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9033040 Use of composite of lightweight hollow core having adhered or embedded cement in cementing a well  
A lightweight composite having an activated surface contains a lightweight hollow core particle having cement grains which may be adhered to the hollow core or embedded in the surface of the...
9016373 Magnetorheological blowout preventer  
A Blowout Preventer comprising a housing, one or more magnets and a magnetic fluid is described. More particularly, a Magnetorheological Blowout Preventer with a Magnetorheological Ram Head that...
9006154 Methods for determining reactive index for cement kiln dust, associated compositions and methods of use  
A variety of methods and compositions are disclosed, including, in one embodiment, a method of treating a well comprising: providing a treatment fluid comprising a base fluid and a blended...
9004169 Method of isolating and completing multiple zones within a wellbore  
A gel barrier may be created within an annulus in a one-step operation by combining two or more solutions within the annulus. The two solutions may include a first solution, such as a silicate...
8997868 Methods of using nanoparticle suspension aids in subterranean operations  
Methods of drilling wellbores, placing proppant packs in subterranean formations, and placing gravel packs in wellbores may involve fluids, optionally foamed fluids, comprising nanoparticle...
8991497 Well treatment  
The following describes a novel and alternative mechanism in regards to releasing reactive chemicals. Namely, utilizing shells containing multiple emulsions that can be blended with the base...
8991495 Methods for protecting a hydrocarbon-producing zone of a subterranean formation using a relative permeability modifier  
A relative permeability modifier may be used to protect a hydrocarbon-producing zone of a subterranean formation without detrimentally affecting its ability to produce hydrocarbons. Methods for...
8985208 Formation treatment  
Method of consolidating sand in a subterranean formation by contacting the sand in a first location in the presence of water with a slurry in a liquid medium of cement of average particle size...
8950438 Method and compositions for delivery of a concentrated quantity of sealing elements to a leak site in a vessel  
A method of delivering a concentrated quantity of sealing elements to a leak site in a vessel includes deploying a flexible body of material and at least one sealing element into fluid flowing...
8950486 Acid-soluble cement compositions comprising cement kiln dust and methods of use  
The present invention relates to acid-soluble cement compositions that comprise cement kiln dust (“CKD”) and associated methods of use. An embodiment provides a method of cementing comprising:...
8944165 Cement composition containing an additive of a pozzolan and a strength retrogression inhibitor  
A cement composition comprises: cement; water; and an additive, wherein the additive is a pozzolan and a strength-retrogression inhibitor, and wherein a mixture consisting essentially of: the...
8936086 Methods of fluid loss control, diversion, and sealing using deformable particulates  
Method including the steps of providing a treatment fluid that comprises a base fluid and polymeric particulates and introducing the treatment fluid into a subterranean formation having a...
8936081 Compositions and methods for servicing subterranean wells  
Fluid compositions containing a silica-particle suspension with no intrinsic cementitious properties may be pumped into a wellbore. Upon making downhole contact with previously placed well cements...
8936087 Methods and compositions for sand control in injection wells  
Methods including the steps of providing an injection well having unconsolidated particulates in one or more formation intervals along the wellbore that accept injection fluid; providing a...
8905133 Methods of zonal isolation and treatment diversion  
Methods of treating a subterranean formation penetrated by a well bore, by providing a treatment fluid comprising a blend including a first amount of particulates having a first average particle...
8899332 Method for building and forming a plug in a horizontal wellbore  
A method for building a plug in a horizontal wellbore using a fluid pill containing a suspended well treatment agent. The well treatment agent contains an ultra lightweight (ULW) deformable core...
8899328 Resin sealant for zonal isolation and methods for making and using same  
Epoxy-based zonal isolation compositions are capable of being adjusted by varying the epoxy-based compositions for isolating zones in borehole of oil and gas wells under high-temperature,...
8895487 Cement composition containing an additive of a pozzolan and a strength retrogression inhibitor  
A cement composition comprises: cement; water; and an additive, wherein the additive is a pozzolan and a strength-retrogression inhibitor, and wherein a mixture consisting essentially of: the...
8887809 Treatment fluids comprising transient polymer networks  
Treatment fluid compositions may comprise transient polymer networks for use in methods related to subterranean applications. In one aspect, a method may include providing a treatment fluid...
8889603 Compositions and methods for diverting injected fluids to achieve improved hydrocarbon fluid recovery  
The present disclosure is directed to compositions and methods that may be used for enhanced oil recovery, for modifying the permeability of subterranean formations and for increasing the...
8881815 Well treatment  
A method for the treatment of a subterranean formation which contains sand particles, said method comprising contacting said formation with a positively charged polymer capable of increasing the...
8869894 Plugging thief zones and fractures by in-situ and in-depth crystallization for improving water sweep efficiency of sandstone and carbonate reservoirs  
The present invention relates to methods and compositions that can be used to delay crystallization of a treatment solution so that thief zones or fractures are plugged in subterranean formations...
8857513 Refracturing method for plug and perforate wells  
The method of the present invention deploys controlled electrolytic material, CEM, into the existing perforations to seal them and then using a bottom hole assembly, BHA, that isolates a portion...
8851173 Set-delayed cement compositions comprising pumice and associated methods  
A variety of methods and compositions are disclosed, including, in one embodiment, a method of cementing in a subterranean formation, comprising: providing a set-delayed cement composition...
8839859 Water absorbing polymers for treatment of brines and water-based drilling fluids  
A method for removing water from a wellbore fluid may include the steps of contacting a wellbore fluid with a water absorbing polymer, where the wellbore fluid includes an aqueous fluid, allowing...
8834624 Modified cement composition, preparation and application thereof  
Light to ultra-light cement compositions with modified rheological properties. The cement composition includes cement, hydrophobic nano-silica, at least one additive and a sufficient amount of...
8820405 Segregating flowable materials in a well  
A method of segregating flowable materials in conjunction with a subterranean well can include segregating flowable cement from a fluid by placing a flowable barrier substance between the cement...
8813873 Enhanced smear effect fracture plugging process for drilling systems  
This invention relates to drilling a well, particularly an oil or gas well, where casing or liner will be installed to stabilize the wellbore. The present invention is intended to permit more...
8807217 Methods for using or removing unused rock debris from a passageway through subterranean strata using rock breaking apparatus  
A method for using or removing unused rock debris from a bored passageway through subterranean strata using at least one rock breaking apparatus engaged with a conduit string and placed within the...
8807216 Cement compositions comprising particulate foamed elastomers and associated methods  
Methods of subterranean cementing involving cement compositions comprising particulate foamed elastomers and associated methods are provided. In one embodiment, the methods comprise introducing a...
8789597 Water self-shutoff tubular  
An apparatus for controlling water ingress into a pipe useful in the production of hydrocarbons from underground reservoirs comprises a multi-layer tubular, the multi-layered tubular comprising an...
8776882 Engineered fibers for well treatments  
Mixtures of fibers and solid particles are effective for curing fluid losses and lost circulation in a subterranean well. Stiff fibers are more effective than flexible ones; however, mixtures of...
8739872 Lost circulation composition for fracture sealing  
A lost circulation material and method for well treatment employing the material that is effective at sealing or plugging fractured zones and has utility over a wide range of temperatures,...
8733440 Well cement compositions comprising biowaste ash and methods of use  
Cement compositions containing biowaste ash and methods of cementing in subterranean formations using such cement compositions. Examples of suitable biowaste ash include agricultural waste ash,...
8733441 Sealing of thief zones  
The present invention provides a method for selectively sealing a thief zone in a hydrocarbon reservoir located in a calcium-rich formation and penetrated by a borehole comprising injecting into...
8728229 Cement slurry composition  
The present invention provides a cement slurry composition, containing a hydraulic cement material, (A) a first water-soluble low molecular weight compound and (B) a second water-soluble low...
8720556 Methods for initiating new fractures in a completed wellbore having existing fractures present  
Fracturing operations can be problematic in completed wellbores containing at least one existing fracture, since it can be difficult to seal an existing fracture and initiate a new fracture within...
8720562 Wellbore cementing compositions and methods of making and using same  
A method of cementing a wellbore comprising preparing a wellbore cementing composition comprising a cementitious materials and a modified biopolymer additive wherein the modified biopolymer...
8720560 Apparatus and method for cementing a borehole  
In aspects, the disclosure provides a method for cementing a borehole that includes selecting a location in the borehole for cementing. The method further includes providing a cement slurry...
8708044 Process for consolidating sand  
Method of treating a subterranean hydrocarbon-bearing formation comprising unconsolidated or poorly consolidated particulates, by contacting the formation with a solution or a dispersion of an...
8703657 Inverse emulsion polymers as lost circulation material  
A sealant composition comprising an inverse emulsion polymer and methods of servicing a wellbore using the same are disclosed. In one embodiment, a method of servicing a wellbore that penetrates a...
8689894 Method and composition for zonal isolation of a well  
The invention provides a system comprising: a tubular containing a first surface comprising a coating made of a first swellable material coating said first surface, wherein said coating has a...
8689869 Method for providing thixotrophy to fluids downhole  
An encapsulated thixotropy agent may be added to aqueous well service fluids. Such fluids include drilling fluids, cement slurries and polymer pills. The well service fluid may be subjected to...
8684081 Zero-leakoff gel  
A silicate gel composition that is useful for sealing the face of a fracture of a formation. A method of sealing a face of a fracture of a formation with the silicate gel composition and diverting...
8672057 Method for controlling loss of drilling fluid  
Methods for drilling and treating for lost returns continuously while drilling are provided. High fluid loss drilling fluid is used, along with particulate material that forms an immobile mass in...
8672028 Settable compositions comprising interground perlite and hydraulic cement  
Methods and compositions are disclosed that comprise interground perlite and hydraulic cement. An embodiment provides a method of cementing comprising: providing a settable composition comprising...
8668019 Dissolvable barrier for downhole use and method thereof  
A plug is disposable in a well bore to block fluid from passing through the wellbore. The plug includes a body formed from water soluble glass. The body is dissolvable in water. A method of...
8662173 Plugging thief zones and fractures by in-situ and in-depth crystallization for improving water sweep efficiency of sandstone and carbonate reservoirs  
The present invention relates to methods and compositions that can be used to delay crystallization of a treatment solution so that thief zones or fractures are plugged in subterranean formations...
8657005 Systems and methods for hydraulic barrier formation to improve sweep efficiency in subterranean oil reservoirs  
Systems and methods for creating a hydraulic barrier at an interface between high and low permeability regions that may exist in high permeability-contrast subterranean formations. These systems...
8622127 Olefin reduction for in situ pyrolysis oil generation  
Methods for improving the quality of hydrocarbon fluids produced by in situ pyrolysis or mobilization of organic-rich rock, such as oil shale, coal, or heavy oil. The methods involve reducing the...