mixer of swirl-flow premixed device.Shearing-type mixer, which generally comprises, to be turned Son and stator, for shape similar to water pump, rotor is the finned blade wheel structure of special designing, and stator is then usually lattice-shaped structure And the gap of grid is smaller, and the gap between stator and rotor is smaller, can be into one compared to scheme two using shearing-type mixer Step reduces the entrance of air, and shear pump is mutually moved in stator and rotor in the running, small compared to injector generation negative pressure, even There is no negative pressure generation, is especially suitable for the mixing of anaerobic chemical product, such as polyacrylamide solution;It shears between pump stator and rotor Gap it is smaller, usually even more small in 0.5mm, fluid when gap between them by that can be sufficiently sheared, to play Uniformly mixed effect, it can be ensured that liquid and powder are sufficiently mixed;The addition of pre-mixing apparatus can be played such as scheme two In positive effect.
Scheme four is that scheme two is connected with scheme three or scheme three is connected with scheme three.The advantage of the program exists In can sequentially add two or more powders, and achieve the purpose that quickly to mix.
Scheme five is that scheme two and shearing series connection of pumps or scheme three are connected with shear pump.It in this way can be in scheme The upper further enhancing mixed effect in two bases, requires relatively high situation particularly with mixing, is applicable in very much.
Scheme six is that scheme two is in parallel with scheme three, can be in parallel two or more.Two kinds can be mixed compared to existing scheme Or a variety of powders of different nature, such as shearing-crushing material and common guanidine rubber powder need while the case where mix.
Scheme seven is that the perhaps scheme three in parallel with scheme two of scheme two is in parallel with scheme three can parallel connection two or more It is a.
The beneficial effects of the utility model are:
The utility model provides a kind of fracturing base fluid mixer, when can satisfy the live extensive operation of fracturing work pair The demand of fracturing base fluid further promotes mixed mixing efficiency and promotes the mixing quality of guanidine glue, realizes best Energy Efficiency Ratio, It more can satisfy the mixing between the material of different shape, the assembled scheme of the shearing-type mixer with pre-mixing apparatus is most suitably used In the more sensitive mixed processes of entrance of those additives to air.The combining form of pre-mixing apparatus and high-pressure injection mixer Negative pressure can be generated in feed opening, realize the effect of long-range pumping liquid or solid additive, when additive is powder, premix The addition of device reduces the case where powder wall built-up when commonly the ejector without pre-mixing apparatus uses, while preliminary water flow dispersion More conducively jet mixing.The combining form of pre-mixing apparatus and shearing-type mixer can be reduced under certain operating conditions gas into Enter, additive passes through the preliminary dispersion mixing of pre-mixing apparatus, enters shearing-type mixer later, and strong shear effect can make two Kind fluid is rapidly achieved uniform effect.Oilfield carries out pigment mixing, liquid is mixed with liquid, liquid and gas When the actual conditions such as mixing, solid and gas mixing conveying, combination of the above can satisfy different demands, improve the effect of mixing, The waste for reducing resource, generates actual economic benefit.
Utility model will be further described in detail below with reference to the attached drawings and specific embodiments.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model;
Wherein, 1 is inlet;2 be feed inlet;3 be connector;4 be annular space;5 be sleeve;6 be necking down, and 7 be trunnion, 8 It is side wall for diffuser, 9,10 be inclined-plane, and 11 be bevel edge.
Specific embodiment
Embodiment 1:
A kind of fracturing base fluid mixer as shown in Figure 1:, including swirl-flow premixed device, the swirl-flow premixed device include Inlet 1, feed inlet 2, connector 3 and annular space 4, feed inlet 2 are vertically arranged, and inlet 1 is horizontally disposed, the side wall 9 of feed inlet 2 Connect with sleeve 5, connector 3 is arranged in the inside of sleeve 5, and the side wall 9 of connector 3 and feed inlet 2 forms annular space 4, annular space 4 with Inlet 1 is connected to, and 9 lower end of side wall of feed inlet 2 has a bevel edge 11, and the top of connector 3 has an inclined-plane 10, inclined-plane 10 and tiltedly Side 11 has certain angle with vertical plane, and angle is 10~80 degree, as long as inclined-plane 10 and the guarantee of bevel edge 11 are respectively and vertical The angle in face is in 10~80 degree, and preferably inclined-plane 10 and bevel edge 11 is arranged in parallel, and the lower part of feed inlet 2 is sequentially connected contracting Neck 6, trunnion 7 and diffuser 8.
Liquid flows through annular space and compares Chinese patent from the flow effect of fluid from its top outflow CN203899476U substantially improves the speed and angle of liquid tangential flow, due to the improvement of triangular angular, in same flow velocity Under, the time of flow downstream flowing is elongated, and centrifugal effect is more preferable, and such eddy flow inner ring solution is easier and eddy flow outer ring liquid Carry out mixing diffusion;It due to the improvement of flow direction, can permit more liquid into the pre-mixing apparatus, and improve flow velocity, thus more Added with conducive to subsequent mixing;Inside pre-mixing apparatus, when eddy flow flows through the Venturi tube in downstream, the effect of turbulent mixture is generated Fruit.
Pre-mixing apparatus inlet is generally horizontal tangential into annular space, and water flow enters back into the position of bevel edge and inclined-plane crack gap Place generates eddy flow, can be by the gap between setting screw rod and the cooperation adjusting connector and side wall of nut, when this on connector When gap is sufficiently small, inlet has enough pressure, and swirl-flow premixed device can be converted into the form of jet stream.As extension, connection Some flow-stopping plates can also be set on part so that water flow generates flow-disturbing and other effects, water flow from top to bottom successively by necking down, Trunnion and diffuser.When necessary, two inlets can also be set with reinforcing effect.
Embodiment 2:
Embodiment 1 is connected with high-pressure injection mixer, and high-pressure injection mixer is any of fixed flow discharge type or variable-flow type It is a kind of.
Embodiment 3:
Embodiment 1 is connected with shearing-type mixer.
Embodiment 4:
Embodiment 2 and embodiment 3 are connected.
Embodiment 5:
Embodiment 3 is connected with embodiment 3.
Embodiment 6:
Embodiment 2 and shearing series connection of pumps.
Embodiment 7:
Embodiment 3 and shearing series connection of pumps.
Embodiment 8:
Embodiment 2 and embodiment 3 are in parallel, can be in parallel two or more.
Embodiment 9:
Embodiment 2 is in parallel with embodiment 2, can it is in parallel two or more.
Embodiment 10:
Embodiment 3 is in parallel with embodiment 3, can it is in parallel two or more.
The above is only presently preferred embodiments of the present invention, not does limitation in any form to the present invention, it is all according to According to any simple modification to the above embodiments in technical spirit of the invention, equivalent variations, guarantor of the invention is each fallen within Within the scope of shield.

Claims (10)

1. a kind of fracturing base fluid mixer, which is characterized in that including swirl-flow premixed device, the swirl-flow premixed device include into Liquid mouth, feed inlet, connector and annular space, the feed inlet are vertically arranged, and the inlet is horizontally disposed, the charging The inside of sleeve, the side wall shape of the connector and feed inlet is arranged in the side wall and sleeve connection of mouth, the connector At annular space, the annular space is connected to inlet, and the side wall lower ends portion of the feed inlet has bevel edge, the connector Top has inclined-plane, and the inclined-plane and bevel edge have certain angle with vertical plane, and angle is 10~80 degree, it is described into The lower part of material mouth sets gradually necking down, trunnion and diffuser.
2. fracturing base fluid mixer according to claim 1, which is characterized in that further include concatenated with swirl-flow premixed device High-pressure injection mixer, the high-pressure injection mixer are any one of fixed flow discharge type or variable-flow type.
3. fracturing base fluid mixer according to claim 1, which is characterized in that further include concatenated with swirl-flow premixed device Shearing-type mixer.
4. fracturing base fluid mixer according to claim 2, which is characterized in that also with pressure break base as claimed in claim 3 Liquid mixer is connected.
5. fracturing base fluid mixer according to claim 3, which is characterized in that also with pressure break base as claimed in claim 3 Liquid mixer is connected.
6. fracturing base fluid mixer according to claim 2, which is characterized in that further include connecting with high-pressure injection mixer Shear pump.
7. fracturing base fluid mixer according to claim 3, which is characterized in that further include concatenated with shearing-type mixer Shear pump.
8. fracturing base fluid mixer according to claim 2, which is characterized in that can be with pressure break base as claimed in claim 2 Liquid mixer carries out parallel connection, can be in parallel two or more.
9. fracturing base fluid mixer according to claim 2, which is characterized in that two fracturing base fluid mixers can be used simultaneously The mode of connection, can be in parallel two or more.
10. fracturing base fluid mixer according to claim 3, which is characterized in that two fracturing base fluid mixers can be used Mode in parallel, can be in parallel two or more.
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