Archive of Texas PTTC Workshops

Wellbore Management Workshop

Tuesday, September 17, 2002, Radisson Hotel and Conference Center

Developed by the PTTC Texas-Permian Basin Sponsored by the Texas Region Petroleum Technology Transfer Council

Session 1: The Producing Well Improvement Process
Kent Gantz and Ed Delgado, Schlumberger IPM

Schlumberger IPM uses a systematic and continually improving method to optimize and repair producing wells. This method, called the Producing Well Improvement Process (PWIP), is a process in which well production optimization and wellbore equipment repair procedures are implemented and improved over time to provide the longest economical well life.

Session 2: Aggressive Action Program and Case Studies on Reducing Wellbore Failures in 22 Fields in 6 Permian Basin Counties
Bill Webb, consultant, Bill Webb, Inc., and Bob Kiker, consultant and PTTC Texas -Permian Basin-Program Director

This case study looks at well failures on leases producing from formations in Ector, Winkler, Regan, Crockett, Culberson, and Reeves counties, Texas. Of 406 beam-pumped producing oil wells in these counties, 112 wells experienced either a rod or tubing failure within a one-year time period. An aggressive action plan was begun to reduce future failures and complement a comprehensive well failure program. The plan included changing rod strings when a well experienced a rod failure and upgrading and inspecting tubing strings when a tubing leak occurred. This aggressive plan was fully documented and post audited; detailed cost-tracking spreadsheets verify the economic success of the undertaking.

Session 3: Artificial Lift Energy Consortium (ALEOC) Database
Noel Putscher, Amerada Hess, and Bob Kiker, consultant, and PTTC Texas-Permian Basin-Program Director

Sucker-rod pumping systems are the most numerous among all artificial lift methods used. The ALEOC was formed by 11 oil companies with the primary goal of improving oil field operations through sharing experiences. The consortium members provided beam pumping related data from about 25,000 wells, which is about 25% or sucker-rod pumped wells in the Permian Basin. A database has been developed to combine the data into a single, uniform and consistent format. The database can be queried and analyzed either via the Internet or in the desktop environment. From the query results, one can calculate failure frequencies of pump, rod, and tubing, and summarize the results in various ways. Such analysis suggest answers to questions like what component is the most likely to fail, which operating areas have typically high/low failures, and what is the performance of a company relative to the other companies. These facts have benefited each company in making engineering and business decisions.

Session 4: Polylined Tubing, A Cost Effective Option To Reduce Downhole Failures Rob Davis, Vice President Western Falcon
Polylined tubulars have proven to be successful in reducing tubing failures in over 3000 production, injection, and disposal wells in the US in the last 10 years. Five case studies, where polylined tubulars are being used by four different operators (Fasken, Conoco, Chevron Texaco, &BP), are presented.

Session 5: Modern Total Well Management: Sucker-Rod-Lift Case Study.
Lynn Rowlan and Jim McCoy, Echometer

A sucker-rod-lift field case study is presented to illustrate the procedure and benefits of an integrated analysis of pumping systems. Oilfield operators continually need to verify that their wells are being produced at optimum capacity and in a cost-effective manner. An integrated analysis of the pumping system, called the Total Well Management (TWM), is required to reduce operating costs, increase oil production, and increase net income. The integrated analysis of the pumping system must include performance and interaction of all the elements: prime mover, surface equipment, well bore reservoir. This analysis, based on data obtained at the surface without entering the wellbore, yields an accurate representation of the conditions that exist on the surface, with the wellbore, and within the reservoir.

Session 6: Paraffin and Asphaltene Formation Damage
Ken Barker, Baker Petrolite

All current stimulation techniques either ignore organic damage or bypass it. This leaves the original permeability blocked, which reduces production. Production can be restored to damaged wells if we understand the reasons why the damage occurred. This presentation describes organic damage, why it occurs, why present stimulation techniques don't work, and how it can be removed.

For more information about this and other PTTC workshops, please contact Sigrid Clift at
512-471-0320 or e-mail sigrid.clift@beg.utexas.edu.