초록 ▼

Coatings for well screens that protect the screens from damage as they are inserted into the wellbore and once in the well, release reactive materials to react with and degrade potentially plugging materials such as drill solids, fluid filtercakes, fluid loss additives, and drilling fluids. The coat

Coatings for well screens that protect the screens from damage as they are inserted into the wellbore and once in the well, release reactive materials to react with and degrade potentially plugging materials such as drill solids, fluid filtercakes, fluid loss additives, and drilling fluids. The coatings can be specifically designed for individual well conditions and are comprised of a binder that either melts or dissolves within the wellbore and one or more reactive materials such as acids, enzymes, surfactants, chelants, oxidizers or free radical generators and the like which are released into the screen and the near wellbore area and which are effective in degrading or dissolving materials which could potentially plug the screen.

대표청구항 ▼

1. A method for minimizing the damage to the flow capacity of screens or slotted liners comprising: a. placing a reactive coating onto a screen or slotted liner prior to placing the screen or slotted liner into the production interval of an oil or gas wells and b. allowing the reactive coating to b

1. A method for minimizing the damage to the flow capacity of screens or slotted liners comprising: a. placing a reactive coating onto a screen or slotted liner prior to placing the screen or slotted liner into the production interval of an oil or gas wells and b. allowing the reactive coating to be released into the wellbore where it will degrade, disperse and dissolve filtercakes or fluids that are in the wellbore so that they do not plug the open areas of the screen or slotted liner.