ALRDC Technical Library

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Artificial Lift Concerns for Gas Well De-Watering
by: Rober Lestz, James Lea, Chris Cos, Akani Lawal, T. Oetama and Divyakumar Garg — Added 9/20/2009 12:00:00 AMSWPSC - General Gas Wells

As gas wells deplete, it is very common for additional water and sometimes condensates to begin to accumulate in the flow path (tubing) of the well. This liquid loading reduces the gas flow rate and can even stop the flow rate completely. There are many solutions to the gas well de-watering problem, but what is the best solution? Solutions include smaller tubing, plunger lift, addition of surfactants, wellhead compression, smaller tubing, pumping methods such as beam pumping, possibly injection of liquids below a packer to an underlying zone, gaslifting of gas wells, and other methods. This problem is sometimes solved by fieldwide investigations of what has worked best in a particular field. Here considerations are presented for perhaps a newer operator, to allow a better selection of methods for lifting fluids from a gas well initially. Factors such as effectiveness, initial cost, continuing costs such as chemical costs or power costs, manpower or servicing needs, and well characteris

Gas Well Deliquification Using C-25 & C-40 Pumping Units
by: Cody Pye, John Roam — Added 9/20/2009 12:00:00 AMSWPSC - General Gas Wells

Higher gas prices have presented new opportunities in gas fields. An imperative issue throughout these fields is liquid loading. This paper discusses and presents results from a low rate, low cost deliquification project. Inexpensive pumping units with a small motor and pump are installed to keep water off the formation, enabling the production of gas. This is a long term solution allowing the well to produce to its economic limit in an efficient, low maintenance system.

Multi-Well Management Systems, Part Two - Methods for Maintaining Peak Performance in Old Gas Fields
by: Richard Reese — Added 9/20/2009 12:00:00 AMSWPSC - General Gas Wells

Are your gas wells operating at peak performance? Are down-hole or reservoir problems unknowingly keeping your well from producing at its maximum capacity? This paper will address these problems by introducing quick methods of identifying underperforming gas wells and then diagnosing them to determine how to increase their productivity. The use of simple “production indicators” will be illustrated as a way of quickly sorting through large numbers of producing gas wells, and short listing those with potential problems and uplift opportunities. Some of the problems addressed include liquid build-up in the wellbore, skin buildup in the completion or near wellbore reservoir rock, paraffin, scale, or tubular restrictions. Quick ways of diagnosing these problems will be illustrated with examples. A brief review of techniques from the first paper on this subject, MULTI-WELL MANAGEMENT SYSTEMS, Part One – Gas Well Operations, which was given at the 2004 SWPSC, will also be summarized and shown