Additive for enhanced treatment of oil well contaminants
AssigneeWolfco Group, Inc.
InventorEdward J. Madachik, Jr.
Life of this patent
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Abstract
The present invention relates to a chemical additive for use with treatment fluids suitable for removing contaminants from oil and gas wells. In one preferred embodiment, the additive includes: a first surface-active agent having an HLB in a range of about 5 to about 9; a second surface-active agent having an HLB in a range of about 11 to about 13; a third surface-active agent having an HLB in a range of about 14 to about 33; a coupling agent; and a coalescing solvent.
Claims86
A chemical composition comprising:
- a) a first surface-active agent having an HLB in a range of about 5 to about 9;
- b) a second surface-active agent having an HLB in a range of about 11 to about 13;
- c) a third surface-active agent having an HLB in a range of about 14 to about 33;
- d) a coupling agent;
- e) a coalescing solvent;
- and
- f) wherein the first surface agent, second surface agent and third surface agent are comprised of nonionic ethoxylated alcohols and further wherein the second surface agent is a branched alcohol EO/PO block copolymer.
A chemical composition comprising:
- a) a first surface-active agent having an HLB in a range of about 5 to about 9;
- b) a second surface-active agent having an HLB in a range of about 11 to about 13;
- c) a third surface-active agent having an HLB in a range of about 14 to about 33;
- d) a coupling agent;
- e) a coalescing solvent;
- and
- f) wherein the first surface agent, second surface agent and third surface agent are comprised of nonionic ethoxylated alcohols and further wherein the third surface agent is a polyoxyethylene (9) decyl ether.
A chemical composition comprising:
- a) a first surface-active agent having an HLB in a range of about 5 to about 9;
- b) a second surface-active agent having an HLB in a range of about 11 to about 13;
- c) a third surface-active agent having an HLB in a range of about 14 to about 33;
- d) a coupling agent;
- e) a coalescing solvent;
- and
- f) wherein the coupling agent is a C21 dicarboxcylic fatty acid.
A chemical additive for use in combination with a treatment fluid for removing precipitated material from an oil well including, asphaltenes and paraffins, deposited on casing and related equipment of the oil well and adjacent formations through which crude oil and co-produced water enters the well comprising:
- a) a first surface-active agent having an HLB in a range of about 5 to about 9;
- b) a second surface-active agent having an HLB in a range of about 11 to about 13;
- c) a third surface-active agent having an HLB in a range of about 14 to about 33;
- d) a coupling agent;
- e) a coalescing solvent;
- and
- f) wherein the first surface agent, second surface agent and third surface agent are comprised of nonionic ethoxylated alcohols and further wherein the second surface agent is a branched alcohol EO/PO block copolymer.
A chemical additive for use in combination with a treatment fluid for removing precipitated material from an oil well including, asphaltenes and paraffins, deposited on casing and related equipment of the oil well and adjacent formations through which crude oil and co-produced water enters the well comprising:
- a) a first surface-active agent having an HLB in a range of about 5 to about 9;
- b) a second surface-active agent having an HLB in a range of about 11 to about 13;
- c) a third surface-active agent having an HLB in a range of about 14 to about 33;
- d) a coupling agent;
- e) a coalescing solvent;
- and
- f) wherein the first surface agent, second surface agent and third surface agent are comprised of nonionic ethoxylated alcohols and further wherein the third surface agent is polyoxyethylene (9) decyl ether.
A chemical additive for use in combination with a treatment fluid for removing precipitated material from an oil well including, asphaltenes and paraffins, deposited on casing and related equipment of the oil well and adjacent formations through which crude oh and co-produced water enters the well comprising:
- a) a first surface-active agent having an HLB in a range of about 5 to about 9;
- b) a second surface-active agent having an HLB in a range of about 11 to about 13;
- c) a third surface-active agent having an HLB in a range of about 14 to about 33;
- d) a coupling agent;
- e) a coalescing solvent;
- and
- f) wherein the coupling agent is a C21 dicarboxcylic fatty acid.
A chemical additive used in combination with a treatment fluid for removing precipitated material from a well comprising:
- a) a first surface-active agent having an HLB in a range of about 5 to about 9;
- b) a second surface-active agent having an HLB in a range of about 11 to about 13;
- c) a third surface-active agent having an HLB in a range of about 14 to about 33;
- d) a coupling agent;
- e) a coalescing solvent;
- and
- f) wherein the first surface agent, second surface agent and third surface agent are comprised of nonionic ethoxylated alcohols and further wherein the second surface agent is a branched alcohol EO/PO block copolymer.
A chemical additive used in combination with a treatment fluid for removing precipitated material from a well comprising:
- a) a first surface-active agent having an HLB in a range of about 5 to about 9;
- b) a second surface-active agent having an HLB in a range of about 11 to about 13;
- c) a third surface-active agent having an HLB in a range of about 14 to about 33;
- d) a coupling agent;
- e) a coalescing solvent;
- and
- f) wherein the first surface agent, second surface agent and third surface agent are comprised of nonionic ethoxylated alcohols and further wherein the third surface agent is polyoxyethylene (9) decyl ether.
A chemical additive used in combination with a treatment fluid for removing precipitated material from a well comprising:
- a) a first surface-active agent having an HLB in a range of about 5 to about 9;
- b) a second surface-active agent having an HLB in a range of about 11 to about 13;
- c) a third surface-active agent having an HLB in a range of about 14 to about 33;
- d) a coupling agent;
- e) a coalescing solvent;
- and
- f) wherein the coupling agent is a C21 dicarboxcylic fatty acid.
Dependencies are inferred from the claim text.