... ABSTRACT Sweet corrosion of Oil Country Tubular Goods (OCTG) is a major concern in the oil and gas industry. The severity of corrosion depends on temperature, CO 2 partial pressure, and material characteristics. In this paper, the effects of temperature and chromium content in OCTG steel...

... Abstract Oil country tubular goods (OCTG) are routinely evaluated for sulfide stress cracking (SSC) resistance. Historically, most qualifications relied on full sour, i.e. 1 bar H 2 S, to assure sour grades of OCTG for service in the field. Over the past two decades, it has become more routine...

... Corrosion Inhibition H2S management selection MPa Upstream Oil & Gas resistance alloy corrosion resistance oil country tubular goods field environment alloy 28 oilfield chemistry Corrosion Management OCTG corrosion resistant alloy alloy 028 stress corrosion Production...

... Abstract There exists a commonly-held belief that as-delivered oil country tubular goods (OCTG) possess superior resistance to sulfide stress cracking (SSC) than standardized testing for SSC may identify. This belief relies on the nature of the mill scale present on OCTG being a barrier...

... ABSTRACT Exposure temperature has a known effect on sulfide stress cracking (SSC) in low alloy steels where elevated temperatures permit the use of oil country tubular goods (OCTG) in sour conditions that would not be survivable at lower temperatures. In order to assess SSC susceptibility...

... flexibility plus allows welding and forging to be used as fabrication techniques. API XT is not applicable to most completion equipment because the mill practices are different for solid bar and heavy wall hollows from oil country tubular goods (OCTG). Heat treatable raw...

... ABSTRACT: Oil and gas operations are progressing deeper and into higher pressure formations that require higher strength materials, particularly for oil country tubular goods (OCTG). Concomitant factors in these wells are higher H2S and CO2 partial pressures that also bring the need for more...

... ABSTRACT A coupled hydrogen diffusion and material elastic-plastic deformation finite element analysis (FEA) subroutine was developed. The subroutine was used to analyze the hydrogen diffusion process in an oil country tubular goods (OCTG) pipe with a surface flaw under internal pressure...

... Sulphide stress SSC resistance houston tx roar reduction supermartensitic stainless steel ABSTRACT Supermartensitic stainless steels, recently made available as oil country tubular goods (OCTG), have been developed as a valuable cost effective alternative to duplex stainless steel for high C0 2...

... INTRODUCTION ABSTRACT Crack propagation in the presence of sour gas is the conjunction of electrochemical reactions and metallurgical processes that increase hydrogen absorption at the crack tip and therefore produces embrittlement. To evaluate Oil Country Tubular Goods (OCTG) susceptibility...

... sour environment international petroleum technology conference alloy 28 Abstract Alloy 29 for use in oil country tubular goods (OCTG) has been evaluated in sour environments. Stress corrosion cracking (SCC) tests were conducted in various environments containing H2S, CO2, chloride ions...

..., Via di Castel Romano 100, 00128 Rome, Italy 2) StatoilHydro, Forusbeen 50, N4035 Stavanger, Norway ABSTRACT In recent times, the increase in pressure, depth and diameter of wells has required Oil Country Tubular Goods (OCTG) with higher yield strength. Because Sulphide Stress Cracking (SSC) can occur...

... - France ABSTRACT The NACE TM0177 Method A Uniaxial Tensile test using a proof-ring device is extensively employed in order to assess the Sulfide Stress Cracking (SSC) susceptibility which can occur on Oil Country Tubular Goods (OCTG) and Line Pipes (LP). It is also well understood that different test...

... ABSTRACT Limited corrosion data exists on the effect of grain size on the stress corrosion cracking (SCC) resistance of Oil Country Tubular Goods (OCTG) to sour gas environments. Among the primary Corrosion Resistant Alloys (CRA?s) currently used in the cold worked condition for OCTG in sour...

..., TX 77380 USA ABSTRACT It is well known that residual stresses in a structure can have a detrimental effect on its flaw cracking process. Through a three-dimensional (3D) finite element analysis (FEA) on a six-roll cold straightening process, it was found that seamless oil country tubular goods (OCTG...

... ABSTRACT Traditionally, in the selection of Oil Country Tubular Goods (OCTG) for sour gas service, Corrosion Resistant Alloys (CRA?s) are screened first by their pitting resistance equivalent number (PREN) and then by environmental cracking data generated in sour brine environments...

... ratio of up to 15%, expandable open hole liners which require expansion up to 22%, and expandable sand-screens that require expansion between 20% and ~40%. Cold Worked CRA?s have been successfully used for Oil Country Tubular Goods (OCTG) in corrosive wells for many years. However, the cold working...