Abrégé

Disclosed are time controlled, hydrolytically degradable compositions that include a polyurethane; precipitated silica, carbon black, or a combination thereof; an organic acid adapted to facilitate degradation when the composition is contacted with water; a stabilizer; a first crosslinking agent; and an optional co-agent. The composition is adapted to degrade over a predetermined time period upon contact with water at a pH ranging from 5 to 8 and at a temperature ranging from 100° F. to 250° F.

Classes IPC  ?

• C09K 8/512 - Composés macromoléculaires contenant des agents de réticulation
• C04B 26/16 - Polyuréthanes
• C04B 24/04 - Acides carboxyliques; Leurs sels, anhydrides ou esters
• C04B 24/28 - Composés macromoléculaires obtenus autrement que par des réactions faisant intervenir uniquement des liaisons non saturées carbone-carbone
• C09K 8/504 - Compositions à base d'eau ou de solvants polaires
• C04B 103/00 - Fonctions ou propriétés de l'ingrédient actif

Abrégé

Disclosed are time controlled, hydrolytically degradable compositions that include a polyurethane; precipitated silica, carbon black, or a combination thereof; an organic acid adapted to facilitate degradation when the composition is contacted with water; a stabilizer; a first crosslinking agent; and an optional co-agent. The composition is adapted to degrade over a predetermined time period upon contact with water at a pH ranging from 5 to 8 and at a temperature ranging from 100°F to 250°F.

Classes IPC  ?

• C08L 75/04 - Polyuréthanes
• C08K 3/012 - Agents activant la dégradation du composé macromoléculaire
• C08K 5/09 - Acides carboxyliques; Leurs sels métalliques; Leurs anhydrides
• C08K 5/14 - Peroxydes
• C08K 5/29 - Composés contenant des liaisons doubles carbone-azote
• C08K 5/3492 - Triazines
• C09K 8/524 - Compositions pour éviter, limiter ou éliminer les dépôts, p.ex. pour le nettoyage les dépôts organiques, p.ex. paraffines ou asphaltènes
• C09K 8/62 - Compositions pour la formation de crevasses ou de fractures
• E21B 33/13 - Procédés ou dispositifs de cimentation, de bouchage des trous, des fissures ou analogues

Abrégé

Compositions and methods are provided that are beneficial for use in downhole applications, especially oil and gas well bores. A composition includes an elastomer doped with a dopant. The presence of the dopant increases a rate of microbial degradation of the elastomer by a microbe. A method includes forming an article including a doped polymer. The doped polymer includes an elastomer doped with a dopant. The method also includes placing the article in a service environment. The presence of the dopant in the doped polymer increases a rate of microbial degradation of the elastomer by a microbe in the service environment.

Classes IPC  ?

• C09K 8/035 - Additifs organiques

Abrégé

Compositions and methods are beneficial for use in downhole applications, especially oil and gas well bores. A composition includes an elastomer doped with a dopant. The presence of the dopant increases a rate of microbial degradation of the elastomer by a microbe. A method includes forming an article including a doped polymer. The doped polymer includes an elastomer doped with a dopant. The method also includes placing the article in a service environment. The presence of the dopant in the doped polymer increases a rate of microbial degradation of the elastomer by a microbe in the service environment.

Classes IPC  ?

• E21B 33/12 - Packers; Bouchons
• E21B 33/134 - Bouchons d'étrésillon
• E21B 43/22 - Emploi de produits chimiques ou à activité bactérienne
• C08L 67/00 - Compositions contenant des polyesters obtenus par des réactions créant une liaison ester carboxylique dans la chaîne principale; Compositions contenant des dérivés de tels polymères

Abrégé

Compositions and methods are provided that are beneficial for use in downhole applications, especially oil and gas well bores. A composition includes an elastomer doped with a dopant. The presence of the dopant increases a rate of microbial degradation of the elastomer by a microbe. A method includes forming an article including a doped polymer. The doped polymer includes an elastomer doped with a dopant. The method also includes placing the article in a service environment. The presence of the dopant in the doped polymer increases a rate of microbial degradation of the elastomer by a microbe in the service environment.

Classes IPC  ?

• C09K 8/035 - Additifs organiques