CN110358523A - A kind of specialty polymer and its application for from suspended prop - Google Patents
A kind of specialty polymer and its application for from suspended prop Download PDFInfo
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- CN110358523A CN110358523A CN201910566704.8A CN201910566704A CN110358523A CN 110358523 A CN110358523 A CN 110358523A CN 201910566704 A CN201910566704 A CN 201910566704A CN 110358523 A CN110358523 A CN 110358523A
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- suspended prop
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
- C08J9/06—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent
- C08J9/08—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent developing carbon dioxide
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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
- C09K8/80—Compositions for reinforcing fractures, e.g. compositions of proppants used to keep the fractures open
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2203/00—Foams characterized by the expanding agent
- C08J2203/02—CO2-releasing, e.g. NaHCO3 and citric acid
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2333/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers
- C08J2333/24—Homopolymers or copolymers of amides or imides
- C08J2333/26—Homopolymers or copolymers of acrylamide or methacrylamide
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2471/00—Characterised by the use of polyethers obtained by reactions forming an ether link in the main chain; Derivatives of such polymers
- C08J2471/02—Polyalkylene oxides
Abstract
The invention provides a kind of specialty polymer for from suspended prop, is made of following component: hydrophobic associated polymer mass percentage concentration be 20-30%, 100 parts by volume；Diversion agent is by 0.1-11.5 parts based on the quality volume of hydrophobic associated polymer；Micropore propellant is by 1-10 parts based on the quality volume of hydrophobic associated polymer.Additionally provide the method using specialty polymer preparation from suspended prop.There is excellent instant performance, apparent viscosity, rheological property, broken colloidality energy from suspended prop described in the invention, and its residue content is few after breaking gel, earth's surface is polluted few.
Description
Technical field
The invention belongs to petroleum gas fracturing technique field, more particularly, to a kind of for from suspended prop
Specialty polymer and its application.
Background technique
With the rapid development of domestic and international oil and gas exploration business, hydraulic fracturing is constructed instantly so that longer
Period can all occupy the leading position of oil gas field well stimulation, and construction technology technology is quickly grown, and drive demand is developed higher
It is effect, energy-saving and environmental protection, easy to operate, precise match technological design and the low cost of field operation demand, clean fracturing fluid can be met
System.
VES Viscoelastic surfactant's fracturing fluid system, low residue guar gum fracturing fluid system, linear fracturing fluid system,
Active water fracturing fluid system etc. occurs in succession, improves operating efficiency to a certain extent, improves operation quality, but effect has
Limit.
It is exactly that pressure break proppant and fracturing fluid various additives are concentrated by special technique to do from suspension pressure break system
The form of change organically combines in a kind of product, and when fracturing sand feeding mixes proppant in fracturing blender truck with water, from suspended substance
It is suspended in fracturing fluid system to particle immediate stability in system, carries proppant and enter the technique skill that stratum carries out pressure break
Art.Pressing crack construction is completed in the case where saving a large amount of manpowers, equipment, raw material, makes that pressure break is highly efficient, simple, energy saving, ring
It protects.
It is current from suspension pressure break system, used from suspended prop, production method is mostly that resin, resin solidification is added
Agent, addition crosslinking agent, addition high molecular material, addition dispersing agent and etc., production technology is complicated.It is existing from suspended prop
Instant performance, apparent viscosity, rheological property, broken colloidality can be both needed to further improve, and residue content after breaking gel is higher.
Summary of the invention
In view of this, the invention is directed to a kind of specialty polymer for from suspended prop and its application,
With obtain instant performance, apparent viscosity, rheological property, broken glue function admirable from suspended prop, and its residue after breaking gel
Content is lower, pollutes to earth's surface few.
In order to achieve the above objectives, the technical solution of the invention is achieved in that
A kind of specialty polymer for from suspended prop, is made of following component:
Hydrophobic associated polymer: mass percentage concentration 20-30%, 100 parts by volume；
Diversion agent: by 0.1-11.5 parts based on the quality volume of hydrophobic associated polymer；
Micropore propellant: by 1-10 parts based on the quality volume of hydrophobic associated polymer.
Above-mentioned " mass volume ratio " refers to the quality and the hydrophobic associated polymer volume of diversion agent, micropore propellant
Ratio, wherein when diversion agent, micropore propellant quality using " g " as unit when, corresponding hydrophobic associated polymer body
Long-pending unit is " mL ".
Further, the hydrophobic associated polymer refers to the introducing minute quantity hydrophobic grouping in the hydrophilic backbone of polymer
A kind of water-soluble polymer formed.
Further, the solid concentration of the hydrophobic associated polymer is 85-95%, relative molecular weight 1200-1500
Ten thousand, degree of hydrolysis 20-25%.
Further, the hydrophobic associated polymer is hydrophobic association polyacrylamide.
Further, the hydrophobic association polyacrylamide solid concentration is 90%, and relative molecular weight is 13,000,000, hydrolysis
Degree is 23%, and commercial goods code name is AP-P41.
Further, the diversion agent is EPE polyol EPE or polyoxyethylene-type surfactant.
Further, the EPE polyol EPE is preferably sapn, tween surfactants.
Further, the polyoxyethylene-type surfactant is preferably isomerous tridecanol polyoxyethylene ether, commercial goods
Code name is E-1302.
Further, the micropore propellant is that can heat the substance for generating gas, is capable of providing the wetted path of water.
Further, the micropore propellant is preferably sodium bicarbonate.
The original material of each component of the present invention is commercially available, and each raw material meets corresponding Industry code requirements
?.
Further, the mass percentage concentration of hydrophobic associated polymer be 23-28%, 100 parts by volume；Diversion agent is pressed
Quality volume based on hydrophobic associated polymer is preferably 4-8 parts；Micropore propellant presses the quality based on hydrophobic associated polymer
Volume is preferably 5-9 parts.The instant capacity from suspended prop obtained using the specialty polymer laminated quartz sand under the proportion
Energy, apparent viscosity, rheological property, broken colloidality can reach best.
A method of it is prepared using the specialty polymer as described in claim 1-7 from suspended prop, by walking as follows
Rapid composition:
Step 1: hydrophobic associated polymer being diluted with water, stirs, obtains stoste；
Step 2: diversion agent being added in stoste described in step 1, stirring obtains mixed liquor；
Step 3: micropore propellant being added in mixed liquor described in step 2, stirring obtains specialty polymer.
Step 4: the 20/40 mesh quartz sand or haydite for cleaning drying are added in kneader, heats up, under agitation,
Specialty polymer described in addition step 3, stirring, discharging, cooling, screening obtain the branch that suspends certainly of the specialty polymer overlay film
Support agent.
Further, the specialty polymer is by the 3-10 parts of additions based on the quality volume of quartz sand or haydite.
Further, the specialty polymer is obtained dedicated by 5 parts of additions based on the quality volume of quartz sand or haydite
10% sand ratio of polymer overlay film from suspended prop, there is excellent performance.
Above-mentioned " mass volume ratio " refers to the quality of quartz sand or haydite and the ratio of the specialty polymer volume,
In when the quality of quartz sand or haydite is using " g " as unit, the unit of corresponding specialty polymer volume is " mL ".
Compared with the existing technology, it a kind of specialty polymer for from suspended prop described in the invention and its answers
With having the advantage that
(1) it is of the present invention using specialty polymer laminated quartz sand obtain from suspended prop, instant performance, table
Viscosity, rheological property, broken glue function admirable are seen, and its residue content after breaking gel is lower, earth's surface is polluted few.
(2) preparation process of specialty polymer of the present invention, it is simple compared with tradition is from suspended prop coating technique
It is single and pollution-free, only it need to mediate and can complete in kneader.
(3) hydrophobic associated polymer has been used in specialty polymer of the present invention, with self-crosslinking, and had superpower
Outstanding sand and prop-carrying capacity, and fragile glue, can voluntarily degrade, damage will not be generated to stratum, it is reusable to return drain.
(4) specialty polymer heat and salinity tolerance performance of the present invention is strong, because association polymer is in addition to polymer segment
Penetrate and tangle and work to the formation of network outer, the hydrophobic part on polymer chain can also be associated by hydrophobic force
And polymer poly is made to gather together.Hydrophobic association can be bigger than the bond energy of Van der Waals force and hydrogen bond, and the network structure of formation is stronger, because
This temperature resistance, anti-salt property are stronger than traditional polymer.
(5) hydrophobic associated polymer of the present invention, efficient diversion agent and micropore propellant, for low toxicity or nontoxic place
Agent is managed, pollution will not be generated to environment.
(6) the broken colloidality of specialty polymer of the present invention can be good, after its wiring solution-forming is added gel breaker 6 hours, breaks
Glue residue content is 31mg/L.
(7) specialty polymer of the present invention hangs that sand, to take husky performance good, and the static grittiness that hangs is done at 60 DEG C and 90 DEG C to be surveyed
Examination, does not find sedimentation phenomenon in 3 hours.
Detailed description of the invention
The attached drawing for constituting a part of the invention is used to provide to further understand the invention, present invention wound
The illustrative embodiments and their description made are used to explain the present invention creation, do not constitute the improper restriction to the invention.?
In attached drawing:
Fig. 1 is to break glue described in the invention embodiment from after the specialty polymer laminated quartz sand of suspended prop
Electron microscope.
Specific embodiment
The present invention will be described in detail below with reference to the accompanying drawings and embodiments creates.
Embodiment 1:
Prepare specialty polymer:
Step 1: it is 25% that hydrophobic associated polymer, which is diluted to mass percentage concentration with deionized water, is stirred in kneader
It mixes 1 hour, obtains stoste；
Step 2: by efficient diversion agent isomerous tridecanol polyoxyethylene ether by 5 based on hydrophobic associated polymer quality volume
Part, it is slowly added in stoste described in step 1, stirs 2 hours, mix them thoroughly uniformly；
Step 3: by micropore propellant sodium bicarbonate by 6 parts based on hydrophobic associated polymer quality volume, being slowly added to
It in solution described in step 2, stirs 3 hours, mixes them thoroughly uniformly, obtain the specialty polymer.
Embodiment 2:
It is prepared using the specialty polymer that embodiment 1 obtains from suspended prop:
200 parts of 20/40 mesh quartz sand for cleaning drying is added in kneader, is warming up to 120 DEG C, is 80r/ in revolving speed
Under the stirring condition of min, 50 parts of specialty polymer solution that embodiment 1 obtains are added, is stirred 1 hour, discharging, cooling, screening,
Obtain the specialty polymer overlay film from suspended prop.
According to China National Petroleum professional standard SY/T 5107-2005 " aqueous fracturing fluid method of evaluating performance " and SY/
T 6376-2008 " fracturing fluid general technical specifications " carries out multinomial experiment to from suspension system, mainly there is instant test, apparently
Viscosity, rheological property, gel breaking test and residue content.
(1) instant experiment
It weighs 200g distilled water to be put into mixed tune device, adjusts agitator speed 700r/min, 20g embodiment 2 is added and obtains
Specialty polymer overlay film from suspended prop, start timing stirring, stop stirring after stirring 60 seconds.
Experimental result: the gap in liquid surface static rear support agent face to liquid level is zero, and specialty polymer of the present invention covers
Film from the instant function admirable of suspended prop.
(2) apparent viscosity
It weighs 500g distilled water to be put into mixed tune device, adjusts agitator speed 700r/min, 50g embodiment 2 is added and obtains
Specialty polymer overlay film from suspended prop, stir 3min, be placed in 25 DEG C of water-baths and stand 30min, with G1 sand core funnel
It is filtered under diminished pressure, clear liquid is taken to survey base fluid apparent viscosity.
Experimental result: apparent viscosity 39.0mPa.s, specialty polymer overlay film of the present invention from suspended prop
Apparent viscosity function admirable.
(3) rheological property
It weighs 500g distilled water to be put into mixed tune device, adjusts agitator speed 700r/min, 50g embodiment 2 is added and obtains
Specialty polymer overlay film from suspended prop, stir 3min, be placed in 25 DEG C of water-baths and stand 30min, with G1 sand core funnel
It is filtered under diminished pressure, takes clear liquid to carry out 90 DEG C of rheological property detections with Haake torque rheometer, the results are shown in Table 1.
1 specialty polymer overlay film of table from suspended prop rheology testing
| Time/min | 0.366 | 10.19 | 20.03 | 30.06 | 40.06 |
| Temperature/DEG C | 21.39 | 55.32 | 89.45 | 90.03 | 90.01 |
| Apparent viscosity/mPa.s | 67.05 | 58.52 | 54.27 | 55.63 | 56.63 |
| Time/min | 50.06 | 60.06 | 70.06 | 80.06 | 90.06 |
| Temperature/DEG C | 89.97 | 90.00 | 90.00 | 90.00 | 90.00 |
| Apparent viscosity/mPa.s | 55.04 | 54.83 | 54.92 | 54.71 | 54.08 |
Experimental result: 90 DEG C of experimental temperature, shear rate 170s-1Under the conditions of, apparent viscosity > 54mPa.s after 90min, this
The rheological property from suspended prop of the invention specialty polymer overlay film is excellent.
(4) gel breaking test
It weighs 500g distilled water to be put into mixed tune device, adjusts agitator speed 700r/min, 50g embodiment 2 is added and obtains
Specialty polymer overlay film from suspended prop, 0.1% gel breaker is added, stirs 3min, is placed in 80 DEG C of water-baths and stands
60min is filtered under diminished pressure with G1 sand core funnel, and clear liquid is taken to survey base fluid apparent viscosity.
Experimental result: after breaking gel, apparent viscosity 1.01mPa.s, specialty polymer overlay film of the present invention hangs certainly
It is thorough that floating proppant breaks glue.
(5) residue content
It weighs 500g distilled water to be put into mixed tune device, adjusts agitator speed 700r/min, 50g embodiment 2 is added and obtains
Specialty polymer overlay film from suspended prop, 0.1% gel breaker is added, stirs 3min, is placed in 80 DEG C of water-baths and stands
60min is filtered under diminished pressure with G1 sand core funnel, and clear liquid is taken to survey the residue content of breaking glue solution.
Experimental result: after breaking gel, residue content 31mg/L, well below residue in aqueous fracturing fluid general technology index
Content≤600mg/L standard, the residue content after breaking gel from suspended prop of specialty polymer overlay film of the present invention
It is low, stratum is endangered small.
The foregoing is merely the preferred embodiments of the invention, are not intended to limit the invention creation, all at this
Within the spirit and principle of innovation and creation, any modification, equivalent replacement, improvement and so on should be included in the invention
Protection scope within.
Claims (10)
1. a kind of specialty polymer for from suspended prop, it is characterised in that: be made of following component:
Hydrophobic associated polymer: mass percentage concentration 20-30%, 100 parts by volume；
Diversion agent: by 0.1-11.5 parts based on the quality volume of hydrophobic associated polymer；
Micropore propellant: by 1-10 parts based on the quality volume of hydrophobic associated polymer.
2. a kind of specialty polymer for from suspended prop according to claim 1, it is characterised in that: described hydrophobic
The solid concentration of association polymer is 85-95%, and relative molecular weight is 1200-1500 ten thousand, degree of hydrolysis 20-25%.
3. a kind of specialty polymer for from suspended prop according to claim 1, it is characterised in that: described hydrophobic
Association polymer is hydrophobic association polyacrylamide.
4. a kind of specialty polymer for from suspended prop according to claim 1, it is characterised in that: the diversion
Agent is EPE polyol EPE or polyoxyethylene-type surfactant.
5. a kind of specialty polymer for from suspended prop according to claim 4, it is characterised in that: described polynary
Alcohol type surfactant is preferably sapn, tween surfactants.
6. a kind of specialty polymer for from suspended prop according to claim 4, it is characterised in that: the polyoxy
Ethylene type surfactant is preferably isomerous tridecanol polyoxyethylene ether.
7. a kind of specialty polymer for from suspended prop according to claim 1, it is characterised in that: the micropore
Propellant is preferably sodium bicarbonate.
8. a kind of specialty polymer for from suspended prop according to claim 1, it is characterised in that: hydrophobic association
The mass percentage concentration of polymer is preferably 23-28%, and 100 parts by volume；Diversion agent is pressed based on hydrophobic associated polymer
Quality volume is preferably 4-8 parts；Micropore propellant is preferably 5-9 parts by the quality volume based on hydrophobic associated polymer.
9. a kind of method prepared using specialty polymer according to claims 1-8 from suspended prop, it is characterised in that:
It is made of following steps:
Step 1: hydrophobic associated polymer being diluted with water, stirs, obtains stoste；
Step 2: diversion agent being added in stoste described in step 1, stirring obtains mixed liquor；
Step 3: micropore propellant being added in mixed liquor described in step 2, stirring obtains specialty polymer.
Step 4: the 20/40 mesh quartz sand or haydite for cleaning drying being added in kneader, heating is added under agitation
Specialty polymer described in step 3, stirring, discharging, cooling, screening, obtain the specialty polymer overlay film from suspended prop.
10. specialty polymer according to claim 9 prepares the method from suspended prop, it is characterised in that: described special
With polymer by the 3-10 parts of additions based on the quality volume of quartz sand or haydite.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910566704.8A CN110358523A (en) | 2019-06-27 | 2019-06-27 | A kind of specialty polymer and its application for from suspended prop |
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| CN201910566704.8A CN110358523A (en) | 2019-06-27 | 2019-06-27 | A kind of specialty polymer and its application for from suspended prop |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112300774A (en) * | 2020-09-02 | 2021-02-02 | 西南石油大学 | Preparation method of water-controlled oxidation gel-breaking self-suspension proppant for fracturing |
| CN114836192A (en) * | 2021-06-25 | 2022-08-02 | 四川银宇化工科技有限公司 | Self-suspending proppant and preparation method and application thereof |
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Cited By (4)
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