CN106350053A - Quick-dissolving type seawater-based high-temperature fracturing fluid - Google Patents
Quick-dissolving type seawater-based high-temperature fracturing fluid Download PDFInfo
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- CN106350053A CN106350053A CN201610643564.6A CN201610643564A CN106350053A CN 106350053 A CN106350053 A CN 106350053A CN 201610643564 A CN201610643564 A CN 201610643564A CN 106350053 A CN106350053 A CN 106350053A
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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
- C09K8/685—Compositions based on water or polar solvents containing organic compounds containing cross-linking agents
Abstract
The invention discloses a quick-dissolving type seawater-based high-temperature fracturing fluid. The quick-dissolving type seawater-based high-temperature fracturing fluid is prepared by, by weight percentage, 1.0-2.5% of emulsion type thickening agent, 0.5-2.0% of crosslinking agent, 0.05-0.1% of phase inversion agent, 0.4-1.6% of discharge-aiding agent, 0.3-0.8% of clay stabilizer, 0.01-0.03% of gel breaker and the balance seawater, wherein the sum of the weight percentage of the components is 100%. The quick-dissolving type seawater-based high-temperature fracturing fluid has the advantages that the fracturing fluid is excellent in high temperature resistance and shearing resistance, capable of satisfying the construction technological requirements of offshore high-temperature reservoir fracturing transformation of at least 1800 DEG C, outstanding in high-temperature rheological property, stable in shearing resistance and beneficial to sand-carrying fracture making; the emulsion type thickening agent is fast in dissolving and can be prepared and used on site, and the offshore fracturing transformation construction is facilitated greatly.
Description
Technical field
The invention belongs to fracturing fluid field, more particularly, to a kind of Instant seawater base high temperature fracture liquid.
Background technology
The emphasis well stimulation as Reservoir Development is transformed in fracturing, has been widely used in oil field prospecting and exploitation
In.Fracturing fluid is the working solution during oil-gas Layer is transformed in fracturing, and fracturing fluid provides the handss of fracturing construction operation
Section, it plays transmission pressure, forms formation fracture, carries after the completion of proppant gos deep into man-made fracture and pressure break, chemolysis
Or broken glue to low-viscosity it is ensured that most of fracturing fluid recovery (backflow) to ground to purify the effect in crack.The quality of fracturing fluid property is
It is related to the success or failure of pressing crack construction and a key factor affecting effect of increasing production after pressure, the improvement of therefore its performance is always people
Endeavour study problem.At present, the fracturing fluid system that domestic land pressure break is used is relatively ripe and perfect, is suitable for
Developed by people in 30 DEG C～200 DEG C of fracturing fluid systems and used.Domestic sea fracturing technique also in starting and is explored
Stage, construction also referring especially to using land technology.Fracturing fluid also mainly passes through to prepare by land, then ships off to existing
Constructed it is impossible to be reached now with the current according to live requirement in field.The amount of fracturing fluid does not reach the requirement of construction, will make construction
Effect have a greatly reduced quality, so that spending higher drilling well work to waste.The amount of fracturing fluid is excessive, and cost of transportation will be made to carry
High, fracturing fluid processing cost increases.Meanwhile, increasingly deep with oil gas well development, formation temperature also more and more higher, to pressure
The heat resistance splitting liquid requires also more and more higher.Therefore, the work of the high temperature resistant fracturing fluid of scene sea water preparation is capable of in exploitation
Imperative.
Content of the invention
The purpose of the present invention is to develop a kind of seawater base high temperature pressure break system that directly can join liquid application work using sea water,
This system has that dissolution velocity is fast, the feature performance benefit such as temperature and shearing sustainability is good, compatibility is good, for the offer of marine pressing crack construction just
Profit, improves efficiency of construction, reduces pressure break cost, lays the foundation for realizing marine massive hydraulic fracture construction.
A kind of Instant sea water based high-temp-resistant fracturing fluid, its composition and mass fraction are: emulsion-type thickening agent 1.0%-
2.5%th, cross-linking agent 0.5%-2.0%, phase inversion agent 0.05%-0.1%, cleanup additive 0.4%-1.6%, clay stabilizer 0.3%-
0.8%th, gel breaker 0.01%-0.03%, remaining is sea water, and each constituent mass percentage ratio sum is 100%.
Described emulsion-type thickening agent is a kind of reversed-phase emulsion, and this reversed-phase emulsion is acrylamide, acrylic acid, 2- acryloyl
The quadripolymer that amine -2- methyl propane sulfonic acid salt, the polymerization of four kinds of monomers of vinyl pyrrolidone obtain, quadripolymer point
Between 800-1300 ten thousand, the mass ratio of four kinds of monomers is 25-40:5-10:15-25:3-8 to son amount.
Described cross-linking agent is isopropyl titanate, chromium acetate, Chlorizate chromium, zirconium oxychloride, acetic acid zirconium, citric acid zirconium, three ethanol
One or more of amine, diethanolamine, ammonia, ethylene glycol, acetic acid, lactic acid are compounded with water and form.Described phase inversion agent be Si Ban-
80th, one or more of tween 80, op-10, TritonX.
Described cleanup additive is that quaternary ammonium salt surface active agent, polyoxyethylated alkyl alcohol nonionic surfactant and water are multiple
Join and form, its mass ratio is 0.5-1.5:1.2-3:30-50.
Described clay stabilizer is one or more of potassium chloride, ammonium chloride.
Described gel breaker is the capsule breaker based on Ammonium persulfate., potassium peroxydisulfate.
The preparation method of above-mentioned emulsion type thickening agent is: by acrylamide, acrylic acid, 2- acrylamide -2- methylpropane
Sulfonate, the ratio with mass ratio as 25-40:5-10:15-25:3-8 for the four kinds of monomers of vinyl pyrrolidone make 40-60%
Aqueous solution, and regulation system ph be 5-6, in addition take the Si Ban -80 of quality such as a certain amount of and tween 20, be added to oil phase ring
In hexane, it is 6%-15% that emulsifying agent accounts for oil phase mass fraction, slowly that four kinds of monomers are water-soluble after dispersed with stirring dissolving completely
Liquid is added in oil phase, and control oil-water ratio is 1.4:1-1:1, side edged strong stirring emulsifying, inflated with nitrogen after the completion of emulsifying
30min-40min, adds redox initiation system (Ammonium persulfate.: sodium sulfite=1:2), controls temperature at 30-50 DEG C,
Reaction 5-8h, that is, obtain the reversed-phase emulsion that final polymer content is 20-35%, and outward appearance is the medium thick liquid of milky.
The preparation method of above-mentioned Instant sea water based high-temp-resistant fracturing fluid is:
929.9-977.2 part sea water is poured into warning mix in tune device, open stirring, adjustment rotating speed is about 500-800r/
Min, makes sea water be formed compared with Maelstrom, the phase inversion agent of load weighted 0.5-1 part is added to the water, and is subsequently adding 10-25 part breast
Liquid type thickening agent, stirs 2-3min, adds the clay stabilizer of 4-16 part cleanup additive and 3-8 part, continues stirring 5min, makes thickening
Agent dissolving fully, adds the gel breaker of 0.1-0.3 part, is then slowly added into the cross-linking agent of 5-20 part, until whirlpool disappears, liquid level
When slightly raising up, stop stirring, that is, form sea water based high-temp-resistant fracturing fluid finished product.
The present invention a little and beneficial effect:
According to industry standard " sy/t 5107-2005 aqueous fracturing fluid method of evaluating performance " to the Instant sea water being formed
Based high-temp-resistant fracturing fluid system carries out test evaluation, and the performance characteristics of this fracturing fluid are as follows:
(1) system high temperature resistant resistant to shearing excellent performance, disclosure satisfy that 180 DEG C of sea and above superhigh temperature reservoir fracturing are changed into
Construction technology demand, high temperature rheology can project, and resistant to shearing stable performance makes seam beneficial to taking sand.
(2) emulsion-type thickening agent dissolution velocity is fast, can be now with the current, greatly convenient sea fracturing reform construction.
(3) preferably, residue content is low, and core damage rate is low for system compatibility.
(4) system has higher viscosity and closes low fluid loss rate, beneficial to making seam.
(5) the broken colloidality of system can be good, and thoroughly, breaking glue solution surface and interface tension force is low, applies work beneficial to returning after pressure break for broken glue.
Brief description
Fig. 1 is Instant 180 DEG C of rheological curves of sea water based high-temp-resistant fracturing fluid.
Specific embodiment
Embodiment 1:
The preparation of emulsion-type thickening agent
By acrylamide, acrylic acid, 2- acrylamide -2- methyl propane sulfonic acid salt, four kinds of monomers of vinyl pyrrolidone
Ratio with mass ratio as 35:8:20:5 makes 60% aqueous solution, and regulation system ph is 5.5, in addition takes the matter such as a certain amount of
The Si Ban -80 of amount and tween 20, are added in oil phase hexamethylene, and it is 10% that emulsifying agent accounts for oil phase mass fraction, and dispersed with stirring is molten
Solution is completely rear slowly the aqueous solution of four kinds of monomers to be added in oil phase, and oil-water ratio is 1.2:1, side edged strong stirring emulsifying,
Inflated with nitrogen 40min after the completion of emulsifying, adds redox initiation system (Ammonium persulfate.: sodium sulfite=1:2), controls temperature
At 35 DEG C, react 8h, that is, obtain the reversed-phase emulsion that final polymer content is 27%.
954 parts of sea water are poured into warning mix in tune device, open stirring, adjustment rotating speed is about 500-800r/min, makes sea
Water is formed compared with Maelstrom, load weighted 0.8 part of phase inversion agent is added to the water, is subsequently adding 20 parts of emulsion-type thickening agents, stirs
Mix 2min, add the clay stabilizer of 10 portions of cleanup additives and 5 parts, continue stirring 5min, so that thickening agent is dissolved fully, add 0.2
The gel breaker of part, is then slowly added into 10 parts of cross-linking agent, until whirlpool disappears, when liquid level raises up slightly, stops stirring,
Form sea water based high-temp-resistant fracturing fluid finished product.Cross-linking agent is zirconium oxychloride, acetic acid zirconium, triethanolamine, lactic acid and water according to matter
Amount forms than compounding for 5:2:15:0.5:80.
Described phase inversion agent is tween 80.
Cleanup additive is quaternary ammonium salt surface active agent, polyoxyethylated alkyl alcohol nonionic surfactant and water compound and
Become, its mass ratio is 1:2.3:35.
Clay stabilizer be potassium chloride.
Gel breaker is Ammonium persulfate..
This system is applied to the fracturing reform construction of 180 DEG C of temperature reservoirs of offshore oilfield, at 180 DEG C, 170s-1Shearing
After 120min, system shear viscosity is not less than 250mpa.s, sees Fig. 1, meets Industry code requirements.
Table 1 Instant sea water based high-temp-resistant fracturing fluid main performance
Claims (10)
1. a kind of Instant seawater base high temperature fracture liquid it is characterised in that: it is to be obtained by the raw material of following mass percents: breast
Liquid type thickening agent 1.0%-2.5%, cross-linking agent 0.5%-2.0%, phase inversion agent 0.05%-0.1%, cleanup additive 0.4%-1.6%, clay stabilization
Agent 0.3%-0.8%, gel breaker 0.01%-0.03%, remaining is sea water, and each constituent mass percentage ratio sum is 100%.
2. Instant seawater base high temperature fracture liquid according to claim 1 it is characterised in that: described emulsion-type thickening agent
For a kind of reversed-phase emulsion, this reversed-phase emulsion is acrylamide, acrylic acid, 2- acrylamide -2- methyl propane sulfonic acid salt, vinyl
The quadripolymer that the polymerization of four kinds of monomers of ketopyrrolidine obtains, the molecular weight of quadripolymer between 800-1300 ten thousand, four kinds
The mass ratio of monomer is 25-40:5-10:15-25:3-8.
3. Instant seawater base high temperature fracture liquid according to claim 1 it is characterised in that: described cross-linking agent be isopropyl
Alcohol titanium, chromium acetate, Chlorizate chromium, zirconium oxychloride, acetic acid zirconium, citric acid zirconium, triethanolamine, diethanolamine, ammonia, ethylene glycol, vinegar
One or more of acid, lactic acid are compounded with water and form.
4. Instant seawater base high temperature fracture liquid according to claim 1 it is characterised in that: described phase inversion agent be Si Ban-
80th, one or more of tween 80, op-10, TritonX.
5. Instant seawater base high temperature fracture liquid according to claim 1 it is characterised in that: described cleanup additive be quaternary ammonium salt
Class surfactant, polyoxyethylated alkyl alcohol nonionic surfactant and water compound and form, and its mass ratio is 0.5-1.5:
1.2-3:30-50.
6. Instant seawater base high temperature fracture liquid according to claim 1 it is characterised in that: described clay stabilizer is
One or more of potassium chloride, ammonium chloride.
7. Instant seawater base high temperature fracture liquid according to claim 1 it is characterised in that: described gel breaker is with over cure
Capsule breaker based on sour ammonium, potassium peroxydisulfate.
8. Instant seawater base high temperature fracture liquid according to claim 1 it is characterised in that: described emulsion-type thickening agent
Preparation method is: by acrylamide, acrylic acid, 2- acrylamide -2- methyl propane sulfonic acid salt, four kinds of lists of vinyl pyrrolidone
The ratio with mass ratio as 25-40:5-10:15-25:3-8 for the body makes the aqueous solution of 40-60%, and regulation system ph is 5-6, separately
Treatment with external measures is a certain amount of etc., and the Si Ban -80 of quality is added in oil phase hexamethylene as emulsifying agent with tween 20, the addition of emulsifying agent
Be equivalent to the 6%-15% of oil phase hexamethylene mass fraction, after dispersed with stirring dissolving completely, the slow aqueous solution by four kinds of monomers adds
To in oil phase, control oil water phase ratio for 1.4:1-1:1, side edged strong stirring emulsifying, inflated with nitrogen 30min- after the completion of emulsifying
40min, adds redox initiation system, controls temperature in 30-50oC, reacts 5-8h, obtains final product.
9. Instant seawater base high temperature fracture liquid according to claim 7 it is characterised in that: described redox initiation
System is by Ammonium persulfate.: sodium sulfite is obtained by mixing according to mass ratio 1:1.8-2.
10. Instant seawater base high temperature fracture liquid according to claim 1 it is characterised in that: above-mentioned Instant seawater base
The preparation method of high temperature resistant fracturing fluid is:
Sea water is poured in mixed tune device, opens stirring, adjustment rotating speed is about 500-800r/min, make sea water form relatively Maelstrom,
Load weighted phase inversion agent is added to the water, is subsequently adding emulsion-type thickening agent, stir 2-3min, add cleanup additive and clay steady
Determine agent, continue stirring 5min, so that thickening agent is dissolved fully, add gel breaker, be then slowly added into cross-linking agent, until whirlpool disappears
Lose, when liquid level raises up slightly, stop stirring, that is, form sea water based high-temp-resistant fracturing fluid finished product.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610643564.6A CN106350053A (en) | 2016-08-08 | 2016-08-08 | Quick-dissolving type seawater-based high-temperature fracturing fluid |
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| CN201610643564.6A CN106350053A (en) | 2016-08-08 | 2016-08-08 | Quick-dissolving type seawater-based high-temperature fracturing fluid |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109486477A (en) * | 2017-09-11 | 2019-03-19 | 中国石油天然气股份有限公司 | A kind of oil-gas field fracturing liquid and its application method |
| CN110791278A (en) * | 2019-07-26 | 2020-02-14 | 大港油田集团有限责任公司 | Directly-mixed seawater-based viscosity-variable fracturing fluid and preparation method thereof |
| CN111253927A (en) * | 2020-03-30 | 2020-06-09 | 延安双丰集团有限公司 | Emulsion type fracturing fluid and preparation method thereof |
| CN111690396A (en) * | 2020-06-15 | 2020-09-22 | 山东滨州昱诚化工科技有限公司 | Preparation method of low-cost functional polymer type fracturing fluid |
| CN111849452A (en) * | 2020-09-01 | 2020-10-30 | 新疆海辰油气技术有限责任公司 | High-temperature-resistant salt-tolerant seawater-containing integrated fracturing fluid and preparation method thereof |
| CN113121581A (en) * | 2019-12-31 | 2021-07-16 | 中石化石油工程技术服务有限公司 | Preparation method of metal chelate and high-temperature polymer fracturing fluid |
| CN114891493A (en) * | 2022-04-14 | 2022-08-12 | 中海油天津化工研究设计院有限公司 | Seawater-based blending-free multifunctional fracturing fluid thickening agent and preparation method thereof |
| CN115449362A (en) * | 2022-08-23 | 2022-12-09 | 中国石油天然气集团有限公司 | Fracturing fluid for realizing high flow conductivity of artificial fractures and application method thereof |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109486477A (en) * | 2017-09-11 | 2019-03-19 | 中国石油天然气股份有限公司 | A kind of oil-gas field fracturing liquid and its application method |
| CN110791278A (en) * | 2019-07-26 | 2020-02-14 | 大港油田集团有限责任公司 | Directly-mixed seawater-based viscosity-variable fracturing fluid and preparation method thereof |
| CN113121581A (en) * | 2019-12-31 | 2021-07-16 | 中石化石油工程技术服务有限公司 | Preparation method of metal chelate and high-temperature polymer fracturing fluid |
| CN113121581B (en) * | 2019-12-31 | 2023-01-24 | 中石化石油工程技术服务有限公司 | Preparation method of metal chelate and high-temperature polymer fracturing fluid |
| CN111253927A (en) * | 2020-03-30 | 2020-06-09 | 延安双丰集团有限公司 | Emulsion type fracturing fluid and preparation method thereof |
| CN111690396A (en) * | 2020-06-15 | 2020-09-22 | 山东滨州昱诚化工科技有限公司 | Preparation method of low-cost functional polymer type fracturing fluid |
| CN111849452A (en) * | 2020-09-01 | 2020-10-30 | 新疆海辰油气技术有限责任公司 | High-temperature-resistant salt-tolerant seawater-containing integrated fracturing fluid and preparation method thereof |
| CN114891493A (en) * | 2022-04-14 | 2022-08-12 | 中海油天津化工研究设计院有限公司 | Seawater-based blending-free multifunctional fracturing fluid thickening agent and preparation method thereof |
| CN115449362A (en) * | 2022-08-23 | 2022-12-09 | 中国石油天然气集团有限公司 | Fracturing fluid for realizing high flow conductivity of artificial fractures and application method thereof |
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Application publication date: 20170125 |