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Acidizing/stimulation

Study Investigates Ineffectiveness of Acid Fracturing for Tight Reservoir Rock

This paper describes the analysis of actual performance data for acid fracturing in a tight carbonate formation to investigate the ineffectiveness of the process.

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June 1, 2023
Journal of Petroleum Technology
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Conductive channel-formation core from a depth of 7,575 ft with 15% ZCA at 110°F before test (a) and after test (b).
Fig. 1—Conductive channel-formation core from a depth of 7,575 ft with 15% ZCA at 110°F before test (a) and after test (b).
 

The complete paper describes the analysis of actual performance data for acid fracturing in a tight carbonate formation and the ineffectiveness of the process as measured by the performance responses of the producing wells. An included case study relates to a tight formation that is considered a reservoir rather than a source rock. The formation permeability is in the range of 0.1–5 md. Development has been through numerous horizontal wells with limited multistage acid stimulation.

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