A water-base fluid for use in drilling, cementing, workover, fracturing and abandonment of subterranean wells through a formation containing shale which swells in the presence of water. The mobile consumable API can be provided and made available to mobile app developers on a separate, stand-alone platform, and may act as an intermediary between the mobile app and the primary mainframeenterpriseback end system. In the same position with respect to the cutting axis, the cutting edges of the cutting punches define a cutting gap which extends in the transverse direction and occupies a gap width in a width direction oriented at a right angle to the transverse direction and to the cutting axis.