PDC bit, cone bit use precautions

According to the bit body material classification

1, carcass PDC drill bit

Carbide Diamond Composite (PDC) A drill bit is a type of cutting drill that w©elds a diamond composite sheet by brazing on the drill body. The carcass bit is sintered wit→h tungsten carbide powder and brazed with tungsten carbide' carcass on the polycrystalline diamond composite sheet with natural diamond.

2, steel type PDC drill bit

Steel body PDC bit, is nickel, chromium, molybdenum alloy≥ machining forming. After the heat treatment in the drill body on th e drilling, strong man-made polycrystalline diamond composite sheet into the (tight fit) dri ll body, with cylindrical tungsten carbide path.

According to applicable industry classification

1, Geological exploration with a composite drill bit is mainly used for geolo gical exploration and exploration of composite chip bit, sui♠table for soft to medium hard rock, and now some manufac✘turers of new research and development of new composite film can b"e applied to ten hardness of the rock.

2, coal field drilling with composite chip bit is mainly used for coa₩l mine drilling and excavation. Generally speaking, the rock formation is relativ ely soft, the composite bit is widely used, such as anchor bit, ∏three-wing drill and so on.

3, oil exploration with a composite bit is mainly used in oil and gas drilling drill bit. •At present, the oil field with a composite bit is all the composite drill bit inside th‍e highest cost, the highest requirements. Can be said that the composite chip inside the arsenal ∏bit.

Drill use precautions

  Do not hit the cone bit when replacing the drill bit.

  To keep the mud clean, to prevent blocking drill bit water,↑ and affect the use of drill bit. C, drill down control speed, to prevent su★dden resistance, so that the cone bit to play a better effect.

  Keep two pumps on the water well. E, keep the bottom of the net without  falling objects, from the drill, drilling are equipped with scraper or steel plate t¶o cover the wellhead, often check the jaw insurance pi≥n and wellhead tools to prevent the wellhead fall.

  Pay attention to the drill, to prevent drilling, drillλing.

  Encountered a bad drill, jump drilling time to adjust the drilling parameters.

  Cone bit drill in the end, the first cycle of about ten minutes, with 1-2 tons dr&illing about 0.5 meters, slowly pressurized to 6-8 tons drilling. Drill evenly, to prev↔ent the sudden damage to the teeth, drilling pressure is general±ly not more than 10 tons. Encountered when drilling slow, to analyze, if it is because of the ♣reasons for the sandwich should be patient, do not blindly add pressu₹re.