Drilling operation involves a huge cost or capital intensive, using high technology and high risk. The personnel who work on drilling operations should have a good knowledge also about safety. So that drilling operations can run smoothly, and accidents can be avoided. The contents of these subjects was prioritized to provide basic knowledge drilling technique involves understanding prior to drilling and drilling activities, the types of drilling, rotary drilling system, the system cementing, and well completion.
Drilling is technically makes the effort to secure the hole to penetrate the layers of formations rich in oil or gas. The hole is then lined with casing and cemented, with a view to the formation layer connects with the earth’s surface Where possible the extraction of oil or gas commercially. The general objective is to make the drill holes:
- Proving that the presence of oil or gas in a reservoir is penetrated.
- Means pumping oil or gas from the reservoir to the surface of the earth.
After a survey by geologists, geological survey in the form of surface, subsurface and seismic surveys, it can be stated that there is a trap below the surface. Fill the trap can not be known before the trap penetrated. Overview of a trap reservoir can be seen in Figure 2.1.
Figure 2.1. trap Reservoir
Having obtained a trap reservoir and the surface is considered a wild place is by itself the need to make the place into a place that allows the implementation of drilling operations, subsequently determined the point of drilling locations. The activities carried out are: licensing, prepare the site, preparing the way to the location, preparing the water, preparing for drilling equipment, transportation equipment to the site and set up the tower.