Technical Performance Analysis of RSS and Mud Motors: A Case Study

Abstract

As global demand for oil and gas increases, drilling directional and horizontal wells safely, efficiently and economically requires the best in expertise and technology. The drilling strategy required to reach these targets utilizes one of the several available directional drilling techniques which includes the use of Whipstock, Bent Sub, conventional directional Bottom hole assemblies, Rotary steerable system and positive displacement mud motors. Poor well trajectories become the matter of serious worry in deep and deviated sections of the wells with higher dogleg severity, lower ROP, tolls stucking which causes huge economic loss to the operators. In worst case scenarios the in-adequately drilled directional wells are abandoned. The main objective of this research study will be the intermediate drilling section of the well where the steering of the trajectories like directional drilling trajectories i.e. Slant well, S shaped well and Horizontal wells that will be considered for analysis. This study will analyze the performance of RSS and conventional mud motors, on the basis of rate of Penetration (ROP), drilling depth, and borehole quality.

Drilling Optimization by Using Advanced Drilling Techniques in Buzurgan Oil Field

“…RSS hole geometry is less harsh and calibrated compared to motordrilled wells. Eliminating ledges and complicated well pathways makes running the well's casing or production string simpler [17].…”

“…The great improvements in drilling technology make it possible to drill horizontal wells with complex trajectories and extended for significant depths [4]. In this modern period, engineering techniques were utilized in every field; consequently, a great deal of technological advancement was observed, especially in vertical and directional drilling technologies, such as the development and application of mud motor in vertical hole drilling and rotary steerable system technology to optimize drilling operations [5].…”