/biz/ - Business & Finance

>https://jpt.spe.org/changing-equation-refracturing-shale-oil-wells

From the article

After a refracture has been done, the next step is to find out how it went and apply the lessons learned to the next job. Mike Flecker, president of ProTechnics at Core Laboratories, said the company is mining its diagnostics data from the dozens of refracturing treatments that it has worked on using proppant tracer technology.

The company thinks that by identifying the correlations from the best jobs, it can help develop a refracturing prescription that might include how much proppant to use, pumping pressures to apply, what fluid volumes to pump, fracturing rate, and type of diversions needed. But just like a medical prescription, the exact nature of the treatment will depend on the patient. “There is not going to be one cookie cutter answer,” even for the same sections of a field, Flecker said.

Proppant tracers are often used to tell if an “undrained” area of the reservoir was accessed. This provides confidence that new reserves have been added as opposed to accelerating the production of existing reserves.

If an operator used proppant tracers in a well’s initial completion, then the data may be used to establish a baseline for future opportunities. When proppant tracers were not used, Flecker said, “it becomes even more important that you do it on the refrac because that is the one that has even more variables than the original frac job.
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