摘要:
Verfahren zum Stabilisieren unterirdischer Formationen aus oxidischen anorganischen Materialien, wobei man härtbaren Formulierungen, die veretherte Harnstoff-FormaldehydHarze umfassen in die unterirdische Formation injiziert und unter den in der Formation herrschenden Temperaturen aushärtet.
摘要:
The present application describes improved compositions for wellbore fluids for use in downhole (e.g. oilwell) applications. The compositions comprise a blocked isocyanate (BI) component having a tolerance improving group (such as a hydrophilic group, e.g. an amine) bonded to it, and an active hydrogen component. When the BI group is unblocked, it reacts with the active hydrogen component to form a gel which, by virtue of the tolerance improving group, is more tolerant to contaminants (such as aqueous inorganic salts or brines) than the corresponding gel forms from unmodified BI. The application also relates to methods of treating an earthen formation using such a composition.
摘要:
Methods and systems are disclosed for well completion and/or production, where an aggregating, agglomerating or conglomerating composition is injected into a producible formation, zone or interval thereof to alter an aggregation or zeta potential of formation surfaces and particulate to increase a maximum sand free production rate.
摘要:
Composition including a fluid and a plurality of solid particles dispersed in the fluid. The plurality of solid particles includes a thermoplastic composition having a softening temperature in a range from 50 °C to 180 °C and a curable resin; optionally at least some of the particles in the plurality of solid particles comprise both the thermoplastic composition and the curable resin. The solid particles have an average aspect ratio of less than 2:1. A method of modifying a wellbore within a geological formation is also disclosed. The method includes introducing the composition into the wellbore. A method of making a plurality of particles, for example, to use in the composition, is also disclosed.
摘要:
Methods are disclosed for improved sand control, fines control, load recovery and well productivity, where the compositions comprise reaction products of an amine and a phosphate-containing compound.
摘要:
The invention provides a material comprising : a core made of a solid material; a first layer surrounding the core made of a swellable material able to swell in contact with a fluid ; a second layer surrounding the first layer made of a glue material able to glue to a third element.
摘要:
An aqueous, viscoelastic treating fluid gelled with a crosslinked guar or guar derivative is stabilized and improved with an effective amount of a glycol, such as ethylene glycol. These fluids are more stable in that viscosity is maintained, particularly at elevated temperatures. The additives may also increase viscosity to the point where less of a crosslinked guar or guar derivative gelling agent is required to maintain a given viscosity. These stabilized, enhanced, aqueous, viscoelastic fluids may be used as treatment fluids for subterranean hydrocarbon formations, such as in hydraulic fracturing.