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NZ729059B2 - High density aqueous well fluids - Google Patents
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NZ729059B2 - High density aqueous well fluids - Google Patents

High density aqueous well fluids

Info

Publication number
NZ729059B2
NZ729059B2 NZ729059A NZ72905917A NZ729059B2 NZ 729059 B2 NZ729059 B2 NZ 729059B2 NZ 729059 A NZ729059 A NZ 729059A NZ 72905917 A NZ72905917 A NZ 72905917A NZ 729059 B2 NZ729059 B2 NZ 729059B2
Authority
NZ
New Zealand
Prior art keywords
composition
fluid
pounds per
per gallon
bromide
Prior art date
Application number
NZ729059A
Other versions
NZ729059A (en
Inventor
Kevin Coppola
Srinivasa S Godavarthy
Gregory H Lambeth
Yunqi Liu
Jacobus N Louwen
Christopher J Nalepa
Original Assignee
Albemarle Corporation
Filing date
Publication date
Application filed by Albemarle Corporation filed Critical Albemarle Corporation
Publication of NZ729059A publication Critical patent/NZ729059A/en
Publication of NZ729059B2 publication Critical patent/NZ729059B2/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • 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
    • C09K8/02—Well-drilling compositions
    • C09K8/04—Aqueous well-drilling compositions
    • C09K8/05—Aqueous well-drilling compositions containing inorganic compounds only, e.g. mixtures of clay and salt
    • 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
    • C09K8/02—Well-drilling compositions
    • C09K8/04—Aqueous well-drilling compositions
    • C09K8/06—Clay-free compositions
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B33/00—Sealing or packing boreholes or wells
    • E21B33/10—Sealing or packing boreholes or wells in the borehole

Abstract

This invention provides zinc-free aqueous brine compositions. These zinc-free aqueous brine compositions have a density of about 14.3 pounds per gallon to about 15.8 pounds per gallon, and a true crystallization temperature of about 20°F or less, and comprise water and two or more inorganic bromide salts, where the inorganic bromide salts include calcium bromide and cesium bromide. Processes for forming these zinc-free aqueous brine compositions are also provided.

Claims (11)

THAT WHICH IS CLAIMED IS:
1. A composition which is an aqueous brine having a density of about 14.3 pounds per gallon (1.71 kg/L) to about 15.8 pounds per gallon (1.89 kg/L), and a true 5 crystallization temperature of about 20°F ( -6.7°C) or less, which consists essentially of water, calcium bromide and cesium bromide, wherein the calcium bromide is in a total amount of 45 wt% to 55 wt%, relative to the total weight of the composition and the cesium bromide is in an amount of about 3.0 wt% to about 12 wt% relative to the total weight of the composition.
2. A composition according to Claim 1 which has a density of about 14.6 pounds per gallon (1.75 kg/L) or more.
3. A composition according to Claim 1 or 2 wherein the composition has a true 15 crystallization temperature of about 15°F ( -9.4°C) or less.
4. A process for forming an aqueous brine composition having a density of about 14.3 pounds per gallon (1.71 kg/L) to about 15.8 pounds per gallon (1.89 kg/L), and a true crystallization temperature of about 20°F ( -6.7°C) or less, which process comprises 20 combining, in any order, components consisting essentially of water, calcium bromide and cesium bromide, and wherein the calcium bromide is in a total amount of 45 wt% to 55 wt%, relative to the total weight of the composition and the cesium bromide is in an amount of about 3.0 wt% to about 12 wt% relative to the total weight of the composition. 25
5. A process according to Claim 4 wherein the composition formed has a density of about 14.6 pounds per gallon (1.75 kg/L) or more, and/or wherein the calcium bromide and cesium bromide are in a total amount of about 50 wt% to about 60 wt%, relative to the total weight of the composition. 30
6. 6 A process according to Claim 4 or 5 which further comprises heating during and/or after the combining.
7. A process according to any one of Claims 4-6 wherein the composition formed has a true crystallization temperature of about 15°F ( -9.4°C) or less. MARKED-UP COPY MARKED-UP COPY
8. A method of treating a wellbore, said method comprising introducing into the wellbore a fluid which is a composition according to any one of Claims 1-3. 5
9. A method according to Claim 8 wherein the fluid is a completion fluid, drilling fluid, packer fluid, or workover fluid.
10. A method according to Claim 8 wherein the fluid is a clear completion fluid. 10
11. A method according to any one of Claims 8-10 wherein the wellbore is connected to a high pressure reservoir.
NZ729059A 2017-02-13 High density aqueous well fluids NZ729059B2 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US201662423348P 2016-11-17 2016-11-17

Publications (2)

Publication Number Publication Date
NZ729059A NZ729059A (en) 2025-03-28
NZ729059B2 true NZ729059B2 (en) 2025-07-01

Family

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