Accurate well placement in deep water is important to achieving successful production. Rotary steerable systems (RSS) improve well placement by steering the drill bit and the planned trajectory can be improved using logging-while-drilling (LWD) measurements which record the proximity of geological boundaries and measure reservoir quality.
During the drilling process, it is essential to have the right combination of technology and expert log analysts to achieve optimum positioning of wells and successful intersection of the best pay zones—efficiently, safely, and on schedule.
Rotary steerable systems for optimized directional drilling are combinable with measurements-while-drilling (MWD) and logging-while-drilling (LWD) sensors, including near-bit gamma ray. These systems can shorten well paths for angled wells, even in unconsolidated formations, and provide variable speed or torque as required. Real-time monitoring of the drilling environment facilitates techniques such as shock and vibration to adjust and optimize drilling parameters for maximum rate of penetration (ROP) in a variety of environments.
Directional, deep-reading, LWD measurements help drillers and geoscientists locate bed boundaries and fluid contacts in real time to optimize wellbore placement. Resistivity measurements, imaging-while-drilling services and bed boundary mapping technologies provide images of the boundaries around the borehole. This information reduces uncertainties in formation structure and formation properties, resulting in reservoir model accuracy, more reliable reserves estimation, and planning of future wells.
Additionally, seismic-while-drilling services deliver traditional borehole seismic measurements that reduce uncertainties ahead of the bit without interfering with drilling operations.