Methods for acidizing subsurface formations utilizing corrosion inhibitor compounds
AssigneeSaudi Arabian Oil Company
InventorsAbdullah S. Alenezi, Reem A. Alalwan, Muhammad Imran Ul-haq, Nayef M. Alanazi, Rashed Mohammad Aleisa
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Abstract
A subsurface formation may be acidized by a method that may comprise injecting an acidic treatment fluid into an subsurface formation through a tubing of an extraction well, thereby exposing at least a portion of the tubing to an acidic environment. At least a portion of the tubing may be contacted by a corrosion inhibitor compound that may have the general structure as described herein.
Claims20
A method of acidizing a subsurface formation, the method comprising:
- injecting an acidic treatment fluid into a subsurface formation through a tubing of an extraction well, thereby exposing at least a portion of the tubing to an acidic environment;
- wherein at least a portion of the tubing is contacted by a corrosion inhibitor compound having the general structure:
- wherein:
- R1 is a C1-C18 alkyl group, a C1-C18 hydroxyl alkyl group, a C1-C18 alkenyl group, a C1-C18 internal alkynl group, a C1-C18 acryl group, a C1-C18 cycloalkyl group, or a C1-C18 functional alkyl group;
- and
- RA, RB, RC, RD, and RE are each independently chosen from hydrogen, a C1-C18 alkyl group, a C1-C18 hydroxyl alkyl group, a C1-C18 alkenyl group, a C1-C18 alkynl group, a C1-C18 acryl group, a C1-C18 cycloalkyl group, or a C1-C18 functional alkyl group.
A method of acidizing a subsurface formation, the method comprising:
- injecting an acidic treatment fluid into a subsurface formation through a tubing of an extraction well, thereby exposing the tubing to an acidic environment;
- wherein at least a portion of the tubing is contacted by a corrosion inhibitor compound having the general structure:
- wherein:
- R1 is a C1-C18 alkyl group, a C1-C18 hydroxyl alkyl group, a C1-C18 alkenyl group, a C1-C18 internal alkynl group, a C1-C18 acryl group, a C1-C18 cycloalkyl group, or a C1-C18 functional alkyl group;
- and
- RA, RB, RC, RD, and RE are each independently chosen from hydrogen, a C1-C18 alkyl group, a C1-C18 hydroxyl alkyl group, a C1-C18 alkenyl group, a C1-C18 alkynl group, a C1-C18 acryl group, a C1-C18 cycloalkyl group, or a C1-C18 functional alkyl group.
A method of acidizing a subsurface formation, the method comprising:
- injecting an acidic treatment fluid into a subsurface formation through a tubing of an extraction well, thereby exposing at least a portion of the tubing to an acidic environment;
- wherein at least a portion of the tubing is contacted by a corrosion inhibitor compound having the general structure:
- wherein:
- R1 is a C1-C18 alkyl group;
- and
- RA, RB, RC, RD, and RE are each hydrogen.
Dependencies are inferred from the claim text.