Well logging tools require BÖHLER steels and alloys with high strength, corrosion resistance, and stability. Key quality features include ultra-clean materials, full traceability, controlled heat treatment, and rigorous testing for reliable downhole performance.
Well logging tools in the oil and gas industry are precision instruments used to evaluate formation properties under extreme downhole conditions, including high pressures, elevated temperatures, and exposure to corrosive fluids such as brines, CO₂, and H₂S. These tools must deliver accurate measurements while withstanding mechanical stress, vibration, and thermal cycling during operation. Material requirements are therefore highly demanding, focusing on high strength, excellent corrosion resistance, dimensional stability, and resistance to stress corrosion cracking and hydrogen-induced damage. In addition, materials must ensure long-term reliability and consistent sensor performance in harsh subsurface environments.
BÖHLER high-performance steels and alloys are specifically engineered to meet these stringent requirements. Advanced stainless steels, precipitation-hardened grades, and high-alloy materials provide an optimized combination of mechanical strength, corrosion resistance, and structural stability. Produced using advanced melting and refining technologies, BÖHLER materials offer exceptional cleanliness, low inclusion content, and homogeneous microstructures, ensuring reliable performance and extended service life. Key quality features include precise chemical composition control, certified traceability, and validated heat treatment processes tailored to application needs. Comprehensive testing, including corrosion resistance, mechanical verification, and non-destructive inspection, ensures compliance with oil and gas standards. BÖHLER materials enable accurate, durable, and reliable solutions for advanced well logging technologies.
BÖHLER A903 (UNS S32205) is the most common stainless ferritic-austenitic Cr-Ni-Mo steel with nitrogen addition. In addition to good strength properties, this steel offers high corrosion resistance, especially against stress corrosion cracking in chloride-containing solutions, and is resistant to intergranular corrosion up to 300°C. The alloy should not be used at temperatures above 300°C due to embrittlement. Heat treatment after welding is not necessary. Required surface finish: pickled, scale-free heat treated or machined. Commonly used in the oil and gas industry, hydroelectric power, pressure vessels, pulp and paper industry, components and chemical tanks, such as parts for separators and heat exchangers and parts in the paper industry, oil and gas extraction , compressors, seawater desalination.
Read MoreBÖHLER A911SA is a ferritic-austenitic stainless steel of Type 25%Cr with PREN of min. 40. It offers excellent corrosion resistance against general corrosion, stress corrosion cracking, corrosion fatigue, pitting, crevice and erosion corrosion and possessing very high mechanical strength properties. However, it contains less copper compared to other super Duplex SS but a deliberate addition of tungsten instead, claimed to selectively improve corrosion resistance. Good weldability, post weld heat treatment not necessary. Max. temperature for long periods of service: 280°C (535°F ) / (300°C/570°F possible for short periods). Surface condition for optimum corrosion resistance: pickled or machined. Components in offshore, waste water, sea water desalination and chemical plants with aggressive chloride-containing media e.g. heat exchangers, separator parts, compressor and pump components, turbine blades.
Read MoreBÖHLERL718 API (UNS N07718) is a high-strength, corrosion-resistant nickel-chromium-iron-molybdenum material with excellent corrosion resistance, especially in H2S and CO2 environments. The alloy is age-hardenable due to the addition of niobium, titanium and aluminium. BÖHLER L718 API is recognised by the oil industry for its simple and cost-effective production in combination with good tensile, fatigue, creep and fracture strength and is used in a wide range of applications in this sector. BÖHLER L718 API has excellent weldability and is resistant to cracking after welding. The material can be used at high temperatures. BÖHLER L718 API is available in the NACE/API 6A CRA versions with a minimum yield strength of 120/140 ksi and also in the high-strength version with 150 ksi. All hardness grades are suitable for sour service and can be used for pressurising and pressure-controlling equipment in corrosive environments. Typical applications include packers, pumps, connectors and fasteners as well as gate valves, throttle spindles, pipework hangers and fire safe valves, but also a wide range of downhole and completion components, nuclear and surface applications.
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