Methods of Chemical Diversion of Scale Inhibitors
AssigneeSchlumberger Technology Corporation
InventorLiz Morris
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Abstract
A method of treating a hydrocarbon-containing formation including injecting a scale inhibiting well treating fluid into a well, wherein the well treating fluid includes a self-diverting acid that includes about 1% to 20% by volume of at least one viscoelastic surfactant selected from a family of compounds described by where R3 contains at least 10 carbon atoms, p=1-6, R2 contains 1-6 carbon atoms and R1 contains 1-6 carbon atoms; and up to about 20% by weight scale inhibitor.
Claims21
A scale inhibition squeeze treatment method for a hydrocarbon-containing formation, the method comprising:
- a. preparing a fluid comprising:
- i. a viscosifier;
- ii. a non-viscosifying scale inhibitor in an amount of from about 0.1% to about 20% by weight;
- and
- iii. an aqueous medium;
- b. injecting the fluid into a wellbore and introducing the fluid into a formation.
A method of treating a hydrocarbon-containing formation, the method comprising:
- a. preparing a fluid comprising:
- i. a surfactant selected from a family of compounds described by:
- where R3 contains at least 10 carbon atoms, p=1-6, R2 contains 1-6 carbon atoms and R1 contains 1-6 carbon atoms;
- ii. a phosphorus end capped polycarboxylic acid in an amount of from about 0.1% to about 20% by weight;
- and
- iii. an aqueous medium;
- b. injecting the fluid into a wellbore and introducing the fluid into a formation.
A method of providing a scale inhibition treatment, the method comprising:
- preparing a fluid comprising a viscoelastic surfactant, a phosphorus end capped polycarboxylic acid in an amount of from about 0.1% to about 20% by weight, and an aqueous medium;
- and causing the fluid to make contact with an object targeted for scale inhibition treatment.
Dependencies are inferred from the claim text.