CN103104254B - Multifunctional oil reservoir simulation experiment device and experiment method thereof - Google Patents
Multifunctional oil reservoir simulation experiment device and experiment method thereof Download PDFInfo
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- CN103104254B CN103104254B CN201310026715.XA CN201310026715A CN103104254B CN 103104254 B CN103104254 B CN 103104254B CN 201310026715 A CN201310026715 A CN 201310026715A CN 103104254 B CN103104254 B CN 103104254B
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Abstract
The invention discloses a multifunctional oil reservoir simulation experiment device. The device comprises a cubic vessel, a simulation experiment pit-shaft (1), a multi-parameter sensor (2), and cable connectors (3). The cubic vessel comprises a box body (4) and a cover plate (5), wherein a cavity is formed inside the box body (4), a plurality of inserting holes (6) are distributed in a base plate of the box body (4), partition plates (7) are evenly arranged all around each inserting holes (6), connecting holes are formed in the side wall of the box body (4), the pit-shaft (1) of a simulation pit and the wire cable connectors (3) are installed inside different inserting holes, and the multi-parameter sensor (2) is placed inside the cavity. The invention further discloses an experiment method using the device. The device and the system have the advantages of being capable of simulating various pit conditions, even in distribution of pressure in the bottom portion of the box body, also capable of simulating sites where stimulation pressure is distributed unevenly, capable of measuring flow in any small sections inside any pit-shaft, genuine and believable in experiment result, and capable of intuitively observing bottom water rising trends.
Description
Technical field
The present invention relates to oil development technical field, particularly a kind of Multifunctional oil reservoir analogue experiment installation and experimental technique thereof.
Background technology
A large amount of bottom water reservoirs is found successively in recent years in oil-gas field development field.For the bottom water reservoir of exploitation end water energy abundance, after going into operation in oil field, along with the extraction of crude oil, strata pressure reduces gradually, end water energy is greater than oil reservoir energy, simultaneously, due to the difference of profit viscosity, end water progresses into oil reservoir, and end water in recovery process is once breakthrough rises to pit shaft, and water ratio in oil well just can rise fast, crude output is caused to decline rapidly, seriously have impact on the normal production of oil well, and cause water treatment expense to increase and development cost rising, oil reservoir exploitation benefit is deteriorated.Bottom water cone (ridge) enters to become to affect the key factor of bottom water reservoir development effectiveness, therefore reasonable pressure, the reasonable production of bottom water reservoir oil well is studied, oil well bottom water cone (ridge) the precession state of monitoring bottom water reservoir, the water breakthrough time of prediction oil well, evaluate the water plugging effect that artificial blocking agent forms artificial dividing plate in research water breakthrough rule and pressure cone measure and just seem particularly important and necessary.
Because oil reservoir is in earth formation deep, researcher can not enter process to the bottom water cone of actual oil well (ridge) and carry out direct vision, therefore only have, by the mode of laboratory experiment, approximate simulation is carried out to bottom water cone (ridge) precession state, make bottom water cone (ridge) enter process implementation artificially to reproduce, by physical model, dynamic analog is carried out to the development process of bottom water reservoir, the seepage flow characteristics of actual oil reservoir or oil well being reproduced more truly, providing important evidence for formulating bottom water reservoir development strategy, different development phases counter-measure and steady oil control water scheme.
Though the domestic and international phenomenon to straight well water cone, single Zhi Shuiping well water ridge has large quantifier elimination at present, but the structure well comparatively complicated to other, the physical analogy also rare report of the branch horizontal well of spread as any in three dimensions, predict the complex mechanism well capacity of the various form of bottom water reservoir, study its water cone, water ridge, critical output, critical pressure differential, water breakthrough time formulate rational working system according to this, evaluate preferred artificial dividing plate water plugging effect, such oil reservoir of Efficient Development has prior meaning.
The people such as Aulie have done the two-dimensional analog experiment of water-oil phase in 1993, the visual dynamic process showing end liter waterborne.Comply with one's wishes and describe for research level well withdrawal mechanism and the 3 D High Temperature High Pressure Horizontal Well Physical Modelling System of raising recovery mechanism evaluating horizontal well or other complex structural well in river in 1999.Within 2003, Pei Bailin describes comparatively easy horizontal well three-dimensional physical model device.The people such as king family's Lu in 2007 have employed electro-photographic surveillance technology at research water chi chung.Zhu Yu in 2008 is two etc. utilizes special bottom water reservoir sandstone micromodel, has carried out simulation laboratory test research to the negative pressure exploitation of bottom water reservoir later regulation and early water block-off.
Both at home and abroad about the physical model test of horizontal well, be broadly divided into three types: Static Electro simulated test, two-dimentional dynamic analog test, Three Dimensional Dynamic Simulation are tested.The physical Model Study of liter waterborne at the bottom of bottom water reservoir is limited to the dynamic physical simulation of two and three dimensions.
Static Electro simulated experiment is mainly through water power principle of similitude Simulated Water horizontal well, branch levels well capacity.Bottom water reservoir water drive oil oil-water interfaces dynamic changing process cannot be simulated.
Two dimension dynamic analog, adopts visual organic glass dull and stereotyped more, between the parallel flat that two pieces of relative distance is less, fill simulation medium.For ease of visual observation, two parallel-plate spacings are not easily excessive, and filled media also will meet printing opacity requirement.Glass plate pressure-bearing is limited on the one hand; On the other hand filled media type and to be cementingly restricted, difficultly mates with reservoir porous actual attribute; And there is gap in three-dimensional actual production in two-dimensional analog and all kinds of producing well.
Three-Dimensional Dynamic physical analogy model volume is large, medium many employings sandpack column, and horizontal well carried out by the sandpack column that structure the reservoir different rhythm, non-homogeneity etc. represent reservoir change, and the note of horizontal well under interior various flooding patterns adopts physical analogy.The two-dimensional device that three-dimensional simulation device is simpler and cruder, in simulated environment diversity, and the collection accuracy of the data such as pressure, temperature, flow all makes moderate progress.There is difference in such device model back-up sand medium and actual oil reservoir, only can accomplish the analyses such as extraction fluid is moisture, physical property to the dynamic monitoring of simulation well profit, lacks effective means to the monitoring of three-dimensional saturation field.
Application number is 200910019350.1, application publication number is CN101696626A, at on 04 21st, 2010 Shen Qing Publication day, name was called the patent of multifunctional physical model test device of horizontal well, mainly in applying in oil exploitation anti-sand process technology, effective means is lacked to the monitoring of the three-dimensional saturation ratio of profit.
Application number is 201210071679.4, application publication number is CN102587894A, at on 07 18th, 2012 Shen Qing Publication day, name is called that the patent of horizontal well seepage experimental device relates to a kind of simulation and research level well surrounding formation to the horizontal well seepage experimental device of horizontal wellbore seepage flow.For analyzing varying level well completion mode to the impact of horizontal well surrounding formation seepage flow.This device still only belongs to the device of transparent visual, its main detection scope is only limitted to seepage flow access panel, filled media is subject to light transmission and strictly limits, under it is mainly used in simulating different completion mode, flow event around demonstration pit shaft, can not form in strict accordance with similarity criterion research level well, branch levels shaft bottom liter waterborne critical (startup) condition that water bores (ridge).
Mostly existing reservoir simulator is that narrow application range, poor universality, the data of acquisition are less for the specific mining type of certain class or the analogue means of adaptation single hole condition that designs separately for the specific technical barrier of certain class.Consider the complexity of concrete reservoir condition, be therefore difficult to find a kind of physical model can be applicable to all oil reservoir situations and the production feature of oil well.Common processing method is for a certain concrete oil reservoir situation, by similarity criterion, sets up corresponding scale smaller model to carry out physical simulation experiment research.Current bottom water coning analogue experiment installation is mainly flat plate model, and this type of physical model is made up of the poly (methyl methacrylate) plate of two pieces of same sizes, and it is only a two dimensional model, and back-up sand medium and reservoir rocks porous media exist larger difference.
At present for how to set up in simulation process can be high with reservoir property degree of conformity filled media, how to simulate specific reservoir boundary condition, how to monitor threedimensional model under horizontal well, branch horizontal well production function, the checkout gears such as end water forms dynamic changing process that in water ridge process, model is moisture everywhere, how to reduce pressure, moisture are to the interference of simulation model itself and how to keep the wire of these monitoring devices problem such as sealing in simulation model to be badly in need of solution.Design can the experimental facilities of Reality simulation stratum oil well water breakthrough rule under different operating system better, reduces experimental error as far as possible, becomes very crucial problem.
Through literature survey, according to the accurate side of strict physical similarity and can more truly reflecting in the filling physical model of porous media attribute, reach dynamic monitoring three-dimensional saturation ratio, pressure distribution, the thinking that the three-dimensional physical simulation device of the complex structural wells such as Simulated Water horizontal well, branch horizontal well is relevant, product, process design method have no report.
Summary of the invention
The object of the invention is to the shortcoming overcoming prior art, provide a kind of and can simulate multiple hole condition, many kinds of parameters foundation is provided, the flow of segment arbitrarily in any pit shaft can be recorded, experimental result is more genuine and believable, observe Multifunctional oil reservoir analogue experiment installation and experimental technique thereof more intuitively.
Object of the present invention is achieved through the following technical solutions: a kind of Multifunctional oil reservoir analogue experiment installation, it comprises cubic container, simulated experiment pit shaft, multi-parameter sensor and cable connector, described cubic container comprises casing and is arranged at the cover plate at casing top, cavity volume is provided with in casing, the base plate of casing is evenly equipped with the access aperture of multiple connection cavity volume and casing space outerpace, the surrounding of each access aperture is provided with around the access aperture dividing plate of a week, dividing plate is fixedly connected with base plate, dividing plate and base plate form the cavity of upper shed, the sieve plate be arranged in parallel with base plate is provided with in cavity, cavity is divided into upper and lower two parts by sieve plate, the sidewall of casing is provided with the connecting hole being communicated with cavity volume and casing space outerpace, access aperture and connecting hole are internal thread hole, the sidewall of casing is at least provided with two access aperture, simulation well pit shaft and cable connector are all installed in different access aperture, multi-parameter sensor is arranged in cavity volume inside, and multi-parameter sensor is connected with cable connector by wire.
Described dividing plate comprises mutual vertically disposed diaphragm and midfeather, base plate is provided with the uniform midfeather of the uniform diaphragm in multiple interval and multiple interval, the cavity that diaphragm, midfeather and base plate are formed is cubic type, and access aperture is positioned on the base plate of cavity.
The surrounding of described casing outside is also provided with heater, and described heater is hot water pipeline or heating wire
Be provided with pressure source extension tube attached in described access aperture, pressure source extension tube attached is three-port structure, and one end of pressure source extension tube attached is threaded with access port, and the other two ends of pressure source extension tube attached are all connected with a ball valve.
The terminal part that described simulated experiment pit shaft is positioned at cavity volume inside is arranged horizontally, and the tube wall of terminal part is furnished with multiple through hole.
Described terminal part is also provided with branched pipe, and branched pipe is also arranged horizontally, and the tube wall of branched pipe is also furnished with multiple through hole.
Described simulated experiment pit shaft is positioned at the terminal part of cavity volume inside for vertically arranging.
Also flow measurement tool for small section is provided with in described simulated experiment pit shaft, described flow measurement tool for small section comprises central tube, shunt head and outer endless tube, the end of central tube is provided with circular baffle plate, shunt head is cylinder cast, shunt head is set in outside the central tube at baffle plate rear, the excircle of the end of outer endless tube is provided with annular retaining ring, outer shroud pipe box is loaded on outside the central tube at shunt head rear, shunt head is provided with circular fin A near one end of baffle plate, shunt head is provided with circular fin B near one end of back-up ring, sealing ring A is provided with between circular fin A and baffle plate, sealing ring B is provided with between circular fin B and back-up ring, the position that baffle plate is corresponding with the end face of shunt head is circumferentially evenly equipped with axially extending bore A, shunt head is circumferentially evenly equipped with axially extending bore B, back-up ring is circumferentially evenly equipped with axially extending bore C, the middle part of shunt head is distributary division, distributary division is circumferentially evenly equipped with radial direction through hole A, radial direction through hole A is not communicated with mutually with axially extending bore B, and distributary division is provided with vertically many row's radial direction through hole A, central tube corresponding with distributary division position on be circumferentially evenly equipped with radial direction through hole B, and central tube corresponding with distributary division position on be also provided with many row's radial direction through hole B vertically, the left side of distributary division, sealing ring C is provided with between shunt head and central tube, the right side of distributary division, sealing ring D is provided with between shunt head and central tube, sealing ring E is provided with between outer endless tube and central tube.
Adopt a kind of experimental technique of Multifunctional oil reservoir analogue experiment installation, it comprises the following steps:
The cover plate of S1, unlatching casing, carries out gluing and the process of capping sand by the inwall of wall box, simulated experiment pit shaft outer wall, multi-parameter sensor surface and conductive line surfaces;
The on-the-spot cementing porous media artificial core of S2, layering back-up sand or layering;
S3, while the on-the-spot cementing porous media artificial core of layering back-up sand or layering, at the preset multi-parameter sensor processed in step sl of point aspect;
S4, while the on-the-spot cementing porous media artificial core of layering back-up sand or layering, arrange casing programme or well pattern composition;
S5, cover testing fixture overall tightness after cover plate;
S6, relevant treatment is carried out in back-up sand or cementing porous media artificial core, described relevant treatment is saturated oils process or saturation water process;
S7, carry out the simulation of oil reservoir, and utilize flow measurement tool for small section to extract certain section of fluid parameter in well.
When needs carry out overall temperature control time, by the heater of casing surrounding, casing to be heated, isothermal holding.
The present invention has the following advantages:
The present invention can simulate multiple hole condition, especially be applicable to the reservoir system of simulation bottom water coning, because bottom is provided with dividing plate, each dividing plate side is provided with independently inlet in chamber, can make bottom half pressure distribution evenly, also can the occasion of simulated pressure non-uniform Distribution.
The temperature of array point position in whole analog unit, pressure and resistivity can be recorded by multi-parameter sensor in simulation process, thus provide parameter foundation for analyzing oil-water interfaces.
Flow measurement tool for small section of the present invention can record the flow of segment arbitrarily in any pit shaft, thus provides parameter foundation for the simulation of more deep research digital reservoir.
The scene that the present invention can simulate comprises: the multiple hole conditions such as bottom water reservoir straight well water cone, horizontal well water ridge, branch's well water ridge and water prod cast are intended, water injection of horizontal well exploitation simulation, horizontal well steam flooding exploitation simulation, the simulation of straight well waterflooding extraction, straight well steam flooding exploitation simulation.
The present invention can carry out experimental study more accurately to the rising rule of the impact of horizontal wellbore pressure drop and end water, and experimental result is more genuine and believable, can observe end liter waterborne more intuitively dynamic, have great importance to the exploitation of bottom water reservoir.
Accompanying drawing explanation
Fig. 1 is the structural representation of Simulated Water horizontal well of the present invention
Fig. 2 is inlet and dividing plate installation site schematic diagram on box bottom of the present invention
Fig. 3 is sieve plate installing structure schematic diagram of the present invention
Fig. 4 is multi-parameter sensor mounting structure schematic diagram of the present invention
Fig. 5 is the structural representation of dummy level Multilateral Wells of the present invention
Fig. 6 is the structural representation of Simulated Water horizontal well waterflooding extraction of the present invention
Fig. 7 is the structural representation of Simulated Water horizontal well steam flood of the present invention oil exploitation
Fig. 8 is the structural representation that the present invention simulates straight well waterflooding extraction
Fig. 9 is the structural representation that the present invention simulates the exploitation of straight well steam flooding
Figure 10 is the structural representation of flow measurement tool for small section of the present invention
Figure 11 Figure 10 is along the sectional view in A-A cross section
Figure 12 stretches into the structural representation of simulated experiment pit shaft inside when being flow measurement tool for small section of the present invention use
Figure 13 is the structural representation under flow measurement tool for small section duty of the present invention
In figure, 1-simulated experiment pit shaft, 2-multi-parameter sensor, 3-cable connector, 4-casing, 5-cover plate, 6-access aperture, 7-dividing plate, 8-sieve plate, 9-branched pipe, 10-simulation oil well pit shaft, 11-simulates water injection well pit shaft, 12-simulates steamed well pit shaft, 13-pressure source extension tube attached, 14-ball valve, 15-central tube, 16-shunt head, the outer endless tube of 17-, 18-baffle plate, 19-back-up ring, 20-circular fin A, 21-circular fin B, 22-sealing ring A, 23-sealing ring B, 24-axially extending bore A, 25-axially extending bore B, 26-axially extending bore C, 27-radial direction through hole A, 28-radial direction through hole B, 29-sealing ring C, 30-sealing ring D, 31-sealing ring E.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention will be further described, and protection scope of the present invention is not limited to the following stated:
As shown in Figure 1, a kind of Multifunctional oil reservoir analogue experiment installation, it comprises cubic container, simulated experiment pit shaft 1, multi-parameter sensor 2 and cable connector 3, described cubic container comprises casing 4 and is arranged at the cover plate 5 at casing 4 top, cavity volume is provided with in casing 4, as shown in Figure 2, the base plate of casing 4 is evenly equipped with the access aperture 6 of multiple connection cavity volume and casing 4 space outerpace, the surrounding of each access aperture 6 is provided with around the access aperture dividing plate of 6 one weeks 7, dividing plate 7 is fixedly connected with base plate, as figure dividing plate 7 and base plate form the cavity of upper shed, the sieve plate 8 be arranged in parallel with base plate is provided with in cavity, cavity is divided into upper and lower two parts by sieve plate 8, the sidewall of casing 4 is provided with the connecting hole being communicated with cavity volume and casing 4 space outerpace, access aperture 6 and connecting hole are internal thread hole, the sidewall of casing 4 is at least provided with two access aperture 6, simulation well pit shaft and cable connector 3 are all installed in different access aperture 6, as shown in Figure 4, multi-parameter sensor 2 is arranged in cavity volume inside, multi-parameter sensor 2 is connected with cable connector 3 by wire, cable connector 3 is electrically connected with external signal receiving system, multi-parameter sensor 2 can simultaneously gaging pressure, resistivity and temperature, cable connector 3 is resistant to elevated temperatures ceramic post sintering pin header.
As shown in Figure 1 and Figure 2, described dividing plate 7 comprises mutual vertically disposed diaphragm 7 and midfeather 7, base plate is provided with the uniform midfeather 7 of the uniform diaphragm in multiple interval 7 and multiple interval, the cavity that diaphragm 7, midfeather 7 and base plate are formed is cubic type, and access aperture 6 is positioned on the base plate of cavity.
As shown in Figure 5, described dividing plate 7 is connected with base plate by bolt or welding, and the side plate of casing 4, base plate and cover plate 5 attachment can weld also can be fixed by bolt, and excellent sealing;
Described simulated experiment pit shaft 1, can be made up of steel pipe, can analogue perforation completion, sieve tube completion, also can be combined by steel pipe and other materials and make, simulation open hole well etc.The screwed hole of steel end and casing 4 side plate is connected.As shown in Figure 1, be Simulated Water horizontal well, the terminal part that described simulated experiment pit shaft 1 is positioned at cavity volume inside is arranged horizontally, and the tube wall of terminal part is furnished with multiple through hole.As shown in Figure 5, be dummy level Multilateral Wells, it is also provided with branched pipe 9 on horizontal well terminal part, and branched pipe 9 is also arranged horizontally, and the tube wall of branched pipe 9 is also furnished with multiple through hole.As shown in Figure 6, be Simulated Water horizontal well waterflooding extraction, the sidewall that the difference of itself and Simulated Water horizontal well is casing 4 be provided with simulation oil well pit shaft 10 that a terminal part is arranged horizontally and the simulation water injection well pit shaft 11 that two terminal parts are arranged horizontally.As shown in Figure 7, for the exploitation of Simulated Water horizontal well steam flood oil, the sidewall that the difference of itself and Simulated Water horizontal well is casing 4 is provided with simulation oil well pit shaft 10 that a terminal part is arranged horizontally and the simulation steamed well pit shaft 12 that two terminal parts are arranged horizontally.As shown in Figure 8, for simulation straight well waterflooding extraction, the terminal part that described simulated experiment pit shaft 1 is positioned at cavity volume inside is for vertically arranging, it be the simulation oil well pit shaft 10 vertically arranged and four terminal parts is the simulation water injection well pit shaft 11 vertically arranged that simulated experiment pit shaft 1 comprises a terminal part.As shown in Figure 9, for the exploitation of simulation straight well steam flooding, the terminal part that described simulated experiment pit shaft 1 is positioned at cavity volume inside is for vertically arranging, it be the simulation oil well pit shaft 10 vertically arranged and four terminal parts is the simulation steamed well pit shaft 12 vertically arranged that simulated experiment pit shaft 1 comprises a terminal part
The surrounding of described casing 4 outside is also provided with heater, and described heater is hot water pipeline or heating wire, carries out temperature control to whole casing 4.
Be provided with pressure source extension tube attached 13 in described access aperture 6, pressure source extension tube attached 13 is three-port structure, and one end of pressure source extension tube attached 13 is threaded with access port, and the other two ends of pressure source extension tube attached 13 are all connected with a ball valve 14.
Also flow measurement tool for small section is provided with in described simulated experiment pit shaft 1, as Figure 10, shown in Figure 11, described flow measurement tool for small section comprises central tube 15, shunt head 16 and outer endless tube 17, the end of central tube 15 is provided with circular baffle plate 18, shunt head 16 is cylinder cast, shunt head 16 is set in outside the central tube 15 at baffle plate 18 rear, the excircle of the end of outer endless tube 17 is provided with annular retaining ring 19, outer endless tube 17 is set in outside the central tube 15 at shunt head 16 rear, shunt head 16 is provided with circular fin A20 near one end of baffle plate 18, shunt head 16 is provided with circular fin B21 near one end of back-up ring 19, sealing ring A22 is provided with between circular fin A20 and baffle plate 18, sealing ring B23 is provided with between circular fin B21 and back-up ring 19, the position that baffle plate 18 is corresponding with the end face of shunt head 16 is circumferentially evenly equipped with axially extending bore A24, shunt head 16 is circumferentially evenly equipped with axially extending bore B25, back-up ring 19 is circumferentially evenly equipped with axially extending bore C26, the middle part of shunt head 16 is distributary division, distributary division is circumferentially evenly equipped with radial direction through hole A27, radial direction through hole A27 is not communicated with mutually with axially extending bore B25, and distributary division is provided with vertically many row's radial direction through hole A27, central tube 15 corresponding with distributary division position on be circumferentially evenly equipped with radial direction through hole B28, and central tube 15 corresponding with distributary division position on be also provided with many row's radial direction through hole B28 vertically, the left side of distributary division, sealing ring C29 is provided with between shunt head 16 and central tube 15, the right side of distributary division, sealing ring D30 is provided with between shunt head 16 and central tube 15, sealing ring E31 is provided with between outer endless tube 17 and central tube 15.
Described baffle plate 18, shunt head 16 and be matched in clearance between back-up ring 19 and simulation wellbore hole, namely the external diameter of baffle plate 18, shunt head 16 and back-up ring 19 is all slightly less than the internal diameter of simulation wellbore hole; Central tube 15 and the outer endless tube 17 of flow measurement tool for small section are all made up of high-intensity flexible pipe, have certain amount of deflection, can send into along simulated experiment pit shaft 1 well head.
In time needing the liquid outlet quantity of certain a bit of simulation well eye surveying simulated experiment pit shaft 1, only instrument need be placed on this fragment position, as shown in figure 12, then allow central tube 15 and outer endless tube 17 all move a section to the direction of shunt head 16 move, extruding center pipe 15 and shunt head 16 and the sealing ring A22 between outer endless tube 17 and shunt head 16 and sealing ring B23, as shown in figure 13, separate needing the segment of flow measurement, the fluid of tested segment flows into central tube 15 by the radial direction through hole A27 of shunt head 16 and the radial direction through hole B28 of central tube 15 successively and flows out, be positioned at the non-discharge site fluid of flow measurement tool for small section inner end then successively by axially extending bore A24, axially extending bore B25, axially extending bore C26 flows into annular space between outer endless tube 17 and simulated experiment pit shaft 1 also and flowed out by the annular space between outer endless tube 17 and simulated experiment pit shaft 1 after the non-discharge site fluid of flow measurement tool for small section outer end is converged, the liquid outlet quantity detecting tested segment can be realized by the flow in measuring center pipe 15, thus reach and segmentation can survey the object of segment well flow.
The experimental technique of a kind of Multifunctional oil reservoir analogue experiment installation described in employing, it comprises the following steps:
The cover plate 5 of S1, unlatching casing 4, carries out gluing and the process of capping sand by the inwall of casing 4 sidewall, simulated experiment pit shaft 1 outer wall, multi-parameter sensor 2 surface and conductive line surfaces; Object is in order to pressure after preventing casing 4 punching press is along sidewall, model well or wire direction mineralization pressure gradient, reduces the degree that sidewall, model well or wire produce non-homogeneity;
The on-the-spot cementing porous media artificial core of S2, layering back-up sand or layering;
S3, while the on-the-spot cementing porous media artificial core of layering back-up sand or layering, at the multi-parameter sensor 2 of point aspect by the preset pre-treatment of certain arrangement mode;
S4, while the on-the-spot cementing porous media artificial core of layering back-up sand or layering, arrange casing programme or the well pattern composition of the multiple completion mode of corresponding casing programme by pre-designed experimental subjects;
S5, cover testing fixture overall tightness after cover plate 5;
S6, relevant treatment is carried out in back-up sand or cementing porous media artificial core, described relevant treatment is saturated oils process or saturation water process;
S7, carry out the simulation of relevant oil reservoir according to different experimental programs, and utilize flow measurement tool for small section to extract certain section of fluid parameter in phase closing well.
When needs carry out overall temperature control time, by the heater of casing 4 surrounding, casing 4 to be heated, isothermal holding.
Claims (9)
1. a Multifunctional oil reservoir analogue experiment installation, it comprises cubic container, simulated experiment pit shaft (1), multi-parameter sensor (2) and cable connector (3), described cubic container comprises casing (4) and is arranged at the cover plate (5) at casing (4) top, casing is provided with cavity volume in (4), the base plate of casing (4) is evenly equipped with the access aperture (6) of multiple connection cavity volume and casing (4) space outerpace, the sidewall of casing (4) is provided with the connecting hole being communicated with cavity volume and casing (4) space outerpace, simulated experiment pit shaft (1) and cable connector (3) are all installed in different access aperture (6), it is characterized in that: the surrounding of each access aperture (6) is provided with around the access aperture dividing plate (7) of (6) weeks, dividing plate (7) is fixedly connected with base plate, dividing plate (7) and base plate form the cavity of upper shed, the sieve plate (8) be arranged in parallel with base plate is provided with in cavity, cavity is divided into upper and lower two parts by sieve plate (8), multi-parameter sensor (2) is arranged in cavity volume inside, multi-parameter sensor (2) is connected with cable connector (3) by wire, also flow measurement tool for small section is provided with in described simulated experiment pit shaft (1), described flow measurement tool for small section comprises central tube (15), shunt head (16) and outer endless tube (17), the end of central tube (15) is provided with circular baffle plate (18), shunt head (16) is cylinder cast, shunt head (16) is set in the central tube (15) at baffle plate (18) rear outward, the excircle of the end of outer endless tube (17) is provided with annular retaining ring (19), outer endless tube (17) is set in the central tube (15) at shunt head (16) rear outward, shunt head (16) is provided with circular fin A(20 near one end of baffle plate (18)), shunt head (16) is provided with circular fin B(21 near one end of back-up ring (19)), circular fin A(20) and baffle plate (18) between be provided with sealing ring A(22), circular fin B(21) and back-up ring (19) between be provided with sealing ring B(23), the position that baffle plate (18) is corresponding with the end face of shunt head (16) is circumferentially evenly equipped with axially extending bore A(24), (16) are circumferentially evenly equipped with axially extending bore B(25 to shunt head), (19) are circumferentially evenly equipped with axially extending bore C(26 to back-up ring), the middle part of shunt head (16) is distributary division, distributary division is circumferentially evenly equipped with radial direction through hole A(27), radial direction through hole A(27) with axially extending bore B(25) be not communicated with mutually, and distributary division is provided with vertically many row's radial direction through hole A(27), the position that central tube (15) is corresponding with distributary division is circumferentially evenly equipped with radial direction through hole B(28), and central tube (15) position corresponding with distributary division is also provided with vertically many row's radial direction through hole B(28), the left side of distributary division, sealing ring C(29 is provided with) between shunt head (16) and central tube (15), the right side of distributary division, sealing ring D(30 is provided with) between shunt head (16) and central tube (15), sealing ring E(31 is provided with) between outer endless tube (17) and central tube (15).
2. a kind of Multifunctional oil reservoir analogue experiment installation according to claim 1, it is characterized in that: described dividing plate (7) comprises mutual vertically disposed diaphragm (7) and midfeather (7), base plate is provided with the uniform diaphragm in multiple interval (7) and multiple interval uniform midfeather (7), the cavity that diaphragm (7), midfeather (7) and base plate are formed is cubic type, and access aperture (6) is positioned on the base plate of cavity.
3. a kind of Multifunctional oil reservoir analogue experiment installation according to claim 1, is characterized in that: the surrounding of described casing (4) outside is also provided with heater, and described heater is hot water pipeline or heating wire.
4. a kind of Multifunctional oil reservoir analogue experiment installation according to claim 1, it is characterized in that: in described access aperture (6), pressure source extension tube attached (13) is installed, pressure source extension tube attached (13) is three-port structure, one end of pressure source extension tube attached (13) is threaded with access port, and the other two ends of pressure source extension tube attached (13) are all connected with a ball valve (14).
5. a kind of Multifunctional oil reservoir analogue experiment installation according to claim 1, is characterized in that: the terminal part that described simulated experiment pit shaft (1) is positioned at cavity volume inside is arranged horizontally, and the tube wall of terminal part is furnished with multiple through hole.
6. a kind of Multifunctional oil reservoir analogue experiment installation according to claim 5, it is characterized in that: described terminal part is also provided with branched pipe (9), branched pipe (9) is also arranged horizontally, and the tube wall of branched pipe (9) is also furnished with multiple through hole.
7. a kind of Multifunctional oil reservoir analogue experiment installation according to claim 1, is characterized in that: described simulated experiment pit shaft (1) is positioned at the terminal part of cavity volume inside for vertically arranging.
8. adopt the experimental technique of a kind of Multifunctional oil reservoir analogue experiment installation as claimed in claim 1, it is characterized in that: it comprises the following steps:
The cover plate (5) of S1, unlatching casing (4), carries out gluing and the process of capping sand by the inwall of casing (4) sidewall, simulated experiment pit shaft (1) outer wall, multi-parameter sensor (2) surface and conductive line surfaces;
The on-the-spot cementing porous media artificial core of S2, layering back-up sand or layering;
S3, while the on-the-spot cementing porous media artificial core of layering back-up sand or layering, at the preset multi-parameter sensor (2) processed in step sl of point aspect;
S4, while the on-the-spot cementing porous media artificial core of layering back-up sand or layering, arrange casing programme or well pattern composition;
S5, cover cover plate (5) testing fixture overall tightness afterwards;
S6, relevant treatment is carried out in back-up sand or cementing porous media artificial core, described relevant treatment is saturated oils process or saturation water process;
S7, carry out the simulation of oil reservoir, and utilize flow measurement tool for small section to extract certain section of fluid parameter in well.
9. the experimental technique of a kind of Multifunctional oil reservoir analogue experiment installation according to claim 8, is characterized in that: when needs carry out overall temperature control time, was heated, isothermal holding by the heater of casing (4) surrounding to casing (4).
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| CN106285593A (en) * | 2015-06-26 | 2017-01-04 | 中国石油化工股份有限公司 | Horizontal well steam drives physical model and experimental technique |
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| CN111006933B (en) * | 2019-12-02 | 2020-10-23 | 中国石油大学(北京) | Method and device for determining the quantity of oil extracted by an extraction experiment |
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| CN113653476A (en) * | 2021-07-20 | 2021-11-16 | 中国地质大学（武汉） | Two-dimensional visual oil displacement experimental device and experimental method in oil and gas exploitation process |
| CN116838335A (en) * | 2023-07-10 | 2023-10-03 | 中国石油大学(北京) | Multiphase seepage three-dimensional visual simulation device and method for well with complex structure |
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