Drilling tools

Keyway Reamer

The keyway reamer is a tool designed to enlarge wellbore dimensions. It is connected to the upper section of the drill string, and its sliding sleeve is surfaced with multiple hard-alloy cutting edges, enabling effective enlargement of the keyway opening.

Overall helical stabilizer  

The integral helical stabilizer is a monolithic tool machined from high-quality alloy structural steel. It features carbide inserts embedded in the helical flight, offering high hardness, excellent toughness, superior wear resistance, and an extended service life.

Drill string bypass valve

When a well kicks during drilling and the drill bit’s water nozzles become blocked, preventing well control operations, the bypass valve can be opened to resume circulation or perform well control. Prior to drilling into oil and gas formations, the bypass valve must be connected to the drill bit or positioned in close proximity to it.

Roller stabilizer

Roller stabilizers are used in a variety of reaming operations, particularly to provide stability during the drilling and grinding of the bottomhole assembly. They are versatile tools suitable for wellbores ranging from 7½ inches to 26 inches in diameter. Moreover, with the same housing, by appropriately configuring the rollers and adjusting the pressure blocks, they can be adapted to accommodate different wellbore sizes.

Kelly cock valve

The square‑drill‑pipe plug valve can be classified into an upper square‑drill‑pipe plug valve and a lower square‑drill‑pipe plug valve; drilling fluid can flow freely through the valve without any pressure drop. It may serve as a drill‑pipe safety valve, be installed above the square drill pipe to control blowout prevention, or be positioned below the square drill pipe to prevent loss of drilling fluid when the drill pipe is removed.

Flat-roller-type casing conditioner

The eccentric roller-type casing conditioner can reshape and repair lightly deformed casings in oil, gas, and water wells, restoring the inner diameter to up to 98% of its original size.

Casing scraper

The eccentric roller-type casing conditioner can reshape and repair lightly deformed casings in oil, gas, and water wells, restoring the inner diameter to up to 98% of its original size.

Pear-shaped expander

The working portion of the pear‑shaped expander is the large end of the conical body. When pressure is applied to the drill string, the lateral force generated at the instant the large end of the cone contacts the deformed section of the casing causes that section to expand and deform.