Organofunctional compounds for shale stabilization of the aqueous dispersed phase of non-aqueous based invert emulsion drilling system fluids
AssigneeBaker Hughes Incorporated
InventorsJerry L. Summerhill, Michael A. Jarrett, Alexander J. McKellar, David B. Young, Patrick E. Grover, William J. Gusler
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Abstract
Invert emulsion drilling system fluids comprising an oleaginous continuous phase and a non-oleaginous dispersed phase, the dispersed phase comprising organofunctional compound(s) effective to provide shale inhibition. The organofunctional compound(s) may be used either as a supplement to or as a substitute for metallic salts.
Claims79
An invert emulsion drilling system fluid with effective rheology and fluid loss control properties, said drilling system fluid comprising an oleaginous continuous phase and a non-oleaginous dispersed phase, said dispersed phase comprising an amount of organofunctional compound effective to provide shale inhibition, said organofunctional compound comprising an active ingredient selected from the group consisting of triethanolamine, alkylenediamine, alkylenediamine salts, and combinations thereof, said invert emulsion drilling fluid further comprising a quantity of a polyolefin amide alkene amine.
An invert emulsion drilling system fluid with effective rheology and fluid loss control properties, said drilling system fluid comprising an oleaginous continuous phase and a non-oleaginous dispersed phase, said dispersed phase comprising an amount of organofunctional compound effective to provide shale inhibition, said organofunctional compound comprising an active ingredient selected from the group consisting of diaminocyclohexane, salts of diaminocyclohexane, and combinations thereof.
An invert emulsion drilling system fluid with effective rheology and fluid loss control properties, said drilling system fluid comprising an oleaginous continuous phase and a non-oleaginous dispersed phase, said dispersed phase comprising an amount of hexamethylenediamine effective to provide shale inhibition, wherein said oleaginous continuous phase comprises olefins selected from the group consisting of isomerized olefins, linear alpha olefins, and combinations thereof, a majority of said olefins having 16 carbon atoms or more.
An invert emulsion drilling system fluid with effective rheology and fluid loss control properties, said drilling system fluid comprising an oleaginous continuous phase and a non-oleaginous dispersed phase, said dispersed phase comprising an amount of hexamethylenediamine effective to provide shale inhibition and, said invert emulsion drilling system fluid further comprising a quantity of a polyolefin amide alkene amine.
An invert emulsion drilling system fluid with effective rheology and fluid loss control properties, said drilling system fluid comprising an oleaginous continuous phase and a non-oleaginous dispersed phase, said oleaginous continuous phase comprising olefins selected from the group consisting of isomerized olefins, linear alpha olefins, and combinations thereof, a majority of said olefins having 16 carbon atoms or more, said dispersed phase comprising an amount of organofunctional compound effective to provide shale inhibition, said organofunctional compound comprising an active ingredient selected from the group consisting of urea, salts of urea, and combinations thereof.
An invert emulsion drilling system fluid with effective rheology and fluid loss control properties, said drilling system fluid comprising an oleaginous continuous phase and a non-oleaginous dispersed phase, said dispersed phase comprising an amount of organofunctional compound comprising a quantity and type of exchangeable groups effective to provide shale inhibition, said invert emulsion drilling fluid further comprising a quantity of polyolefins amide alkene amine.
An invert emulsion drilling system fluid with effective rheology and fluid loss control properties, said drilling system fluid comprising an oleaginous continuous phase and a non-oleaginous dispersed phase, said dispersed phase comprising an amount of at least one organofunctional compound comprising at least two primary functional groups comprising a quantity and type of exchangeable groups effective to provide shale inhibition, said invert emulsion drilling system fluid further comprising a quantity of polyolefins amide alkene amine.
A method for reducing the concentration of inorganic salts required to provide shale inhibition during drilling operations using invert emulsion drilling system fluids comprising an oleaginous continuous phase and a non-oleaginous dispersed phase, said method comprising
- providing said non-oleaginous dispersed phase of said fluid with an amount of organofunctional compound effective to provide shale inhibition;
- and,
- providing said invert emulsion drilling system fluid with a quantity of polyolefins amide alkene amine.
A method for reducing the concentration of inorganic salts required to provide shale inhibition during drilling operations using invert emulsion drilling system fluids, said method comprising:
- providing said invert emulsion drilling system fluid selected from the group consisting of a drilling fluid and a drill-in fluid, said invert emulsion drilling system fluid comprising an oleaginous continuous phase and a non-oleaginous dispersed phase;
- and,
- providing said non-oleaginous dispersed phase with an amount of organofunctional compound comprising an active ingredient selected from the group consisting of diaminocyclohexane, salts of diaminocyclohexane, and combinations thereof;
- and
- performing drilling operations using said invert emulsion drilling system fluid, said organofunctional compound providing effective shale inhibition.
A method for reducing the concentration of inorganic salts required to provide shale inhibition during drilling operations using invert emulsion drilling system fluids, the method comprising:
- providing said invert emulsion drilling system fluid selected from the group consisting of a drilling fluid and a drill-in fluid, said invert emulsion drilling system fluid comprising an oleaginous continuous phase and a non-oleaginous dispersed phase and,
- providing said non-oleaginous dispersed phase with an amount of hexamethylene diamine effective to provide shale inhibition;
- and
- performing drilling operations using said invert emulsion drilling system fluid, said hexamethylene diamine providing effective shale inhibition.
A method for reducing the concentration of inorganic salts required to provide shale inhibition during drilling operations using invert emulsion drilling system fluids, the method comprising:
- providing said invert emulsion drilling system fluid comprising an oleaginous continuous phase and a non-oleaginous dispersed phase;
- providing said non-oleaginous dispersed phase with an amount of organofunctional compound effective to provide shale inhibition, said organofunctional compound comprising exchangeable cations derived from primary functional groups selected from the group consisting of nitrogen containing groups, oxygen containing groups, sulfur containing groups, and phosphorus containing groups;
- and,
- performing drilling operations selected from the group consisting of rotary drilling operations and drill-in operations using said invert emulsion drilling system fluid, said effective shale inhibition being provided using a reduced concentration of metallic salt(s) compared to the amount of metallic salt(s) required to provide the same effective shale inhibition using said invert emulsion drilling system fluid in the absence of said organofunctional compound.
A method for reducing the concentration of inorganic salts required to provide shale inhibition during drilling operations using invert emulsion drilling system fluids, the method comprising:
- providing said invert emulsion drilling system fluid comprising an oleaginous continuous phase and a non-oleaginous dispersed phase;
- providing said non-oleaginous dispersed phase with an amount of organofunctional compound comprising exchangeable cations effective to provide shale inhibition;
- and;
- performing drilling operations using said invert emulsion drilling system fluid without adding inorganic salt to said invert emulsion drilling system fluid.
A method for reducing the concentration of inorganic salts required to provide shale inhibition during drilling operations using invert emulsion drilling system fluids, said method comprising:
- providing said invert emulsion drilling system fluid comprising an oleaginous continuous phase and a non-oleaginous dispersed phase;
- providing said non-oleaginous dispersed phase with an amount of organofunctional compound effective to provide shale inhibition;
- providing said invert emulsion drilling system fluid with a quantity of a polyolefin amide alkene amine;
- and,
- performing drilling operations using said invert emulsion drilling system fluid.
Dependencies are inferred from the claim text.