CN202305523U - Diagenesis simulated experiment device - Google Patents
Diagenesis simulated experiment device Download PDFInfo
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- CN202305523U CN202305523U CN201120344178XU CN201120344178U CN202305523U CN 202305523 U CN202305523 U CN 202305523U CN 201120344178X U CN201120344178X U CN 201120344178XU CN 201120344178 U CN201120344178 U CN 201120344178U CN 202305523 U CN202305523 U CN 202305523U
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Abstract
The embodiment of the utility model provides a diagenesis simulated experiment device, which comprises a control device, a reaction solution supply device, a multi-stage continuous flow reaction device, a solution component in-situ analysis device and an online core permeability evolution detection device, wherein the control device is connected to the reaction solution supply device, the multi-stage continuous flow reaction device and the online core permeability evolution detection device respectively; the reaction solution supply device is connected to the multi-stage continuous flow reaction device and the online core permeability evolution detection device respectively; the multi-stage continuous flow reaction device is connected to the solution component in-situ analysis device; and the online core permeability evolution detection device is connected to the multi-stage continuous flow reaction device and the reaction solution supply device respectively. The diagenesis simulated experiment device can finish more than two stages of water-rock reaction processes under different temperature and pressure conditions and under the condition of keeping fluid flowing continuously, so that simulation for a continuous multi-stage water-rock reaction experiment is realized.
Description
Technical field
The utility model relates to the experimental provision in oil geology field; Particularly relate to a kind of Diagn analogue experiment installation; Be a kind of Diagn analogue experiment installation that possesses analysis of fluid original position and the online detection of permeability concretely, be mainly used in simulation because Diagn such as the corrosion that the basin up-down causes temperature in the actual formation, pressure, fluid properties to change to be caused, gluing, explanations.
Background technology
As everyone knows, resources such as oil and rock gas reduce just day by day, and adopting and more effectively exploiting these resources with more economic mode also is trend of the times.Through Diagn research, help to judge whether the research rock stratum possesses the condition of storage oil gas, thereby improve the efficient of oil-gas exploration the rock stratum.
Diagn is meant various physics, chemistry and the biological chemistry action that sediment is taken place in the rock conversion process, mainly occur in deposition to metamorphism during this period of time before afterwards.Diagn has vital role in oil and gas reservoir research.Through to diagenetic research, can understand the transformation degree of Diagn to reservoir, estimate and predicting reservoir from the diagenesis angle.Diagn is the process that built-in system and external environment interact, coordinate each other, and different basin types can have different diagenesis evolution, same basin, and the different parts diagenesis evolution also maybe be different.
The water rock reaction experiment of at present, simulating different buring environments is one of important means of Diagn research.The reaction of water rock is meant in geologic process, and the chemical reaction that material composition exchanges each other takes place between the WS and mineral rock.Bury at sediment, in the process of heating and compacting, the fluid in the sediment can be discharged from.Along with the migration of fluid, it can react with other rock or mineral, forms the fluid with certain chemical attribute.Be accompanied by the up-down in basin, the temperature of rock stratum, pressure, fluid properties also change thereupon, thereby Diagn such as corrosion, gluing, explanation take place.Existing analogue experiment installation can only provide the water rock reaction simulation in single stage; Low, the simplicity of design of plant automation degree is difficult to simulate well Diagn such as corrosion that geologic function such as structural evolution, sedimentation bury cause temperature in the actual formation, pressure, fluid properties to change to be caused, gluing, explanation.
The utility model content
The utility model provides a kind of Diagn analogue experiment installation, comprises control device, reaction solution feeding mechanism, multistage continuous stream reaction unit, solution compolision original position analytical equipment and core permeability evolution on-line measuring device; Wherein, said control device is connected to said reaction solution feeding mechanism, said multistage continuous stream reaction unit and said core permeability evolution on-line measuring device; Said reaction solution feeding mechanism is connected to said multistage continuous stream reaction unit and said core permeability evolution on-line measuring device; Said multistage continuous stream reaction unit is connected in said solution compolision original position analytical equipment; Said core permeability evolution on-line measuring device is connected to said multistage continuous stream reaction unit and said reaction solution feeding mechanism; Said control device is controlled said reaction solution feeding mechanism under pressure of setting and flow velocity; From outside abstraction reaction solution and reacting gas, and said reaction solution and reacting gas be sent to said multistage continuous stream reaction unit or said core permeability evolution on-line measuring device; Said multistage continuous stream reaction unit comprises at least two agitated reactors, places rock to be measured in the said agitated reactor, and said rock to be measured and said reaction solution react, the reaction of formation Generation Liquid; Said reaction solution flow into said solution compolision original position analytical equipment, under high-temperature and high-pressure conditions, analyzes the composition and the content of said reaction solution; Said core permeability evolution on-line measuring device is used to place rock core to be measured, and reacts with said reaction solution or said reaction solution, is used for the permeability of the said rock core to be measured of real-time, online detection.
In the present embodiment; Said Diagn analogue experiment installation also comprises at least two solution on-line samplers; Correspondence is connected at least two agitated reactors in the said multistage continuous stream reaction unit, is used for the online reaction solution that obtains said at least two agitated reactors under the HTHP.
In the present embodiment; The said multistage connects the stream reaction unit and also comprises at least two hygrosensors, and correspondence is connected in said at least two agitated reactors, and connects said control device; Be used for detecting the temperature of the reaction solution of corresponding agitated reactor, and feed back to said control device and show.
In the present embodiment, said Diagn analogue experiment installation also comprises at least two overvoltage protectors, is arranged on the exit of said at least two agitated reactors, is used for when the analogue experiment installation actual pressure is higher than the setting safety value system's releasing pressure automatically.
The Diagn analogue experiment installation that the utility model provides; Can simulate the different strata buring environment; Two the above stage water rock courses of reaction of completion under different temperature and pressure condition and maintenance fluid continuous flow situation; Realize continuous multistage water rock reaction experiment simulation, this will help to make, and fluid chemistry character more approaches natural actual conditions in the experimental phase.In the experimentation of multistage continuous flow; Through temperature, pressure, fluid chemistry character, mineral composition and the flow performance that duplicates different phase in the diagenesis mechanism, can effectively simulate because Diagn such as the corrosion that the basin up-down causes temperature in the actual formation, pressure, fluid properties to change to be caused, gluing, explanations.
The Diagn analogue experiment installation that the utility model provides not only can have been simulated the open flow system but also can have been simulated the water rock reaction under the static closed system, the Diagn that especially can simulate actual formation more truly and taken place through the experiment of multistage continuous stream; Combine HTHP solution compolision original position analytical technology and the online sampling technique of HTHP solution again; Can analyze the fluid properties of each elementary reaction Generation Liquid; So just realized experimental simulation, helped to provide diagenesis pattern more accurately the diagenesis pattern; Utilize core permeability evolution on-line measuring device; Can effectively simulate cover press and hot conditions under water rock reaction between true core and the fluid; And permeability value that can real-time, online detection rock core, realize the transformation efficient of quantitative description fluid to the rock core internal void.
Between a plurality of agitated reactors of the Diagn analogue experiment installation that the utility model provides and agitated reactor adopted the serial/parallel design that is connected with connected mode between the core holding unit; Under series connection; The Diagn analogue experiment installation can provide multistage continuous flow experimental situation, carries out multistage water rock reaction experiment simulation; Under parallelly connected state, agitated reactor or core holding unit be independent operating separately, single stage water rock reaction experiment simulation is provided, thereby increases work efficiency.And agitated reactor, valve, pipeline all adopt the inconel625 alloy material to process, and this just guarantees that whole device can high temperature resistant, high pressure resistant and strong alkali-acid resistance corrosion.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art; To do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below; Obviously, the accompanying drawing in describing below only is some embodiment of the utility model, to those skilled in the art; Under the prerequisite of not paying creative work property, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structural representation of the Diagn analogue experiment installation of the utility model embodiment;
Fig. 2 is the structural representation of the reaction solution feeding mechanism of the utility model embodiment;
Fig. 3 is the structural representation of another embodiment of the utility model Diagn analogue experiment installation;
Fig. 4 is the structural representation of another embodiment of the utility model Diagn analogue experiment installation;
Fig. 5 is the structural representation of the solution composition original position analytical equipment of the utility model embodiment;
Fig. 6 is the structural representation of the core permeability evolution on-line measuring device of the utility model embodiment;
Fig. 7 is the structural representation that comprises the multistage continuous stream reaction unit of a plurality of first heating arrangements;
Fig. 8 is the structural representation that comprises the multistage continuous stream reaction unit of one first heating arrangement;
Fig. 9 is the structural representation that comprises the core permeability evolution on-line measuring device of second heating arrangement;
Figure 10 is the structural representation of the control device of the utility model embodiment;
Figure 11 is the syndeton synoptic diagram with N agitated reactor and N-1 thermode in the N stage water rock reaction experiment analogue means of the utility model embodiment;
Figure 12 is the structural representation of a specific embodiment of the Diagn analogue experiment installation of the utility model embodiment.
Embodiment
To combine the accompanying drawing among the utility model embodiment below, the technical scheme among the utility model embodiment is carried out clear, intactly description, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the utility model protection.
Fig. 1 is the structural representation of the Diagn analogue experiment installation of the utility model embodiment.As shown in the figure, the described Diagn analogue experiment installation in the present embodiment comprises control device 1, reaction solution feeding mechanism 2, multistage continuous stream reaction unit 3, solution compolision original position analytical equipment 4 and core permeability evolution on-line measuring device 5; Wherein, said control device 1 is connected to said reaction solution draw-out device 2, said multistage continuous stream reaction unit 3 and said core permeability evolution on-line measuring device 5; Said reaction solution feeding mechanism 2 is connected to said multistage continuous stream reaction unit 3 and said core permeability evolution on-line measuring device 5; Said multistage continuous stream reaction unit 3 is connected in said solution compolision original position analytical equipment 4; Said core permeability evolution on-line measuring device 5 is connected to said multistage continuous stream reaction unit 3 and said reaction solution feeding mechanism 2.
The said reaction solution feeding mechanism 2 of said control device 1 control is under pressure of setting and flow velocity; From outside abstraction reaction solution and reacting gas, and said reaction solution and reacting gas be sent in said multistage continuous stream reaction unit 3 or the said core permeability evolution on-line measuring device 5.
Said multistage continuous stream reaction unit 3 comprises at least two agitated reactors, places rock to be measured in the said agitated reactor, and said rock to be measured and said reaction solution react, the reaction of formation Generation Liquid.
Said reaction solution flow into said solution compolision original position analytical equipment 4, under high-temperature and high-pressure conditions, analyzes the composition and the content of said reaction solution, and diagenesis pattern more accurately is provided.
Said core permeability evolution on-line measuring device 5 is used to place rock core to be measured; And react with said reaction solution or said reaction solution; The permeability that is used for the said rock core to be measured of real-time, online detection realizes the transformation efficient of quantitative description fluid to the rock core internal void.
In the present embodiment, as shown in Figure 2, reaction solution feeding mechanism 2 comprises: liquid phase pump 201 is used to set the required flow velocity of experiment, and from outside abstraction reaction solution, and provides experiment required pressure through compression solution; Wherein, reaction solution can be fresh water or oil-field water, also can be the solution of human configuration.Gas phase pump 202 is used under described pressure and flow velocity, extracts external reaction gas, like carbon dioxide or sulfuretted hydrogen etc.; Primary heater 203 is used for that said reaction solution and said reacting gas are mixed the reaction solution that is generated and heats.Wherein, said gas phase pump 202 is the high pressure vapor pump, and liquid phase pump 201 is the highly pressurised liquid ram pump; Dispose pressure transducer and flow sensor in the liquid phase pump 201; Be connected in control device 1, the flow velocity of reaction solution can be set, and provide experiment required pressure according to compression solution.
In the present embodiment; As shown in Figure 3; Said Diagn analogue experiment installation also comprises at least two solution on-line samplers 601,602; Correspondence is connected at least two agitated reactors 301,302 in the said multistage continuous stream reaction unit 3, is used for the online reaction solution that obtains said at least two agitated reactors 301,302 under the HTHP.Wherein, The said multistage connects the stream reaction unit and also comprises at least two hygrosensors (not showing among Fig. 3); Correspondence is connected in said at least two agitated reactors 301,302; And connect said control device 1, be used for detecting the temperature of the reaction solution of corresponding agitated reactor, and feed back to said control device 1 and show.Wherein, the agitated reactor in the present embodiment is at least two, according to the experiment needs, agitated reactor can be set for more a plurality of, so that more multistage Diagn simulated experiment to be provided.And, adopted serial/parallel connection design between a plurality of agitated reactors in the Diagn simulation test, under series connection, the Diagn simulated experiment can provide multistage continuous flow experimental situation, carries out multistage water rock reaction experiment simulation; Under parallelly connected state, each agitated reactor is independent operating separately, and single stage water rock reaction simulated experiment is provided.
In the present embodiment; As shown in Figure 4, said Diagn analogue experiment installation also comprises at least two overvoltage protectors 701,702, is arranged on the exit of said at least two agitated reactors 301,302; Be used for when the analogue experiment installation actual pressure is higher than the setting safety value system's releasing pressure automatically.
In the present embodiment, as shown in Figure 5, said solution compolision original position analytical equipment 4 comprises at least two in-situ observation ponds 401,402, fibre-optical probe 403 and spectroanalysis instrument 404; Said at least two in-situ observation ponds 401,402 are connected with said spectroanalysis instrument 404 through said fibre-optical probe 403, are used for the composition and the content of the reaction solution that said at least two agitated reactors of analysis generate under HTHP original position condition.Wherein, in-situ observation pond 401,402 also is corresponding one by one setting with agitated reactor 301,302, is used for observing the composition and the content of the reaction solution that each agitated reactor generates.In the present embodiment, the in-situ observation pond can be sapphire form pond.Spectroanalysis instrument 404 comprises UV, visible light photothermal spectroscopic analyzer, laser Raman spectrometer or infrared visible spectrophotometer.
In the present embodiment, as shown in Figure 6, core permeability evolution on-line measuring device 5 comprises: core holding unit 501 is used for clamping rock core to be measured; Manual pump 502 is used to said core holding unit 501 preset confined pressure is provided; Pressure detector 503 connects control device 1, is used to measure the pressure reduction at said core holding unit 501 two ends, and said pressure reduction is fed back to said control device 1, and real-time online detects the permeability of said rock core to be measured.Wherein, Also be to have adopted serial/parallel design repeatedly between the agitated reactor in core holding unit 501 and the multistage continuous stream reaction unit 3; Under series connection, can carry out multistage water rock reaction experiment simulation, under parallelly connected state; Agitated reactor and core holding unit be independent operating separately, and single stage water rock reaction experiment simulation is provided.
In the present embodiment, said core holding unit 501 comprises the clamper housing and boosts jar, the said jar said clamper housing of the encirclement setting of boosting; Said manual pump 502 connects the said jar that boosts, and through the said solution that boosts between jar and the said clamper housing of said manual pump 502 compressions, the confined pressure of said clamper housing is provided; Said pressure detector 503 is connected the two ends of said clamper housing; When being used to measure fluid through rock core to be measured; The pressure differential that core holding unit 501 two ends produce, thus the permeability of rock core to be measured can be calculated, to realize the transformation efficient of quantitative description fluid to the rock core internal void.
In the present embodiment, as shown in Figure 7, the said multistage connects stream reaction unit 3 and also comprises first heating arrangement 303, is used to said at least two agitated reactors 301,302 heating, sets the temperature of the reaction solution in the said agitated reactor.Said first heating arrangement 303 can be outer heating jacket, evenly wraps up said agitated reactor 301,302, and is connected to said control device 1.First heating arrangement 303 comprises resistance wire, is used for heating; The temperature control thermopair is used to control the heating-up temperature of said resistance wire; Hygrosensor is used to detect the heating-up temperature of said resistance wire.Said resistance wire, temperature control thermopair and hygrosensor all are connected in control device.Wherein, First heating arrangement 303 can be set to a plurality of corresponding to a plurality of agitated reactors, can be different agitated reactors different working temperatures is provided this moment, carries out that multistage water rock reaction experiment simulation also can be provided with a whole heating arrangement under different temperatures; Wrap up a plurality of agitated reactors; At this moment, all agitated reactors are operated under the same temperature, carry out multistage water rock reaction experiment simulation under same temperature.That is to say that control device 1 can be controlled a plurality of first heating arrangements 303 with the corresponding one by one setting of a plurality of agitated reactors, and is as shown in Figure 7; Also can control first heating arrangement 303 for the whole heating of a plurality of agitated reactors, as shown in Figure 8.
In the present embodiment, as shown in Figure 9, said core permeability evolution on-line measuring device 5 also comprises second heating arrangement 504, is connected in said control device 1, is used to said core holding unit 501 heating, sets the experimental temperature of said core holding unit 501.In the present embodiment, said second heating arrangement 504 is outer heating jacket, evenly wraps up the jar that boosts of said core holding unit 501, and connects control device 1.Wherein, second heating arrangement 504 comprises resistance wire, is used for heating; The temperature control thermopair is used to control the heating-up temperature of said resistance wire; Hygrosensor is used to detect the heating-up temperature of said resistance wire.Said resistance wire, temperature control thermopair and hygrosensor all are connected in control device 1.
In the present embodiment; Shown in figure 10; Said control device 1 comprises switch board 101 and computing machine 102, is used for controlling and shows the confined pressure and the temperature of reaction solution wherein of temperature and the said core holding unit 501 of the temperature that is used to control and show the reaction solution of said primary heater 203 heating, said agitated reactor 301,302 reaction solutions.Wherein, control device 1 is connected in gas phase pump 202 and the motor of liquid phase pump 201 in the reaction solution feeding mechanism 2, controls its work, also connects pressure transducer and flow sensor in the liquid phase pump 201, shows the flow velocity of reaction solution; Control device 1 also connects first heating arrangement 303 that the multistage connects stream reaction unit 3, the experimental temperature of control agitated reactor; Control device 1 also connects second heating arrangement 504 and pressure detector 503 of core permeability evolution on-line measuring device 5, the pressure reduction at the working temperature of control core holding unit 501 and demonstration core holding unit 501 two ends.
In the present embodiment, shown in figure 11, be connected with thermode between said at least two agitated reactors, the temperature of reaction solution that is used for controlling said at least two agitated reactors is different.Wherein, different according to the quantity of agitated reactor, thermode is also different corresponding to the quantity that agitated reactor is provided with.When 3 agitated reactors were arranged in the experimental provision, then the pipeline of agitated reactor series connection was provided with two thermodes, between two agitated reactors, can carry out the water rock reaction experiment simulation of three phases.Equally, when N agitated reactor arranged in the experimental provision, then the pipeline of agitated reactor series connection was provided with N-1 thermode, between two agitated reactors, can carry out the water rock reaction experiment simulation in N stage.
In the present embodiment, the pipeline and the valve of agitated reactor and coupled reaction still are processed by the inconel625 alloy material, guarantee high temperature resistant, the high pressure resistant and strong alkali-acid resistance corrosion of whole device.Therefore, in the present embodiment, the maximum operating temperature of said core permeability evolution on-line measuring device 5 is 170 ℃, and maximum working pressure (MOP) is 68MPa.The maximum operating temperature that the said multistage connects stream reaction unit 3 is 400 ℃, and maximum working pressure (MOP) is 100MPa.
Embodiment one:
Figure 12 is the structural representation of a specific embodiment of the Diagn analogue experiment installation of the utility model.As shown in the figure; The experimental provision of the utility model comprises agitated reactor R1, agitated reactor R2, gas phase pump F1, liquid phase pump F2, primary heater W1, thermode W2, overvoltage protector C1, overvoltage protector C2, temperature probe T 1, temperature probe T 2, condenser W3, buffer brake controller P, gas-liquid separator S; The in-situ observation pond B1 of solution compolision original position analytical equipment, in-situ observation pond B2, fibre-optical probe X and spectroanalysis instrument G; The stopple coupon Q1 of solution on-line sampler, stopple coupon Q2 and valve V4, V5, V11, V12; The core holding unit R3 of permeability real time on-line detection device, pressure detector P1, manual pump F3 also have heating arrangement (not shown) and the switch board K and the computing machine M of multistage continuous stream reaction unit and permeability real time on-line detection device in addition.The gas phase pump F1 of present embodiment is the gases at high pressure pump, and liquid phase pump F2 is the highly pressurised liquid ram pump, and wherein, highly pressurised liquid ram pump F2 disposes pressure transducer and flow sensor.The outlet of highly pressurised liquid ram pump F2 and gases at high pressure pump F1 is connected with primary heater W1 inlet through valve, pipeline, and primary heater W1 outlet is communicated with the import of agitated reactor R1, agitated reactor R2 and core holding unit R3 respectively through heatproof three-way valve V1, V2, V13 and pipeline; Agitated reactor R1 and agitated reactor R2 comprise hollow housing, are provided with sample holder in the housing, are used to place solid sample, and housing all has opening in two ends up and down, and filtrator all is housed, and the below is a fluid inlet, and the top is a fluid egress point; Agitated reactor R1 outlet connects temperature probe T 1, overvoltage protector C1, the online stopple coupon Q1 of solution and in-situ observation pond B1 inlet respectively, and agitated reactor R2 outlet connects the inlet of temperature probe T 2, overvoltage protector C2, the online stopple coupon Q2 of solution and in-situ observation pond B2 respectively; Overvoltage protector C1, C2 are used for when system's actual pressure is higher than the setting safety value, and system's releasing pressure automatically, temperature probe T 1, T2 are used to measure the temperature of the reaction solution that reacts attached middle school's generation; Agitated reactor R1 outlet connects stopple coupon Q1 through valve V4; Agitated reactor R2 outlet connects stopple coupon Q2 through valve V11; Stopple coupon has definite volume, and the endpiece of stopple coupon Q1 connects valve V5, and the endpiece of stopple coupon Q2 connects valve V12; Stopple coupon is used for the Generation Liquid in course of reaction is obtained agitated reactor, carries out composition and content analysis; Outlet is connected with spectroanalysis instrument G through fibre-optical probe X with in-situ observation pond B2 in in-situ observation pond B1 outlet; The Generation Liquid of the agitated reactor in-situ observation pond of can flowing through utilizes spectroanalysis instrument G can under HTHP original position condition, analyze the composition and the content of Generation Liquid in in-situ observation pond B1, the B2; The spectroanalysis instrument of present embodiment comprises ultraviolet-visual spectrometer, laser Raman spectrometer or infrared visible spectrophotometer, and the in-situ observation pond is sapphire form pond; The outlet of sapphire form pond B1 connects three the tunnel: leading up to heatproof three-way valve V6, V7, V8 and valve V9 is connected condenser W3, buffer brake controller P, gas-liquid separator S in order; Leading up to heatproof valve V6, thermode W2 and heatproof valve V10 is communicated with the import of agitated reactor R2, leads up to heatproof three-way valve V6, V7, V8, V13 to be communicated with core holding unit R3 import; The outlet of sapphire form pond B2 connects two-way: leading up to heatproof three-way valve V7, V8 and valve V9 is connected condenser W3, buffer brake controller P, gas-liquid separator S in order, leads up to heatproof three-way valve V7, V8, V13 to be communicated with core holding unit R3 import; Wherein buffer brake controller P is used to keep the stable of system pressure under the flow state, adopts the manual adjustments mode; Core holding unit R3 comprises clamper housing and the jar that boosts that surrounds the clamper housing, has the cavity of placing required clamping rock core in the housing; Core holding unit R3 housing all has opening in two ends up and down; The below is a fluid inlet; The top is a fluid egress point; Endpiece forms taphole through pipeline and valve V15, and entrance point is connected differential pressure detector P1 with the endpiece two ends, the pressure differential that core holding unit R3 housing two ends produce when being used to measure fluid through core sample; Surround boosting of core holding unit housing and be surrounded by cavity between jar and the clamper housing, be full of solution in the cavity, manual pump F3 connects jar interface that boosts, and compresses the solution in jar cavity that boosts, and core holding unit R3 housing is produced confined pressure.The heating arrangement of multistage continuous stream reaction unit and permeability real time on-line detection device is outer heating jacket; The clamper housing of difference encapsulation reaction still R1 and agitated reactor R2, thermode W2 and core holding unit R3, each outer heating jacket comprises resistance wire, temperature control thermopair, hygrosensor; Resistance wire is uniform winding, encapsulation reaction still R1 and R2, thermode and core holding unit housing respectively, is used for heating, temperature control thermopair controlling resistance silk heating-up temperature, and hygrosensor detects the resistance wire heating-up temperature; Control device is made up of switch board K and coupled computing machine M; Switch board K connects the motor among gas phase pump F1 and the liquid phase pump F2, pressure transducer and flow sensor, temperature probe T 1 and the T2 of liquid phase pump F2 configuration respectively; And pressure detector P1, also connect resistance wire, temperature control thermopair and the hygrosensor of each outer heating jacket of the heating arrangement of multistage continuous stream reaction unit and permeability real time on-line detection device.
In addition, connected mode has adopted serial/parallel connection design between the agitated reactor R1 of diagenetic analogue experiment installation, agitated reactor R2 and the core holding unit R3.In Figure 11;, and agitated reactor R1, agitated reactor R2, core holding unit R3 are together in parallel being together in series between agitated reactor R1, the agitated reactor R2 or between the agitated reactor R1, agitated reactor R2, core holding unit R3 through the pipeline between the pipeline between three-way valve V6 and the V10 and V7, V8 and the V13 through three-way valve V1, V2, V13; Under series connection, the Diagn analogue experiment installation can provide multistage continuous flow experimental situation, carries out multistage water rock reaction experiment simulation; Under parallelly connected state, agitated reactor R1, agitated reactor R2 or core holding unit R3 be independent operating separately, single water rock reaction experiment simulation is provided, thereby increases work efficiency.
Agitated reactor in the diagenetic analogue experiment installation, valve, pipeline are processed by the corrosion resistant inconel625 alloy material of heat resisting and pressure resisting; Diagn such as the corrosion under can simulating from hypergene to buried Tibetan environment, gluing, explanation comprise different partials pressure of carbon dioxide, H
2The corrosion of acidic fluid such as S, organic acid and rock or mineral.
According to the experiment demand, can select suitable solid sample.The solid particles of rock sample both can be a mineral grain, also can be the plunger appearance of natural core, and the maximum gauge of rock core post is 1 inch.Reacting gas can be carbon dioxide or sulfuretted hydrogen etc.According to the geologic media of experimental simulation, reaction solution can be natural solution, and for example oil-field water, fresh water etc. also can be artificial obtain solutions.
When carrying out Diagn simulated experiment that the multistage flows, open agitated reactor R1 and R2, put into dissimilar rock sample 01 and 02 respectively, then sealed reactor.Set the experimental temperature of agitated reactor R1 and R2, primary heater W1 and thermode through switch board K and computing machine M.Control valve guarantees that Diagn simulated experiment system is unimpeded.Regulate buffer brake controller P, confirm the working pressure of current system.Start highly pressurised liquid ram pump F2 and gases at high pressure pump F1,, respectively reaction solution and gas are pumped to primary heater W1 setting under experimental pressure and the flow velocity.In primary heater W1, the reaction solution of gas-liquid mixed is heated in advance, and flow among the agitated reactor R1.In agitated reactor R1, reaction solution is at design temperature t
1Following and rock sample 01 reacts, and forms reaction solution 001.The reaction solution 001 in-situ observation pond B1 that flows through utilizes HTHP original position spectral analysis technique that the reaction solution 001 that generates is carried out composition and content analysis.In addition, open valve V4, the interior reaction solution that generates 001 of agitated reactor R1 can flow among the stopple coupon Q1 under high drive, valve-off V4 after the completion of waiting to take a sample.Accomplish to after the online sampling of HTHP solution of agitated reactor R1, utilize conventional analysis equipment that solution among the stopple coupon Q1 is carried out composition and content analysis.Through spectral analysis of HTHP original position and the online sample analysis of HTHP, can know the attribute change of the reaction solution 001 in the agitated reactor R1.The reaction solution 001 of the generation among the B1 of in-situ observation pond of flowing through continues to flow; Get into thermode W2; After cooling (simulation diagenesis process medium fluid causes the geological condition of temperature reduction along moving on the crack) or heat (simulation diagenesis process medium fluid moves down the geological condition that causes temperature to increase along the crack); Flow among the agitated reactor R2, and in temperature t
2Condition under react with rock sample 02, form reaction solution 002.The reaction solution 002 in-situ observation pond B2 that flows through utilizes HTHP original position spectral analysis technique that reaction solution 002 is carried out composition and content analysis.In addition, open valve V11, the reaction solution 002 in the agitated reactor R2 can flow among the stopple coupon Q2 under high drive, valve-off V11 after the completion of waiting to take a sample.Accomplish to after the online sampling of HTHP solution of agitated reactor R2, utilize conventional analysis equipment that solution among the stopple coupon Q2 is carried out composition and content analysis.Reaction solution 002 continues to flow, and behind condenser W3, buffer brake controller P and gas-liquid separator S, flows into sample cup.So ongoing operation finishes until experiment.According to the experiment needs, can more multistage Diagn experimental simulation be provided through adding parts such as agitated reactor and thermode.
To core permeability real-time online determination experiment, earlier natural core post sample 03 is put into core holding unit R3, then seal rock heart clamp holder R3.Operation manual pump F3 gives core sample 03 certain confined pressure.Reaction solution can be the solution among the primary heater W1, also can be the Generation Liquid of agitated reactor R1 or agitated reactor R2.Through the heating arrangement of parcel core holding unit R3 housing, can set the experimental temperature of reaction solution.When reaction solution process natural core post sample 03; Core holding unit R3 two ends can produce pressure differential; Pressure detector P1 can record this pressure differential; Can calculate the generation water rock reaction absolute permeability value of core sample afterwards through this value, realize the transformation efficient of quantitative description fluid the rock core internal void.
In whole experiment, the more buried Tibetan of the representative environment that imposes a condition of agitated reactor R1 through chemical analysis reaction solution 001, can be known the chemical attribute of representing fluid under this environment.On behalf of shallow embedding, imposing a condition of agitated reactor R2 hide environment, through chemical analysis reaction solution 002, can know the chemical attribute of representing fluid under this environment.Temperature of reaction through setting between thermode W2 cooling and agitated reactor R1 and the agitated reactor R2 is poor; Can simulate geologic function (structure lifting) and cause the change of the environmental factors such as temperature of fluid; This device is the effective means of research diagenesis pattern, helps the diagenesis pattern that provides more correct.
Embodiment two:
Introduce the function of the utility model in Diagn research through a concrete experiment below.
In the petroclastic rock stratum; Can observe the carbonate cements of a large amount of existence; But be difficult to find lysigenous secondary pores by carbonate; The lysigenous space of aluminosilicates such as feldspar is the main body of secondary pores on the contrary, this phenomenon and carbonatite than silicic acid rock more diffluent generally be familiar with inconsistent.Geology man proposes the carbonate dissolution mode that falls back and explains above-mentioned phenomenon, and promptly the environment hidden of the shallow embedding of low temperature more helps the dissolving of carbonate mineral relatively, and proves through the calculation of thermodynamics mode.Yet there is more unfavorable factor in the mode that adopts calculation of thermodynamics concerning the diagenesis pattern proves and explains: 1) data of calculation of thermodynamics are many from the report in the document, and the authenticity of data remains to be discussed; 2) mathematics computing model is difficult to the geochemistry attribute and the behavior of accurate description natural bittern, and this is because the chemical composition of natural bittern is very complicated.
Utilizing the Diagn analogue experiment installation of the utility model can provide more near natural simulated conditions simulates the carbonate dissolution mode that falls back.In order to verify the carbonate dissolution mode that falls back; Present embodiment utilizes Diagn analogue experiment installation shown in Figure 12; The temperature of setting agitated reactor R1 is 200 ℃, and the temperature of agitated reactor R2 is 50 ℃, and reaction solution is a pure water; Rock sample adopts the particle of kalzit and soda feldspar respectively, and particle size range is 2.8～4.0mm.At first, control valve guarantees that agitated reactor R1 and agitated reactor R2 are connected state.Open agitated reactor R1 and R2, put into the kalzit and the soda feldspar particulate samples of equivalent respectively, then sealed reactor R1 and R2.Start highly pressurised liquid ram pump F2, with pure water with in the 0.1ml/min flow velocity injected system, treat that system outlet flows out water after, regulate buffer brake controller P, the working pressure of confirming current system is 25MPa.The experimental temperature of setting primary heater W1 and agitated reactor R1 is 200 ℃, and the experimental temperature of thermode W2 and agitated reactor 2 is 50 ℃.According to the calculating of solution flow rate and agitated reactor volume size, after 48 hours, solution reaches metastable state respectively in agitated reactor R1 and the agitated reactor R2 in sustained response.At this moment, open valve V4, Generation Liquid 001 can flow among the stopple coupon Q1 under high drive in the agitated reactor R1, valve-off V4 after the completion of waiting to take a sample.Accomplish to after the online sampling of HTHP solution of agitated reactor R1, utilize conventional analysis equipment that solution among the stopple coupon Q1 is carried out composition and content analysis.Open valve V11, Generation Liquid 002 can flow among the stopple coupon Q2 under high drive in the agitated reactor 2, valve-off V11 after the completion of waiting to take a sample.Accomplish to after the online sampling of HTHP solution of agitated reactor 2, utilize conventional analysis equipment that solution among the stopple coupon Q2 is carried out composition and content analysis.
According to the carbonate dissolution mode that falls back, can estimate that the calcium ion in the reaction solution 002 will be higher than the content in the reaction solution 001, the sodion in the reaction solution 002 will be lower than or be equivalent to the content in the reaction solution 001.Through this experiment, can verify that carbonate falls back dissolution mode in explaining the petroclastic rock stratum, exists the effect of these geological phenomenons of the secondary hole of aluminosilicate corrosion such as carbonate cements and feldspar in a large number.
The Diagn analogue experiment installation that the utility model provides; Comprise the heat resisting and pressure resisting agitated reactor that is interconnected through pipeline and valve more than two; Can simulate the different strata buring environment; Two the above stage water rock courses of reaction of completion under different temperature and pressure condition and maintenance fluid continuous flow situation realize continuous multistage water rock reaction experiment simulation, and this will help to make, and fluid chemistry character more approaches natural actual conditions in the experimental phase.In the experimentation of multistage continuous flow; Through temperature, pressure, fluid chemistry character, mineral composition and the flow performance that duplicates different phase in the diagenesis mechanism, can effectively simulate because Diagn such as the corrosion that the basin up-down causes temperature in the actual formation, pressure, fluid properties to change to be caused, gluing, explanations; Functions such as the utility model Diagn analogue experiment installation has high temperature high voltage resistant, heating is fast and temperature is even, stable pressurization, HTHP original position analytical solution composition, the online sampling of HTHP, the online detection permeability of HTHP; Not only can simulate the open flow system but also can simulate the water rock reaction under the static closed system, the Diagn that especially can simulate actual formation more truly and taken place through the experiment of multistage continuous stream; Combine HTHP solution compolision original position analytical technology and the online sampling technique of HTHP solution again; Can analyze the fluid properties of each elementary reaction Generation Liquid; So just realized experimental simulation, helped to provide diagenesis pattern more accurately the diagenesis pattern; Utilize core permeability evolution on-line measuring device; Can effectively simulate cover press and hot conditions under water rock reaction between true core and the fluid; And permeability value that can real-time, online detection rock core, realize the transformation efficient of quantitative description fluid to the rock core internal void.
According to Diagn simulation experiment study content, experiment both can be a cylindrical shape with rock sample, also graininess.Testing required high pressure is from fluid reservoir, to extract also compression of solution by the highly pressurised liquid ram pump to produce; Testing required high temperature is to realize through the high heat that the electrical heating cover that the uniform winding resistance wire that is wrapped in the agitated reactor outside is processed produces; Because resistance wire is a uniform winding, so temperature of reaction kettle is uniform.The temperature of whole device and pressure control both can be selected computer operation again through the control panel manual adjustments of switch board.The inlet end of agitated reactor connects primary heater or thermode, is used for heating in advance or the cooling reaction fluid, can reduce even avoid the temperature difference of fluid in agitated reactor.The outlet of agitated reactor is equipped with valve with the inlet two ends, and through control valve, agitated reactor can carry out static capping system also can provide the open flow reaction system.The endpiece of agitated reactor connects the online sampler of HTHP, and this device can obtain the Generation Liquid in the agitated reactor in course of reaction, be used for composition and content analysis; The endpiece of agitated reactor also connects the in-situ observation pond; Fibre-optical probe is connected the in-situ observation pond with spectrometer; In multistage continuous flow reaction system; The Generation Liquid of the agitated reactor in-situ observation pond of can flowing through at this moment, utilizes spectrometer can under HTHP original position condition, analyze the composition and the content of Generation Liquid in the observation pond.When fluid through in the core holding unit during rock core cylinder sample, the core holding unit two ends can produce pressure differential, this value can be recorded by the differential pressure detector that be equipped with at the core holding unit two ends, through this value can the computing rock sample permeability.The core holding unit confined pressure is that jar interior solution that boosts by manual pump compression clamper produces.In addition; Between a plurality of agitated reactors of diagenetic process analogue experiment installation and agitated reactor adopted the serial/parallel design that is connected with connected mode between the core holding unit; Under series connection; The Diagn analogue experiment installation can provide multistage continuous flow experimental situation, carries out multistage water rock reaction experiment simulation; Under parallelly connected state, agitated reactor or core holding unit be independent operating separately, single stage water rock reaction experiment simulation is provided, thereby increases work efficiency.And agitated reactor, valve, pipeline all adopt the inconel625 alloy material to process, and this just guarantees that whole device can high temperature resistant, high pressure resistant and strong alkali-acid resistance corrosion.
Above-described specific embodiment; Purpose, technical scheme and beneficial effect to the utility model have carried out further explain, it should be understood that the above is merely the specific embodiment of the utility model; And be not used in the protection domain that limits the utility model; All within the spirit and principle of the utility model, any modification of being made, be equal to replacement, improvement etc., all should be included within the protection domain of the utility model.
Claims (19)
1. Diagn analogue experiment installation; It is characterized in that described Diagn analogue experiment installation comprises control device, reaction solution feeding mechanism, multistage continuous stream reaction unit, solution compolision original position analytical equipment and core permeability evolution on-line measuring device;
Wherein, said control device is connected to said reaction solution feeding mechanism, said multistage continuous stream reaction unit and said core permeability evolution on-line measuring device; Said reaction solution feeding mechanism is connected to said multistage continuous stream reaction unit and said core permeability evolution on-line measuring device; Said multistage continuous stream reaction unit is connected in said solution compolision original position analytical equipment; Said core permeability evolution on-line measuring device is connected to said multistage continuous stream reaction unit and said reaction solution feeding mechanism;
Said control device is controlled said reaction solution feeding mechanism under pressure of setting and flow velocity; From outside abstraction reaction solution and reacting gas, and said reaction solution and reacting gas be sent to said multistage continuous stream reaction unit or said core permeability evolution on-line measuring device;
Said multistage continuous stream reaction unit comprises at least two agitated reactors, places rock to be measured in the said agitated reactor, and said rock to be measured and said reaction solution react, the reaction of formation Generation Liquid;
Said reaction solution flow into said solution compolision original position analytical equipment, under high-temperature and high-pressure conditions, analyzes the composition and the content of said reaction solution;
Said core permeability evolution on-line measuring device is used to place rock core to be measured, and reacts with said reaction solution or said reaction solution, is used for the permeability of the said rock core to be measured of real-time, online detection.
2. Diagn analogue experiment installation as claimed in claim 1 is characterized in that, said reaction solution feeding mechanism comprises:
Liquid phase pump is used to set the required flow velocity of experiment, and from outside abstraction reaction solution, and provides experiment required pressure through compression solution;
The gas phase pump is used under described pressure and flow velocity, extracts external reaction gas;
Primary heater is used for that said reaction solution and reacting gas are carried out the reaction solution that gas-liquid mixed generates and heats.
3. Diagn analogue experiment installation as claimed in claim 1 is characterized in that, said Diagn analogue experiment installation also comprises:
At least two solution on-line samplers, correspondence are connected at least two agitated reactors in the said multistage continuous stream reaction unit, are used for the online reaction solution that obtains said at least two agitated reactors under the HTHP.
4. Diagn analogue experiment installation as claimed in claim 1 is characterized in that, the said multistage connects the stream reaction unit and also comprises:
At least two hygrosensors, correspondence are connected in said at least two agitated reactors, and connect said control device, are used for detecting the temperature of the reaction solution of corresponding agitated reactor, and feed back to said control device and show.
5. Diagn analogue experiment installation as claimed in claim 3 is characterized in that, said Diagn analogue experiment installation also comprises:
At least two overvoltage protectors are arranged on the exit of said at least two agitated reactors, are used for being higher than when setting safety value system's releasing pressure automatically when the analogue experiment installation actual pressure.
6. Diagn analogue experiment installation as claimed in claim 1 is characterized in that, said solution compolision original position analytical equipment comprises at least two in-situ observation ponds, fibre-optical probe and spectroanalysis instruments;
Said at least two in-situ observation pond correspondences are connected in said at least two agitated reactors, and are connected with said spectroanalysis instrument through said fibre-optical probe, are used for composition and content that the HTHP original position is analyzed said corresponding reaction kettle for reaction Generation Liquid.
7. Diagn analogue experiment installation as claimed in claim 1 is characterized in that, said core permeability evolution on-line measuring device comprises core holding unit, manual pump and pressure detector; Wherein, said core holding unit is connected to said manual pump and said pressure detector;
Said core holding unit is used for the said rock core to be measured of clamping; Said manual pump is that said core holding unit provides preset confined pressure; Said pressure detector connects said control device, is used to measure the pressure reduction at said core holding unit two ends, and said pressure reduction is fed back to said control device, and real-time online detects the permeability of said rock core to be measured.
8. Diagn analogue experiment installation as claimed in claim 7 is characterized in that, said core holding unit comprises the clamper housing and boosts jar, the said jar said clamper housing of encirclement that boosts;
Said manual pump connects the said jar that boosts, and through the said solution that boosts between jar and the said clamper housing of said manual pump compression, the confined pressure of said clamper housing is provided; Said pressure detector is connected said clamper housing two ends, is used to measure the pressure reduction at said core holding unit two ends.
9. Diagn analogue experiment installation as claimed in claim 1 is characterized in that, the said multistage connects the stream reaction unit and also comprises:
First heating arrangement is used to said at least two agitated reactors heating, sets the temperature of the reaction solution in the said agitated reactor.
10. Diagn analogue experiment installation as claimed in claim 9 is characterized in that, said first heating arrangement is outer heating jacket, evenly wraps up said at least two agitated reactors, and connects said control device, and it comprises:
Resistance wire is used for heating;
The temperature control thermopair is used to control the heating-up temperature of said resistance wire;
Hygrosensor is used to detect the heating-up temperature of said resistance wire.
11. Diagn analogue experiment installation as claimed in claim 8 is characterized in that, said core permeability evolution on-line measuring device also comprises:
Second heating arrangement is used to said core holding unit heating, sets the experimental temperature of the reaction solution in the said core holding unit.
12. Diagn analogue experiment installation as claimed in claim 11 is characterized in that, said second heating arrangement is outer heating jacket, evenly wraps up the jar that boosts of said core holding unit, and connects said control device, and it comprises:
Resistance wire is used for heating;
The temperature control thermopair is used to control the heating-up temperature of said resistance wire;
Hygrosensor is used to detect the heating-up temperature of said resistance wire.
13. like each described Diagn analogue experiment installation of claim 1～12; It is characterized in that; Said control device comprises switch board and computing machine, is used to control and show that the temperature of the temperature of the reaction solution of said primary heater heating, said reaction kettle for reaction Generation Liquid and the confined pressure of said core holding unit reach the wherein temperature of reaction solution.
14. Diagn analogue experiment installation as claimed in claim 1 is characterized in that, is connected with thermode between said at least two agitated reactors, the temperature that is used for the reaction solution of said at least two agitated reactors is set to difference.
15. Diagn analogue experiment installation as claimed in claim 2 is characterized in that said reaction solution comprises fresh water, obtain solution or oil-field water.
16. Diagn analogue experiment installation as claimed in claim 2 is characterized in that said reacting gas comprises carbon dioxide or sulfuretted hydrogen.
17. Diagn analogue experiment installation as claimed in claim 1 is characterized in that, the maximum operating temperature of said core permeability evolution on-line measuring device is 170 ℃, and maximum working pressure (MOP) is 68MPa.
18. Diagn analogue experiment installation as claimed in claim 1 is characterized in that, the maximum operating temperature that the said multistage connects the stream reaction unit is 400 ℃, and maximum working pressure (MOP) is 100MPa.
19. Diagn analogue experiment installation as claimed in claim 1 is characterized in that said agitated reactor is processed by the inconel625 alloy material.
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| CN201120344178XU CN202305523U (en) | 2011-09-14 | 2011-09-14 | Diagenesis simulated experiment device |
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| CN102435716A (en) * | 2011-09-14 | 2012-05-02 | 中国石油天然气股份有限公司 | Diagenesis simulation experiment device |
| CN103076346A (en) * | 2012-12-31 | 2013-05-01 | 中国石油天然气股份有限公司 | Core flooding experimental method based on CT scanning |
| CN105403497A (en) * | 2015-12-08 | 2016-03-16 | 中国石油天然气股份有限公司 | Core permeability evolution simulation method and system |
| CN106018751A (en) * | 2016-07-01 | 2016-10-12 | 山东科技大学 | Carbonate mineral dolomitization simulation study system and application method thereof |
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| CN108181223A (en) * | 2017-12-26 | 2018-06-19 | 北京航空航天大学 | A kind of measuring device and measuring method for porous biomaterial permeability |
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| CN109801544A (en) * | 2019-01-31 | 2019-05-24 | 燕山大学 | A kind of carbonate rock forming environment condition simulation experimental provision and its application method |
| CN112903959A (en) * | 2021-01-19 | 2021-06-04 | 中国石油大学(北京) | Simulation experiment method and device for supercritical/subcritical static water rock reaction |
| CN112903959B (en) * | 2021-01-19 | 2022-04-08 | 中国石油大学(北京) | Simulation experiment method and device for supercritical/subcritical static water rock reaction |
| CN113903236A (en) * | 2021-10-22 | 2022-01-07 | 中铁二院工程集团有限责任公司 | Intelligent temperature and pressure control difference water-rock action contrast monitoring experimental device and experimental method thereof |
| CN114264608A (en) * | 2021-12-31 | 2022-04-01 | 河北地质大学 | Device and method for simulating pyrite growth mechanism |
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