Abstract: A method of servicing a wellbore in contact with a subterranean formation, comprising: placing a wellbore servicing fluid comprising a crosslinkable polymer system and a filler into a lost circulation zone within the wellbore. A method of blocking the flow of fluid through a lost circulation zone in a subterranean formation comprising placing a first composition comprising a packing agent into the lost circulation zone, placing a second composition comprising a crosslinkable polymer system and a filler into the lost circulation zone, and allowing the compositions to set into place.

Abstract: A lost circulation composition for use in a wellbore comprising a crosslinkable polymer system and a filler.

Abstract: A method of servicing a wellbore comprising preparing a liquid plug, allowing the liquid plug to polymerize into a highly deformable elastic plug, and placing the highly deformable elastic plug into a wellbore. A method of servicing a wellbore comprising preparing a liquid plug, allowing the liquid plug to polymerize into a highly deformable elastic plug, combining the highly deformable elastic plug with at least one conventional plug to form plug combination, and placing the plug combination into a wellbore. A method of servicing a wellbore comprising preparing a liquid plug, allowing the liquid plug to polymerize into a highly deformable elastic plug, placing the highly deformable elastic plug into a wellbore, and deforming the highly deformable elastic plug.

Abstract: Methods of servicing a wellbore in contact with a subterranean formation include passing an ester-based fluid into the wellbore and reducing a temperature of the ester-based fluid by an amount effective to cause the ester-based fluid to set, e.g., by from about 10° F. to about 20° F. The ester-based fluid includes a water in ester-based oil emulsion, a pH controlling additive, e.g., hydrated lime, in the water-phase, and an emulsifier to stabilize the pH controlling additive. Cooling the ester-based fluid causes the emulsion to destabilize, resulting in the release of the pH controlling additive. This release raises pH of the ester-based fluid by an effective amount to cause it to set. Wellbore servicing fluids comprising the foregoing ester-based fluid may be employed as environmentally friendly sealants or spotting fluids in wellbores.

Abstract: The present invention relates to methods of chemically generating gas in aqueous fluids utilized in the drilling and completion of wells such as drilling fluids, spacer fluids, and aqueous acid solutions. In one embodiment, the invention provides a method of preventing the formation of fractures in a subterranean formation during a drilling operation. In other embodiments, the present invention provides methods of separating a first fluid and a second fluid in a subterranean formation; methods of forming lightweight well treatment fluids; methods of enhancing the permeability of a subterranean zone; lightweight drilling fluids; lightweight spacer fluids; foamed aqueous acidic well treatment fluids; and methods of making foamed aqueous and aqueous acidic well treatment fluids.

Abstract: Well completion spacer fluids containing fibers and methods of using the spacer fluids are provided. A method of the invention for displacing a first fluid from a well bore with an incompatible second fluid comprises the following steps. A spacer fluid is placed between the first and second fluids to separate the first and second fluids and to remove the first fluid from the walls of the well bore. Thereafter, the first fluid and the spacer fluid are displaced from the well bore with the second fluid. The spacer fluid comprises water, a weighting material, a dispersing agent, a suspending agent and friction reducer and fibers. The spacer fluid containing the components mentioned above is preferably also foamed.

Abstract: A method of cementing a casing in a wellbore with a tool having a plurality of holes therethrough connected at a lower end of the casing. The total cross-sectional area of the holes is preferably greater than the cross-sectional area of the inside of the casing. A plurality of stoppers are pumped in a leading edge of a cement slurry down an annulus between the casing and the wellbore to the tool where the stoppers engage the holes to hold the cement slurry in the annulus until the cement slurry hardens.

Abstract: A method of cementing a casing in a wellbore with a tool having a plurality of holes therethrough connected at a lower end of the casing. The total cross-sectional area of the holes is preferably greater than the cross-sectional area of the inside of the casing. A plurality of stoppers are pumped in a leading edge of a cement slurry down an annulus between the casing and the wellbore to the tool where the stoppers engage the holes to hold the cement slurry in the annulus until the cement slurry hardens.

Abstract: Well completion spacer fluids containing fibers and methods of using the spacer fluids are provided. A method of the invention for displacing a first fluid from a well bore with an incompatible second fluid comprises the following steps. A spacer fluid is placed between the first and second fluids to separate the first and second fluids and to remove the first fluid from the walls of the well bore. Thereafter, the first fluid and the spacer fluid are displaced from the well bore with the second fluid. The spacer fluid comprises water, a weighting material, a dispersing agent, a suspending agent and friction reducer and fibers. The spacer fluid containing the components mentioned above is preferably also foamed.

Abstract: The present invention relates to methods of chemically generating gas in aqueous fluids utilized in the drilling and completion of wells such as drilling fluids, spacer fluids, and aqueous acid solutions. In one embodiment, the invention provides a method of preventing the formation of fractures in a subterranean formation during a drilling operation. In other embodiments, the present invention provides methods of separating a first fluid and a second fluid in a subterranean formation; methods of forming lightweight well treatment fluids; methods of enhancing the permeability of a subterranean zone; lightweight drilling fluids; lightweight spacer fluids; foamed aqueous acidic well treatment fluids; and methods of making foamed aqueous and aqueous acidic well treatment fluids.

Abstract: Improved methods of generating gas in and foaming aqueous well fluids introduced into a subterranean zone are provided. A method of the invention includes the steps of combining with an alkaline aqueous well fluid one or more gas generating chemicals and a mixture of foaming and foaming stabilizing surfactants so that the gas generating chemical or chemicals react with the alkaline aqueous well fluid and gas and foam are formed in the well fluid while it is being pumped, and then pumping the well fluid into the subterranean zone.

Abstract: Oil-based settable spotting fluid compositions for cementing in wells and subterranean formations are provided. The oil-based settable spotting fluid compositions basically comprise an oil external emulsion comprising oil, water and an emulsifying surfactant, a hydraulically settable component and a de-emulsifying surfactant for de-emulsifying the oil-external emulsion when the emulsion is cured.

Abstract: Methods for cementing a pipe string in a well bore containing oil-based drilling fluid using oil-based settable spotting fluid compositions are provided. The oil-based settable spotting fluid compositions basically comprise an oil external emulsion comprising oil, water and an emulsifying surfactant; a hydraulically settable component; and a de-emulsifying surfactant for de-emulsifying the oil-external emulsion when the emulsion is cured.

Abstract: Methods for drilling well bores and cementing a pipe string in the well bores using oil-based settable drilling fluids are provided. The oil-based settable drilling fluid compositions basically comprise an oil external emulsion comprising oil, water and an emulsifying surfactant; a hydraulically settable component; and a de-emulsifying surfactant for de-emulsifying the oil-external emulsion when the emulsion is cured.

Abstract: Improved methods of generating gas in and foaming aqueous well fluids introduced into a subterranean zone are provided. A method of the invention includes the steps of combining with an alkaline aqueous well fluid one or more gas generating chemicals and a mixture of foaming and foaming stabilizing surfactants so that the gas generating chemical or chemicals react with the alkaline aqueous well fluid and gas and foam are formed in the well fluid while it is being pumped, and then pumping the well fluid into the subterranean zone.

Abstract: A flexible pouch is provided that includes a first panel, a second panel, and a third panel. The first, second, and third panels are sealed together to form the pouch which includes a first and second side. Each panel is made of a laminate material that can be heat sealed or sonic welded together to form the flexible pouch. One panel further comprises a frangible piercing point designed to be pierced by a straw. The frangible piercing point is made by applying laser energy in a desired pattern to vaporize the outer polyester portion of the laminate material of the pouch. Only laminate material from the outside of the selected panel is removed using the laser to create the frangible piercing point.

Abstract: Oil-based settable spotting fluid compositions for cementing in wells and subterranean formations are provided. The oil-based settable spotting fluid compositions basically comprise an oil external emulsion comprising oil, water and an emulsifying surfactant, a hydraulically settable component and a de-emulsifying surfactant for de-emulsifying the oil-external emulsion when the emulsion is cured.

Abstract: Methods for cementing a pipe string in a well bore containing oil-based drilling fluid using oil-based settable spotting fluid compositions are provided. The oil-based settable spotting fluid compositions basically comprise an oil external emulsion comprising oil, water and an emulsifying surfactant; a hydraulically settable component; and a de-emulsifying surfactant for de-emulsifying the oil-external emulsion when the emulsion is cured.

Abstract: Methods for drilling well bores and cementing a pipe string in the well bores using oil-based settable drilling fluids are provided. The oil-based settable drilling fluid compositions basically comprise an oil external emulsion comprising oil, water and an emulsifying surfactant; a hydraulically settable component; and a de-emulsifying surfactant for de-emulsifying the oil-external emulsion when the emulsion is cured.