CN102967609B - Oil deposit percolation experimental model for measuring multi-phase fluid saturation distribution and measuring method - Google Patents
Oil deposit percolation experimental model for measuring multi-phase fluid saturation distribution and measuring method Download PDFInfo
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- CN102967609B CN102967609B CN201210490675.XA CN201210490675A CN102967609B CN 102967609 B CN102967609 B CN 102967609B CN 201210490675 A CN201210490675 A CN 201210490675A CN 102967609 B CN102967609 B CN 102967609B
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- blind hole
- ray detector
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Abstract
The invention discloses an oil deposit percolation experimental model for measuring multi-phase fluid saturation distribution and a measuring method. The experimental model comprises a closable container and an oil deposit model, wherein the closable container is located at a central position of the experimental model, the oil deposit model is placed into the closable container, a movable top cover and a fixed base plate are arranged on the closable container, a radiation source is placed below the closable container, a ray detector is placed above the closable container, and the radiation source and the ray detector are commonly arranged on a moving stander. The oil deposit percolation experimental model for the measuring multi-phase fluid saturation distribution and the measuring method are applied to measuring of saturation distribution curves of big and thick models, and are a novel system and a novel method capable of measuring oil-gas-water saturation distribution of big, thick and high-pressure oil deposit models by a gamma ray attenuation method; and furthermore, the method has very high precision, the test time is greatly shortened, the time consumption is equivalent to 1/300 of former test time, and the measuring precision is improved.
Description
Technical field
The present invention relates to the technique study that in a kind of flow event, heterogeneous fluid saturation distribution is measured, belong to the oil reservoir lab simulation field of Oil-Gas Field Development Engineering.
Background technology
In oilfield exploitation procedure, Research on Oil, gas, water multiphase porous flow rule.Generally come the migration of simulated oil air water and the distribution of remaining oil by the seepage tests of indoor many well patterns large-sized model, therefore must measure saturation degree scatter chart in the heterogeneous fluid flow event of flow through oil reservoir empirical model.
Gamma-rays damped method is the method for oil gas water saturation distribution in the test reservoir model that current precision is the highest.
Gamma-rays damped method measuring principle is: different fluid is different to gamma-rays absorptivity, and when fluid saturation is different, model is different to the degree of ray attenuation.According to the variable quantity of the intensity of the ray of breakthrough model, often kind of fluid saturation can be drawn like this.
This method of testing is only applicable to the model of chamber wall thin (1-3cm).For thick greatly, high pressure reservoir model, need thick can closed container, as reservoir model size diameter 40cm, external pressure needs 16MPa, and can reach 10cm by closed container wall thickness, this will affect measuring accuracy, and tests consuming time long.
Summary of the invention
The technical issues that need to address of the present invention are just the defect overcoming prior art, a kind of heterogeneous fluid saturation distribution is provided to measure flow through oil reservoir empirical model and measuring method, it is applied to measures large thick Saturation of calibration models distribution curve, being a kind of available gamma-rays damped method newly to distribute the system and method measured to oil gas water saturation that is thick greatly, high pressure reservoir model, and the method has very high precision, substantially reduce the test duration, consuming time be equivalent to before the test duration 1/300, improve measuring accuracy.
For solving the problem, the present invention adopts following technical scheme:
The invention provides a kind of heterogeneous fluid saturation distribution and measure flow through oil reservoir empirical model, described empirical model comprise be positioned at empirical model middle position can closed container, being positioned over can reservoir model in closed container, top cover and base plate can be provided with by closed container, radiographic source can be placed below closed container, can place ray detector above closed container, radiographic source and ray detector are placed on moving frame jointly.
Described can closed container be canister, closed container top cover and base plate can evenly be provided with multiple equally distributed blind hole, the obstructed side of blind hole is container inner wall side, can blind hole equal and opposite in direction, position one_to_one corresponding on closed container top cover and base plate, a pair mutually corresponding blind hole is on same central axis.
The shape of blind hole is isodiametric circular hole, and the axis between blind hole is parallel to each other.
Radiographic source and ray detector are on the same axis.
Moving frame is numerical control moving frame.
The present invention discloses a kind of measuring method utilizing described heterogeneous fluid saturation distribution to measure flow through oil reservoir empirical model measurement heterogeneous fluid saturation distribution, radiographic source and ray detector synchronizing moving is kept in test process, synchronizing moving radiographic source and ray detector is come by moving frame, can closed container top and can measuring successively by the measurement point of upper some bottom closed container to what be equipped with reservoir model.Ensure the center main dead in line with corresponding blind hole place when measuring at test point place, described radiographic source stops the regular hour in test point, as 50s, ensures that ray detector obtains enough photon collection amounts.
Concrete, described method comprises the following steps:
The first step, moves to the blind hole position at measuring point place by radiographic source and ray detector; Ensure the dead in line at the ray that radiographic source is launched and ray detector and blind hole place;
Second step, radiographic source produces ray, penetrate successively can closed container base plate, reservoir model, can closed container top cover, received by ray detector; Stop herein, ensure that ray detector obtains enough photon collection amounts;
3rd step, after second step test point completes mensuration, radiographic source and ray detector be next measuring point along with moving frame moves to, and measures successively, obtains the transmitted intensity of multiple blind hole correspondence position;
4th step, according to the transmitted intensity obtained in multiple blind hole corresponding position, calculates the heterogeneous fluid saturation distribution of multiple blind hole corresponding position, draws out whole saturation distribution figure.
The present invention uses dot matrix to measure the area measurement replacing routine, the method for lining by line scan to carry out the measurement of heterogeneous fluid saturation distribution, avoids and tests for thick greatly, High Pressure Model the defect that length consuming time, measuring accuracy are not high, radiant quantity is large.Metal shell top cover and base plate offer the setting of multiple blind hole, shorten the test duration further, improve measuring accuracy.
The present invention and existing Technical comparing have following beneficial effect:
(1) the present invention uses dot matrix to measure the area measurement replacing routine, the method for lining by line scan to carry out the measurement of heterogeneous fluid saturation distribution, avoid and length consuming time is tested for thick greatly, High Pressure Model, measuring accuracy is not high, needs the defect that radiographic source radiant quantity is large.
(2) setting of blind hole makes ray significantly be reduced by the damping capacity of high pressure reservoir model, ensure that the precision of test point place data.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is blind hole floor plan schematic diagram of the present invention.
Fig. 3 is blind hole cross-sectional view of the present invention.
Embodiment
As shown in Figure 1, the invention provides a kind of heterogeneous fluid saturation distribution and measure flow through oil reservoir empirical model, described empirical model comprise be positioned at empirical model middle position can closed container 1, being positioned over can reservoir model 2 in closed container, reservoir model diameter 40cm, height 20cm, movable top cover 3 and fixing base plate 4 can be provided with by closed container, the thickness of top cover and base plate reaches 10cm, radiographic source 5 can be placed below closed container, can place ray detector 6 above closed container, radiographic source and ray detector are placed on moving frame 7 jointly.
As shown in Figure 2 and Figure 3, described can closed container be canister, closed container top cover and base plate can evenly be provided with multiple equally distributed blind hole 8, as having 118 blind holes, the degree of depth of blind hole is 9cm, the obstructed side of blind hole is container inner wall side, can blind hole equal and opposite in direction, position one_to_one corresponding on closed container top cover and base plate, and a pair mutually corresponding blind hole is on same central axis.
The shape of blind hole is isodiametric circular hole, and the axis between blind hole is parallel to each other.
As shown in Figure 1, radiographic source and ray detector are on same axis 9.
Moving frame is numerical control moving frame.
The present invention discloses a kind of measuring method utilizing described heterogeneous fluid saturation distribution to measure flow through oil reservoir empirical model measurement heterogeneous fluid saturation distribution, radiographic source and ray detector synchronizing moving is kept in test process, synchronizing moving radiographic source and ray detector is come by moving frame, can closed container top and can measuring successively by the measurement point of upper some bottom closed container to what be equipped with reservoir model.Ensure the center main dead in line with corresponding blind hole place when measuring at test point place, described radiographic source stops the regular hour in test point, as 50s, ensures that ray detector obtains enough photon collection amounts.
Concrete grammar is:
The first step, moves to the blind hole position at measuring point place by radiographic source and ray detector; Ensure the dead in line at the ray that radiographic source is launched and ray detector and blind hole place;
Second step, radiographic source produces ray, penetrate successively can closed container base plate, reservoir model, can closed container top cover, received by ray detector; Stop herein, ensure that ray detector obtains enough photon collection amounts;
3rd step, after second step test point completes mensuration, radiographic source and ray detector be next measuring point along with moving frame moves to, and measures successively, obtains the transmitted intensity of multiple blind hole correspondence position;
4th step, according to the transmitted intensity obtained in multiple blind hole corresponding position, calculates the heterogeneous fluid saturation distribution of multiple blind hole corresponding position, draws out whole saturation distribution figure.
The present invention uses dot matrix to measure the area measurement replacing routine, the method for lining by line scan to carry out the measurement of heterogeneous fluid saturation distribution, avoids and tests for thick greatly, High Pressure Model the defect that length consuming time, measuring accuracy are not high, radiant quantity is large.Metal shell top cover and base plate offer the setting of multiple blind hole, shorten the test duration further, improve measuring accuracy.
The present invention and existing Technical comparing have following beneficial effect:
(1) the present invention uses dot matrix to measure the area measurement replacing routine, the method for lining by line scan to carry out the measurement of heterogeneous fluid saturation distribution, avoid and length consuming time is tested for thick greatly, High Pressure Model, measuring accuracy is not high, needs the defect that radiographic source radiant quantity is large.
(2) setting of blind hole makes ray significantly be reduced by the damping capacity of high pressure reservoir model, ensure that the precision of test point place data.
Last it is noted that obviously, above-described embodiment is only for example of the present invention is clearly described, and the restriction not to embodiment.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without the need to also giving all embodiments.And thus the apparent change of amplifying out or variation be still among protection scope of the present invention.
Claims (2)
1. flow through oil reservoir empirical model measured by a heterogeneous fluid saturation distribution, it is characterized in that: described empirical model comprise be positioned at empirical model middle position can closed container, being positioned over can reservoir model in closed container, reservoir model diameter 40cm, height 20cm, movable top cover and fixing base plate can be provided with by closed container, the thickness of top cover and base plate is 10cm, radiographic source can be placed below closed container, can place ray detector above closed container, radiographic source and ray detector are placed on moving frame jointly;
Described can closed container be canister, closed container top cover and base plate can evenly be provided with 118 equally distributed blind holes, the degree of depth of blind hole is 9cm, the obstructed side of blind hole is container inner wall side, can blind hole equal and opposite in direction, position one_to_one corresponding on closed container top cover and base plate, a pair mutually corresponding blind hole is on same central axis; The shape of blind hole is isodiametric circular hole, and the axis between blind hole is parallel to each other;
Radiographic source and ray detector are on the same axis;
Moving frame is numerical control moving frame.
2. utilize the heterogeneous fluid saturation distribution described in claim 1 to measure the measuring method that heterogeneous fluid saturation distribution measured by flow through oil reservoir empirical model, it is characterized in that: in test process, keep radiographic source and ray detector synchronizing moving, synchronizing moving radiographic source and ray detector is come by moving frame, can closed container top and can measuring successively by the measurement point of upper some bottom closed container to what be equipped with reservoir model; Ensure the center main dead in line with corresponding blind hole place when measuring at test point place, described radiographic source stops 50s in test point, ensures that ray detector obtains enough photon collection amounts;
Described method comprises the following steps:
The first step, moves to the blind hole position at measuring point place by radiographic source and ray detector; Ensure the dead in line at the ray that radiographic source is launched and ray detector and blind hole place;
Second step, radiographic source produces ray, penetrate successively can closed container base plate, reservoir model, can closed container top cover, received by ray detector; Stop herein, ensure that ray detector obtains enough photon collection amounts;
3rd step, after second step test point completes mensuration, radiographic source and ray detector be next measuring point along with moving frame moves to, and measures successively, obtains the transmitted intensity of multiple blind hole correspondence position;
4th step, according to the transmitted intensity obtained in multiple blind hole corresponding position, calculates the heterogeneous fluid saturation distribution of multiple blind hole corresponding position, draws out whole saturation distribution figure.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210490675.XA CN102967609B (en) | 2012-11-28 | 2012-11-28 | Oil deposit percolation experimental model for measuring multi-phase fluid saturation distribution and measuring method |
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| CN201210490675.XA CN102967609B (en) | 2012-11-28 | 2012-11-28 | Oil deposit percolation experimental model for measuring multi-phase fluid saturation distribution and measuring method |
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| CN106053764B (en) * | 2016-07-21 | 2017-12-15 | 张军龙 | Synclinal structure basin Water Soluble Gas transported simulation experimental method is stored up from being born from |
| CN114965579A (en) * | 2021-02-24 | 2022-08-30 | 中国石油化工股份有限公司 | Oil, gas and water three-phase fluid saturation calibration test device and method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1127553A (en) * | 1993-04-05 | 1996-07-24 | 卡迪亚航海者公司 | X-ray detector for a low dosage scanning beam digital X-ray imaging system |
| CN101261235A (en) * | 2008-05-06 | 2008-09-10 | 罗平安 | Crude oil gas fraction and moisture percentage dual energy x ray measurement method |
| CN101762820A (en) * | 2009-12-18 | 2010-06-30 | 东南大学 | Flat panel detector |
| CN102165307A (en) * | 2008-09-24 | 2011-08-24 | Ge传感与检测技术有限公司 | Device for testing the material of test objects by means of x-ray radiation |
| CN203299095U (en) * | 2012-11-28 | 2013-11-20 | 中国石油大学(北京) | Multi-phase fluid saturation distribution measuring oil deposit percolation experimental model system |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1127553A (en) * | 1993-04-05 | 1996-07-24 | 卡迪亚航海者公司 | X-ray detector for a low dosage scanning beam digital X-ray imaging system |
| CN101261235A (en) * | 2008-05-06 | 2008-09-10 | 罗平安 | Crude oil gas fraction and moisture percentage dual energy x ray measurement method |
| CN102165307A (en) * | 2008-09-24 | 2011-08-24 | Ge传感与检测技术有限公司 | Device for testing the material of test objects by means of x-ray radiation |
| CN101762820A (en) * | 2009-12-18 | 2010-06-30 | 东南大学 | Flat panel detector |
| CN203299095U (en) * | 2012-11-28 | 2013-11-20 | 中国石油大学(北京) | Multi-phase fluid saturation distribution measuring oil deposit percolation experimental model system |
Non-Patent Citations (1)
| Title |
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| 底水油藏水平井物理模拟实验研究;路辉等;《内蒙古石油化工》;20111231(第4期);99-103 * |
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