CN103233714B - A kind of pressure break mixing device - Google Patents
A kind of pressure break mixing device Download PDFInfo
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- CN103233714B CN103233714B CN201310164852.XA CN201310164852A CN103233714B CN 103233714 B CN103233714 B CN 103233714B CN 201310164852 A CN201310164852 A CN 201310164852A CN 103233714 B CN103233714 B CN 103233714B
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Abstract
The invention provides a kind of pressure break mixing device, for mixture fracturing fluid, it includes solid and liquid blending device, and described solid and liquid blending is set to pressure vessel, comprising: the solid introducing port that described of the fracturing fluid solid particle can be imported；Import the base fluid introducing port of described of the fracturing fluid base fluid；Hold the mixture inner chamber of described solid particle and described base fluid；Derive the described of the fracturing fluid solid-liquid export mouth of mixture。Pressure break mixing device provided by the invention; its can by normal temperatures in the carbon dioxide of gaseous state or the material such as oil gas make it remain liquid condition by high pressure; and then it is mixed to form fracturing fluid with solid particle, it is achieved that prepare using liquid carbon dioxide or liquefied petroleum gas (propane) as the of the fracturing fluid purpose of base fluid。
Description
Technical field
The present invention relates to and adopt oil/gas equipment technical field, more particularly, it relates to a kind of pressure break mixing device。
Background technology
Oil, gas well are in formation testing or production process, owing near wellbore zone has pollution (drilling well, cement the well, wash Well Killing Process and all can pollute) or the low reason of stratum original permeability that oil, gas well yield can be caused relatively low, and this problem can be solved by fracturing technique。
Fracturing technique refers in oil recovery or gas recovery, utilize fluid pressure effect, make oil, the reservoir of gas forms a kind of method in crack, its concrete operations are the pumps adopting high-pressure large-displacement, utilize the principle of liquid pressure transmission, to have the liquid (i.e. fracturing fluid) of certain viscosity, inject to reservoir with the pressure of the absorbability more than reservoir, and make well cylinder pressure gradually rise, thus having suppressed high pressure in shaft bottom, when this pressure is more than the tensile strength of the crustal stress of Around A Borehole and formation rock, just stratum generation crack near shaft bottom, continue to inject fracturing fluid, crack extends forward and fills out with fracturing fluid, after closing well, fracturing fluid is present in crack, thus being formed in stratum near shaft bottom, there is certain physical dimension and the sand packed fracture of high flow conductivity, well is made to reach the purpose of increasing yield and injection。Wherein, fracturing fluid is formed by the liquid (being commonly referred to as base fluid) as solvent and solid particle (such as the quartz sand etc.) mixture as solute。
At present, in traditional fracturing technology, oil reservoir or gas-bearing formation are carried out pressure break by commonly used water base or oil base fracturing fluid, but use water base or oil base fracturing fluid to carry out fracturing operation and there is certain defect: first, the fracturing fluid of water base or oil base is after degraded, reservoir being damaged, the pore around Reservoir Fracture can be damaged by the impurity produced of especially degrading。Secondly, after pressure break completes, water base or oil base fracturing fluid is counter, and to arrange the time long, and anti-row's effect is difficult to prediction, affect normally exploiting of petroleum-gas fiedl。Appearance in order to avoid the problems referred to above, people have employed liquid carbon dioxide or liquefied petroleum gas (propane) as of the fracturing fluid base fluid, but, carbon dioxide or oil gas (propane) can only exist in liquid condition under a certain pressure, and it is existing (solid for mixture suitable in water base or oil base fracturing fluid mixing device, liquid raw material becomes fracturing fluid) because without making fracturing fluid be present in environment under high pressure, so it holds space is open by design, it is not particularly suited for using liquid carbon dioxide or liquefied petroleum gas (propane) as the of the fracturing fluid preparation of base fluid。
Therefore, how to provide a kind of for preparing using liquid carbon dioxide or liquefied petroleum gas (propane) as the of the fracturing fluid pressure break mixing device of base fluid, be 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 pressure break mixing device, it can be applicable to using liquid carbon dioxide or liquefied petroleum gas (propane) as the of the fracturing fluid preparation of base fluid。
In order to achieve the above object, the present invention provides following technical scheme:
A kind of pressure break mixing device, for mixture fracturing fluid, it includes solid and liquid blending device, and described solid and liquid blending is set to pressure vessel, comprising:
The solid introducing port that described of the fracturing fluid solid particle can be imported；
Import the base fluid introducing port of described of the fracturing fluid base fluid；
Hold the mixture inner chamber of described solid particle and described base fluid；
Derive the described of the fracturing fluid solid-liquid export mouth of mixture。
Preferably, in above-mentioned pressure break mixing device, also include the airtight storage device for holding described of the fracturing fluid solid particle, and described storage device and described solid and liquid blending device are arranged in chassis。
Preferably, in above-mentioned pressure break mixing device, also including being arranged in described chassis and could alter that the turning device of described storage device laying state, described turning device can make described storage device be horizontally oriented the state with vertical direction with its axis to be arranged in described chassis。
Preferably, in above-mentioned pressure break mixing device, described storage device with its axis be in the state of vertical direction arrange time, described solid and liquid blending device is arranged on the bottom of described storage device, and described storage device is by being arranged on support arrangement and the earth surface bottom it。
Preferably, in above-mentioned pressure break mixing device, described solid and liquid blending device is arranged on a described support arrangement。
Preferably, in above-mentioned pressure break mixing device, also include the liquid appending apparatus being arranged on a described support arrangement with described mixture inner space。
Preferably, in above-mentioned pressure break mixing device, described chassis is provided with the fluid pressure drive device driving described solid and liquid blending device, described turning device and the work of described liquid appending apparatus。
Preferably, in above-mentioned pressure break mixing device, described storage device is pressurized tank。
Preferably, in above-mentioned pressure break mixing device, described turning device includes multiple two-stage hydraulic cylinder。
Preferably, in above-mentioned pressure break mixing device, described support arrangement includes multiple hydraulic pressure support bar worked under the driving of described fluid pressure drive device。
In pressure break mixing device provided by the invention, it is operationally, the mixture inner chamber of solid and liquid blending device is applied pressure, solid particle enters into solid and liquid blending device from solid introducing port, owing to solid and liquid blending is set to pressure vessel, its mixture inner chamber is environment under high pressure, after base fluid enters into solid and liquid blending device inside by base fluid introducing port, liquid condition still can be remained under high pressure effect, become and derive from solid-liquid export mouth after of the fracturing fluid base fluid, solid particle and base fluid are compounded into fracturing fluid in mixture inner chamber。Pressure break mixing device provided by the invention; its can by normal temperatures in the carbon dioxide of gaseous state or the material such as oil gas make it remain liquid condition by high pressure; and then it is mixed to form fracturing fluid with solid particle, it is achieved that prepare using liquid carbon dioxide or liquefied petroleum gas (propane) as the of the fracturing fluid purpose of base fluid。
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, the accompanying drawing used required in embodiment or description of the prior art will 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, under the premise not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings。
The structural representation that the storage device of the pressure break mixing device that Fig. 1 provides for the embodiment of the present invention is horizontally disposed；
The structural representation that the storage device of the pressure break mixing device that Fig. 2 provides for the embodiment of the present invention is vertically arranged。
In figure 1 above-Fig. 2:
Chassis 1, fluid pressure drive device 2, storage device 3, turning device 4, support arrangement 5, solid and liquid blending device 6, liquid appending apparatus 7。
Detailed description of the invention
The invention provides a kind of pressure break mixing device, it can be applicable to using liquid carbon dioxide or liquefied petroleum gas (propane) as the of the fracturing fluid preparation of base fluid。
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, it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments。Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art obtain under not making creative work premise, broadly fall into the scope of protection of the invention。
As depicted in figs. 1 and 2, the pressure break mixing device that the embodiment of the present invention provides, for mixture fracturing fluid, such as using liquid carbon dioxide or liquefied petroleum gas (propane) as the fracturing fluid of base fluid, comprising: solid and liquid blending device 6, this solid and liquid blending device 6 is low temperature resistant pressure vessel, comprising:
The solid introducing port to be imported by the solid particle (such as sand) in storage device 3 is connected with storage device 3；
Import the base fluid introducing port of of the fracturing fluid base fluid,；
Hold the mixture inner chamber of solid particle and base fluid；
Derive the of the fracturing fluid solid-liquid export mouth of mixture。
In the pressure break mixing device that the present embodiment provides, it is operationally, the mixture inner chamber of solid and liquid blending device 6 is applied pressure, solid particle enters into solid and liquid blending device 6 from solid introducing port, owing to solid and liquid blending device 6 is pressure vessel, its mixture inner chamber is environment under high pressure, after base fluid enters into the mixture inner chamber of solid and liquid blending device 6 by base fluid introducing port, liquid condition still can be remained under high pressure effect, become and derive from solid-liquid export mouth after of the fracturing fluid base fluid, solid particle and base fluid are compounded into fracturing fluid in mixture inner chamber。
The pressure break mixing device that the present embodiment provides; its can by normal temperatures in the carbon dioxide of gaseous state or the material such as oil gas make it remain liquid condition by high pressure; and then it is mixed to form fracturing fluid with solid particle, it is achieved that prepare using liquid carbon dioxide or liquefied petroleum gas (propane) as the of the fracturing fluid purpose of base fluid。
In order to optimize technique scheme further, in the pressure break mixing device that the present embodiment provides, also include the airtight storage device 3 for holding of the fracturing fluid solid particle, and storage device 3 and solid and liquid blending device 6 are arranged at as in the chassis 1 of arranging device, as shown in Figure 1。In the prior art, mixing device is open by design, its Compounding Operation carried out carries out in atmospheric pressure environment, and the storage device 3 that the present embodiment provides is preferably airtight storage device 3, it can turn on solid and liquid blending device 6, and then it is collectively forming a closing space, and make this close the pressure in space more than external atmosphere pressure, and then make what solid particle can be convenient to enter in solid and liquid blending device 6 at any time, without worrying that the pressure of the mixture inner chamber of solid and liquid blending device 6 is impacted by solid particle in the process entering solid and liquid blending device 6, and then make the work of of the fracturing fluid mixture to continuously perform。Certainly, the storage device 3 that the present embodiment provides can also be non-airtight storage device 3, and solid particle advances in solid and liquid blending device 6 in solid and liquid blending device 6 work, and then solid and liquid blending device 6 is operated in sealed states。
Storage device 3 and solid and liquid blending device 6 are arranged in chassis 1, are conducive to the transport of the pressure break mixing device that the present embodiment provides to move, improve its operation flexibility, it is possible to transport between different construction sites very easily。
Preferably, in the pressure break mixing device that the present embodiment provides, also include being arranged in chassis 1 and could alter that the turning device 4 of storage device 3 laying state, turning device 4 can make storage device 3 be horizontally oriented the two states with vertical direction with its axis to be arranged in chassis 1, and, storage device 3 with its axis be in the state of vertical direction arrange time, solid and liquid blending device 6 is arranged on the bottom of storage device 3, and storage device 3 is by being arranged on support arrangement 5 and the earth surface bottom it, as shown in Figure 2。In order to reduce energy consumption, and make the work convenient and smooth more of pressure break mixing device that the present embodiment provides, when the present embodiment is operated preferably in storage device 3, it is at the state that axis vertically arranges to be operated, in this state, solid and liquid blending device 6 is positioned at the bottom of storage device 3, and the solid particle in such storage device 3 just can enter in solid and liquid blending device 6 by the gravity of self, it is not necessary to arranges power set again。But, if storage device 3 makes its axis vertically arrange all the time, its transport is then affected due to the dimensional problem of storage device 3 self, so for the ease of transport, chassis 1 is provided with turning device 4 with the duty upset that vertically arranged by storage device 3 axis for the horizontally disposed travel position of axis。
When storage device 3 be in the state that axis vertically arranges be operated time, in order to reduce the workload of chassis 1, it is preferable that storage device 3 is supported on the ground by a support arrangement 5。Concrete, solid and liquid blending device 6 is arranged on a support arrangement 5, as depicted in figs. 1 and 2。
In the pressure break mixing device that the present embodiment provides, also include the liquid appending apparatus 7 being arranged on a support arrangement 5 with the mixture inner space of solid and liquid blending device 6, as depicted in figs. 1 and 2。In the process of fracturing fluid mixture, if needing to add additive in fracturing fluid, then make liquid appending apparatus 7 be operated, and then by liquid appending apparatus 7 additive imported in the mixture inner chamber of solid and liquid blending device 6, and mix with fracturing fluid。
Concrete, solid and liquid blending device 6, turning device 4 and liquid appending apparatus 7 provide power to be operated by being arranged on the fluid pressure drive device 2 at chassis 1 driver's cabin rear, as depicted in figs. 1 and 2。
Preferably, storage device 3 is pressurized tank, for low-temperature pressure container。It operationally can connect formation one and seal space with solid and liquid blending device 6, and can bear certain low temperature and pressure requirements, it is possible to meet liquid carbon dioxide or the existence requirement of liquefied petroleum gas (propane)。
Further, turning device 4 includes multiple two-stage hydraulic cylinder, and a support arrangement 5 includes multiple hydraulic pressure support bar worked under the driving of fluid pressure drive device 2, as depicted in figs. 1 and 2。
The pressure break mixing device that the present embodiment provides, when specifically used, first pass through turning device 4 by pressurized tank tipped upright, then the base fluid introducing port of solid and liquid blending device 6 liquid carbon dioxide with upstream or liquefied petroleum gas (propane) storage device are connected, the solid-liquid export mouth of solid and liquid blending device 6 is connected with the pressure break pumping equipment in downstream, this makes it possible to by three interfaces of solid and liquid blending device 6 liquid carbon dioxide by upstream or liquefied petroleum gas (propane) storage device, pressurized tank, the pressure break pumping equipment in downstream forms the confined space of a connection, before operation, first in pressurized tank, add the sand of job requirements, after adding sand, by the pressurization of above-mentioned confined space pre-cooling, can also pass through to fill the mode of a small amount of liquid carbon dioxide or liquefied petroleum gas (propane) in confined space to be adjusted by the temperature and pressure in pressurized tank and be able to maintain that carbon dioxide or the oil gas (propane) state in liquid, then Compounding Operation is started。In mixture process, liquid carbon dioxide or liquefied petroleum gas (propane) mix in solid and liquid blending device 6 with the sand in pressurized tank discharges, and enters into the pressure break pumping equipment in downstream。In this mixture process, if needing to add additive, then added additives in fracturing fluid by liquid appending apparatus 7。
Described above to the disclosed embodiments, makes professional and technical personnel in the field be capable of or uses the present invention。The multiple amendment of these embodiments be will be apparent from for those skilled in the art, and generic principles defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments。Therefore, the present invention is not intended to be limited to the embodiments shown herein, and is to fit to the widest scope consistent with principles disclosed herein and features of novelty。
Claims (9)
1. a pressure break mixing device, for mixture fracturing fluid, it is characterised in that including solid and liquid blending device (6), described solid and liquid blending device (6) is pressure vessel, comprising:
The solid introducing port that described of the fracturing fluid solid particle can be imported；
Import the base fluid introducing port of described of the fracturing fluid base fluid；
Hold the mixture inner chamber of described solid particle and described base fluid；
Derive the described of the fracturing fluid solid-liquid export mouth of mixture；
For holding the airtight storage device (3) of described solid particle, and described storage device (3) and described solid and liquid blending device (6) are arranged in chassis (1)。
2. pressure break mixing device according to claim 1, it is characterized in that, also including being arranged on the turning device (4) that could alter that described storage device (3) laying state in described chassis (1), described turning device (4) can make described storage device (3) be horizontally oriented the state with vertical direction with its axis to be arranged in described chassis (1)。
3. pressure break mixing device according to claim 2, it is characterized in that, described storage device (3) with its axis be in the state of vertical direction arrange time, described solid and liquid blending device (6) is arranged on the bottom of described storage device (3), and described storage device (3) is by being arranged on support arrangement (5) and the earth surface bottom it。
4. pressure break mixing device according to claim 3, it is characterised in that described solid and liquid blending device (6) is arranged on a described support arrangement (5)。
5. pressure break mixing device according to claim 3, it is characterised in that also include being arranged on the upper liquid appending apparatus (7) with described mixture inner space of a described support arrangement (5)。
6. pressure break mixing device according to claim 5, it is characterized in that, described chassis (1) is provided with the fluid pressure drive device (2) driving described solid and liquid blending device (6), described turning device (4) and described liquid appending apparatus (7) to work。
7. pressure break mixing device according to claim 1, it is characterised in that described storage device (3) is pressurized tank。
8. pressure break mixing device according to claim 2, it is characterised in that described turning device (4) includes multiple two-stage hydraulic cylinder。
9. pressure break mixing device according to claim 6, it is characterised in that described support arrangement (5) includes multiple hydraulic pressure support bar of work under the driving of described fluid pressure drive device (2)。
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