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Oilfield Kelly Drilling Rotary Hose

Rotary and Kelly Hoses come with Api 7k certification and can be made with hammer union, api flanges, n.p.t threads, unibolt or api hub connections welded on.

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Oilfield Kelly Drilling Rotary Hoses – API 7K Approved

Kelly hose is a specialized type of high-pressure hose used in the oil and gas industry during drilling operations.

Inner: made of synthetic rubber or highly abrasion-resistant materials.
Reinforcement Layers: multiple layers of high-strength steel wire or textile reinforcement.
Cover: made of synthetic rubber or a blend of synthetic materials, it is designed to be resistant to oil, abrasion, and harsh environmental conditions. Inquire the Direct Factory Price Now!

Pressure rating: Kelly hoses are built to withstand high-pressure drilling operations. They have pressure ratings that can range from 5,000 to 10,000 pounds per square inch (psi) or even higher, depending on the specific requirements of the drilling operation.


Api 7k Certification

API 7K approval is important in the oil and gas industry because it provides assurance to operators and drilling contractors that the equipment they are using has been tested and meets the industry’s safety and quality standards.


Cooperation Cases

Frequently Asked Questions

What Is a Kelly Hose?

Kelly Hose is a type of high-pressure hose that is used to connect the top of the drilling rig to the drill string.

Kelly Hose (also known as a mud hose or rotary hose) is a flexible, steel reinforced, high pressure hose that connects the standpipe to the kelly (or more specifically to the goose-neck on the swivel above the kelly) and allows free vertical movement of the kelly while facilitating the flow of drilling fluid through the system and down the drill string. The Kelly hose has a diameter of 3-5 inches (inside diameter).

What Are Kelly Hoses Made Of?

Kelly hoses are typically made of rubber or steel-reinforced rubber. They are designed to withstand high pressure and abrasion, and are available in a range of sizes to accommodate different drilling depths and rig configurations.

How Long Are Kelly Hoses?

The length of a Kelly hose can vary depending on the drilling depth and the distance between the mud pump and the swivel. Kelly hoses are typically available in lengths of 40 to 90 feet.

How Are Kelly Hoses Connected to the Drill String?

Kelly hoses are typically connected to the drill string using a threaded connection. The hose is attached to the top of the kelly, which is then screwed into the drill string.

How Are Kelly Hoses Maintained?

Kelly hoses should be inspected regularly for signs of wear or damage, and replaced if necessary. They should also be stored and handled properly to prevent kinks, twists, or other damage that could affect their performance. Regular cleaning and maintenance can help extend the life of a Kelly hose.

Are Kelly Hoses Regulated by Any Industry Standards?

Yes, Kelly hoses are regulated by industry standards such as API 7K. This specification outlines the requirements for drilling and well-servicing equipment, including Kelly hoses, to ensure they meet high standards of quality and safety.

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