Optimizing Plug Drillout Operations with Real-Time Flowmeter and CT Data, Eagle Ford Shale

Optimize completion operations during drillout campaign

To increase efficiency and optimize postfracturing plug drillout operations in the Eagle Ford Shale of South Texas, an operator collaborated with Schlumberger on a solution that would improve meeting its completion objectives.

Introduce Vx Spectra flowmeter to completions operation

The operator requested that the Vx Spectra surface multiphase flowmeter be integrated into its drillout operation along with standard drillout equipment. The Vx Spectra flowmeter gives an output of three-phase flow rates in standard conditions through low-energy gamma radiation measurements with fluid dynamic models. By measuring from a single point in the venturi throat, the flowmeter is able to constantly determine the precise phase fractions of water, oil, gas, and solids during the job.

To determine the differential pressures during the job, Schlumberger set up two pressure sensors on the inlet and outlet of the plug catcher, both connected to the Vx Spectra flowmeter. Differential pressure acquired by the Vx Spectra flowmeter was integrated with measured proppant flowback data to identify when the solids would return to surface. Additionally, coiled tubing data was used to identify the return time for plug debris and for pumped gel sweeps. With these advanced data acquisition and evaluation processes, the well operator was able to obtain better control of the plug drillout process.