CN105092404A - Self-priming experimental instrument and experiment detection method - Google Patents
Self-priming experimental instrument and experiment detection method Download PDFInfo
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- CN105092404A CN105092404A CN201510222429.XA CN201510222429A CN105092404A CN 105092404 A CN105092404 A CN 105092404A CN 201510222429 A CN201510222429 A CN 201510222429A CN 105092404 A CN105092404 A CN 105092404A
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Abstract
The present invention provides a self-priming experimental instrument and a detection method, and belongs to the technical field of experiments. An inner chamber base plate of a box body is connected to movable adjusting lever; the movable adjusting lever is connected to a slider; the slider is connected to a fixed platform; the fixed platform is connected to an object weighing basket; a rotary knob is connected to the slider and movable adjusting lever; the slider moves or is fixed to the adjusting lever through the rotary knob; the front of the box body is connected to a left glass sash window and a right glass sash window; a balance is placed on the box top; the balance is connected to the basket; and the balance is connected to the computer by a cable. The method has the advantages of easy operation in the experimental research, reduction of the error caused by personnel, machinery intervention and improvement of work efficiency, simple operation, less manual intervention, capability of unattended continuous automatic test, visual interface, visual acquisition of data and simple data processing.
Description
Technical field
Involved in the present invention is a kind of self-priming experiment instrument for imbibition experiment, and experiment detection method, truely test technical field.
Background technology
Existing situation explanation.In oil-gas field development experiment, current imbibition experiment has mainly come with weighting manner.The original automatic imbibition experimental provision in laboratory is reconstructed by automatic particle size analyzer to form.According to Stokes' law, to grain size segregation be there is during sedimentation in the particle of various grade in liquid medium, with the carrying out of sedimentation, weight also will constantly increase, and when being increased to constant weight, balance produces, photoelectric commutator accepts light signal and orders about circuit working, recording pointer marks little lattice to the right on recording chart, and load maintainer is just automatically raised the price and balance is restored balance, blocking light path shutdown signal.So carry out until stop, just can obtain the stepped appearance raw readings curve of a weight time to time change.
Shortcoming:
(1) need to change chain according to the volume of voids of rock core and determine chart drive speed;
(2) scale division value that chain is maximum is 20, and volume of voids >2.2cm3 just can not use;
(3) use adds counterweight before starting, and adds personal error.
Summary of the invention
In order to overcome the deficiencies in the prior art, invention a kind of self-priming experiment instrument and experiment detection method.Achieve Automatic Control and the collection of experimentation, reduce manual intervention, easy to operate, data processing is simple, and experimental precision is high.
(1) a kind of self-priming experiment instrument
The inner chamber base plate of casing connects activity adjustment bar, activity adjustment bar connection sliding block, slide block is connected and fixed platform, stationary platform connects and claims thing basket, on knob connection sliding block and activity adjustment bar, to be moved by slide block and fix by knob on activity adjustment bar, the front of casing connects left glass and draws window and right glass to draw window, the top of casing placed by balance, and balance is connected with title thing basket, and balance is connected by cable with computing machine.
(2) based on the rock core imbibition experiment detection method of apparatus of the present invention
First the rock core of the experiment parameter such as washing oil, oven dry, the complete factor of porosity of survey, dry weight is put in the thing basket hung under balance; Then the beaker filling wetting liquid is placed on sample weighting disk, and rotates knob lifting beaker gradually, sample is immersed in wetting liquid lentamente; And click START button, recorded the balance reading in corresponding moment by computer program, start experiment measuring; After having tested, close instrument power source; Last experimentally data calculate rock sample imbibition efficiency and imbibition termination time.
To achieve these goals, according to an aspect of the present invention, provide a kind of self-priming experiment instrument, comprising: casing, casing has container cavity; Supporting construction, supporting construction is arranged in container cavity, and supporting construction is provided with and claims thing basket; Balance, balance is electrically connected with title thing basket; Computing machine, computing machine is electrically connected with balance.
Further, at least one sidewall of casing is transparent windows.
Further, transparent windows draws window and right glass to draw window to form by the left glass cooperatively interacted.
Further, supporting construction comprises activity adjustment bar, slide block and stationary platform, and activity adjustment bar is fixed on the base plate of casing, and slide block is arranged on activity adjustment bar movably, and slide block is fixedly connected with stationary platform.
Further, supporting construction also comprises knob, and knob is connected on slide block, and slide block can be fixed on activity adjustment bar by knob.
According to a further aspect in the invention, provide a kind of self-priming experiment detection method, adopt aforesaid self-priming experiment instrument to carry out experiment and detect, self-priming experiment detection method comprises the following steps:
Step S1: open computing machine, and conducting balance, make the self-priming experiment instrument preheating schedule time;
Step S2: experimental water is placed in the container cavity of casing;
Step S3: the related experiment parameter of input rock core rock sample, and rock core rock sample is put into claim thing basket to test.
Further, relevant examination experiment parameter comprises the density of experimental temperature, factor of porosity, volume of voids and experimental water.
Further, in the process of step S3, by adjusting knob, slide block is moved, be immersed in completely in experimental water to make rock core rock sample.
Accompanying drawing explanation
When considered in conjunction with the accompanying drawings, by referring to detailed description below, more completely can understand the present invention, and many advantages wherein, but accompanying drawing described herein is used to provide a further understanding of the present invention, form a part of the present invention, schematic description and description of the present invention is for explaining the present invention, do not form inappropriate limitation of the present invention, wherein:
Fig. 1 is structural representation of the present invention;
Fig. 2 is rock sample imbibition saturation degree and time chart;
Fig. 3 is rock sample matching imbibition saturation degree and time chart.
Below in conjunction with drawings and Examples, the present invention is further described.
Embodiment
Obviously, the many modifications and variations that those skilled in the art do based on aim of the present invention belong to protection scope of the present invention.
Embodiment 1: instrument is set up and connected
As shown in Figure 1, a kind of self-priming experiment instrument, the inner chamber base plate of casing 1 connects activity adjustment bar 4, activity adjustment bar 4 connection sliding block 5, slide block 5 is connected and fixed platform 7, stationary platform 7 connects and claims thing basket 8, on knob 6 connection sliding block 5 and activity adjustment bar 4, to be moved by slide block 5 and fix by knob 6 on activity adjustment bar 4, the front of casing 1 connects left glass and draws window 2 and right glass to draw window 3, the top of casing 1 placed by balance 9, and balance 9 is connected with title thing basket 8, and balance 9 is connected by cable with computing machine 10.
Embodiment 2: experimental implementation flow process
(1) computing machine 10, balance 9 power supply is connected, complete machine preheating 30 minutes;
(2) experimental water is contained reach 2/3rds scale places into beaker, and be placed in stationary platform 7;
(3) start test procedure, open " imbibition evaluation software ";
(4) input experimental temperature, factor of porosity, volume of voids, put into sample test;
(5) at " collection period setting " interface setting data collection period, the rock sample of current test is selected to number, the liquid-tight degree of input test;
(6) rock sample is put on thing basket 8, click START button at " data acquisition " interface, be then elevated knob 6, rock core is all immersed in rapidly in wetting liquid, analyze and start, as shown in Figure 1;
(7) along with the increase of soakage, data collection cycle is increased gradually;
(8) treat that balance reading is stablized, when wetting phase saturation degree no longer increases, imbibition has been tested;
(9) computer-automatic collection stores data, obtains imbibition time and imbibition water saturation data;
(10), after testing, balance 9 and computing machine 10 power supply is closed in order.
Embodiment 3: flow chart of data processing
(1) calculating of imbibition initial saturation
1. will test the reading deduction balance blank value obtained, calculate not imbibition saturation degree Sst (as shown in table 2) in the same time by following formula (1);
Imbibition saturation computation formula is
In formula, Sst---t rock sample imbibition saturation degree, %;
Vst---t rock sample imbibition amount, ml;
Vp---rock sample volume of voids, ml;
Mt---t moment balance reading, g;
M1---initial time balance reading, g;
ρ 2---fluid density, g/cm3;
ρ 1---gas density, g/cm3;
Table 1 rock sample imbibition saturation data table
2. dynamic according to the imbibition of matrix sillar, oil-gas field development exhaustion rule should be met.According to Aronofsky model (with following formula 2), matching (as table 1 imbibition saturation degree Sstf) is carried out to experimental result, and the Sstf drawn with regard to Sst and matching respectively and time t does X plot (as shown in Figure 2);
S
stf＝S
∞(1-e
-λt)(2)
In formula, S ∞---as t ∞, limit imbibition saturation degree, %;
Sstf---be t matching imbibition saturation degree, %;
λ---be imbibition constant, dimensionless.
3. according to the relation (as shown in Figure 3) of matching imbibition saturation degree Sstf and time t, show as two straight-line segments under log-log coordinate, last straight-line segment slope is comparatively large, is called imbibition section (dashed rectangle region); A rear straight-line segment is rather mild, is called diffuser.Diffusion phase rock sample wetting phase saturation degree can not increase, and therefore the intersection point of two straight-line segments is the terminating point of imbibition process.Wetting phase saturation degree corresponding to this intersection point is called imbibition efficiency D, and the time corresponding to intersection point is called imbibition termination time T, as shown in Figures 2 and 3.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a self-priming experiment detection method, is characterized in that, containing following steps:
Totally claim dry weight by rock sample extracting, measure volume of voids and factor of porosity; Sample is placed in metal frame, hangs on balance hook;
The beaker filling wetting liquid is maked somebody a mere figurehead on balance sample weighting disk, and promotes beaker gradually, make to hang over the sample of dying young on plain hook and gently and be promptly immersed in wetting liquid;
Now record static pressure gravimetric value and the time value of corresponding time;
When weight change is very fast, the time interval should get longer, and when weight change is very slow, the time interval is then desirable shorter;
It is imbibition efficiency and imbibition termination time from the main data acquired by absorbing method;
At the end of imbibition definitions of efficiency is porous medium imbibition, wetting phase saturation degree no longer increases, and sucks the percentage that wetting phase volume accounts for rock sample total pore size volume, is imbibition end time rock sample wetting phase saturation degree.
Imbibition saturation computation formula is:
In formula, Sst---t rock sample imbibition saturation degree, %;
Vst---t rock sample imbibition amount, ml;
Vp---rock sample volume of voids, ml;
Mt---t moment balance reading, g;
M1---initial time balance reading, g;
ρ 2---fluid density, g/cm3;
ρ 1---gas density, g/cm3;
When self-priming stops, the corresponding time is the imbibition termination time.
2. a self-priming experiment instrument, it is characterized in that, the inner chamber base plate of casing connects activity adjustment bar, activity adjustment bar connection sliding block, slide block is connected and fixed platform, stationary platform connects and claims thing basket, on knob connection sliding block and activity adjustment bar, to be moved by slide block and fix by knob on activity adjustment bar, the front of casing connects left glass and draws window and right glass to draw window, the top of casing placed by balance, and balance is connected with title thing basket, and balance is connected by cable with computing machine.
3. a self-priming experiment instrument, is characterized in that, comprising:
Casing (1), described casing (1) has container cavity;
Supporting construction, described supporting construction is arranged in described container cavity, and described supporting construction is provided with and claims thing basket (8);
Balance (9), described balance (9) is connected with described title thing basket (8);
Computing machine (10), described computing machine (10) is electrically connected with described balance (9).
4. self-priming experiment instrument according to claim 3, is characterized in that, at least part of sidewall of described casing (1) is transparent windows.
5. self-priming experiment instrument according to claim 4, is characterized in that, described transparent windows draws window (2) and right glass to draw window (3) to form by the left glass cooperatively interacted.
6. self-priming experiment instrument according to claim 3, it is characterized in that, described supporting construction comprises activity adjustment bar (4), slide block (5) and stationary platform (7), described activity adjustment bar (4) is fixed on the base plate of described casing (1), described slide block (5) is arranged on described activity adjustment bar (4) movably, and described slide block (5) is fixedly connected with described stationary platform (7).
7. self-priming experiment instrument according to claim 6, it is characterized in that, described supporting construction also comprises knob (6), described knob (6) is connected on described slide block (5), and described slide block (5) can be fixed on described activity adjustment bar (4) by described knob (6).
8. a self-priming experiment detection method, is characterized in that, adopt the self-priming experiment instrument according to any one of claim 3 to 7 to carry out experiment and detect, described self-priming experiment detection method comprises the following steps:
Step S1: open computing machine (10), and conducting balance (9), make the described self-priming experiment instrument preheating schedule time;
Step S2: experimental water is placed in the container cavity of casing;
Step S3: the related experiment parameter of input rock core rock sample, and described rock core rock sample is put into claim thing basket (8) to test.
9. self-priming experiment detection method according to claim 8, is characterized in that, described relevant examination experiment parameter comprises the density of experimental temperature, factor of porosity, volume of voids and experimental water.
10. self-priming experiment detection method according to claim 8, it is characterized in that, described self-priming experiment instrument is self-priming experiment instrument according to claim 7, in the process of described step S3, make slide block (5) mobile by adjusting knob (6), be immersed in described experimental water to make described rock core rock sample.
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| CN108717031A (en) * | 2018-05-08 | 2018-10-30 | 中国石油大学(北京) | A kind of method and apparatus of quantitatively characterizing shale reservoir rock wettability |
| CN113295569A (en) * | 2020-02-24 | 2021-08-24 | 中国石油天然气股份有限公司 | Method and device for detecting protection effect of shale oil and gas reservoir |
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| CN108717031A (en) * | 2018-05-08 | 2018-10-30 | 中国石油大学(北京) | A kind of method and apparatus of quantitatively characterizing shale reservoir rock wettability |
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| CN113295569A (en) * | 2020-02-24 | 2021-08-24 | 中国石油天然气股份有限公司 | Method and device for detecting protection effect of shale oil and gas reservoir |
| CN113295569B (en) * | 2020-02-24 | 2023-04-25 | 中国石油天然气股份有限公司 | Shale oil-gas reservoir protection effect detection method and device |
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