Liquid loading can reduce production and shorten the lifecycle of a well costing a company millions in revenue. A handy guide on the latest techniques, equipment, and chemicals used in de-watering gas wells, Gas Well Deliquification, 2nd Edition continues to be the engineer's choice for recognizing and minimizing the effects of liquid loading. The 2nd Edition serves as a guide discussing the most frequently used methods and tools used to diagnose liquid loading problems and reduce the detrimental effects of liquid loading on gas production. With new extensive chapters on Coal Bed Methane and Production this is the essential reference for operating engineers, reservoir engineers, consulting engineers and service companies who supply gas well equipment. It provides managers with a comprehensive look into the methods of successful Production Automation as well as tools for the profitable use, production and supervision of coal bed gases. - Turnkey solutions for the problems of liquid loading interference - Based on decades of practical, easy to use methods of de-watering gas wells - Expands on the 1st edition's useful reference with new methods for utilizing Production Automation and managing Coal Bed Methane

This text discusses a wide variety of production chemicals used by the oil and gas industry for down-hole and topside applications both onshore and offshore. It reviews all past and present classes of production chemicals, providing numerous difficult-to-obtain references. Unlike other texts that focus on how products perform in the field, this book focuses on the specific structures of chemicals that are known to deliver the required or desired performance. Where known, it also details the environmental aspects of the chemicals discussed and their success in the field.

This book is a compilation of selected papers from the 10th International Field Exploration and Development Conference (IFEDC 2020). The proceedings focuses on Reservoir Surveillance and Management, Reservoir Evaluation and Dynamic Description, Reservoir Production Stimulation and EOR, Ultra-Tight Reservoir, Unconventional Oil and Gas Resources Technology, Oil and Gas Well Production Testing, Geomechanics. The conference not only provides a platform to exchanges experience, but also promotes the development of scientific research in oil & gas exploration and production. The main audience for the work includes reservoir engineer, geological engineer, enterprise managers senior engineers as well as professional students.

Petroleum engineers search through endless sources to understand oil and gas chemicals, find problems, and discover solutions while operations are becoming more unconventional and driving towards more sustainable practices. The Oil and Gas Chemistry Management Series brings an all-inclusive suite of tools to cover all the sectors of oil and gas chemicals from drilling to production, processing, storage, and transportation. The second reference in the series, Flow Assurance, delivers the critical chemical oilfield basics while also covering latest research developments and practical solutions. Organized by the type of problems and mitigation methods, this reference allows the engineer to fully understand how to effectively control chemistry issues, make sound decisions, and mitigate challenges ahead. Basics include root cause, model prediction and laboratory simulation of the major chemistry related challenges during oil and gas productions, while more advanced discussions cover the chemical and non-chemical mitigation strategies for more efficient, safe and sustainable operations. Supported by a list of contributing experts from both academia and industry, Flow Assurance brings a necessary reference to bridge petroleum chemistry operations from theory into safer and cost-effective practical applications. Offers full range of oilfield production chemistry issues, including chapters focused on hydrate and organic deposition control, liquid blockage mitigation, and abiotic and microbially influenced corrosion prevention Gain effective control on problems and mitigation strategies from industry list of experts and contributors Delivers both up to date research developments and practical applications, bridging between theory and practice

Topical Issues of Rational Use of Natural Resources 2019 Vol. 2 contains the contributions presented at the XV International Forum-Contest of Students and Young Researchers under the auspices of UNESCO (St. Petersburg Mining University, Russia, 13-17 May 2019). The Forum-Contest is a great opportunity for young researchers to present their work to the academics involved or interested the area of extraction and processing of natural resources. The topics of the book include: • Geotechnologies of resource extraction: current challenges and prospects • Cutting edge technologies of geological mapping, search and prospecting of mineral deposits • Digital and energy saving technologies in mineral resource complex • Breakthrough technologies of integrated processing of mineral hydrocarbon and technogenic raw materials with further production of new generation materials • The latest management and financing solutions for the development of mineral resources sector • Environment protection and sustainable nature management • New approaches to resolving hydrocarbon sector-specific issues Topical Issues of Rational Use of Natural Resources 2019 Vol. 2 collects the best reports presented at the Forum-Contest, and is of interest to academics and professionals involved in the extraction and processing of natural resources.

This book presents the proceedings of the 3rd International Conference on Integrated Petroleum Engineering and Geosciences 2014 (ICIPEG2014). Topics covered on the petroleum engineering side include reservoir modeling and simulation, enhanced oil recovery, unconventional oil and gas reservoirs, production and operation. Similarly geoscience presentations cover diverse areas in geology, geophysics palaeontology and geochemistry. The selected papers focus on current interests in petroleum engineering and geoscience. This book will be a bridge between engineers, geoscientists, academicians and industry.

Gas well deliqufication, also referred to as "gas well dewatering", is the general term for technologies used to remove water or condensates buildup from producing gas wells. When natural gas flows to the surface in a producing gas well, the gas carries liquids to the surface if the velocity of the gas is high enough. A high gas velocity results in a mist flow pattern in which liquids are finely dispersed in the gas. Consequently, a low volume of liquid is present in the tubing or production conduit, resulting in a pressure drop caused by gravity acting on the flowing fluids. As the gas velocity in the production tubing drops with time, the velocity of the liquids carried by the gas declines even faster. Flow patterns of liquids on the walls of the conduit cause liquid to accumulate in the bottom of the well, which can either slow or stop gas production altogether.

Liquid loading is an inevitable phenomenon for most gas wells. Liquid loading occurs when fluids accumulate in the wellbore instead of producing to the surface. This causes additional hydrostatic pressure that lowers formation drawdown and reduces production. The process of de-watering gas wells is commonly known as gas well deliquification. This involves quantifying if liquid production is the source of un-optimization in the well and selecting an appropriate artificial lift system to offload the well. This study presents a gas well deliquification workflow, that quantifies the extent of liquid loading through production analysis, critical unloading rate, and nodal analysis. Once liquid loading is confirmed, a design & review workflow is suggested that compares different artificial lifts to select the most effective choice. Production analysis includes; (a) evaluating decline trend of rate and estimated bottom hole pressure, (b) Nodal analysis, to create a calibrated baseline model that is used as a reference during artificial lift design, (c) VLP Stability, and Flow-point analysis to qualitatively understand unstable flow in the wellbore. A new critical rate calculation workflow is developed to quantitatively confirm liquid loading. This workflow utilizes published critical gas rate correlations and wellhead pressure as a weighing criterion to estimate a weighted average critical rate. A separate data-driven model, where machine learning is used to estimate critical rate for a target well given its well parameters is also formulated. Both workflows are shown to better predict critical gas rate than most published models. If liquid loading is confirmed, applicable lift systems are designed, and their production impact is gauged through nodal analysis. With a direct comparison of all applicable systems, most suitable system is selected that maximizes incremental production. Design & Review workflow is applied to a field in Lower Indus Basin, Pakistan. Several wells are evaluated to check if liquid loading is a problem and artificial lift can improve production. S-field is the largest field in this dataset, where 10 wells are evaluated. Among the technologies suggested for these wells are Gas lift, Coiled Tubing Gas Lift, and Plunger Assisted Gas lifts. Beam lift and velocity strings are found to be less effective in the specific case of S-field. Several artificial lift selection workflows are published that focus on selecting lifts for oil wells. Most only focus on the lift selection and do not include any production analysis to ascertain if liquid loading is the cause of low production. Further, many critical rate correlations are published however most are applicable for specific ranges of well parameters. This study attempts to provide a thorough gas well deliquification workflow. It includes production analysis to quantify root cause, new critical rate calculation that is universally applicable on most wells, and artificial lift selection process, specific to gas well deliquification, to select the most suitable lift system