CN204731222U - A kind of indoor experimental apparatus evaluated oil well cleanup and pollute - Google Patents
A kind of indoor experimental apparatus evaluated oil well cleanup and pollute Download PDFInfo
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- CN204731222U CN204731222U CN201520366207.0U CN201520366207U CN204731222U CN 204731222 U CN204731222 U CN 204731222U CN 201520366207 U CN201520366207 U CN 201520366207U CN 204731222 U CN204731222 U CN 204731222U
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Abstract
The utility model relates to a kind of indoor experimental apparatus evaluated oil well cleanup and pollute in oil and gas development device technique field, comprise L-type core holding unit, described L-type core holding unit one end is provided with toroidal container, the other end is provided with rock core, described toroidal container inlet end is connected with and drives latent system, the endpiece of described rock core is communicated with back pressure system one and measuring apparatus successively, the periphery of described L-type core holding unit is communicated with confined pressure cover, described confined pressure cover is communicated with automatic confined pressure tracker, and the annular space outlet end of described toroidal container is communicated with back pressure system two.The indoor experimental apparatus that evaluation oil well cleanup of the present utility model pollutes can simulate working fluid fluid under condition of formation pressure, in positive well-flushing or anti-flushing well process, the pollution condition of formation rock core and preventing polluting effect, can pollute and preventing polluting effect by effectively evaluating oil well cleanup more directly perceived.
Description
Technical field
The utility model relates to oil and gas development device technique field, particularly a kind of indoor experimental apparatus evaluated oil well cleanup and pollute.
Background technology
Commonly use for the oil well such as well-flushing, operation the injury that maintenance work formation causes, each oil field has been carried out based on working fluid performance optimization, working method and parameter optimization thereof, shielding multinomial reservoir protection technology stifled temporarily for problems such as formation damages in operation process.But reservoir injury many factors in routine work process, comprise that solid invasion, water-sensitive, salt are quick, the blocking of water lock, wettability reversal, emulsion fluid, inorganic scale blocking and organic deposition blocking etc., reason is very complicated; Simultaneously, different Oil Reservoir Types, the different hydrocarbon zone of even same oil reservoir, all there is very large difference in its lithology and fluid properties, the reason of reservoir injury is caused also just to be not quite similar, the means of prevention in different injury source can not be lumped together, and therefore oil well cleanup and routine work pollution prevention technology also need to further investigate targetedly.
Oil well cleanup and routine work pollution evaluation are reservoir injury factor analyses, the important leverage of pollution prevention technology research, it is the key point carrying out the preventing and controlling of specific aim formation damage, the method that current oil field flushing pollution evaluation is commonly used is conventional core flooding test device, this kind of experimental technique can only the permeability injury situation of simple evaluation entry well fluid formation rock core, can not simulate at formation temperature, reservoir pressure, just washing or the pollution of entry well fluid formation rock core and anti-pollution situation in backwash condition well-sinking, cause the inconsistent of evaluation test result and on-the-spot actual result, thus have impact on the effect of oil well cleanup pollution prevention technology evaluation.
Utility model content
The utility model is for existing oil well conventional well-flushing pollution evaluation device Problems existing, a kind of indoor experimental apparatus evaluated oil well cleanup and pollute is provided, to simulate working fluid fluid at formation temperature and condition of formation pressure, the pollution condition of formation rock core in accurate evaluation washing well process.
The purpose of this utility model realizes like this, a kind of indoor experimental apparatus evaluated oil well cleanup and pollute, comprise L-type core holding unit, described L-type core holding unit one end is provided with toroidal container, the other end is provided with rock core, described toroidal container inlet end is connected with and drives latent system, the endpiece of described rock core is communicated with back pressure system one and measuring apparatus successively, the periphery of described L-type core holding unit is communicated with confined pressure cover, described confined pressure cover is communicated with automatic confined pressure tracker, and the annular space outlet end of described toroidal container is communicated with back pressure system two.
In the L-type core holding unit of this experimental provision, toroidal container is equivalent to the pit shaft of oil well; The rock core be connected with toroidal container side direction is used for the part rock stratum of simulated formation pit shaft periphery; Drive latent system for driving latent flushing fluid to annular space container with certain pressure and note discharge capacity forward or reaction, confined pressure cover and automatic confined pressure tracker are used for the reservoir pressure of wellbore hole simulator periphery, measuring apparatus is for measuring the wastage of flushing fluid in formation core, and back pressure system one and back pressure system two are respectively used to wellbore hole simulator back pressure and stratum back pressure state.Therefore the indoor experimental apparatus that evaluation oil well cleanup of the present utility model pollutes can simulate working fluid fluid under condition of formation pressure, in positive well-flushing or anti-flushing well process, the pollution condition of formation rock core and preventing polluting effect, can pollute and preventing polluting effect by effectively evaluating oil well cleanup more directly perceived.
For preventing the dirt in flushing fluid outstanding heavy in device, bottom the L corner of described L-type core holding unit, be provided with magnetic stirring apparatus.
For ease of simulation downhole temperature, the housing periphery of described L core holding unit is provided with heating arrangement, and described heating arrangement controls heating by temperature control system.
For ease of accurately controlling injection pressure and the flow of working fluid, described in drive latent system and comprise twin-tub injection pump, intermediate receptacle and data acquisition system (DAS).
Accompanying drawing explanation
Fig. 1 is the indoor experimental apparatus schematic diagram that evaluation oil well cleanup of the present utility model pollutes.
Wherein, 1 latent system is driven; 101 twin-tub injection pumps; 102 data acquisition system (DAS)s; 103 intermediate receptacles; 2 L-type core holding units; 201 toroidal containers; 202 rock cores; 203 heating arrangements; 204 stirrers; 3 back pressure system two; 4 automatic confined pressure trackers; 5 back pressure system one; 6 measuring apparatus.
Embodiment
Be illustrated in figure 1 the indoor experimental apparatus that evaluation oil well cleanup of the present utility model pollutes, comprise L-type core holding unit 2, L-type core holding unit 2 one end is provided with toroidal container 201, the other end is provided with rock core 202, toroidal container 201 inlet end is connected with and drives latent system 1, the endpiece of rock core 202 is communicated with back pressure system 1 and measuring apparatus 6 successively, the periphery of L-type core holding unit 2 is communicated with confined pressure cover, confined pressure cover is communicated with automatic confined pressure tracker 4, and the annular space outlet end of toroidal container 201 is communicated with back pressure system 23; For preventing the dirt in flushing fluid outstanding heavy in device, bottom the L corner of L-type core holding unit 2, be provided with magnetic stirring apparatus 204; For ease of simulation downhole temperature, the housing periphery of L core holding unit 2 is provided with heating arrangement 203, and heating arrangement 203 controls heating by temperature control system; For ease of accurately controlling injection pressure and the flow of working fluid, driving latent system 1 and comprising twin-tub injection pump 101, intermediate receptacle 103 and data acquisition system (DAS) 102.
During device work of the present utility model, the working fluid prepared is joined in toroidal container 201, start magnetic stirring apparatus 204, open heating arrangement 203, be heated to experimental design temperature, automatic confined pressure tracker 4 is started working, open back pressure system 1 and back pressure system 24, open twin-tub injection pump 101, data acquisition system (DAS) 102, setting experimental design pressure or discharge capacity carry out displacement, read the filter loss in outlet end measuring apparatus 6.After experiment terminates, close heating arrangement 6, magnetic stirring apparatus 204 and drive latent system 1, after L-type core holding unit 2 cools, taking off rock core 202, observing rock core 202 end face filter cake, and record its thickness.Therefore, the indoor experimental apparatus that evaluation oil well cleanup of the present utility model pollutes can simulate working fluid fluid under condition of formation pressure, in positive well-flushing or anti-flushing well process, the pollution condition of formation rock core and preventing polluting effect, can pollute and preventing polluting effect by effectively evaluating oil well cleanup more directly perceived.
Claims (4)
1. the indoor experimental apparatus evaluated oil well cleanup and pollute, it is characterized in that, comprise L-type core holding unit, described L-type core holding unit one end is provided with toroidal container, the other end is provided with rock core, described toroidal container inlet end is connected with and drives latent system, the endpiece of described rock core is communicated with back pressure system one and measuring apparatus successively, the periphery of described L-type core holding unit is communicated with confined pressure cover, described confined pressure cover is communicated with automatic confined pressure tracker, and the annular space outlet end of described toroidal container is communicated with back pressure system two.
2. the indoor experimental apparatus of evaluation oil well cleanup pollution according to claim 1, is characterized in that, be provided with magnetic stirring apparatus bottom the L corner of described L-type core holding unit.
3. the indoor experimental apparatus of evaluation oil well cleanup pollution according to claim 1, it is characterized in that, the housing periphery of described L-type core holding unit is provided with heating arrangement, and described heating arrangement controls heating by temperature control system.
4. the indoor experimental apparatus that pollutes of evaluation oil well cleanup according to claim 1, is characterized in that, described in drive latent system and comprise twin-tub injection pump, intermediate receptacle and data acquisition system (DAS).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520366207.0U CN204731222U (en) | 2015-06-01 | 2015-06-01 | A kind of indoor experimental apparatus evaluated oil well cleanup and pollute |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201520366207.0U CN204731222U (en) | 2015-06-01 | 2015-06-01 | A kind of indoor experimental apparatus evaluated oil well cleanup and pollute |
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| CN204731222U true CN204731222U (en) | 2015-10-28 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105424896A (en) * | 2016-01-01 | 2016-03-23 | 东北石油大学 | Device for simulating carbon dioxide long-distance foam flooding of actual mine field |
| CN107290139A (en) * | 2017-06-01 | 2017-10-24 | 中国石油集团渤海钻探工程有限公司 | A kind of experimental rig for being used to detect high-pressure rotary well-flushing instrument |
| CN111595733A (en) * | 2019-02-21 | 2020-08-28 | 中国石油化工股份有限公司 | Oil reservoir liquid hydrocarbon micro-leakage simulation experiment system |
-
2015
- 2015-06-01 CN CN201520366207.0U patent/CN204731222U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105424896A (en) * | 2016-01-01 | 2016-03-23 | 东北石油大学 | Device for simulating carbon dioxide long-distance foam flooding of actual mine field |
| CN107290139A (en) * | 2017-06-01 | 2017-10-24 | 中国石油集团渤海钻探工程有限公司 | A kind of experimental rig for being used to detect high-pressure rotary well-flushing instrument |
| CN107290139B (en) * | 2017-06-01 | 2019-02-15 | 中国石油集团渤海钻探工程有限公司 | It is a kind of for detecting the experimental rig of high-pressure rotary well-flushing tool |
| CN111595733A (en) * | 2019-02-21 | 2020-08-28 | 中国石油化工股份有限公司 | Oil reservoir liquid hydrocarbon micro-leakage simulation experiment system |
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