Composite Packer for Salt Water Disposal Wells
Publication Date: 2018-Apr-30
The IP.com Prior Art Database
Disposal of salt water or frac water is an industry-wide challenge. Because frac water often is fully oxygenated, contains spent acids and salts, and has an uncontrolled chemistry, it can be extremely corrosive to most common downhole metallurgies. Tubing strings for waste disposal are often coated with plastics or epoxies. However, the packer must be metallic, and if the tubing string is coated - the packer is the first piece of metal the corrosive disposal water sees. Hot, fully oxygenated salt water is corrosive to most alloys, even expensive nickel alloys. Composite bridge plugs already exist, and typically disposal wells are low pressure and relatively low temperature (~ 200F max), so extremely high strength composite materials may not be required. A composite packer could handle a business niche and capture market share.