Many multiple completion wells in the Gulf Coast often develop tubing string communication through leaks that may not be detected by changes in the production log of a well. Routine geochemical analyses of reservoir fluids, however, can provide an early indication of such problems and allow timely corrective action. This paper describes detection of production tubing leak by several time re-solved geochemical analyses of oils. It demonstrates that the geochemical technique is an effective and inexpensive tool for monitoring well performance.

The technique is also capable to quantitatively determine mixes of commingled production caused by the plumbing problem.

Keywords:
maturity parameter, society of petroleum engineers, end member, spe 29478, leak, main pass 299, original oil, isotopic composition, composition, long string
Subjects:
Fluid Characterization, Geochemical characterization, Completion Installation and Operations
Copyright 1995, Society of Petroleum Engineers
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