ALRDC Technical Library

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by: Kenneth Barker, Vern Disney, Wayne Peterson — Added 6/11/2009 12:00:00 AMSWPSC - Artificial Lift Information

Hot oil treatment of flowline and downhole paraffin problems is still common in the oilfields of North America. The use of chemical programs has been growing but often the industry is unsure which type of treatment should be done and if these programs are more cost effective than hot oiling. This paper will attempt to show, based on the paraffin problems being experienced, which type of chemical treatment would be most cost effective for a particular problem. Case histories of economic treating programs will be presented.

Adaptive Product Technology for Coalbed Natural Gas (CBM)
by: Bill Grubb — Added 6/12/2009 12:00:00 AMSWPSC - Artificial Lift Information

The Coalbed Natural Gas Industry, or Coalbed Methane (CBM) continues to gain global popularity and momentum. However today, CBM operations are one of economic challenges. Varying coal seam depths, rapidly declining water production rates, uncharacteristic well completions, sand, coal fines, etc., prohibit using just one form artificial lift equipment. Successful CBM production operations demand multiple product lines. Weatherford determined that a new approach was needed that offered multiple product lines in addition to modifications of conventional artificial lift products. A presentation will be prepared that outlines the challenges CBM production presents to operators. This paper and presentation will discuss old artificial production techniques and new approaches. Because there is a never-ending focus on lowering lease operating expenses (LOE) operators continue to push manufacturers into modifying and or developing new production products. Weatherford has a dedicated CBM

Adjustable Speed Drives (ASD'S) For Artificial Lift Systems
by: Ralph Harding — Added 9/20/2009 12:00:00 AMSWPSC - Artificial Lift Information

For years we have known that “Long and Slow” is considered a Best Practice for rod pumped wells and that continuous running is best for ESP’s. In a perfect world we would have the ability to slow down or speed up a pump unit or ESP to match fluid inflow and to vary the speed of the up and down stroke of the rod pump system to minimize rod buckling.

In reality, we design a rod pump system for 80 to 85% run time and minimize pump off pounding with a POC. Our ability to do this is often limited by pump unit or sheave size. Fluctuating production results in high fluids or cycling of the artificial lift system. For ESP’s we usually adjust the operating frequency based on monthly fluid shots.

The industry recently took a step toward that “Perfect World” with Adjustable Speed Drives (ASD’s).

Challenges Faced by Typical E&P Companies
by: Cleon Dunham, Hal Rabbino — Added 6/13/2009 12:00:00 AMSWPSC - Artificial Lift Information

Most E&P companies or departments in the petroleum industry face significant compression in resources – both staffing and funding. These organizations are challenged to produce more oil and gas, under more difficult conditions, at lower costs, and with smaller and less well trained staffs.

This paper presents an approach known as GRASP for strategic analysis of typical E&P organizations. The GRASP method highlights the Goals, Resources, Actions, Structures, and People that such organizations must have (or acquire) and effectively deploy to successfully compete in the modern E&P environment.

This analysis can be used to address such difficult questions as:

What are the optimal:
• organizational structures for surviving and thriving in the modern E&P business
• tradeoffs in satisfying financial shareholders, employees, suppliers, and external stakeholders
• interfaces and interactions between the separate groups in the organization
• allocations of people and financial

Laboratory Tested Downhole Gas-Solids-Liquid Separator
by: Delwin Cobb, Roy Arterbury — Added 6/9/2009 12:00:00 AMSWPSC - Artificial Lift Information

This paper reviews the design features and laboratory tests for a unique downhole gas-liquid-solids separator. The objective of this project was to develop a combination gas-anchor and desander that would efficiently remove gas at relatively high flow rates.

The device can be used with PCPs and rod pumps for a wide range of conditions. A shroud is required to use this separator with ESPs or ESPCPs. Scaled-model tests were used to evaluate the unit at high flow rates. Configurations that produced low efficiencies are also presented.

Overview of Beam Pump Operations
by: James F. Lea, Lynn Rowlan, Jim McCoy — Added 9/20/2009 12:00:00 AMSWPSC - Artificial Lift Information

Beam pumping systems are the most commonly applied world wide artificial lift method. This paper reviews many of the concerns that operators face when using the sucker rod pumping system. The beam pump concerns are introduced with a review of the advantages/disadvantages of the system. Next automation and POC are discussed. What are the most commonly automated operating parameters are examined and the technique of configuring POC set points is illustrated. To maintain efficient operation requires that pumping should be done only when the pump is filled with fluid. Methodology for designing to efficiently produce the well by selecting pumping speeds, stroke lengths and plunger diameters are reviewed.

Incomplete pump fillage, tagging on the downstroke, and other downhole conditions contribute to rod buckling and subsequent accelerated rod/tubing wear. Commonly applied solutions such are weight bars and rod guides are stated. Dynamometer cards, particularly calculated downhole pu