CN103306651A - Multi-angle displacement CT scanning system based on top gas injection - Google Patents
Multi-angle displacement CT scanning system based on top gas injection Download PDFInfo
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- CN103306651A CN103306651A CN2013101819326A CN201310181932A CN103306651A CN 103306651 A CN103306651 A CN 103306651A CN 2013101819326 A CN2013101819326 A CN 2013101819326A CN 201310181932 A CN201310181932 A CN 201310181932A CN 103306651 A CN103306651 A CN 103306651A
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Abstract
The invention discloses a multi-angle displacement CT scanning system based on top gas injection. The system comprises a CT scanning system, a displacement system, a stress system, a pressure measuring system, a heterogeneous multi-layer core clamp for CT scanning and a metering system, wherein the core clamp for CT scanning can be adjusted in any one of the horizontal direction and the vertical direction and is fixed. A rotary system is introduced to search the influence of the reservoir inclination angle, and cooperates with an existing CT scanner to develop the top vertical gas injection experiment to the maximum limit.
Description
Technical field
The present invention relates to a kind of simulation oil field and close notes Mining Test device, be specifically related to a kind of CT scan system based on the displacement of crestal gas injection multi-angle.
Background technology
The CT technical development is very fast, as measuring technology conventional in the core analysis, the aspects such as the non-homogeneity that is widely used in core description, rock core is measured, the core sample handling procedure is determined, the measurement of crack quantitative analysis, online saturation ratio, flowing experiment research.By physical properties of rock being carried out quantitatively and graphical analysis, intuitively characterize pore structure, non-homogeneity, the remaining oil distribution of rock; Displacement process is carried out visual research, understand deeply oil recovery mechanism, monitoring fluid dispersion and channelling characteristic, understanding polymer flooding to improving the sweep area impact, disclose formation damage mechanism etc.Utilize saturation ratio that the CT technology can obtain the rock core internal flow along the journey distributed intelligence, utilize the CT technology more can obtain intuitively fluid saturation distributed intelligence in each layer, and can further study because the channelling phenomenon that Action of Gravity Field causes.
After waterflooding extraction enters high water-cut stage, still have a large amount of remaining oils extraction to come.Adopt existing raising recovery ratio method often to exist poor for applicability, improve the recovery ratio amplitude limited, the problems such as high expensive.Abroad, the vertical gas injection in top has developed into a kind of low cost, efficient oil recovery technique, the pattern exploitation of usually taking at the scene top straight well gas injection bottom water horizontal well to recover the oil in the practical application, and exploitation effect is very good.Grasp the vertical gas injection technology in top and improve the basis that recovery mechanism is this Technique Popularizing application and optimal design.Simultaneously, in the practical application link, the deep understanding that this technology is improved recovery mechanism also helps the east China original oil zone to utilize this technological adjustment exploitation measure, improve development effectiveness has certain directive significance.
Present research about the vertical gas injection in top; the large-scale thing mould of full-hole core or the sand-filling tube models of adopting carry out experimental study more; the starting point of problem analysis mainly is to study injection rate to the impact of final effect by the pressure of monitoring experiment overall process and occurrence; seldom there is experiment the angle of its impact to be studied the mechanism of this technology from Oil, Water, Gas three's distribution, migration and various factors, about the experimental design thinking of this respect also seldom.
The present invention is based on existing CT scan monitoring fluid saturation technology, realize oil, gas, water three's distribution, migration in the experiment of monitoring crestal gas injection by the design specialized clamper.
Summary of the invention
The purpose of this invention is to provide a kind of CT scan system based on the displacement of crestal gas injection multi-angle, this system vertically gas injection experiment carries out horizontal sweep, realization utilizes in the CT scan technical Analysis experiment Oil, Water, Gas three to distribute migration rule and many factors to its impact, improves recovery mechanism from the vertical gas injection technology in angle analysis top than microcosmic.
For achieving the above object, technical scheme of the present invention is as follows:
A kind of CT scan system based on the displacement of crestal gas injection multi-angle, it comprises CT scan system, displacement system, covers pressing system, pressure-measuring system, be used for heterogeneous multi-layer core holding unit and the metering system of CT scan; The core holding unit that wherein should be used for CT scan is to comprise polyether-ether-ketone resin shell 8, and rubber tube 9 comes directly towards 6 under the rock core top end 10, rock core, rock core model 7, inlet 11, liquid outlet 5, base 2, lower end support 3, upper end support 4 and vertical support frame 12; Lower end support 3 links to each other polyether-ether-ketone resin shell 8 with upper end support 4 with base, wherein, one end of described shell is connected with lower end support, and can be around lower end support 3 rotations, described shell can turn to level, and the other end of described shell can be supported on the described upper end support 4, one end of vertical support frame 12 can rotate and be connected with base, the other end and polyether-ether-ketone resin shell 8 are fixedly connected with by removably, and it can be adjusted to polyether-ether-ketone resin shell 8 any direction between the horizontal and vertical and fixing.
In a preferred embodiment of the present invention, described core holding unit is provided with plumb line use level hornwork at polyether-ether-ketone resin shell 8, is used for the angle of inclination of core holding unit is measured.
In another preferred embodiment of the present invention, on the top a plurality of liquid outlets are set under this rock core, the rock core liquid outlet is communicated with rock core room and metering system, and each liquid outlet is aimed at respectively one deck rock core model.
Aforesaid CT scan system based on the displacement of crestal gas injection multi-angle, wherein, these rubber tube 9 outsides are preferably cube, and inside has the cube cavity to hold the cube rock core, and its two ends have circular interface.
In another preferred embodiment of the present invention, described lower end support is connected with polyether-ether-ketone resin shell 8 by rotating shaft, this rotating shaft apart from the distance of base 2 less than 1/2 of clamper length, preferably less than 1/3.
Beneficial effect of the present invention is, the first, and metal material is very strong to the absorption of X ray in the CT scan process, this will cause ray to be difficult to penetrate rock core, thereby cause serious measure error, the design adopts the peek material to make the clamper cylindrical shell, has reduced well the impact of this respect.The clamper of existing vertical gas injection rock core CT scan system is too high, enters the scanning area difficulty; On the other hand, scan slice thickness increases, and produces ray hardened meeting and causes very large measure error.The introducing of rotary system has overcome the inconvenience of CT scan in the experimentation well, and simultaneously, the introducing of rotary system also can with the impact at Study In Reservoir inclination angle, be mated existing CT scanner and carry out the vertical gas injection experiment in top to greatest extent.
Description of drawings
The following drawings only is intended to the present invention done and schematically illustrates and explain, not delimit the scope of the invention.Wherein,
Fig. 1 is the structural representation of CT scan system when scanning sample introduction based on the displacement of crestal gas injection multi-angle of the present invention;
Fig. 2 is the structural representation of core holding unit of the present invention when displacement test;
Fig. 3 is the structural representation of core holding unit;
Fig. 4 is that core holding unit is 45 ° of laying state structural representations;
Fig. 5 is the phantom drawing of rear end support.
The specific embodiment
Understand for technical characterictic of the present invention, purpose and effect being had more clearly, now contrast description of drawings the specific embodiment of the present invention.
The vertical stable displacement experiment of embodiment 1 crestal gas injection
First with rock core in clamper water drive to needed water saturation, then carry out crestal gas injection in the arrival end gas injection and vertically stablize the displacement of reservoir oil, and at the port of export production fluid is measured, until reach experiment purpose, the polyether-ether-ketone resin shell 8 of clamper was in vertical position and fixed by vertical support frame 12 this moment.
Regularly carry out saturation ratio delta data in the gatherer process with CT scan in the process.
During each scanning, first vertical support frame 12 and polyether-ether-ketone resin shell 8 are untied, and vertical support frame is turned to lies on the base, the clamper of vertically putting is transferred to level and fixing by lower end support 3 and upper end support 4 in the situation that does not change other state, then scan in the CT scan zone, then again clamper is held up to vertical and fixing by vertical support frame 12, this scanning process finishes, and carries out CT scan by scanning system of the present invention and can avoid gravity for the inside result's of every one deck impact.
As shown in Figure 1, multilayer non-homogeneous model pilot system comprises CT scan system 1, displacement system, covers pressing system, pressure-measuring system, metering system (detailed description of above-mentioned parts with reference to Chinese patent CN102095740B, notice of authorization day 2012.08.08) and core holding unit.
CT scan system (1) can use conventional Medical CT scanning system, GE Light Speed 8 multi-layer helical scanning systems for example, and minimum scanning bed thickness 0.625mm, maximum scan voltage 140kV, the accuracy of measuring saturation ratio is 1%.
The displacement system is comprised of two high-pressure metering pumps, can carry simultaneously two kinds of fluids, is the power source of displacement.Flow rates: 0.001-15ml/min, maximum pressure: 10000psi (68.94MPa).
Cover pressing system and be comprised of pump, for example JB-800 pump group is used for adding confined pressure to core holding unit and rock core, the simulation burden pressure.Maximum confined pressure 70MPa.
Pressure-measuring system is comprised of a plurality of pressure sensors, and two high-pressure transducer ranges are 70MPa, links to each other with the displacement pump, also has in addition three low-pressure sensor, is used for measuring the fluid mouth pressure, and range is respectively 0.05MPa, 0.5MPa, 5MPa.Precision is 0.25%.
Cumulative oil production and cumulative liquid production when the water breakthrough time that the metering system record is every layer, water breakthrough.
Wherein, core holding unit is to be the custom-designed core holding unit for CT scan of pilot system of the present invention, please refer to Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, it comprises polyether-ether-ketone resin shell 8, rubber tube 9, rock core top end 10, come directly towards 6 under the rock core, rock core model 7, inlet 11, liquid outlet 5, base 2, lower end support 3, upper end support 4 and vertical support frame 12; Lower end support 3 links to each other polyether-ether-ketone resin shell 8 with upper end support 4 with base, wherein, one end of shell 8 is connected with lower end support 3 by rotating shaft 31, and can be by this rotating shaft 31 around lower end support 3 rotations, when shell 8 turns to level, the other end of shell 8 can be supported on the described upper end support 4, upper end support 4 is connected (as shown in Figure 2) with polyether-ether-ketone resin shell 8 for contact, one end of vertical support frame 12 can rotate and base 2 is connected, the other end can be fixed by removably with polyether-ether-ketone resin shell 8, and it can be adjusted to polyether-ether-ketone resin shell 8 any direction between the horizontal and vertical and fixing.Concrete angle of inclination can be measured by the plumb line 14 use level hornworks 13 that are fixed on the polyether-ether-ketone resin shell 8.It is a specific embodiment that clamper shown in Figure 4 is 45 ° of laying states.
Wherein, on the top a plurality of liquid outlets are set under the rock core, the rock core liquid outlet is communicated with rock core room and metering system, and each liquid outlet 5 is aimed at respectively one deck rock core model.
In addition, rubber tube 9 outsides are cube or cylinder among the present invention, and inside has the cube cavity holding the cube rock core, or the inside of this rubber tube 9 forms cylindrical cavity to hold the cylinder rock core, and its two ends have circular interface.
Among the feasible embodiment, described rock core model is the single or multiple lift rock core.Wherein, the individual layer rock core is cylindrical or cube.
A concrete technical scheme is, the rotating shaft 31 of lower end support 3 less than 1/2 of clamper length, preferably less than 1/3, thereby can reduce scanning area and scanning bed distance apart from the distance of base 2 effectively, improves versatility and the compliance of scanning device.
In addition, vertical support frame 12 is with the connected mode of shell 8 or to adopt conventional structure, as by at shell 8 draw-in groove being set, or connector is set by connections such as pins, bolt at shell 8, as long as can be by the support of vertical support frame 12, make shell 8 remain on the upright or angle of inclination of regulation just passable, its concrete structure is not limited.And an end of this vertical support frame 12 can also be connected with upper end support 4 rotationally, as shown in Figure 4.
Please cooperate referring to Fig. 5, in a specific embodiment, lower end support 3 has the rack body 30 that can be fixedly connected with base 2, the clip 32 that can be fixedly connected with an end of shell 8, be connected by rotating shaft 31 between described clip 32 and the rack body 30, thereby make the shell 8 can be with respect to lower end support 3 rotations by this rotating shaft 31.
The above only is the schematic specific embodiment of the present invention, is not to limit scope of the present invention.Any those skilled in the art, the equivalent variations of doing under the prerequisite that does not break away from design of the present invention and principle and modification all should belong to the scope of protection of the invention.And need to prove, each ingredient of the present invention is not limited in above-mentioned overall applicability, each technical characterictic of describing in the manual of the present invention can select one to adopt separately or select the multinomial use that combines according to actual needs, therefore, other combination relevant with this case inventive point and concrete the application have been contained in the present invention in the nature of things.
Claims (9)
1. CT scan system based on the displacement of crestal gas injection multi-angle, it comprises CT scan system, displacement system, covers pressing system, pressure-measuring system, be used for heterogeneous multi-layer core holding unit and the metering system of CT scan; The core holding unit that wherein should be used for CT scan is to comprise polyether-ether-ketone resin shell (8), rubber tube (9), rock core top end (10), top (6) under the rock core, rock core model (7), inlet (11), liquid outlet (5), base (2), lower end support (3), upper end support (4) and vertical support frame (12); Lower end support (3) links to each other polyether-ether-ketone resin shell (8) with upper end support (4) with base, wherein, one end of shell (8) is connected with lower end support (3), and can rotate around lower end support (3), described shell can turn to level, and the other end of described shell can be supported on the described upper end support (4), one end of vertical support frame (12) can rotate and be connected with described base, the other end is fixedly connected with by removably with polyether-ether-ketone resin shell (8), and it can be adjusted to polyether-ether-ketone resin shell (8) any direction between the horizontal and vertical and fix.
2. the CT scan system based on the displacement of crestal gas injection multi-angle according to claim 1 is characterized in that, described core holding unit is provided with plumb line use level hornwork at polyether-ether-ketone resin shell (8).
3. the CT scan system based on the displacement of crestal gas injection multi-angle according to claim 1, it is characterized in that, on the top a plurality of liquid outlets are set under this rock core, the rock core liquid outlet is communicated with rock core room and metering system, and each liquid outlet is aimed at respectively one deck rock core model.
4. the CT scan system based on the displacement of crestal gas injection multi-angle according to claim 1, it is characterized in that, this rubber tube (9) outside is cube or cylinder, inside has the cube cavity to hold cube rock core or cylindrical cavity to hold the cylinder rock core, and its two ends have circular interface.
5. the CT scan system based on the displacement of crestal gas injection multi-angle according to claim 1 is characterized in that, described rock core model is the single or multiple lift rock core.
6. the CT scan system based on the displacement of crestal gas injection multi-angle according to claim 5 is characterized in that, described individual layer rock core is cylindrical or cube.
7. the CT scan system based on the displacement of crestal gas injection multi-angle according to claim 1, it is characterized in that, described lower end support (3) is connected with polyether-ether-ketone resin shell (8) by rotating shaft (31), this rotating shaft apart from the distance of base (2) less than 1/2 of clamper length.
8. the CT scan system based on the displacement of crestal gas injection multi-angle according to claim 7 is characterized in that, the axis of rotation (31) of described lower end support (3) apart from the distance of base (2) less than 1/3 of clamper length.
9. the CT scan system based on the displacement of crestal gas injection multi-angle according to claim 1 is characterized in that, described upper end support (4) and lower end support (3) are rigid material.
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| CN201310181932.6A CN103306651B (en) | 2013-05-16 | 2013-05-16 | Based on the CT scan system of crestal gas injection multi-angle displacement |
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| CN201310181932.6A CN103306651B (en) | 2013-05-16 | 2013-05-16 | Based on the CT scan system of crestal gas injection multi-angle displacement |
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| CN103306651B CN103306651B (en) | 2016-03-09 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106121603A (en) * | 2016-06-25 | 2016-11-16 | 东北石油大学 | A kind of device simulating different angle oil reservoir oil displacement efficiency and method |
| CN111794726A (en) * | 2020-07-14 | 2020-10-20 | 中国石油大学(华东) | Device and method for accurately representing change of pore structure of rock of steam huff and puff reservoir based on CT (computed tomography) in-situ experiment |
| CN114012270A (en) * | 2021-09-29 | 2022-02-08 | 合肥磐石智能科技股份有限公司 | Carving robot with self-overturning function |
| CN114166999A (en) * | 2021-12-01 | 2022-03-11 | 中国石油大学(北京) | Oil reservoir type gas storage simulation experiment device and method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5161407A (en) * | 1990-10-16 | 1992-11-10 | Iowa State University Research Foundation, Inc. | Means and method of soil water desorption |
| CN2556632Y (en) * | 2002-01-29 | 2003-06-18 | 大庆油田有限责任公司 | Surround type sealed core holder |
| CN102095740A (en) * | 2010-12-17 | 2011-06-15 | 中国石油天然气股份有限公司 | Computed tomography (CT) scanning heterogeneous model testing system |
| CN102539112A (en) * | 2012-02-09 | 2012-07-04 | 中国石油天然气股份有限公司 | System for imitating rising rule of bottom water based on bottom water gas reservoir |
| CN203321470U (en) * | 2013-05-16 | 2013-12-04 | 中国石油天然气股份有限公司 | CT scanning system based on top gas injection multi-angle displacement process |
-
2013
- 2013-05-16 CN CN201310181932.6A patent/CN103306651B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5161407A (en) * | 1990-10-16 | 1992-11-10 | Iowa State University Research Foundation, Inc. | Means and method of soil water desorption |
| CN2556632Y (en) * | 2002-01-29 | 2003-06-18 | 大庆油田有限责任公司 | Surround type sealed core holder |
| CN102095740A (en) * | 2010-12-17 | 2011-06-15 | 中国石油天然气股份有限公司 | Computed tomography (CT) scanning heterogeneous model testing system |
| CN102539112A (en) * | 2012-02-09 | 2012-07-04 | 中国石油天然气股份有限公司 | System for imitating rising rule of bottom water based on bottom water gas reservoir |
| CN203321470U (en) * | 2013-05-16 | 2013-12-04 | 中国石油天然气股份有限公司 | CT scanning system based on top gas injection multi-angle displacement process |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106121603A (en) * | 2016-06-25 | 2016-11-16 | 东北石油大学 | A kind of device simulating different angle oil reservoir oil displacement efficiency and method |
| CN106121603B (en) * | 2016-06-25 | 2018-09-04 | 东北石油大学 | A kind of device and method for simulating different angle oil reservoir oil displacement efficiency |
| CN111794726A (en) * | 2020-07-14 | 2020-10-20 | 中国石油大学(华东) | Device and method for accurately representing change of pore structure of rock of steam huff and puff reservoir based on CT (computed tomography) in-situ experiment |
| CN114012270A (en) * | 2021-09-29 | 2022-02-08 | 合肥磐石智能科技股份有限公司 | Carving robot with self-overturning function |
| CN114012270B (en) * | 2021-09-29 | 2022-04-08 | 合肥磐石智能科技股份有限公司 | Carving robot with self-overturning function |
| CN114166999A (en) * | 2021-12-01 | 2022-03-11 | 中国石油大学(北京) | Oil reservoir type gas storage simulation experiment device and method |
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| CN103306651B (en) | 2016-03-09 |
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