Abstract:
What is proposed is the use of a water-soluble hydrophobically associating copolymer as an additive in the development, exploitation and completion of underground mineral oil and natural gas deposits and in deep drillings, wherein the copolymer comprises (a) at least one monoethylenically unsaturated monomer (a) selected from H2C=C(R1)-R4-O-(-CH2-CH2-O-)k-(-CH2-CH(R3)-O-)i-R5 (I), and/or H2C=C(R1)-O-(-CH2-CH2-O-)k-R2 (II), and (b) at least one monoethylenically unsaturated, hydrophilic monomer (b) different from monomer (a), wherein the copolymer is obtainable through copolymerization of the monomers (a) and (b) in the presence of at least one surfactant (c).
Abstract:
processo para produzir um óleo mineral a presente invenção se refere a um processo para produzir óleo mineral a partir de formações subterrâneas, em que, em um estágio do processo, as regiões permeáveis da formação subterrânea são bloqueadas através da injeção de formulações aquosas de copolímeros a que se associam hidrofobicamente ao interior da formação.
Abstract:
The use of gelatin-based copolymers containing at least one grafted side chain formed from ethylenically unsaturated compounds as an anti-accretion additive is proposed for water-based drilling fluids in the development, exploitation and completion of underground mineral oil and natural gas deposits and in deep wells. These copolymers are water-soluble and have good biodegradability.
Abstract:
The present invention relates to a process for producing mineral oil from underground formations, wherein, in one process step, permeable regions of the underground formation are blocked by injecting aqueous formulations of hydrophobically associating copolymers into the formation.
Abstract:
The inventive water retention agents are outstandingly suitable as additives in construction chemical systems, and in the development, exploitation and completion of underground mineral oil and natural gas deposits, and in deep wells, the action thereof being particularly advantageous at elevated temperatures and due to their lack of influence on the rheological properties of the borehole muds.
Abstract:
The use of gelatin-based copolymers containing at least one grafted side chain formed from ethylenically unsaturated compounds as an anti-accretion additive is proposed for water-based drilling fluids in the development, exploitation and completion of underground mineral oil and natural gas deposits and in deep wells. These copolymers are water-soluble and have good biodegradability.
Abstract:
Lo que se propone es el uso de un copolímero hidrofóbicamente asociativo soluble en agua como un aditivo en el desarrollo, explotación y terminación de depósitos de aceite mineral y gas natural subterráneos y en perforaciones profundas, en donde el copolímero comprende (a) por lo menos un monómero monoetilénicamente no saturado (a) seleccionado de H2C=C(R1)-R4-O-(-CH2-CH2-O-)k-(-CH2-CH(R3)-O-)i-R5 (I) y/o H2C=C(R1)-O-(-CH2-CH2-O-)k-R2 (II) y (b) por lo menos un monómero hidrofílico, monoetilénicamente no saturado (b) diferente del monómero (a), en donde el copolímero es obtenido a través de la copolimerización de los monómeros (a) y (b) en la presencia de por lo menos un surfactante (c).
Abstract:
Los agentes de retención de agua de acuerdo con la invención son notablemente adecuados como aditivos en sistemas químicos de construcción y en el desarrollo, explotación y terminación de depósitos subterráneos de petróleo y gas natural y en pozos profundos, su efecto que es particularmente ventajoso a temperaturas incrementadas y debido a su falta de influencia sobre las propiedades reológicas de la suspensiones de pozos.