API Steel Casing and Tubing

API steel is used in offshore drilling projects, for drill pipe, drill casing, and production tubing. It may be used in pipe for cement pumping, oil lines, or drill fluid pumping. After production is established, API line pipe is used for transportation of the petroleum product as well as distribution. Corpac Steel Products has extensive experience in supplying products meeting American Petroleum Institute specifications to projects of all sizes in all locations.

API Casing

Casing maintains borehole stability, prevents contamination of water sands, controls well pressures during drilling and production, and is where blowout preventers, wellhead equipment, and production tubing is installed. Casing is a major part of the overall cost of a well. Therefore selection of size and grade of casing, as well as connectors must be made with engineering and economic factors in mind.

API Tubing

Oil and gas are transported from their producing formations to the field surface using tubing, which must be strong enough to resist the loads and deformations that can occur in the production process. API tubing must be sized according to the expected rate of oil or gas production. API standards for tubing and casing have to do with how these products are manufactured, steel grades used, types of joints, wall thickness, and length ranges.

API Connection Ratings and Failure

The API recognizes three basic types of joint connections: rounded thread coupling, asymmetrical trapezoidal thread coupling, and trapezoidal thread casing without coupling. Casing failures usually occur at connections and may be caused by improper design or use, failure to meet manufacturing tolerances, or damage during handling or storage. Your supplier should understand casing failure and why you need the casing or tubing you order.

Your Casing and Tubing Supplier

Corpac Steel Products supplies casing and tubing to projects worldwide and knows how to get products to customers even in remote areas and even when products must cross one or more international borders. Customizing a delivery system to the client can go a long way toward helping projects stay on schedule and within budget. Make sure that your API casing and tubing supplier knows the products thoroughly, and understands the importance of on-time delivery.