摘要:
The invention relates to a method of stabilizing the bonding agent gelation time in the consolidation of a geological formation in the presence of one or more catalytically active substances, in which method a bonding agent is infiltrated into the formation, a portion of the infiltrated bonding agent is optionally expelled by flushing with a gas or a liquid, and the bonding agent remaining in the formation is cured. the bonding agent comprises a mixture of a) a heterocondensate, obtainable by hydrolysis and condensation of at least one hydrolyzable silicon compound and at least one metal, phosphorus or boron compound, the metal being selected from Al, Ge, Sn, Pb, Ti, Mg, Li, V, Nb, Ta, Zr and Hf, B) at least one organic polymerizable monomer or oligomer comprising a C-C double bond, and C) at least one thermal polymerization initiator without peroxide function.
摘要:
A shunt rivet for implantation in the aorta and inferior vena cava to treat chronic obstructive pulmonary disease, and a method of treating chronic obstructive pulmonary disease.
摘要:
Composition and methods using the compositions are disclosed, where the compositions include heterocyclic aromatic amines, substituted heterocyclic aromatic amines, poly vinyl heterocyclic aromatic amines, co-polymers of vinyl heterocyclic aromatic amine and non amine polymerizable monomers (ethylenically unsaturated mononers and diene monomers), or mixtures or combinations thereof reacted with sulfonic acids, alkyl sulfonic acids, sulfosuccinates, sulfamic acids, sulfuric acids or partially neutralized amine or other alkali sulfonate and/or reacted with alpha hydroxyl carboxcylic acids which form coatings that alter self-aggregating properties and/or aggregation propensities of the particles and surfaces. Furthermore, the coating can be used to improve filtration of fluids through particulate matter and it is found that the coating will increase hydrocarbon liquid and gas flow through or over treated particulates and surfaces.
摘要:
A reactive resin composition is described, comprising a resin constituent (A) comprising a free-radically polymerizable compound (a-1), a compound (a-2) which can react with an amine, and a bridging compound (a-3) having at least two reactive functionalities, one of which can be free-radically (co)polymerize and one of which can be react with an amine, and a hardener constitute (H) comprising at least one dialkyl peroxide (h-1) and at least one amine (h-2) where the resin constituent (A) and the hardener (H) or the resin constituent (A) and at least one dialkyl peroxide (h-1) and at least one amine (h-2) of the hardener (H) are spatially separated from one another, in order to prevent reaction prior to mixing of these components, which is characterized in that the hardener constituent (H) further comprises an accelerator mixture (B) consisting of a copper compound (b-1) and a 1,3-dicarbonyl compound (b-2), with the proviso that the resin composition is suitable for use for construction purposes, preferably for securing anchor thread bars, iron reinforcements, bushing or screws in boreholes in all kinds of substrata.
摘要:
A method of treating a wellbore may include emplacing in at least a selected region of the wellbore a formulation that includes at least one diene pre-polymer; at least one reactive diluent; at least one inert diluent comprising an oleaginous liquid or a mutual solvent; and at least one initiator; and initiating polymerization of the at least one diene pre-polymer and the at least one reactive diluent to form a composite material in the selected region of the wellbore.
摘要:
A method of servicing a wellbore in a subterranean formation comprising tethering a relative permeability modifier to one or more surfaces of the formation via a coupling agent. A method of servicing a wellbore in a subterranean formation comprising introducing into the wellbore a first wellbore servicing fluid comprising a coupling agent; allowing the coupling agent to associate with the surface of the formation; introducing into the wellbore a second wellbore servicing fluid comprising a relative permeability modifier; and allowing the relative permeability modifier to associate with the coupling agent. A method of servicing a wellbore in a subterranean formation comprising placing into the formation a wellbore servicing fluid comprising a coupling agent and a relative permeability modifier; and allowing the relative permeability modifier to associate with the formation.
摘要:
A shunt rivet for implantation in the aorta and inferior vena cava to treat chronic obstructive pulmonary disease, and a method of treating chronic obstructive pulmonary disease.
摘要:
A shunt rivet for implementation in the aorta and inferior vena cava to treat chronic obstructive pulmonary disease, and a method of treating chronic obstructive pulmonary disease.
摘要:
A method of stabilizing an underground formation surrounding a borehole comprising placing a treatment fluid in the formation, the treatment fluid comprising cross-linkable polymer and a cross-linking agent, and allowing the treatment fluid to gel in-situ, characterized in that after placement of the treatment fluid in the formation, an activator fluid is pumped into the well to bring about cross linking of the polymer to form the gel.
摘要:
The present invention provides 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 residual matrix strength of said sand particles whereby to reduce or prevent their migration whilst minimising any decrease in the permeability of said formation. Polymer materials suitable for use in the method of the invention include polyaminoacids, poly (diallyl ammonium salts) and mixtures thereof.