Comitt's Solution

Our technical team suggested a focused stimulation approach using the EXCITE SYSTEM for selective acid stimulation treatments of each producing zone. The EXCITE SYSTEM was set up to straddle individual perforation clusters thereby ensuring 100% zonal isolation and precise acid placement control.

Sequence Of Events

The treatment was performed in July 2018. The EXCITE BHA was RIH on 2-7/8” tubing. For each zone, fluid was pumped down the tubing string to activate the EXCITE SYSTEM. A distinct pressure signature was observed on surface each time the tool was set, and 1,000 gallons of 15% acid was placed into each zone for treatment. Once each treatment was completed, pumps were shut down, and the EXCITE SYSTEM un-set and was moved to the next zone above. A total of 46 zones were stimulated in a single trip, with time between zones as fast as 3 minutes. The entire treatment took 15 hours.

 

When POOH the tool string hung up after it encountered well bore debris. Following the EXCITE tool contingency operational procedures, a dissolvable ball was dropped into the tubing string activating the proprietary C|PAK circulation tool above the top packer. Circulation through the C|PAK was established and the BHA was POOH successfully.

Results

The EXCITE tool successfully placed a total of 47,000 gallons of acid into the target intervals. Unexpected downhole debris caused issues but was resolved using the EXCITE SYSTEM’s backup circulation feature. 46 zones were treated in a single trip with industry leading efficiency between zones. The EXCITE SYSTEM was POOH in good condition with very little evidence of wear in the sealing element. Following the treatment, the well was put back online with an initial 2X increase in total fluid volume over pre-stimulation production levels.

Benefits

• A total of 46 zones were treated in a single trip, minimizing production downtime and overall cost for client.
• The positive surface indication of setting and un-setting the EXCITE tool provided clear understanding and
confidence of downhole operations.
• The length-customizable straddle packer enabled precise placement of target zones, maximizing the treatment
results.
• The unique backup circulation feature of the EXCITE tool tackled unexpected issues effortlessly, saving client
money in intervention and fishing.
• The doubled initial production increased client’s revenue and proved the effectiveness of the EXCITE SYSTEM.

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