CN106566488A - Polymer gel for well killing and preparing method and application of polymer gel - Google Patents
Polymer gel for well killing and preparing method and application of polymer gel Download PDFInfo
- Publication number
- CN106566488A CN106566488A CN201610963885.4A CN201610963885A CN106566488A CN 106566488 A CN106566488 A CN 106566488A CN 201610963885 A CN201610963885 A CN 201610963885A CN 106566488 A CN106566488 A CN 106566488A
- Authority
- CN
- China
- Prior art keywords
- polymer gel
- kill
- job
- mass percent
- reinforcing agent
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 229920000642 polymer Polymers 0.000 title claims abstract description 59
- 238000000034 method Methods 0.000 title abstract description 5
- UMGDCJDMYOKAJW-UHFFFAOYSA-N thiourea Chemical compound NC(N)=S UMGDCJDMYOKAJW-UHFFFAOYSA-N 0.000 claims abstract description 22
- 239000012744 reinforcing agent Substances 0.000 claims abstract description 21
- 229910052901 montmorillonite Inorganic materials 0.000 claims abstract description 19
- 229920002401 polyacrylamide Polymers 0.000 claims abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 13
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Natural products NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229920002261 Corn starch Polymers 0.000 claims abstract description 10
- WYYQVWLEPYFFLP-UHFFFAOYSA-K chromium(3+);triacetate Chemical compound [Cr+3].CC([O-])=O.CC([O-])=O.CC([O-])=O WYYQVWLEPYFFLP-UHFFFAOYSA-K 0.000 claims abstract description 9
- 239000008120 corn starch Substances 0.000 claims abstract description 9
- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical compound O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 claims description 15
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical group C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 12
- 239000011734 sodium Substances 0.000 claims description 12
- 229910052708 sodium Inorganic materials 0.000 claims description 12
- 238000003756 stirring Methods 0.000 claims description 11
- 238000002360 preparation method Methods 0.000 claims description 8
- 230000015572 biosynthetic process Effects 0.000 claims description 6
- 230000007062 hydrolysis Effects 0.000 claims description 4
- 238000006460 hydrolysis reaction Methods 0.000 claims description 4
- -1 organo montmorillonite Chemical compound 0.000 claims description 4
- 229920003023 plastic Polymers 0.000 claims description 4
- 239000004033 plastic Substances 0.000 claims description 4
- 238000009775 high-speed stirring Methods 0.000 claims description 3
- KEAYESYHFKHZAL-UHFFFAOYSA-N Sodium Chemical compound [Na] KEAYESYHFKHZAL-UHFFFAOYSA-N 0.000 claims 1
- 239000003795 chemical substances by application Substances 0.000 claims 1
- 238000007789 sealing Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract 1
- 229910017059 organic montmorillonite Inorganic materials 0.000 abstract 1
- 239000000499 gel Substances 0.000 description 46
- 239000012530 fluid Substances 0.000 description 10
- 239000007789 gas Substances 0.000 description 10
- 238000005553 drilling Methods 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 6
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 5
- 239000003431 cross linking reagent Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 238000001879 gelation Methods 0.000 description 4
- 239000008399 tap water Substances 0.000 description 4
- 235000020679 tap water Nutrition 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 2
- KKCBUQHMOMHUOY-UHFFFAOYSA-N Na2O Inorganic materials [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000005341 cation exchange Methods 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 239000011651 chromium Substances 0.000 description 2
- 229910052804 chromium Inorganic materials 0.000 description 2
- 229910052681 coesite Inorganic materials 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 229910052593 corundum Inorganic materials 0.000 description 2
- 229910052906 cristobalite Inorganic materials 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000000741 silica gel Substances 0.000 description 2
- 229910002027 silica gel Inorganic materials 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 229910052682 stishovite Inorganic materials 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N titanium dioxide Inorganic materials O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 229910052905 tridymite Inorganic materials 0.000 description 2
- 229910001845 yogo sapphire Inorganic materials 0.000 description 2
- ZUGAOYSWHHGDJY-UHFFFAOYSA-K 5-hydroxy-2,8,9-trioxa-1-aluminabicyclo[3.3.2]decane-3,7,10-trione Chemical compound [Al+3].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O ZUGAOYSWHHGDJY-UHFFFAOYSA-K 0.000 description 1
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 1
- 235000019759 Maize starch Nutrition 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 150000001408 amides Chemical class 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- 229920001222 biopolymer Polymers 0.000 description 1
- 239000001768 carboxy methyl cellulose Substances 0.000 description 1
- 235000010948 carboxy methyl cellulose Nutrition 0.000 description 1
- 239000008112 carboxymethyl-cellulose Substances 0.000 description 1
- 235000013339 cereals Nutrition 0.000 description 1
- 238000012669 compression test Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000012024 dehydrating agents Substances 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 230000002706 hydrostatic effect Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000010977 jade Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 229940100486 rice starch Drugs 0.000 description 1
- 210000000582 semen Anatomy 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 235000010265 sodium sulphite Nutrition 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 239000000230 xanthan gum Substances 0.000 description 1
- 229920001285 xanthan gum Polymers 0.000 description 1
- 229940082509 xanthan gum Drugs 0.000 description 1
- 235000010493 xanthan gum Nutrition 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/02—Well-drilling compositions
- C09K8/03—Specific additives for general use in well-drilling compositions
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/02—Well-drilling compositions
- C09K8/03—Specific additives for general use in well-drilling compositions
- C09K8/035—Organic additives
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/40—Spacer compositions, e.g. compositions used to separate well-drilling from cementing masses
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/42—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells
- C09K8/424—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells using "spacer" compositions
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/42—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells
- C09K8/426—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells for plugging
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/42—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells
- C09K8/44—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells containing organic binders only
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/60—Compositions for stimulating production by acting on the underground formation
- C09K8/84—Compositions based on water or polar solvents
- C09K8/86—Compositions based on water or polar solvents containing organic compounds
- C09K8/88—Compositions based on water or polar solvents containing organic compounds macromolecular compounds
- C09K8/887—Compositions based on water or polar solvents containing organic compounds macromolecular compounds containing cross-linking agents
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2208/00—Aspects relating to compositions of drilling or well treatment fluids
- C09K2208/12—Swell inhibition, i.e. using additives to drilling or well treatment fluids for inhibiting clay or shale swelling or disintegrating
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Geology (AREA)
- Physics & Mathematics (AREA)
- Geochemistry & Mineralogy (AREA)
- Fluid Mechanics (AREA)
- Environmental & Geological Engineering (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses polymer gel for well killing and a preparing method and application of the polymer gel. The polymer gel for well killing is composed of partially hydrolyzed polyacrylamide, chromium acetate, thiourea, a structure reinforcing agent and water, wherein the polymer gel for well killing comprises, by mass, 1%-4% of the partially hydrolyzed polyacrylamide, 0.1%-0.4% of the chromium acetate, 0.05%-0.2% of the thiourea, 1%-7% of the structure reinforcing agent and the balance water. The structure reinforcing agent is Na-montmorillonite or corn starch or organic montmorillonite. The polymer gel for well killing is high in pressure resisting strength, has good adhesion force and a good sealing effect on a casing pipe and can be applied to under-balanced well completion of an oil deposit or a gas deposit.
Description
Technical field
The present invention relates to oil gas field is drilled well field, more particularly to a kind of kill-job polymer gel and its preparation side
Method and application.
Background technology
Oilfield exploitation procedure needs drilling well, completion, workover treatment, and conventional well killing fluid is easily missed, big to formation damage.
In order to solve practical site problems, in recent years oil worker was not to Low Damage and anti-leakage well killing fluid, gel leakage stopping technology, pressed
Well operations, underbalance are drilled the technologies such as well and are studied, and above-mentioned technology respectively has pluses and minuses.Wherein, under balance pressure drilling, is also claimed
For negative pressure drilling well, refer to that drilling fluid acts on shaft bottom hydrostatic pressure, circulate pressure drop and raised platform around a well back pressure is less than in drilling process
The pressure of formation pore, the drilling well skill that formation fluid controlledly flows into pit shaft and again controls this fluid circulation to ground
Art.Under balance pressure drilling is in protection oil and gas reservoir, raising productivity of hydrocarbon, reduction reservoir damage, raising bit speed and sends out in time
The aspects such as existing low pressure, low osmoticing oil-gas layer are significant.Generally risen using installation casing valve and no killing well both at home and abroad at present
Lower boring device is realizing insufficient balance well completion, but the technology using casing valve and equipment are using difficulty is big, high cost, risk are high.
Polymer gel kill-job technology is a kind of using high-molecular gel well killing fluid isolation pit shaft oil gas, equilibrium strata pressure
Realize the technology of insufficient balance well completion operation.For insufficient balance well completion polymer gel system by polymer host, cross-linking agent with
Additive is constituted, and according to scheduled rate predetermined injection position is injected into, and forms the polymer gel glue with tridimensional network
Plug.In order to improve the performance of polymer gel well killing fluid, nano inoganic particle is often filled in polymer gel, form nanometer and answer
Close gel.Certain pressure reduction is resisted in the wellbore using the intensity and excellent adhesion of modified post-polymerization thing gel；Using solidifying
The Solid Mechanics characteristic isolation of glue, seal shaft oil gas, and prevent the oil gas in reservoir from outwards escaping, it is ensured that insufficient balance well completion
The safety of operation is carried out.In prior art, the compressive resistance of polymer gel is relatively low, it is difficult to meet wanting for higher strata pressure
Ask；And, gel cost of the prior art is also higher.
The content of the invention
The purpose of the present invention is for above-mentioned problems of the prior art, there is provided a kind of kill-job polymer gel
And preparation method and application, the polymer gel compressive resistance is high, there is excellent adhesion and sealing function to sleeve pipe.
To achieve these goals, the technical solution used in the present invention is as follows：
A kind of kill-job polymer gel, by partially hydrolyzed polyacrylamide (PHPA), chromium acetate, thiourea, structure reinforcing agent and water
Composition；Wherein, in terms of the gross mass of the kill-job polymer gel, the mass percent of partially hydrolyzed polyacrylamide (PHPA) is
1%～4%, the mass percent of chromium acetate (cross-linking agent) be 0.1%～0.4%, thiourea mass percent be 0.05%～
0.2%th, the mass percent of structure reinforcing agent is 1%～7%；Balance of water；
The structure reinforcing agent is sodium-based montmorillonite (NaMMT), corn starch or organo montmorillonite (OMMT).
The mass percent of the partially hydrolyzed polyacrylamide (PHPA) is specially 1.5%～3%, more specifically 2%；The second
The mass percent of sour chromium (cross-linking agent) is specially 0.15%～0.25%, more specifically 0.2%；The quality percentage of the thiourea
Number is specially 0.1%～0.2%, more specifically 0.2%.
The mass percent of the structure reinforcing agent is specially 5%-7%, more specifically 1%, 3%, 5% or 7%.
When the structure reinforcing agent is sodium-based montmorillonite, its mass percent is 7%；The structure reinforcing agent is Semen Maydiss shallow lake
During powder, its mass percent is 5%.
The degree of hydrolysis of the partially hydrolyzed polyacrylamide (PHPA) be 5%-20%, specially 20%；Molecular weight be 4,000,000～
18000000, specially 8,000,000.
The chemical analysis of the sodium-based montmorillonite are as follows：In terms of mass fraction, 67.16%SiO2, 20.60%Al2O3,
4.11%MgO, 3.21%CaO, 2.20%Fe2O3, 1.47%Na2O, 0.92%K2O, 0.17%TiO2And 0.16% other
Material.
The cation exchange capacity of the sodium-based montmorillonite is 112mmol/100g.
The grain diameter of the corn starch is 12.10 μm～17.07 μm.
The water is tap water.
A kind of preparation method of kill-job polymer gel, comprises the steps：
Under agitation, structure reinforcing agent is added in water, is disperseed using ultrasonic oscillator, existed with high-speed stirring mixer
Stir under 400～600r/min rotating speeds；Then thiourea, partially hydrolyzed polyacrylamide (PHPA) are sequentially added, fully second is added after dissolving
Sour chromium, plastic.
The time of the stirring is 30min～120min.
Application of the kill-job polymer gel in oil reservoir or gas reservoir insufficient balance well completion.
The oil reservoir or gas reservoir are low-temperature reservoir or low temperature gas reservoir.
The formation temperature of the low-temperature reservoir or low temperature gas reservoir is 30～70 DEG C.
Advantages of the present invention is as follows：
(1) present invention is greatly improved due to adding sodium-based montmorillonite, corn starch or organo montmorillonite structure reinforcing agent
The compressive resistance and compression performance of polymer gel.The kill-job that the present invention the is provided resistance to pressure of polymer gel pluralgel
Degree is up to 0.54MPam-1, compressive strength is up to 8.5111MPa, and elastic modelling quantity is up to 0.0081MPa.
(2) kill-job of the invention polymer gel also has excellent adhesion.
(3) gelation time of the kill-job polymer gel that the present invention is provided is in 1.5h or so, 70 DEG C of the gel for being formed
Lower 30 days interior-heat good stabilities, there is stronger adhesion and sealing function to sleeve pipe.
(4) after completion terminates, the kill-job of the present invention utilizes itself excellent broken colloidality energy with polymer gel, using nitrogen
Or clear water is capable of achieving residual liquid, scrap rubber all rows of returning.
(5) compare with xanthan gum of the prior art (biopolymer), the partial hydrolysiss polypropylene used by the present invention
The price of amide is cheaper so that the polymer gel of the present invention has more preferable economic benefit for oil field.
Description of the drawings
Fig. 1 is the structural representation of pressure tester of the present invention.
Specific embodiment
The present invention is further described in detail with reference to specific embodiment, the embodiment for being given is only for explaining
The bright present invention, rather than in order to limit the scope of the present invention.
Experimental technique in following embodiments, if no special instructions, is conventional method.
Material used, reagent etc. in following embodiments, if no special instructions, commercially obtain.
The degree of hydrolysis of the partially hydrolyzed polyacrylamide (PHPA) used in following embodiments is 20%, and molecular weight is 8,000,000
Sodium-based montmorillonite is bought in Zhejiang Feng Hong new materials company limited, and its chemical composition is as follows：In terms of mass fraction,
67.16%SiO2, 20.60%Al2O3, 4.11%MgO, 3.21%CaO, 2.20%Fe2O3, 1.47%Na2O, 0.92%K2O,
0.17%TiO2And 0.16% other materials；Cation exchange capacity is 112mmol/100g.
Corn starch is bought in Hebei Hua Chen starch company limited, and its particle size range is about in 12.10～17.07 μ
m。
Organo montmorillonite is bought in Zhejiang Feng Hong new materials company.
Water is tap water.
Embodiment 1
Weigh in the balance and take appropriate tap water and be added in beaker.Beaker is placed under agitator, the bottom of stirring rod is from beaker
Bottom 1cm or so.DW-3 type digital displays motor stirrer switch is opened, mixing speed is adjusted and is about 400r/min, make water form whirlpool,
Press formula again and add a certain amount of structure reinforcing agent, 30min is disperseed using ultrasonic oscillator, high-speed stirring mixer with
600r/min stirs 30min.Weigh thiourea, partially hydrolyzed polyacrylamide (PHPA) with analytical balance again to be quickly and evenly added to respectively
In whirlpool.Continue to stir, until polymer is completely dispersed (typically take stirring 4h).Stop stirring, place and pour into after 24h totally
Reagent bottle in it is stand-by.Polymer base fluid is placed after 24h, weighs a certain amount of polymer base fluid in clean beaker, and unlatching is stirred
Bar is mixed, polymer base fluid is stirred with 400 turns per minute of speed, then add respective amount cross-linking agent (chromium acetate) solution, stirring
After mix homogeneously, it is placed in 70 DEG C of constant temperature ovens and reacts, plastic；Prepared kill-job polymer gel.
Wherein, the formula and its compressive resistance of kill-job polymer gel are as shown in table 1.
The formula and its compressive resistance of the kill-job polymer gel of table 1
Embodiment 2
Its preparation method is with embodiment 1；Difference is in the formula of kill-job polymer gel, structure reinforcing agent is sodium
Base montmorillonite, its content is respectively 1%, 3%, 5%, 7%.Table 2 is respectively the different kill-job of sodium-based montmorillonite content and uses with table 3
The compressive resistance and compression performance data of polymer gel.
The polymer gel compressive resistance data of the different montmorillonite contents of table 2
As shown in Table 2, adding sodium-based montmorillonite can significantly improve the compressive resistance of polymer gel, and compressive resistance
Increase with the increase of montmorillonite content；When sodium-based montmorillonite addition is 7%, the compressive resistance highest of pluralgel reaches
0.54MPa·m-1。
The polymer gel compression test data of the different montmorillonite contents of table 3
From table 3, when the compressive strength highest of the polymer gel that sodium-based montmorillonite addition is 7% formation, reach
8.5111MPa；Its elastic modelling quantity highest, reaches 0.0081MPa.
Embodiment 3
Its preparation method is with embodiment 1；Difference is in the formula of kill-job polymer gel, structure reinforcing agent is jade
Rice starch, its content is respectively 1%, 3%, 5%, 7%.Table 4 is the different kill-job polymer gel of Maize Starch Content
Compressive resistance.
Impact of the corn starch consumption of table 4 to polymer gel compressive resistance
As shown in Table 4, when corn starch consumption 5%, the compressive resistance of polymer gel is up to 0.40MPam-1。
The present invention polymer gel gelation time 30 days at 1.5h or so, 70 DEG C of the gel for being formed in it is thermally-stabilised
Property is good.
Comparative example 1
Appropriate tap water is added in container, DW-3 type digital displays motor stirrer switch is opened, mixing speed is adjusted
About 400r/min, makes water form whirlpool, then sequentially adds 2% (mass percent) partially hydrolyzed polyacrylamide (PHPA), and 0.2%
(mass percent) sodium sulfite (antioxidant), 1% (mass percent) carboxymethyl cellulose (anti-dehydrating agent), 2.5%
(mass percent) aluminium oxide (structure reinforcing agent)；Fully 0.2% aluminium citrate (cross-linking agent) is added after dissolving, determined after plastic
The compressive resistance of resulting polymers gel, its compressive resistance is 0.057MPam-1。
In embodiment 1～3 and comparative example 1, using the pressure tester of the general N80 pipes processing in oil field, as shown in figure 1,
The compressive resistance of polymer gel is by the device to test.Pressure tester include nitrogen cylinder, surge tank, six-way valve, gelling vessel,
Temperature-controlling system, temperature measurer, pressure transducer and computer.Air relief valve is sequentially provided with connecting line between nitrogen cylinder and surge tank
And threeway, the 3rd mouth connection constant-flux pump of threeway；The connecting line of surge tank and six-way valve is provided with silica gel；Six-way valve respectively with
Pressure gauge, silica gel, pressure transducer and gelling vessel connection, gelling vessel connects respectively temperature-controlling system and temperature measurer；Pressure is passed
Sensor is connected to computer.
In experiment, height of the polymer gel in N80 sleeve pipes is 70cm.Polymer gel compressive resistance test condition：
Temperature 30-70 DEG C.
In embodiment 2, the compressive strength of polymer gel is tested using electronic universal tester, test condition：Temperature 25
DEG C, compression speed is 4mm/min, and shearing stress is 1N/mm2, intensity is according to initial cross sectional calculating.
It should be appreciated that for those of ordinary skills, can according to the above description be improved or be converted,
And all these modifications and variations should all belong to the protection domain of claims of the present invention.
Claims (10)
1. a kind of kill-job polymer gel, by partially hydrolyzed polyacrylamide (PHPA), chromium acetate, thiourea, structure reinforcing agent and water group
Into；Wherein, in terms of the gross mass of the kill-job polymer gel, the mass percent of partially hydrolyzed polyacrylamide (PHPA) is 1%
～4%, the mass percent of chromium acetate be 0.1%～0.4%, thiourea mass percent be 0.05%～0.2%, structure increase
The mass percent of strong agent is 1%～7%；Balance of water；
The structure reinforcing agent is sodium-based montmorillonite, corn starch or organo montmorillonite.
2. kill-job polymer gel according to claim 1, it is characterised in that：The partially hydrolyzed polyacrylamide (PHPA)
Mass percent is 2%；The mass percent of the chromium acetate is 0.2%；The mass percent of the thiourea is 0.2%.
3. kill-job polymer gel according to claim 1, it is characterised in that：The quality percentage of the structure reinforcing agent
Number is 5%～7%.
4. kill-job polymer gel according to claim 1, it is characterised in that：The structure reinforcing agent is that sodio illiteracy is de-
When native, its mass percent is 7%；When the structure reinforcing agent is corn starch, its mass percent is 5%.
5. kill-job polymer gel according to claim 1, it is characterised in that：The partially hydrolyzed polyacrylamide (PHPA)
Degree of hydrolysis is 5%-20%, and molecular weight is 4,000,000～18,000,000.
6. the preparation method of the kill-job polymer gel any one of Claims 1 to 5, comprises the steps：Stirring
Mix down, structure reinforcing agent is added in water, disperseed using ultrasonic oscillator, with high-speed stirring mixer in 400～600r/
Stir under min rotating speeds；Then thiourea, partially hydrolyzed polyacrylamide (PHPA) are sequentially added, fully chromium acetate, plastic is added after dissolving.
7. preparation method according to claim 6, it is characterised in that：The time of the stirring is 30min-120min.
8. the kill-job polymer gel any one of Claims 1 to 5 in oil reservoir or gas reservoir insufficient balance well completion should
With.
9. application according to claim 8, it is characterised in that：The oil reservoir or gas reservoir are low-temperature reservoir or low temperature gas reservoir.
10. application according to claim 9, it is characterised in that：The formation temperature of the low-temperature reservoir or low temperature gas reservoir is
30～70 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610963885.4A CN106566488B (en) | 2016-11-04 | 2016-11-04 | Kill-job polymer gel and the preparation method and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610963885.4A CN106566488B (en) | 2016-11-04 | 2016-11-04 | Kill-job polymer gel and the preparation method and application thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106566488A true CN106566488A (en) | 2017-04-19 |
| CN106566488B CN106566488B (en) | 2019-07-26 |
Family
ID=58536084
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610963885.4A Active CN106566488B (en) | 2016-11-04 | 2016-11-04 | Kill-job polymer gel and the preparation method and application thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106566488B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107459291A (en) * | 2017-09-05 | 2017-12-12 | 重庆卡美伦科技有限公司合川分公司 | A kind of bentonite of environmentally friendly antiseepage and preparation method thereof |
| CN111205836A (en) * | 2020-02-09 | 2020-05-29 | 西南石油大学 | Preparation method and degradation prediction method of recyclable high-density liquid rubber plug |
| CN111410943A (en) * | 2020-03-16 | 2020-07-14 | 中国石油天然气股份有限公司 | Composite gel well killing rubber plug capable of being rapidly gelatinized at high temperature and being weighted and preparation method thereof |
| CN111484653A (en) * | 2020-05-11 | 2020-08-04 | 中国石油大学(北京) | Xanthan gum composite gel for underbalanced drilling and preparation method and application thereof |
| US11015109B2 (en) * | 2019-10-16 | 2021-05-25 | Southwest Petroleum University | Particulate profile control agent self-adaptive to size of formation pore throat and preparation method thereof |
| CN114539997A (en) * | 2022-02-24 | 2022-05-27 | 大庆汇联技术开发有限公司 | Low-cost, clean and solid-free gel for killing well and preparation method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103525385A (en) * | 2013-09-26 | 2014-01-22 | 中国石油集团川庆钻探工程有限公司 | Polyacrylamide strong gel for well control and preparation method thereof |
-
2016
- 2016-11-04 CN CN201610963885.4A patent/CN106566488B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103525385A (en) * | 2013-09-26 | 2014-01-22 | 中国石油集团川庆钻探工程有限公司 | Polyacrylamide strong gel for well control and preparation method thereof |
Non-Patent Citations (3)
| Title |
|---|
| 刘洪发等: "蒙脱土纳米复合凝胶与接触基质碱的粘附力测量", 《中国化学会第30届学术年会摘要集-第三十一分会 胶体与界面化学》 * |
| 孙斐斐等: "聚丙烯酰胺-Cr3+凝胶的结构与性能关系", 《石油学报(石油加工)》 * |
| 宋飞飞等: "压井用疏水缔合水凝胶的制备及其自愈合性能研究", 《2015年全国高分子学术论文报告会》 * |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107459291A (en) * | 2017-09-05 | 2017-12-12 | 重庆卡美伦科技有限公司合川分公司 | A kind of bentonite of environmentally friendly antiseepage and preparation method thereof |
| US11015109B2 (en) * | 2019-10-16 | 2021-05-25 | Southwest Petroleum University | Particulate profile control agent self-adaptive to size of formation pore throat and preparation method thereof |
| CN111205836A (en) * | 2020-02-09 | 2020-05-29 | 西南石油大学 | Preparation method and degradation prediction method of recyclable high-density liquid rubber plug |
| CN111410943A (en) * | 2020-03-16 | 2020-07-14 | 中国石油天然气股份有限公司 | Composite gel well killing rubber plug capable of being rapidly gelatinized at high temperature and being weighted and preparation method thereof |
| CN111410943B (en) * | 2020-03-16 | 2022-10-04 | 中国石油天然气股份有限公司 | Composite gel well killing rubber plug capable of being quickly gelatinized and weighted at high temperature and preparation method thereof |
| CN111484653A (en) * | 2020-05-11 | 2020-08-04 | 中国石油大学(北京) | Xanthan gum composite gel for underbalanced drilling and preparation method and application thereof |
| CN111484653B (en) * | 2020-05-11 | 2021-06-29 | 中国石油大学(北京) | Xanthan gum composite gel for underbalanced drilling and preparation method and application thereof |
| CN114539997A (en) * | 2022-02-24 | 2022-05-27 | 大庆汇联技术开发有限公司 | Low-cost, clean and solid-free gel for killing well and preparation method thereof |
| CN114539997B (en) * | 2022-02-24 | 2023-04-21 | 大庆汇联技术开发有限公司 | Gel for low-cost, clean and solid-free well killing and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106566488B (en) | 2019-07-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106566488A (en) | Polymer gel for well killing and preparing method and application of polymer gel | |
| CN106566491B (en) | A kind of starch/Nano-meter SiO_22Plural gel and the preparation method and application thereof | |
| CN104531109B (en) | Organic synthetic plugging granules for well drilling, and preparation method and application thereof | |
| CN104559974B (en) | A kind of drilling well organic synthesis flexible fragment sealing agent and its preparation method and application | |
| WO2015109917A1 (en) | Thickener for shale gas fracturing fluid, fracturing fluid and preparation method and use thereof | |
| CN1309798C (en) | Follow-drilling plugging agent and its preparation method and use | |
| NO329920B1 (en) | Concentrate for crosslinking polymers in aqueous solutions, fluid, and preparation of formate-containing fracturing fluid | |
| WO2014086068A1 (en) | Fracturing method of online continuous preparation based on liquid polymer | |
| CN103865514A (en) | Rapidly hydrated liquid guanidine gum and fracturing base fluid containing same | |
| CN107502189A (en) | A kind of novel aqueous asphalt coating composition and preparation method thereof | |
| CN108728057A (en) | A kind of drilling fluid nano-resin lotion sealing agent | |
| US3766986A (en) | Method of treating a well using a volatile hydrocarbon liquid | |
| CN106367043A (en) | Preparation method of high-temperature-resistant drilling fluid filtrate reducer | |
| CN110484226A (en) | Kill-job diverting agent and preparation method thereof | |
| CN110396398A (en) | Superhigh temperature oil base drilling fluid temperature control type curing agent and preparation method thereof | |
| CN110305644A (en) | A kind of drop misses the preparation and its application of flexible micelle flushing fluid | |
| AU2013230568B2 (en) | A method and apparatus for mixing, transporting, storing, and transferring thixotropic fluids in one container | |
| CN110144186A (en) | A kind of non-filling underfill and preparation method thereof | |
| CN109385258A (en) | A kind of modified brine workover fluid and preparation method thereof | |
| CN107418532A (en) | A kind of well cementation elasticator (elasticizer) and preparation method thereof and elastomeric isolation liquid | |
| CN103965859A (en) | Oilwell gemini surfactant fracturing fluid and preparation method thereof | |
| NO162674B (en) | CUTTING THICKNESS PREPARATION WITH POLYACRYLIC ACID. | |
| CN103881682B (en) | High temperature clay anti-swelling agent as well as preparation method and application thereof | |
| CN106589994B (en) | One kind containing attapulgite clay compounded type hydrate anticoagulant | |
| CN208757474U (en) | A kind of dispensation apparatus of profile control transfer drive medicament |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |