CN107817140A - A kind of artificial sandpack column pipe fill method - Google Patents
A kind of artificial sandpack column pipe fill method Download PDFInfo
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- CN107817140A CN107817140A CN201710897988.XA CN201710897988A CN107817140A CN 107817140 A CN107817140 A CN 107817140A CN 201710897988 A CN201710897988 A CN 201710897988A CN 107817140 A CN107817140 A CN 107817140A
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- sandpack column
- sand
- column pipe
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/286—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q involving mechanical work, e.g. chopping, disintegrating, compacting, homogenising
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/24—Earth materials
Abstract
The present invention relates to a kind of artificial sandpack column pipe fill method.It is main solve the problems, such as Traditional Man hammering method fail to resolve when three factors for influenceing sandpack column pipe permeability cause to make model it is random it is big, success rate is relatively low can not meet displacement test needs.It is characterized in that:Comprise the following steps:(1)Determine targeted permeability sand mold mix proportion scheme:According to oilfield reservoir physical parameter statistics and particle size distribution test result, it is determined that from 4 grades of quartz sand point, after the quartz sand for determining different meshes first, its proportion in a model is adjusted, it is respectively the sand mold mix proportion scheme of 300md, 500md, 800md, 1600md sand-filling tube model that perm-plug method, which is finally determined,;(2)Determine model pipe filling and tap scheme.The artificial sandpack column pipe fill method can realize the characteristics of artificial sandpack column pipe core permeability size is controllable, permeability collimation is good, oil displacement experiment is reproducible.
Description
Technical field
The present invention relates to oil field development physical simulation experiment technical field, more particularly to a kind of artificial sandpack column pipe filling
Method.
Background technology
Physical simulation experiment technology is one of key technology of scientific research in oilfield development process, is that deep announcement oil gas is secondary
Migration and a kind of extremely important means and method of Accumulation Mechanism, in tertiary oil recovery research process, substantial amounts of mechanism of oil displacement,
Formula and injection mode optimization, oil displacement agent performance evaluation and oil displacement efficiency checking are required to complete using physical simulation experiment.
Laboratory physical simulation experiment is as needed, is typically chosen natural core and artificial core, but natural core length is shorter and resource
Deficiency, seriously constrain the development of displacement test.Artificial core uses epoxy resin as cementing agent, high temperature high voltage resistant performance compared with
Difference, and epoxy resin is larger in the amine curing agent, benzene class diluent toxicity for diluting with being commonly used in solidification process, harmful to human
Health.Natural core and conventional artificial's rock core are replaced from simple and practical artificial sandpack column pipe rock core, is to carry out various drives
For the preferable selection of experiment.Traditional Man hammering method fails to resolve three factors for influenceing sandpack column pipe permeability, including
Quartz sand mesh number ratio, filling number, number of taps, therefore the shortcomings of random big, success rate is relatively low during model is made,
The needs of displacement test can not be met, seriously constrain the development of displacement test research work in chemical flooding room.
The content of the invention
The invention reside in overcome Traditional Man hammering method present in background technology to fail to resolve the pipe infiltration of influence sandpack column
Three factors of rate cause to make random big, success rate relatively low the problem of can not meeting displacement test needs during model, and carry
For a kind of artificial sandpack column pipe fill method.The artificial sandpack column pipe fill method can realize artificial sandpack column Guan Yan
The characteristics of heart permeability size is controllable, permeability collimation is good, oil displacement experiment is reproducible.
The present invention, which solves its problem, to be reached by following technical solution:A kind of artificial sandpack column pipe fill method, including
Following steps:
(1) targeted permeability sand mold mix proportion scheme is determined:
According to oilfield reservoir physical parameter statistics and particle size distribution test result, it is determined that from 4 grades of quartz sand point, divide
Wei not 40-80 mesh, 80-100 mesh, 100-150 mesh, 200-300 mesh;First determine different meshes quartz sand after, adjust its
Proportion in model, research sand mold finally determine that perm-plug method is distinguished with the influence for comparing sand-filling tube model permeability
For the sand mold mix proportion scheme of 300md, 500md, 800md, 1600md sand-filling tube model;
(2) determine model pipe filling and tap scheme:
After step (1) determines the sand mold mix proportion scheme of sand-filling tube model corresponding to different perm-plug methods, filled out it is determined that making one
Number of taps after filling number and each filling needed for sand model pipe, to investigate filling number and number of taps to sandpack column
The influence of pipe permeability;
Step (1) the 300mD permeabilities sand mold proportioning is 40-80 mesh 6.22%, 80-100 mesh 62.24%, 100-150 mesh
24.90%th, 200-300 mesh 6.64%;500mD permeabilities sand mold proportioning for 40-80 mesh 19.75%, 80-100 mesh 67.90%,
100-150 mesh 9.38%, 200-300 mesh 2.96%;800mD permeabilities sand mold proportioning is 40-80 mesh 25.34%, 80-100 mesh
66.18%th, 100-150 mesh 6.57%, 200-300 mesh 1.91%;1600mD permeabilities sand mold proportioning for 40-80 mesh 30.77%,
80-100 mesh 65.93%, 100-150 mesh 2.64%, 200-300 mesh 0.66%.
Described (2) sandpack column pipes of step need point 5 fillings to complete;Number of taps is 500 times after filling every time.
It is of the invention to be had the advantages that compared with above-mentioned background technology:Using the artificial sandpack column pipe of the present invention
Fill method, by determining mixed proportion, filling number and the rational number of taps of different meshes quartz sand, realize artificial
Sand-filling tube model permeability size is controllable, core permeability collimation is good, physical contradictions are reproducible, is fully able to
Meet oil field oil displacement system Lab-evaluation research needs.It can be widely applied to mechanism of oil displacement, formula and injection mode optimization, drive
Oil performance is evaluated and oil displacement efficiency checking.
Brief description of the drawings
Accompanying drawing 1 is sandpack column pipe device structural representation of the present invention;
Accompanying drawing 2 is to fill the relation curve that number influences on sandpack column pipe perm-plug method;
Accompanying drawing 3 is the relation curve that number of taps influences on sandpack column pipe perm-plug method.
Embodiment:
Below in conjunction with specific embodiment, the invention will be further described:
Embodiment:
A kind of artificial sandpack column pipe fill method, the step of using for:
1st, sand mold mix proportion scheme is determined
According to Daqing oilfield reservoir physical parameter statistics and particle size distribution test result (being shown in Table 1), it is determined that selected by the present invention
With 4 grades of quartz sand point, respectively 40-80 mesh, 80-100 mesh, 100-150 mesh, 200-300 mesh.We determine difference first
After the quartz sand of mesh number, its proportion in a model is adjusted, research sand mold matches somebody with somebody the influence for comparing sand-filling tube model permeability, most
Determine eventually perm-plug method be respectively 300md, 500md, 800md, 1600md sand-filling tube model sand mold mix proportion scheme (see
Table 2).
The natural core particle size distribution test tables of data of table 1
The mesh number and proportion of the artificial sandpack column pipe difference permeability sand mold of table 2
2nd, model pipe filling and the determination of percussion scheme
To control sand-filling tube model permeability, make its reproducible, it is necessary to fixed padding scheme, including make a sandpack column
Number of taps after filling number and each filling needed for pipe.The present invention is two kinds of sand molds of 300mD and 1600mD from permeability,
To investigate the influence of filling number and number of taps to sandpack column pipe permeability.Fixed number of taps is 400 times, respectively according to
Filling 1 time~8 times, it can be found that filling number perm-plug method since 5 times is substantially unchanged, it is thus determined that filling number is
5 times (as shown in Figure 2);Fixed filling number is 5 times, investigates influence of the number of taps to perm-plug method, it can be found that from striking
500 beginnings of number are hit, perm-plug method varies less, it is thus determined that number of taps is 500 times (as shown in Figure 3).
As shown in figure 1, the artificial sandpack column pipe device of the present invention, using the artificial sandpack column pipes 1 of 100cm, support 2, base, pressure
Real bar 3, gim peg 4;Base top connecting bracket 2, support 2 is interior to be fixedly connected with sandpack column pipe 1, institute by gim peg 4
State artificial sandpack column pipe 1 and be built-in with compaction rod 3.
The specific padding scheme of model is divided into following steps:
(1) according to experiment needs, corresponding permeability sand mold mix proportion scheme is selected;
(2) according to sand mold mix proportion scheme, weigh in the balance and take quartz sand quality;
(3) different meshes quartz sand is sufficiently mixed uniformly;
(4) sandpack column pipe 1 is fixed on support 2, fixed with gim peg 4;
(5) according to padding scheme, the mixed quartz sand of ratio as shown in table 2 is added into sandpack column pipe 1;
(6) compaction rod 3 is put into sandpack column pipe 1;
(7) it is artificial to tap 500 times;
(8) compaction rod 3 is taken out;
(9) (5)-(8) process is repeated, is made until completing sand-filling tube model.
According to the artificial sandpack column pipe fill method of the present invention, to being carried out according to the sandpack column pipe after the completion of model padding scheme
Displacement test, each permeability scheme carry out 3 experiments, totally 12 experiments of four kinds of permeability sand mold schemes, sand-filling tube model
Perm-plug method measures and waterflood recovery efficiency factor the results are shown in Table 3:
Table 3
From table 3 it can be seen that by the inventive method make sand-filling tube model perm-plug method scope (298-307) mD,
(496-509) mD, (796-806) mD, (1601-1614) mD, with target perm-plug method 300mD, 500mD, 800mD,
1600mD is substantially close to relative error is smaller.In addition, in terms of waterflood recovery efficiency factor experimental result, 300mD waterflood recovery efficiency factor average out to
53.24%th, 500mD waterflood recovery efficiency factors average out to 54.93%, 800mD waterflood recovery efficiency factors average out to 55.31%, 1600mD water drives
Recovery ratio average out to 60.64%, 3 experiment waterflood recovery efficiency factors of every kind of permeability sand mold are close, and water drive result collimation is good,
Illustrate the sand-filling tube model inside sand mould structure stabilization made by the inventive method, experimental repeatability is good, is fully able to meet
The needs of oil field indoor physical simulation evaluation experimental.
Claims (7)
1. a kind of artificial sandpack column pipe fill method, comprises the following steps:
(1)Determine targeted permeability sand mold mix proportion scheme:
According to oilfield reservoir physical parameter statistics and particle size distribution test result, it is determined that from 4 grades of quartz sand point, divide
Wei not 40-80 mesh, 80-100 mesh, 100-150 mesh, 200-300 mesh;First determine different meshes quartz sand after, adjust its
Proportion in model, research sand mold finally determine that perm-plug method is distinguished with the influence for comparing sand-filling tube model permeability
For the sand mold mix proportion scheme of 300md, 500md, 800md, 1600md sand-filling tube model;
(2)Determine model pipe filling and tap scheme:
Step(1)After the sand mold mix proportion scheme for determining sand-filling tube model corresponding to different perm-plug methods, filled out it is determined that making one
Number of taps after filling number and each filling needed for sand model pipe, to investigate filling number and number of taps to sandpack column
The influence of pipe permeability.
A kind of 2. artificial sandpack column pipe fill method according to claim 1, it is characterised in that:The step(1)
300mD permeabilities sand mold proportioning is 40-80 mesh 6.22%, 80-100 mesh 62.24%, 100-150 mesh 24.90%, 200-300 mesh
6.64%。
A kind of 3. artificial sandpack column pipe fill method according to claim 1, it is characterised in that:The step(1)
500mD permeabilities sand mold proportioning is 40-80 mesh 19.75%, 80-100 mesh 67.90%, 100-150 mesh 9.38%, 200-300 mesh
2.96%。
A kind of 4. artificial sandpack column pipe fill method according to claim 1, it is characterised in that:The step(1)
800mD permeabilities sand mold proportioning is 40-80 mesh 25.34%, 80-100 mesh 66.18%, 100-150 mesh 6.57%, 200-300 mesh
1.91%。
A kind of 5. artificial sandpack column pipe fill method according to claim 1, it is characterised in that:The step(1)
1600mD permeabilities sand mold proportioning is 40-80 mesh 30.77%, 80-100 mesh 65.93%, 100-150 mesh 2.64%, 200-300 mesh
0.66%。
A kind of 6. artificial sandpack column pipe fill method according to claim 1, it is characterised in that:The step(2)One
Branch sandpack column pipe needs point 5 fillings to complete.
A kind of 7. artificial sandpack column pipe fill method according to claim 1, it is characterised in that:The step(2)Often
Number of taps is 500 times after secondary filling.
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Cited By (4)
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CN109296362A (en) * | 2018-08-31 | 2019-02-01 | 中国石油天然气股份有限公司 | Rotate sand-filling apparatus, the rotation back-up sand system and method applied to sandpack column |
CN109443877A (en) * | 2018-12-16 | 2019-03-08 | 东北石油大学 | A kind of thick oil steam drive high temperature high voltage resistant rock core preparation method |
CN113107459A (en) * | 2021-03-29 | 2021-07-13 | 西安石油大学 | Oil displacement sand pipe model sand filling-discharging integrated device and experimental method |
CN114047298A (en) * | 2021-11-17 | 2022-02-15 | 中国石油天然气股份有限公司 | Sand filling model manufacturing device and manufacturing method thereof |
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CN109296362A (en) * | 2018-08-31 | 2019-02-01 | 中国石油天然气股份有限公司 | Rotate sand-filling apparatus, the rotation back-up sand system and method applied to sandpack column |
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CN109443877A (en) * | 2018-12-16 | 2019-03-08 | 东北石油大学 | A kind of thick oil steam drive high temperature high voltage resistant rock core preparation method |
CN113107459A (en) * | 2021-03-29 | 2021-07-13 | 西安石油大学 | Oil displacement sand pipe model sand filling-discharging integrated device and experimental method |
CN114047298A (en) * | 2021-11-17 | 2022-02-15 | 中国石油天然气股份有限公司 | Sand filling model manufacturing device and manufacturing method thereof |
CN114047298B (en) * | 2021-11-17 | 2024-04-09 | 中国石油天然气股份有限公司 | Sand filling model manufacturing device and manufacturing method thereof |
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