CN108007745A - Toughening type polyester fiber anorthite prepares the well cementation test block performance test of oil well water-impervious - Google Patents
Toughening type polyester fiber anorthite prepares the well cementation test block performance test of oil well water-impervious Download PDFInfo
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- CN108007745A CN108007745A CN201711168579.2A CN201711168579A CN108007745A CN 108007745 A CN108007745 A CN 108007745A CN 201711168579 A CN201711168579 A CN 201711168579A CN 108007745 A CN108007745 A CN 108007745A
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- slurries
- well
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- 238000012360 testing method Methods 0.000 title claims abstract description 83
- 239000003129 oil well Substances 0.000 title claims abstract description 24
- 229910052661 anorthite Inorganic materials 0.000 title claims abstract description 21
- GWWPLLOVYSCJIO-UHFFFAOYSA-N dialuminum;calcium;disilicate Chemical compound [Al+3].[Al+3].[Ca+2].[O-][Si]([O-])([O-])[O-].[O-][Si]([O-])([O-])[O-] GWWPLLOVYSCJIO-UHFFFAOYSA-N 0.000 title claims abstract description 21
- 239000000835 fiber Substances 0.000 title claims abstract description 18
- 229920000728 polyester Polymers 0.000 title claims abstract description 17
- 238000011056 performance test Methods 0.000 title claims abstract description 12
- 239000002002 slurry Substances 0.000 claims abstract description 62
- 239000000203 mixture Substances 0.000 claims abstract description 25
- 239000002245 particle Substances 0.000 claims abstract description 19
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000011148 porous material Substances 0.000 claims abstract description 17
- 239000004568 cement Substances 0.000 claims abstract description 14
- 239000000919 ceramic Substances 0.000 claims abstract description 10
- 239000004088 foaming agent Substances 0.000 claims abstract description 9
- 239000004005 microsphere Substances 0.000 claims abstract description 9
- 239000000843 powder Substances 0.000 claims abstract description 9
- 239000011347 resin Substances 0.000 claims abstract description 9
- 229920005989 resin Polymers 0.000 claims abstract description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 8
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims abstract description 8
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 8
- 239000010439 graphite Substances 0.000 claims abstract description 8
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000011325 microbead Substances 0.000 claims abstract description 7
- 238000002156 mixing Methods 0.000 claims abstract description 7
- 238000005070 sampling Methods 0.000 claims abstract description 7
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 7
- 238000003756 stirring Methods 0.000 claims abstract description 7
- 239000000292 calcium oxide Substances 0.000 claims abstract description 6
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims abstract description 6
- 235000013312 flour Nutrition 0.000 claims abstract description 6
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims abstract description 5
- 239000010881 fly ash Substances 0.000 claims abstract description 5
- 229910052938 sodium sulfate Inorganic materials 0.000 claims abstract description 4
- 235000011152 sodium sulphate Nutrition 0.000 claims abstract description 4
- 238000002360 preparation method Methods 0.000 claims description 14
- 238000002474 experimental method Methods 0.000 claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- 238000007789 sealing Methods 0.000 claims description 11
- 230000018044 dehydration Effects 0.000 claims description 10
- 238000006297 dehydration reaction Methods 0.000 claims description 10
- 230000002708 enhancing effect Effects 0.000 claims description 8
- 239000011440 grout Substances 0.000 claims description 8
- 239000011521 glass Substances 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 6
- 230000035939 shock Effects 0.000 claims description 6
- 238000006703 hydration reaction Methods 0.000 claims description 4
- 238000005213 imbibition Methods 0.000 claims description 4
- 239000002956 ash Substances 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 3
- 238000004088 simulation Methods 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- 230000007480 spreading Effects 0.000 claims description 3
- 238000003892 spreading Methods 0.000 claims description 3
- 239000007789 gas Substances 0.000 claims description 2
- 238000002347 injection Methods 0.000 claims description 2
- 239000007924 injection Substances 0.000 claims description 2
- 230000003014 reinforcing effect Effects 0.000 claims description 2
- 238000005245 sintering Methods 0.000 claims description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims 1
- 239000011575 calcium Substances 0.000 claims 1
- 229910052791 calcium Inorganic materials 0.000 claims 1
- 239000004575 stone Substances 0.000 claims 1
- 230000008859 change Effects 0.000 description 9
- 230000035699 permeability Effects 0.000 description 9
- 239000004411 aluminium Substances 0.000 description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 7
- 239000011083 cement mortar Substances 0.000 description 7
- 229910052782 aluminium Inorganic materials 0.000 description 6
- 230000002742 anti-folding effect Effects 0.000 description 6
- 239000000499 gel Substances 0.000 description 6
- 238000007711 solidification Methods 0.000 description 6
- 230000008023 solidification Effects 0.000 description 6
- 235000012241 calcium silicate Nutrition 0.000 description 4
- 239000000378 calcium silicate Substances 0.000 description 3
- 229910052918 calcium silicate Inorganic materials 0.000 description 3
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical compound [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 description 3
- 239000006071 cream Substances 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000007654 immersion Methods 0.000 description 2
- 230000008595 infiltration Effects 0.000 description 2
- 238000001764 infiltration Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- ATRRKUHOCOJYRX-UHFFFAOYSA-N Ammonium bicarbonate Chemical compound [NH4+].OC([O-])=O ATRRKUHOCOJYRX-UHFFFAOYSA-N 0.000 description 1
- 229910000013 Ammonium bicarbonate Inorganic materials 0.000 description 1
- 229920004933 Terylene® Polymers 0.000 description 1
- PPQREHKVAOVYBT-UHFFFAOYSA-H aluminium carbonate Inorganic materials [Al+3].[Al+3].[O-]C([O-])=O.[O-]C([O-])=O.[O-]C([O-])=O PPQREHKVAOVYBT-UHFFFAOYSA-H 0.000 description 1
- 235000012538 ammonium bicarbonate Nutrition 0.000 description 1
- 239000001099 ammonium carbonate Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000001914 calming effect Effects 0.000 description 1
- 229910052681 coesite Inorganic materials 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 229910052682 stishovite Inorganic materials 0.000 description 1
- 229910052905 tridymite Inorganic materials 0.000 description 1
- 229910001845 yogo sapphire Inorganic materials 0.000 description 1
Classifications
-
- 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
-
- 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
- G01N33/38—Concrete; Lime; Mortar; Gypsum; Bricks; Ceramics; Glass
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Biochemistry (AREA)
- Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Engineering & Computer Science (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Ceramic Engineering (AREA)
- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The present invention provides a kind of toughening type polyester fiber anorthite and prepares the well cementation test block performance test of oil well water-impervious, comprises the following steps：The dispensing of water-impervious well cementation test block：By G grades of 40~50wt% of oil-well cement, 10~15wt% of superfine cement, particle diameter is 50~300 μm of 25~35wt% of anorthite closed pore hollow ceramic microspheres, 5~7wt% of flyash of loss on ignition 1.1%, 99.9% 1.5~2wt% of calcium oxide of purity, 0.5~1.0wt% of sodium sulphate, 1~5wt% of silica flour and 1.0~2wt% of alumina powder samplings, obtain mixture, the sum of percentage by weight of above component is 100%, the ratio of mud that obtained mixture is equipped with to 0.5~0.7 sizes mixing slurries is made, add the foaming agent that mixture gross weight is 0.2~0.5%, polyester fiber is proportionally added into again, graphite microbeads and swollen resin, stir evenly, carry out water-impervious performance test.
Description
Technical field
The present invention relates to pleat-free polyester fiber anorthite ore to prepare the well cementation test block performance test of oil well water-impervious, belongs to
Material technology is led.
Background technology
At present, both at home and abroad in oil well cementing, cement mortar is used for high temperature and pressure oil well, but uses fly ash float,
Compression strength is low, and cement slurry density change rate is big, and after the static solidification of cement mortar, appearance drop dehydration is excessive, test block shrinkage ratio mistake
Greatly, in addition, the poor toughness of test block, tension, anti-folding, shock resistance force difference, largely drop dehydration, cause blind hole.
The content of the invention
Using anorthite ore materials as palliative, add silica flour and alumina powder, improve well cementation test block resistance to compression,
Anti- folding, high temperature resistant, corrosion resistant performance, add foaming agent in cement mortar, form the slurries of expansion, reduce the density of slurries,
Reduce the pressure in shaft bottom, add the slurries in polyester fiber, test block toughness, anti-folding increase after grout cures, add graphite
The swollen resin of microballon and water imbibition, increases the mobility of slurries, and the test block shock resistance enhancing after grout cures, swollen resin is inhaled
Water reduces test block drop dehydration quantity, spawn is generated in hydration process, the basal body structure hole of cement mortar diminishes, shape
Into high vapour lock cement the well test block, reduce well cementation test block permeability, improve well cementation test block flow of pore resistance.
Its technical solution is：
Toughening type polyester fiber anorthite prepares the well cementation test block performance test of oil well water-impervious, comprises the following steps：
The first step：The preparation of anorthite closed pore hollow ceramic microspheres：Anorthite is first broken into 1000 by jaw crusher~
1500 μm of little particle, then 20~100 μm of spheroidal full particles are made by Raymond mill, spheroidal full particle is by carrying
The machine of liter enters distributing device, then is entered by distributing device in expansion sintering furnace, by 800~950 DEG C of expansions, 1000~1500 DEG C of surfaces
Melting is fired, cooling, and the anorthite closed pore hollow ceramic through 50~100 μm of wall thickness of pneumatic separating formation, 50~300 μm of particle diameter is micro-
Pearl；
Second step, the dispensing of water-impervious well cementation test block：By G grades of 40~50wt% of oil-well cement, 10~15wt% of superfine cement, particle diameter
For 50~300 μm of 25~35wt% of anorthite closed pore hollow ceramic microspheres, 5~7wt% of flyash of loss on ignition 1.1%, purity
99.9% 1.5~2wt% of calcium oxide, 0.5~1.0wt% of sodium sulphate, 1~5wt% of silica flour and 1.0~2wt% of alumina powder samplings, obtain
To mixture, the sum of the percentage by weight of above component is 100%, and activated silica, aluminium and G a grade oil-well cement, which react, generates water
Change calcium silicates spawn and other gels, the basal body structure hole of cement mortar diminish, form high vapour lock well cementation test block, reduce
The permeability of well cementation test block, improves the flow of pore resistance of well cementation test block, improves test block heat resistance, calcium oxide aquation is anti-
Substantial amounts of heat should be discharged, improves the temperature of test block, G grades of oil-well cements of silica flour and alumina powder, which react, generates hydrated calcium silicate
Spawn and other gels, the basal body structure hole of cement mortar diminish, and form high vapour lock well cementation test block, reduce well cementation examination
The permeability of block, improve well cementation test block flow of pore resistance, strengthen test block fracture resistence force, anorthite main component CaO,
Al2O3、SiO2, high temperature resistant, the high pressure ability of raising well cementation test block；
The preparation of 3rd step, water-impervious well cementation test block toughness reinforcing slurries：Mixing is mixed to get by the percentage by weight sampling of second step
Material, mixture is stirred evenly, is sized mixing with 0.5~0.7 ratio of mud, wherein ash is mixture, adds mixture gross weight
For 0.2~0.5% foaming agent, foaming agent is one kind therein in aluminium powder cream, the compound of aluminium or ammonium hydrogen carbonate, is added
Foaming agent hydration reaction generates bubble, forms the slurries of expansion, reduces the density of slurries, forms high vapour lock well cementation test block, reduces
The permeability of well cementation test block, improves the flow of pore resistance of well cementation test block, with the increase of well cementation depth, high density slurry
Liquid, the bottom of test block pressure increase, easily cause oil well cementing test block weightlessness collapse, section fault rupture, cause oil well infiltration, collapse
Side；
The preparation of the anti-folding slurries of water-impervious well cementation test block：The terylene that mixture gross weight is 5~8% will be added in the slurries of preparation
Fiber, by roller rotary spreading, realizes uniform stirring, polyester fiber has the guarantor that modulus is high, intensity is high, elasticity is good, good
Shape and heat resistance, add the slurries of polyester fiber, and the test block pull resistance after grout cures is good, fold resistance enhancing；
4th step, water-impervious well cementation test block mobility slurries preparation, will the 3rd step prepare slurries in add after nodularization
Particle diameter is 20~50 μm of graphite microbeads, and addition is 1~3% graphite microbeads of second step mixture weight, then adds the
The swollen resin of 0.5~1.0% water imbibition of two step mixture weight, stirs evenly, increases the mobility of slurries, grout cures
Test block shock resistance, toughness enhancing afterwards, the shrinking percentage of swollen resin water suction test block is low, reduces test block drop dehydration quantity, slurries
Density in 0.8~1.2g/cm3；
5th step, testing performance index：
A, the measure of expansion slurry flow rate：Take the 4th step to prepare slurries, pour into slurries flowing speedometer, observe and record slurry
The distance of movement in the flow rate of liquid, i.e. unit interval；
B, the volume density change rate experiment of test block：4th step is prepared into slurries, pours into one group of three pieces of length and width, high respectively 53mm*
In 53mm*53mm die trials, conserved respectively in the water-bath curing box of 52 DEG C of constant temperature 24 it is small when, 48 it is small when, 96 it is small when, after the demoulding
When immersion 1 is small in cold water, the test block after solidification is put into the volume density change rate experiment that test block is carried out on forcing press, test block
Volume density change rate is less than 0.02%, and the porosity of test block is low, and permeability is poor；
C, the bleed experiment of test block：The slurries prepared are poured into die trial, die trial is suspended among beaker, beaker mouth hermetic bag
Sealing, slurries take out die trial after test block is frozen into from beaker, weigh the weight that moisture is separated out in beaker, observe slurry
Condition, if layering, i.e., homogeneity, the test block vertical section Density Distribution after solidification are uniform；
D, water-impervious performance test：Slurries prepared by the 4th step are taken to pour into water-impervious analogue experiment installation, antiseepage Fluid Dynamics are real
Experiment device includes base, central tube, outer tube, top cover labyrinth, lower sealing cover, well-illuminated glass, special high-pressure pressurized equipment, in
Heart pipe runs through outer tube, and center pipe diameter has a plurality of specifications, between 10~200 centimetres of internal diameter, central tube and between form annular space, will
Wherein, central tube and outer tube are respectively equipped with micropore for the slurries injection of expansion, filter screen are equipped with outer tube, top cover labyrinth is close with
Capping is made of central tube and the outer seal of tube, special high-pressure pressurized equipment high-pressure pump, pressurized tank and button, as needed simulation
Oil well depth, sets the value of digital pressure gauge, and from the pressurization of pressurization hole, pressurization scope opens switch button, height from 10~350MPa
Body of calming the anger enters central tube interior sealing intracavitary through piping, and when reaching the value of digital pressure gauge setting, constant pressure is after 30 minutes, observation
The quantity of dehydration is oozed in bottom in well-illuminated glass, drops the scope of fluid loss in 10~50mL/30min, dropping the quantity of dehydration is
Weigh the most important performance indicator of water-impervious.
The present invention has the following advantages.
1st, using the slurries of expansion, the density of slurries is reduced, so as to reduce the pressure in shaft bottom.
2nd, polyester fiber has the conformality and heat resistance that modulus is high, intensity is high, elasticity is good, good, adds polyester fiber
Slurries, test block pull resistance after grout cures is good, fold resistance enhancing.
3rd, activated silica, aluminium and G a grade oil-well cement, which react, generates hydrated calcium silicate gel shape material and other gels, water
The basal body structure hole of mud diminishes, and forms high vapour lock well cementation test block, reduces the permeability of well cementation test block, improves well cementation examination
The flow of pore resistance of block.
Brief description of the drawings
Fig. 1 is the test platform structure schematic diagram of the water-impervious performance test of the embodiment of the present invention.
1, base 2 wherein in figure, lower sealing cover 3, well-illuminated glass 4, filter screen 5, outer tube 6, central tube 7,
Digital pressure gauge 8, top cover labyrinth 9, pressurized tank.
Embodiment
Embodiment 1.
Toughening type polyester fiber anorthite prepares the well cementation test block performance test of oil well water-impervious, comprises the following steps：
The first step：The preparation of anorthite closed pore hollow ceramic microspheres：Anorthite jaw crusher is first broken into 1000 μm
Little particle, then 80 μm of spheroidal full particles are made by Raymond mill, spheroidal full particle enters distributing device by elevator,
Entered again by distributing device in expansion furnace, by 830 DEG C of expansions, 1200 DEG C fire, cooling, form 80 μm of wall thickness, 250 μm of particle diameter
Anorthite closed pore hollow ceramic microspheres.
Second step, the dispensing of water-impervious well cementation test block：It is by G grades of oil-well cement 40wt%, superfine cement 15wt%, particle diameter
250 μm of anorthite ore closed pore hollow ceramic microspheres 28wt%, the flyash 7wt% of loss on ignition 1.1%, 99.9% calcium oxide of purity
2wt%, sodium sulphate 1.0wt%, silica flour 5wt% and alumina powder 2wt% samplings, obtain mixture, the percentage by weight of above component
The sum of be 100%, activated silica, aluminium and G a grade oil-well cement, which react, generates hydrated calcium silicate gel shape material and other gels,
The basal body structure hole of cement mortar diminishes, and forms high vapour lock well cementation test block, reduces the permeability of well cementation test block, improve well cementation
The flow of pore resistance of test block, improves test block heat resistance.
The preparation of 3rd step, water-impervious well cementation test block dilatant slurry：It is mixed to get by the percentage by weight sampling of second step
Mixture, mixture is stirred evenly, and is sized mixing with 0.5 ratio of mud, wherein ash is mixture, adding mixture gross weight is
0.2% foaming agent, foaming agent are aluminium powder cream, add hydration reaction generation bubble after aluminium powder cream, form the slurries of expansion, reduce
The density of slurries, forms high vapour lock well cementation test block, reduces the permeability of well cementation test block, improves the flow of pore of well cementation test block
Resistance, with well cementation depth increase, the bottom of test block pressure increase, easily cause oil well cementing test block weightlessness collapse, section
Fault rupture, causes oil well infiltration, landslide, the preparation of the anti-folding slurries of water-impervious well cementation test block：Mixing will be added in the slurries of preparation
Expect the polyester fiber that gross weight is 8%, by roller rotary spreading, realize uniform stirring, add the slurries of polyester fiber, slurries
The enhancing of test block fold resistance, toughness increase, anti-folding, pull resistance enhancing after solidification.
4th step, water-impervious well cementation test block mobility slurries preparation, will the 3rd step prepare slurries in add pass through ball
Particle diameter is 15 μm of graphite solid microbeads after change, and addition is 2% graphite solid microbeads of second step mixture weight, is added
The swollen resin of 1.0% water imbibition of second step mixture weight, stirs evenly, and increases the mobility of slurries, after grout cures
Test block shock resistance strengthens, and swollen resin water suction reduces test block drop dehydration quantity, and the density of slurries is in 0.9g/cm3。
5th step, testing performance index.
A, the measure of expansion slurry flow rate：Take the 4th step to prepare slurries, pour into slurries flowing speedometer, observe and remember
The flow rate of slurries is recorded, the distance of movement in the unit interval.
B, the volume density change rate experiment of test block：4th step is prepared into slurries, pouring into one group of three pieces of length and widths, height is respectively
In 53mm*53mm*53mm die trials, conserved respectively in the water-bath curing box of 52 DEG C of constant temperature 24 it is small when, 48 it is small when, 96 it is small when, take off
When immersion 1 is small in cold water after mould, the test block after solidification is put into the volume density change rate experiment that test block is carried out on forcing press, examination
The volume density change rate of block is less than 0.02%, and the porosity of test block is low, and permeability is poor.
C, the bleed experiment of test block：The slurries prepared are poured into die trial, die trial is suspended among beaker, and beaker mouth is with close
Envelope seals, and slurries take out die trial after test block is frozen into from beaker, weighs the weight that moisture is separated out in beaker, slurries are not
Layering, the test block vertical section Density Distribution after solidification is uniform, i.e. homogeneity.
D, water-impervious performance test：Slurries prepared by the 4th step are taken to pour into water-impervious analogue experiment installation, water-impervious mould
Draft experiment device includes base 1, central tube 6, outer tube 5, top cover labyrinth 8, lower sealing cover 2, well-illuminated glass 3, special high-pressure
Pressurized equipment, central tube 6 run through outer tube 5, and 6 diameter of central tube has plurality of specifications, 50 centimetres of internal diameter, between central tube 6 and outer tube 5
Annular space is formed, the slurries of expansion are injected into annular space, central tube 6 and outer tube 5 are respectively equipped with micropore, filter screen are equipped with outer tube 5
4, top cover labyrinth 8 and lower sealing cover 2 seal central tube 6 and outer tube 5, and special high-pressure pressurized equipment is by high-pressure pump, 9 and of pressurized tank
Button forms, simulation oil well depth as needed, adjusts the value of digital pressure gauge 7, and from the pressurization of pressurization hole, pressurize 200MPa, beats
Switch button is driven, gases at high pressure enter 6 interior sealing intracavitary of central tube through piping, observed after 30 minutes in well-illuminated glass 3
The quantity of dehydration is oozed, fluid loss is in 20mL/30min.
Claims (1)
1. toughening type polyester fiber anorthite prepares the well cementation test block performance test of oil well water-impervious, comprise the following steps：
The first step, the dispensing of water-impervious well cementation test block：By G grades of 40~50wt% of oil-well cement, 10~15wt% of superfine cement, particle diameter
For 50~300 μm of 25~35wt% of anorthite ore closed pore hollow ceramic microspheres, 5~7wt% of flyash of loss on ignition 1.1%, purity
99.9% 1.5~2wt% of calcium oxide, 0.5~1.0wt% of sodium sulphate, 1~5wt% of silica flour and 1.0~2wt% of alumina powder samplings, obtain
To mixture, the sum of the percentage by weight of above component is 100%, the preparation of anorthite closed pore hollow ceramic microspheres：First calcium is grown
Stone is broken into 1000~1500 μm of little particle by jaw crusher, then by Raymond mill 20~100 μm of spheroidals to be made solid
Particle, spheroidal full particle enter distributing device by elevator, then are entered by distributing device in expansion sintering furnace, by 800~
950 DEG C of expansions, 1000~1500 DEG C of melt surfaces are fired, cooling, through pneumatic separating formed 50~100 μm of wall thickness, particle diameter 50~
300 μm of anorthite closed pore hollow ceramic microspheres；
The preparation of second step, water-impervious well cementation test block dilatant slurry：Mixing is mixed to get by the percentage by weight sampling of the first step
Material, mixture is stirred evenly, is sized mixing with 0.5~0.7 ratio of mud, and ash is mixture, adds mixture gross weight as 0.2
~0.5% foaming agent, adds foaming agent hydration reaction generation bubble, forms the slurries of expansion, reduces the density of slurries；
The preparation of 3rd step, water-impervious well cementation test block toughness reinforcing slurries：Mixture gross weight is added in slurries prepared by second step
For 5~8% polyester fiber, by roller rotary spreading, uniform stirring is realized, add the slurries of polyester fiber, after grout cures
Test block pull resistance is good, fold resistance enhancing；
4th step, water-impervious well cementation test block shock resistance slurries preparation, will the 3rd step prepare slurries in add after nodularization
Particle diameter is 20~50 μm of graphite microbeads, and addition is 1~3% graphite microbeads of first step mixture weight, then adds the
The swollen resin of 0.5~1.0% water imbibition of one step mixture weight, stirs evenly, increases the mobility of slurries, grout cures
Test block shock resistance enhancing afterwards, swollen resin water suction reduce test block drop dehydration quantity；
5th step, water-impervious performance test：Slurries prepared by the 4th step are taken to pour into water-impervious analogue experiment installation, water-impervious mould
Draft experiment device includes base（1）, central tube（6）, outer tube（5）, top cover labyrinth（8）, lower sealing cover（2）, well-illuminated glass
（3）, special high-pressure pressurized equipment, central tube passes through（6）Wear outer tube（5）, central tube（6）Diameter has plurality of specifications, central tube（6）With
Between form annular space, by the injection of the slurries of expansion wherein, central tube（6）And outer tube（5）Micropore is respectively equipped with, in outer tube（5）On
Equipped with filter screen（4）, top cover labyrinth（8）And lower sealing cover（2）By central tube（6）And outer tube（5）Sealing, special high-pressure pressurization are set
For by high-pressure pump, pressurized tank（9）With button composition, digital pressure gauge（7）, simulation oil well depth as needed, sets numeral pressure
Power table（7）Value, open switch button, gases at high pressure enter central tube through piping（6）Interior sealing intracavitary, reaches digital pressure
Adjust table（7）During the value of setting, constant pressure observes well-illuminated glass after 30 minutes（3）In ooze the quantity of dehydration.
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Application publication date: 20180508 |