CN105062456A - Cross-linking agent, hydroxypropyl guanidine gum fracturing fluid system and preparation method of hydroxypropyl guanidine gum fracturing fluid system - Google Patents
Cross-linking agent, hydroxypropyl guanidine gum fracturing fluid system and preparation method of hydroxypropyl guanidine gum fracturing fluid system Download PDFInfo
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- CN105062456A CN105062456A CN201510502946.2A CN201510502946A CN105062456A CN 105062456 A CN105062456 A CN 105062456A CN 201510502946 A CN201510502946 A CN 201510502946A CN 105062456 A CN105062456 A CN 105062456A
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- 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
- C09K8/62—Compositions for forming crevices or fractures
- C09K8/66—Compositions based on water or polar solvents
- C09K8/68—Compositions based on water or polar solvents containing organic compounds
- C09K8/685—Compositions based on water or polar solvents containing organic compounds containing cross-linking agents
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- 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
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Abstract
The invention provides a cross-linking agent, a hydroxypropyl guanidine gum fracturing fluid system and a preparation method of the hydroxypropyl guanidine gum fracturing fluid system. The cross-linking agent comprises an A component and a B component, wherein the A component comprises borate, alkyl alkylol amine, a first organic solvent, a first inorganic solvent and an acidic pH modifier; the B component comprises an alkaline pH modifier; the weight ratio of the A component to the B component is (2: 7)-(1: 5). The cross-linking agent provided by the invention is adopted to prepare the fracturing fluid system, so that the formation damage is reduced, the cost of a fracturing fluid is reduced, the fracturing effect is improved, besides, the concentration of a thickening agent is decreased, and the fracturing fluid property is guaranteed.
Description
Technical field
The present invention relates to exploitation of oil-gas field field, in particular to a kind of linking agent, hydroxypropyl guar fracturing fluid system and preparation method thereof.
Background technology
Because the demand of Economic development to the energy increases day by day, effective exploitation low permeability reservoir has become the vital task of current production of hydrocarbons.Pressure break is as the effective well stimulation of one, and its proportion shared in oilfield exploitation procedure is more and more higher.Fracturing liquid be fluid ore deposit (gas, vapour, oil, fresh water, salt solution, hot water etc.) in recovery process, in order to obtain liquid used when high yield uses liquid conductive power (as waterpower etc.) fracturing methods.Effectively improve fracturing yield increasing effect to reach, improve the object of Oil & Gas Productivity and oil recovery rate, of the fracturing fluid selection is most important.
The key problem of fracturing fluid system is how under the prerequisite guaranteeing fracturing fluid property, reduces the injury of formation.Fracturing fluid system conventional at present has carboxymethyl fracturing fluid system, PEG fracturing fluid system, fiber fracturing liquid and hydroxypropyl guar fracturing liquid etc.Carboxymethyl guanidine glue and PEG fracturing liquid are restricted in endurance of cutting, cost etc., and the requirement of fiber fracturing liquid to fiber is higher, and cost is high, promote difficulty large.Existing hydroxypropyl guar fracturing liquid has the features such as good cross-linking properties, be thus subject to the favor of vast researcher, but existing hydroxypropyl guar fracturing liquid also exists some shortcomings, and particularly the injury of formation is comparatively large, cannot accomplish environmental friendliness.
Summary of the invention
Main purpose of the present invention is to provide a kind of linking agent, hydroxypropyl guar fracturing fluid system and preparation method thereof, cannot have good crush properties concurrently and formation injures little problem to solve existing hydroxypropyl fracturing fluid system.
To achieve these goals, the invention provides a kind of linking agent, linking agent comprises component A and B component; Wherein, component A comprises borate, alkyl alcoholamine, the first organic solvent, the first inorganic solvent and acidic ph modifier; B component comprises alkaline pH adjusting agent; And the weight ratio of component A and B component is 2:7 ~ 1:5.
Further, with parts by weight, component A comprises the borate of 15 ~ 30 parts, the alkyl alcoholamine of 4 ~ 9 parts, first organic solvent of 3 ~ 5 parts, the acidic ph modifier of first inorganic solvent of 51 ~ 76 parts and 2 ~ 5 parts.
Further, acidic ph modifier is weak acid, and preferred weak acid is selected from lactic acid and/or acetic acid.
Further, alkaline pH adjusting agent comprises the second organic solvent, alkali and water.
Further, with parts by weight, alkaline pH adjusting agent comprises the water of second organic solvent of 3 ~ 10 parts, the alkali of 13 ~ 25 parts and 65 ~ 84 parts.Preferably, the second organic solvent is selected from one or more in the group be made up of ethylene glycol, glycerol and propyl carbinol.
Further, alkali comprises organic bases and mineral alkali; Preferably, organic bases is selected from one or more in the group be made up of triethylene tetramine, tetraethylene pentamine and polyethylene polyamine; Preferably, mineral alkali is selected from one or more in the group be made up of sodium hydroxide, sodium carbonate, sodium bicarbonate, sodium hydrogen phosphate and SODIUM PHOSPHATE, MONOBASIC.
Further, borate is ten hydrated sodium borates.
Further, the first organic solvent is selected from one or more in the group be made up of toluene, m-xylene and p-Xylol.
Further, the first inorganic solvent is water.
Further, containing one or more hydroxyl in alkyl alcoholamine, and the carbonatoms in alkyl alcoholamine is C1 to C10; Preferably, alkyl alcoholamine is selected from one or more in the group be made up of Monoethanolamine MEA BASF, diethanolamine and trolamine.
Further, the second organic solvent is selected from one or more in the group be made up of ethylene glycol, glycerol and propyl carbinol.
The present invention provides a kind of hydroxypropyl guar fracturing fluid system on the other hand, and it comprises hydroxypropyl guar base fluid and above-mentioned linking agent.
The present invention provides a kind of preparation method of hydroxypropyl guar fracturing fluid system on the other hand, and this preparation method comprises: preparation component A: by borate, alkyl alcoholamine, the first organic solvent, and the first inorganic solvent and acidic ph modifier mixing, obtain component A; Preparation B component: B component comprises alkaline pH adjusting agent; Prepare fracturing fluid system: by weight 2 ~ 3:4, by component A and hydroxypropyl guar mixing, obtain mixed solution; Then press the weight ratio 2:7 ~ 1:5 of component A and B component, mixed solution is mixed with B component, obtains hydroxypropyl guar fracturing fluid system.
Apply linking agent of the present invention, can there is coordination reaction in the borate in component A and the alkyl alcoholamine containing hydroxyl, form a kind of coordination compound with ring texture.This title complex has stronger stability, and this is conducive to improving the thermotolerance of linking agent, shear restoration and flow conductivity.The carrying out adding the coordination reaction being conducive to promotion borate and alkyl alcoholamine of the first organic solvent.B component add the hydration the speed of viscosity increasement, the crosslinking time that are conducive to viscosifying agent in control fracturing liquid system, the simultaneously growth of anti-bacteria.The weight ratio of component A and B component is controlled in above-mentioned scope, be conducive to of the fracturing fluid pH to control in certain alkaline range, thus is conducive to the over-all properties of the fracturing fluid system improved containing above-mentioned linking agent.In addition, not containing transition metal in above-mentioned linking agent, thus to have formation injury little for linking agent provided by the invention, and level of residue is low, the good and low cost and other advantages of the feature of environmental protection.The reason of above several respects makes linking agent provided by the invention have good cross-linking properties, and cost is low, also makes the fracturing fluid system containing above-mentioned linking agent have the feature of good crush properties and the less injury of formation concurrently simultaneously.
Accompanying drawing explanation
The Figure of description forming a application's part is used to provide a further understanding of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 shows viscosity and the temperature graphic representation over time of hydroxypropyl guar fracturing fluid system obtained in the embodiment 4 provided of the present invention; And
Fig. 2 shows viscosity and the temperature graphic representation over time of hydroxypropyl guar fracturing fluid system obtained in the comparative example 3 provided of the present invention.
Embodiment
It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.The present invention is described in detail below in conjunction with embodiment.
As described by background technology, existing fracturing fluid system cannot have good cross-linking properties concurrently and formation injures little problem.In order to solve the problems of the technologies described above, the invention provides a kind of linking agent, it comprises component A and B component; Wherein, component A comprises borate, alkyl alcoholamine, the first organic solvent, the first inorganic solvent and acidic ph modifier, and B component comprises alkaline pH adjusting agent; And the weight ratio of component A and B component is 1:5 ~ 2:7.
Can there is coordination reaction in the borate in component A and the alkyl alcoholamine containing hydroxyl, form a kind of coordination compound with ring texture.This title complex has stronger stability, and this is conducive to improving the thermotolerance of linking agent, shear restoration and flow conductivity.The carrying out adding the coordination reaction being conducive to promotion borate and alkyl alcoholamine of the first organic solvent.B component add the hydration the speed of viscosity increasement, the crosslinking time that are conducive to viscosifying agent in control fracturing liquid system, the simultaneously growth of anti-bacteria.The weight ratio of component A and B component is controlled in above-mentioned scope, be conducive to of the fracturing fluid pH to control in certain alkaline range, thus is conducive to the over-all properties of the fracturing fluid system improved containing above-mentioned linking agent.In addition, not containing transition metal in above-mentioned linking agent, thus to have formation injury little for linking agent provided by the invention, and level of residue is low, the good and low cost and other advantages of the feature of environmental protection.The reason of above several respects makes linking agent provided by the invention have good cross-linking properties, and cost is low, also makes the fracturing fluid system containing above-mentioned linking agent have the feature of good crush properties and the less injury of formation concurrently simultaneously.
In above-mentioned linking agent, those skilled in the art can select the composition of component A.In a preferred embodiment, with parts by weight, component A comprises the acidic ph modifier of the borate of 15 ~ 30 parts, the alkyl alcoholamine of 4 ~ 9 parts, first organic solvent of 3 ~ 5 parts, first inorganic solvent of 51 ~ 76 parts and 2 ~ 5 parts.The content of composition each in component A is limited in above-mentioned scope, is conducive to improving further the thermotolerance of linking agent, shear restoration and flow conductivity.Simultaneously, each component controlled in above-mentioned scope with magnitude relation, when applying by the pH regulator of fracturing fluid system extremely more suitably scope, fracturing fluid system can also be made to have rate of crosslinking preferably, improves the avidity between polymkeric substance and linking agent and cross-linking effect simultaneously further.
In above-mentioned linking agent, the acidic ph modifier that this area is conventional can be adopted.In a preferred embodiment, acidic ph modifier is weak acid.Weak acid can form soda acid with alkaline pH adjusting agent and cushion right, is conducive to suppressing pH fluctuate the disadvantageous effect brought, thus is conducive to improving the stability of linking agent performance and contains the over-all properties of fracturing fluid system of above-mentioned linking agent.Preferably, weak acid includes but not limited to lactic acid and/or acetic acid.Above-mentioned weak acid cost is lower, and it is right easily to form soda acid buffering, thus is conducive to the over-all properties improving the stability of linking agent performance and the fracturing fluid system containing above-mentioned linking agent further.
In above-mentioned linking agent, the compound that alkaline pH adjusting agent can adopt this area conventional.In a preferred embodiment, alkaline pH adjusting agent comprises the second organic solvent, alkali and water.Alkaline pH adjusting agent can by the scope needed for the pH of linking agent modulation, and the second organic solvent is conducive to the consistency regulating alkali better simultaneously.
In above-mentioned linking agent, those skilled in the art can select the proportionlity of each component in alkaline pH adjusting agent.In a preferred embodiment, with parts by weight, alkaline pH adjusting agent comprises the water of second organic solvent of 3 ~ 10 parts, the alkali of 13 ~ 25 parts and 65 ~ 84 parts.The consumption of component each in alkaline pH adjusting agent is controlled the effect being conducive to playing better pH agent in above-mentioned scope.
In above-mentioned linking agent, the second organic solvent can adopt conventional organic solvent.In a preferred embodiment, the second organic solvent includes but not limited to one or more in the group be made up of ethylene glycol, glycerol and propyl carbinol.
In above-mentioned linking agent, the alkali that this area is conventional can be adopted.In a preferred embodiment, alkali comprises organic bases and mineral alkali.Use organic bases and mineral alkali to be conducive to the pH more leniently regulating fracturing fluid system simultaneously, thus be conducive to improving the crosslinked homogeneity of fracturing fluid system.
Preferably, organic bases includes but not limited to one or more in the group be made up of triethylene tetramine, tetraethylene pentamine and polyethylene polyamine; Alternatively, mineral alkali includes but not limited to one or more in the group be made up of sodium hydroxide, sodium carbonate, sodium bicarbonate, sodium hydrogen phosphate and SODIUM PHOSPHATE, MONOBASIC.Above-mentioned alkali wide material sources, and cheap and easy to get, adopt above-mentioned alkali to be conducive to reducing further the cost of linking agent.
In above-mentioned linking agent, those skilled in the art can select the kind of borate, alkyl alcoholamine, the first organic solvent and the first inorganic solvent.In a preferred embodiment, borate includes but not limited to ten hydrated sodium borates; In a preferred embodiment, the first organic solvent includes but not limited to one or more in the group be made up of toluene, m-xylene, p-Xylol and p-Xylol.In a preferred embodiment, the first inorganic solvent is water.Above-mentioned raw materials wide material sources, and cheap and easy to get, adopt above-mentioned alkali to be conducive to further reducing the cost of linking agent.
In above-mentioned linking agent, the hydroxyl hydramine that this area is conventional can be adopted.In a preferred embodiment, containing one or more hydroxyl in alkyl alcoholamine, and the carbonatoms in alkyl alcoholamine is C1 to C10.Hydroxy radical content in alkyl alcoholamine is higher, and this is conducive to improving the organic content of organic coordination that borate and hydroxyl are formed, thus is conducive to the over-all properties of raising cross linker system.
In a preferred embodiment, alkyl alcoholamine includes but not limited to one or more in the group be made up of Monoethanolamine MEA BASF, diethanolamine and trolamine.Select abovementioned alkyl hydramine and borate to form coordination compound, be conducive to the stability strengthening above-mentioned coordination compound further, and then improve its over-all properties further.
In a preferred embodiment, the second organic solvent includes but not limited to one or more in the group be made up of ethylene glycol, glycerol and propyl carbinol.Above-mentioned raw materials wide material sources, and cheap and easy to get, adopt above-mentioned alkali to be conducive to further reducing the cost of linking agent.
The present invention provides a kind of hydroxypropyl guar fracturing fluid system on the other hand, and it comprises hydroxypropyl guar base fluid and above-mentioned linking agent.
Can there is coordination reaction in the borate in component A and the alkyl alcoholamine containing hydroxyl, form a kind of coordination compound with ring texture.This title complex has stronger stability, and this is conducive to improving the thermotolerance of linking agent, shear restoration and flow conductivity.The carrying out adding the coordination reaction being conducive to promotion borate and alkyl alcoholamine of the first organic solvent.B component add the hydration the speed of viscosity increasement, the crosslinking time that are conducive to viscosifying agent in control fracturing liquid system, the simultaneously growth of anti-bacteria.The weight ratio of component A and B component is controlled in above-mentioned scope, be conducive to of the fracturing fluid pH to control in certain alkaline range, thus is conducive to the over-all properties of the fracturing fluid system improved containing above-mentioned linking agent.In addition, not containing transition metal in above-mentioned linking agent, thus to have formation injury little for linking agent provided by the invention, and level of residue is low, the good and low cost and other advantages of the feature of environmental protection.The reason of above several respects makes linking agent provided by the invention have good cross-linking properties, and cost is low, also makes the fracturing fluid system containing above-mentioned linking agent have the feature of good crush properties and the less injury of formation concurrently simultaneously.
The present invention provides a kind of preparation method of hydroxypropyl guar fracturing fluid system on the other hand, and preparation method comprises: preparation component A: borate, alkyl alcoholamine, the first inorganic solvent and acidic ph modifier are mixed, obtain component A; Preparation B component: B component comprises alkaline pH adjusting agent; Prepare fracturing fluid system: by weight 2 ~ 3:4, by component A and hydroxypropyl guar mixing, obtain mixed solution; Then press the weight ratio 2:7 ~ 1:5 of component A and B component, mixed solution is mixed with B component, obtains above-mentioned hydroxypropyl guar fracturing fluid system.
Can there is coordination reaction in the borate in component A and the alkyl alcoholamine containing hydroxyl, form a kind of coordination compound with ring texture.This title complex has stronger stability, and this is conducive to improving the thermotolerance of linking agent, shear restoration and flow conductivity.The carrying out adding the coordination reaction being conducive to promotion borate and alkyl alcoholamine of the first organic solvent.B component add the hydration the speed of viscosity increasement, the crosslinking time that are conducive to viscosifying agent in control fracturing liquid system, the simultaneously growth of anti-bacteria.The weight ratio of component A and B component is controlled in above-mentioned scope, be conducive to of the fracturing fluid pH to control in certain alkaline range, thus is conducive to the over-all properties of the fracturing fluid system improved containing above-mentioned linking agent.In addition, not containing transition metal in above-mentioned linking agent, thus to have formation injury little for linking agent provided by the invention, and level of residue is low, the good and low cost and other advantages of the feature of environmental protection.The reason of above several respects makes linking agent provided by the invention have good cross-linking properties, and cost is low, also makes the fracturing fluid system containing above-mentioned linking agent have the feature of good crush properties and the less injury of formation concurrently simultaneously.
Effect of the present invention is further described below in conjunction with embodiment.
The concrete component of the linking agent that embodiment 1-7 and comparative example 1-3 provides is in table 1.
Table 1
Adopt the linking agent of embodiment 1-7 and comparative example 1 to 3 to prepare hydroxypropyl guar fracturing fluid system, concrete preparation method is as follows:
Preparation component A: borate, alkyl alcoholamine, the first organic solvent, the first inorganic solvent and acidic ph modifier are mixed, obtains component A;
Preparation B component: B component comprises alkaline pH adjusting agent;
Prepare fracturing fluid system: by weight for 3:4 is by component A and hydroxypropyl guar mixing, obtain mixed solution; Then press the predetermined proportion of component A and B component, above-mentioned mixed solution is mixed with B component, obtains above-mentioned hydroxypropyl guar fracturing fluid system.
The of the fracturing fluid performance of hydroxypropyl guar of the linking agent containing embodiment 1-7 and comparative example 1-3 is tested according to SY/T5107-2005 aqueous fracturing fluid method of evaluating performance.
Adopt HAAKERS6000 rheometer, under 100 DEG C of temperature condition, shearing rate 170s
-1after down cut 90min, as shown in Figure 1, in embodiment 4, the viscosity of fracturing fluid system is greater than 150mPa.s, and as shown in Figure 2, comparative example 3 fracturing liquid viscosity is about 50mPa.s, and this illustrates that the guanidine gum fracturing fluid temperature and shearing sustainability of the linking agent preparation of this invention is far superior to similar fracturing fluid system.
Containing the Evaluation results of the fracturing fluid system of linking agent in embodiment 1-7 and comparative example 1-3 in table 2.
Table 2
As can be seen from the above description, the above embodiments of the present invention achieve following technique effect: the level of residue in the fracturing fluid system use procedure that linking agent provided by the invention obtains obviously reduces, and the viscosity of concurrent fracturing liquid system also gets a promotion greatly.Above-mentioned data show, what make the adding of linking agent provided by the invention hydroxypropyl guar fracturing fluid system has good over-all properties, and level of residue is few simultaneously, and the injury of formation is less.
B (OH) in component A
- 4borate and can coordination reaction be there is containing polyhydric alkyl alcoholamine, form a kind of coordination compound with ring texture.This title complex has stronger stability, and this is conducive to improving the thermotolerance of linking agent, shear restoration and flow conductivity.The carrying out adding the coordination reaction being conducive to promotion borate and alkyl alcoholamine of the first organic solvent.Adding of weak acid can form acid-base buffer with the alkali in B component, is conducive to the stability improving pH in above-mentioned linking agent use procedure, thus improves the over-all properties of the fracturing fluid system containing above-mentioned linking agent further.The weight ratio of component A and B component is controlled in above-mentioned scope, be conducive to of the fracturing fluid pH to control in certain scope, thus is conducive to the over-all properties of the fracturing fluid system improved containing above-mentioned linking agent.In addition, linking agent provided by the invention has that formation injury is little, and level of residue is low, the good and low cost and other advantages of the feature of environmental protection.In oilfield exploitation procedure, the fracturing fluid system containing above-mentioned linking agent is adopted to be conducive to improving fracturing yield increasing effect, Oil & Gas Productivity and oilfield exploitation efficiency.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (13)
1. a linking agent, is characterized in that, described linking agent comprises component A and B component; Wherein, described component A comprises borate, alkyl alcoholamine, the first organic solvent, the first inorganic solvent and acidic ph modifier; Described B component comprises alkaline pH adjusting agent; And the weight ratio of described component A and described B component is 2:7 ~ 1:5.
2. linking agent according to claim 1, it is characterized in that, with parts by weight, described component A comprises the described borate of 15 ~ 30 parts, the described alkyl alcoholamine of 4 ~ 9 parts, described first organic solvent of 3 ~ 5 parts, described first inorganic solvent of 51 ~ 76 parts and the described acidic ph modifier of 2 ~ 5 parts.
3. linking agent according to claim 1 and 2, is characterized in that, described acidic ph modifier is weak acid, and preferred described weak acid is selected from lactic acid and/or acetic acid.
4. linking agent according to any one of claim 1 to 3, is characterized in that, described alkaline pH adjusting agent comprises the second organic solvent, alkali and water.
5. linking agent according to claim 4, is characterized in that, with parts by weight, described alkaline pH adjusting agent comprises described second organic solvent of 3 ~ 10 parts, the described alkali of 13 ~ 25 parts and the water of 65 ~ 84 parts;
Preferably, described second organic solvent is selected from one or more in the group be made up of ethylene glycol, glycerol and propyl carbinol.
6. the linking agent according to claim 4 or 5, is characterized in that, described alkali comprises organic bases and mineral alkali;
Preferably, described organic bases is selected from one or more in the group be made up of triethylene tetramine, tetraethylene pentamine and polyethylene polyamine;
Preferably, described mineral alkali is selected from one or more in the group be made up of sodium hydroxide, sodium carbonate, sodium bicarbonate, sodium hydrogen phosphate and SODIUM PHOSPHATE, MONOBASIC.
7. linking agent according to any one of claim 1 to 6, is characterized in that, described borate is ten hydrated sodium borates.
8. linking agent according to any one of claim 1 to 6, is characterized in that, described first organic solvent be selected from the group be made up of toluene, m-xylene and p-Xylol one or more.
9. linking agent according to any one of claim 1 to 6, is characterized in that, described first inorganic solvent is water.
10. linking agent according to any one of claim 1 to 6, is characterized in that, containing one or more hydroxyl in described alkyl alcoholamine, and the carbonatoms in described alkyl alcoholamine is C1 to C10;
Preferably, described alkyl alcoholamine is selected from one or more in the group be made up of Monoethanolamine MEA BASF, diethanolamine and trolamine.
11. linking agents according to claim 4, is characterized in that, described second organic solvent be selected from the group be made up of ethylene glycol, glycerol and propyl carbinol one or more.
12. 1 kinds of hydroxypropyl guar fracturing fluid systems, comprise hydroxypropyl guar base fluid and linking agent, it is characterized in that, the linking agent of described linking agent according to any one of claim 1 to 11.
Described in 13. 1 kinds of claims 12, the preparation method of hydroxypropyl guar fracturing fluid system, is characterized in that, described preparation method comprises:
Preparation component A: by borate, alkyl alcoholamine, the first organic solvent, the first inorganic solvent and acidic ph modifier mixing, obtain described component A;
Preparation B component: described B component comprises alkaline pH adjusting agent;
Prepare described fracturing fluid system: by weight 2 ~ 3:4, by described component A and hydroxypropyl guar mixing, obtain mixed solution; Then press the weight ratio 2:7 ~ 1:5 of described component A and described B component, described mixed solution is mixed with described B component, obtains described hydroxypropyl guar fracturing fluid system.
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Application publication date: 20151118 |