CN207557066U - A kind of pilot system for considering temperature and core permeability gradients affect being blocked to diverting agent - Google Patents
A kind of pilot system for considering temperature and core permeability gradients affect being blocked to diverting agent Download PDFInfo
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- CN207557066U CN207557066U CN201721831233.1U CN201721831233U CN207557066U CN 207557066 U CN207557066 U CN 207557066U CN 201721831233 U CN201721831233 U CN 201721831233U CN 207557066 U CN207557066 U CN 207557066U
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- cavity volume
- diverting agent
- temperature
- intermediate receptacle
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Abstract
The utility model discloses a kind of pilot systems for considering temperature and core permeability gradients affect being blocked to diverting agent, belong to temporarily stifled sour agent experimental technique field.Displacement liquid is connect by conduit with constant-flux pump, and constant-flux pump imports displacement liquid in intermediate receptacle；Diverting agent particle is contained in intermediate receptacle, intermediate receptacle is connect with cavity volume, and the core holding unit of multipoint pressure measure is placed in cavity volume；The chamber wall of cavity volume is hollow structure, and electric heating wire is placed in hollow structure；Thermometer is arranged in cavity volume；Valve is arranged at the inlet pipeline and outlet conduit of cavity volume, and the outlet conduit of cavity volume is connect with electronic balance.In structure designed by the utility model, the temperature of fluid in cavity volume is monitored by electric heating wire and thermometer, in set temperature field, diverting agent under each temperature nodes is recorded by computer and blocks core permeability gradient data, the influence permeated for particle diverting agent under researching high-temperature environment to rock core provides reference.
Description
Technical field
The utility model is related to a kind of pilot systems for considering temperature and core permeability gradients affect being blocked to diverting agent, belong to
In temporarily stifled sour agent experimental technique field.
Background technology
According to consulted relevant information, the plugging effect of diverting agent should have important relationship with diverting agent particle size distribution.
The be averaged optimum matching relation of pore throat diameter of grain size and stratum duct or crack for rigid particles diverting agent is 2: 3~1: 1, and
This value should be slightly bigger than for the grain size of flexible particle diverting agent.According to finding and with reference to neighbouring field situation, oil extraction No.1 Factory
10~100 μm of the pore-size distribution situation of oil field stratum, stratification it is molten seam (natural microcrack) tonicity between 0.02~2mm and
Between 0.2~0.9mm of fracturing fracture back-up sand grain size.Therefore, selection diverting agent particle diameter distribution between 10 μm~2000 μm more
Suitable, particle of the grain size more than 150 μm occupies the majority, and average grain diameter is 200 μm.
In existing experimental study, mostly it is to carry out direct operation using the core holding unit system of multipoint pressure measure, obtains
Result of the test is mostly obtained based on experimental enviroment, therefore test temperature is mostly single, unilateral；In face of some high temperature rings
In border, the increased activity of particle diverting agent, it is also to have very much to the influence that rock core permeates to probe into particle diverting agent under hot environment
It is necessary.
Utility model content
The purpose of this utility model is that by the temperature of temperature control fluid, particle diverting agent pair under hot environment is probed into
The influence of rock core infiltration.
To achieve the above object, the technical solution adopted in the utility model blocks rock core for a kind of consideration temperature to diverting agent
Permeation rate stair influence pilot system, the pilot system include displacement liquid 1, constant-flux pump 2, intermediate receptacle 3, electronic balance 4,
Computer 5, valve 6, the core holding unit 7 of multipoint pressure measure, cavity volume 8, thermometer 9 and electric heating wire 10；Displacement liquid 1 is by leading
Pipe is connect with constant-flux pump 2, and constant-flux pump 2 imports displacement liquid 1 in intermediate receptacle 3；Diverting agent is contained in intermediate receptacle 3
Grain, intermediate receptacle 3 are connect with cavity volume 8, and the core holding unit 7 of multipoint pressure measure is placed in cavity volume 8；During the chamber wall of cavity volume 8 is
Hollow structure, electric heating wire 10 are placed in hollow structure；Thermometer 9 is arranged in cavity volume 8；Valve 6 is arranged on the import of cavity volume 8
At pipeline and outlet conduit, the outlet conduit of cavity volume 8 is connect with electronic balance 4.
The core holding unit 7 and electronic balance 4 of multipoint pressure measure are connect with computer 5.
Compared with prior art, in the structure designed by the utility model, held by electric heating wire and thermometer monitoring
The temperature of fluid in chamber in set temperature field, records diverting agent closure rock core under each temperature nodes by computer and oozes
Saturating rate gradient data, the influence permeated for particle diverting agent under researching high-temperature environment to rock core provide reference.
Description of the drawings
Fig. 1 is the schematic diagram of test structure involved by the utility model.
In figure：1st, displacement liquid, 2, constant-flux pump, 3, intermediate receptacle, 4, electronic balance, 5, computer, 6, valve, 7, multiple spot
The core holding unit of pressure measurement, 8, cavity volume, 9, thermometer, 10, electric heating wire.
Specific embodiment
As shown in Figure 1, a kind of pilot system for considering temperature and core permeability gradients affect being blocked to diverting agent, the experiment
System includes the rock core folder of displacement liquid 1, constant-flux pump 2, intermediate receptacle 3, electronic balance 4, computer 5, valve 6, multipoint pressure measure
Holder 7, cavity volume 8, thermometer 9 and electric heating wire 10；Displacement liquid 1 is connect by conduit with constant-flux pump 2, and constant-flux pump 2 is by displacement
Liquid 1 is imported in intermediate receptacle 3；Diverting agent particle is contained in intermediate receptacle 3, intermediate receptacle 3 is connect with cavity volume 8, and multiple spot is surveyed
The core holding unit 7 of pressure is placed in cavity volume 8；The chamber wall of cavity volume 8 is hollow structure, and electric heating wire 10 is placed on hollow structure
In；Thermometer 9 is arranged in cavity volume 8；Valve 6 is arranged at the inlet pipeline and outlet conduit of cavity volume 8, the outlet of cavity volume 8
Road is connect with electronic balance 4.
The core holding unit 7 and electronic balance 4 of multipoint pressure measure are connect with computer 5.
During experiment, valve 6 is opened, starts constant-flux pump 2, constant-flux pump 2 enters displacement liquid 1 in intermediate receptacle 3, and centre holds
Diverting agent particle in device 3 is driven by fluid into cavity volume 8, and the fluid of extra spilling is flow at electronic balance 4, by electronic balance
The quality that 4 records overflow.
Electric heating wire 10 is adjusted to the temperature of experiment setting by thermometer 9, is cavity volume after the temperature of thermometer 9 is stablized
When diverting agent granule fluid in 8 reaches preset temperature, the core holding unit 7 of multipoint pressure measure starts to start, then through excessive
Experimental data is transmitted in computer 5 by the sensor on the core holding unit 7 of point pressure measurement.
Under the conditions of certain temperature, the factor for influencing selective plugging effect mainly has：
A blocking agent concentration
To verify the concentration of construction liquid, investigation diverting agent suspension injection rate is identical and asynchronous block of concentration is imitated
Fruit.
B blocking agent injection rates
Investigate the leaching people depth and plugging effect when noting people's different multiples pore volume diverting agent, the results showed that, it is temporarily stifled
Agent injection rate is more, and plugging effect is better.
Experiment shows：Under conditions of electric heating wire temperature gradually increases, diverting agent concentration increase, plugging effect improves,
Breakthrough pressure significantly increases.In addition, in experiment it has also been found that, during same concentrations, permeability increase (i.e. duct becomes larger), then pressure-bearing energy
Power reduces, and illustrates to increase with in-place permeability, and construction concentration will accordingly increase (gradually to be increased dense according to pump pressure and note people's speed
Degree, up to more than 10% during sealing) from the aspect of construction effect and economic benefit is met, to select the injection of 5 times of pore volumes
Amount is advisable.The diverting agent injection rate of requirement design can reach certain sealed depth in high permeability zone when therefore constructing at the scene
(>=1m), higher forward and reverse compression shock can be just born in this way, acid solution is avoided to break through into the hypertonic pervious bed of people and miss, together
When can extend the term of validity of water blockoff.
Electric heating wire temperature is higher, and diverting agent primarily enters high permeability rock core, also bigger to flow sealing ratiod, maximum several
Up to 100%.
Claims (1)
1. a kind of pilot system for considering temperature and core permeability gradients affect being blocked to diverting agent, it is characterised in that：The experiment
System includes displacement liquid (1), constant-flux pump (2), intermediate receptacle (3), electronic balance (4), computer (5), valve (6), multiple spot
Core holding unit (7), cavity volume (8), thermometer (9) and the electric heating wire (10) of pressure measurement；Displacement liquid (1) passes through conduit and advection
(2) connection is pumped, constant-flux pump (2) imports displacement liquid (1) in intermediate receptacle (3)；Intermediate receptacle is contained with diverting agent in (3)
Grain, intermediate receptacle (3) are connect with cavity volume (8), and the core holding unit (7) of multipoint pressure measure is placed in cavity volume (8)；Cavity volume (8)
Chamber wall is hollow structure, and electric heating wire (10) is placed in hollow structure；Thermometer (9) is arranged in cavity volume (8)；Valve
(6) it is arranged at the inlet pipeline and outlet conduit of cavity volume (8), the outlet conduit of cavity volume (8) is connect with electronic balance (4)；
The core holding unit (7) and electronic balance (4) of multipoint pressure measure are connect with computer (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721831233.1U CN207557066U (en) | 2017-12-21 | 2017-12-21 | A kind of pilot system for considering temperature and core permeability gradients affect being blocked to diverting agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721831233.1U CN207557066U (en) | 2017-12-21 | 2017-12-21 | A kind of pilot system for considering temperature and core permeability gradients affect being blocked to diverting agent |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207557066U true CN207557066U (en) | 2018-06-29 |
Family
ID=62660684
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721831233.1U Expired - Fee Related CN207557066U (en) | 2017-12-21 | 2017-12-21 | A kind of pilot system for considering temperature and core permeability gradients affect being blocked to diverting agent |
Country Status (1)
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| CN (1) | CN207557066U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111024525A (en) * | 2018-10-10 | 2020-04-17 | 中国石油化工股份有限公司 | Temporary plugging ball evaluation device and method for testing temporary plugging ball plugging performance by using same |
| CN112051190A (en) * | 2020-09-02 | 2020-12-08 | 重庆科技学院 | Method for evaluating permeability of composite osmotic acid |
| CN113238007A (en) * | 2021-05-27 | 2021-08-10 | 中国石油天然气股份有限公司 | Experimental method and device for temporary plugging simulation in rough crack |
| CN114965226A (en) * | 2022-08-01 | 2022-08-30 | 成都理工大学 | Device and method for measuring acidizing and plug removal performance of rock core |
-
2017
- 2017-12-21 CN CN201721831233.1U patent/CN207557066U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111024525A (en) * | 2018-10-10 | 2020-04-17 | 中国石油化工股份有限公司 | Temporary plugging ball evaluation device and method for testing temporary plugging ball plugging performance by using same |
| CN112051190A (en) * | 2020-09-02 | 2020-12-08 | 重庆科技学院 | Method for evaluating permeability of composite osmotic acid |
| CN112051190B (en) * | 2020-09-02 | 2023-08-18 | 重庆科技学院 | Method for evaluating permeability of composite osmotic acid |
| CN113238007A (en) * | 2021-05-27 | 2021-08-10 | 中国石油天然气股份有限公司 | Experimental method and device for temporary plugging simulation in rough crack |
| CN114965226A (en) * | 2022-08-01 | 2022-08-30 | 成都理工大学 | Device and method for measuring acidizing and plug removal performance of rock core |
| CN114965226B (en) * | 2022-08-01 | 2022-11-01 | 成都理工大学 | Device and method for measuring acidizing and plug removal performance of rock core |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180629 Termination date: 20191221 |