CN103990410A - Blending system of fracturing fluid and blending technology of system - Google Patents
Blending system of fracturing fluid and blending technology of system Download PDFInfo
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- CN103990410A CN103990410A CN201410236167.8A CN201410236167A CN103990410A CN 103990410 A CN103990410 A CN 103990410A CN 201410236167 A CN201410236167 A CN 201410236167A CN 103990410 A CN103990410 A CN 103990410A
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Abstract
The invention provides a blending system of a fracturing fluid. The blending system comprises a suction pump, a mixer, a mixing tank, a secondary mixer which is arranged between the mixer and the nixing tank and is used for mixing the fracturing fluid again, and a parallel-connection water channel, wherein one end of the parallel-connection water channel is communicated with the suction pump, the parallel-connection water channel and a mixing water channel of the mixer are connected in parallel, and the other end of the parallel-connection water channel is communicated with the secondary mixer. The blending system provided by the invention has the advantages that the parallel water channel is additionally arranged and is connected with the mixing water channel in parallel, a base solution is capable of simultaneously entering two routes, namely the mixing water channel and the parallel-connection water channel, not all of the base solution enters the mixing water channel, a condition that the limitation on blending efficiency is caused by the relatively small flow of the mixing water channel is avoided, the blending time is shortened, the blending energy consumption is reduced, the fracturing fluid is formed through multi-time blending in a double-route manner, the mixing uniformity is improved, and the quality of the fracturing fluid is further optimized. The invention also provides a fracturing fluid blending technology suitable for the blending system of the fracturing fluid.
Description
Technical field
The present invention relates to adopt oil/gas equipment technical field, more particularly, relate to a kind of of the fracturing fluid mixing system, the invention still further relates to a kind of of the fracturing fluid mixture technique.
Background technology
Oil, gas well are in formation testing or production process, can cause oil, gas well yield lower because there are pollution (drilling well, cement the well, wash Well Killing Process all can pollute) or the low reason of stratum original permeability near wellbore zone, and this problem can solve by fracturing technique.
Fracturing technique refers in oil recovery or gas production process, utilize fluid pressure effect, make the reservoir of oil, gas form a kind of method in crack, its concrete operations are the pumps that adopt high-pressure large-displacement, utilize the principle of liquid pressure transmission, will there is the liquid (being fracturing fluid) of certain viscosity, inject to reservoir with the pressure of the absorbability that is greater than reservoir, and then near shaft bottom, in stratum, form the sand packed fracture with certain physical dimension and high flow conductivity, make well reach the object of increasing yield and injection.
In the prior art, of the fracturing fluid mixture technique is: use suction pump to extract base fluid (being generally water or oil as the base fluid of fracturing fluid solvent), then base fluid is sent in blender, make base fluid and guanidine rubber powder in blender, be mixed to form fracturing fluid, then make fracturing fluid enter into blending tank, and agitator in mixed tank fully stirs, after having stirred, fracturing fluid is discharged to upstream device by the excavationg pump being communicated with blending tank.
In said process, because the aperture of the inlet of blender is less, cause the overall flow of mixing water channel at blender place less, not only affect of the fracturing fluid mixture efficiency, and can extend the overall mixture time, make mixture energy consumption larger.
Therefore, how improving of the fracturing fluid mixture efficiency to reduce mixture energy consumption, is current those skilled in the art's problem demanding prompt solution.
Summary of the invention
In view of this, the invention provides a kind of of the fracturing fluid mixing system, it can improve of the fracturing fluid mixture efficiency, has shortened the mixture time, thereby has reduced mixture energy consumption.
In order to achieve the above object, the invention provides following technical scheme:
A kind of of the fracturing fluid mixing system, comprises suction pump, blender and blending tank, and it also comprises:
Be arranged between described blender and described blending tank, with the secondary mixer that described fracturing fluid is mixed again;
One end is communicated with described suction pump, and forms water channel in parallel in parallel with the water channel that mixes at described blender place, and the other end of described water channel in parallel is communicated with described secondary mixer.
Preferably, in above-mentioned of the fracturing fluid mixing system, described secondary mixer is diffusion chamber.
Preferably, in above-mentioned of the fracturing fluid mixing system, also comprise the flow control valve being arranged on described water channel in parallel.
Preferably, in above-mentioned of the fracturing fluid mixing system, described blender is two, and lays respectively on two mixing by-paths in parallel.
Based on the above-mentioned of the fracturing fluid mixing system providing, the present invention also provides a kind of of the fracturing fluid mixture technique, is applicable to the of the fracturing fluid mixing system described in above-mentioned any one, and it comprises the following steps:
1) use described suction pump to draw base fluid;
2) base fluid that makes to discharge from described suction pump flows in described water channel in parallel and described mixing water channel simultaneously;
3) base fluid of the described mixing water channel of order inflow enters in described blender and mixes with guanidine rubber powder, forms high concentration fracturing fluid;
4) drive high concentration fracturing fluid to flow in described secondary mixer in described mixing water channel;
5) make the to flow through base fluid of described water channel in parallel flows in described secondary mixer simultaneously, to mix in described secondary mixer with high concentration fracturing fluid;
6) after base fluid mixes in described secondary mixer again with high concentration fracturing fluid, enter described blending tank and stir to form finished product fracturing fluid.
In of the fracturing fluid mixing system provided by the invention, on the basis of original structure, water channel in parallel and secondary mixer are set up, wherein, water channel in parallel is communicated with suction pump, and form parallel-connection structure with blender, only some enters into mixing water channel to make base fluid, and another part enters into water channel in parallel, enter in the base fluid inflow blender that mixes water channel and mix with guanidine rubber powder, thereby form high concentration fracturing fluid, high concentration fracturing fluid flows out from blender, and flow to blending tank in mixing water channel, and parallel pipeline is communicated with secondary mixer, in the time that high concentration fracturing fluid flows into secondary mixer, can again further mix with the base fluid in water channel in parallel, thereby its concentration is reduced, obtain the fracturing fluid of technological requirement concentration, then making fracturing fluid enter into blending tank stirs, after stirring completes, fracturing fluid being delivered to upstream device participates in producing.
In the present invention, by setting up water channel in parallel, and make it and mix water channel and form parallel connection, make the base fluid flowing out from suction pump, can enter to mix in water channel and two paths of water channel in parallel simultaneously and circulate to realize of the fracturing fluid mixture, instead of all enter in mixing water channel, avoid because mixing the less restriction that mixture efficiency is caused of water channel flow, of the fracturing fluid mixture efficiency is further improved, has shortened the mixture time, reduced mixture energy consumption.And the set-up mode of dual path also makes the fracturing fluid can be through mixture repeatedly and form, and has improved the mixing uniformity of fracturing fluid self, makes of the fracturing fluid quality obtain further optimization.The present invention also provides a kind of fracturing fluid mixture technique that is applicable to above-mentioned of the fracturing fluid mixing system.
Brief description of the drawings
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
The schematic diagram of the of the fracturing fluid mixing system that Fig. 1 provides for the embodiment of the present invention;
The flow chart of the of the fracturing fluid mixture technique that Fig. 2 provides for the embodiment of the present invention.
In upper Fig. 1:
Suction pump 1, blender 2, blending tank 3, water channel in parallel 4, secondary mixer 5, flow control valve 6, suction header 7, flowmeter 8, dry powder can 9, excavationg pump 10, discharge collector 11.
Detailed description of the invention
The invention provides a kind of of the fracturing fluid mixing system, it can improve of the fracturing fluid mixture efficiency, has shortened the mixture time, thereby has reduced mixture energy consumption.
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiment.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
As shown in Figure 1, the of the fracturing fluid mixing system that the embodiment of the present invention provides, comprises suction pump 1, blender 2 and blending tank 3, and it also comprises:
Be arranged between blender 2 and blending tank 3, with the secondary mixer 5 that fracturing fluid is mixed again;
One end is communicated with suction pump 1, and forms water channel in parallel 4 in parallel with the water channel that mixes at blender 2 places, and the other end of water channel 4 in parallel is communicated with secondary mixer 5.
In the of the fracturing fluid mixing system that the present embodiment provides, on the basis of original structure, water channel 4 in parallel and secondary mixer 5 are set up, wherein, water channel 4 in parallel is communicated with suction pump 1, and form parallel-connection structure with blender, only some enters into mixing water channel to make base fluid (in the present embodiment, the base fluid of indication is clear water), and another part enters into water channel 4 in parallel, enter in the base fluid inflow blender 2 that mixes water channel and mix with guanidine rubber powder, the base fluid amount of mixing water channel because flowing through is less, so the fracturing fluid forming is high concentration fracturing fluid, after high concentration pressure break derives from blender 2, from mix water channel, flow to blending tank 3, in the time that high concentration fracturing fluid flow in secondary mixer 5, the base fluid of water channel 4 in parallel of flowing through can enter into secondary mixer 5 simultaneously, thereby high concentration fracturing fluid is mixed again with base fluid, and then of the fracturing fluid concentration is reduced, to obtain the fracturing fluid of technological requirement concentration, then making fracturing fluid enter into blending tank 3 stirs, and fracturing fluid is delivered to upstream device participation and produce.
In the present embodiment, by setting up water channel 4 in parallel, and make it and mix water channel and form parallel connection, make the base fluid flowing out from suction pump, can enter to mix in water channel and 4 two paths of water channel in parallel simultaneously and circulate to realize of the fracturing fluid mixture, instead of all enter in mixing water channel, avoid because mixing the less restriction that mixture efficiency is caused of water channel flow, of the fracturing fluid mixture efficiency is further improved, has shortened the mixture time, reduced mixture energy consumption.And the set-up mode of dual path also makes the fracturing fluid can be through mixture repeatedly and form, and has improved the mixing uniformity of fracturing fluid self, makes of the fracturing fluid quality obtain further optimization.
In order further to optimize technique scheme, in the of the fracturing fluid mixing system that the present embodiment provides, secondary mixer 5 is diffusion chamber.In the present embodiment, near blending tank 3 or on blending tank 3, diffusion chamber being preferably set, is because diffusion chamber, in can realizing fracturing fluid secondary immixture, can also be eliminated the bubble in fracturing fluid.
Preferably, in the of the fracturing fluid mixing system that the present embodiment provides, also comprise the flow control valve 6 being arranged on water channel 4 in parallel.It as shown in Figure 1, on water channel 4 in parallel, flow control valve 6 is set, can controls flexibly the base fluid amount in water channel 4 in parallel, so that can obtain meeting the fracturing fluid of technological requirement concentration after mixing with high concentrations of guanidine rubber powder.In addition, flow control valve 6 can also be controlled the base fluid amount that enters into blending tank 3 from water channel 4 in parallel, makes the interior of the fracturing fluid liquid level of blending tank 3 remain balance, avoids the too high or too low and normal work of impact of the interior liquid level of blending tank 3.
Concrete, be two for the blender 2 that mixes base fluid and guanidine rubber powder, and lay respectively on two mixing by-paths in parallel.As shown in Figure 1, in order to improve of the fracturing fluid mixture efficiency, mixing water channel is divided into two circulation branch roads, on each circulation branch road, be provided with a blender 2, blender 2, contact with base fluid and mix from the guanidine rubber powder of dry powder can 9 interior outputs, to form fracturing fluid, because the base fluid that enters into mixing water channel is the part that suction pump 1 is discharged base fluid, the total amount of base fluid is less, so the of the fracturing fluid concentration that now mixture forms is higher.Two blenders 2 be set and be located at two circulation branch roads, can make two blenders 2 can carry out of the fracturing fluid mixing simultaneously, thereby improve mixture efficiency.Certainly,, in the situation that actual production environment allows, blender 2 can also be more quantity.
As shown in Figure 2, the present embodiment also provides a kind of of the fracturing fluid mixture technique, is applicable to above-mentioned of the fracturing fluid mixing system, and it comprises the following steps:
S101, use suction pump 1 are drawn base fluid from the external world by suction header 7;
S102, make base fluid from discharging suction pump 1 after flowmeter 8 metering, flow into water channel 4 in parallel simultaneously and mix in water channel;
The base fluid of S103, the mixing water channel of flowing through enters in blender 3 and mixes with guanidine rubber powder, forms high concentration fracturing fluid;
S104, has tentatively mixed after, high concentration fracturing fluid flows in secondary mixer 5 in mixing water channel;
The base fluid of S105, the water channel 4 in parallel that makes to flow through enters in secondary mixer 5 simultaneously;
After S106, base fluid further mix in secondary mixer 5 with high concentration fracturing fluid, then enter blending tank 3 and stir to form finished product fracturing fluid, by the excavationg pump 10 being communicated with blending tank 3, finished product fracturing fluid is drained into and discharged in collector 11 afterwards, and flow to upstream device by discharging collector 11.
In this description, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is and the difference of other embodiment, between each embodiment identical similar part mutually referring to.
To the above-mentioned explanation of the disclosed embodiments, make professional and technical personnel in the field can realize or use the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiment, General Principle as defined herein can, in the situation that not departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (5)
1. an of the fracturing fluid mixing system, comprises suction pump (1), blender (2) and blending tank (3), it is characterized in that, also comprises:
Be arranged between described blender (2) and described blending tank (3), with the secondary mixer (5) that described fracturing fluid is mixed again;
One end is communicated with described suction pump (1), and forming water channel in parallel (4) in parallel with the water channel that mixes at described blender (2) place, the other end of described water channel in parallel (4) is communicated with described secondary mixer (5).
2. of the fracturing fluid mixing system according to claim 1, is characterized in that, described secondary mixer (5) is diffusion chamber.
3. of the fracturing fluid mixing system according to claim 1, is characterized in that, also comprises the flow control valve (6) being arranged on described water channel in parallel (4).
4. according to the of the fracturing fluid mixing system described in any one in claim 1-3, it is characterized in that, described blender (2) is two, and lays respectively on two mixing by-paths in parallel.
5. an of the fracturing fluid mixture technique, is characterized in that, is applicable to the of the fracturing fluid mixing system described in any one in the claims 1-4, and it comprises the following steps:
1) use described suction pump (1) to draw base fluid;
2) base fluid of discharge from described suction pump (1) is flowed in described water channel in parallel (4) and described mixing water channel simultaneously;
3) base fluid of the described mixing water channel of order inflow enters in described blender (2) and mixes with guanidine rubber powder, forms high concentration fracturing fluid;
4) drive high concentration fracturing fluid in described mixing water channel, to flow in described secondary mixer (5);
5) make the to flow through base fluid of described water channel in parallel (4) flows in described secondary mixer (5) simultaneously, to mix in described secondary mixer (5) with high concentration fracturing fluid;
6), after base fluid mixes in described secondary mixer (5) again with high concentration fracturing fluid, enter described blending tank (3) and stir to form finished product fracturing fluid.
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| CN201410236167.8A CN103990410A (en) | 2014-05-29 | 2014-05-29 | Blending system of fracturing fluid and blending technology of system |
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| CN201410236167.8A CN103990410A (en) | 2014-05-29 | 2014-05-29 | Blending system of fracturing fluid and blending technology of system |
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