Equipment/Software/Literature

June 18, 2007

New corrosion inhibitor helps well production

New Clean N Cor cleaning and corrosion inhibitor treatment program is designed to protect and maximize production from oil fields with oil sludge deposition challenges.

The program incorporates hands-on technical expertise with advanced chemistry and in-field monitoring to provide a comprehensive treatment solution that removes sludge deposits from inner pipe walls and filter equipment and then prevents aggressive corrosion from taking place.

In one user’s water injection system, the firm notes, this level of sludge removal translated to 75% more water being injected, resulting in increased oil production and an 800% return on investment. Once the sludge had been removed, Clean N Cor prevented it from readsorbing and then protected the pipe surface by providing a film that acted as a barrier to corrosive fluids. The required dosage to maintain an acceptably low corrosion rate was nearly 20% lower than the dosage required for conventional corrosion inhibitors, the firm says.

Source: Nalco Co., Energy Services Div., 7705 Highway 90-A, Sugar Land, TX 77478.

Mobile rotary rig handles deep-hole drilling

Here’s the RD20 truck-mounted rotary, deep-hole drilling rig designed specifically for oil, gas, and coalbed methane wells.

Mounted on a 380 hp, five-axle, 10 ft by 6 ft tridem carrier with manually controlled lockers on all three rear axles, it is designed to reach most locations under its own power. The separate truck engine and drive train are designed to move the rig down the road at standard highway speeds and provide power for off-road maneuverability.

From the time the RD20 arrives on location, it typically can be rigged up and drilling in 1 to 3 hr, the firm says. It has a 755 hp engine and available air-on-board. Converting the rig for mud service is designed to take less than 15 min. With the firm’s disconnect box, the compressor can be turned off from the power train, saving fuel and wear.

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The patented two-cylinder carriage feed system and hydraulic top-head drive are designed to deliver 120,000 lbf ft (533.7 kN) of pullback and 30,000 lbf ft (133.5 kN) pulldown force. The drill pipe and casing are handled with the rotary head, eliminating the need for a large drawworks and spinner. The torque limit control is designed to allow precise torque settings that match pipe and casing requirements. When a joint is torqued to specification, the rotary head automatically stops.

Source: Atlas Copco Drilling Solutions LLC, Box 462288, Garland, TX 75046-2288.