Abstract When drilling in sliding mode, axial oscillation tools (AOT) and surface oscillation tools (SOT) are two possible solutions that are used in the industry…
Abstract This paper describes the innovative engineering workflow which has been used to ensure the safe deployment of deep production liners on long step-out wells…
Abstract As the industry continues to drill increasingly complex wells, the demand put on drilling equipment has increased and will continue to increase. Preventive maintenance…
Abstract The hydraulic effects on torque and drag modelling have been thoroughly studied in the past, yet their interpretation still causes a lot of misunderstandings…
Abstract Total E&P initiated a drilling campaign in 2018 near the foothills of Bolivia where wells can be extremely challenging and lengthy to drill. These…
Abstract Buckling of tubulars inside wellbores has been the subject of many researches and articles in the past. However, these conservative theories have always followed…
Abstract Contact friction along drill string is one of root causes of stick-slip vibrations, especially when drilling an unconventional well with a long lateral section.…
Abstract The importance of wellbore deviation is well recognized by the drilling industry. An analysis of the directional behavior of a drilling system must include…
Abstract Overcoming friction in sliding mode represents a challenging task when drilling an unconventional well with a long lateral section. Among the possible ways to…
Abstract With the current market’s high prices for drilling units and sophisticated directional and formation assessment services, low systems reliability or poor directional performance in…
Abstract Micro doglegs are a natural effect of any vertical or directional well that can explain a wide variety of down hole problems, from additional…
Abstract During drilling operations, the bit-rock and drillstring-wellbore contacts with stick-slip phenomena, fluid structure interaction, and mass unbalances distributed along the drillstring yield nonlinear dynamics…