CN104277818A - Drag reducer for fracturing fluid and application thereof - Google Patents
Drag reducer for fracturing fluid and application thereof Download PDFInfo
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- CN104277818A CN104277818A CN201310286141.XA CN201310286141A CN104277818A CN 104277818 A CN104277818 A CN 104277818A CN 201310286141 A CN201310286141 A CN 201310286141A CN 104277818 A CN104277818 A CN 104277818A
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- 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
- C09K8/602—Compositions for stimulating production by acting on the underground formation containing surfactants
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- 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
- C09K8/62—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
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- 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
- C09K2208/28—Friction or drag reducing additives
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- 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
- C09K2208/30—Viscoelastic surfactants [VES]
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Abstract
The invention relates to a drag reducer for fracturing fluid and an application thereof. The invention mainly solves the problem that drag reduction rate is low in the prior art. The drag reducer for fracturing fluid comprises the following components, by weight, (1) a part of a quaternary ammonium salt dimeric surfactant; (2) 0.01-100 parts of alkylamine polyoxyethylene ether carboxylate; (3) 0.01-100 parts of alkylamine polyoxyethylene ether; and (4) 10-10,000 parts of water. By the technical scheme, the above problem is solved well. The drag reducer for fracturing fluid can be used in the shale gas recovery process.
Description
Technical field
The present invention relates to friction-reducing agent of fracturing fluid and application thereof.
Background technology
Shale gas refers to that main body is arranged in dark-coloured mud shale or high-carbon mud shale, to adsorb or unbound state is the gas accumulation of main existing way.According to the shale gas mining resources truth of a matter and Exploitation Potential, shale gas has become the third the important resource after compact sandstone gas and coal-seam gas.Shale gas reservoir has the extremely low feature of rate of permeation, and the shale gas well of more than 90% needs to take the well stimulations such as pressure break to link up natural fracture, and one of important factor realizing the economic exploitation is exactly the development degree in crack.The U.S. is the country developing shale gas the earliest, and China and the U.S. have many similarities on shale gas geologic condition, and shale gas enrichment geologic condition is superior, has and appreciable shale gas development of resources potentiality.Shale gas production technique mainly comprises staged fracturing of horizontal well technology, multiple fracturing technique, synchronous fracturing technique and riverfrac treatment technology etc., and these technology improve constantly shale gas well yield.Riverfrac treatment refers to the frac job being applied in clear water and adding friction reducer, promoting agent, expansion-resisting agent or linear glue etc. and carry out as working fluid.Riverfrac treatment have cost low, injure low and can the advantage such as degree of depth de-plugging.Riverfrac treatment seldom needs cleaning, substantially there is not residue injury problem, and can provide longer crack, and transport to fracturing propping agents as far as network of fracture.This technology since the U.S. successfully uses first, has developed into an important means of shale gas exploitation from 1997.
The process of petrofracturing is the pump adopting high-pressure large-displacement on ground, utilize the principle of liquid pressure transmission, the fracturing liquid of certain viscosity will be had, inject to oil reservoir with the pressure of the receptivity being greater than oil reservoir, and pit shaft internal pressure is raised gradually, thus suppressed high pressure in shaft bottom, when this pressure is greater than the tensile strength of the terrestrial stress of Around A Borehole and formation rock, just stratum generation crack near shaft bottom: continue to inject the sand-carrying agent with propping agent, crack extends forward and fills out with propping agent, after closing well, crack closure is on propping agent, thus near shaft bottom, in stratum, form the sand packed fracture with certain geometrical dimension and high flow conductivity, reach the object of increasing yield and injection.Of the fracturing fluid consumption is large, and needs the transmission of the long distance through underground, therefore needs to expend huge energy.In shale gas fracturing process, along with the raising of discharge capacity, the friction resistance of working fluid in pipeline will increase exponentially, and the pump pressure of construction major part is consumed and is overcoming on pipeline frictional resistance, practical function is little for the pressure pressing off payzone in payzone; Again because frictional resistance increases, discharge capacity is difficult to improve, and crack is difficult to extend forward, does not reach the object forming seam net.So reducing fracturing liquid at the frictional resistance on pipeline and stratum is the effective way improving discharge capacity, improve fluid efficiency.Friction reducer add the frictional resistance that greatly can reduce fracturing fluid system, like this under same pump pressure, it is faster, farther that fracturing liquid just can transmit, and can reduce energy consumption, thus produce economic benefit.
Water base friction reducer can be divided into high flexibility polymer and viscoelastic surfactant two kinds by the action principle according to friction reducer.High molecular high flexibility linear polymeric mainly comprises vegetable jelly polymer and the cellulose family macromolecules such as Polyacrylamide base polymer, hydroxypropyl guar gum.High molecular polymer freely can stretch in the middle of fluid, the molecular impact that suppression fluid molecule occurs in turbulent area and the energy waste produced, and reaches the object of falling resistance.The advantage of high molecular polymer friction reducer is that working concentration is low, and low concentration just can realize falling resistance object.Patent US 4637418A report adopt containing the high molecular polymer of 2-acrylamide-2-methylpro panesulfonic acid (AMPS) structure and alcohols composite, a kind of friction-reducing agent of fracturing fluid can be formed.But the shortcoming of this kind of friction reducer is easily rupture at high shear rates at polymer and make molecular weight and molecular weight, even loses and falls resistance function, and this degraded is permanent, irreversible.In addition, another shortcoming of high molecular polymer friction reducer is easily to be adsorbed onto on reservoir wall, changes the wettability of reservoir, causes water blocking damage.Viscoelastic surfactant friction reducer mainly comprises quaternary cationic surfactant, beet alkali ampholytic ionic surface active agent etc.Its mechanism of action is for when surfactant concentration reaches certain value, under pipeline shearing action, visco-elasticity reticulated structure is defined in solution, a part of kinetic energy storage in turbulent flow whirlpool can be got up, reduce whirlpool kinetic energy loss, reach and fall resistance object, along with the raising of shearing rate, this visco-elasticity reticulated structure can also strengthen, and improves resistance reducing effect.The advantage of tensio-active agent friction reducer is mainly reflected in following three aspects: one is that resistance-reducing performance is excellent; Two is that tensio-active agent shear degradation can not occur and cause falling resistance event resolves; Three is to reduce of the fracturing fluid surface tension, suppresses water blocking damage.Therefore viscoelastic surfactant friction reducer system has good application prospect, is more and more subject to people's attention.
US 4615825 discloses and adopts cetyltrimethylammonium hydroxide, Whitfield's ointment, sodium hydroxide to form viscoelastic surfactant according to suitable proportion is composite; Patent WO 116117A1 reports and utilizes anion surfactant (such as sodium oleate) and cats product (such as octadecyl trimethyl ammonium chloride) composite according to a certain percentage, can be formed and have viscoelastic system; It is composite that patent CN 1177974 describes alkyl betaine and sulfate type or sulfonate type anion surfactant, forms a kind of viscoelastic surfactant; US 2010167967A1 reports the viscoelastic surfactant utilizing double type anion surfactant and the composite formation of double-type cationic surfactant.Above-mentioned system all has certain falls resistive, and resistance reducing effect can also improve further.
Summary of the invention
One of technical problem to be solved by this invention is problem low containing the fracturing fluid compositions resistance-reducing yield of friction reducer in prior art, provides a kind of friction-reducing agent of fracturing fluid being applicable to shale gas reservoir.This friction reducer is used for, in shale gas recovery process, having the advantages that resistance-reducing efficiency is high.
Two of technical problem to be solved by this invention is to provide the application of a kind of friction-reducing agent of fracturing fluid corresponding with one of technical solution problem in shale gas recovery process.
For one of solving the problems of the technologies described above, the technical solution used in the present invention is as follows: friction-reducing agent of fracturing fluid, comprises following component by weight percentage:
(1) 1 part of Bis-quaternary Ammonium Surfactants;
(2) 0.01 ~ 100 parts of alkylamine polyethenoxy ether carboxylates;
(3) 0.01 ~ 100 parts of alkylamine Soxylat A 25-7s;
(4) 10 ~ 10000 parts of water;
Wherein the general molecular formula of component (1) is:
Wherein the general molecular formula of component (2) is
Wherein the general molecular formula of component (3) is
Wherein, R
1, R
3, R
6, R
7for C
1~ C
30alkyl, R
2for C
2~ C
6alkyl, R
4, R
5for C
1~ C
4alkyl; X
h-for negatively charged ion, wherein h is the anionic charge number of this negatively charged ion; N>=1, j>=1, and n+j=2 ~ 20; M>=1, k>=1, and m+k=2 ~ 20; Wherein M is selected from basic metal, alkaline-earth metal, NH
4, in H any one, i is the positive changes of M.
R in technique scheme
1, R
3be preferably C
8~ C
24alkyl, thiazolinyl, any one in aryl.R
6, R
7be preferably C
12~ C
24alkyl, thiazolinyl, any one in aryl.Preferred n+j=4 ~ 12, m+k=4 ~ 12.X
h-h be not particularly limited, can be 1,2,3,4, until 10000, all can reach the object of the invention; Preferred h is 1, now X
h-be more preferably F
-, Cl
-, Br
-, I
-, NO
3- -, SO
3h
-, CH
3cOO
-, HO-C
6h
4-COO
-, CH
3-C
6h
4-SO
3 -, CH
3sO
3 -, HO-CH
2cOO
-, CH
3cH (OH) COO
-in any one; X when h is 2
m-preferred SO
4 2-, di-carboxylic acid root, wherein the example of di-carboxylic acid root has oxalate, malonate, succinic, glutarate, hexanodioic acid root, tartrate anion etc.; When h is 3, such as citrate; When h is 4, such as equal four benzoate anions.Except X
h-for outside simple negatively charged ion, can also be polyanion form such as polyphosphate radical, polypropylene acid group etc.
Preferred R in technique scheme
1=R
3, and be preferably C
8~ C
24alkyl; Component (2) is R preferably
6for C
12~ C
24alkyl and one or several arbitrarily in the alkylamine polyethenoxy ether carboxylate of n+j=4 ~ 12; Component (3) is R preferably
7for C
12~ C
24alkyl and one or several arbitrarily in the alkylamine Soxylat A 25-7 of m+k=4 ~ 12.
Friction-reducing agent of fracturing fluid described in technique scheme, preferably includes: (1) 1 part of Bis-quaternary Ammonium Surfactants; (2) 0.1 ~ 10 parts of alkylamine polyethenoxy ether carboxylates; (3) 0.1 ~ 10 parts of alkylamine Soxylat A 25-7s; (4) 10 ~ 1000 parts of water.
Component described in technique scheme (4) water can be deionized water, river, underground water, seawater etc., for the consideration of the aspect such as easy construction, saving water resource, can directly use working-yard retaining.The water adopted in the embodiment of the present invention and comparative example is that southwestern oil gas branch office western sichuan region must the rainwater collected of five block working-yard water reservoirs.
Above-mentioned friction-reducing agent of fracturing fluid preparation method is not particularly limited, as long as will mix according to each component of above-mentioned aequum.Such as: by the Bis-quaternary Ammonium Surfactants of aequum, alkylamine polyethenoxy ether carboxylate and alkylamine Soxylat A 25-7, be dissolved in required water and stir.
Component described in technique scheme (1) can be buied by market, following methods also can be adopted to synthesize obtained:
such as: hexadecyldimethyl benzyl ammonium tertiary amine and Isosorbide-5-Nitrae-dibromobutane are dissolved in 200ml ethanolic soln, drip concentration be the pH of the aqueous sodium hydroxide solution hierarchy of control of 5wt% between 9 ~ 9.5, under 65 DEG C of conditions react 6 hours.After reaction terminates, steaming desolventizes and obtains white solid powder C
16-4-C
16.
Component described in technique scheme (2) can be buied by market, also can adopt the hydroxyl of the aliphatic amine polyoxyethylene ether end of the chain in weakly alkaline system with reference to the method described in US Patent No. 5334756 embodiment 3, under the effect of catalyzer, oxidizing reaction occur and obtain Fatty amine polyoxyethylene ether carboxylate:
Component (3) can be buied from market, and such as, on market, namely extensive available N, N-dihydroxy ethyl aliphatic amide belongs to the situation of k+m=2 of the present invention (being also k=1 and m=1).The situation of the k+m=2 of instant component (3) can also adopt existing synthetic method to obtain, such as employing diethanolamine and halohydrocarbon especially hydrobromic ether react and obtain, this can carry out with reference to such as Publication about Document: Ma Junxian etc. N, N-dihydroxy ethyl lauryl amine [J]. chemical research, 2010,21(6): 34 ~ 38.As for the situation of k+m > 2 of the present invention, those skilled in the art also can adopt N, and N-dihydroxy ethyl alkylamine is that initiator obtains with the reacting ethylene oxide of aequum under catalyzer (such as potassium hydroxide) exists.
In order to solve our technical problem two, technical scheme of the present invention is as follows: the application of friction-reducing agent of fracturing fluid in shale gas recovery process described in any one of one of above-mentioned technical problem.
The present invention is applicable to shale gas reservoir reservoir, and western sichuan region must adopt friction-reducing agent of fracturing fluid of the present invention by five reservoirs, and resistance-reducing yield can reach more than 70%, achieves good technique effect, can be applicable in shale gas reservoir exploitation production.
Accompanying drawing explanation
Fig. 1 is the Multifunctional flowing loop instrument schematic diagram of the resistance reducing effect for evaluating friction-reducing agent of fracturing fluid of the present invention.
In Fig. 1,1 is power-driven pump, and 2 is linking agent tank, and 3 is linking agent pump, and 4 is differential pressure pick-up, and 5 is heat exchanger, and 6 is base fluid tank, and 7 is solution feed pump, and 8 is waste liquid tank, and 9 is vent line.
embodiment
[embodiment 1]
1. the preparation of friction-reducing agent of fracturing fluid composition
(1) hexyl dimethyl tertiary amine (1mol) and Isosorbide-5-Nitrae-ethylene dibromide (0.5mol) are dissolved in 200ml ethanolic soln, drip concentration be the pH of the aqueous sodium hydroxide solution hierarchy of control of 5wt% between 9 ~ 9.5, under 65 DEG C of conditions react 6 hours.After reaction terminates, steaming desolventizes and obtains white solid powder C
6-2-C
6.
(2) in the reactor that whipping appts is housed, add 100g octyl amine polyoxyethylene (3) ether, 10 grams of sodium bicarbonates and 1.2 gram 2,2,6,6-tetramethyl piperidine oxide compound (TEMPO), when stirring, drips the chlorine bleach liquor of 400 milliliter of 1.9 mol/L in 4 hours, the temperature of the hierarchy of control is no more than 50 DEG C, and the pH keeping system is 8 ~ 9.After dropwising, continue reaction 1 hour.The hcl acidifying of reaction solution 6M is 2 to pH, is extracted with ethyl acetate, and oil phase steams and desolventizes, and then obtains octyl amine polyoxyethylene (2) ether carboxylate with aqueous sodium hydroxide solution neutralization.
(3) by 1 part of C
6-2-C
6bis-quaternary Ammonium Surfactants, 100 parts of octyl amine polyoxyethylene (2) ether carboxylates and 10 parts of octyl amine polyoxyethylene (2) ethers, be dissolved in 10000 parts of water, stir 2 hours, forms the viscoelastic fracturing fluid friction reducer of homogeneous transparent, and composition is in table 1.
2. friction-reducing agent of fracturing fluid composition properties is evaluated
Carry out the indoor resistance-reducing performance evaluation of friction-reducing agent of fracturing fluid according to the method in SY/T 6376-2008 fracturing liquid general technical specifications, clear water is loaded Multifunctional flowing loop instrument (Fig. 1 is shown in by device schematic diagram), measure clear water by stable pressure differential deltap during pipeline
p 1; Measure stable pressure differential deltap when above-mentioned friction-reducing agent of fracturing fluid flows through pipeline after the same method
p 2, calculate resistance-reducing yield η by formula (1):
（1）
From the friction pressure data obtained, choose discharge capacity is 2.5m
3the fracturing liquid of/min flows through resistance-reducing yield value when internal diameter is 62mm oil pipe, the results are shown in Table 3.
[embodiment 2]
1. the preparation of friction-reducing agent of fracturing fluid
By 1 part of C
8-3-C
8bis-quaternary Ammonium Surfactants, 2 parts of lauryl amine polyoxyethylene (2) ether carboxylates and 0.2 part of lauryl amine polyoxyethylene (2) ether, be dissolved in 300 parts of water, stir 2 hours, forms the viscoelastic fracturing fluid friction reducer of homogeneous transparent, and composition is in table 1.
2. friction-reducing agent of fracturing fluid performance evaluation
Method of evaluating performance, with embodiment 1, conveniently compares the results are shown in Table 3.
[embodiment 3]
1. the preparation of friction-reducing agent of fracturing fluid
By 1 part of C
8-4-C
8bis-quaternary Ammonium Surfactants, 0.5 part of hexadecylamine polyoxyethylene (2) ether carboxylate and 0.1 part of hexadecylamine polyoxyethylene (2) ether, be dissolved in 150 parts of water, stir 2 hours, form the viscoelastic fracturing fluid friction reducer of homogeneous transparent, composition is in table 1.
2. friction-reducing agent of fracturing fluid performance evaluation
Method of evaluating performance, with embodiment 1, conveniently compares the results are shown in Table 3.
[embodiment 4]
1. the preparation of friction-reducing agent of fracturing fluid
By 1 part of C
12-2-C
12bis-quaternary Ammonium Surfactants, 3 parts of beef tallow amine polyoxyethylene (2) ether carboxylates and 0.2 part of beef tallow amine polyoxyethylene (2) ether, be dissolved in 400 parts of water, stir 2 hours, forms the viscoelastic fracturing fluid friction reducer of homogeneous transparent, and composition is in table 1.
2. friction-reducing agent of fracturing fluid performance evaluation
Method of evaluating performance, with embodiment 1, conveniently compares the results are shown in Table 3.
[embodiment 5]
1. the preparation of friction-reducing agent of fracturing fluid
By 1 part of C
12-4-C
12bis-quaternary Ammonium Surfactants, 20 parts of lauryl amine polyoxyethylene (2) ether carboxylates and 0.4 part of lauryl amine polyoxyethylene (2) ether, be dissolved in 2000 parts of water, stir 2 hours, form the viscoelastic fracturing fluid friction reducer of homogeneous transparent, composition is in table 1.
2. friction-reducing agent of fracturing fluid performance evaluation
Method of evaluating performance, with embodiment 1, conveniently compares the results are shown in Table 3.
[embodiment 6]
1. the preparation of friction-reducing agent of fracturing fluid
By 1 part of C
12-6-C
12bis-quaternary Ammonium Surfactants, 1 part of hexadecylamine polyoxyethylene (2) ether carboxylate and 0.2 part of hexadecylamine polyoxyethylene (2) ether, be dissolved in 220 parts of water, stir 2 hours, forms the viscoelastic fracturing fluid friction reducer of homogeneous transparent, and composition is in table 1.
2. friction-reducing agent of fracturing fluid performance evaluation
Method of evaluating performance, with embodiment 1, conveniently compares the results are shown in Table 3.
[embodiment 7]
1. the preparation of friction-reducing agent of fracturing fluid
By 1 part of C
16-2-C
16bis-quaternary Ammonium Surfactants, 1 part of beef tallow amine polyoxyethylene (4) ether carboxylate and 0.2 part of beef tallow amine polyoxyethylene (4) ether, be dissolved in 220 parts of water, stir 2 hours, forms the viscoelastic fracturing fluid friction reducer of homogeneous transparent, and composition is in table 1.
2. friction-reducing agent of fracturing fluid performance evaluation
Method of evaluating performance, with embodiment 1, conveniently compares the results are shown in Table 3.
[embodiment 8]
1. the preparation of friction-reducing agent of fracturing fluid
By 1 part of C
16-4-C
16bis-quaternary Ammonium Surfactants, 1 part of beef tallow amine polyoxyethylene (6) ether carboxylate and 0.2 part of beef tallow amine polyoxyethylene (6) ether, be dissolved in 220 parts of water, stir 2 hours, forms the viscoelastic fracturing fluid friction reducer of homogeneous transparent, and composition is in table 1.
2. friction-reducing agent of fracturing fluid performance evaluation
Method of evaluating performance, with embodiment 1, conveniently compares the results are shown in Table 3.
[embodiment 9]
1. the preparation of friction-reducing agent of fracturing fluid
By 1 part of C
16-4-C
16bis-quaternary Ammonium Surfactants, 1 part of beef tallow amine polyoxyethylene (8) ether carboxylate and 0.2 part of beef tallow amine polyoxyethylene (8) ether, be dissolved in 220 parts of water, stir 2 hours, forms the viscoelastic fracturing fluid friction reducer of homogeneous transparent, and composition is in table 1.
2. friction-reducing agent of fracturing fluid performance evaluation
Method of evaluating performance, with embodiment 1, conveniently compares the results are shown in Table 3.
[embodiment 10]
1. the preparation of friction-reducing agent of fracturing fluid
By 1 part of C
16-4-C
16bis-quaternary Ammonium Surfactants, 1 part of beef tallow amine polyoxyethylene (8) ether carboxylate and 0.2 part of beef tallow amine polyoxyethylene (8) ether, be dissolved in 500 parts of water, stir 2 hours, forms the viscoelastic fracturing fluid friction reducer of homogeneous transparent, and composition is in table 2.
2. friction-reducing agent of fracturing fluid performance evaluation
Method of evaluating performance, with embodiment 1, conveniently compares the results are shown in Table 3.
[embodiment 11]
1. the preparation of friction-reducing agent of fracturing fluid
By 1 part of C
16-4-C
16bis-quaternary Ammonium Surfactants, 1 part of beef tallow amine polyoxyethylene (10) ether carboxylate and 0.2 part of beef tallow amine polyoxyethylene (10) ether, be dissolved in 1000 parts of water, stir 2 hours, forms the viscoelastic fracturing fluid friction reducer of homogeneous transparent, and composition is in table 2.
2. friction-reducing agent of fracturing fluid performance evaluation
Method of evaluating performance, with embodiment 1, conveniently compares the results are shown in Table 3.
[embodiment 12]
1. the preparation of friction-reducing agent of fracturing fluid
By 1 part of C
16-4-C
16bis-quaternary Ammonium Surfactants, 0.8 part of beef tallow amine polyoxyethylene (4) ether carboxylate, 0.2 part of hexadecylamine polyoxyethylene (3) ether carboxylate and 0.2 part of beef tallow amine polyoxyethylene (4) ether, be dissolved in 220 parts of water, stir 2 hours, form the viscoelastic fracturing fluid friction reducer of homogeneous transparent, composition is in table 2.
2. friction-reducing agent of fracturing fluid performance evaluation
Method of evaluating performance, with embodiment 1, conveniently compares the results are shown in Table 3.
[embodiment 13]
1. the preparation of friction-reducing agent of fracturing fluid
By 1 part of C
16-4-C
16bis-quaternary Ammonium Surfactants, 0.8 part of beef tallow amine polyoxyethylene (6) ether carboxylate, 0.2 part of hexadecylamine polyoxyethylene (4) ether carboxylate and 0.3 part of beef tallow amine polyoxyethylene (6) ether, be dissolved in 230 parts of water, stir 2 hours, form the viscoelastic fracturing fluid friction reducer of homogeneous transparent, composition is in table 2.
2. friction-reducing agent of fracturing fluid performance evaluation
Method of evaluating performance, with embodiment 1, conveniently compares the results are shown in Table 3.
[embodiment 14]
1. the preparation of friction-reducing agent of fracturing fluid
By 1 part of C
16-4-C
16bis-quaternary Ammonium Surfactants, 0.8 part of beef tallow amine polyoxyethylene (8) ether carboxylate, 0.2 part of hexadecylamine polyoxyethylene (8) ether carboxylate and 0.2 part of beef tallow amine polyoxyethylene (4) ether, be dissolved in 220 parts of water, stir 2 hours, form the viscoelastic fracturing fluid friction reducer of homogeneous transparent, composition is in table 2.
2. friction-reducing agent of fracturing fluid performance evaluation
Method of evaluating performance, with embodiment 1, conveniently compares the results are shown in Table 3.
[embodiment 15]
1. the preparation of friction-reducing agent of fracturing fluid
By 1 part of C
18-4-C
18bis-quaternary Ammonium Surfactants, 1 part of beef tallow amine polyoxyethylene (2) ether carboxylate and 0.2 part of beef tallow amine polyoxyethylene (2) ether, be dissolved in 220 parts of water, stir 2 hours, forms the viscoelastic fracturing fluid friction reducer of homogeneous transparent, and composition is in table 2.
2. friction-reducing agent of fracturing fluid performance evaluation
Method of evaluating performance, with embodiment 1, conveniently compares the results are shown in Table 3.
[embodiment 16]
1. the preparation of friction-reducing agent of fracturing fluid
By 1 part of C
18-4-C
18bis-quaternary Ammonium Surfactants, 1 part of docosyl amine polyoxyethylene (2) ether carboxylate and 0.2 part of docosyl amine polyoxyethylene (2) ether, be dissolved in 220 parts of water, stir 2 hours, form the viscoelastic fracturing fluid friction reducer of homogeneous transparent, composition is in table 2.
2. friction-reducing agent of fracturing fluid performance evaluation
Method of evaluating performance, with embodiment 1, conveniently compares the results are shown in Table 3.
[embodiment 17]
1. the preparation of friction-reducing agent of fracturing fluid
By 1 part of C
30-4-C
30bis-quaternary Ammonium Surfactants, 1 part of docosyl amine polyoxyethylene (2) ether carboxylate and 0.2 part of docosyl amine polyoxyethylene (2) ether, be dissolved in 220 parts of water, stir 2 hours, form the viscoelastic fracturing fluid friction reducer of homogeneous transparent, composition is in table 2.
2. friction-reducing agent of fracturing fluid performance evaluation
Method of evaluating performance, with embodiment 1, conveniently compares the results are shown in Table 3.
[embodiment 18]
1. the preparation of friction-reducing agent of fracturing fluid
By 1 part of C
30-4-C
30bis-quaternary Ammonium Surfactants, 1 part of docosyl amine polyoxyethylene (2) ether carboxylate and 0.2 part of docosyl amine polyoxyethylene (2) ether, be dissolved in 220 parts of water, stir 2 hours, form the viscoelastic fracturing fluid friction reducer of homogeneous transparent, composition is in table 2.
2. friction-reducing agent of fracturing fluid performance evaluation
Method of evaluating performance, with embodiment 1, conveniently compares the results are shown in Table 3.
[comparative example 1]
1. the preparation of friction-reducing agent of fracturing fluid
By 1 part of palmityl trimethyl ammonium chloride quaternary surfactant, 0.5 part of docosyl amine polyoxyethylene (2) ether carboxylate and 0.1 part of docosyl amine polyoxyethylene (2) ether, be dissolved in 1000 parts of water, stir 2 hours, form the viscoelastic fracturing fluid friction reducer of homogeneous transparent.
2. friction-reducing agent of fracturing fluid performance evaluation
Method of evaluating performance is with embodiment 1, and resistance-reducing yield data are 36%.
[comparative example 2]
1. the preparation of friction-reducing agent of fracturing fluid
By 1 part of C
16-4-C
16bis-quaternary Ammonium Surfactants, 2 parts of docosyl polyoxyethylene (2) ether carboxylates and 0.5 part of docosyl polyoxyethylene (2) ether, be dissolved in 350 parts of water, stir 2 hours, forms the viscoelastic fracturing fluid friction reducer of homogeneous transparent.
2. friction-reducing agent of fracturing fluid performance evaluation
Method of evaluating performance is with embodiment 1, and resistance-reducing yield data are 43%.
1(is continued for table) embodiment 1-9 fracturing liquid composition
Table 1(continues) embodiment 1-9 fracturing liquid composition
2(is continued for table) embodiment 10-18 fracturing liquid composition
Table 2(continues) embodiment 10-18 fracturing liquid composition
Table 3 embodiment 1-18 fracturing liquid resistance-reducing yield
| Embodiment | Resistance-reducing yield % |
| 1 | 48 |
| 2 | 52 |
| 3 | 53 |
| 4 | 58 |
| 5 | 61 |
| 6 | 63 |
| 7 | 71 |
| 8 | 78 |
| 9 | 75 |
| 10 | 68 |
| 11 | 65 |
| 12 | 85 |
| 13 | 89 |
| 14 | 83 |
| 15 | 66 |
| 16 | 68 |
| 17 | 65 |
| 18 | 55 |
Claims (10)
1. a friction-reducing agent of fracturing fluid, comprises following component with weight parts:
(1) 1 part of Bis-quaternary Ammonium Surfactants;
(2) 0.01 ~ 100 parts of alkylamine polyethenoxy ether carboxylates;
(3) 0.01 ~ 100 parts of alkylamine Soxylat A 25-7s;
(4) 10 ~ 10000 parts of water
Wherein the general molecular formula of component (1) is:
Wherein the general molecular formula of component (2) is
Wherein the general molecular formula of component (3) is
Wherein, R
1, R
3, R
6, R
7for C
1~ C
30alkyl, R
2for C
2~ C
6alkyl, R
4, R
5for C
1~ C
4alkyl; X
h-for negatively charged ion, wherein h is the anionic charge number of this negatively charged ion; N>=1, j>=1, and n+j=2 ~ 20; M>=1, k>=1, and m+k=2 ~ 20; Wherein M is selected from basic metal, alkaline-earth metal, NH
4, in H any one, i is the positive changes of M.
2. friction-reducing agent of fracturing fluid according to claim 1, is characterized in that R
1, R
3for C
8~ C
24alkyl, thiazolinyl, any one in aryl.
3. friction-reducing agent of fracturing fluid according to claim 1, is characterized in that R
6, R
7for C
12~ C
24alkyl, thiazolinyl, any one in aryl.
4. friction-reducing agent of fracturing fluid according to claim 1, is characterized in that n+j=4 ~ 12, m+k=4 ~ 12.
5. friction-reducing agent of fracturing fluid according to claim 1, is characterized in that wherein X in component (1) general molecular formula
h-for F
-, Cl
-, Br
-, I
-, NO
3- -, SO
3h
-, CH
3cOO
-, HO-C
6h
4-COO
-, CH
3-C
6h
4-SO
3 -, CH
3sO
3 -, HO-CH
2cOO
-, CH
3cH (OH) COO
-in any one.
6. friction-reducing agent of fracturing fluid according to claim 1, is characterized in that R
1=R
3, be C
8~ C
24alkyl.
7. friction-reducing agent of fracturing fluid according to claim 1, is characterized in that component (2) is selected from R
6for C
12~ C
24alkyl and one or several arbitrarily in the alkylamine polyethenoxy ether carboxylate of n+j=4 ~ 12.
8. friction-reducing agent of fracturing fluid according to claim 1, is characterized in that component (3) is selected from R
7for C
12~ C
24alkyl and one or several arbitrarily in the alkylamine Soxylat A 25-7 of m+k=4 ~ 12.
9. friction-reducing agent of fracturing fluid according to claim 1, is characterized in that comprising:
(1) 1 part of Bis-quaternary Ammonium Surfactants;
(2) 0.1 ~ 10 parts of alkylamine polyethenoxy ether carboxylates;
(3) 0.1 ~ 10 parts of alkylamine Soxylat A 25-7s;
(4) 10 ~ 1000 parts of water.
10. the application of friction-reducing agent of fracturing fluid according to any one of claim 1 to 9 in shale gas recovery process.
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| CN109679635A (en) * | 2017-10-18 | 2019-04-26 | 中国石油化工股份有限公司 | Solid foam water discharge agent composition and its preparation method and application |
| CN109679606A (en) * | 2017-10-18 | 2019-04-26 | 中国石油化工股份有限公司 | Foaming water discharge agent composition and its preparation method and application |
| CN110776901A (en) * | 2019-03-07 | 2020-02-11 | 北京盛昌百年石油科技有限公司 | Environment-friendly drag reducer for fracturing and preparation method thereof |
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| CN108084984A (en) * | 2017-12-05 | 2018-05-29 | 西南石油大学 | A kind of agent for releasing for reducing guanidine gum fracturing fluid and being injured in sandstone reservoir |
| CN108084984B (en) * | 2017-12-05 | 2019-01-15 | 西南石油大学 | A kind of agent for releasing for reducing guanidine gum fracturing fluid and being injured in sandstone reservoir |
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