Increasing number of problems in the drilling operation requires the development of more advanced technology. In the development of several drilling methods have been used, some methods of drilling has been performed, among others:
1. Drill mashed
How to make a drill hole is made by mashing numbukkan drill the soil layers to be penetrated. The drill bits are constructed of a mandrel pipe casing and tied at the ends of cable made toothed strong to damaging rocks, being cuttingnya into the cylinder which is a trap or traps, then raised to the surface for disposal. To keep from falling down the hole wall then gradually lowered casing.
Drill mashed historically never reached up to 1,300 meters.
Figure 1.1. Cable Tool Drilling scheme.
2. Drill Play
In 1903 the play method was introduced in the field of oil Spindel top US state of Pensylvania Texas Rotary drilling is done with the intention of making the wellbore by turning a series of drills to drill in rock layers that were easily destroyed, while cutting lifted kemerkuaan with drilling mud circulation system. To perform rotary drilling equipment is needed more support in order to secure drilling operations.
Roraty drilling can be carried out, supported by five major systems are very important in the smooth running of the drilling process, namely:
1. Power System (Power System)
2. Lifting System (Hoisting System)
3. Rotate System (Rotating System)
4. Circulation System (Circulating System)
5. Prevention System Bursts Liar (BOP System)