The ever‐increasing quest to identify, secure, access, and operate oil and gas fields is
continuously expanding to the far corners of the planet, facing extreme conditions toward …

With the development of different segments within the drilling technology in the last three
decades, well drilling has become possible in harsh downhole conditions. The vertical well …

Deep closed-loop geothermal systems (DCLGS) are introduced as an alternative to
traditional enhanced geothermal systems (EGS) for green energy production that is globally …

Poor hole cleaning is a major concern in coiled-tubing drilling (CTD), and it is often
associated with long nonproductive time that contributes significantly to the operational cost …

Well construction is a complex multi-step process that requires decision-making at every
step. These decisions, currently made by humans, are inadvertently influenced by past …

The authors have developed a 1D two-layer-model transient-cuttings-transport simulator that
predicts the transient behaviors of cuttings transport, including the concentration and slip …

Current topside and downhole instrumentation at the wellsite has been developed to
manually conduct drilling operations. The emergence of automatic drilling-analysis software …

This study investigates the wavy distribution of the cutting layer in an entire wellbore
considering a dune mechanism. First, a fully transient two-layer model of cuttings transport is …

High‐torque, low‐speed drilling mud motors are typically used to drive rotary‐steerable
systems (RSS) to improve the rate of penetration (ROP) of the RSS bottomhole assemblies …

Inadequate hole cleaning is one of the main reasons for inefficient operations in extended-
reach drilling. The mechanism of cuttings transport under the back reaming operation, which …