CN203288149U - Permeability oil reservoir multilayer commingling physical simulation system - Google Patents
Permeability oil reservoir multilayer commingling physical simulation system Download PDFInfo
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- CN203288149U CN203288149U CN2013201848875U CN201320184887U CN203288149U CN 203288149 U CN203288149 U CN 203288149U CN 2013201848875 U CN2013201848875 U CN 2013201848875U CN 201320184887 U CN201320184887 U CN 201320184887U CN 203288149 U CN203288149 U CN 203288149U
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Abstract
The utility model discloses a permeability oil reservoir multilayer commingling physical simulation system. The physical simulation system comprises an injection device, a plurality of planar models and a measuring device, wherein the injection device is connected with each planar model; and each planar model is connected with the measuring device. The injection device injects displacement fluid into the plurality of planar models. The plurality of planar models, which are formed by encapsulating natural low-permeability sandstone plates with different permeability, are used for simulating different small layers of multilayer oil reservoirs. The front face of each planar model is provided with pressure measurement points for measuring pressure fields of pressure measurement points of each planar model, and the back face of each planar model is provided with electrode measurement points for measuring flow fields and saturability fields of each planar model. The measuring device collects the pressure fields, the flow fields and the saturability fields of each planar model.
Description
Technical field
The utility model is that concrete is a kind of infiltration oil reservoir commingling production physical simulation system about the experiment of petroleum industry geologic development plane simulation.
Background technology
At present, mainly adopt one dimension rock core and flat plate model for the experimental study that the Oil Field Development and Production is carried out indoor physical simulation.For low-permeability oil deposit, one of them notable feature is exactly that nonuniformity is strong, and the different parts reservoir properties differs greatly, and the control action of fluid flow is different.Due to the existence of nonuniformity, oil reservoir with multiple series of strata interlayer development degree differs greatly, serious interlayer interference, each layer waterflooding effect differ greatly.Close to annotate and close while adopting in order to study this class oil reservoir multilayer, each layer waterflooding effect difference, fluid flow characteristics and the regularity of distribution, prior art is tested the displacements in parallel of several one dimension rock cores by experimental system in parallel, has obtained some useful conclusions.Due to the complicacy of percolation in low permeability oil reservoir rule, the little core non linear fluid flow through porous medium of traditional one dimension experimental study can not reflect the non linear fluid flow through porous medium rule of fluid on two-dimensional directional fully.Prior art is also made the dull and stereotyped physical model of hyposmosis and carries out Seepage Experiment by adopting hyposmosis natural sandstone flat board to appear, and has obtained some useful conclusions., due to the laboratory condition restriction, there is no at present the scholar and adopt flat plate model to carry out experimental study to oil reservoir with multiple series of strata interlayer development degree, interlayer interference, each layer waterflooding effect.
The utility model content
The technical matters that the utility model solves has overcome the shortcoming of prior art, and a kind of infiltration oil reservoir commingling production physical simulation system is provided.
Infiltration oil reservoir commingling production physical simulation system of the present utility model, comprising: injection device, a plurality of areal models and measurement mechanism; Described injection device is connected with each described areal model, and each described areal model is connected with described measurement mechanism, and wherein, described injection device is injected into the displacement fluid in described a plurality of areal model; Described a plurality of areal model, formed by the dull and stereotyped encapsulation of the saturating sandstone of the Natural Low-permeable of different permeabilities, is used for the different substratums of simulation stratified reservoir; Wherein, pressure measurement point is arranged in front at each described areal model, the pressure field that is used for the pressure measurement point of each described areal model of measurement, and at the back side of each described areal model, arrange the electrode measurement point, be used for measuring flow field and the saturation field of each described areal model; Described measurement mechanism gathers described pressure field, flow field and the saturation field of each described areal model.
Further, described injection device comprises a nitrogen cylinder, intermediate receptacle and voltage stabilizing instrument; Wherein, described nitrogen cylinder, be connected in described voltage stabilizing instrument, for described intermediate receptacle provides source of the gas; Described voltage stabilizing instrument, be connected in described intermediate receptacle, is used for controlling described source of the gas, and guaranteeing provides the supply pressure of continous-stable to described intermediate receptacle; Described intermediate receptacle, be connected in each described areal model, produces the displacement fluid according to described source of the gas, and described displacement fluid is injected each described areal model.
Further, described injection device comprises a high precision displacement pump, is connected in each described areal model, for generation of the displacement fluid, injects each described areal model.
Further, be provided with electrode wires in each described areal model, by conducting resinl and described areal model, undertaken cementing; In the described pressure measurement point of the positive layout of each described areal model, the back side is carried out integral cast with epoxy resin to model after arranging described electrode measurement point.
Further, described measurement mechanism comprises: multi-channel data acquisition device, resistivity measuring instrument, pressure logging, computing machine; Wherein, described multi-channel data acquisition device, connect each described areal model, is used for gathering the resistivity between each the described electrode measurement point on described areal model, is sent to described resistivity measuring instrument; Described resistivity measuring instrument, connect described multi-channel data acquisition device, is used for measuring the numerical value of described resistivity, and generates flow field and the described saturation field of described areal model, sends to described computer recording; Described pressure logging, connect each described areal model, gathers the pressure field of measuring each described pressure measurement point on described areal model, and described pressure field is sent to described computer recording.Described computing machine is connected in described resistivity measuring instrument and described pressure logging, records and shows described flow field, saturation field and pressure field.
Further, described system also comprises providing device, and described providing device connects each described areal model, comprises micro-flowmeter and electronic balance; Wherein, described micro-flowmeter connects each described areal model and described electronic balance, for the speed of the produced fluid of measuring described areal model; Described electronic balance is connected in described micro-flowmeter, for the output of the produced fluid of measuring described areal model.
The utility model is compared in prior art for flat plate model in the blank aspect research commingling production experimental technique, propose a kind of infiltration oil reservoir commingling production physical simulation system, can automatically record pressure field and the flow field of each layering when commingling production is tested.When the exploitation of simulation stratified reservoir, can understand respectively every one deck pressure variation and flow field change on stream is to understand the oil reservoir development rule, estimates the basis of existing development effectiveness and next step plan for adjustment of formulation.At present existing experimental technique is gaging pressure field and flow field simultaneously, thereby perfect not to the analysis of experimental result; When having realized the pressure field of stratified reservoir performance history physical simulation experiment and flow field, measures the utility model.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present utility model, forms the application's a part, does not form restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the structural representation of the infiltration oil reservoir commingling production physical simulation system of the utility model embodiment.
Fig. 2 is the structural representation of the injection device of the utility model embodiment.
Fig. 3 is the structural representation of the measurement mechanism of the utility model embodiment.
Fig. 4 is the electrode measurement point numbering schematic diagram of the areal model of the utility model embodiment.
Fig. 5 is the circuit diagram of the multi-channel data acquisition device of the utility model embodiment.
Fig. 6 is the structural representation of the infiltration oil reservoir commingling production physical simulation system of another embodiment of the utility model.
Fig. 7 is the flow chart of steps of the infiltration oil reservoir commingling production physical simulation system method of the utility model embodiment.
Embodiment
, for making the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with accompanying drawing, the utility model embodiment is described in further details.At this, the utility model be used for is explained in illustrative examples of the present utility model and explanation thereof, but not as to restriction of the present utility model.
Figure 1 shows that the structural representation of the infiltration oil reservoir commingling production physical simulation system of the utility model embodiment.As shown in Figure 1, described system comprises (hereinafter to be referred as system): injection device, a plurality of areal models and measurement mechanism; Wherein,
Injection device 11, be used for the displacement fluid is injected into a plurality of areal models 12;
A plurality of areal models 12, adopt different physical dimensions and well pattern type, and the dull and stereotyped encapsulation of the saturating sandstone of the Natural Low-permeable of different permeabilities forms, and is used for each plane of simulation stratified reservoir;
Wherein, pressure measurement point is arranged in front at each areal model 12, be used for measuring the pressure field of each areal model 12, arranged the electrode measurement point at the back side of each areal model 12, be used for measuring flow field change situation and the saturation field situation of change of each areal model 12;
In the present embodiment, the making of areal model is according to concrete experiment, by the different substratums in stratified reservoir, adopts respectively the dull and stereotyped encapsulation of the saturating sandstone of Natural Low-permeable of different permeabilities to form, and physical dimension and well pattern type can be determined according to the needs of concrete experiment.In positive injection-production well and the pressure measurement point of arranging of areal model 12, but experimental needs slot has been simulated the producing well waterfrac treatment, arranged potential electrode at areal model 12 back sides, be used for measuring saturation field situation of change in single-phase experiment flow field change situation and two-phase experiment according to resistivity method.Electrode wires is undertaken cementing by conducting resinl and areal model 12., through pressure-measuring-point and the postpone of resistance measuring point cloth, with epoxy resin, areal model 12 is carried out integral cast.After sealing is fixed, areal model 12 is vacuumized; In vacuum on areal model 12 the Bonding pressure table, guarantee that vacuum fully carries out.It is tentatively saturated that the application external atmosphere pressure is carried out local water, injects local water with the displacement pump in areal model 12 finally, built the pressure 24 hours, then with the static placement of areal model 12 48 hours, so that areal model 12 saturated local water sufficiently uniformly.
Figure 2 shows that the structural representation of the injection device of the utility model embodiment.As shown in Figure 2, injection device 11 comprises: nitrogen cylinder 111, voltage stabilizing instrument 112 and intermediate receptacle 113; Wherein,
In another embodiment, injection device 11 also can be realized by high precision displacement pump the injection of displacement fluid.
Fig. 3 is the structural representation of the measurement mechanism of the utility model embodiment.As shown in Figure 3, measurement mechanism 13 comprises: multi-channel data acquisition device 131, resistivity measuring instrument 132, pressure logging 133 and computing machine 134; Wherein,
Multi-channel data acquisition device 131, connect respectively each areal model 12, for the resistivity between each electrode measurement point of acquisition plane model 12 back sides settings;
In the present embodiment, the resistivity measuring instrument principle of work is as follows:
Rock core resistivity and local water ion concentration value are functional relation and are:
R=f(a)f(b)
In formula, R is resistivity, the function that f (a) expression is relevant with lithology, f (b) expression and concentration dependent function.F (a) functional relation is difficult to set up., in order to address this problem, adopt the small sample of the model of appearing to demarcate.Method is as follows: at first record the rock core resistivity data under a series of different ions concentration in large-sized model in experiment, the resistivity under it and same fixed concentration is carried out ratio., for same position, can obtain following formula:
In formula, I is resistivity ratio, R
0For the resistivity under same fixed concentration.
Carry out calibration experiment with the parallel rock sample of model of appearing again, obtain the relation of mineralized water ion concentration and resistivity ratio, measure so in large-sized model certain any resistivity and just can obtain the mineralized water ion concentration in certain any that moment.
The pressure logging is a kind of industrial measurement and control instrument, and it can be used in conjunction with pressure transducer, can carry out touring detection, controlling alarm, change to multichannel pressure experiment procedure parameter and send output, data acquisition and communication.The pressure logging is a kind of comparatively ripe industrial measurement and control instrument, therefore its principle of work is not repeated herein.
In a specific embodiment of the present utility model, the distribution of the electrode measurement point that areal model 12 back sides arrange is as shown in Figure 4: be provided with 9 electrode measurement points according to sphere of movements for the elephants on areal model 12, be numbered respectively: 1,2,3,4,5,6,7,8,9; Experiment need to be tested adjacent 2, namely (1,2), (Isosorbide-5-Nitrae), (1,5), (2,3), (2,4), (2,5), (2,6), (3,5), (3,6), (4,5), (4,7), (4,8), (5,6), (5,7), (5,8), (5,9), (6,8), (6,9), the resistivity between (7,8), (8,9) is tested.
According to old measuring method, must connect above 20 pairs of electrode wires, and must the position of electrode wires is corresponding with channel number.
In the present embodiment, be provided with a control chip (single-chip microcomputer) in the multi-channel data acquisition device, form the circuit diagram as Fig. 5.Wherein, first with the 1-9 electrode measurement point on areal model 12 according to an end that is sequentially connected to electrode contact in circuit, then with the other end of 1-9 electrode measurement point street electrode contact; Write data file on computing machine 134, form is txt file, and particular content is:
Begin：1：(1，2)；2：(1，4)；3：(1，5)；4：(2，3)；5：(2，4)；6：(2，5)；7：(2，6)；8：(3，5)；9：(3，6)；10：(4，5)；11：(4，7)；12：(4，8)；13：(5，6)；14：(5，7)；15：(5，8)；16：(5，9)；17：(6，8)；18：(6，?9)；19：(7，8)；20：(8，9)；end
Above data file is transferred to control chip by computing machine 14, the different electronic switch of sequential control that the control chip control circuit is set according to data file, resistivity between the Different electrodes measurement point is gathered, then measure by the resistivity of 132 pairs of collections of resistance measuring instrument, obtain the numerical value of resistivity, and generate flow field and the saturation field of areal model 12 according to the numerical evaluation of resistivity, and be transferred to computing machine 134 and carry out record.
In conjunction with Fig. 1 to Fig. 3, Fig. 6 is the system architecture schematic diagram of another embodiment of the utility model.As shown in Figure 6, described system also comprises a providing device 14, and providing device 14 comprises: micro-flowmeter 141 and electronic balance 142; Wherein,
In actual experiment, after the pressure stability of flat plate model 12, can measure and reach fluid velocity and the fluid-withdrawal rate of stablizing rear plate model 12 by micro-flowmeter 141 and electronic balance 142.
The utility model is compared in prior art for flat plate model in the blank aspect research commingling production experimental technique, utility model a kind of infiltration oil reservoir commingling production physical simulation system, can automatically record pressure field and the flow field of each layering when commingling production is tested.
In conjunction with Fig. 1 to Fig. 6, Fig. 7 is the flow chart of steps of the infiltration oil reservoir commingling production physical simulating method of the utility model embodiment.As shown in Figure 7, described method comprises:
Step S701, select a plurality of areal models 12 as required.
In the present embodiment, the making of areal model 12 is according to concrete experiment, by the different substratums in stratified reservoir, adopts respectively the dull and stereotyped encapsulation of the saturating sandstone of Natural Low-permeable of different permeabilities to form, and physical dimension and well pattern type can be determined according to the needs of concrete experiment.In positive injection-production well and the pressure measurement point of arranging of areal model 12, but experimental needs slot has been simulated the producing well waterfrac treatment, arranged potential electrode at areal model 12 back sides, be used for measuring saturation field situation of change in single-phase experiment flow field change situation and two-phase experiment according to resistivity method.Electrode wires is undertaken cementing by conducting resinl and areal model 12., through pressure-measuring-point and the postpone of resistance measuring point cloth, with epoxy resin, areal model 12 is carried out integral cast.After sealing is fixed, areal model 12 is vacuumized; In vacuum on areal model 12 the Bonding pressure table, guarantee that vacuum fully carries out.It is tentatively saturated that the application external atmosphere pressure is carried out local water, injects local water with the displacement pump in areal model 12 finally, built the pressure 24 hours, then with the static placement of areal model 12 48 hours, so that areal model 12 saturated local water sufficiently uniformly.
Step S702, be injected into described a plurality of areal model 12 with the displacement fluid.
In the present embodiment, the displacement fluid can pass through in nitrogen cylinder 111, voltage stabilizing instrument 112 and intermediate receptacle 113 injection plane models 12.In another embodiment, the displacement fluid can be realized in injection plane model 12 by high precision displacement pump.
Step S703, gather pressure field, flow field and the saturation field of measuring described a plurality of areal models 12.
In the present embodiment, can, by input one control program, measure flow field and the saturation field of a plurality of areal models 12 according to described control program collection.Concretely, first the point of the electrode measurement on areal model 12 is numbered, writes data file (form is txt file) on computing machine 134, particular content is as follows:
Begin：1：(1，2)；2：(1，4)；3：(1，5)；4：(2，3)；5：(2，4)；6：(2，5)；7：(2，6)；8：(3，5)；9：(3，6)；10：(4，5)；11：(4，7)；12：(4，8)；13：(5，6)；14：(5，7)；15：(5，8)；16：(5，9)；17：(6，8)；18：(6，9)；19：(7，8)；20：(8，9)；end
The acquisition order of setting by data file is measured the numerical value of the resistivity between the Different electrodes measurement point, by flow field and the saturation field that calculates areal model 12.
The utility model is compared in prior art for flat plate model in the blank aspect research commingling production experimental technique, propose a kind of infiltration oil reservoir commingling production physical simulation system, can automatically record pressure field and the flow field of each layering when commingling production is tested.When the exploitation of simulation stratified reservoir, can understand respectively every one deck pressure variation and flow field change on stream is to understand the oil reservoir development rule, estimates the basis of existing development effectiveness and next step plan for adjustment of formulation.At present existing experimental technique is gaging pressure field and flow field simultaneously, thereby perfect not to the analysis of experimental result; When having realized the pressure field of stratified reservoir performance history physical simulation experiment and flow field, measures the utility model.
Above-described specific embodiment; the purpose of this utility model, technical scheme and beneficial effect are further described; institute is understood that; the foregoing is only specific embodiment of the utility model; and be not used in and limit protection domain of the present utility model; all within spirit of the present utility model and principle, any modification of making, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (6)
1. an infiltration oil reservoir commingling production physical simulation system, is characterized in that, comprising: injection device, a plurality of areal models and measurement mechanism; Described injection device is connected with each described areal model, and each described areal model is connected with described measurement mechanism, wherein,
Described injection device is injected into the displacement fluid in described a plurality of areal model;
Described a plurality of areal model, formed by the dull and stereotyped encapsulation of the saturating sandstone of the Natural Low-permeable of different permeabilities, is used for the different substratums of simulation stratified reservoir;
Wherein, pressure measurement point is arranged in front at each described areal model, the pressure field that is used for the pressure measurement point of each described areal model of measurement, and at the back side of each described areal model, arrange the electrode measurement point, be used for measuring flow field and the saturation field of each described areal model;
Described measurement mechanism gathers described pressure field, flow field and the saturation field of each described areal model.
2. system according to claim 1, is characterized in that, described injection device comprises a nitrogen cylinder, intermediate receptacle and voltage stabilizing instrument; Wherein,
Described nitrogen cylinder, be connected in described voltage stabilizing instrument, for described intermediate receptacle provides source of the gas;
Described voltage stabilizing instrument, be connected in described intermediate receptacle, is used for controlling described source of the gas, and guaranteeing provides the supply pressure of continous-stable to described intermediate receptacle;
Described intermediate receptacle, be connected in each described areal model, produces the displacement fluid according to described source of the gas, and described displacement fluid is injected each described areal model.
3. system according to claim 1, is characterized in that, described injection device comprises a high precision displacement pump, is connected in each described areal model, for generation of the displacement fluid, injects each described areal model.
4. system according to claim 1, is characterized in that, is provided with electrode wires in each described areal model, by conducting resinl and described areal model, undertaken cementing; In the described pressure measurement point of the positive layout of each described areal model, the back side is carried out integral cast with epoxy resin to model after arranging described electrode measurement point.
5. system according to claim 1, is characterized in that, described measurement mechanism comprises: multi-channel data acquisition device, resistivity measuring instrument, pressure logging, computing machine; Wherein,
Described multi-channel data acquisition device, connect each described areal model, is used for gathering the resistivity between each the described electrode measurement point on described areal model, is sent to described resistivity measuring instrument;
Described resistivity measuring instrument, connect described multi-channel data acquisition device, is used for measuring the numerical value of described resistivity, and generates flow field and the described saturation field of described areal model, sends to described computer recording;
Described pressure logging, connect each described areal model, gathers the pressure field of measuring each described pressure measurement point on described areal model, and described pressure field is sent to described computer recording;
Described computing machine is connected in described resistivity measuring instrument and described pressure logging, records and shows described flow field, saturation field and pressure field.
6. system according to claim 1, is characterized in that, described system also comprises providing device, and described providing device connects each described areal model, comprises micro-flowmeter and electronic balance; Wherein,
Described micro-flowmeter connects each described areal model and described electronic balance, for the speed of the produced fluid of measuring described areal model;
Described electronic balance is connected in described micro-flowmeter, for the output of the produced fluid of measuring described areal model.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103247215A (en) * | 2013-04-12 | 2013-08-14 | 中国石油天然气股份有限公司 | Commingling production physical simulation system and method of permeability oil reservoir |
| CN104156617A (en) * | 2014-08-24 | 2014-11-19 | 西南石油大学 | Six-stage modeling method for quality classification representation of multiple sandstone gas reservoir gas layers |
| CN108361007A (en) * | 2018-01-18 | 2018-08-03 | 中国石油天然气股份有限公司 | LOW PERMEABILITY RESERVOIR multilayer note adopts physical simulating device and method |
| CN109187923A (en) * | 2018-09-12 | 2019-01-11 | 中国石油天然气股份有限公司 | A kind of seam net Fractured Reservoir imbibition oil recovery effect experiment evaluation method |
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2013
- 2013-04-12 CN CN2013201848875U patent/CN203288149U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103247215A (en) * | 2013-04-12 | 2013-08-14 | 中国石油天然气股份有限公司 | Commingling production physical simulation system and method of permeability oil reservoir |
| CN104156617A (en) * | 2014-08-24 | 2014-11-19 | 西南石油大学 | Six-stage modeling method for quality classification representation of multiple sandstone gas reservoir gas layers |
| CN104156617B (en) * | 2014-08-24 | 2017-06-23 | 西南石油大学 | For the six stage modeling methods that multilayer sandstone reservoirs gas-bearing formation attribute classification is characterized |
| CN108361007A (en) * | 2018-01-18 | 2018-08-03 | 中国石油天然气股份有限公司 | LOW PERMEABILITY RESERVOIR multilayer note adopts physical simulating device and method |
| CN109187923A (en) * | 2018-09-12 | 2019-01-11 | 中国石油天然气股份有限公司 | A kind of seam net Fractured Reservoir imbibition oil recovery effect experiment evaluation method |
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