First, because a large volume of produced water must be handled during coalbed methane production, water chemistry is a primary consideration when developing a water management strategy (Ortiz et al., 1993 Pashin and Hinkle, 1997 Van Voast, 2003 Riese et al., 2005).
Water chemistry is a vital variable for understanding coal as a reservoir rock from a number of standpoints. Pashin, in Applied Coal Petrology, 2008 9.3.6 Formation Water Chemistry and Basin Hydrology The chapter ends with a brief introduction to molecular dynamics simulations of the structure of SCW at surfaces, which serves as an introduction to Chapters 5 and 6 Chapter 5 Chapter 6. Preliminary water chemistry specifications are then presented. The discussion then turns to feedwater chemistry, the release and transport of radioactive material out of the core, and water radiolysis. This chapter starts by examining the question “What is supercritical water?”. The deposition of corrosion products on surfaces can affect heat transfer to the coolant leading to higher metal temperatures, which can also affect bulk degradation mechanisms such as creep. In particular, for any supercritical water-cooled reactor concept the properties of supercritical water directly affect general and localized corrosion (such as environmentally assisted cracking) of system materials and the transport of corrosion products to and from the core. In any power cycle using high-temperature water as the heat transfer medium, water chemistry has a major influence on materials degradation, and it is necessary to understand those water properties that influence material degradation processes. Wenyue Zheng, in Materials and Water Chemistry for Supercritical Water-cooled Reactors, 2018 Abstract The proper and proactive sampling, chemical characterization, and water chemistry data interpretation have become more critical for the reliable prediction, identification, and management of water chemistry-related issues and to improve return on investment for stakeholders.ĭavid Guzonas. In shale and tight assets, large quantity of aqueous-based fluid is used in hydraulic fracturing for production enhancement. In deep water fields, formation waters often have high TDS and escalated scaling and corrosive tendency. With the advancements in drilling and production technologies, an increasing number of new developments are from reservoirs with deeper depth, higher temperature and pressure, and/or lower permeability. Moreover, produced water chemistry surveillance provides a low-cost and promising approach in investigating well interference and reservoir drainage dynamics to optimize decision-making in asset development and strategical planning in shale plays.
Produced water surveillance can be used for produced water source identification and allocation such as monitoring seawater breakthrough in waterflood operations and identifying water sources from nontargeted formation via lineaments or natural fractures. Knowledge on produced water chemistry and subsurface water heterogeneity is a cornerstone for the prediction and control of water-related production risks including scale, corrosion, formation damage, and fouling at locations from the near wellbore formation to topside. Understanding formation water chemistry (salinity) in the oil leg is important in OOIP determination. Wei Wang, Wei Wei, in Fluid Chemistry, Drilling and Completion, 2022 3.8 Final remarksĪppropriate understanding and applying water chemistry are important in the oil and gas industry from project appraisal to asset retirement.
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