CN109323981A - Experimental system and experimental method for the aqueous corrosion experiment that is carbonized - Google Patents

Abstract

The embodiment of the present invention provides a kind of experimental system and experimental method for the aqueous corrosion experiment that is carbonized, and is related to comprising carbonization water field.The experimental system includes: carbonization hydrodynamic(al) state etching system comprising reaction kettle and the blender being arranged in reaction kettle and the fixation device for fixing laboratory sample；Control pressurer system, including pressure detecting module and pressure adjusting module, are connected with reaction kettle respectively, for detecting and adjusting the pressure inside reaction kettle；Processing module is connected with control pressurer system, for the pressure and preset pressure inside reaction kettle based on the received, pressure adjusting module work is controlled, to adjust the pressure inside reaction kettle.The technical solution provided through the invention, utilize the reaction kettle with blender, the experimental study for the carbonization aqueous solution Dynamic Corrosion adapted under China's nontraditional reservoir physical property and reservoir condition can be unfolded, reference experiment is provided for development plan as a result, the material for field mining equipment provides suitable suggestion.

Description

Experimental system and experimental method for the aqueous corrosion experiment that is carbonized

Technical field

The present invention relates to containing carbonization water field, more particularly to it is a kind of for be carbonized aqueous corrosion experiment experimental system and Experimental method for the aqueous corrosion experiment that is carbonized.

Background technique

As main force's oil reservoir of exploitation has turned to unconventional LOW PERMEABILITY RESERVOIR, ultralow permeable reservoir and cause by conventional high permeability reservoir Close oil reservoir, the technology of the common raising recovery ratio by water filling or gas injection, which has been unable to meet, to be significantly improved nontraditional reservoir and adopts The needs of yield.And the water drive that is carbonized is (dissolved with a certain amount of CO₂The aqueous solution of gas) a kind of side as novel raising recovery ratio Method improves recovery ratio function and effect to oil reservoir and is substantially better than the conventional function and effect for improving recovery ratio method, and CO₂Gas The utilization of body additionally aids alleviation greenhouse effects, and therefore, carbonization water drive improves recovery efficiency technique as nontraditional reservoir is novel and mentions The popularization and application of high recovery rate technology are very necessary.

But when Oil Field application carbonization water drive improves recovery ratio method, the water that is carbonized is to underground equipment, pipeline and storage The corrosion of layer rock is the problem of can not be ignored.The water that is carbonized can be physico with the generation of petroleum, water flooding and rock after injecting stratum Reaction is learned, and then changes reservoir properties.

Chinese nontraditional reservoir reservoir properties are poor, heterogeneity is strong and microcrack is developed, therefore, it is necessary to the water that is clearly carbonized What fluid has influence the physical parameter of nontraditional reservoir reservoir, to propose to be suitble to the carbonization water of different type oil reservoir to improve Recovery efficiency technique.

Furthermore when the water that is carbonized is contacted with underground equipment pipeline, the corrosion of oil pipe and pipeline is easily caused, causes to adopt defeated system System and infrastructure is premature fails.The accident for causing oil well tube failure because of corrosion can all occur every year, so that originally Zones and surface areas for joint exploration and exploitation need the economic loss outside commitment, moreover, for the normal production for the well that resumes production, subsequent well workover is made The events in operation such as industry can also spend substantial contribution and time.

Therefore, if clearly understanding carbonization aqueous solution just can not be to the corrosion regularity of underground equipment pipeline not in time The normal production in oil field provides safeguard, and cannot achieve the cost efficiency under the new normality of enterprise.

Up to the present, the prior art improves recovery efficiency technique to reservoir rock physical property ginseng using carbonization water drive to related The research of several and underground equipment pipeline dynamic behaviour is substantially blank, can not instruct the corrosion and protection of Oil Field, this Sample influences the normal production and safety in oil field very much.During exploiting oil reservoir, equipment and pipeline are often in high temperature and pressure ring Border, and state of the aqueous solution that is carbonized in dynamic flowing in equipment and pipeline, these factors all can be rotten to carbonization aqueous solution Erosion subsurface equipment pipe line velocity has certain facilitation, and exacerbates the formation of corrosion default.

However present inventor has found, there is no the high temperature and pressure dynamic streams for carbonization aqueous solution in the prior art Corrosion experiment system under dynamic complex environment can not simulate carbonization water drive scene corrosive environment.Secondly, injection carbonization For aqueous solution to stratum reservoir properties, what adverse effect production rate has indefinite, shadow of the carbonization aqueous solution to reservoir physical parameter It is unclear to ring mechanism understanding.

Summary of the invention

The purpose of the embodiment of the present invention is that a kind of experimental system and experimental method for the aqueous corrosion experiment that is carbonized is provided, By using the experimental system and experimental method, can be unfolded under adaptation China's nontraditional reservoir physical property and reservoir condition Carbonization aqueous solution Dynamic Corrosion experimental study.

To achieve the goals above, the embodiment of the present invention provides a kind of experimental system for the aqueous corrosion experiment that is carbonized, institute Stating experimental system includes: carbonization hydrodynamic(al) state etching system, and the carbonization hydrodynamic(al) state etching system includes that reaction kettle and setting exist Blender in the reaction kettle and the fixation device for fixing laboratory sample；Control pressurer system, including pressure detecting mould Block and pressure adjusting module are connected with the reaction kettle respectively, for detecting and adjusting the pressure inside the reaction kettle； And processing module, it is connected with the control pressurer system, for the pressure inside the reaction kettle based on the received and in advance If pressure, the pressure adjusting module work is controlled, to adjust the pressure inside the reaction kettle.

Optionally, the experimental system further include: carbonization water preparation system is used to prepare carbonization aqueous solution and will prepare The carbonization aqueous solution of completion is sent to the reaction kettle, and the carbonization water preparation system includes: that carbonization water prepares container, described Prepared by carbonization water have piston and blender inside container；And constant speed and constant pressure pump, with the processing module and the carbonization water It prepares container to be connected, injects quantitative liquid for preparing the piston lower portion in container to the carbonization water, described in pushing Piston action certain distance, the control pressurer system prepares container with the carbonization water and is connected, for detecting and adjusting institute It states carbonization water and prepares pressure inside container, wherein the processing module is also used to execute following operation: institute based on the received It states carbonization water and prepares pressure and preset pressure inside container, the pressure adjusting module work is controlled, to adjust the carbon Change water and prepares the pressure inside container；And the amount according to the preset carbonization aqueous solution for participating in carbonization aqueous corrosion experiment, control The constant speed and constant pressure pump work, to adjust the amount that the carbonization water prepares the carbonization aqueous solution of container submitting.

Optionally, the experimental system further include: gasometry injected system, for will be maintained at certain process stage Under CO₂Gas send to the carbonization water and prepares in container, and the gasometry injected system includes: CO₂Container is quantitatively injected, The CO₂Quantitatively there is piston inside injection container；And constant speed and constant pressure pump, with the processing module and the CO₂Quantitative note Enter container to be connected, be used for the CO₂Quantitative liquid is injected under the piston quantitatively injected in container, to push the piston Act certain distance, the control pressurer system and the CO₂Quantitatively injection container is connected, described for detecting and adjusting CO₂Quantitatively inject the pressure inside container, wherein the processing module is also used to execute following operation: described based on the received CO₂The pressure and preset pressure inside container are quantitatively injected, the pressure adjusting module work is controlled, to adjust the CO₂ Quantitatively inject the pressure inside container；And the CO according to preset parameter and carbonization aqueous corrosion experiment₂The amount of gas, control The constant speed and constant pressure pump work, to adjust the CO₂The quantitatively CO that injection container is sent out₂The amount of gas.

Optionally, the experimental system further include: gas pressurization system is used for the CO₂The pressure increase of gas is extremely The gasometry injected system is sent to after preset value, the gas pressurization system includes: CO₂Gas tank is connected with booster pump It connects, for storing CO₂Gas；Air compressor and booster pump, for the CO for entering the booster pump₂Gas is pressurized； And high pressure storage tank, it is connected with the booster pump, for storing pressurized CO₂Gas.

Optionally, the experimental system further include: waste collection system is connected with the carbonization hydrodynamic(al) state etching system It connects, for collecting the waste liquid after participating in reaction, the waste collection system includes: liquid waste collector, is passed through with the reaction kettle Pipeline is connected, for collecting the waste liquid generated after the carbonization aqueous corrosion experiment of the participation in the reaction kettle；And switch Valve is connected in the pipeline.

Optionally, the experimental system further include: shell removes the shell and the processing mould in the experimental system Other equipment except block are comprised in the shell, and temperature detecting module and temperature control are additionally provided in the shell Module, is respectively used to detect and regulate and control the intracorporal environment temperature of the shell, the processing module according to preset environment temperature and The environment temperature of the temperature detecting module detection works to control the temperature control modules, to adjust the experimental system Interior temperature.

Correspondingly, the embodiment of the invention also provides a kind of experimental method for the aqueous corrosion experiment that is carbonized, the method It include: the flow for the carbonization aqueous solution that control flows into reaction kettle so that the carbonization aqueous solution did not had in the reaction The laboratory sample of fixation in kettle；The blender movement inside the reaction kettle is controlled, so that the carbonization aqueous solution is in dynamic State flow regime；And control control pressurer system adjusts the pressure inside the reaction kettle, so that inside the reaction kettle Pressure reaches preset pressure.

Optionally, the experimental method further include: the pressure inside carbonization water preparation system maintains the default pressure In the case where power, by simulated formation aqueous solution and a certain amount of CO₂Gas mixing is at certain density carbonization aqueous solution.

Optionally, the experimental method further include: corrosion inhibiter is added in the simulated formation aqueous solution, to prepare Carbonization aqueous solution with corrosion inhibiter.

Optionally, the experimental method further include: by CO₂After the pressure increase to preset value of gas, quantitative feeding institute State carbonization water preparation system.

Optionally, the experimental method further include: remove the laboratory sample after carbonization aqueous corrosion experiment The corrosion product of generation；And determine that the laboratory sample removes the weight after the corrosion product.

Optionally, the laboratory sample is metal testing plate, the experimental method further include determine according to the following formula it is described The corrosion rate of metal testing plate:Wherein, A_CIndicate the average corrosion rate of metal testing plate, Δ W indicates average weightlessness of the metal testing plate before and after corrosion experiment, and S indicates that the area of metal testing plate, t indicate etching time, ρ table Show the density of metal testing plate.

Optionally, the laboratory sample is rock core, and the experimental method further includes determining the carbonization according to the following formula Permeability damage rate of the aqueous solution to reservoir:Wherein, D_KIndicate carbonization aqueous solution to reservoir Permeability damage rate,The arithmetic mean of instantaneous value of core permeability before expression carbonization aqueous corrosion,Indicate that carbonization is water-soluble The arithmetic mean of instantaneous value of core permeability after corrosion.

Optionally, the experimental method further include: temperature is controlled according to preset environment temperature and the environment temperature of detection Module work is spent, so that carbonization aqueous corrosion experiment carries out under the conditions of preset temperature.

Correspondingly, the embodiment of the present invention also provides a kind of machine readable storage medium, deposited on the machine readable storage medium Instruction is contained, the instruction is for the application is described in any item among the above to be used to be carbonized what aqueous corrosion was tested so that machine executes Experimental method.

Above-mentioned technical proposal through the invention can be simulated under true production circumstances, different temperatures, different oil reservoirs Under the conditions of pressure, the water-soluble liquid hold-up of different carbonizations and different time, the dynamic carbonization aqueous solution of flowing is to oil field equipment and pipe The corrosion condition of line.

Using technical solution provided by the invention, carbonization water drive oil can also be determined the use of in the process to reservoir properties shadow Loud changing rule can be according to practical condition, for oil according to the identified changing rule influenced on reservoir properties Field scene provides reference experiment result when formulating or adjusting development plan.

Using technical solution provided by the invention, the carbonization aqueous solution of various concentration and state can also be tested to metal The corrosion rate of material makes evaluation according to test result, provides suitable suggestion for the material of field mining equipment, with drop Low production cost, and ensure that oil field is normally kept the safety in production.

The other feature and advantage of the embodiment of the present invention will the following detailed description will be given in the detailed implementation section.

Detailed description of the invention

Attached drawing is to further understand for providing to the embodiment of the present invention, and constitute part of specification, under The specific embodiment in face is used to explain the present invention embodiment together, but does not constitute the limitation to the embodiment of the present invention.Attached In figure:

Fig. 1 is the structural schematic diagram of carbonization hydrodynamic(al) state etching system provided in an embodiment of the present invention；

Fig. 2 is the structural schematic diagram of carbonization water preparation system provided in an embodiment of the present invention；

Fig. 3 is the structural schematic diagram of gasometry injected system provided in an embodiment of the present invention；

Fig. 4 is the structural schematic diagram of gas pressurization system provided in an embodiment of the present invention；

Fig. 5 is the structural schematic diagram of waste collection system provided in an embodiment of the present invention；

Fig. 6 is the structural schematic diagram of the experimental system provided in an embodiment of the present invention for the aqueous corrosion experiment that is carbonized；

Fig. 7 is the flow chart of the experimental method provided in an embodiment of the present invention for the aqueous corrosion experiment that is carbonized.

Specific embodiment

It is described in detail below in conjunction with specific embodiment of the attached drawing to the embodiment of the present invention.It should be understood that this Locate described specific embodiment and be merely to illustrate and explain the present invention embodiment, is not intended to restrict the invention embodiment.

The embodiment of the present invention provides a kind of experimental system for the aqueous corrosion experiment that is carbonized comprising: carbonization hydrodynamic(al) state is rotten Erosion system, the carbonization hydrodynamic(al) state etching system include reaction kettle and the blender being arranged in the reaction kettle and are used for The fixation device of fixed laboratory sample；Control pressurer system, including pressure detecting module and pressure adjusting module, respectively with institute It states reaction kettle to be connected, for detecting and adjusting the pressure inside the reaction kettle；And processing module, with the pressure control System processed is connected, and for the pressure and preset pressure inside the reaction kettle based on the received, controls the pressure and adjusts mould Block work, to adjust the pressure inside the reaction kettle.

Wherein, it is connected between the reaction kettle, pressure detecting module and pressure adjusting module by pipeline.

Optionally, the fixed device is the equipment that clamper etc. is capable of fixing the laboratory sample.

Optionally, the pressure detecting module is the equipment that pressure gauge etc. can detecte container internal pressure.

Optionally, the pressure control module is the equipment of the adjustable container internal pressures such as backpressure pump and back-pressure valve.

Optionally, the processing module can for general processor, application specific processor, conventional processors, at digital signal It manages device (DSP, Digital Signal Processing), multi-microprocessor, micro- with the associated one or more of DSP core Processor, controller, microcontroller, other any kind of integrated circuits (IC, Integrated Circuit), state machine Etc.

The embodiment of the invention provides a kind of specific structure of hydrodynamic(al) state etching system that is carbonized, structural schematic diagram such as Fig. 1 It is shown.The carbonization hydrodynamic(al) state etching system include: switch valve I 101, laboratory sample 102, clamper 103, blender 104, Reaction kettle 105, switch valve II 106, back-pressure valve 107, back pressure container 408 and backpressure pump 409.

As shown in Figure 1, there are two nozzles for the tool of reaction kettle 105, connected at the nozzle above reaction kettle 105 by pipeline There is switch valve I 101, aqueous solution is injected into the reaction kettle 105 for that will be carbonized, and is led at the nozzle below reaction kettle 105 It crosses pipeline and is connected with switch valve II 106, back-pressure valve 107, back pressure container 108 and backpressure pump 109 in turn, connect on the pipeline It is connected to pressure gauge, to detect the pressure inside the reaction kettle 105 in carbonization hydrodynamic(al) state etching system.

Wherein, back-pressure valve 107, back pressure container 108 and backpressure pump 109 collectively constitute a pressure adjusting module, using return Press pump 109 presses to back pressure container 108, and sets pressure by back-pressure valve 107, may be implemented rotten to carbonization hydrodynamic(al) state Being precisely controlled for the pressure of internal system is lost, to meet requirement of experiment.

Wherein, the bottom of reaction kettle 105 is integrated with blender 104, is mainly used for water-soluble to the carbonization in reaction kettle 105 Liquid carries out Stirring, so that the carbonization aqueous solution is in dynamic flow regime, realizes the true item of simulation oil field produced on-site Dynamic Corrosion situation under part, such as the corrosion feelings of oil field equipment tubing or reservoir rock under the aqueous fluid flows state that is carbonized Condition.

Optionally, the mixing speed of the blender 104 is adjustable.By adjusting the speed of blender 104, realize Simulate the corrosion condition of the oil field equipment tubing or reservoir rock under multiple and different production statuses such as halt production, stable yields.Such as The range of speeds of the blender 104 can be 0~1000r/min.

Optionally, the specification of the reaction kettle 105 and the specification of clamper etc. can be by users according to actual experiment feelings Condition is selected.For example, the reaction kettle 105 can be made of the erosion-resisting 316L stainless steel of high temperature high voltage resistant, inside and outside multilayer The spraying of corrosion resistant PFA Teflon, external diametrical extent can be 60mm to 100mm, and inside diameter ranges can be 50mm to 90mm, length model It encloses and can be 380mm to 420mm, volume range can be 1000ml to 2000ml, such as outer diameter is 80mm, and internal diameter is 70mm, length 400mm, volume 1500ml, highest pressure resistance is up to 60MPa.Hermetically sealed material inside reaction kettle 105 Material is needed using resistance to CO₂Sealing material prevents the CO being dissolved in carbonization water₂Gas outwardly loss can maintain carbonization water The concentration of solution.Clamper 103 is mounted on the inside of the reaction kettle 105, and selected clamper 103 is adjustable size, The laboratory sample (such as metal testing plate or rock core) that multiple diameters are 25~30mm specification can be clamped.

Specifically, carrying out the process of carbonization aqueous corrosion experiment using carbonization hydrodynamic(al) state etching system shown in FIG. 1 are as follows:

Firstly, the kettle cover of reaction kettle 105 is first opened, according to requirement of experiment by several laboratory samples (metal testing plate or rock The heart) it is fixed using clamper 103, kettle cover is covered tightly after placing completion；

After confirming that switch valve II 106 and back-pressure valve 107 are in running order, then valve I 101 is turned on the switch, so that preparing The carbonization aqueous solution with certain pressure through switch valve I 101 flow into reaction kettle 105 in, when carbonization aqueous solution do not had it is whole After laboratory sample, valve I 101 is turned off the switch, recycles backpressure pump 109 to press back pressure container 108, and according to back pressure The pressure that valve 107 is set, realization are adjusted (for example, detecting in reaction kettle 105 pressure inside the reaction kettle In the case that the pressure in portion is no more than pressure needed for experiment, back-pressure valve 107 is in close state, and is detecting reaction kettle In the case where pressure needed for pressure inside 105 is greater than experiment, back-pressure valve 107 is automatically opened, and realizes pressure release), to meet not With container internal pressure needed for experiment, and the pressure inside reaction kettle 105 is maintained, prevented due to inside reaction kettle 105 Pressure decline caused by carbonization aqueous solution in CO₂Gas evolution；

Start blender 104, blender 104 is arranged according to dynamic flow regime needed for carbonization aqueous corrosion experiment Revolving speed, carbonization aqueous solution flow under the action of blender 104, start to corrode laboratory sample 102；

Terminate carbonization aqueous corrosion experiment, utilization while turning on the switch valve II 106 after the experimental period for reaching required Back pressure control system (back-pressure valve 107, back pressure container 108 and backpressure pump 109) carries out pressure release to reaction kettle 105, and pressure release terminates Afterwards, by the waste liquid after the reaction in reaction kettle 105 by being discharged after switch valve II 106.

Optionally, the experimental system provided in an embodiment of the present invention for the aqueous corrosion experiment that is carbonized further includes and carbonization water The carbonization water preparation system that Dynamic Corrosion system is connected is used to prepare carbonization aqueous solution, and the carbonization that preparation is completed is water-soluble Liquid is sent to reaction kettle 105.

The embodiment of the invention also provides a kind of specific structure of water preparation system that is carbonized, structural schematic diagram such as Fig. 2 institutes Show.The carbonization water preparation system includes switch valve 201, carbonization water prepares container 202, constant speed and constant pressure pumps 203, back-pressure valve 204 With backpressure pump 205.

As shown in Fig. 2, carbonization water prepares nozzle there are two the tools of container 202, it is connected at one of nozzle by pipeline Switch valve 201, can be by CO by the switch valve 201₂Gas is injected into carbonization water and prepares in container 202, another nozzle Back-pressure valve 204 and backpressure pump 205 are connected in turn by pipeline, is connected with pressure gauge on the pipeline, to detect the carbon Change water and prepare the pressure inside container 202, is connected in the lower end that carbonization water prepares container 202 with constant speed and constant pressure pump 203, it is permanent Fast constant pressure pump 203 is connected with a container equipped with liquid, prepares container 202 to carbonization water by constant speed and constant pressure pump 203 Quantitative liquid is injected in bottom, and the carbonization water is pushed to prepare the piston motion in container 202.In addition, back-pressure valve 204 and return Press pump 205 collectively constitutes back pressure control system, realizes and prepares being precisely controlled for the pressure inside container 202 to carbonization water, with dimension Hold container internal pressure needed for carrying out carbonization aqueous corrosion experiment.

Wherein, piston prepares the inside of container 202 in carbonization water, is integrated with blender on the top of the piston, is used for It prepares the carbonization aqueous solution in container 202 to carbonization water to be stirred, so that the injection carbonization water is prepared in container 202 CO₂Gas is sufficiently mixed with aqueous solution.

Optionally, it can be connected, and be in communication with each other by RS485 bus between constant speed and constant pressure pump 203 and processing module.

Optionally, carbonization water prepare container 202 specification and constant speed and constant pressure pump 203 model can be by user according to reality The specific requirement tested selects.

For example, carbonization water prepares container 202 and can be made of the erosion-resisting 316L stainless steel of high temperature high voltage resistant, it is inside and outside more The corrosion-resistant PFA Teflon spraying of layer, external diametrical extent can be 70mm to 110mm, and inside diameter ranges can be 60mm to 100mm, long Degree range can be 380mm to 420mm, and volume range can be 1500ml to 2500ml, such as outer diameter is 90mm, and internal diameter is 80mm, length 400mm, volume 2000ml, highest pressure resistance is up to 50MPa.Piston preferably uses resistance to CO₂Sealing material, It can prepare in container 202 and move up and down in carbonization water.In the top integrated stirrer of piston, for driving carbonization water preparation Carbonization aqueous solution in container 202 carries out Stirring to mix them thoroughly, and the speed of blender is electrodeless adjustable, Ke Yishe It sets in 0~1000r/min.The model of constant speed and constant pressure pump 203 is preferably HAS-200HSB, the list of the constant speed and constant pressure pump of the model Cylinder volume is 200ml, and range of flow is 0.01~20ml/min, and flow accuracy can achieve 0.01ml, and operating pressure is 60MPa, constant speed and constant pressure pump 203 is mainly used for providing power for piston so that piston can act, can continuous acrotism Punching circulation, and can also constant speed, the work of constant pressure.And the constant speed and constant pressure pump 203 of the model has accurate measurement, precision There is high advantage pressure protection and position bound to protect, and pump head material uses 316L stainless steel, has suction, drain The function being pressurized in advance, reversal valve use solenoid valve control pneumatic operated valve.

Specifically, carrying out the detailed process of carbonization aqueous solution preparation using carbonization water preparation system shown in Fig. 2 are as follows:

Firstly, first opening the top cover that carbonization water prepares container 202, configured simulated formation aqueous solution is poured into Carbonization water is prepared in container 202, and the amount for pouring into the solution that the carbonization water prepares container 202 is determined by specific experiment demand, so Rear cover presses closer lid；

Switch valve 201 is then turned on, will be maintained at the CO of certain pressure₂It is gasometric to be slowly injected into carbonization water system In standby container 202, to configure the carbonization aqueous solution of various concentration, as the CO of injection₂Budget needed for the amount of gas reaches experiment After value, valve 201 is turned off the switch；

Using back-pressure valve 204 and backpressure pump 205, carbonization water is controlled according to requirement of experiment and prepares the pressure inside container 202 Power prevents CO in carbonization aqueous solution caused by preparing the pressure decline inside container 202 due to carbonization water₂Concentration changes；

With the blender of certain velocity of rotation starting top land, prepared by the liquid in container 202 to carbonization water and is carried out Certain density carbonization aqueous solution can be obtained to mix them thoroughly in Stirring；

203 work of constant speed and constant pressure pump is controlled again, and the piston motion in container 202 is prepared with control carbonization water, passes through setting Carbonization water is prepared the push-in pipeline of the carbonization aqueous solution in container 202 by certain flowing velocity, flows through back-pressure valve 201, backpressure pump 205, it can be collected into a certain amount of with certain density carbonization aqueous solution.

Optionally, the experimental system provided in an embodiment of the present invention for the aqueous corrosion experiment that is carbonized further includes and carbonization water The gasometry injected system that preparation system is connected, the CO for will be maintained under certain process stage₂Gas is sent to described Carbonization water is prepared in container.

The embodiment of the invention also provides a kind of specific structure of gasometry injected system, structural schematic diagram such as Fig. 3 It is shown.The gasometry injected system includes backpressure pump 301, back-pressure valve 302, switch valve 303, CO₂Quantitatively inject container 304 and constant speed and constant pressure pump 305.

As shown in figure 3, CO₂The upper end tool of container 304 is quantitatively injected there are two nozzle, passes through pipe at one of nozzle Line is connected with switch valve 303, is connected with pressure gauge on the pipeline, another nozzle by pipeline successively with back-pressure valve 302 It is connected with backpressure pump 301, is connected with pressure gauge on the pipeline, detects the CO₂Quantitatively inject inside container 304 Pressure, CO₂Lower end and the constant speed and constant pressure pump 305 for quantitatively injecting container 304 is connected, by the constant speed and constant pressure pump 305 to CO₂Quantitatively quantitative liquid is injected in injection 304 bottom of container, pushes the CO₂Quantitatively inject the piston motion in container.Separately Outside, backpressure pump 301 and back-pressure valve 302 collectively constitute back pressure control system, realize to CO₂Quantitatively inject the pressure inside container 304 Power is precisely controlled, so that CO₂Pressure value needed for the pressure of gas maintains experiment.

Wherein, piston is in CO₂Quantitatively inject the inside of container 304.

Optionally, it can be connected, and communicated with each other by RS485 bus between constant speed and constant pressure pump 305 and processing module.

Optionally, CO₂The model of the specification and constant speed and constant pressure pump 305 of quantitatively injecting container 304 can be by user according to reality The specific requirement tested selects.

For example, CO₂The external diametrical extent for quantitatively injecting container 304 can be 70mm to 110mm, and inside diameter ranges can be 60mm to 100mm, length range can be 380mm to 420mm, and volume range can be 1500ml to 2500ml, such as outer diameter For 90mm, internal diameter 80mm, length 400mm, volume 2000ml, highest pressure resistance is up to 50MPa.Piston preferably uses resistance to CO₂Sealing material, can be in CO₂Quantitatively move up and down in injection container 304.The model of constant speed and constant pressure pump 305 is preferably HAS- The single chamber volume of 200HSB, the constant speed and constant pressure pump of the model are 200ml, range of flow 0.01-20ml/min, flow accuracy Can achieve 0.01ml, operating pressure 60MPa, the constant speed and constant pressure pump 305 be mainly used for providing power for piston so that Piston can act, can continuous no pulse circulation, and can also constant speed, the work of constant pressure.And the constant speed and constant pressure of the model Pump 305 has accurate measurement, and the high advantage of accuracy there is pressure protection and position bound to protect, pump head material selection 316L stainless steel has the function of suction, drain and is pressurized in advance that reversal valve uses solenoid valve control pneumatic operated valve.

Specifically, will be maintained at the CO under certain process stage using gasometry injected system shown in Fig. 3₂Gas It send to the detailed process of next experimental facilities are as follows:

Firstly, valve 303 is first turned on the switch, so that the CO under maintaining certain process stage₂Gas passes through the switch Valve 303 flows into CO₂It quantitatively injects in container 304, in CO₂After gas injects, valve 303 is turned off the switch to prevent CO₂Gas Reflux；

Using backpressure pump 301 and back-pressure valve 302, CO is regulated and controled according to requirement of experiment₂Quantitatively inject the CO in container 304₂ The pressure of gas；

305 work of constant speed and constant pressure pump is controlled, to control CO₂The piston motion in container 304 is quantitatively injected, setting is passed through Certain flowing velocity is by CO₂Quantitatively inject the CO in container 304₂Gas is pushed into pipeline, flows through backpressure pump 301, back-pressure valve 302, so that the CO under maintaining certain process stage₂Gas can quantitatively into next experimental facilities.

Wherein, during configuring simulated formation aqueous solution, a certain amount of different types of inhibition can also be added Agent is alleviated the speed of laboratory sample corrosion with the different types of different amounts of corrosion inhibiter of determination, determines the effect of corrosion inhibiter, and Determine optimal dosage and optimal use condition.

Optionally, the experimental system provided in an embodiment of the present invention for the aqueous corrosion experiment that is carbonized further includes gas boosting System, for by the CO under normal pressure₂Gas increases to certain pressure (carrying out testing required preset pressure).

The embodiment of the invention also provides a kind of specific structure of gas pressurization system, structural schematic diagram such as Fig. 4 institutes Show.The gas pressurization system includes sequentially connected CO₂Gas tank 401, switch valve I 402, booster pump 403, solenoid valve 404, Air compressor 405, switch valve II 406, safety valve 407, high pressure storage tank 408 and pressure regulator valve 409.

As shown in figure 4, CO₂Switch valve I 402, booster pump 403 and high pressure are installed between gas tank 401 and booster pump 403 Switch valve II 406 is installed between storage tank 408, solenoid valve 404 is installed between booster pump 403 and air compressor 405, it is high It presses and safety valve 407 is installed at the pipeline of storage tank 408.That is CO₂Gas tank 401 is connect through switch valve I 402 with booster pump 403, empty Air compressor 405 is connected to booster pump 403 by solenoid valve 404.Switch valve II 406, safety valve 407,408 and of high pressure storage tank Pressure regulator valve 409 is connected to 403 back of booster pump in turn.And CO₂The pipeline of gas tank 401, high pressure storage tank 408 and pressure regulator valve 409 On be respectively mounted pressure gauge.

Optionally, the CO in this embodiment of the invention₂Gas tank 401, booster pump 403, air compressor 405 and high pressure storage The model and specification of the equipment such as tank 408 can voluntarily be selected by user according to experiment demand.

For example, CO₂Gas tank 401 can be the 4L aluminium alloy steel cylinder of charge pressure 15MPa.Switch valve I 402 and switch valve II 406 can be made of Hastelloy stainless steel.Booster pump 403 can use the double acting pressurization of model STW-02-A-L Pump is used for CO₂Gas boosting, the driving method of the booster pump are the driving of Ordinary Compression air, driving pressure is 0.4~ 0.6MPa, and without electric spark when work, pressure ratio 100:1, maximum outlet pressure is 600bar, maximum stream flow 40L/min. Solenoid valve 404 can be the explosion-proof solenoid valve of model DN1-DN800, and connection type is flanged joint.Air compressor 405 The oil-free mute air compressor of model HP-1800C can be used, the power of motor of the compressor of the model is 0.55KW, Ultimate vacuum pressure is -980mbar, metered flow 12.0m³/ h, noise grade are 60dB (A).Safety valve 407 is a kind of Overpressure protection apparatus can select the anticorrosive material spring micro-open type safety valve of model A41Y.High pressure storage tank 408 can be adopted It is made of 316L stainless steel, inside and outside multilayer corrosion resistant FPA teflon coatings, there is high temperature resistant, high pressure resistant and resistance to corrosion, most Big operating pressure is 60MPa, and volume may range from 1.5L to 2.5L.Regulating valve 409 can select high-precision pressure to adjust Device, maximum inlet pressure are 60MPa, and maximum outlet pressure is 50MPa.

Specifically, using gas pressurization system shown in Fig. 4 to CO₂Gas boosting to certain pressure value detailed process Are as follows:

Firstly, first turning on the switch valve I 402, it is stored in CO₂CO in gas tank 401₂Gas enters booster pump 403；

405 couples of the air compressor CO into booster pump 403₂Gas is pressurized, pressurized CO₂Gas is in switch valve Enter high pressure storage tank 408 under II 406 control；

Turn off the switch valve I 402, solenoid valve 404 and switch valve II 406, while adjusting pressure regulator valve 409 so that it is described from The CO exported in high pressure storage tank 408₂Preset pressure value needed for the pressure of gas maintains experiment.

Wherein, it when the pressure inside high pressure storage tank is higher than 60MPa or is higher than a preset pressure value, is mounted on described The safety valve 407 on the top of high pressure storage tank 408 would automatically turn on, and to reduce the pressure inside high pressure storage tank 408, guarantee experiment The safety of operator and equipment, prevent safety accident.

Optionally, the experimental system provided in an embodiment of the present invention for the aqueous corrosion experiment that is carbonized further includes waste collection System is connected, for collecting the waste liquid after participating in reaction with carbonization hydrodynamic(al) state etching system.

The embodiment of the invention also provides a kind of specific structure of waste collection system, structural schematic diagram such as Fig. 5 institutes Show.The waste collection system includes switch valve 501 and liquid waste collector 502.

As shown in figure 5, having a nozzle in the left end of liquid waste collector 502, there is switch valve 501 on pipeline, for collect from The waste reaction solution generated after the participation carbonization aqueous corrosion experiment flowed out in reaction kettle.

Specifically, collecting the detailed process of waste liquid using the waste collection system are as follows: first turn on the switch valve 501, react Waste liquid in kettle flows through switch valve 501, final all to flow into liquid waste collector 502.In order to keep liquid waste collector cleaning can With needing timing to topple over waste liquid in liquid waste collector 502.

In addition, in order to simulate the production environment of true Oil Field, it is provided in an embodiment of the present invention to be used for carbon The system for changing aqueous corrosion experiment, further includes temperature control system, for controlling the environment of other equipment in the experimental system Temperature.

Specifically, the experimental system includes a shell, the shell and the processing module are removed in the experimental system Except other equipment be contained in the shell, temperature detecting module and temperature control are additionally provided in the shell Molding block is respectively used to detect and regulate and control the intracorporal environment temperature of the shell, and the processing module is according to preset environment temperature It works with the environment temperature of temperature detecting module detection to control temperature control modules, to adjust the temperature in experimental system.

Optionally, the temperature control system can use thermostatic type electric heating case (abbreviation insulating box), by being mounted on Two high temperature circulation blower fans of top of the box push high temperature air to circulate, so that it is guaranteed that can be in insulating box without dead angle Be evenly heated.

Optionally, the parameters such as the size of the shell of thermostatic control system, the maximum temperature that can heat, are not fixed , it is subject to and can be realized carbonization aqueous corrosion experiment.

For example, it is 150 DEG C that heating maximum temperature, which can be set, control temperature, Ke Yishe are adjusted using PID control principle Temperature-controlled precision is set at ± 1 DEG C or so.The size of shell can be 1500*800*750mm (long * wide * high, the size of the shell It is without being limited thereto, can voluntarily be selected according to requirement of experiment), it is set as front-rear switch, headlamp is installed inside housings, it is described The liner of shell can also be made of stainless steel.Temperature detecting module can use High Precision Dual platinum resistance, thermometric For range up to 0~250 DEG C, precision is 0.1 DEG C.

In addition, the experimental system for the aqueous corrosion experiment that is carbonized that the embodiment of the present invention mentions, can also include and handle mould The display module and memory module that block is connected.

Wherein, display module can be shown mounted in pipeline everywhere pressure sensor detection container inside pressure, It is mounted on the environment temperature of shell intracorporal temperature detecting module detection, the pressure inside preset container and preset temperature etc. Data can also show the change procedure of various data.

The memory module then can store the various experimental datas in relation to carbonization aqueous corrosion experiment, such as experimental system The CO that the variation record and regulation process, gasometry injected system of pressure inside interior each device are sent out₂Gas Amount, CO₂Preset pressure value of gas etc..

In addition, the switch valve in experimental system provided in an embodiment of the present invention is preferably electric-controlled switch, can also machinery open It closes.

Fig. 6 is the structural schematic diagram of the experimental system provided in an embodiment of the present invention for the aqueous corrosion experiment that is carbonized.Such as figure Shown in 6 comprising in temperature control system 6, and sequentially connected gas pressurization system 4, gasometry injected system 3, be carbonized water preparation system 2, carbonization hydrodynamic(al) state etching system 1 and waste collection system 5.

Technical solution of the present invention is now explained in detail with the attached drawing that this embodiment of the invention provides.

When the experimental system provided using this embodiment of the invention carries out carbonization aqueous corrosion experiment, it is necessary first to close Then all switch valves open the top cover that carbonization water prepares container 202, will be water-soluble in the configured simulated formation in laboratory Liquid (can add the corrosion inhibiter of doses simultaneously to evaluate anti-corrosion effects of the corrosion inhibiter in carbonization aqueous corrosion experiment) pours into Carbonization water is prepared in container 202, so that carbonization water is prepared container 202 equipped with simulated formation aqueous solution, is then covered tightly top cover.Then Several laboratory samples (metal testing plate or rock core) are placed on clamper according to requirement of experiment by the kettle cover for opening reaction kettle 105 In 103 (simulated formation aqueous solution must not have the metal testing plate or rock core completely), kettle cover, autoclave body are covered tightly after placing Internal clamper 103 must be fixed very firm, in fluid flowing, clamper 103 be it is fixed, without It is rotated with the rotation of fluid.Valve I 402, CO are turned on the switch after being ready to complete₂CO in gas tank 401₂Gas enters booster pump 403,405 couples of the air compressor CO into booster pump₂Gas is pressurized, pressurized CO₂Gas is in switch valve II 406 Control is lower to enter high pressure storage tank 408, and the top of high pressure storage tank 408 is equipped with safety valve 407, when in high pressure storage tank 408 gas When pressure is higher than 60MPa or is higher than preset pressure value, safety valve 407 be would automatically turn on, and be reduced in high pressure storage tank 408 Pressure, to guarantee the safety of experiment operator and equipment.It is then turned off switch valve I 402, solenoid valve 404 and switch valve II 406, while pressure regulator valve 409 is adjusted, pressure needed for being adjusted to experiment makes high pressure CO₂Gas stably enters gasometry note Enter in system 3.Turn on the switch valve 303, the high pressure CO in the high pressure storage tank 408 of gas pressurization system 4₂Gas is through switch valve 303 Flow into CO₂It quantitatively injects in container 304, closing pressure-regulating valve 409 and switch valve 303 prevent gas backstreaming later.Backpressure pump 301 With back-pressure valve 302 high pressure CO can be controlled according to requirement of experiment₂Gas enters CO₂Quantitatively inject the pressure of container 304.Pass through perseverance The computer exact flow rate system control piston of fast constant pressure pump 205 moves up, by setting certain flowing velocity for CO₂Quantitative note Enter the CO in container 304₂Gas is pushed into pipeline, flows through backpressure pump 301, back-pressure valve 302 and switch valve 201 and enters carbonization water system In standby container 202.Switch valve 201 is then turned on, 305 exact flow rates are pumped by the constant speed and constant pressure of gasometry injected system 3 Control, by CO₂Quantitatively inject the high pressure CO in container 304₂The slowly injection carbonization water of gas is prepared in container 202, with configuration The carbonization aqueous solution of various concentration.High pressure CO₂Gas flows into carbonization water through switch valve 201 and prepares in container 202, when injection gas After estimated value needed for the amount of body reaches experiment, constant speed and constant pressure pump 305 is automatically stopped work, and simultaneously closing off switch valve 201 prevents Gas backstreaming.Back-pressure valve 204 and backpressure pump 205 can control the pressure that carbonization water prepares container 202 according to requirement of experiment, prevent Blocking water, which prepares pressure decline in container 202, leads to the CO being carbonized in aqueous solution₂Concentration changes.Start upper piston area Blender, set certain mixing speed, to carbonization water prepare the carbonization aqueous solution in container 202 carry out Stirring, make It is mixed sufficiently, and certain density carbonization aqueous solution is obtained after the completion of preparation.It is accurately flowed by the computer of constant speed and constant pressure pump 203 Amount system control piston moves up, and the carbonization water in container is pushed into pipeline by setting certain flowing velocity, flows through back-pressure valve 204, backpressure pump 205 and switch valve I 101 enter in reaction kettle 105.It is in and closes in confirmation switch valve II 106 and back-pressure valve 107 After closed state, valve I 101 is turned on the switch, carbonization water prepares the carbonization aqueous fluid prepared in container 202 through switch valve I 101 It flows into reaction kettle 105.Before turning on the switch valve I 101, first confirm that switch valve II 106 and back-pressure valve 107 are in work shape State, back-pressure valve 107, back pressure container 108 and backpressure pump 109 form back pressure control system, using backpressure pump 109 to back pressure container 108 press, and set pressure by back-pressure valve 107, control the pressure inside reaction kettle 405, to meet difference Pressure needed for experiment, pressure needed for maintaining carbonization hydrodynamic(al) state corrosion experiment prevent carbonization aqueous fluid pressure decline from causing CO₂Gas evolution.Blender 104 is opened, correspondence is arranged according to dynamic flow regime needed for carbonization hydrodynamic(al) state corrosion experiment Revolving speed, the carbonization aqueous fluid in reaction kettle 105 flows, and starts dynamic to laboratory sample 102 (metal testing plate or rock core) Corrosion.Carbonization hydrodynamic(al) state corrosion experiment terminates after reaching required experimental period, turns on the switch valve II 106 and uses back pressure simultaneously Control system carries out pressure release to reaction kettle 105, participates in the waste liquid after reacting in reaction kettle 105 after pressure release and passes through switch valve II 106 feed line flow through switch valve 501 and enter in liquid waste collector 502.Valve 501 is turned on the switch, be carbonized water Dynamic Corrosion Waste reaction solution in reaction kettle 105 flows through switch valve 501, final all to flow into liquid waste collector 502.Waste liquid is toppled in timing Collector 502 maintains the cleaning of liquid waste collector 502 available.Finally laboratory sample (the gold after taking out reaction in reaction kettle 105 Belong to test piece or rock core) 102, the corrosion rate that carbonization hydrodynamic(al) state flows lower metal testing plate is tested and done using weight-loss method It evaluates out, or evaluates the effect of the corrosion inhibiter of used doses, add dosage and optimal use item so that determination is optimal Part；Rock core is then commented using the extent of injury that the experiment of test permeability improves reservoir under recovery efficiency technique to carbonization water drive Valence discloses the changing rule of reservoir properties during carbonization water drive oil, is that Oil Field can when formulating or adjusting development plan To provide reference experiment result.

Technical solution provided in an embodiment of the present invention can probe into carbonization aqueous solution under flow regime to laboratory sample Corrosion condition.And the experimental system can also provide the experimental situation of high temperature, high pressure, can more really restore utilization The water drive that is carbonized improves environmental condition when recovery efficiency technique carries out oil reservoir exploitation, and with simulation in Oil Field production, be carbonized water The Dynamic Corrosion situation and corrosion regularity to oil field equipment pipeline and reservoir rock are driven, is opened for Oil Field in formulation or adjustment The experimental result that can be referred to is provided when sending out technical solution.In addition, through measurement metal in the corrosive medium with corrosion inhibiter Corrosion rate, with blank assay compare, can determine effect, optimal dosage and the Best of the corrosion inhibiter.

Fig. 7 is the flow chart of the experimental method provided in an embodiment of the present invention for the aqueous corrosion experiment that is carbonized.Such as Fig. 7 institute Show, the experimental method includes: the flow for the carbonization aqueous solution that control flows into reaction kettle so that the carbonization aqueous solution The laboratory sample of the fixation in the reaction kettle is not crossed；The blender movement inside the reaction kettle is controlled, so that the carbon Change aqueous solution and is in dynamic flow regime；And control control pressurer system adjusts the pressure inside the reaction kettle, so that institute It states the pressure inside reaction kettle and reaches preset pressure.

Optionally, the embodiment of the invention also provides a kind of methods for preparing carbonization aqueous solution: in carbonization water preparation system In the case that internal pressure maintains preset pressure, by simulated formation aqueous solution and a certain amount of CO₂Gas mixing is at certain The carbonization aqueous solution of concentration.

Wherein, when preparing simulated formation aqueous solution, the corrosion inhibiter of doses can also be added, have to prepare The carbonization aqueous solution of corrosion inhibiter.Carbonization aqueous corrosion is carried out using the carbonization aqueous solution with corrosion inhibiter to test, and can be determined Influence of the corrosion inhibiter to carbonization aqueous corrosion experiment.

Wherein, when preparation is carbonized aqueous solution, the CO of the carbonization water preparation system is injected₂Gas maintains a level pressure Power state.

Wherein, the laboratory sample can be metal testing plate or rock core.

It, can be according to metal testing plate before carrying out carbonization aqueous corrosion reaction in the case where laboratory sample is metal testing plate Weight and reaction time afterwards determine certain carbonization aqueous solution to the corrosive power of metal testing plate.It is thus necessary to determine that metal The weight of test piece before the reaction and weight after the reaction.Wherein, it after completing carbonization aqueous corrosion experiment, needs to remove gold Belong to the corrosion products that test piece generates after being carbonized aqueous corrosion, then determines the weight of metal testing plate after the reaction.

Optionally, the corrosion rate of the metal testing plate can be determined by following formula:

Wherein, A_CIndicate that the average corrosion rate of metal testing plate, Δ W indicate metal testing plate Average weightlessness before and after corrosion experiment, S indicate that the area of metal testing plate, t indicate that etching time, ρ indicate the close of metal testing plate Degree.

In the case where laboratory sample is rock core, rock core can be measured by permeability experiment and carry out carbonization aqueous corrosion The permeability of front and back is tested, and further determines that carbonization aqueous solution to the loss ratio of the permeability of reservoir.

Optionally, carbonization aqueous solution can be determined to the loss ratio of the permeability of reservoir by following formula:

Wherein, D_KIndicate carbonization aqueous solution to the permeability damage rate of reservoir,Indicate carbon The arithmetic mean of instantaneous value of core permeability before change aqueous corrosion,The arithmetic of core permeability after expression carbonization aqueous corrosion Average value.

In addition, in order to guarantee the experimental situation of carbonization water close to the environment of oil field production scene, it is also necessary to control carbonization The environment temperature of aqueous corrosion experiment.Experimental method provided in an embodiment of the present invention further include: according to preset environment temperature and inspection The environment temperature of survey come control thermal module work so that carbonization aqueous corrosion experiment can under the conditions of preset temperature into Row.

The embodiment of the invention also provides a kind of experiments using the above-mentioned experimental system for the aqueous corrosion experiment that is carbonized Method, the experimental method process are as follows.

Before starting to carry out carbonization aqueous corrosion experiment, first carries out preparation: checking CO₂Gas tank is to ensure CO₂Gas tank It is air tight, while checking various pipelines and valve whether there is or not evaporating, emitting, dripping or leaking of liquid or gas phenomenons；Laboratory sample is pre-processed.If it is gold Belong to test piece, then need to polish to metal testing plate surface using 800 mesh silicon carbide (SiC) sand paper, then using distilled water and Acetone cleaning after dry in hot-air, is put into drier in case using, wherein claiming after weighing to metal testing plate The precision of weight is at least 0.1mg.If it is rock core, then carries out permeability experiment to measure rock core and carrying out carbonization aqueous corrosion Permeability before experiment.

By the clamper in reaction kettle, laboratory sample is fixed on inside reaction kettle, and is prepared in container to carbonization water Simulated formation aqueous solution (can need to choose whether that corrosion inhibiter is added according to experiment) is added.

After closed reactor, the air in exception pipeline and reaction kettle is removed using nitrogen bubbling method, the duration is preferably 2h can according to circumstances extend or reduce the duration.

Preset environment temperature is set, start-up temperature control system is set so that the environment temperature in experimental system reaches Fixed environment temperature, reuses CO₂Gas circulates entire experimental system to exclude remaining nitrogen in pipeline and reaction kettle, and Adjust air pressure air pressure to needed for carrying out carbonization water experiment in experimental system.

Start gas pressurization system, gasometry injected system and carbonization water preparation system, and according to experiment demand configuration The carbonization aqueous solution of various concentration.

Configured carbonization aqueous solution in carbonization water preparation system is sent to reaction kettle, so that the configured carbon The laboratory sample can at least not had completely by changing aqueous solution.

The blender in reaction kettle is opened, so that carbonization aqueous solution is in dynamic flow regime.Setting carbonization aqueous corrosion is real The required reaction time is tested, the carbonization aqueous corrosion experiment under simulation high temperature and pressure dynamic flow conditions is carried out.

After the end of the experiment, the liquid after making reaction flow to liquid waste collector.

All laboratory samples are taken out, and are cleaned with deionized water and acetone rapidly.If the laboratory sample is metal examination Piece then needs to clean corrosion products film.Specifically, concentrated hydrochloric acid and hexamethylene amine can be used and distilled water is configured to solution To remove corrosion product, with being dried after deionized water and acetone rinsing after having impregnated.

For metal testing plate, by weight after its reaction of electronic balance weighing, according to metal testing plate before the reaction after Weight difference and reaction time can calculate carbonization aqueous solution to the corrosion rate of metal testing plate.For rock core, then need to carry out Permeability test experiments, with determine by carbonization aqueous corrosion experiment after rock core permeability, according to rock core before the reaction after Permeability can determine carbonization aqueous solution to the extent of injury of reservoir.

Detail and benefit in relation to the above-mentioned experimental method for the aqueous corrosion experiment that is carbonized provided by the invention, can Refering to the above-mentioned description for the experimental system provided by the present invention for carbonization aqueous corrosion experiment, repeated no more in this.

Correspondingly, one embodiment of the invention also provides a kind of machine readable storage medium, on the machine readable storage medium It is stored with instruction, which is used for so that machine executes described in any item experiments for the aqueous corrosion experiment that is carbonized among the above Method.

The optional embodiment of the embodiment of the present invention is described in detail in conjunction with attached drawing above, still, the embodiment of the present invention is simultaneously The detail being not limited in above embodiment can be to of the invention real in the range of the technology design of the embodiment of the present invention The technical solution for applying example carries out a variety of simple variants, these simple variants belong to the protection scope of the embodiment of the present invention.

It is further to note that specific technical features described in the above specific embodiments, in not lance In the case where shield, it can be combined in any appropriate way.In order to avoid unnecessary repetition, the embodiment of the present invention To various combinations of possible ways, no further explanation will be given.

It will be appreciated by those skilled in the art that implementing the method for the above embodiments is that can pass through Program is completed to instruct relevant hardware, which is stored in a storage medium, including some instructions are used so that single Piece machine, chip or processor (processor) execute all or part of the steps of each embodiment the method for the application.And Storage medium above-mentioned includes: that USB flash disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), arbitrary access are deposited The various media that can store program code such as reservoir (RAM, Random Access Memory), magnetic or disk.

In addition, any combination can also be carried out between a variety of different embodiments of the embodiment of the present invention, as long as it is not The thought of the embodiment of the present invention is violated, equally should be considered as disclosure of that of the embodiment of the present invention.

Claims (15)

1. a kind of experimental system for the aqueous corrosion experiment that is carbonized, which is characterized in that the experimental system includes:

Be carbonized hydrodynamic(al) state etching system, and the carbonization hydrodynamic(al) state etching system includes reaction kettle and is arranged in the reaction kettle Blender and fixation device for fixing laboratory sample；

Control pressurer system, including pressure detecting module and pressure adjusting module, are connected, for examining respectively with the reaction kettle Survey and adjust the pressure inside the reaction kettle；And

Processing module is connected with the control pressurer system, for the pressure inside the reaction kettle based on the received and in advance If pressure, the pressure adjusting module work is controlled, to adjust the pressure inside the reaction kettle.

2. experimental system according to claim 1, which is characterized in that the experimental system further include:

Be carbonized water preparation system, is used to prepare carbonization aqueous solution and send the carbonization aqueous solution that preparation is completed to the reaction kettle Interior, the carbonization water preparation system includes；

Carbonization water prepares container, and prepared by the carbonization water have piston and blender inside container；And

Constant speed and constant pressure pump, prepares container and is connected with the processing module and the carbonization water, for preparing to the carbonization water Piston lower portion in container injects quantitative liquid, to push the piston action certain distance,

The control pressurer system prepares container with the carbonization water and is connected, and holds for detecting and adjusting the carbonization water preparation Pressure inside device,

Wherein, the processing module is also used to execute following operation:

The carbonization water prepares pressure and preset pressure inside container based on the received, controls the pressure adjusting module work Make, prepares pressure inside container to adjust the carbonization water；And

According to the amount of the preset carbonization aqueous solution for participating in carbonization aqueous corrosion experiment, the constant speed and constant pressure pump work is controlled, to adjust The whole carbonization water prepares the amount of the carbonization aqueous solution of container submitting.

3. experimental system according to claim 2, which is characterized in that the experimental system further include:

Gasometry injected system, the CO for will be maintained under certain process stage₂Gas send to the carbonization water and prepares container Interior, the gasometry injected system includes:

CO₂Quantitatively inject container, the CO₂Quantitatively there is piston inside injection container；And

Constant speed and constant pressure pump, with the processing module and the CO₂Quantitatively injection container is connected, and is used for the CO₂Quantitative injection Quantitative liquid is injected under piston in container, to push the piston action certain distance,

The control pressurer system and the CO₂Quantitatively injection container is connected, for detecting and adjusting the CO₂Quantitative injection Pressure inside container,

Wherein, the processing module is also used to execute following operation:

The CO based on the received₂The pressure and preset pressure inside container are quantitatively injected, the pressure adjusting module work is controlled Make, to adjust the CO₂Quantitatively inject the pressure inside container；And

According to the preset CO for participating in carbonization aqueous corrosion experiment₂The amount of gas controls the constant speed and constant pressure pump work, to adjust State CO₂The quantitatively CO that injection container is sent out₂The amount of gas.

4. experimental system according to claim 3, which is characterized in that the experimental system further include:

Gas pressurization system is used for the CO₂Gasometry injection system is sent to after the pressure increase to preset value of gas System, the gas pressurization system include:

CO₂Gas tank is connected with booster pump, for storing CO₂Gas；

Air compressor and booster pump, for the CO for entering the booster pump₂Gas is pressurized；And

High pressure storage tank is connected with the booster pump, for storing pressurized CO₂Gas.

5. experimental system according to claim 1, which is characterized in that the experimental system further include:

Waste collection system is connected with the carbonization hydrodynamic(al) state etching system, described for collecting the waste liquid after participating in reaction Waste collection system includes:

Liquid waste collector is connected with the reaction kettle by pipeline, for collecting the participation carbonization in the reaction kettle The waste liquid generated after aqueous corrosion experiment；And

Switch valve is connected in the pipeline.

6. experimental system according to any one of claims 1-5, which is characterized in that the experimental system further include:

Shell, other equipment in the experimental system in addition to the shell and the processing module are comprised in the shell It is interior,

It is additionally provided with temperature detecting module and temperature control modules in the shell, is respectively used to detect and regulate and control in the shell Environment temperature,

The processing module controls described according to the environment temperature that preset environment temperature and the temperature detecting module detect Temperature control modules work, to adjust the temperature in the experimental system.

7. a kind of experimental method for the aqueous corrosion experiment that is carbonized, which is characterized in that the experimental method includes:

The flow of the carbonization aqueous solution flowed into reaction kettle is controlled so that the carbonization aqueous solution did not had in the reaction kettle The laboratory sample of interior fixation；

The blender movement inside the reaction kettle is controlled, so that the carbonization aqueous solution is in dynamic flow regime；And

Control control pressurer system adjusts the pressure inside the reaction kettle, so that the pressure inside the reaction kettle reaches default Pressure.

8. experimental method according to claim 7, which is characterized in that the experimental method further include:

In the case that pressure inside the water preparation system that is carbonized maintains the preset pressure, by simulated formation aqueous solution and one Quantitative CO₂Gas mixing is at certain density carbonization aqueous solution.

9. experimental method according to claim 8, which is characterized in that the experimental method further include:

Corrosion inhibiter is added in the simulated formation aqueous solution, to prepare the carbonization aqueous solution with corrosion inhibiter.

10. experimental method according to claim 8, which is characterized in that the experimental method further include:

By CO₂After the pressure increase to preset value of gas, the quantitative feeding carbonization water preparation system.

11. experimental method according to claim 7, which is characterized in that the experimental method further include:

Remove the corrosion product of generation of the laboratory sample after the carbonization aqueous corrosion experiment；And determine the experiment Sample removes the weight after the corrosion product.

12. experimental method according to claim 11, which is characterized in that the laboratory sample is metal testing plate, the reality Proved recipe method further includes determining the corrosion rate of the metal testing plate according to the following formula:

Wherein, A_CIndicate that the average corrosion rate of metal testing plate, Δ W indicate average weightlessness of the metal testing plate before and after corrosion experiment, S indicates that the area of metal testing plate, t indicate that etching time, ρ indicate the density of metal testing plate.

13. experimental method according to claim 7, which is characterized in that the laboratory sample is rock core, the experimental method Further include determining the carbonization aqueous solution to the permeability damage rate of reservoir according to the following formula:

Wherein, D_KIndicate carbonization aqueous solution to the permeability damage rate of reservoir,Rock core permeates before indicating carbonization aqueous corrosion The arithmetic mean of instantaneous value of rate,The arithmetic mean of instantaneous value of core permeability after expression carbonization aqueous corrosion.

14. the experimental method according to any one of claim 7-13, which is characterized in that the experimental method further include:

Thermal module work is controlled according to preset environment temperature and the environment temperature of detection, so that the carbonization aqueous corrosion Experiment carries out under the conditions of preset temperature.

15. a kind of machine readable storage medium, it is stored with instruction on the machine readable storage medium, which is used for so that machine Execute the experimental method described in any one of the application the claims 7-14 for the aqueous corrosion experiment that is carbonized.