Abstract: Elastomer blends comprising mixtures of partially fluorinated elastomers, such as tetrafluoroethylene propylene elastomers (FEPM or TFEP) and fluorocarbon rubbers, such as vinylidene fluoride-based elastomers (FKM or FEP), can be prepared using two-roll mills, internal mixers, or other mixing technique and can be molded into seals, gaskets, o-rings or other articles using extrusion, injection molding, compression molding or the like. The resultant elastomeric articles can provide good sealing performance, including at moderate or low temperatures, and exhibit good chemical compatibility and resistance when exposed to common wellbore environments. In some cases, the elastomer blends can provide performance characteristics previously only available from perfluorinated elastomers (FFKM), but without requiring the complex processing conditions associated with preparing perfluorinated elastomers.

Abstract: A downhole hydraulic frac tool for use in a hydraulic fracturing system, the frac tool comprising a dissolvable frac tool member that includes a water-dissolvable composition, the composition including: a water-soluble thermoplastic polymer; and water-soluble bulk metallic glass (BMG) particles, wherein: the BMG particles are embedded within a matrix of the water-soluble thermoplastic polymer, the BMG particles have a greater tensile strength than a tensile strength the water-soluble thermoplastic polymer, and the BMG particles have a higher fracture toughness than a fracture toughness the water-soluble thermoplastic polymer. A method of manufacturing a dissolvable downhole hydraulic frac tool member and, a hydraulic fracturing system associated with a wellbore in which dissolvable downhole hydraulic frac tools of the disclosure can be used, are also disclosed.

Abstract: A seal for use within a hydrocarbon environment including a core and a shell that is coupled to the core. The core includes an elastomeric core material with a first modulus. The shell includes a shell material with a second modulus that is lesser than the first modulus. The core and the shell can be positioned to generate a pressure and electrical seal at a sealing interface.

Abstract: Swell packer assemblies for providing a physical barrier inside a wellbore, and methods of using such swell packer assemblies, are provided. In one embodiment, the swell packer includes a substantially tubular member; and a seal element disposed on the substantially tubular member, the seal element including an elastomeric swellable material that comprises: a closed cell material having a plurality of pore spaces therein; and a compressible gas located within at least a portion of the plurality of pore spaces.

Abstract: A sealing element can be used to create a seal in a wellbore or components of a downhole tool. The sealing element can include an elastomer matrix and a substance embedded within the elastomer that expands at a phase change temperature. The substance can be an organic-based substance, such as a polymeric plastic, a thermoplastic, or a wax. The organic-based substance can expand at a temperature greater than or equal to the phase change temperature. The substance can also be a metal-based substance. The metal-based substance can expand at a temperature less than or equal to the phase change temperature. After expansion, the substance can fill small gaps or cracks formed in the elastomer matrix from temperature fluctuations. The sealing element can be included on a downhole tool. The sealing element can be an O-ring or a gasket or included on packer assembly, a plug, or a liner hanger.

Abstract: The present disclosure provides elastomer blends comprising mixtures of partially fluorinated elastomers, such as tetrafluoroethylene propylene elastomers (FEPM or TFEP) and fluorocarbon rubbers, such as vinylidene fluoride-based elastomers (FKM or FEP). The elastomer blends can be prepared using two-roll mills, internal mixers, or other mixing technique and can be molded into seals, gaskets, o-rings or other articles using extrusion, injection molding, compression molding or the like. The resultant elastomeric articles can provide good sealing performance, including at moderate or low temperatures, and exhibit good chemical compatibility and resistance when exposed to common wellbore environments. In some cases, the elastomer blends can provide performance characteristics previously only available from perfluorinated elastomers (FFKM), but without requiring the complex processing conditions associated with preparing perfluorinated elastomers.