CN117123110A - Integrated device and method for online mixing and injection of chemical compound flooding agent system - Google Patents
Integrated device and method for online mixing and injection of chemical compound flooding agent system Download PDFInfo
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- CN117123110A CN117123110A CN202210545340.7A CN202210545340A CN117123110A CN 117123110 A CN117123110 A CN 117123110A CN 202210545340 A CN202210545340 A CN 202210545340A CN 117123110 A CN117123110 A CN 117123110A
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- 238000002347 injection Methods 0.000 title claims abstract description 178
- 239000007924 injection Substances 0.000 title claims abstract description 178
- 239000003795 chemical substances by application Substances 0.000 title claims abstract description 108
- 150000001875 compounds Chemical class 0.000 title claims abstract description 82
- 238000002156 mixing Methods 0.000 title claims abstract description 55
- 238000000034 method Methods 0.000 title claims abstract description 42
- 239000007788 liquid Substances 0.000 claims abstract description 98
- 230000007246 mechanism Effects 0.000 claims abstract description 41
- 239000000843 powder Substances 0.000 claims abstract description 41
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 22
- 239000000375 suspending agent Substances 0.000 claims abstract description 21
- 239000003129 oil well Substances 0.000 claims abstract description 20
- 238000005303 weighing Methods 0.000 claims abstract description 15
- 238000004140 cleaning Methods 0.000 claims abstract description 11
- 238000003756 stirring Methods 0.000 claims description 114
- 238000013329 compounding Methods 0.000 claims description 35
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 22
- 239000003153 chemical reaction reagent Substances 0.000 claims description 13
- 239000000126 substance Substances 0.000 claims description 10
- 239000002131 composite material Substances 0.000 claims description 7
- 238000002360 preparation method Methods 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 6
- 239000000725 suspension Substances 0.000 claims description 5
- 238000011049 filling Methods 0.000 claims description 2
- 238000013019 agitation Methods 0.000 description 64
- 229920000642 polymer Polymers 0.000 description 31
- 230000008569 process Effects 0.000 description 15
- 239000000243 solution Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000004891 communication Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000003921 oil Substances 0.000 description 3
- 239000004094 surface-active agent Substances 0.000 description 3
- 239000003431 cross linking reagent Substances 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000000295 fuel oil Substances 0.000 description 2
- 239000000499 gel Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000010298 pulverizing process Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 230000002940 repellent Effects 0.000 description 2
- 239000005871 repellent Substances 0.000 description 2
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical group OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 125000000217 alkyl group Chemical group 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004581 coalescence Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 150000002148 esters Chemical group 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 235000015110 jellies Nutrition 0.000 description 1
- 239000008274 jelly Substances 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000004005 microsphere Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920002401 polyacrylamide Polymers 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000003252 repetitive effect Effects 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F33/00—Other mixers; Mixing plants; Combinations of mixers
- B01F33/80—Mixing plants; Combinations of mixers
- B01F33/81—Combinations of similar mixers, e.g. with rotary stirring devices in two or more receptacles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/71—Feed mechanisms
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/80—Forming a predetermined ratio of the substances to be mixed
- B01F35/83—Forming a predetermined ratio of the substances to be mixed by controlling the ratio of two or more flows, e.g. using flow sensing or flow controlling devices
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
Abstract
The invention belongs to the technical field of oil and gas exploitation, and particularly discloses an integrated device for online mixing and injection of a chemical compound flooding agent system. The powder injection device comprises a first injection unit, a second injection unit and a control unit, wherein the first injection unit comprises a first tank body for containing powder agent, a weighing feeder and an injection mechanism; the second injection unit comprises a second tank body for containing the liquid viscosity reducing agent and a second metering pump; the third injection unit comprises a third tank body for containing a suspension agent and a third metering pump, the first end of the mixing unit is communicated with the first injection unit, the second injection unit and the third injection unit through channel pieces, the second end of the mixing unit is connected with an oil well through an injection port, and the control mechanism is connected with the weighing feeder, the injection mechanism, the second metering pump and the third metering pump. The invention also discloses an integrated method for online mixing and injection of the chemical compound flooding agent system and a self-cleaning method.
Description
Technical Field
The invention relates to the technical field of oil and gas exploitation, in particular to an integrated device for online mixing and injection of a chemical compound flooding agent system, an integrated method for online mixing and injection of the chemical compound flooding agent system and a self-cleaning method.
Background
In the process of oil and gas exploitation, a heavy oil reservoir has special high viscosity and high freezing point characteristics, and various aspects of development and application face technical problems, wherein the mixing and injection module of the chemical compound flooding agent used in the heavy oil reservoir also has technical problems which cannot be solved.
CN102817602 discloses an on-line profile control method and apparatus for polymer flooding oil field, comprising a polymer solution injection line having an inlet end and an outlet end. An annular liquid mixer is arranged in parallel with the polymer solution injection line. The two ends of the annular liquid mixer are respectively provided with a liquid inlet horn mouth and a liquid outlet horn mouth, and the liquid inlet horn mouth and the inlet end are respectively connected with a polymer solution inlet pipeline. The liquid outlet horn mouth and the outlet end are respectively connected with a mixed liquid outlet pipeline. And a cross-linking agent solution inlet pipeline connected to the inner annular wall of the annular mixer. One end of the cross-linking agent solution inlet pipeline extending into the annular liquid mixer is opposite to the liquid inlet bell mouth. The invention designs manifold injection of polymer injection and gel injection, but does not have the capability of mixing and injection integration. In addition, CN209780857 discloses a continuous on-line autogenous and injection integrated device for compound dispersion gel flooding agent, which can mix and inject two liquid agents, but cannot meet the mixing requirements of chemical compound flooding agents on agents in different states.
Disclosure of Invention
The invention aims to provide an integrated device for online mixing and injection of a chemical compound driving agent system, which can integrate a mixing module and an injection module, and can also prepare a chemical compound driving agent formed by mixing a plurality of different types of raw materials. Compared with the device with single applicable object in the prior art, the invention has better compatibility. In addition, because the device can carry out automatic production and control, the labor such as manual metering and manual transportation is effectively reduced, and the labor cost of enterprises is further reduced. The invention also provides an integrated method for online mixing and injection of the chemical compound flooding agent system and a self-cleaning method.
According to a first aspect of the present invention, there is provided an integrated device for online compounding and injection of a chemical compound flooding agent system, comprising a first injection unit comprising a first tank for containing a powder agent, a weighing feeder connected to the first tank, and an injection mechanism for guiding the powder agent from the weighing feeder; the second injection unit comprises a second tank body for containing the liquid viscosity reducing agent and a second metering pump connected with the second tank body; the third injection unit comprises a third tank body used for containing a suspension agent and a third metering pump connected with the third tank body, a mixing unit, a first end of the mixing unit is communicated with the first injection unit, the second injection unit and the third injection unit through channel pieces, and a second end of the mixing unit is connected with an oil well through an injection port and is connected with a control mechanism, wherein the control mechanism is configured to control the flow rate of the agent flowing to the mixing unit from the first tank body, the second tank body and the third tank body; the compounding unit is configured to mix and deliver reagents to the well through the injection port.
In one embodiment, the first injection unit further comprises a stirrer arranged between the first tank and the weighing feeder for guiding the powder agent, wherein the stirrer is connected with the control mechanism.
In one embodiment, the injection mechanism comprises a jet pump, a vibratory hopper communicating the weigh feeder with a first end of the jet pump; and a first plunger pump connected with the second end of the jet pump, wherein the third end of the jet pump is connected with the mixing unit through the channel piece.
In one embodiment, the mixing unit comprises a first stirring tank and a second stirring tank, wherein a first liquid level meter is arranged on the first stirring tank, a second liquid level meter is arranged on the second stirring tank, and the first liquid level meter and the second liquid level meter are connected with the control mechanism.
In one embodiment, the first and second stirred tanks are distributed in parallel, and the channel member is selectively connected to the first and second stirred tanks.
In one embodiment, the integrated device for online mixing and injection of the chemical compound flooding agent system further comprises an injection pipeline connected with an external water source and a second plunger pump, wherein the injection pipeline is respectively connected with the first plunger pump and the injection port, a first end of the second plunger pump is connected with the injection pipeline, and a second end of the second plunger pump is connected with the channel piece.
In one embodiment, the integrated device for online mixing and injecting of the chemical compound flooding agent system further comprises a third plunger pump arranged between the mixing unit and the injection port, and a flowmeter connected with the third plunger pump, wherein the flowmeter is connected with the control mechanism, and the third plunger pump is selectively connected with the first stirring tank and the second stirring tank.
According to a second aspect of the present invention, there is provided an integrated method for online mixing and injection of a chemical compound driving agent system, the method being performed by the integrated device for online mixing and injection of a chemical compound driving agent system as described above, comprising the steps of S1, respectively loading a powder agent, a liquid viscosity reducing agent and a suspension agent into the first tank, the second tank and the third tank, and calculating output parameters of each material by the control mechanism; s2, starting the first stirring tank and the second stirring tank; s3, conveying the suspension agent into the first stirring tank and the second stirring tank through the channel piece by the third injection unit according to the output parameters in S1; the second injection unit conveys the liquid viscosity reducing agent into the first stirring tank and the second stirring tank according to the output parameters in the step S1; the first injection unit conveys the powder agent into the first stirring tank and the second stirring tank according to the output parameters in the step S1; s4, liquid in the injection pipeline is sequentially conveyed into the first stirring tank or the second stirring tank through the first plunger pump and the jet pump, and at the moment, the liquid in the first stirring tank or the second stirring tank is separated from the full tank by 1-2m < 3 >; s5, conveying the liquid from the injection pipeline into the first stirring tank or the second stirring tank through the second plunger pump to perform liquid level compensation, and alternately preparing the liquid from the first stirring tank and the second stirring tank so as to obtain the mixed chemical compound flooding agent; s6, the first stirring tank and the second stirring tank alternately inject the mixed chemical compound driving agent into an oil well through the second plunger pump and the injection port.
In one embodiment, the powder required to include a single dispense is V.rho.x; the viscosity reducing amount required by single liquid preparation is V.y; the suspension dosage is V.z; wherein x is the concentration of the powder agent, y is the concentration of the viscosity reducing agent, z is the concentration of the suspending agent, V is the volume of the first stirring tank or the second stirring tank, and ρ is the overall density of the chemical compound flooding agent system.
According to a third aspect of the present invention there is provided a self-cleaning method for an integrated device for the on-line compounding and injection of a chemical compound flooding agent system as described above, the method comprising the steps of: firstly, liquid from the injection pipeline is injected into the first stirring tank and the second stirring tank through the first plunger pump and the jet pump in sequence, and the liquid occupies 1/2 of the volume of the first stirring tank and the second stirring tank respectively; then, injecting the liquid from the injection pipeline into the first stirring tank and the second stirring tank through the second plunger pump, stirring for 30min, filling the inner cavities of the first stirring tank and the second stirring tank with the liquid, and injecting the stirred liquid into an oil well through the third plunger pump and the injection port; finally, the liquid from the injection pipeline is injected into the first stirring tank and the second stirring tank through the second plunger pump again, at the moment, the liquid fills the inner cavities of the first stirring tank and the second stirring tank, and the stirred liquid is injected into an oil well through the third plunger pump and the injection port.
Drawings
The invention will be described in detail below with reference to the attached drawing figures, wherein:
fig. 1 schematically shows the structure of an integrated device for on-line compounding and injection of a chemical compound flooding agent system according to the present invention.
In the drawings, like parts are designated with like reference numerals. The figures are not drawn to scale.
Detailed Description
The invention will be further described with reference to the accompanying drawings.
Fig. 1 schematically shows the structure of an integrated device 100 for on-line compounding and injection of a chemical compound flooding agent system according to the present invention. As shown in fig. 1, according to a first aspect of the present invention, an integrated apparatus 100 for on-line mixing and injection of a chemical compound flooding agent system is disclosed, which mainly comprises a first injection unit 10, a second injection unit 20, a third injection unit 30, and a mixing unit 40. Wherein the compounding unit 40 is in indirect communication with the first, second and third injection units 10, 20 and 30 through the channel member 50 for receiving a plurality of different reagents (hereinafter referred to as polymer powder, liquid viscosity reducing agent and suspension agent) from among the first, second and third injection units 10, 20 and 30.
According to the present invention, as shown in fig. 1, the integrated device 100 for online compounding and injection of the chemical compound flooding agent system further comprises a control mechanism 60. The control mechanism 60 is connected to the first injection unit 10, the second injection unit 20, and the third injection unit 30, respectively. According to one embodiment of the present invention, the control mechanism 60 is configured to be able to control the flow rate of the reagents flowing into the compounding unit 40 by the first injection unit 10, the second injection unit 20 and the third injection unit 30. The contents of which are described below.
According to the present invention, as shown in fig. 1, the first injection unit 10 includes a first tank 11. Wherein the first tank 11 can be used for storing a powder agent (hereinafter replaced by a polymer powder) and communicates with the mixing unit 40 through the passage member 50. The first tank 11 is connected to a weighing feeder 14 (described later), and can achieve a quantitative conveying effect by the weighing feeder 14. The weigh feeder 14 is connected to the control mechanism 60 and is capable of adjusting the flow rate of the polymer powder delivered by the first tank 11 to the mixing unit 40 under the control of the control mechanism 60. In one embodiment of the invention, the polymer powder is a polyacrylamide-based polymer.
According to the invention, as shown in fig. 1, the first injection unit 10 further comprises an agitator 13 and a weigh feeder 14. The agitator 13 communicates with the outlet end of the first tank 11 for sufficiently agitating and pulverizing the polymer powder flowing out of the first tank 11. In this way, the situation of unsmooth feeding caused by blockage of the first tank 11 in the discharging process is effectively avoided. Since the weighing feeder 14 is connected to the agitator 13, the polymer powder after agitation and pulverization can be more easily recorded by the weighing feeder 14, thereby making the arrangement ratio for the chemical compound driving agent more accurate. The weigh feeder 14 is also connected to a control mechanism 60, as described above. It will be readily appreciated that the rate of delivery of the polymer powder by the weigh feeder 14 is regulated by the control mechanism 60 during operation to more readily meet the compounding requirements of the integrated apparatus 100 for the on-line compounding and injection of chemical compound flooding agent systems.
According to the present invention, as shown in fig. 1, the first injection unit 10 further comprises an injection mechanism 12. The injection mechanism 12 includes a jet pump 15, a vibratory hopper 16, and a first plunger pump 17. Wherein one end of the vibration hopper 16 is connected to the weigh feeder 14 for receiving the polymer powder delivered from the weigh feeder 14. The other end of the vibrating hopper 16 is connected to a first end of the jet pump 15 for guiding polymer powder from the weigh feeder 14 into the jet pump 15. According to one embodiment of the invention, the vibration hopper 16 is able to cause the jet pump 15 to efficiently absorb the polymer powder by the action of vibration. The first plunger pump 17 connects the jet pump 15 with an injection line 70 (described below). According to one embodiment of the present invention, the first plunger pump 17 is capable of pressurizing the water in the injection line 70 and injecting the pressurized water into the jet pump 15, thereby causing the jet pump 15 to generate suction, whereby the jet pump 15 is capable of sufficiently absorbing the polymer powder in the vibration hopper 16. Further, the third end of the jet pump 15 communicates with the mixing unit 40 through the passage member 50. According to one embodiment of the invention, the jet pump 15 is capable of sufficiently mixing water from the injection line 70 with polymer powder from the first tank 11 to form a mixed reagent and injecting the mixed reagent into the mixing unit 40 through the channel member 50. The working principle of the jet pump 15 is well known to the person skilled in the art and will therefore not be described in detail.
According to the present invention, as shown in fig. 1, the second injection unit 20 includes a second tank 21 and a second metering pump 22. Wherein the second tank 21 can be used for storing the liquid viscosity reducing agent and communicates with the mixing unit 40 through the passage member 50. The second tank 21 is connected to a second metering pump 22, and the effect of quantitative conveyance can be achieved by the second metering pump 22. The second metering pump 22 is connected to the control mechanism 60 and is capable of adjusting the flow rate of the liquid viscosity reducing agent supplied from the second tank 21 to the mixing unit 40 under the control of the control mechanism 60. According to one embodiment of the invention, the second metering pump 22 is a diaphragm pump.
In one embodiment of the invention, the liquid viscosity reducing agent is a water soluble surfactant. In addition, the water-soluble surfactant is a water-soluble surfactant with phenol, ester and alkyl side chain functional groups.
According to the present invention, as shown in fig. 1, the third injection unit 30 includes a third tank 31 and a third metering pump 32. Wherein the third tank 31 can be used for storing a suspension agent and communicates with the mixing unit 40 through the passage member 50. It will be readily appreciated that the interior of the third tank 31 is capable of continuously agitating the suspension, thereby effectively avoiding sedimentation of the suspension within the third tank 31. The third tank 31 is connected to the third metering pump 32, and the effect of quantitative conveyance can be achieved by the third metering pump 32. The third metering pump 32 is connected to the control mechanism 60 and is capable of adjusting the flow rate of the suspension agent delivered from the second tank 21 to the mixing unit 40 under the control of the control mechanism 60. According to one embodiment of the invention, the third metering pump 32 is a plunger pump.
In one embodiment of the invention, the suspending agent comprises at least one of polymeric microspheres, jelly dispersions, pre-crosslinked particles.
According to the present invention, as shown in fig. 1, the compounding unit 40 includes a first agitation tank 41 and a second agitation tank 42. Wherein the first agitation tank 41 is arranged in parallel with the second agitation tank 42 and is connected with the passage member 50 in an alternating manner. Specifically, when the first agitation tank 41 receives the reagents delivered from the first tank 11, the second tank 21, and the third tank 31, the second agitation tank 42 communicates with a third plunger pump 80 (described later), and the mixed chemical compound flooding agent is injected into the oil well through the third plunger pump 80 and the injection port 1 (described later). When the second agitation tank 42 receives the reagents from the inside of the first tank 11, the second tank 21, and the third tank 31, the first agitation tank 41 communicates with the third plunger pump 80, and the mixed chemical compound flooding agent is injected into the oil well through the third plunger pump 80 and the injection port 1. In this way, the first tank 41 is used to prepare a liquid, and the second tank 42 is used to inject the mixed chemical compound flooding agent into the well. Similarly, the first agitation tank 41 injects the mixed chemical compound flooding agent into the well while the second agitation tank 42 is dispensing. By the mode, on one hand, the mixing and injection speed of the chemical flooding agent is effectively increased, so that the injection requirement of the integrated device 100 for on-line mixing and injection of the chemical composite flooding agent system is met; on the other hand, the accuracy of the proportioning of the integrated device 100 for on-line mixing and injection of the chemical compound flooding agent system can be effectively improved.
According to one embodiment of the present invention, as shown in fig. 1, a first liquid level meter 411 is provided on the first agitation tank 41, and a second liquid level meter 421 is provided on the second agitation tank 42. In this way, the liquid level in the first and second stirring tanks 41 and 42 can be monitored in real time by the first and second liquid level gauges 411 and 421. Further, the first liquid level meter 411 and the second liquid level meter 421 are both connected to the control mechanism 60, whereby the liquid level conditions in the first agitation tank 41 and the second agitation tank 42 can be fed back to the control mechanism 60 in real time. In one embodiment of the present invention, both the first gauge 411 and the second gauge 421 are capable of directly reading the volume and level of liquid in the respective mixing tanks.
In accordance with the present invention, as shown in FIG. 1, the integrated chemical compound flooding agent system compounding and injection device 100 further includes an injection line 70 connected to an external water source. The injection line 70 communicates with the first plunger pump 17 to deliver water into the jet pump 15 via the first plunger pump 17, further mixing the water with the polymer powder and forming a mixed reagent within the jet pump 15. The injection line 70 is also in communication with the well through the injection port 1, whereby the injection line 70 can inject water directly into the well through the injection port 1 when necessary.
According to the present invention, as shown in fig. 1, the integrated apparatus 100 for on-line compounding and injection of chemical compound flooding agent system further comprises a second plunger pump 71. A first end of the second plunger pump 71 is connected to the injection line 70; a second end of the second plunger pump 71 is selectively connected to the first agitation tank 41 and the second agitation tank 42. In this way, the second plunger pump 71 can selectively inject water into the first agitation tank 41 or the second agitation tank 42 according to the requirement of the integrated apparatus 100 for on-line mixing and injection of the chemical compound flooding agent system, thereby achieving the effect of liquid level compensation.
According to the present invention, the integrated device 100 for on-line compounding and injection of chemical compound flooding agent system further comprises a third plunger pump 80 and a flow meter 81. Wherein the third plunger pump 80 is connected to a flow meter 81. The flow meter 81 is connected to the control mechanism 60. Further, a third plunger pump 80 is provided between the compounding unit 40 and the injection port 1. Specifically, the third plunger pump 80 is in selective communication with the first agitation tank 41 and the second agitation tank 42. In this way, the third plunger pump 80 can pressurize the fluid discharged from the first agitation tank 41 or the second agitation tank 42, and then deliver the pressurized fluid to the oil well through the injection port 1.
In one embodiment of the present invention, a pressure gauge 2 is provided on the injection port 1 to measure the injection pressure of the chemical compound drive agent in real time. The pressure gauge 2 is connected to the control mechanism 60. In this way, the manometer 2 is able to feed back real-time measurements to the control mechanism 60, so that the control mechanism 60 makes corresponding adjustments.
According to a second aspect of the present invention, a mixing method for chemical compound flooding agent is disclosed, the method being configured by an integrated device 100 for on-line compounding and injection of chemical compound flooding agent systems as described above, comprising the steps of:
first, the polymer powder, the liquid viscosity reducing agent and the suspension agent are respectively charged into the first tank 11, the second tank 21 and the third tank 31 to be stored for use. The control mechanism 60 obtains output parameters of each material according to the parameters and the flow rate of the input chemical compound flooding agent.
The automated compounding process is then initiated and the individual materials are quantitatively fed sequentially into either the first agitation tank 41 or the second agitation tank 42 in accordance with the output parameters as described above.
After that, stirring, dissolution and dilution are performed in the first stirring tank 41 or the second stirring tank 42 according to the preparation procedure, and the first stirring tank 41 or the second stirring tank 42 is subjected to liquid level compensation by the second plunger pump 71, thereby preparing the chemical compound driving agent meeting the injection requirements.
Finally, the prepared chemical compound flooding agent is pressurized by the third plunger pump 80, and the pressurized chemical compound flooding agent is injected into the oil well through the injection port 1.
In one embodiment of the present invention, the specific flow of the compounding process includes (taking the first stirred tank 41 as an example):
first, the stirring function of the first stirring tank 41 is started.
Then, the suspension in the third tank 31 is fed to the first agitation tank 41 through the passage member 50 after being metered by the third metering pump 32. The liquid viscosity reducing agent in the second tank 21 is fed to the first agitation tank 41 through the passage member 50 after being metered by the second metering pump 22. The polymer powder in the first tank 11 is mixed with water from the first plunger pump 17 in the jet pump 15 after being metered by the weighing feeder 14, and then fed to the first agitation tank 41 through the passage member 50.
Thereafter, the liquid in the injection line 70 is sequentially fed to the first agitation tank 41 by the first plunger pump 17 and the jet pump 15, and the liquid in the first agitation tank 41 at this time is filled with the liquid 1-2m from the tank difference 3 。
Then, the liquid in the injection line 70 is fed to the first agitation tank 41 by the second plunger pump 71 for liquid level compensation and agitation is continued for 1 hour, thereby obtaining the chemical compound flooding agent after being mixed.
Finally, the chemical compound flooding agent mixed in the first stirring tank 41 is injected into the oil well through the second plunger pump 71 and the injection port 1.
It will be readily appreciated that the order of injection of the three different reagents is fixed, depending on the requirements of the preparation of the chemical complex flooding agent. In this way, coalescence failure of the chemical compound flooding agent can be effectively avoided.
According to one embodiment of the present invention, the second stirring tank 42 is filled with the mixed chemical compound flooding agent into the well through the third plunger pump 80 and the injection port 1 during the process of the first stirring tank 41. Similarly, when the second stirring tank 42 is used for preparing the liquid, the first stirring tank 41 is used for injecting the mixed chemical compound flooding agent into the oil well through the third plunger pump 80 and the injection port 1.
According to a third aspect of the present invention, a self-cleaning method for an integrated device 100 for online compounding and injection of a chemical compound repellent system, the method being configured by the integrated device 100 for online compounding and injection of a chemical compound repellent system as described above, comprising the steps of:
first, the water in the injection line 70 is injected into the first agitation tank 41 and the second agitation tank 42 through the first plunger pump 17, the jet pump 15, and the passage member 50 in this order. At this time, the first and second stirring tanks 41 and 42 occupy 1/2 of the volume, respectively.
Then, the water in the injection line 70 was injected into the first and second agitation tanks 41 and 42 by the second plunger pump 71 and agitated for 30 minutes. At this time, the inner cavities of the first stirring tank 41 and the second stirring tank 42 are filled with water. After the completion of stirring, the mixture is fed to the well through the third plunger pump 80 and the injection port 1.
Finally, the water in the injection line 70 is injected again into the first and second agitation tanks 41 and 42 by the second plunger pump 71 and agitated for 30 minutes. At this time, the inner cavities of the first stirring tank 41 and the second stirring tank 42 are filled with water. After the completion of stirring, the mixture is fed to the well through the third plunger pump 80 and the injection port 1.
It is easy to understand that the method is mainly applied to material adjustment or process change. In this way, the interior of the respective delivery conduit is effectively cleaned, thereby avoiding the possibility of reagent contamination or chemical reactions between different reagents as a result of repeated use.
In one embodiment of the present invention, the calculation method of the output parameters of each material as described above is as follows:
v ρx is the dose of polymer powder required for a single dispense;
vy is the dosage of the liquid viscosity reducing agent required by single liquid preparation;
vz is the dose of suspension agent required for a single dispense.
Where x is the concentration of the polymer powder in the chemical composite driving agent, y is the concentration of the liquid viscosity reducing agent in the chemical composite driving agent, z is the concentration of the suspension agent in the chemical composite driving agent, v is the volume of the first stirring tank 41 or the second stirring tank 42, and ρ is the overall density of the chemical composite driving agent. In addition, the concentration of the polymer powder in the chemical composite driving agent ranges from 0.1% to 0.3%; the concentration range of the liquid viscosity reducer in the chemical compound flooding agent is 0.5% -1.0%; the concentration of the suspension agent in the chemical compound flooding agent is in the range of 5-20%.
In the first embodiment of the present invention, the effective concentrations of the polymer powder, the liquid viscosity-reducing agent and the suspension agent are all set to 100%. Therefore, the content of the polymer powder was 0.2% (x was 0.2%) in the total content of the chemical compound driving agent, the content of the liquid viscosity-reducing agent was 0.8% (y was 0.8%) in the total content of the chemical compound driving agent, and the content of the suspension agent was 10% (z was 10%) in the total content of the chemical compound driving agent. In addition, the density of the chemical compound flooding agent is 1g/cm 3 (ρ is 1g/cm 3 ) The method comprises the steps of carrying out a first treatment on the surface of the The volume of the first stirring tank 41 or the second stirring tank 42 is 10m 3 (v is 10m 3 ). Thus, the control means 60 gave an actual delivery amount of 20kg of the polymer powder, 80L of the liquid viscosity-reducing agent, and 1000L of the suspension agent.
In the second embodiment of the present invention, the specific flow of the mixing process (this process is exemplified by the preparation in the first agitation tank 41) is described based on the values in the first embodiment as described above:
first, the stirring function of the first stirring tank 41 is started.
Then, the third metering pump 32 is started to quantitatively deliver 1000L of the suspension agent in the third tank 31 to the first agitation tank 41; starting the second metering pump 22 to quantitatively deliver 80L of the liquid viscosity reducing agent in the second tank 21 to the first stirring tank 41; the weighing feeder 14 is started to quantitatively deliver 20kg of the polymer powder in the first tank 11 to the vibration hopper 16, specifically, the polymer powder passes through the stirrer 13 and the weighing feeder 14 in this order to reach the vibration hopper 16. Further, the water from the injection line 70 is sent to the jet pump 15 by the first plunger pump 17, so that the polymer powder in the vibration hopper 16 is sufficiently absorbed, and the polymer powder is sufficiently mixed with the water in the jet pump 15 and then sent to the first agitation tank 41 together.
Thereafter, the water from the injection line 70 is continuously fed to the first agitation tank 41 by the first plunger pump 17 and measured in real time by the first level gauge 411 when the volume of the liquid is raised to 1.5m 3 At this time, the first plunger pump 17, the agitator 13, the weigh feeder 14, and the vibration hopper 16 are turned off.
After that, the first agitation tank 41 was subjected to liquid level compensation by the second plunger pump 71 and measured in real time by the first liquid level meter 411 when the volume of the liquid increased to 10m 3 At this time, the second plunger pump 71 is turned off.
Finally, the first stirring tank 41 continues stirring for 1 hour, thereby obtaining a formulated chemical compound flooding agent.
It is to be understood that the specific flow of the compounding process of the first agitation tank 41 and the second agitation tank 42 is identical, and thus, a repeated description will not be given.
In a third embodiment of the present invention, the injection process of the chemical compound flooding agent is described based on the first and second embodiments described above:
first, the required injection flow rate of the oil well is set to be 48m 3 And/d, preparing the chemical compound flooding agent according to the procedure of the second embodiment, wherein the first stirring tank 41 and the second stirring tank 42 are filled with the chemical compound flooding agent.
Then, the third plunger pump 80 is connected to the first agitation tank 41, and the chemical compound flooding agent in the first agitation tank 41 is injected into the oil well by the third plunger pump 80. At this time, the chemical compound flooding agent is controlled by the control mechanism 60 to be always 2m 3 The flow rate/h flows to the well (the flow rate of the chemical complex drive agent is measured in real time by the flow meter 81 as described above).
Finally, when the injection pressure value measured by the pressure gauge 2 is greater than the set value, the pressure gauge 2 gives an alarm signal to the control mechanism 60. The control mechanism 60 continuously measures the liquid level of the first agitation tank 41 by the first liquid level meter 411, and when the liquid level value measured by the first liquid level meter 411 is lower than the set value (when the first agitation tank 41 is empty by default), disconnects the third plunger pump 80 from the first agitation tank 41 to connect the third plunger pump 80 to the second agitation tank 42, and injects the chemical compound flooding agent in the second agitation tank 42 into the oil well by the third plunger pump 80.
It is easy to understand that when the third plunger pump 80 is disconnected from the first agitation tank 41 and the third plunger pump 80 is connected to the second agitation tank 42, the first agitation tank 41 is connected to the channel member 50 and a new round of chemical compound flooding agent is prepared in accordance with the procedure in the second embodiment. In this way, the first agitation tank 41 and the second agitation tank 42 can alternately and continuously deliver the chemical compound flooding agent prepared to the oil well.
In the fourth embodiment of the present invention, a specific flow of the self-cleaning process (this process is exemplified by cleaning in the first agitation tank 41) is described based on the values in the first embodiment as described above:
first, the stirring function of the first stirring tank 41 is started. The vibration hopper 16 and the jet pump 15 are started, and water is injected into the first agitation tank 41 by the first plunger pump 17, so that the vibration hopper 16, the jet pump 15, and the channel member 50 are sufficiently cleaned. When the liquid volume in the first agitation tank 41 measured by the first liquid level gauge 411 reaches 5m 3 At this time, the vibration hopper 16, the jet pump 15 and the first plunger pump 17 are turned off.
Then, water is injected into the first agitation tank 41 by the second plunger pump 71. When the liquid volume in the first agitation tank 41 measured by the first liquid level gauge 411 reaches 10m 3 At this time, the second plunger pump 71 is turned off.
Finally, the first agitation tank 41 continues agitation for 30 minutes, and then is injected into the oil well by the third injection pump 80. The third injection pump 80 is turned off when the level value of the first level gauge 411 is lower than the set value during injection.
It is easy to understand that the cleaning process performed in the first agitation tank 41 is identical to the cleaning process performed in the second agitation tank 42, and thus, a repetitive description will not be made.
According to the integrated device 100 for online compounding and injection of the chemical compound flooding agent system, the compounding module and the injection module can be integrally operated, and the chemical compound flooding agent formed by mixing a plurality of different types of raw materials can be prepared. Compared with the device with single applicable object in the prior art, the invention has better compatibility. In addition, because the device can carry out automatic production and control, the labor such as manual metering and manual transportation is effectively reduced, and the labor cost of enterprises is further reduced. In addition, the device also has a self-cleaning process, thereby effectively reducing the labor cost and saving time and labor.
The above is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto. Modifications and variations may readily be made by those skilled in the art within the scope of the present disclosure, and such modifications and variations are intended to be included within the scope of the present invention. Therefore, the protection scope of the invention is subject to the protection scope of the claims.
Claims (10)
1. An integrated device (100) for on-line compounding and injection of a chemical compound flooding agent system, characterized by comprising:
-a first injection unit (10), said first injection unit (10) comprising a first tank (11) for containing a powder agent, a weigh feeder (14) connected to said first tank (11), and an injection mechanism (12) for guiding the powder agent from said weigh feeder (14);
a second injection unit (20), the second injection unit (20) comprising a second tank (21) for containing a liquid viscosity reducing agent, and a second metering pump (22) connected to the second tank (21);
a third injection unit (30), the third injection unit (30) comprising a third tank (31) for containing a suspension agent, and a third metering pump (32) connected to the third tank (31),
the first end of the mixing unit (40) is communicated with the first injection unit (10), the second injection unit (20) and the third injection unit (30) through a channel piece (50), the second end of the mixing unit (40) is connected with an oil well through an injection port (1),
control means (60) connected to said weighing feeder (14), said injection means (12), said second metering pump (22), and said third metering pump (32),
wherein the control mechanism (60) is configured to control the flow of reagent to the compounding unit (40) from the first tank (11), the second tank (21) and the third tank (31); the compounding unit (40) is configured to be able to mix and deliver reagents to the well through the injection port (1).
2. The integrated device for the online compounding and injection of chemical compound flooding agent systems according to claim 1, characterized in that the first injection unit (10) further comprises a stirrer (13) arranged between the first tank (11) and the weighing feeder (14) and used for guiding the powdery agent, wherein the stirrer (13) is connected with the control mechanism (60).
3. The integrated device for online compounding and injection of chemical compound flooding agent systems according to claim 2, characterized in that said injection mechanism (12) comprises a jet pump (15), a vibrating hopper (16) communicating said weighing feeder (14) with a first end of said jet pump (15); and a first plunger pump (17) connected to a second end of the jet pump (15), wherein a third end of the jet pump (15) is connected to the mixing unit (40) via the channel element (50).
4. The integrated device for online mixing and injection of chemical compound flooding agent system according to claim 3, wherein the mixing unit (40) comprises a first stirring tank (41) and a second stirring tank (42), wherein a first liquid level meter (411) is arranged on the first stirring tank (41), a second liquid level meter (421) is arranged on the second stirring tank (42), and the first liquid level meter (411) and the second liquid level meter (421) are both connected with the control mechanism (60).
5. The integrated device for online compounding and injection of chemical compound flooding agent system according to claim 4, characterized in that the first stirring tank (41) and the second stirring tank (42) are distributed in parallel, and the channel member (50) is selectively connected with the first stirring tank (41) and the second stirring tank (42).
6. The integrated device for online compounding and injection of a chemical compound flooding agent system according to claim 5, characterized in that the integrated device (100) for online compounding and injection of a chemical compound flooding agent system further comprises an injection line (70) connected with an external water source, and a second plunger pump (71), wherein the injection line (70) is connected with the first plunger pump (17) and the injection port (1), respectively, a first end of the second plunger pump (71) is connected with the injection line (70), and a second end of the second plunger pump (71) is connected with the channel member (50).
7. The integrated device for online mixing and injection of a chemical compound drive agent system according to claim 6, wherein the integrated device (100) for online mixing and injection of a chemical compound drive agent system further comprises a third plunger pump (80) arranged between the mixing unit (40) and the injection port (1), and a flow meter (81) connected with the third plunger pump (80), the flow meter (81) is connected with the control mechanism (60), and the third plunger pump (80) is selectively connected with the first stirring tank (41) and the second stirring tank (42).
8. An integrated method of online compounding and injection of a chemical compound flooding agent system, the method being performed by an integrated device (100) of online compounding and injection of a chemical compound flooding agent system according to any one of claims 1 to 7, comprising the steps of:
s1, respectively filling a powder agent, a liquid viscosity reducing agent and a suspension agent into the first tank body (11), the second tank body (21) and the third tank body (31), and calculating to obtain output parameters of all materials through the control mechanism (60);
s2, starting the first stirring tank (41) and the second stirring tank (42);
s3, conveying the suspension agent into the first stirring tank (41) and the second stirring tank (42) through the channel piece (50) by the third injection unit (30) according to the output parameter in S1; the second injection unit (20) conveys the liquid viscosity reducing agent into the first stirring tank (41) and the second stirring tank (42) according to the output parameter in S1; the first injection unit (10) conveys the powder agent into the first stirring tank (41) and the second stirring tank (42) according to the output parameters in S1;
s4, the liquid from the injection pipeline (70) is sequentially conveyed into the first stirring tank (41) or the second stirring tank (42) through the first plunger pump (17) and the jet pump (15), and at the moment, the liquid in the first stirring tank (41) or the second stirring tank (42) is separated from the tank by 1-2m 3 ；
S5, conveying the liquid from the injection pipeline (70) into the first stirring tank (41) or the second stirring tank (42) through the second plunger pump (71) to perform liquid level compensation, and alternately mixing the liquid in the first stirring tank (41) and the liquid in the second stirring tank (42) so as to obtain a mixed chemical compound flooding agent;
s6, the first stirring tank (41) and the second stirring tank (42) alternately inject the mixed chemical compound driving agent into an oil well through the second plunger pump (71) and the injection port (1).
9. The integrated method for online compounding and injection of a chemical composite flooding agent system according to claim 8, comprising:
the powder agent required by single liquid preparation is V.rho.x; the viscosity reducing amount required by single liquid preparation is V.y; the suspension dosage is V.z; wherein x is the concentration of the powder agent, y is the concentration of the viscosity reducing agent, z is the concentration of the suspending agent, V is the volume of the first stirring tank (41) or the second stirring tank (42), and ρ is the overall density of the chemical compound driving agent system.
10. A self-cleaning method for an integrated device for on-line compounding and injection of a chemical compound flooding agent system according to any one of claims 1 to 7, the method comprising the steps of:
firstly, liquid from the injection pipeline (70) is injected into the first stirring tank (41) and the second stirring tank (42) through the first plunger pump (17) and the jet pump (15) in sequence, and the liquid occupies 1/2 of the volume of the first stirring tank (41) and the second stirring tank (42) respectively;
then, the liquid from the injection line (70) is injected into the first stirring tank (41) and the second stirring tank (42) by the second plunger pump (71) and stirred for 30min, at this time, the liquid fills the inner cavities of the first stirring tank (41) and the second stirring tank (42), and the stirred liquid is injected into the oil well by the third plunger pump (80) and the injection port (1);
finally, the liquid from the injection line (70) is injected into the first stirring tank (41) and the second stirring tank (42) again through the second plunger pump (71) and stirred, at this time, the liquid fills the inner cavities of the first stirring tank (41) and the second stirring tank (42), and the stirred liquid is injected into the oil well through the third plunger pump (80) and the injection port (1).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210545340.7A CN117123110A (en) | 2022-05-19 | 2022-05-19 | Integrated device and method for online mixing and injection of chemical compound flooding agent system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210545340.7A CN117123110A (en) | 2022-05-19 | 2022-05-19 | Integrated device and method for online mixing and injection of chemical compound flooding agent system |
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| CN117123110A true CN117123110A (en) | 2023-11-28 |
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| CN202210545340.7A Pending CN117123110A (en) | 2022-05-19 | 2022-05-19 | Integrated device and method for online mixing and injection of chemical compound flooding agent system |
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| CN (1) | CN117123110A (en) |
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