CN102507879A - Foaming agent evaluation test device and method - Google Patents
Foaming agent evaluation test device and method Download PDFInfo
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- CN102507879A CN102507879A CN2011103912994A CN201110391299A CN102507879A CN 102507879 A CN102507879 A CN 102507879A CN 2011103912994 A CN2011103912994 A CN 2011103912994A CN 201110391299 A CN201110391299 A CN 201110391299A CN 102507879 A CN102507879 A CN 102507879A
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Abstract
The invention discloses a foaming agent evaluation test device and method. The foaming agent evaluation test device comprises a gas liquid mixing injection system, a foam generation system, a foam performance measuring system and a defoaming system, wherein the gas liquid mixing injection system consists of a high-pressure gas output component and a foaming liquid output component which are connected with each other through a communicating piece; the foam generation system is connected with the communicating piece; the foam performance measuring system is connected with the foam generation system and is provided with an observation window and a radar spotter; the foam performance measuring system and the foam generation system are placed in a high-temperature oven; and the defoaming system is connected with the foam performance measuring system through a back pressure valve.
Description
Technical field
The invention relates to a kind of oil development field, specifically is about a kind of foaming agent evaluation experimental device and method, and its foam volume and half life period that can be used for foaming agent in the foam flooding oil recovery is estimated.
Background technology
Aerated fluid is applied to the with a long history of oil-field development; Obtain significant progress aspect foam many in the oil-gas field developments such as water pumping gas production, sand-flushing, drilling well, profile control, water blockoff, acidifying, well cementing of cement and pressure break of the displacement of reservoir oil, moisture gas well; Obtained sure effect; A large amount of practices show that foam flooding can significantly improve sweep efficiency, can improve recovery ratio again, so it is more rising tertiary oil recovery method.
At present the static evaluation method of foaming agent has certain limitation: 1) Waring Blender high speed agitator, Luo Shi gas-development agent, air-flow method evaluation method can only the simulated normal pressure conditions; 2) Waring Blender high speed agitator, Luo Shi gas-development agent, air-flow method evaluation method foaming mode all do not meet stratum displacement of reservoir oil actual conditions; 3) the ZL201020242175.0 evaluating apparatus can only utilize visual inspection, causes experimental error big.
Summary of the invention
The objective of the invention is, a kind of foaming agent evaluation experimental device is provided, it can be estimated the HTHP foaming agent.
Another order of the present invention is carried, and a kind of foaming agent evaluation experimental method is provided, and it can be estimated the HTHP foaming agent.
Above-mentioned purpose of the present invention can adopt following technical proposal to realize:
A kind of foaming agent evaluation experimental device; Said experimental provision comprises: the gas-liquid injected system that is mixed; It is made up of gases at high pressure output precision and expanding foam solution output precision, is connected through a connectedness between said gases at high pressure output precision and the expanding foam solution output precision; The foam generation system, it is connected with said connectedness; The foaming properties measuring system; It is connected with said foam generation system; Said foaming properties measuring system and said foam generation system all are positioned in the high temperature oven, and said foaming properties measuring system comprises high-pressure-resistant vessel, radar is set above said high-pressure-resistant vessel surveys the liquid level appearance; The both sides of said high-pressure-resistant vessel are respectively equipped with view window, and the endpiece of said high-pressure-resistant vessel is equipped with first tensimeter; The froth breaking system, it is connected with said foaming properties measuring system through a check valve.
In preferred embodiment, said experimental provision comprises that is also pressed a backup system fully, and it is communicated with said check valve.
In preferred embodiment; The said backup system of pressing fully comprises manual pump; Said manual pump connects the piston container through the pump discharge valve, and the other end of said piston container connects said check valve through piston container outlet valve, and the other end of said piston container also is connected with second tensimeter.
In preferred embodiment; Said gases at high pressure output precision comprises gas cylinder, and the outlet of said gas cylinder connects the gas mass flow amount controller successively, the gas boosting pump; First valve and first ball-and-seat, said first ball-and-seat connects said connectedness away from an end of first valve.
In preferred embodiment; Said expanding foam solution output precision comprises expanding foam solution container and constant-flux pump; One end of said constant-flux pump stretches in the said expanding foam solution container; The other end connects second valve and second ball-and-seat successively, and said second ball-and-seat connects said connectedness away from an end of second valve.
In preferred embodiment, said foam generation system is that rock core adds and holds device, and said rock core adds to hold the actual rock core of oil reservoir is housed in the device.
In preferred embodiment, said froth breaking system comprises the foam-breaking agent container that fills foam-breaking agent, and said foaming properties measuring system is connected with the foam-breaking agent container; Said connectedness is a four-way spare, and first end of said four-way spare connects said gases at high pressure output precision, and second end connects said foam generation system, and the 3rd end connects said expanding foam solution output precision, and the 4th end also connects a discharge valve.
The invention allows for a kind of foaming agent evaluation experimental method, it comprises step:
A, through gases at high pressure output precision output gases at high pressure, simultaneously through expanding foam solution output precision output expanding foam solution;
B, said gases at high pressure and expanding foam solution are imported through connectedness in the foam generation system that is positioned in the high temperature oven together, produce the HTHP foam;
C, measure said HTHP foam through the foaming properties measuring system that is positioned in the said high temperature oven; Wherein, Said foaming properties measuring system comprises high-pressure-resistant vessel, radar is set above said high-pressure-resistant vessel surveys the liquid level appearance, and the both sides of said high-pressure-resistant vessel are respectively equipped with view window; The endpiece of said high-pressure-resistant vessel is equipped with first tensimeter, and said radar is surveyed the liquid level appearance HTHP foaming agent character is estimated;
D, the foaming agent of having estimated flow into the froth breaking system via a check valve, to carry out froth breaking.
In preferred embodiment; Among the said step D; Said check valve is connected with one and presses backup system fully, and when the force value of the endpiece of said foaming properties measuring system during greater than the said force value of pressing backup system fully and being kept, said check valve is opened; When the force value of the endpiece of said foaming properties measuring system during less than the said force value of pressing backup system fully and being kept, said check valve cuts out.
The characteristics and the advantage of the embodiment of the invention are: it is through gases at high pressure output precision output gases at high pressure; Gases at high pressure and expanding foam solution are imported in the foam generation system simultaneously; Because foam generation system and foaming properties measuring system all are positioned in the high temperature oven; Make gases at high pressure and expanding foam solution in the foam generation system, can produce the HTHP foam, thereby can simulate the HTHP formation condition; And the foaming properties measuring system can be estimated HTHP foaming agent character comparatively exactly owing to placing high temperature oven, make the foaming properties measuring system under hot environment, to measure the HTHP foam.Therefore, the embodiment of the invention can be used for foaming agent foam volume and half life period evaluation in the foam flooding oil recovery.
Description of drawings
In order to be illustrated more clearly in the technical scheme in the embodiment of the invention; The accompanying drawing of required use is done to introduce simply in will describing embodiment below; Obviously, the accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structural representation of the foaming agent evaluation experimental device of the embodiment of the invention.
Embodiment
To combine the accompanying drawing in the embodiment of the invention below, the technical scheme in the embodiment of the invention is carried out clear, intactly description, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, 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 present invention's protection.
Referring to shown in Figure 1, the foaming agent evaluation experimental device that the embodiment of the invention proposes, it comprises the gas-liquid injected system 1 that is mixed, foam generation system 2, foaming properties measuring system 3 and froth breaking system 4.The said gas-liquid injected system 1 that is mixed is made up of gases at high pressure output precision 11 and expanding foam solution output precision 12, is connected through a connectedness 5 between said gases at high pressure output precision 11 and the expanding foam solution output precision 12.Said foam generation system 2 is connected with said connectedness 5.Said foaming properties measuring system 3 is connected with said foam generation system 2, and said foaming properties measuring system 3 all is positioned in the high temperature oven 6 with said foam generation system 2.Said froth breaking system 4 is connected with said foaming properties measuring system 3 through a check valve 41.
Said foaming properties measuring system 3 comprises high-pressure-resistant vessel 31; Radar is set above said high-pressure-resistant vessel 31 surveys liquid level appearance 32; The both sides of said high-pressure-resistant vessel 32 are respectively equipped with view window 33; The endpiece of said high-pressure-resistant vessel 31 is equipped with the force value that first tensimeter, 34, the first tensimeters 34 can read the endpiece of foaming properties measuring system 3.In the present embodiment; The foaming agent that in foam generation system 2, produces flows in the high-pressure-resistant vessel 31, but the situation through the foaming agent of view window 33 Direct observation in high-pressure-resistant vessel 31, and high-pressure-resistant vessel can be at its two-sided view window 33 that is provided with; The material of view window 33 can be high pressure resistant, resistant material; Gas medium can be to have corrosive gas, like carbon dioxide, and air; Radar is surveyed liquid level appearance 32 accurately probe gas and foam interface, foam and liquid surface, and it is high to measure bubble exactly, the error of having avoided artificial reading to cause, thus reach the accurate measurement of the foam volume of gas-development agent.
Wherein, Said connectedness 5 can be four-way spare, and first end of said four-way spare connects gases at high pressure output precision 11, the second ends and connects foam generation system 2; The 3rd end connects expanding foam solution output precision 12; The 4th end also can connect a discharge valve 51, and experiment finishes, and opens discharge valve 51 and can gases at high pressure and expanding foam solution be discharged.
The foaming agent evaluation experimental method of the embodiment of the invention comprises step:
A, through gases at high pressure output precision 11 output gases at high pressure, simultaneously through expanding foam solution output precision 12 output expanding foam solutions;
B, said gases at high pressure and expanding foam solution are imported through connectedness 5 in the foam generation system 2 that is positioned in the high temperature oven 6 together, produce the HTHP foam;
C, measure said HTHP foam through the foaming properties measuring system that is positioned in the said high temperature oven; The radar of said foaming properties measuring system is surveyed the liquid level appearance HTHP foaming agent character is estimated, and what estimate herein is the foam volume and the half life period of foaming agent;
D, the foaming agent of having estimated flow into froth breaking system 4 via a check valve 41, to carry out froth breaking; Wherein, When the pressure of the endpiece of foaming properties measuring system 3 during less than setting value; Check valve 41 cuts out, up to the pressure of the endpiece of foaming properties measuring system 3 during greater than setting value, and check valve 41 start or stop; So that the foaming agent in the foaming properties measuring system 3 flows in the froth breaking system 4, keep pressure stable thereby make in the foaming properties measuring system 3.
In the embodiment of the invention; Through gases at high pressure output precision 11 output gases at high pressure; Gases at high pressure and expanding foam solution are imported in the foam generation system 2 simultaneously; Because foam generation system 2 all is positioned in the high temperature oven 6 with foaming properties measuring system 3, makes gases at high pressure and expanding foam solution in foam generation system 2, can produce the HTHP foaming agent, thereby can simulate the HTHP formation condition; And foaming properties measuring system 3 can be estimated the HTHP foaming agent comparatively exactly owing to placing high temperature oven 6, make foaming properties measuring system 3 under hot environment, to measure the HTHP foaming agent.Therefore, the embodiment of the invention can be used for foaming agent foam volume and half life period evaluation in the foam flooding oil recovery.
According to an embodiment of the invention, said experimental provision comprises that is also pressed a backup system 7 fully, and it is communicated with said check valve 41.Pressing backup system 7 fully is to be used for making the pressure of the gas-development agent of foaming properties measuring system 3 remaining the force value of pressing backup system 7 to provide fully; Hypertonia in foaming properties measuring system 3; Promptly surpass when pressing the force value of backup system 7 fully, check valve 41 is opened, and makes in some the inflow froth breaking system 4 of foam in the foaming properties measuring system 3; When the force value in foaming properties measuring system 3 was less than or equal to the force value of pressing backup system 7 fully, check valve 41 cut out.
Specifically be; The said backup system 7 of pressing fully comprises manual pump 71; Said manual pump 71 connects piston container 73 through pump discharge valve 72; The other end of said piston container 73 connects said check valve 41 through piston container outlet valve 74, and the other end of said piston container 73 also is connected with second tensimeter 75.Furthermore, at first open pump discharge valve 72 and piston container outlet valve 74, through 73 pressurizations of 71 pairs of piston containers of manual pump; When treating that the pressure of piston container 73 brought up to required force value (for example 20MPa), shut-down operation manual pump 71 cuts out pump discharge valve 72 simultaneously; Open piston container outlet valve 74; This moment press fully backup system 7 piston container 73 force value (20MPa) and remaining, wherein, the force value of piston container 73 can read through second tensimeter 75.
Said froth breaking system 4 comprises the foam-breaking agent container that fills foam-breaking agent, and the gas-development agent that comes out from foaming properties measuring system 3 gets into the foam-breaking agent container, can carry out the froth breaking operation.
According to an embodiment of the invention; Said gases at high pressure output precision 11 comprises gas cylinder 111; The outlet of said gas cylinder 111 connects gas mass flow amount controller 112 successively; Gas boosting pump 113, the first valves 114 and first ball-and-seat 115, said first ball-and-seat 115 connects said connectedness 5 away from an end of first valve 114.In the present embodiment, after opening gas cylinder 111, the gas that comes out from gas cylinder 111 is via gas mass flow amount controller 112, and gas boosting pump 113, the first valves 114, the first ball-and-seats 115 flow in the foam generation system 2 with connectedness 5.Wherein, gas mass flow amount controller 112 can be used for the flow velocity of pilot-gas; Gas boosting pump 113 can make gaseous tension bring up to required force value; The output of the gas on the gases at high pressure output precision 11 can opened or close to first valve 114; First ball-and-seat 115 can guarantee that gas can only oppositely can't circulate from gas cylinder 111 folk prescriptions to flowing to connectedness 5.
Said expanding foam solution output precision 12 comprises expanding foam solution container 121 and constant-flux pump 122; One end of said constant-flux pump 122 stretches in the said expanding foam solution container 121; The other end connects second valve 123 and second ball-and-seat 124 successively, and said second ball-and-seat 124 connects said connectedness 5 away from an end of second valve 123.In the present embodiment, constant-flux pump 122 flows into the expanding foam solution in the expanding foam solution container 121 in the foam generation system 2 with connectedness 5 via second valve, 123, the second ball-and-seats 124.Wherein, constant-flux pump 122 can be used for the liquid with precise control flow velocity; The output of liquid on the expanding foam solution output precision 12 can opened or close to second valve 123; Second ball-and-seat 124 can guarantee that liquid can only oppositely can't circulate from expanding foam solution container 121 folk prescriptions to flowing to connectedness 5.In addition, second ball-and-seat 124 and first ball-and-seat 115 can be avoided the gas-liquid channelling that causes owing to pressure imbalance, can better control injection mode, can estimate gas-liquid with annotating, and gas-liquid is alternately injected gas-development agent character; That is to say; Second ball-and-seat 124 and first ball-and-seat 115 can guarantee that the gases at high pressure in the gases at high pressure output precision 11 only flow in the foam generation system 2; And can not flow in the expanding foam solution output precision 12; The expanding foam solution of guaranteeing expanding foam solution output precision 12 simultaneously only flows in the foam generation system 2, and can not flow in the gases at high pressure output precision 11.
Said foam generation system 2 can be rock core and adds and hold device, and said rock core adds to hold the actual rock core of oil reservoir is housed in the device, thereby possesses and the actual foam flooding same formation condition that recovers the oil, and makes foaming agent estimate closing to reality more.That is to say that present embodiment adopts gas to replace existing frother through formation core, meets displacement process more.
The characteristics and the advantage of the embodiment of the invention are:
1, the simulation maximum oil is hidden pressure 40MPa;
2, the simulating oil deposit maximum temperature is 250 ℃;
3, rock core adds to hold the actual rock core of oil reservoir is housed in the device, makes this experimental provision possess and the actual foam flooding same foaming mode of recovering the oil;
4, possess radar and survey the liquid level function, it is high accurately to measure bubble;
5, the existence of first and second ball-and-seat 115,124 makes this experimental provision possess injection mode flexibly, annotate but gas-liquid is same, but also gas-liquid is alternately annotated;
6, possess gas mass flow amount controller 112 and high precision constant-flux pump 122, can accurately measure gas, liquid injection rate, to reach different gas liquid ratios.
7, this experimental provision can be simulated the HTHP formation condition owing to adapt to (1); (2) can simulated formation the foaming mode; (3) possess these high requirement that foaming agent screening and assessment is proposed of accurate metering system, so can be used to estimate the foaming agent that different oil field geologic conditions needs different performance.
The above is merely several embodiments of the present invention, and those skilled in the art can carry out various changes or modification to the embodiment of the invention and do not break away from the spirit and scope of the present invention according to application documents are disclosed.
Claims (9)
1. foaming agent evaluation experimental device is characterized in that said experimental provision comprises:
The gas-liquid injected system that is mixed, it is made up of gases at high pressure output precision and expanding foam solution output precision, is connected through a connectedness between said gases at high pressure output precision and the expanding foam solution output precision;
The foam generation system, it is connected with said connectedness;
The foaming properties measuring system; It is connected with said foam generation system; Said foaming properties measuring system and said foam generation system all are positioned in the high temperature oven, and said foaming properties measuring system comprises high-pressure-resistant vessel, radar is set above said high-pressure-resistant vessel surveys the liquid level appearance; The both sides of said high-pressure-resistant vessel are respectively equipped with view window, and the endpiece of said high-pressure-resistant vessel is equipped with first tensimeter;
The froth breaking system, it is connected with said foaming properties measuring system through a check valve.
2. foaming agent evaluation experimental device according to claim 1 is characterized in that, said experimental provision comprises that is also pressed a backup system fully, and it is communicated with said check valve.
3. foaming agent evaluation experimental device according to claim 2; It is characterized in that; The said backup system of pressing fully comprises manual pump; Said manual pump connects the piston container through the pump discharge valve, and the other end of said piston container connects said check valve through piston container outlet valve, and the other end of said piston container also is connected with second tensimeter.
4. foaming agent evaluation experimental device according to claim 2; It is characterized in that; Said gases at high pressure output precision comprises gas cylinder, and the outlet of said gas cylinder connects the gas mass flow amount controller successively, the gas boosting pump; First valve and first ball-and-seat, said first ball-and-seat connects said connectedness away from an end of first valve.
5. foaming agent evaluation experimental device according to claim 2; It is characterized in that; Said expanding foam solution output precision comprises expanding foam solution container and constant-flux pump; One end of said constant-flux pump stretches in the said expanding foam solution container, and the other end connects second valve and second ball-and-seat successively, and said second ball-and-seat connects said connectedness away from an end of second valve.
6. foaming agent evaluation experimental device according to claim 1 is characterized in that, said foam generation system is that rock core adds and holds device, and said rock core adds to hold the actual rock core of oil reservoir is housed in the device.
7. foaming agent evaluation experimental device according to claim 1 is characterized in that, said froth breaking system comprises the foam-breaking agent container that fills foam-breaking agent, and said foaming properties measuring system is connected with the foam-breaking agent container; Said connectedness is a four-way spare, and first end of said four-way spare connects said gases at high pressure output precision, and second end connects said foam generation system, and the 3rd end connects said expanding foam solution output precision, and the 4th end also connects a discharge valve.
8. foaming agent evaluation experimental method is characterized in that said experimental technique comprises step:
A, through gases at high pressure output precision output gases at high pressure, simultaneously through expanding foam solution output precision output expanding foam solution;
B, said gases at high pressure and expanding foam solution are imported through connectedness in the foam generation system that is positioned in the high temperature oven together, produce the HTHP foam;
C, measure said HTHP foam through the foaming properties measuring system that is positioned in the said high temperature oven; Wherein, Said foaming properties measuring system comprises high-pressure-resistant vessel, radar is set above said high-pressure-resistant vessel surveys the liquid level appearance, and the both sides of said high-pressure-resistant vessel are respectively equipped with view window; The endpiece of said high-pressure-resistant vessel is equipped with first tensimeter, and said radar is surveyed the liquid level appearance HTHP foaming agent character is estimated;
D, the foaming agent of having estimated flow into the froth breaking system via a check valve, to carry out froth breaking.
9. foaming agent evaluation experimental method according to claim 8; It is characterized in that among the said step D, said check valve is connected with one and presses backup system fully; When the force value of the endpiece of said foaming properties measuring system during greater than the said force value of pressing backup system fully and being kept; Said check valve is opened, and when the force value of the endpiece of said foaming properties measuring system during less than the said force value of pressing backup system fully and being kept, said check valve cuts out.
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