CN102536180B - Method and device for preventing sediment and scale substances from entering into rock core - Google Patents
Method and device for preventing sediment and scale substances from entering into rock core Download PDFInfo
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- CN102536180B CN102536180B CN201110308344.5A CN201110308344A CN102536180B CN 102536180 B CN102536180 B CN 102536180B CN 201110308344 A CN201110308344 A CN 201110308344A CN 102536180 B CN102536180 B CN 102536180B
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Abstract
The invention relates to a device for preventing sediment and scale substances from entering into a rock core. The problems of the present oil-displacing device that experimental water or oil-displacing agent is settled in an intermediate container and the rock core is plugged by the scale substances are solved. The device is characterized in that an emptying pipe (2) and an oil-displacing pipe (3) are connected with the bottom of the intermediate container (1); a filtering film (4) is wrapped on an end part of the oil-displacing pipe (3) located at one end of the intermediate container (1); a rock core clamper (10) is connected with the other end of the oil-displacing pipe (3); and the upper end of the intermediate container (1) is connected with an advection pump. The device is simple in structure, is convenient in use and is used for efficiently preventing sediment and scale substances from entering into the rock core.
Description
Technical field
The present invention relates to the indoor physical simulation oil displacement experiment field in petroleum industry, be a kind ofly specifically applicable to the indoor anti-precipitation of oil displacement experiment of tertiary oil recovery and the method for scale substances from entering into rock core and device thereof.
Background technology
In petroleum industry, tertiary oil recovery indoor physical simulation oil displacement experiment plays an important role at oil field field test early stage.The indoor oil displacement experiment cycle is longer, general at 3-5 days, in physical simulation flooding test device for containing experimental water (high-salinity brine or on-the-spot sewage) or oil displacement agent (is insoluble to the oil displacement agent of aviation kerosine, as polymer etc.) intermediate receptacle easily occur some precipitation and foulant, be attached to bottom intermediate receptacle.When experimental water or oil displacement agent flow out from container bottom, precipitation is along with outflow enters in rock core together with foulant, and affect rock core permeability, serious meeting causes core plugging.
At present, in oil exploitation, the method for the anti-precipitation of known flooding apparatus and scale substances from entering into rock core mainly prevents intermediate receptacle burn into from getting rusty, typically use stainless steel, part is also had to be brush corrosion-inhibiting coating at inwall, this way can effectively prevent the corrosion of intermediate receptacle and get rusty, but the precipitation that the solution in use in container itself produces and fouling cannot stop, therefore, core plugging phenomenon is also very serious, at present also not used for improving use for laboratory water and oil displacement agent itself precipitates and fouling enters method and the device thereof of rock core.
Summary of the invention
In order to overcome experimental water or oil displacement agent in existing flooding apparatus precipitate in intermediate receptacle and foulant blocking rock core deficiency, the invention provides method and the device thereof of a kind of anti-precipitation and scale substances from entering into rock core, this apparatus structure is simple, easy to use, adopts this device effectively can avoid precipitation and scale substances from entering into rock core.
Technical scheme of the present invention is: the device of a kind of anti-precipitation and scale substances from entering into rock core, comprise intermediate receptacle, the sandwiched device of rock core, described intermediate receptacle top is kerosene, bottom is experimental water or oil displacement agent, blow-down pipe and displacement of reservoir oil pipeline is connected with bottom described intermediate receptacle, the end that described displacement of reservoir oil pipeline is positioned at intermediate receptacle one end is enclosed with filter membrane, the other end of displacement of reservoir oil pipeline connects the sandwiched device of rock core, and described intermediate receptacle upper end is connected with constant-flux pump.
The height of described displacement of reservoir oil pipeline upper end is higher than fouling and sedimentary height.
A kind of method applying the device of above-mentioned anti-precipitation and scale substances from entering into rock core, comprise the following steps: in intermediate receptacle, load experimental water or oil displacement agent, in intermediate receptacle, aviation kerosine is pumped into constant-flux pump, when the aviation kerosine amount of pumping into fills up intermediate receptacle, experimental water or oil displacement agent enter displacement of reservoir oil pipeline through filter membrane, finally enter the sandwiched device of rock core and carry out the displacement of reservoir oil, and precipitation and foulant are filtered membrane filtration and stay in intermediate receptacle.
The present invention has following beneficial effect: owing to taking such scheme, displacement of reservoir oil pipeline bottom intermediate receptacle wraps up filter membrane, precipitation in experimental water or oil displacement agent and foulant can filter out by filter membrane, avoid the permeability and the blocking rock core that affect rock core, and structure is simple, cost is low, can original flooding apparatus improve.
Accompanying drawing illustrates:
Fig. 1 is schematic diagram of the present invention.
1-intermediate receptacle in figure, 2-blow-down pipe, 3-displacement of reservoir oil pipeline, 4-filter membrane, 5-kerosene, 6-experimental water or oil displacement agent, 7-precipitation and foulant, 8-valve A, 9-valve B, the sandwiched device of 10-rock core, 11-constant-flux pump.
Detailed description of the invention:
Below in conjunction with accompanying drawing, the invention will be further described:
As shown in Figure 1, the device of a kind of anti-precipitation and scale substances from entering into rock core, comprise intermediate receptacle 1, the sandwiched device 10 of rock core, described intermediate receptacle 1 top is kerosene 5, bottom is experimental water or oil displacement agent 6, blow-down pipe 2 and displacement of reservoir oil pipeline 3 is connected with bottom described intermediate receptacle 1, the material of blow-down pipe 2 and displacement of reservoir oil pipeline 3 can be stainless steel or polytetrafluoroethylene (PTFE) etc., and caliber can be F2mm, F3mm, F4mm, F6mm etc., requires to select caliber and material according to specific experiment.Blow-down pipe 2 is closed when testing, and can open blow-down pipe 2 and precipitation residual in intermediate receptacle 1 and foulant and remaining liquid be discharged after experiment terminates.The end that displacement of reservoir oil pipeline 3 is positioned at intermediate receptacle 1 one end is enclosed with filter membrane 4, filter membrane 4 can be pottery, cementing quartz sand or polytetrafluoroethylene (PTFE) etc., the aperture of filter membrane 4 can be 500mm, 100mm, 10mm, 5mm, 1mm, 0.5mm etc., selects filter membrane material and aperture row according to specifically filtering out sedimentary size and experiment condition.The height of displacement of reservoir oil pipeline 3 upper end, higher than regulating as required, is generally higher than the height that fouling and sediment 7 can reach, and can avoid precipitation and foulant blocking filter membrane.The other end of displacement of reservoir oil pipeline 3 connects the sandwiched device 10 of rock core, and be provided with valve A8, valve B9 between displacement of reservoir oil pipeline 3 and the sandwiched device 10 of rock core, described intermediate receptacle 1 upper end is connected with constant-flux pump 11, pumps into aviation kerosine 5 by constant-flux pump 11 in intermediate receptacle 1.
A kind of method applying the device of above-mentioned anti-precipitation and scale substances from entering into rock core, comprise the following steps: first in intermediate receptacle 1, load experimental water or oil displacement agent 6, wherein experimental water can be high-salinity brine or on-the-spot sewage, oil displacement agent is the oil displacement agent being insoluble to aviation kerosine, as polymer etc., then in intermediate receptacle 1, aviation kerosine 5 is pumped into constant-flux pump 11, because kerosene density is less than the density of experimental water or oil displacement agent, therefore, aviation kerosine 5 on top experimental water or oil displacement agent 6 in bottom.When aviation kerosine 5 amount of pumping into fills up intermediate receptacle 1, open valve A8, valve B9, experimental water or oil displacement agent 6 enter displacement of reservoir oil pipeline 3 through filter membrane 4, and experimental water or oil displacement agent 6 finally enter the sandwiched device 10 of rock core and carry out the displacement of reservoir oil.Because the oil displacement experiment duration is longer, and contain high-salinity brine or on-the-spot sewage in experimental water and oil displacement agent, precipitation and foulant 7 can be produced bottom intermediate receptacle 1, if be connected with the sandwiched device 10 of pipeline 2 and rock core, precipitation and foulant 7 can enter the sandwiched device 10 of rock core along pipeline 2, make core plugging, and the present invention adopts the sandwiched device 10 of displacement of reservoir oil pipeline 3 and rock core to be connected, and there is filter membrane 4 displacement of reservoir oil pipeline 3 end, therefore precipitation and foulant 7 be filtered film 4 filter stay in intermediate receptacle 1, therefore can not affect rock core permeability and blocking rock core.
Structure of the present invention is simple, and can original flooding apparatus improve, experiment effect is good, and wherein filter membrane rear recycling capable of washing, cost is low.
Claims (2)
1. the device of an anti-precipitation and scale substances from entering into rock core, comprise intermediate receptacle (1), the sandwiched device of rock core (10), described intermediate receptacle (1) top is kerosene (5), bottom is experimental water or oil displacement agent (6), it is characterized in that: described intermediate receptacle (1) bottom is connected with blow-down pipe (2) and displacement of reservoir oil pipeline (3), the end that described displacement of reservoir oil pipeline (3) is positioned at intermediate receptacle (1) one end is enclosed with filter membrane (4), the other end of displacement of reservoir oil pipeline (3) connects the sandwiched device of rock core (10), described intermediate receptacle (1) upper end is connected with constant-flux pump (11), the height of described displacement of reservoir oil pipeline (3) upper end is higher than the height of fouling and sediment (7), described filter membrane (4) is pottery, one in cementing quartz sand or polytetrafluoroethylene (PTFE).
2. the method for the device of anti-precipitation and scale substances from entering into rock core described in an application rights requirement 1, it is characterized in that: in intermediate receptacle (1), load experimental water or oil displacement agent (6), in intermediate receptacle (1), aviation kerosine (5) is pumped into constant-flux pump (11), when aviation kerosine (5) amount of pumping into fills up intermediate receptacle (1), experimental water or oil displacement agent (6) enter displacement of reservoir oil pipeline (3) through filter membrane (4), finally enter the sandwiched device of rock core (10) and carry out the displacement of reservoir oil, and precipitation and foulant (7) be filtered film (4) filter stay in intermediate receptacle (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110308344.5A CN102536180B (en) | 2011-10-13 | 2011-10-13 | Method and device for preventing sediment and scale substances from entering into rock core |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110308344.5A CN102536180B (en) | 2011-10-13 | 2011-10-13 | Method and device for preventing sediment and scale substances from entering into rock core |
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| Publication Number | Publication Date |
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| CN102536180A CN102536180A (en) | 2012-07-04 |
| CN102536180B true CN102536180B (en) | 2015-01-21 |
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| CN201110308344.5A Active CN102536180B (en) | 2011-10-13 | 2011-10-13 | Method and device for preventing sediment and scale substances from entering into rock core |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103410461B (en) * | 2013-08-22 | 2015-10-28 | 永贵能源开发有限责任公司 | A kind of three anti-devices of drilling in process |
| CN105298457B (en) * | 2014-07-09 | 2018-07-03 | 中国石油化工股份有限公司 | Displacement of reservoir oil viscoelastic particle oil displacement agent and the matched analysis method of formation pore throat |
Citations (4)
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|---|---|---|---|---|
| CN2584826Y (en) * | 2002-11-11 | 2003-11-05 | 大庆油田有限责任公司 | Gel high-pressure thermostat flow instrument |
| CN201057034Y (en) * | 2007-06-01 | 2008-05-07 | 徐金祥 | Mouth sleeve with filter |
| CN101967967A (en) * | 2010-09-27 | 2011-02-09 | 中国石油大学(华东) | Artificially resonant wave strengthened oil displacement dynamic simulation experimental device and experimental method |
| CN201786355U (en) * | 2010-09-16 | 2011-04-06 | 中国海洋石油总公司 | Selective chemical plugging simulating device for gravel packed well |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6358422B1 (en) * | 1998-05-14 | 2002-03-19 | Amcol International Corporation | Method and apparatus for removing oil from water including monitoring of absorbent saturation |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2584826Y (en) * | 2002-11-11 | 2003-11-05 | 大庆油田有限责任公司 | Gel high-pressure thermostat flow instrument |
| CN201057034Y (en) * | 2007-06-01 | 2008-05-07 | 徐金祥 | Mouth sleeve with filter |
| CN201786355U (en) * | 2010-09-16 | 2011-04-06 | 中国海洋石油总公司 | Selective chemical plugging simulating device for gravel packed well |
| CN101967967A (en) * | 2010-09-27 | 2011-02-09 | 中国石油大学(华东) | Artificially resonant wave strengthened oil displacement dynamic simulation experimental device and experimental method |
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| CN102536180A (en) | 2012-07-04 |
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