CN101424600A - Method for preparing high smectite sandstone casting slice - Google Patents
Method for preparing high smectite sandstone casting slice Download PDFInfo
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- CN101424600A CN101424600A CNA2007101766836A CN200710176683A CN101424600A CN 101424600 A CN101424600 A CN 101424600A CN A2007101766836 A CNA2007101766836 A CN A2007101766836A CN 200710176683 A CN200710176683 A CN 200710176683A CN 101424600 A CN101424600 A CN 101424600A
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- sandstone
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- 238000000034 method Methods 0.000 title claims abstract description 32
- 238000005266 casting Methods 0.000 title claims abstract description 26
- 229910021647 smectite Inorganic materials 0.000 title claims abstract description 21
- 239000011435 rock Substances 0.000 claims abstract description 36
- 238000004512 die casting Methods 0.000 claims abstract description 32
- 238000005406 washing Methods 0.000 claims abstract description 31
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims abstract description 30
- 239000007788 liquid Substances 0.000 claims abstract description 12
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 6
- 239000003822 epoxy resin Substances 0.000 claims abstract description 6
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 6
- 239000000049 pigment Substances 0.000 claims abstract description 5
- 238000009835 boiling Methods 0.000 claims abstract description 3
- 238000005070 sampling Methods 0.000 claims description 7
- 238000007796 conventional method Methods 0.000 claims description 4
- 239000003292 glue Substances 0.000 claims description 3
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical class O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 claims description 3
- 238000001291 vacuum drying Methods 0.000 claims description 3
- 238000004458 analytical method Methods 0.000 claims description 2
- 239000011148 porous material Substances 0.000 abstract description 10
- 238000001035 drying Methods 0.000 abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 3
- 229920001971 elastomer Polymers 0.000 abstract description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical class [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 abstract 1
- 238000005553 drilling Methods 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 description 18
- 208000013201 Stress fracture Diseases 0.000 description 6
- 238000012360 testing method Methods 0.000 description 6
- 239000002734 clay mineral Substances 0.000 description 4
- 230000006378 damage Effects 0.000 description 3
- 230000035699 permeability Effects 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 239000004576 sand Substances 0.000 description 3
- 229910021532 Calcite Inorganic materials 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 230000018044 dehydration Effects 0.000 description 2
- 238000006297 dehydration reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 241001062009 Indigofera Species 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011002 quantification Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- CMQCNTNASCDNGR-UHFFFAOYSA-N toluene;hydrate Chemical compound O.CC1=CC=CC=C1 CMQCNTNASCDNGR-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Sampling And Sample Adjustment (AREA)
- Silicates, Zeolites, And Molecular Sieves (AREA)
Abstract
The invention relates to a method for preparing a high smectite sandstone casting slice, which comprises the following steps of firstly selecting a high smectite sandstone oil-free sample; drilling an oil-free sample determined to be an oil-free rock sample into a cylindrical or cubic shape by using saturated saline water, and cutting a rock sample of 25mm multiplied by 5 mm; washing the rock sample with toluene at normal temperature, and drying; continuously keeping negative pressure at-0.08 MPa in a vacuum oven at normal temperature, drying for 48 hours in vacuum, extracting toluene and water molecules in the rock by using negative pressure, die-casting the rock sample at normal temperature by using a rock pore casting instrument, injecting a die-casting liquid according to the mass ratio of 100 parts of epoxy resin to 35 parts of 593 curing agent to 1 part of pigment, wherein the die-casting time is 1 hour, the pressure is 30MPa, and the vacuum degree value is more than or equal to 8 multiplied by 10－2A torr; grinding the cast body into pieces without boiling rubber after die casting; the method can truly reflect the pore structure parameters in the stratum, and plays an important role in correctly judging the quality of the reservoir properties.
Description
Technical field:
The present invention relates to a kind of flaking method of high smectite class clay mineral casting body flake.
Background technology:
The casting body flake flaking method of present domestic employing is to be background technology with the general rock flaking method in the oil and gas industry standard SY/T 5913-2004 of the People's Republic of China (PRC) rock flaking method.Be to carry out film-making by standard at general rock.
The shortcoming of this flaking method is during the casting body flake rock sample body of casting, to use body of casting instrument to carry out the rock sample hole epoxy resin body of casting.Whatsoever rock sample all needs temperature during the body of casting, and the such clay mineral of image height smectite is met water, heats dehydration to expand, and destroys pore texture.Hole, venturi and microfracture have artificially been increased.The face rate of hole is artificially enlarged.What reflect is not hole real in the stratum.
Summary of the invention:
The objective of the invention is to work out a kind of preparation method of casting body flake, go to proofread and correct with the measured pore texture data of general flaking method, obtain the true parameter of pore structure in stratum at last with the measured pore texture data of casting body flake that this method is made.
The flaking method of high smectite sandstone casting body flake of the present invention:
(1) at first chooses high smectite sandstone and do not contain oil samples with the core description data;
(2) will be defined as not the high smectite sample of sandstone of oil-containing drills through by People's Republic of China's oil and gas industry standard SY/T 5336-1996 rock core conventional method of analysis standard with saturated brine and is shaped as the cylindrical or cuboidal oil samples that do not contain, after the sampling, cut the rock sample of 25mm * 25mm * 5mm;
(3) with the rock sample that cuts with toluene washing oil at normal temperatures, airing;
(4) in vacuum drying oven, under the normal temperature state, keep negative pressure continuously about-0.08MPa, dry vacuum 48 hours is released toluene in the rock and hydrone by negative pressure;
(5) with the blowhole body of casting instrument die casting at normal temperatures of dry rock sample, die casting liquid is pressed 100 parts of epoxy resin: 35 parts in 593 hardening agent: the mass ratio that pigment is 1 part injects, and the die casting time is 1 hour, and pressure is 30MPa, vacuum tightness value 〉=8 * 10
-2Torr;
(6) after die casting finishes, by People's Republic of China's oil and gas industry standard, SY/T5913-1994, the rock flaking method grinds the body of casting under the situation of not boiling glue in blocks.
The effect of invention
The present invention has avoided existing the characteristics of artificial destruction rock texture, truly reflects the parameter of pore structure in the stratum.Proofread and correct the parameter of pore structure that flaking method is routinely measured with not containing measured data of slice, thin piece that oil samples makes, avoided data to have manifestation of dishonesty.To the quality of correct judgement reservoir quality, the exploration oil prospecting is played an important role.
Embodiment
Embodiment 1-5
Burn room ditch group at B701 well and B703 well, do not contain well section and chosen 5 samples, with the piece sample respectively by the washing oil the inventive method of not heating) and the washing oil of heating (conventional method) do parameter of pore structure (face rate etc.) respectively.
High smectite sandstone casting body flake flaking method processing step is as follows:
1 sampling
1.1 the preliminary work before the sampling
Describe according to core, judge sample earlier and be not oil-bearing sand.
1.2. sampling
Require: must get not oil-bearing sand.It is exactly for the washing oil of not heating that this method choosing does not contain the oil samples purpose.General all mensuration factor of porosity, the isoparametric oil-containing rock sample of permeability must washing oil before measuring.
2 do not contain the sampling of oil samples
Available diamond coring crown and saw blade are cut into rock core drill cylindrical or cube.Get the small column sample, general diameter is 2.5cm or 3.8cm, and minimum length is 1 with the diameter ratio.
During boring sample, be noted that especially: what shale index was high must drill through with saturated brine.
2.1 the sampling of body of casting sample
Get 25mm * 25mm * two samples of 5mm (the method washing oil of not heating with invention comes the die casting film-making, and another piece is heated behind the washing oil, and flaking method die casting film-making is stand-by routinely).
2.2 on every rock sample, indicate pound sign, rock sample number with burnt black ink.
3 washing oil of not heating
Washing oil method: get 25mm * 25mm * sample of 5mm and be put in the flask, toluene solvant is annotated 2/3 place of people to flask, rock sample is put in people's exhausting cabinet, the sealing bottleneck.Soak not oil-bearing sand sample with toluene, changed once new toluene in one day, change two to three times, during the toluene water white transparency till.
The sample of washing oil 3.1 will not heat, cool last one day.
3.2 sample drying
Use boulton process, its method is: in vacuum drying oven, under the normal temperature state, keep negative pressure continuously about-0.08MPa, dry vacuum 48 hours.Purpose is by negative pressure toluene in the rock and hydrone to be released, and does not destroy the structure of clay mineral itself again.
Put into exsiccator 3.3 will vacuumize dry good sample.
3.4 preparation die casting liquid
By following prescription, (injectant 100: hardening agent 35: the preparation mass ratio of pigment 1) fully stirs evenly under the normal temperature now to prepare die casting liquid.Injectant is a low viscosity epoxy resin, and hardening agent is 593 hardening agent, and pigment is transparent indigo plant.
4 die casting
Use JS-3 type blowhole body of casting instrument, carry out the rock sample hole epoxy resin body of casting
Contain in the sample test tube 4.1 rock sample packed in order, again test tube is put into vacuum system, and tighten rubber plug, close the vacuum liquid-absorbing valve.
4.2 set the working time of this die casting is 1 hour (the panel closed condition is fixed time).
4.3 power supply on the connection panel.
4.4 open total power switch and vacuum power switch on the instrument panel, to find time 1 hour, the vacuum tightness value is not less than 8 * 10
-2Torr.
4.5 will fully stir evenly under the 3.4 die casting liquid normal temperature that configure.
4.6 open liquid sucting valve, die casting liquid is sucked in the test tube automatically, die casting liquid liquid level will exceed more than the rock sample 3cm, finds time 15 minutes again.
4.7 close the vacuum power switch, open the logical atmosphere of liquid sucting valve.
Contain the sample test tube 4.8 take out, put into a new test tube simultaneously, and clean liquid sucting valve with ethanol.
5 open hyperbaric chamber nut and loam cake, and put into and contain the sample test tube.
5.1 open pressurizing valve and bleed-off valve, open the oil pump power switch, make oil rise to certain position, close the oil pump power switch.
5.2 cover top cover, jam nut and dead stifled closes bleed-off valve.
Close pressurizing valve 5.3 open after the oil pump power supply makes pressure rise to 30MPa, and lift and compress again after unloading depression bar on the oil pump.
6. close the temperature-controlled power switch, normal temperature die casting.
7 film-makings
After die casting finishes, again by People's Republic of China's oil and gas industry standard, SY/T5913-1994, the rock flaking method grinds body of casting sheet, but does not boil glue.
8, rock sample that step 2.1 is standby, according to conventional rerum natura, after the method for the washing oil of heating, the baking sample of heating is handled, die casting according to a conventional method, film-making again.
9, two thin slices at the same position that two kinds of methods are made carry out the parameter of pore structure contrast, as: the face rate.Find out difference and identical point.How many real face rates in quantification directly perceived explanation stratum is and finds out the reason that causes false data.
In order to study high smectite sandstone dehydration reservoir quality there are much influences.Get high smectite sandstone real face rate in the stratum clear what are.Die casting film-making new method and conventional body of casting flaking method with invention have carried out the problem experiment.Data see Table 1.
Room ditch group the heat face rate parameter comparison of washing oil die casting film-making of washing oil die casting film-making (the present invention) and routine of not heating is burnt in northern 80 wellblocks of table 1
| Pound sign | Well depth | Layer position | Factor of porosity % | Permeability * 10 -3 μm 2 | The face rate | Smectite % | Ferroan calcite % | Remarks | Factor of porosity % | Permeability * 10 -3 μm 2 | Face rate % | Smectite % | Ferroan calcite % | Remarks |
| B703 | 2088.1 | Tls | 19.7 | 5.06 | There are not 2 of the hole of showing seams | 20 | Washing oil is heated | 9.811 | (3.48 the crack is arranged) | There is not 1 of the hole of showing seam | 20 | The washing oil of not heating | ||
| B703 | 2106.9 | Tls | There is not 1 of the hole of showing seam | 20 | Washing oil is heated | It is seamless not have the hole of showing | 20 | The washing oil of not heating | ||||||
| B703 | 2122.8 | Tls | 22.1 | 12.2 | It is seamless not have the hole of showing | 20 | Washing oil is heated | 18.36 | 7.78 | It is seamless not have the hole of showing | 20 | The washing oil of not heating | ||
| B701 | 2237.9 | Tls | 13.8 | 0.142 | It is seamless not have the hole of showing | 30 | Washing oil is heated | 7.44 | 0.06 | It is seamless not have the hole of showing | 30 | The washing oil of not heating | ||
| B701 | 2230.9 | Tls | 17.9 | 2.36 | There are not 6 of the hole of showing seams | 15 | Washing oil is heated | 13.45 | 1 | It is seamless not have the hole of showing | 15 | The washing oil of not heating |
Observe down by the mirror to 5 block casting body thin slices, there is not apparent hole in the sample face rate of the new method of invention (washing oil of not heating) die casting film-making, does not have microfracture yet.The sheet of die casting system behind the washing oil but out-of-date methods are heated, the face rate does not have apparent hole yet, but that microfracture has increased is many, and microfracture is all arranged on the every sample, and maximum microfractures has increased by 6 (seeing Table 1).
The thin slice that the washing oil die casting of heating is routinely made is described, bigger to the inner structure destruction of smectite clay mineral, cause the distortion of data.The reason that causes data distortion is to heat to have caused a lot of microfractures.
Make sheet data of coming and the thin slice that the conventional washing oil die casting of heating of correction is made with the inventive method die casting and measure next data contrast.The one, illustrated that intuitively the washing oil of heating, baking sample have destruction really to the structure of high smectite sandstone.The 2nd, with data-measuring the washing oil of heating, the structure of high smectite sandstone is destroyed on earth is what to the baking sample, how much quantity is.Find high smectite sandstone real face rate value in the stratum.
Claims (1)
1. the flaking method of one kind high smectite sandstone casting body flake is characterized in that:
(1) at first chooses high smectite sandstone and do not contain oil samples with the core description data;
(2) will be defined as not the high smectite sample of sandstone of oil-containing drills through by People's Republic of China's oil and gas industry standard SY/T 5336-1996 rock core conventional method of analysis standard with saturated brine and is shaped as the cylindrical or cuboidal oil samples that do not contain, after the sampling, cut the rock sample of 25mm * 25mm * 5mm;
(3) with the rock sample that cuts with toluene washing oil at normal temperatures, airing;
(4) in vacuum drying oven, under the normal temperature state, keep negative pressure continuously at-0.08MPa, dry vacuum 48 hours is released toluene in the rock and hydrone by negative pressure;
(5) with the blowhole body of casting instrument die casting at normal temperatures of dry rock sample, die casting liquid is pressed 100 parts of epoxy resin: 35 parts in 593 hardening agent: the mass ratio that pigment is 1 part injects, and the die casting time is 1 hour, and pressure is 30MPa, vacuum tightness value 〉=8 * 10
-2Torr;
(6) after die casting finishes, by People's Republic of China's oil and gas industry standard, SY/T5913-1994, the rock flaking method grinds the body of casting under the situation of not boiling glue in blocks.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101766836A CN101424600B (en) | 2007-11-01 | 2007-11-01 | Method for preparing high smectite sandstone casting slice |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101766836A CN101424600B (en) | 2007-11-01 | 2007-11-01 | Method for preparing high smectite sandstone casting slice |
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| Publication Number | Publication Date |
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| CN101424600A true CN101424600A (en) | 2009-05-06 |
| CN101424600B CN101424600B (en) | 2010-09-01 |
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| CN102758621A (en) * | 2011-04-28 | 2012-10-31 | 中国石油天然气集团公司 | Preparation method for density logger graduation high density value standard die block |
| CN104212124A (en) * | 2013-06-05 | 2014-12-17 | 中国石油天然气股份有限公司 | Cementing agent prepared from geological rock slices |
| CN104422670A (en) * | 2013-08-30 | 2015-03-18 | 中国石油天然气股份有限公司 | Method for identifying particle-level volcanic dust tuff |
| CN104422692A (en) * | 2013-08-30 | 2015-03-18 | 中国石油天然气股份有限公司 | Method for identifying particle-level volcanic dust tufaceous mudstone |
| CN104833562A (en) * | 2015-05-08 | 2015-08-12 | 成都理工大学 | Rapid manufacturing method for rock casting body slice |
| CN106153413A (en) * | 2015-04-23 | 2016-11-23 | 中国石油天然气股份有限公司 | Carbonate rock debris micro-pore casting method |
| CN108956423A (en) * | 2018-07-19 | 2018-12-07 | 中国石油大学(华东) | Determine rock two dimension porosity-three-dimensional apertures porosity quantitative relationship method |
| CN110715887A (en) * | 2018-07-12 | 2020-01-21 | 中国石油化工股份有限公司 | Bituminous sand porosity determination device and method |
| CN111157310A (en) * | 2019-12-31 | 2020-05-15 | 中国石油天然气股份有限公司 | Rock casting body slice die-casting preparation method |
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| CN102758621B (en) * | 2011-04-28 | 2015-05-13 | 中国石油天然气集团公司 | Preparation method for density logger graduation high density value standard die block |
| CN102758621A (en) * | 2011-04-28 | 2012-10-31 | 中国石油天然气集团公司 | Preparation method for density logger graduation high density value standard die block |
| CN104212124A (en) * | 2013-06-05 | 2014-12-17 | 中国石油天然气股份有限公司 | Cementing agent prepared from geological rock slices |
| CN104422692B (en) * | 2013-08-30 | 2017-10-17 | 中国石油天然气股份有限公司 | Method for identifying particle-level volcanic dust tufaceous mudstone |
| CN104422670A (en) * | 2013-08-30 | 2015-03-18 | 中国石油天然气股份有限公司 | Method for identifying particle-level volcanic dust tuff |
| CN104422692A (en) * | 2013-08-30 | 2015-03-18 | 中国石油天然气股份有限公司 | Method for identifying particle-level volcanic dust tufaceous mudstone |
| CN104422670B (en) * | 2013-08-30 | 2017-10-17 | 中国石油天然气股份有限公司 | Method for identifying particle-level volcanic dust tuff |
| CN106153413A (en) * | 2015-04-23 | 2016-11-23 | 中国石油天然气股份有限公司 | Carbonate rock debris micro-pore casting method |
| CN106153413B (en) * | 2015-04-23 | 2019-08-02 | 中国石油天然气股份有限公司 | Carbonate rock debris micro-pore casting method |
| CN104833562A (en) * | 2015-05-08 | 2015-08-12 | 成都理工大学 | Rapid manufacturing method for rock casting body slice |
| CN110715887A (en) * | 2018-07-12 | 2020-01-21 | 中国石油化工股份有限公司 | Bituminous sand porosity determination device and method |
| CN108956423A (en) * | 2018-07-19 | 2018-12-07 | 中国石油大学(华东) | Determine rock two dimension porosity-three-dimensional apertures porosity quantitative relationship method |
| CN111829842A (en) * | 2019-04-18 | 2020-10-27 | 中国石油天然气股份有限公司 | Rock sample rack and method for pouring cast body into rock |
| CN111829842B (en) * | 2019-04-18 | 2023-05-26 | 中国石油天然气股份有限公司 | Rock sample rack and rock pouring method for cast body |
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