QDRILL IN: Water-Based Drill-In Fluid
Anchor USA’s water-based drill-in fluid, QDRILL IN, is applicable for drilling sand and carbonate production zones, horizontal or vertical, with varying rheologies and filtration control properties attainable. The QDRILL IN system is moderately resistant to anhydite and salt contamination and can be made inhibitive with the addition of a potassium salt or amine.
The system is used exclusively for drilling through reservoirs with the intention of minimizing rock damage. Consequently, it is essential to select the right size and amount of calcium carbonate/acid degradable weighing agent to be used. QDRILL IN is a specially-devised system exclusively used for drilling through reservoir, ensuring formation damage is minimized as much as possible.
QDRILL IN can be effectively used as a replacement for other bridging drill-in fluids (salt saturated polymer system, resin polymer system, cellulosic fiber polymer system). The choice of fluid is dictated by formation damage mechanism.
We Deliver, No Excuses
Designed for drilling the reservoir
Minimizes skin damage
Filter cake is easily removable
Easy to maintain
Completion and Drill-in Systems
|Property||Typical Range||Min/Max Recommended|
|Fluid Weight, ppg (kg/m3)||8.7 - 11.0 (1040 - 1320)||< 9.6 (< 1,150)|
|Plastic Viscosity, cP||15 - 35||< 40|
|Yield Point, lb/100ft2 (Pa)||12 - 30 (6 - 15)||< 50 (< 25)|
|Gels, lb/100ft2 (Pa)10"/10'||3 - 10 / 16 - 25 (2 - 5 / 8 - 13)||As required|
|pH||9.0 - 10.0||< 10.5|
|Calcium, mg/L||40 - 200||< 200|
|MBT, ppb-eq (kg/m3)||0 - 5, 0 - 14||< 10 (< 30)|
|API Fluid Loss, cc/30min||4 - 8||< 8|