Abstract

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.

IPC Classes  ?

• C09K 8/512 - Compositions based on water or polar solvents containing organic compounds macromolecular compounds containing cross-linking agents
• C04B 26/16 - Polyurethanes
• C04B 24/04 - Carboxylic acids; Salts, anhydrides or esters thereof
• C04B 24/28 - Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
• C09K 8/504 - Compositions based on water or polar solvents
• C04B 103/00 - Function or property of the active ingredients

Abstract

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.

IPC Classes  ?

• C08L 75/04 - Polyurethanes
• C08K 3/012 - Additives activating the degradation of the macromolecular compounds
• C08K 5/09 - Carboxylic acids; Metal salts thereof; Anhydrides thereof
• C08K 5/14 - Peroxides
• C08K 5/29 - Compounds containing carbon-to-nitrogen double bonds
• C08K 5/3492 - Triazines
• C09K 8/524 - Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning organic depositions, e.g. paraffins or asphaltenes
• C09K 8/62 - Compositions for forming crevices or fractures
• E21B 33/13 - Methods or devices for cementing, for plugging holes, crevices, or the like

Abstract

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.

IPC Classes  ?

• C09K 8/035 - Organic additives

Abstract

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.

IPC Classes  ?

• E21B 33/12 - Packers; Plugs
• E21B 33/134 - Bridging plugs
• E21B 43/22 - Use of chemicals or bacterial activity
• C08L 67/00 - Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers

Abstract

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.

IPC Classes  ?

• C09K 8/035 - Organic additives