CA2662811A1 - Hydrocarbon-based fracturing fluid compositions, methods of preparation and methods of use - Google Patents
Hydrocarbon-based fracturing fluid compositions, methods of preparation and methods of use Download PDFInfo
- Publication number
- CA2662811A1 CA2662811A1 CA 2662811 CA2662811A CA2662811A1 CA 2662811 A1 CA2662811 A1 CA 2662811A1 CA 2662811 CA2662811 CA 2662811 CA 2662811 A CA2662811 A CA 2662811A CA 2662811 A1 CA2662811 A1 CA 2662811A1
- Authority
- CA
- Canada
- Prior art keywords
- component
- liquid
- proppant
- fracturing fluid
- fluid composition
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
-
- 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
- C09K8/64—Oil-based compositions
-
- 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
- C09K8/70—Compositions for forming crevices or fractures characterised by their form or by the form of their components, e.g. foams
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Detergent Compositions (AREA)
- Colloid Chemistry (AREA)
- Gas Separation By Absorption (AREA)
- Lubricants (AREA)
Abstract
The invention describes improved fracturing compositions, methods of preparing fracturing compositions and methods of use. Importantly, the subject invention overcomes problems in the use of mists as an effective fracturing composition particularly having regard to the ability of a mist to transport an effective volume of proppant into a formation. As a result, the subject technologies provide an effective economic solution to using high ratio gas fracturing compositions that can be produced in a continuous (i.e. non-batch) process without the attendant capital and operating costs of current pure gas fracturing equipment.
Claims (30)
1. A fracturing fluid composition comprising:
a liquid component for temporarily supporting a proppant within the liquid component at surface, the liquid component including:
i) a viscosified liquid hydrocarbon component having an initial viscosity sufficient to temporarily support proppant admixed within the viscosified liquid hydrocarbon component; and, ii) a breaker for relaxing the viscosity of the viscosified liquid hydrocarbon component within a pre-determined period;
wherein the concentration of breaker within the liquid component is sufficient to relax the initial viscosity of the liquid component to less than cP at 170 sec-1 at 293K within a pre-determined time period of 30 minutes.
a liquid component for temporarily supporting a proppant within the liquid component at surface, the liquid component including:
i) a viscosified liquid hydrocarbon component having an initial viscosity sufficient to temporarily support proppant admixed within the viscosified liquid hydrocarbon component; and, ii) a breaker for relaxing the viscosity of the viscosified liquid hydrocarbon component within a pre-determined period;
wherein the concentration of breaker within the liquid component is sufficient to relax the initial viscosity of the liquid component to less than cP at 170 sec-1 at 293K within a pre-determined time period of 30 minutes.
2. A fracturing fluid composition as in claim 1 further comprising a proppant admixed within the viscosified liquid hydrocarbon component.
3. A fracturing fluid composition as in claim 2 further comprising a gas component admixed with the liquid hydrocarbon under high turbulence conditions sufficient to support the proppant within a combined liquid hydrocarbon/gas component mixture wherein the combined liquid hydrocarbon/gas component mixture is characterized as a mist or liquid slug.
4. A fracturing fluid composition as in claim 3 wherein the gas component is nitrogen.
5. A fracturing fluid composition as in any one of claims 3-4 wherein the combined liquid hydrocarbon/gas component mixture is 3-25 vol% liquid component and 75-97 vol% gas component exclusive of the proppant.
6. A fracturing fluid composition as in any one of claims 1-5 wherein the pre-determined period is less than 10 minutes.
7. A fracturing fluid composition as in any one of claims 1-6 wherein the initial viscosity of the liquid component is 15-1000 centipoise (cP) at 170 sec-1 at prior to mixing with proppant or gas component.
8. A fracturing fluid composition as in any one of claims 2-7 wherein the mass of proppant is 0.25-5.0 times the mass of the liquid component.
9. A fracturing fluid composition as in any one of claims 2-8 wherein the mass of proppant is 1.0-2.5 times the mass of the liquid component.
10. A fracturing fluid composition as in any one claims 1-9 wherein the viscosified liquid hydrocarbon component includes 0.4-3.0 wt% gelling and complexor agents.
11. A fracturing fluid composition as in claim 10 wherein the gelling agent is a phosphate ester.
12. A fracturing fluid composition as in any one of claims 10 or 11 wherein the complexor agents are any one of or a combination of iron sulphate and an amine complexing agent.
13. A fracturing fluid composition as in any one of claims 1-12 wherein the breaker is magnesium oxide or calcium oxide.
14. A fracturing fluid composition as in any one of claims 1-13 wherein the liquid component further comprises less than 0.1 vol% non-foaming surfactant.
15. A method of fracturing a formation within a well comprising the steps of:
a) preparing a liquid component at surface in a blender, the liquid component including:
i) a viscosified liquid hydrocarbon component having an initial viscosity sufficient to temporarily support proppant admixed within the viscosified liquid hydrocarbon component; and, ii) a breaker for relaxing the viscosity of the viscosified liquid hydrocarbon component within a pre-determined period wherein the concentration of breaker within the viscosified liquid hydrocarbon component is sufficient to relax the viscosity of the liquid hydrocarbon component to less than 10 cP at 170 sec-1 at 293K within 30 minutes;
b) mixing the proppant into the liquid component in the blender;
c) introducing the proppant/liquid component into a high pressure pump and increasing the pressure to well pressure;
d) introducing a gas component the high pressure pump and increasing the pressure to well pressure;
e) mixing the gas component with the proppant/liquid component under high turbulence conditions; and, f) pumping the combined gas and fluid from step e) at a high rate down the well.
a) preparing a liquid component at surface in a blender, the liquid component including:
i) a viscosified liquid hydrocarbon component having an initial viscosity sufficient to temporarily support proppant admixed within the viscosified liquid hydrocarbon component; and, ii) a breaker for relaxing the viscosity of the viscosified liquid hydrocarbon component within a pre-determined period wherein the concentration of breaker within the viscosified liquid hydrocarbon component is sufficient to relax the viscosity of the liquid hydrocarbon component to less than 10 cP at 170 sec-1 at 293K within 30 minutes;
b) mixing the proppant into the liquid component in the blender;
c) introducing the proppant/liquid component into a high pressure pump and increasing the pressure to well pressure;
d) introducing a gas component the high pressure pump and increasing the pressure to well pressure;
e) mixing the gas component with the proppant/liquid component under high turbulence conditions; and, f) pumping the combined gas and fluid from step e) at a high rate down the well.
16. A method as in claim 15 wherein the combined gas and fluid in step f) is characterized as a mist or slug at the formation.
17. A method as in any one of claims 15-16 wherein the gas component is nitrogen.
18. A method as in any one of claims 15-17 wherein the combined gas and fluid in step f) is 3-25 vol% liquid component and 75-97 vol% gas component exclusive of the proppant.
19. A method as in any one of claims 15-18 wherein the initial viscosity of the viscosified liquid hydrocarbon component is 15-1000 centipoise (cP) at 170 sec-at 293K prior to mixing with proppant or gas component.
20. A method as in any one of claims 15-19 wherein the mass of proppant mixed in step b) is 0.25-5.0 times the mass of the liquid component.
21. A method as in any one of claims 15-20 wherein the mass of proppant mixed in step b) is 1.0 -2.5 times the mass of the liquid component.
22. A method as in any one of claims 15-21 wherein the viscosified liquid component includes 0.4 to 3.0 wt% gelling and complexor agents.
23. A method as in claim 22 wherein the gelling agent is a phosphate ester.
24. A method as in claim 22 or claim 23 wherein the complexor agents are any one of or a combination of iron sulphate and an amine complexing agent.
25. A method as in any one of claims 15-24 wherein the pre-determined period is less than 10 minutes.
26. A method as in any one of claims 15-25 wherein the breaker is magnesium oxide or calcium oxide.
27. A method as in any one of claims 15-26 further comprising the step of mixing less than 0.1 vol% non-foaming surfactant with the viscosified liquid component.
28. A method as in any one of claims 15-27 wherein proppant is partially supported within the combined gas and fluid in the well and production formation by turbulence.
29. A method as in any one of claims 15-28 wherein the process is continuous.
30. A method as in of any one of claims 15-29 wherein step a) is preceded by a 100% gas pad.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2662811 CA2662811C (en) | 2008-07-25 | 2009-04-27 | Hydrocarbon-based fracturing fluid compositions, methods of preparation and methods of use |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA002635989A CA2635989C (en) | 2008-07-25 | 2008-07-25 | Fracturing fluid compositions, methods of preparation and methods of use |
| CA2,635,989 | 2008-07-25 | ||
| CA 2662811 CA2662811C (en) | 2008-07-25 | 2009-04-27 | Hydrocarbon-based fracturing fluid compositions, methods of preparation and methods of use |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2662811A1 true CA2662811A1 (en) | 2009-07-07 |
| CA2662811C CA2662811C (en) | 2010-09-28 |
Family
ID=40848363
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2662811 Expired - Fee Related CA2662811C (en) | 2008-07-25 | 2009-04-27 | Hydrocarbon-based fracturing fluid compositions, methods of preparation and methods of use |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2662811C (en) |
-
2009
- 2009-04-27 CA CA 2662811 patent/CA2662811C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CA2662811C (en) | 2010-09-28 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |
Effective date: 20210427 |