Must see! Drilling Engineering Technology Explanation

Drilling engineering is a systematic engineering process that involves mechanically breaking rock layers to drill underground boreholes, mainly used in fields such as oil and gas extraction and geothermal development. Its core technology includes three major modules:

1. Drilling rig system

Composed of derrick, power equipment, circulation system, etc. Modern drilling rigs adopt intelligent control, such as the top drive device (TDS) to achieve automated tripping and drilling, and the drilling fluid circulation system has the functions of cooling the drill bit, carrying rock debris, and balancing formation pressure.

2. Well structure design

Adopting the "casing program" for layered protection:

Stable surface layer of conduit section (0-50m)

Technical casing (500-3000m) seals complex formations

Produce casing directly to the oil and gas reservoir

Real time adjustment of wellbore trajectory through logging while drilling (LWD).

3. Special processes

Horizontal well technology: extend the wellbore laterally in the reservoir by 800-3000m

Underbalanced drilling: maintaining bottomhole pressure below formation pressure to increase recovery rate

Pressure controlled drilling (MPD): precise control of annulus pressure gradient

The current trend towards intelligence is manifested in the application of digital twin technology, which simulates the entire lifecycle of drilling processes through 3D modeling.