Drilling Accessories

Pup Joints:

Pup joints are short, interchangeable pipe sections used to adjust the length of the drill string. API 5CT and API 7-1 provide specifications for the manufacturing and inspection of pup joints, including material requirements, dimensions, and threading.

Subs:

Subs are accessories that connect different sections of the drill string, providing compatibility between components with different thread connections or sizes. API 7-1 outlines standards for the design, manufacturing, and inspection of subs, ensuring proper dimensions, material properties, and thread connections.

Lifting Subs:

Lifting subs are designed to facilitate the handling and lifting of heavy drill string components. API standards provide guidelines for the design, dimensions, and lifting capacities of these subs.

Cross-Over Subs:

Cross-over subs are used to connect drill string components with different thread connections. API 7-1 specifies the dimensions, thread types, and material requirements for cross-over subs.

Bit Subs:

Bit subs, also known as saver subs or bit adapters, connect the drill bit to the drill string. API standards define the design, dimensions, and material requirements for bit subs to ensure proper fit and performance.

Reamers:

Reamers are used to enlarge the wellbore during drilling. API standards provide guidelines for the design and manufacturing of reamers, ensuring proper dimensions, materials, and functionality.

Fishing Tools:

Fishing tools are used to retrieve objects lost downhole. API standards, such as API RP 7G, provide guidelines for the design and use of fishing tools in drilling operations.