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Kelly Valve

Kelly valve is a manually operated ball type valve for the drill stem, divided into upper and lower sections. The upper Kelly valve is connected between lower end of swivel and upper end of Kelly. The lower Kelly valve is connected between upper end of drill pipe and lower end of Kelly or lower end of Kelly saver subs. The Kelly valve can be opened or closed off by simply turning a special operating wrench 90° according to indicated direction.

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Detailed Description

Product Overview

The Kelly Valve is a manually operated ball valve that plays a critical role in oil and gas drilling operations. Its unique design allows for secure installation at key positions in drilling equipment, ensuring efficient fluid control during drilling. The Upper Kelly Valve is installed between the lower end of the Swivel and the upper end of the Kelly, while the Lower Kelly Valve connects the upper end of the Drill Pipe to the lower end of the Kelly (or the lower end of the Kelly Saver Sub). Using a dedicated operating wrench, personnel can rotate the valve 90° in the indicated direction to open or close it, effectively controlling the flow of drilling fluid and other media .

Applications

Kelly Valves are widely used in onshore and offshore oil and gas drilling operations. During drilling, when connecting, disconnecting, or replacing drill strings, the valve rapidly isolates or restores drilling fluid circulation, ensuring operational continuity and safety. It performs reliably in conventional vertical wells, directional wells, horizontal wells, and other complex drilling processes, safeguarding drilling progress .

Product Features

1. Exceptional Sealing Performance. Utilizes a ball valve design and high-quality sealing materials to ensure reliability under extreme conditions (high pressure/temperature), preventing drilling fluid leaks and ensuring operational safety .

2. Simple and Quick Operation. A dedicated operating wrench enables 90° rotation for instant opening/closing, reducing labor time and enhancing efficiency. Critical for emergency response (e.g., well kicks) .

3. Robust and Durable Structure. Forged from high-strength alloy materials (e.g., 4145H) to withstand drilling pressure and impact, ensuring long-term stability and minimizing maintenance costs .

4. Precision Positioning Design. The optimized layout of upper/lower sections ensures accurate installation and compatibility with diverse drilling equipment, preventing seal failures due to misalignment .

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