CN102851017A - Viscous-elastic clean fracturing fluid containing erucic acid betaines - Google Patents
Viscous-elastic clean fracturing fluid containing erucic acid betaines Download PDFInfo
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- CN102851017A CN102851017A CN2012102908962A CN201210290896A CN102851017A CN 102851017 A CN102851017 A CN 102851017A CN 2012102908962 A CN2012102908962 A CN 2012102908962A CN 201210290896 A CN201210290896 A CN 201210290896A CN 102851017 A CN102851017 A CN 102851017A
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Abstract
The invention discloses a viscous-elastic clean fracturing fluid containing erucic acid betaines. The viscous-elastic clean fracturing fluid containing erucic acid betaines has unique viscoelasticity, a unique gel-forming mechanism, a unique gel-breaking mechanism, excellent rheological properties and excellent sand-carrying performances and produces small damage on a storage layer. The viscous-elastic clean fracturing fluid containing erucic acid betaines is characterized by comprising one or more erucic acid betaines, one or more cationic surfactants, one or more anionic surfactants, one or more non-erucic acid betaine ampholytic surfactants, one or more inorganic acids, organic acids, inorganic salts and acylates, one or more lower alcohols and water. The viscous-elastic clean fracturing fluid containing erucic acid betaines has good rheological properties and can be used at a temperature more than 90 DEG C.
Description
Technical field
The present invention relates to a kind of Viscoelastic Surfactant-based Fracturing Fluid, particularly relate to a kind of Viscoelastic Surfactant-based Fracturing Fluid that contains the erucic acid trimethyl-glycine.
Background technology
Petrofracturing referred to as formation fracturing or pressure break, is the Technology of oil reservoir seepage characteristic of growing up the forties in 20th century-transform, and is an important process measure of well production increment, water injection well stimulation.It is to utilize higher discharge capacity and pressure, will contain under the non newtonian high viscosity fracturing fluid Injection Well of high density propping agent, makes seam and extends vee crack at zone of interest with realization.After fracturing liquid rubber-breaking returns row, just can form one or more supporting crack with high flow conductivity.The fracturing technique that nineteen forty-seven occurs has become the production practice of standard, has surpassed 800,000 wells to frac job quantity in 1981, and to 1988, the operation sum was developed to more than 1,000,000 wells time, and approximately 35% ~ 40% of drilled well in modern age number has carried out waterfrac treatment.25% ~ 30% of american petroleum reserves reach the economic exploitation condition by pressure break.Increase by 13 * 10 in the North America by pressure break
9m
3Prospective oil.In China, more and more many Oilfield using waterfrac treatments improve the augmented injection ability of producing capacity and the water injection well of Oil/gas Well, have obtained obvious effect.
Use of the fracturing fluid purpose that two aspects are arranged: one provides enough viscosity, uses the effect of waterpower wedge to form the crack and makes it to extend, and carry and lay fracturing propping agents in the crack along journey; Moreover after pressure break finished, the broken glue of the rapid decomposition of fracturing liquid was to low viscosity, guarantee most of fracturing fluid recovery (backflow) to ground with the purification crack.
Desirable fracturing liquid should have sufficiently high viscosity when job execution, simultaneously frictional resistance should not be too large, and can become low viscosity fluid and realize the fully row of returning any pollution and injury not being caused in the stratum in post-fracturing certain hour.
Clean fracturing fluid can effectively solve conventional fracturing liquid (natural phant fracturing fluid, Mierocrystalline cellulose fracturing liquid, synthetic polymer hydrofracturing fluid) in the row's of returning process because the very big injury that broken glue does not thoroughly cause the hydrocarbon-bearing pool rate of permeation.
Viscoelastic Surfactant-based Fracturing Fluid has following advantage with conventional polymeric objects system ratio: the oil drilling zone has higher osmotic pressure; Lower stratum and formation damage; Has high viscosity recovery rate after the pressure break; Enzyme or oxygenant have been eliminated to the reduction of viscosity; Easily aquation reaches optimum viscosity faster.
Summary of the invention
The purpose of this invention is to provide a kind of Viscoelastic Surfactant-based Fracturing Fluid.This fracturing liquid has unique rheological property, such as shear thinning behavior, visco-elasticity and excellent viscosity-temperature characteristics, also have simultaneously good take grittiness can and leak-off control.
The objective of the invention is to realize by following composition: a kind of Viscoelastic Surfactant-based Fracturing Fluid that contains the erucic acid trimethyl-glycine is characterized in that:
This Viscoelastic Surfactant-based Fracturing Fluid comprises following composition:
(1) contains one or more erucic acid trimethyl-glycines;
(2) can contain one or more cats products;
(3) can contain one or more anion surfactants;
(4) can contain one or more non-erucic acid betaine type amphoteric surfac-tants;
(5) contain one or more mineral acids, organic acid, organic acid salt, inorganic salt or its combination;
(6) contain one or more low-carbon alcohol;
(7) water.
In the above-mentioned composition, described erucic acid trimethyl-glycine is selected from following structure:
R wherein
1, R
2And R
3It is the straight chain saturated alkyl of 1 ~ 4 carbon; N is 2 ~ 5 natural number; M is 3 or 4.
In the above-mentioned composition, described cats product includes, but are not limited to following material: the cetyl trimethyl ammonium halide, hexadecyl dihydroxy ethyl ammonium halide, the octadecyl trimethyl-ammonium halide, octadecyl methyl dihydroxy ethyl ammonium halide, the oil base trimethyl-ammonium halide, oil base methyl dihydroxy ethyl ammonium halide, the eicosyl trimethyl-ammonium halide, eicosyl methyl dihydroxy ethyl ammonium halide, mustard base trimethyl-ammonium halide, mustard ylmethyl dihydroxy ethyl ammonium halide, mountain Yu base trimethyl-ammonium halide, mountain Yu ylmethyl dihydroxy ethyl ammonium halide, tetracosa carbon-9-thiazolinyl trimethyl-ammonium halide, tetracosa carbon-9-thiazolinyl methyl dihydroxy ethyl ammonium halide, tetracosa carbon base trimethyl-ammonium halide, tetracosa carbon ylmethyl dihydroxy ethyl ammonium halide, double hexadecyl dimethyl ammonium halide, two octadecyl dimethyl ammonium halides, two oil base dimethyl ammonium halides, two 20 carbon back dimethyl ammonium halides, two eicosylene base dimethyl ammonium halides, two mustard base dimethyl ammonium halides, two mountain Yu base dimethyl ammonium halides, two tetracosa carbons-9-thiazolinyl dimethyl ammonium halide, two tetracosa carbon base dimethyl ammonium halides etc.
In the above-mentioned composition, described anion surfactant includes but not limited to following material: sodium alkyl benzene sulfonate, alkenyl sulphonate, alkylsulfonate, alpha-sulfo list carboxylic salt, amino acid salts, oleyl sulfate, octadecyl vitriol, eicosyl vitriol, eicosylene base vitriol, mustard base vitriol, docosyl sulfate, savoy base vitriol, tetracosa carbon thiazolinyl vitriol, tetracosyl vitriol, oleate soap, stearate soap, eicosanoic acid soap, arachidonic acid soap, erucic acid soap, behenic acid soap, Selacholeic acid soap, lignoceric acid soap etc.
In the above-mentioned composition, described non-erucic acid betaine type amphoteric surfac-tant includes but not limited to following material: amine hydroxybenzene propyl-dimethyl amine oxide, stearic amide propyl-dimethyl amine oxide, eicosanoic acid amido propyl dimethyl oxidation amine, arachidonic acid amido propyl dimethyl oxidation amine, erucicamide propyl-dimethyl amine oxide, behenic acid amido propyl dimethyl oxidation amine, Selacholeic acid amido propyl dimethyl oxidation amine, lignoceric acid amido propyl dimethyl oxidation amine, amine hydroxybenzene propyl group dihydroxy ethyl amine oxide, stearic amide propyl group dihydroxy ethyl amine oxide, eicosanoic acid amido propyl dihydroxy ethyl amine oxide, arachidonic acid amido propyl dihydroxy ethyl amine oxide, erucicamide propyl group dihydroxy ethyl amine oxide, behenic acid amido propyl dihydroxy ethyl amine oxide, Selacholeic acid amido propyl dihydroxy ethyl amine oxide, lignoceric acid amido propyl dihydroxy ethyl amine oxide, oil-based imidazoline class amphoterics, imidazoline-based stearyl class amphoterics, peanut base imidazolines amphoterics, peanut alkenyl imidazoline class amphoterics, mustard base imidazolines amphoterics, mountain Yu base imidazolines amphoterics, neural basic imidazolines amphoterics, wood tar oil base imidazolines amphoterics, the amine hydroxybenzene CAB, amine hydroxybenzene propyl hydroxy sultaine, amine hydroxybenzene propyl group dihydroxy ethyl trimethyl-glycine, amine hydroxybenzene propyl group dihydroxy ethyl hydroxyl sulfo betaine, the stearic amide CAB, stearic amide propyl hydroxy sultaine, stearic amide propyl group dihydroxy ethyl trimethyl-glycine, stearic amide propyl group dihydroxy ethyl hydroxyl sulfo betaine, the eicosanoic acid amido propyl betaine, eicosanoic acid amido propyl hydroxyl sulfo betaine, eicosanoic acid amido propyl dihydroxy ethyl trimethyl-glycine, eicosanoic acid amido propyl dihydroxy ethyl hydroxyl sulfo betaine, the arachidonic acid amido propyl betaine, arachidonic acid amido propyl hydroxyl sulfo betaine, arachidonic acid amido propyl dihydroxy ethyl trimethyl-glycine, arachidonic acid amido propyl dihydroxy ethyl hydroxyl sulfo betaine, the behenic acid amido propyl betaine, behenic acid amido propyl hydroxyl sulfo betaine, behenic acid amido propyl dihydroxy ethyl trimethyl-glycine, behenic acid amido propyl dihydroxy ethyl hydroxyl sulfo betaine, the Selacholeic acid amido propyl betaine, Selacholeic acid amido propyl hydroxyl sulfo betaine, Selacholeic acid amido propyl dihydroxy ethyl trimethyl-glycine, Selacholeic acid amido propyl dihydroxy ethyl hydroxyl sulfo betaine, the lignoceric acid amido propyl betaine, lignoceric acid amido propyl hydroxyl sulfo betaine, lignoceric acid amido propyl dihydroxy ethyl trimethyl-glycine, lignoceric acid amido propyl dihydroxy ethyl hydroxyl sulfo betaine.
In the above-mentioned composition, described mineral acid, organic acid, organic acid salt, inorganic salt include but not limited to following material: hydrofluoric acid, hydrochloric acid, Hydrogen bromide, formic acid, acetic acid, propionic acid, oxalic acid, benzene sulfonate, Whitfield's ointment, salicylate, benzoate, phthalate, tosilate, hydroxyl naphthalene monocarboxylic acid salt, naphthalenesulfonate, sodium-chlor, Repone K, calcium chloride, ammonium chloride, Trolamine salicylate, trimethylammonium ammonia chloride etc.
In the above-mentioned composition, described low-carbon alcohol is carbon number less than 4 monohydroxy-alcohol or polyvalent alcohol, such as methyl alcohol, ethanol, propyl alcohol, butanols, Virahol, ethylene glycol, glycerol, 1,2-propylene glycol, 1, ammediol, 1,3 butylene glycol, 2,3-butanediol, 2-butanols, isopropylcarbinol etc.
In the above-mentioned composition, the content of described erucic acid trimethyl-glycine accounts for 0.3 ~ 40% of clean fracturing fluid weight.
In the above-mentioned composition, the content of described cats product accounts for 0 ~ 10% of clean fracturing fluid weight.
In the above-mentioned composition, the content of described anionic polymer accounts for 0 ~ 5% of clean fracturing fluid weight.
In the above-mentioned composition, described non-erucic acid betaine type amphoteric surfac-tant content accounts for 0 ~ 10% of clean fracturing fluid weight.
In the above-mentioned composition, the content of described organic acid, organic salt, inorganic salt or its combination accounts for 0.1 ~ 10% of clean fracturing fluid weight.
In the above-mentioned composition, described low-carbon alcohol content accounts for 3 ~ 30% of clean fracturing fluid weight.
In the above-mentioned composition, the content of described water accounts for more than 50% of clean fracturing fluid weight.
Can find out from composition characteristic of the present invention, Viscoelastic Surfactant-based Fracturing Fluid of the present invention has the following advantages:
(1) have unique visco-elasticity and rheological property: viscoelastic surfactant forms vermiform, bar-shaped or columned micella in solution, along with increasing of micella mutual entanglement occuring, has formed the macromolecular space of similar cross-linked polymer reticulated structure.Clean fracturing fluid of the present invention has the shear thinning performance under shearing action, after external force removed, system visco-elasticity was recovered.
(2) unique one-tenth glue mechanism and rubber breaker reason: in salt medium, the electric charge of the gegenion in the system (such as salicylate, halogen ion etc.) shielding system micella and water termination, and strongly associate with the system molecule, make spherical micelle develop into flexible bar-shaped or vermiculate glues, when clean fracturing fluid concentration reaches threshold concentration, the high visco-elasticity of micella formation entangled to each other space reticulated structure, thus realize propping agent carry and make seam.Fracturing liquid enters the stratum, be diluted to finite concentration by local water after, system visco-elasticity forfeiture; Or contact with hydrocarbon (oil or gas) in the stratum, affect system band point environment, destroy the micella state, thereby lose viscosity.
(3) unique grittiness energy of taking: the selection space of discharge capacity is larger during pressure break, be conducive to control the longitudinal extension in crack, be conducive to form longer supporting crack, under lower viscosity, just has good prop-carrying capacity, save sand, also reduced the size of required net pressure;
(4) little to reservoir damage: the injury rate to rock core only is 3 ~ 5%, fracture permeability can remain on 90%, and the row of returning leads can be up to 90%, inorganic salt in the system can effectively prevent the clay water-swellable, and the erucic acid trimethyl-glycine in the system also has preferably clay stabilization effect.
(5) unique filtration property: conventional fracturing liquid can produce residue at the crack wall, forms filter cake, and clean fracturing fluid can not form filter cake on the reservoir rock surface, and its leak-off rate is temporal evolution not.At zone permeability less than 5 * 10
-3μ m
2Situation under, clean fracturing fluid is difficult to enter the reservoir pore space venturi, in the high permeability reservoir, clean fracturing fluid can be compatible with fluid loss agent, improves of the fracturing fluid service efficiency.
Description of drawings
Fig. 1 is the viscosity temperature characteristic figure that contains the Viscoelastic Surfactant-based Fracturing Fluid of erucic acid trimethyl-glycine.
Embodiment
The present invention is described further below by embodiment.
Embodiment 1
Viscoelastic Surfactant-based Fracturing Fluid comprises following composition: erucicamide CAB 2%, mustard ylmethyl dihydroxy ethyl ammonium chloride 1%, sodium salicylate 2%, Repone K 5%, methyl alcohol 15%, water 75%.Its viscosity temperature characteristic is seen Fig. 1.
Embodiment 2
Viscoelastic Surfactant-based Fracturing Fluid comprises following composition: erucicamide propyl group hydroxy sulfo lycine 1%, octadecyl vitriol 0.2%, erucicamide propyl-dimethyl amine oxide 1%, sodium salicylate 2%, ethylene glycol 10%, water 85.8%.Its viscosity temperature characteristic is seen Fig. 1.
Embodiment 3
Viscoelastic Surfactant-based Fracturing Fluid comprises following composition: erucicamide hydroxypropyl sultaine 4%, trimethylammonium ammonia chloride 1%, isopropylcarbinol 8%, water 87%.Its viscosity temperature characteristic is seen Fig. 1.
Claims (14)
1. Viscoelastic Surfactant-based Fracturing Fluid that contains the erucic acid trimethyl-glycine is characterized in that this Viscoelastic Surfactant-based Fracturing Fluid comprises following composition:
(1) contains one or more erucic acid trimethyl-glycines;
(2) can contain one or more cats products;
(3) can contain one or more anion surfactants;
(4) can contain one or more non-erucic acid betaine type amphoteric surfac-tants;
(5) contain one or more mineral acids, organic acid, inorganic salt, organic acid salt or its combination;
(6) contain one or more low-carbon alcohol;
(7) water.
2. Viscoelastic Surfactant-based Fracturing Fluid according to claim 1 is characterized in that described erucic acid trimethyl-glycine is selected from following structure:
R1 wherein, R2 and R3 are the straight chain saturated alkyl of 1 ~ 4 carbon; N is 2 ~ 5 natural number; M is 3 or 4.
3. Viscoelastic Surfactant-based Fracturing Fluid according to claim 1 is characterized in that contained cats product includes, but are not limited to following material: the cetyl trimethyl ammonium halide, hexadecyl dihydroxy ethyl ammonium halide, the octadecyl trimethyl-ammonium halide, octadecyl methyl dihydroxy ethyl ammonium halide, the oil base trimethyl-ammonium halide, oil base methyl dihydroxy ethyl ammonium halide, the eicosyl trimethyl-ammonium halide, eicosyl methyl dihydroxy ethyl ammonium halide, mustard base trimethyl-ammonium halide, mustard ylmethyl dihydroxy ethyl ammonium halide, mountain Yu base trimethyl-ammonium halide, mountain Yu ylmethyl dihydroxy ethyl ammonium halide, tetracosa carbon-9-thiazolinyl trimethyl-ammonium halide, tetracosa carbon-9-thiazolinyl methyl dihydroxy ethyl ammonium halide, tetracosa carbon base trimethyl-ammonium halide, tetracosa carbon ylmethyl dihydroxy ethyl ammonium halide, double hexadecyl dimethyl ammonium halide, two octadecyl dimethyl ammonium halides, two oil base dimethyl ammonium halides, two 20 carbon back dimethyl ammonium halides, two eicosylene base dimethyl ammonium halides, two mustard base dimethyl ammonium halides, two mountain Yu base dimethyl ammonium halides, two tetracosa carbons-9-thiazolinyl dimethyl ammonium halide, two tetracosa carbon base dimethyl ammonium halides etc.
4. Viscoelastic Surfactant-based Fracturing Fluid according to claim 1 is characterized in that contained anionic surface
Promoting agent includes but not limited to following material: sodium alkyl benzene sulfonate, alkenyl sulphonate, alkylsulfonate, alpha-sulfo list carboxylic salt, amino acid salts, oleyl sulfate, octadecyl vitriol, eicosyl vitriol, eicosylene base vitriol, docosyl sulfate, savoy base vitriol, tetracosa carbon thiazolinyl vitriol, tetracosyl vitriol, oleate soap, stearate soap, the eicosanoic acid soap, the arachidonic acid soap, the erucic acid soap, the behenic acid soap, the Selacholeic acid soap, lignoceric acid soap etc.
5. Viscoelastic Surfactant-based Fracturing Fluid according to claim 1 is characterized in that contained non-erucic acid beet
Alkali type amphoterics includes but not limited to following material: amine hydroxybenzene propyl-dimethyl amine oxide, stearic amide propyl-dimethyl amine oxide, eicosanoic acid amido propyl dimethyl oxidation amine, arachidonic acid amido propyl dimethyl oxidation amine, erucicamide propyl-dimethyl amine oxide, behenic acid amido propyl dimethyl oxidation amine, Selacholeic acid amido propyl dimethyl oxidation amine, lignoceric acid amido propyl dimethyl oxidation amine, amine hydroxybenzene propyl group dihydroxy ethyl amine oxide, stearic amide propyl group dihydroxy ethyl amine oxide, eicosanoic acid amido propyl dihydroxy ethyl amine oxide, arachidonic acid amido propyl dihydroxy ethyl amine oxide, erucicamide propyl group dihydroxy ethyl amine oxide, behenic acid amido propyl dihydroxy ethyl amine oxide, Selacholeic acid amido propyl dihydroxy ethyl amine oxide, lignoceric acid amido propyl dihydroxy ethyl amine oxide, oil-based imidazoline class amphoterics, imidazoline-based stearyl class amphoterics, peanut base imidazolines amphoterics, peanut alkenyl imidazoline class amphoterics, mustard base imidazolines amphoterics, mountain Yu base imidazolines amphoterics, neural basic imidazolines amphoterics, wood tar oil base imidazolines amphoterics, the amine hydroxybenzene CAB, amine hydroxybenzene propyl hydroxy sultaine, amine hydroxybenzene propyl group dihydroxy ethyl trimethyl-glycine, amine hydroxybenzene propyl group dihydroxy ethyl hydroxyl sulfo betaine, the stearic amide CAB, stearic amide propyl hydroxy sultaine, stearic amide propyl group dihydroxy ethyl trimethyl-glycine, stearic amide propyl group dihydroxy ethyl hydroxyl sulfo betaine, the eicosanoic acid amido propyl betaine, eicosanoic acid amido propyl hydroxyl sulfo betaine, eicosanoic acid amido propyl dihydroxy ethyl trimethyl-glycine, eicosanoic acid amido propyl dihydroxy ethyl hydroxyl sulfo betaine, the arachidonic acid amido propyl betaine, arachidonic acid amido propyl hydroxyl sulfo betaine, arachidonic acid amido propyl dihydroxy ethyl trimethyl-glycine, arachidonic acid amido propyl dihydroxy ethyl hydroxyl sulfo betaine, the behenic acid amido propyl betaine, behenic acid amido propyl hydroxyl sulfo betaine, behenic acid amido propyl dihydroxy ethyl trimethyl-glycine, behenic acid amido propyl dihydroxy ethyl hydroxyl sulfo betaine, the Selacholeic acid amido propyl betaine, Selacholeic acid amido propyl hydroxyl sulfo betaine, Selacholeic acid amido propyl dihydroxy ethyl trimethyl-glycine, Selacholeic acid amido propyl dihydroxy ethyl hydroxyl sulfo betaine, the lignoceric acid amido propyl betaine, lignoceric acid amido propyl hydroxyl sulfo betaine, lignoceric acid amido propyl dihydroxy ethyl trimethyl-glycine, lignoceric acid amido propyl dihydroxy ethyl hydroxyl sulfo betaine.
6. Viscoelastic Surfactant-based Fracturing Fluid according to claim 1 is characterized in that described mineral acid, organic acid, inorganic salt, organic acid salt include but not limited to following material: hydrofluoric acid, hydrochloric acid, Hydrogen bromide, formic acid, acetic acid, propionic acid, oxalic acid, benzene sulfonate, Whitfield's ointment, salicylate, benzoate, phthalate, tosilate, hydroxyl naphthalene monocarboxylic acid salt, naphthalenesulfonate, sodium-chlor, Repone K, calcium chloride, ammonium chloride, Trolamine salicylate, trimethylammonium ammonia chloride etc.
7. Viscoelastic Surfactant-based Fracturing Fluid according to claim 1, it is characterized in that described low-carbon alcohol is carbon number less than 4 monohydroxy-alcohol or polyvalent alcohol, such as methyl alcohol, ethanol, propyl alcohol, butanols, Virahol, ethylene glycol, glycerol, 1,2-propylene glycol, 1, ammediol, 1,3-butyleneglycol, 2,3-butanediol, 2-butanols, isopropylcarbinol etc.
8. Viscoelastic Surfactant-based Fracturing Fluid according to claim 1 is characterized in that described erucic acid beet alkali content accounts for 0.3 ~ 40% of clean fracturing fluid weight.
9. Viscoelastic Surfactant-based Fracturing Fluid according to claim 1 is characterized in that described cationic surfactant concentration accounts for 0 ~ 10% of clean fracturing fluid weight.
10. Viscoelastic Surfactant-based Fracturing Fluid according to claim 1 is characterized in that described anionic polymer content accounts for 0 ~ 5% of clean fracturing fluid weight.
11. Viscoelastic Surfactant-based Fracturing Fluid according to claim 1 is characterized in that described non-erucic acid betaine type amphoteric surfac-tant content accounts for 0 ~ 10% of clean fracturing fluid weight.
12. Viscoelastic Surfactant-based Fracturing Fluid according to claim 1 is characterized in that the content of described mineral acid, organic acid, inorganic salt, organic salt or its combination accounts for 0.1 ~ 20% of clean fracturing fluid weight.
13. Viscoelastic Surfactant-based Fracturing Fluid according to claim 1 is characterized in that described low-carbon alcohol content accounts for 3 ~ 30% of clean fracturing fluid weight.
14. Viscoelastic Surfactant-based Fracturing Fluid according to claim 1 is characterized in that the content of described water accounts for more than 50% of clean fracturing fluid weight.
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