Core Lab welcomes Guardian Global Technologies as part of the Core Lab Team!
Click here to learn about Guardian
and their complementary next generation Production Enhancement technologies.
Reid, Mark, Coastal Oil & Gas Corporation; Holcomb, David, ProTechnics International,
Inc.; Waak, Kyle A., Atlas Wireline Services, Western Atlas International
Utilizing a newly developed low density zero wash tracer carrier (1.1 - 1.5 gm/cc),
acidizing treatments performed across large gross intervals consisting of thinly
laminated carbonate/ sand stone reservoirs have been more accurately diagnosed with
respect to placement efficiency. Multi-isotope tracer in combination with spectral
gamma ray logs are used to evaluate and optimize acid treatments involving various
diverting processes (i.e., rock salt/benzoic acid; ball sealers). Acid diverter
treatments are evaluated using multi-tracer spectral gamma ray logs and subsequent
efficiencies shown. A new low density tracer carrier that allows more effective,
safer transport and placement of the isotopes was used and significantly improved
the log interpretation. Example case histories of acid treatments evaluated using
the new low density tracer carrier will be presented for treatments done in Utah,
(1) Acid treatments performed in long multi- perforated intervals using various
diverting techniques were shown to have different coverage distribution than expected
or indicated by treatment pressures.
(2) A new low density tracer carrier provides a clearer log definition where multi-isotopes
are used to define acid stage and diverter stage distribution.
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