CN2771856Y - Analogue monitoring device for oily saturation field - Google Patents
Analogue monitoring device for oily saturation field Download PDFInfo
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- CN2771856Y CN2771856Y CN 200520000431 CN200520000431U CN2771856Y CN 2771856 Y CN2771856 Y CN 2771856Y CN 200520000431 CN200520000431 CN 200520000431 CN 200520000431 U CN200520000431 U CN 200520000431U CN 2771856 Y CN2771856 Y CN 2771856Y
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Abstract
The utility model relates to an oil saturation field monitoring method used in patent oil reservoir laboratory simulation, which belongs to the rock physical field and firstly utilizes an electric method to measure the distribution of oil saturation fields. The utility model measures potential difference by developing gradient electrode system probes, and the potential difference reflects the variation of formation electric resistivity. The quantitive relationship between measured media and measuring resistors is determined through the calibration of electrodes. The Archie formula is utilized to calculate the formation water saturation. With a certain number of electrode probes arranged in a model, the variation of oil saturation in the water oil displacement process can be monitored in a real-time mode, and the isopleth map of oil saturation can be made. Molds are utilized to make the electrode probes, and the temperature performance, the detection range, the dynamic range, the sensitivity, the consistency, the stability, the insulating property, the mechanical property, etc. of the probes are actual investigated. The utility model is suitable for monitoring the distribution of oil saturation fields in artificial accumulation models. As a result, the error of a calculated saturation is smaller than 3%.
Description
Technical field
The utility model relates to geophysics and reservoir engineering field, is applicable to the distribution of monitoring oil saturation field in the oil reservoir laboratory simulation.
Background technology
For the variation of oil saturation on stream of simulated oil gas reservoir, particularly in tertiary oil recovery, need in the laboratory, carry out the simulation of oil-gas mining process under the formation condition and the monitoring of residue oil gas.Distributed with the profit in the little rock core of CT scan commercial measurement, to (how 1000 * 1000mm) monitor the variation of oil saturation in the displacement process in real time, is the unsolved problem of reservoir engineering in the large-sized model always in the past.
Summary of the invention
The purpose of this utility model just provides the analog monitoring device of a kind of oil saturation field, to satisfy monitoring the requirement that oil saturation changes in the displacement process in the large-sized model in real time.
The technical solution of the utility model is: comprise sand-packed model, fluid displacement system and automated collection systems, described fluid displacement system is connected with sand-packed model;
Described sand-packed model comprise upper cover plate, model groove, sands insertion into layer model and, the sands insertion into layer model is filled in the model groove, cover closure is suitable for reading the model groove;
Described automated collection systems comprises: electrode probe, pressure cap and rubber seal, pressure probe, array multi pass acquisition device, digital electric bridge and computing machine, electrode probe and pressure transducer insert from the bottom surface of described sand-packed model, and fix by pressure cap and rubber seal, electrode probe is connected by the input end of lead with array multi pass acquisition device with pressure transducer, and the latter's output terminal is connected with computing machine by digital electric bridge.
Described electrode probe comprises four electrode retaining collars, basic bar and electrode contact, and four electrode retaining collars are nested on the basic bar of insulation at interval, and electrode contact is connected an end of described basic bar.
Described fluid displacement system comprises: constant-flux pump, fluid tank, vacuum pump and oil and water separation metering device, constant-flux pump is connected with the bottom of described sand-packed model by pipeline with fluid tank, vacuum pump is connected with the upper end of described sand-packed model by pipeline with oil and water separation metering device, all is in series with valve on each above-mentioned connecting tube; The control end of described oil and water separation metering device is connected with the corresponding end of described computing machine.
The utility model is by lateral sonde probe measurement potential difference (PD), and this potential difference (PD) has reflected the formation resistivity variation.By demarcation, determine the quantitative relationship between measuring resistance and the measured medium to electrode.Calculate the stratum water saturation by Archie equation.In model, settle the electrode probe of some, just can monitor the variation of oil saturation in the water displacing oil process in real time, make the oil saturation equal-value map.The utility model is applicable to the monitoring of oil saturation field distribution in the artificial Mathematical Model of heaped-up, and the saturation degree error of Ji Suaning is less than 3% thus.
Description of drawings
Fig. 1 is an overall formation synoptic diagram of the present utility model;
Fig. 2 is the structural representation of electrode probe of the present utility model.
The description of symbols of accompanying drawing: 1 upper cover plate; 2 model grooves; 3 stratigraphic models (sand-packed model); 4 electrode probes; 5 pressure caps and rubber seal; 6 pressure probes; 7 four-core joints; 8 array multi pass acquisition devices; 9 digital electric bridges; 10 computing machines; 11 fluid inlets; 12,14,17,19 valves; 13 fluid tank; 15 constant-flux pumps; 16 vacuum pumps; 18 fluid egress points; 20 oil and water separation metering device; 41,44 is transmitting electrode; 42,43 is potential electrode; 45 is basic bar; 46 is electrode four-core joint.
Embodiment
Referring to Fig. 1, the utility model comprises fluid displacement system, sand-packed model and automated collection systems, wherein:
Described sand-packed model comprises upper cover plate 1, model groove 2 and sands insertion into layer model 3, and sands insertion into layer model 3 is filled in the model groove 2, and cover plate 1 is enclosed in the suitable for reading of model groove.
Described automated collection systems comprises: electrode probe 4, pressure cap and rubber seal 5, pressure probe 6, four-core joint 7, array multi pass acquisition device 8, digital electric bridge 9 and computing machine 10.Electrode probe 4 and pressure transducer 6 are inserted into certain depth in the sand-packed model 3 from the bottom surface of described model groove 3, and it is fixing by pressure cap and rubber seal 5, electrode probe 4 is connected by the input end of lead with array multi pass acquisition device 8 with pressure transducer 6, and the latter's output terminal is connected with computing machine 10 by digital electric bridge 9.Described electrode probe 4 is connected with the input end of described array multi pass acquisition device 8 by four-core joint 7.
Described fluid displacement system comprises: constant-flux pump 15, fluid tank 13, vacuum pump 16 and oil and water separation metering device 20.Constant-flux pump 15 is connected with the bottom of described sand-packed model by pipeline with fluid tank 13, and vacuum pump 16 is connected with the top of described sand-packed model by pipeline with oil and water separation metering device 20; On each above-mentioned associated line, be in series with valve 12,14,17 and 19 respectively.The control end of described oil and water separation metering device 20 is connected with the corresponding end of described computing machine 10 with lead.
Shut-off valve 14 and valve 19 in model 3 saturation histories are opened valve 12 and valve 17, after vacuumizing with 16 pairs of models 3 of vacuum pump, allow local water fully is saturated in the model 3 in the fluid tank 13; Close valve 12 and 17 in the displacement process, open valve 14 and 19, in the fluid injection model 3, the fluid of replacing out is measured respectively by oil and water separation metering device 20 by constant-flux pump 15, and is write down respectively and the total water saturation of computation model by computing machine 10.
Referring to Fig. 2, described electrode probe 4 comprises that four electrode retaining collars 41～44, basic bar 45 and 46, four electrode retaining collars of four-core electrode contact are nested on the basic bar 45 of insulation at interval, and four-core electrode contact 46 is connected an end of described basic bar 45.Transmitting electrode ring 41～44 is connected with four leg in the four-core electrode contact 46 respectively by the inside of lead along the basic bar 45 of insulation.
Working mechanism of the present utility model is: by sound, electricity, nuclear, the isoparametric research of power to oil reservoir, find that electrical quantity is the most obvious to the variation of oil saturation.Outside under the effect of electric field, the total current by rock is conduction current and displacement current sum, and the former is relevant with rock conductivity, and the latter is relevant with the specific inductive capacity of rock, and when the frequency shift of outfield, rock conductivity and specific inductive capacity all are frequency functions.So adopt lateral sonde to measure, survey frequency is selected 1KHZ.The utility model adopts four electrode systems: 41,44 are the power supply utmost point, and 42,43 is potential electrode.Supply with a constant electric current I by transmitting electrode 41 and 44, in the stratum, set up electric field after, measure potential difference (PD) with potential electrode 42,43.This potential difference (PD) Δ U23 has reflected electric field distribution characteristic, thereby R=K* Δ U is pressed in the variation of reflection medium electric conductivity and water saturation
23/ I calculated resistance rate R, K is a K factor, it is only relevant with electrode system size, type; I is a supply current.For accurate measured resistivity in finite medium, the electrode system size should be too not big, to satisfy the condition of point source.By demarcation, determine the quantitative relationship between measuring resistance and the measured medium to electrode.Calculate the stratigraphic model water saturation by Archie equation
Rt-oil-bearing formation resistivity in the formula; The Rw-formation water resistivity; A, b-coefficient; The m-porosity exponent; The n-saturation exponent; Φ-formation porosity.These coefficients and index are by the intrinsic property decision of medium, and available experimental technique is determined.In model, settle the electrode probe of some, just can monitor the variation of oil saturation in the water displacing oil process in real time, make the oil saturation equal-value map.
The utility model is measured potential difference (PD) by development lateral sonde probe 4, and this potential difference (PD) has reflected the formation resistivity variation.By demarcation, determine the quantitative relationship between measuring resistance and the measured medium to electrode.Calculate the stratum water saturation by Archie equation.In model, settle the electrode probe 4 of some, just can monitor the variation of oil saturation in the water displacing oil process in real time, make the oil saturation equal-value map.With Mold Making electrode probe, reality has been investigated temperature performance, investigative range, dynamic range, sensitivity, consistance, stability, insulativity and the mechanical property thereof etc. of probe.The utility model is applicable to the monitoring of oil saturation field distribution in the artificial Mathematical Model of heaped-up, and the saturation degree error of Ji Suaning is less than 3% thus.
Claims (3)
1, the analog monitoring device of a kind of oil saturation field is characterized in that: comprise sand-packed model, fluid displacement system and automated collection systems, described fluid displacement system is connected with sand-packed model;
Described sand-packed model comprises upper cover plate, model groove and sands insertion into layer model, and the sands insertion into layer model is filled in the model groove, and cover closure is suitable for reading the model groove;
Described automated collection systems comprises: electrode probe, pressure cap and rubber seal, pressure probe, array multi pass acquisition device, digital electric bridge and computing machine, electrode probe and pressure transducer insert from the bottom surface of described sand-packed model, and fix by pressure cap and rubber seal, electrode probe is connected by the input end of lead with array multi pass acquisition device with pressure transducer, and the latter's output terminal is connected with computing machine by digital electric bridge.
2, the analog monitoring device of oil saturation according to claim 1 field, it is characterized in that: described electrode probe comprises four electrode retaining collars, basic bar and electrode contact, four electrode retaining collars are nested on the basic bar of insulation at interval, constitute the lateral sonde probe, electrode contact is connected an end of described basic bar.
3, the analog monitoring device of oil saturation according to claim 1 and 2 field, it is characterized in that: described fluid displacement system comprises: constant-flux pump, fluid tank, vacuum pump and oil and water separation metering device, constant-flux pump is connected with the bottom of described sand-packed model by pipeline with fluid tank, vacuum pump is connected with the top of described sand-packed model by pipeline with oil and water separation metering device, all is in series with valve on each above-mentioned associated line; The control end of described oil and water separation metering device is connected with the corresponding end of described computing machine.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520000431 CN2771856Y (en) | 2005-02-05 | 2005-02-05 | Analogue monitoring device for oily saturation field |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 200520000431 CN2771856Y (en) | 2005-02-05 | 2005-02-05 | Analogue monitoring device for oily saturation field |
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| CN2771856Y true CN2771856Y (en) | 2006-04-12 |
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| CN 200520000431 Expired - Fee Related CN2771856Y (en) | 2005-02-05 | 2005-02-05 | Analogue monitoring device for oily saturation field |
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Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102175726A (en) * | 2011-01-26 | 2011-09-07 | 西南石油大学 | Device and method for monitoring fluid flow in rock sample at high temperature and high pressure |
| CN102235962A (en) * | 2010-04-20 | 2011-11-09 | 中国石油化工股份有限公司胜利油田分公司地质科学研究院 | Novel device for evaluation of filtration performance of flooding system |
| CN101581220B (en) * | 2009-06-23 | 2012-06-27 | 西安石油大学 | Built-in signal detection sensor for sand production of oil-gas wells |
| CN102590045A (en) * | 2012-03-06 | 2012-07-18 | 中国石油天然气股份有限公司 | Oil-gas interfacial tension testing method in porous medium |
| CN102720476A (en) * | 2012-05-18 | 2012-10-10 | 中国石油大学(北京) | O-shaped well physical simulation experiment device |
| CN103184865A (en) * | 2012-12-18 | 2013-07-03 | 中国石油化工股份有限公司 | Variable-temperature-field displacement simulator for multi-thermal fluid |
| CN103235012A (en) * | 2013-05-20 | 2013-08-07 | 北京环鼎科技有限责任公司 | Resistivity sensor |
| CN103247215A (en) * | 2013-04-12 | 2013-08-14 | 中国石油天然气股份有限公司 | Permeable oil reservoir multilayer commingled production physical simulation system and method |
| CN103541730A (en) * | 2013-08-23 | 2014-01-29 | 中国石油天然气股份有限公司 | Fluid displacement saturation device of large-size physical model and displacement experiment system thereof |
| CN103603658A (en) * | 2013-11-04 | 2014-02-26 | 中国石油大学(北京) | Oil production experimental device capable of simulating reservoir pressure supply |
| CN104198542A (en) * | 2014-08-25 | 2014-12-10 | 东北石油大学 | Laboratory simulation measuring device for Archie formula in geophysical well logging filed |
| CN104675393A (en) * | 2014-12-18 | 2015-06-03 | 四川光亚聚合物化工有限公司 | Core displacement control method and system |
| CN107143331A (en) * | 2017-06-26 | 2017-09-08 | 中国石油大学(华东) | A kind of heterogeneous reservoir oil saturation measurement experiment device |
| CN109751049A (en) * | 2019-03-08 | 2019-05-14 | 北京瑞莱博石油技术有限公司 | One kind passing through resistivity measurement oil saturation device |
| CN110068592A (en) * | 2019-05-06 | 2019-07-30 | 中国石油大学(北京) | Oil gas water transported simulation device and method |
| CN112814656A (en) * | 2021-03-17 | 2021-05-18 | 成都理工大学 | Large-scale high-temperature high-pressure simulation device and method for bottom water sandstone oil reservoir development |
| CN115749758A (en) * | 2022-11-14 | 2023-03-07 | 常州大学 | Experimental device and method for monitoring oil saturation in real time in thickened oil exploitation |
-
2005
- 2005-02-05 CN CN 200520000431 patent/CN2771856Y/en not_active Expired - Fee Related
Cited By (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101581220B (en) * | 2009-06-23 | 2012-06-27 | 西安石油大学 | Built-in signal detection sensor for sand production of oil-gas wells |
| CN102235962A (en) * | 2010-04-20 | 2011-11-09 | 中国石油化工股份有限公司胜利油田分公司地质科学研究院 | Novel device for evaluation of filtration performance of flooding system |
| CN102235962B (en) * | 2010-04-20 | 2013-10-16 | 中国石油化工股份有限公司胜利油田分公司地质科学研究院 | Novel device for evaluation of filtration performance of flooding system |
| CN102175726A (en) * | 2011-01-26 | 2011-09-07 | 西南石油大学 | Device and method for monitoring fluid flow in rock sample at high temperature and high pressure |
| CN102590045A (en) * | 2012-03-06 | 2012-07-18 | 中国石油天然气股份有限公司 | Oil-gas interfacial tension testing method in porous medium |
| CN102720476B (en) * | 2012-05-18 | 2014-10-29 | 中国石油大学(北京) | O-shaped well physical simulation experiment device |
| CN102720476A (en) * | 2012-05-18 | 2012-10-10 | 中国石油大学(北京) | O-shaped well physical simulation experiment device |
| CN103184865A (en) * | 2012-12-18 | 2013-07-03 | 中国石油化工股份有限公司 | Variable-temperature-field displacement simulator for multi-thermal fluid |
| CN103184865B (en) * | 2012-12-18 | 2015-07-08 | 中国石油化工股份有限公司 | Variable-temperature-field displacement simulator for multi-thermal fluid |
| CN103247215A (en) * | 2013-04-12 | 2013-08-14 | 中国石油天然气股份有限公司 | Permeable oil reservoir multilayer commingled production physical simulation system and method |
| CN103235012A (en) * | 2013-05-20 | 2013-08-07 | 北京环鼎科技有限责任公司 | Resistivity sensor |
| CN103541730A (en) * | 2013-08-23 | 2014-01-29 | 中国石油天然气股份有限公司 | Fluid displacement saturation device of large-size physical model and displacement experiment system thereof |
| CN103541730B (en) * | 2013-08-23 | 2016-05-11 | 中国石油天然气股份有限公司 | Fluid displacement saturation device of large-size physical model and displacement experiment system thereof |
| CN103603658A (en) * | 2013-11-04 | 2014-02-26 | 中国石油大学(北京) | Oil production experimental device capable of simulating reservoir pressure supply |
| CN103603658B (en) * | 2013-11-04 | 2015-10-21 | 中国石油大学(北京) | A kind of can the oil production experimental device of simulating oil deposit pressure feed |
| CN104198542A (en) * | 2014-08-25 | 2014-12-10 | 东北石油大学 | Laboratory simulation measuring device for Archie formula in geophysical well logging filed |
| CN104675393A (en) * | 2014-12-18 | 2015-06-03 | 四川光亚聚合物化工有限公司 | Core displacement control method and system |
| CN104675393B (en) * | 2014-12-18 | 2018-04-06 | 四川光亚聚合物化工有限公司 | A kind of rock core displacement control method and system |
| CN107143331A (en) * | 2017-06-26 | 2017-09-08 | 中国石油大学(华东) | A kind of heterogeneous reservoir oil saturation measurement experiment device |
| CN109751049A (en) * | 2019-03-08 | 2019-05-14 | 北京瑞莱博石油技术有限公司 | One kind passing through resistivity measurement oil saturation device |
| CN110068592A (en) * | 2019-05-06 | 2019-07-30 | 中国石油大学(北京) | Oil gas water transported simulation device and method |
| CN112814656A (en) * | 2021-03-17 | 2021-05-18 | 成都理工大学 | Large-scale high-temperature high-pressure simulation device and method for bottom water sandstone oil reservoir development |
| CN115749758A (en) * | 2022-11-14 | 2023-03-07 | 常州大学 | Experimental device and method for monitoring oil saturation in real time in thickened oil exploitation |
| CN115749758B (en) * | 2022-11-14 | 2023-08-08 | 常州大学 | Experimental device and method for monitoring oil saturation of heavy oil exploitation in real time |
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Granted publication date: 20060412 Termination date: 20140205 |