CN102141501A - Magnetization injection increasing and pressure reducing test system - Google Patents
Magnetization injection increasing and pressure reducing test system Download PDFInfo
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- CN102141501A CN102141501A CN 201010601953 CN201010601953A CN102141501A CN 102141501 A CN102141501 A CN 102141501A CN 201010601953 CN201010601953 CN 201010601953 CN 201010601953 A CN201010601953 A CN 201010601953A CN 102141501 A CN102141501 A CN 102141501A
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- 238000012360 testing method Methods 0.000 title claims abstract description 100
- 238000002347 injection Methods 0.000 title claims abstract description 34
- 239000007924 injection Substances 0.000 title claims abstract description 34
- 230000005415 magnetization Effects 0.000 title claims abstract description 27
- 239000011435 rock Substances 0.000 claims abstract description 58
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 31
- 238000006073 displacement reaction Methods 0.000 claims abstract description 29
- 239000007788 liquid Substances 0.000 claims abstract description 20
- 230000003190 augmentative effect Effects 0.000 claims description 27
- 230000000994 depressogenic effect Effects 0.000 claims description 6
- 239000012530 fluid Substances 0.000 claims description 5
- 238000004804 winding Methods 0.000 claims description 2
- 239000000463 material Substances 0.000 claims 1
- 230000035699 permeability Effects 0.000 abstract description 12
- 230000007246 mechanism Effects 0.000 abstract description 4
- 238000011084 recovery Methods 0.000 abstract description 4
- 239000003921 oil Substances 0.000 abstract 2
- 239000010779 crude oil Substances 0.000 abstract 1
- 238000009434 installation Methods 0.000 description 10
- 230000008859 change Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 239000003129 oil well Substances 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000003446 memory effect Effects 0.000 description 1
- 230000004060 metabolic process Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
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- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The invention discloses a magnetization injection-increasing and pressure-reducing test system, which comprises: the flowing device is used for placing the test rock core and providing ring pressure for the test rock core; the driving device is used for providing different displacement pressures or liquid flow rates for the test rock core; the buffer device is used for storing test water, and the driving device drives the test water to the rock core; the magnetic treatment device is used for providing different magnetic field strengths for the test rock core; the constant temperature device is used for providing constant temperature for the test rock core; the driving device sets displacement pressure or liquid flow rate, and drives the test water in the buffer device to flow through the magnetic treatment device and then to be pressed to the test rock core in the flowing device; a thermostatic device provides a constant temperature to the buffer device, the magnetic treatment device and the flow device. The embodiment of the invention can conveniently, quickly and accurately measure the permeability and the pressure gradient of the rock core under different magnetic field strengths and different temperatures, and can be used for researching the magnetization, injection and pressure reduction mechanism of the low-permeability oil reservoir, guiding the field application of the oil field and improving the recovery ratio of crude oil.
Description
Technical field
The present invention relates to the magnetic treatment technique field, relate in particular to a kind of test macro that is used to study low permeability oil field, is a kind of test macro that low permeability oil field magnetic treatment augmented injection reduces pressure gradient that is used to study concretely.
Background technology
The effective water filling in oil field can keep reservoir pressure, is important measures of oil well extended high rate stable yields.At present, each oil field major part all is to adopt the mode of water filling to replenish producing energy, and development effectiveness is better.Low permeability oil field accounts for more than 60% in the existing undeveloped reserves, and the rationally efficient exploitation of low permeability oil field has the important strategic meaning.Low-permeability oil deposit reservoir pore throat complex structure, water filling is difficult to effective exploitation, the water injection pressure height, water injection rate is little, does not reach the requirement of reasonable injection allocation, and the oil well output decay is fast.
Discover water after magnetization, variation has taken place in physical property, and main performance has: the pH value increases, and volatility is accelerated, and density diminishes, and dissolved oxygen DO increases, and the solubleness of difficulty soluble salt increases, and surface tension descends, interior can changing.In addition, magnetic field to crystallization, polymerization, wetting, condense, solidify, the metabolic process of precipitation process and biosystem also exerts an influence.Magnetic field also has tangible memory effect (promptly remove the physicochemical property of water system can keep a few hours to a couple of days after the external magnetic field) to water system.Therefore, magnetic treatment is a kind of development effectiveness of improving water injection in low-permeability oilfield, improves the effective means of low permeability oil field recovery ratio.
But, present magnetic treatment technique both domestic and external is primarily aimed at the scene and experimentizes, and does not have the desk research of carrying out of system, therefore, at low permeability oil field magnetic treatment augmented injection mechanism, propose a cover and can instruct the hyposmosis magnetic treatment augmented injection step-down test macro of produced on-site necessary.
Summary of the invention
The objective of the invention is characteristics at low-permeability oil deposit reservoir water filling difficulty, a kind of proving installation of studying the magnetization augmented injection and reducing injection pressure is provided, this device can provide a cover flow, the accurate drive unit of pressure control, be convenient to store the snubber assembly of test water, be convenient to the thermostat of regulating and controlling temperature, rapid and convenient changes the device for magnetic treatment of magnetic field intensity, the flow device that sealing is good, and data presentation device that can the direct-reading data, be implemented in and measure different temperatures in the laboratory, different in flow rate, core permeability and pressure gradient under different displacement pressures and the different magnetic field intensity.
The embodiment of the invention proposes a kind of magnetization augmented injection step-down test macro, comprising: flow device is used to place testing rock core, and presses for described testing rock core provides ring; Drive unit is used for providing different displacement pressure or flow rate of liquid to described testing rock core; Snubber assembly is used to deposit the test water, and described drive unit drives described test water to described rock core; Device for magnetic treatment is used for providing different magnetic field intensitys to described testing rock core; Thermostat is used for providing steady temperature to described testing rock core; Described drive unit is set displacement pressure or flow rate of liquid, drives test water in the described snubber assembly and flows through and be depressed into testing rock core in the described flow device behind the described device for magnetic treatment; Described thermostat provides steady temperature for described snubber assembly, device for magnetic treatment and flow device.
The magnetization augmented injection step-down proving installation of the embodiment of the invention can test out core permeability and pressure gradient under different magnetic field intensity, the different temperatures convenient, fast, exactly, can be used for studying low-permeability oil deposit magnetization augmented injection step-down mechanism, instruct the oil field rig-site utilization, improve the oil recovery factor of low permeability oil field.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those skilled in the art, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structural representation of the magnetization augmented injection step-down proving installation of the embodiment of the invention;
Fig. 2 is the another kind of structural representation of the magnetization augmented injection step-down proving installation of the embodiment of the invention;
Fig. 3 is the sectional view of the magnetic processor of the embodiment of the invention.
Wherein: 1, air compressor machine 2, pump 3, intermediate receptacle 4, six-way valve 5, magnetic processor 6, transformer 7, core holding unit 8, ring is pressed valve 9, test tube 10, constant temperature oven 11, vacuum meter 12, display panel 13 on the pump, voltage display panel 14, data presentation panel 15,16,17,18, valve 19, magnetic processor shell 20, coil 21, dividing plate 22, liquid line passage 23, magnetic processor inwall 24, auxiliary rod 25, circuit path
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that is obtained under the creative work prerequisite.
Fig. 1 is the structural representation of the magnetization augmented injection step-down proving installation of the embodiment of the invention.As shown in the figure, the magnetization augmented injection step-down proving installation of the embodiment of the invention comprises:
Fig. 2 is the another kind of structural representation of the magnetization augmented injection step-down proving installation of the embodiment of the invention, as shown in the figure:
Device for magnetic treatment is made up of transformer 6 and magnetic processor 5, changes the magnitude of field intensity of described magnetic processor 5 by the voltage swing that changes described transformer 6.Described transformer 6 also comprises voltage display panel 13, is used to show the voltage value of described transformer 6.
In the present embodiment, 15 among Fig. 2,16,17,18 is valve.Wherein valve 15 is the draining valve of intermediate receptacle 3, is used for the liquid in the emptying intermediate receptacle 3; Valve 16 is the emptying valve of intermediate receptacle 3, is used for the air in the emptying intermediate receptacle 3.Valve 17 is a blowdown valve, and end to be tested is laid down ring additional on the core holding unit 7 and pressed.Valve 18 is the draining switch of core holding unit 7 endpiece, can intercept the flow of fluid according to test request.
Fig. 3 is the sectional view of the magnetic processor 5 of the embodiment of the invention.As shown in the figure, magnetic processor 5 is made up of coil 20, auxiliary rod 24, shell 19, dividing plate 21 and inwall 23.Magnetic processor shell 19, inwall 23 and dividing plate 21 are non-magnetic conductive material, coil 20 is wound on the auxiliary rod 24, and the coil winding direction is consistent, and guarantees the direction consistance in the magnetic field that every group of coil provides, for the fluid by described magnetic processor 5 provides uniform magnetic field.Auxiliary rod 24 is welded between outer wall 23 and the dividing plate 2, also is provided with liquid line passage 22 in the magnetic processor 5, makes the liquid of the magnetic processor 5 of flowing through be subjected to magnetizing preferably.Circuit path 25 can be wound on the auxiliary rod 24 of lower floor coil 20 for coil 20 in the magnetic processor 5 provides a passage swimmingly by upper strata the most last auxiliary excellent 24.Thereby can change the magnitude of field intensity that voltage swing changes magnetic processor 5 by transformer 6.
The test process of the magnetization augmented injection step-down proving installation of the embodiment of the invention is as follows:
At first setup test rock core, and washing oil, oven dry, saturated; Ready testing rock core is put into core holding unit 7, and assemble core holding unit 7; To test water is positioned in the intermediate receptacle 3; Air compressor machine 1, pump 2, intermediate receptacle 3, six-way valve 4, core holding unit 7, test tube 9 are connected in turn, when six-way valve 4 connects core holding unit 7, pipeline passes from magnetic processor 5, is connected with six-way valve 4 between described intermediate receptacle 3 and the described magnetic processor 5.Transformer 6 connects power supply, is connected to magnetic processor 5, and ring presses valve 8 to be connected to core holding unit 7, and for testing rock core provides the ring pressure, vacuum meter 11 presses valve 8 to link to each other with ring, shows ring pressure numerical value.Wherein intermediate receptacle 3, six-way valve 4, magnetic processor 5, core holding unit 7, test tube 9 all are positioned in the constant temperature oven 10.
Open air compressor machine 1 and provide enough power, start pump 2, flow velocity or pressure are set by display panel 12 on the pump on the pump 2 for pump 2, transformer 6 energized, and voltage is set makes core holding unit 7 inlet end pipelines pass magnetic processor 5.Testing rock core is put into core holding unit 7, and the test water is put into intermediate receptacle 3, sets displacement flow velocity or displacement pressure by pump 2, press valve 8 to add confined pressure by ring for testing rock core, by constant temperature oven 10 design temperatures, set magnetic field intensity by magnetic processor 5, carry out the displacement test.Treat that the force value on the data presentation panel 14 on the constant temperature oven 10 no longer changes, can think that displacement process reaches steady state (SS), record temperature, pressure, flow velocity at this moment.
Embodiment one: the constant flow displacement.
Testing rock core is put into core holding unit 7, and test displacement water is positioned in the intermediate receptacle 3, utilizes check valve 8 to add ring to rock core and presses, and adjusts transformer 6, selectes the magnetic field size of magnetic processor 5, sets the temperature of constant temperature oven 10.Operation air compressor machine 1 provides certain power for pump 2, pump 2 operations, set the fluid flow size by pump 2, with constant flow velocity with liquid transfer to intermediate receptacle 3, test displacement water in the intermediate receptacle 3 flowed through to be depressed in the core holding unit 7 behind the magnetic processor 5, and at this moment, display panel 12 can show the flow rate of liquid sizes on the pump of pump 2, data presentation panel 13 on the transformer 6 can provide current magnitude of voltage, and the data presentation panel of constant temperature oven 10 can current temperature and the pressure of 14 demonstrations.In the force value certain hour of the data presentation panel 14 of constant temperature oven 10, no longer change, can think that displacement process reaches steady state (SS).
Embodiment two: the level pressure displacement.
Testing rock core is put into core holding unit 7, and test displacement water is positioned in the intermediate receptacle 3, utilizes ring pressure valve 8 to add ring to testing rock core and presses, and adjusts transformer 6, the magnetic field size of selected magnetic processor 5, the temperature of setting constant temperature oven 10.Operation air compressor machine 1 provides certain power for pump 2, pump 2 operations, set the displacement pressure size by pump 2, with constant compression force liquid is depressed into intermediate receptacle 3, test displacement water in the intermediate receptacle 3 flowed through be depressed in the core holding unit 7 behind the magnetic processor 5, at this moment, voltage display panel 13 on the transformer 6 can provide current magnitude of voltage, the data presentation panel meeting 14 of constant temperature oven 10 shows current temperature and pressure, after displacement is stable, measure, calculate its flow velocity with flowmeter method or weight method.
The magnetization augmented injection step-down proving installation of the embodiment of the invention has the following advantages:
1) magnitude of field intensity scalable.Magnetic processor can change voltage swing by transformer, thereby realize the change of magnitude of field intensity, compare with magnetizing that adjustable magnetic processor is convenient, quick with permanent magnet, need not to change constantly the permanent magnet of different magnetic field intensity, saved experimental facilities.
2) drive unit is easy to operate, can accurately control flow velocity or driving pressure, has reduced experimental error.
3) snubber assembly practicality, easy prevents from the pump housing is caused corrosion or infringement.
4) thermostat can accurately be controlled temperature, and can change pressure transducer according to test displacement pressure size, reduces experimental error as much as possible.
5) flow device adopts the core holding unit of convenient disassembly, can make things convenient for, change easily, apace testing rock core, and it is very convenient to operate, and leakproofness is very good.
Therefore, the magnetization augmented injection step-down proving installation of the embodiment of the invention can test out core permeability and pressure gradient under different magnetic field intensity, the different temperatures convenient, fast, exactly, can be used for studying low-permeability oil deposit magnetization augmented injection step-down mechanism, instruct the oil field rig-site utilization, improve the oil recovery factor of low permeability oil field.
Above-described specific embodiment; purpose of the present invention, technical scheme and beneficial effect are further described; institute is understood that; the above only is specific embodiments of the invention; and be not intended to limit the scope of the invention; within the spirit and principles in the present invention all, any modification of being made, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. one kind magnetizes augmented injection step-down test macro, it is characterized in that described test macro comprises:
Flow device is used to place testing rock core, and presses for described testing rock core provides ring;
Drive unit is used for providing different displacement pressure or flow rate of liquid to described testing rock core;
Snubber assembly is used to deposit the test water, and described drive unit drives described test water to described rock core;
Device for magnetic treatment is used for providing different magnetic field intensitys to described testing rock core;
Thermostat is used for providing steady temperature to described testing rock core;
Described drive unit is set displacement pressure or flow rate of liquid, drives test water in the described snubber assembly and flows through and be depressed into testing rock core in the described flow device behind the described device for magnetic treatment; Described thermostat provides steady temperature for described snubber assembly, device for magnetic treatment and flow device.
2. magnetization augmented injection step-down test macro as claimed in claim 1 is characterized in that described flow device comprises:
Core holding unit is used to place described testing rock core;
Ring is pressed valve, is used to described testing rock core to provide ring to press;
Vacuum meter is used to show that described ring pressure valve is added in the ring pressure size on the described testing rock core.
3. magnetization augmented injection step-down test macro as claimed in claim 1 is characterized in that described drive unit comprises:
Pump is used for providing different displacement pressure or flow rate of liquid to described testing rock core;
Air compressor machine is used to described pump that power is provided, and guarantees that described pump runs well;
Display panel on the pump is used to show the size of the flow rate of liquid or the displacement pressure of described pump.
4. magnetization augmented injection step-down test macro as claimed in claim 2 is characterized in that described thermostat comprises:
Temperature regulator is used to described testing rock core that stationary temperature is provided;
Pressure transducer is used to monitor the pressure size that described core holding unit enters the mouth;
The data presentation panel is used to show the pressure value that Temperature numerical that described temperature regulator provides and described pressure transducer transmit.
5. magnetization augmented injection step-down test macro as claimed in claim 1 is characterized in that described device for magnetic treatment comprises transformer and magnetic processor, changes the magnitude of field intensity of described magnetic processor by the voltage swing that changes described transformer.
6. magnetization augmented injection step-down test macro as claimed in claim 5 is characterized in that described transformer also comprises the voltage display panel, is used to show the voltage value of described transformer.
7. magnetization augmented injection step-down test macro as claimed in claim 5 is characterized in that, described magnetic processor comprises coil, auxiliary rod, shell, dividing plate and inwall, and the shell of wherein said magnetic processor, inwall and dividing plate are non-magnet material.
8. magnetization augmented injection step-down test macro as claimed in claim 7, it is characterized in that, the coil of described magnetic processor is wound on the described auxiliary rod, and the coil winding direction is consistent, guarantee the direction consistance in the magnetic field that every group of coil provides, for the fluid by described magnetic processor provides uniform magnetic field.
9. magnetization augmented injection step-down test macro as claimed in claim 7 is characterized in that described magnetic processor also is provided with the liquid line passage, makes the liquid of the magnetic processor of flowing through be subjected to magnetizing preferably.
10. magnetization augmented injection step-down test macro as claimed in claim 1 is characterized in that, is connected with six-way valve between described snubber assembly and the described device for magnetic treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010601953A CN102141501B (en) | 2010-12-22 | 2010-12-22 | Magnetization injection increasing and pressure reducing test system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010601953A CN102141501B (en) | 2010-12-22 | 2010-12-22 | Magnetization injection increasing and pressure reducing test system |
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| Publication Number | Publication Date |
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| CN102141501A true CN102141501A (en) | 2011-08-03 |
| CN102141501B CN102141501B (en) | 2012-10-03 |
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| CN201010601953A Active CN102141501B (en) | 2010-12-22 | 2010-12-22 | Magnetization injection increasing and pressure reducing test system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102507626A (en) * | 2011-10-10 | 2012-06-20 | 北京大学 | Rock core holder compatible with nuclear magnetic resonance |
| CN107356632A (en) * | 2017-08-18 | 2017-11-17 | 北京石油化工学院 | The experimental provision that externally-applied magnetic field influences on premixed gas explosive characteristic |
| CN107630687A (en) * | 2017-09-05 | 2018-01-26 | 中国石油大学(北京) | A kind of fine and close flow of oil pulse displacement system |
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|---|---|---|---|---|
| WO2002073166A1 (en) * | 2001-03-13 | 2002-09-19 | Schlumberger Technology B.V. | Process and device for assessing the permeability of a rock medium |
| CN101705811A (en) * | 2009-10-12 | 2010-05-12 | 西安中孚凯宏石油科技有限责任公司 | Chemical pressure decreasing and augmented injection technology for strong sensitivity oil layer water injection well |
| CN201610749U (en) * | 2009-11-20 | 2010-10-20 | 李建华 | Frequency-variable electromagnetic injection stimulation device for water injection well in oil field |
-
2010
- 2010-12-22 CN CN201010601953A patent/CN102141501B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002073166A1 (en) * | 2001-03-13 | 2002-09-19 | Schlumberger Technology B.V. | Process and device for assessing the permeability of a rock medium |
| CN101705811A (en) * | 2009-10-12 | 2010-05-12 | 西安中孚凯宏石油科技有限责任公司 | Chemical pressure decreasing and augmented injection technology for strong sensitivity oil layer water injection well |
| CN201610749U (en) * | 2009-11-20 | 2010-10-20 | 李建华 | Frequency-variable electromagnetic injection stimulation device for water injection well in oil field |
Non-Patent Citations (1)
| Title |
|---|
| 《辽宁工程技术大学学报（自然科学版）》 20080430 赵振保 《磁化水的理化特性及其煤层注水增注机制》 第192-194页 1-10 第27卷, 第2期 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102507626A (en) * | 2011-10-10 | 2012-06-20 | 北京大学 | Rock core holder compatible with nuclear magnetic resonance |
| CN107356632A (en) * | 2017-08-18 | 2017-11-17 | 北京石油化工学院 | The experimental provision that externally-applied magnetic field influences on premixed gas explosive characteristic |
| CN107630687A (en) * | 2017-09-05 | 2018-01-26 | 中国石油大学(北京) | A kind of fine and close flow of oil pulse displacement system |
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| Publication number | Publication date |
|---|---|
| CN102141501B (en) | 2012-10-03 |
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