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maraca    
n. 响葫芦

响葫芦

maraca
n 1: a percussion instrument consisting of a hollow gourd
containing pebbles or beans; often played in pairs


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  • Fitness for Service of 13CrS and Q-125 OCTG Material for Sour Service
    Abstract During well clean-up of four subsea wells in a new gas field, elevated concentrations of H2S were unexpectedly measured The concentrations left the tubing (13CrS) and casing material (Q-125) outside of the pre-qualified areas of ISO 15156 Therefore, it was required to demonstrate the fitness of the materials against relevant environmental cracking corrosion This publication
  • NACE MR0175 ISO 15156 Piping Materials for Sour Service H2S . . .
    Complete guide to piping material selection for sour service H2S applications per NACE MR0175 ISO 15156 Covers carbon steel requirements, hardness limits, welding considerations, and sulfide stress cracking prevention
  • Sour Service - Solutions
    Vallourec Sour Service grades meet the most challenging requirements of oil and gas operations in H2S-containing environments
  • Material Selection Guide for Sour Service | Article Index | Blog . . .
    Learn More About NACE Understanding the Science Behind Your Material Understanding the application pressure, temperature, chloride concentration, pH, and H2S partial pressure can help when selecting materials for your sour service application
  • Material selection Chart - Nippon Steel
    A Material selection chart provides a general concept to choose from the material applications based on CO2 content, H2S content and temperature Therefore it should be used as a general guideline only
  • Study and Application for Corrosion-Resistant Material Selection of . . .
    For natural gas well with high content of CO2 and H2S, very serious corrosion in the gas well string is an important factor of gas production system life In order to ensure the long-term development of gas wells, this paper mainly study the corrosion-resistant material selection of tubing and casing in sour gas reservoirs under coexistence of H2S and CO2 and proposes the optimization idea and
  • A simplified workflow for completion tubing metallurgy selection
    A simplified workflow for completion tubing metallurgy selection We’re all familiar with the sort of H 2 S and CO 2 partial pressure material selection graph shown in Figure 1 Here, the appropriate metallurgy for a well based on the partial pressure of the CO 2 and H 2 S as well as operational temperature is divided into zones
  • Internal corrosion in oil and gas wells during casings and tubing . . .
    Abstract Background Casing and tubing for oil and gas wells are frequently made of steel alloys Many corrosive gases, organic acids, salts, and other contaminants are present in the fluids of oil and gas wells, which hurt their productivity, efficiency, and continuous production
  • SPE SEG | Conceptual Casing Design for a HPHT Carbonate Development . . .
    This paper intends to outline the challenges and optimization of casing design philosophy which is drawn upon various perspectives such as long term well integrity, drilling operations, working stress design, effect of compaction and subsidence, probability of failure analysis, multi-well thermal analysis, downhole material corrosion
  • Titanium Alloy Tubing for HPHT Applications | SPE Annual . . . - OnePetro
    Abstract Current and future flow streams from HTHP wells usually have to contend with H2S, CO2, and chlorides at high temperatures At wells with temperatures of over 350°F this hostile environment requires selecting Nickel-based alloys for tubing casing that are corrosion resistant alloys (CRA) Unfortunately, these Nickel-based or high chrome corrosion resistant alloys (CRA's) can be
  • Society of Petroleum Engineers (SPE) | Oil Gas Membership Association
    The Society of Petroleum Engineers (SPE) connects professionals from all corners of the oil and gas sector, fostering collaboration, innovation, and growth Whether you’re advancing cutting-edge solutions, building your career, or seeking to make a lasting impact, SPE provides the platform and tools to help you thrive





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