TY - JOUR AU - Almalikee, Hussein Saeed AU - Al-Najm, Fahad M. PY - 2020/06/01 Y2 - 2024/03/29 TI - Optimization of Deviated and Horizontal Wells Trajectories and Profiles in Rumaila Oilfield JF - Journal of Petroleum Research and Studies JA - Journal of Petroleum Research and Studies VL - 10 IS - 2 SE - DO - 10.52716/jprs.v10i2.348 UR - https://jprs.gov.iq/index.php/jprs/article/view/348 SP - 36-53 AB - <p>Directional and horizontal wellbore profiles and optimization of trajectory to minimize<br>borehole problems are considered the most important part in well planning and design. This<br>study introduces four types of directional and horizontal wells trajectory plans for Rumaila<br>oilfield by selecting the suitable kick off point (KOP), build section, drop section and<br>horizontal profile. In addition to the optimized inclination and orientation which was<br>selected based on Rumaila oilfield geomechanics and wellbore stability analysis so that the<br>optimum trajectory could be drilled with minimum wellbore instability problems. The four<br>recommended types of deviated wellbore trajectories include: Type I (also called Build and<br>Hold Trajectory or L shape) which target shallow to medium reservoirs with low<br>inclination (20o) and less than 500m step out, Type II (S shape) that can be used to<br>penetrate far off reservoir vertically, Type III (also called Deep Kick off wells or J shape)<br>these wells are similar to the L shape profile except the kickoff point is at a deeper depth,<br>and design to reach far-off targets (&gt;500m step out) with more than 30o inclination, and<br>finally Type IV (horizontal) that penetrates the reservoir horizontally at 90o. The study also<br>recommended the suitable drilling mud density that can control wellbore failure for the four<br>types of wellbore trajectory.</p> ER -