18 JANUARY 2024 WorldWide Drilling Resource® Understanding Bit Types Adapted from Information You know drilling is all about the geology, so it is no different when drilling for water wells. Rock formation type, depth of overburd You might need roller cone bits, step drag bits, claw, reamer, or PDC bits for water well drilling, but it’s dependent on the application. Step drag bits are commonly used for drilling pilot holes. They are useful in this application because their cuttings are easiest to they have the longevity many other bit types lack. Step bits are used in sand, clay, and other medium-hard rock formations thro formations because they will not be able to shear effectively. Roller cone bits are identifiable by their rolling cone inserts. These cutting structures are useful for drilling through tough soil and and chip hard rock formations while remaining productive. These bits are used at lower penetration rates, and are especially effe PDC bits can be used for water well drilling applications if the aim is to drill very precisely in soft to medium rock formations. Th and productive cutting structure on the bit. PDC bits are able to achieve high penetration rates while in use. Claw bits are useful if the water well drilling site has a high volume of clay. This bit is designed to use its uniquely shaped fing through. These bits are highly durable and the cutting structures (fingers) can be replaced when worn. Reamer bits are often used in water well drilling to widen the borehole and keep the hole straight. The cutting surfaces of these b and prevents bits from becoming gummed up with clay. Most commonly, reamer bits are used in sandy soils or clay formations. So regardless of site geology, there’s a bit for it. WTR CUSTOM SPECIALTY WINCHES FOR WELL DRILLING AND PUMP HOIST TRUCKS Manufactured with your specifications in mind BLOOM MANUFACTURING, LLC Custom Engineering Solutions Since 1910 Independence, IA 50644 USA www.bloommfg.com P: +1 319-827-1139 P: 800-394-1139 F: +1 319-827-1140 DESIGNED FOR OUTSTANDING PERFORMANCE & SAFETY MAINLINE WINCHES 3000 to 35,000 pounds Up to 130 feet per minute SANDLINE WINCHES 1800 to 8000 pounds Up to 800 feet per minute WINCHES
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