... Abstract A mechanical earth models (MEM) is a crucial component of any well design process. Because it describes the subterranean formations in-situ stresses and rock mechanical properties, it is the main input into any geomechanics model. This means high impact issues like wellbore instability...

... communicated to act accordingly. The drilling, tripping and fluids practices can be adjusted on spot, and the main impact is the minimization of wellbore instability and stuck pipe incidents. The benefits from the automated geomechanics modelling are numerous, including safe drilling operations at lower non...

... Abstract Objective/Scope Every year the petroleum industry spends more than an estimated $6 billion in mitigating wellbore instabilities that account for nearly half of the drilling-related NPT (non-productive time). Researchers believe wellbore instability problems occur primarily due...

... Abstract Wellbore instabilities in shales have been widely recognized to be one of the drilling performance limiters. Drilling incidences such as pack-offs, tight holes, stuck pipes, and eventual fishing operations impose great challenges to not only drilling the well safely but with upmost...

... drill string wellbore integrity setting casing torque revolution sandstone well control sidetrack engineering simulation geology drilling performance sidetracked wellbore utilization mudrock bit design bit selection circulation zone simulation flow rate wellbore instability well...

... field turnkey project drilling fluid chemistry drilling fluid property Wellbore Design circulation cement plug instability statistical analysis intermediate loss zone objective wellbore instability loss circulation borehole instability loss zone wellbore integrity drilling operation...

.... There was no NPT related to wellbore instability or any of the drilling challenges previously identified. This unique organophilic clay-free and organolignite-free drilling and coring fluid relies on a specialized technology involving an interaction between the emulsifier package and the polymer additives...

... Abstract Wellbore instability caused by the dispersion of the clay is one of the most important challenges in drilling operation of fractured formations. The synthesis of new plugging inhibitors and the research of drilling fluid systems are key steps to keep the wellbore stabilization...

..., since the tool modifications, shows the value of technology adaption and improvement following field experience and operator input. 5" The directional assembly was stuck for 9 hours in the 8½" section, with multiple tight spots experienced due to wellbore instability, hole cleaning problems...

... Abstract Wellbore instability resulted in the largest percentage of non-productive time (NPT) during drilling stage in oil industry. Wellbore instability during drilling includes: wellbore pack-off, excessive torque and drag, blowout, stuck pipe and other related well problems. Many studies...

..., to address both formation breakouts and risk of differential sticking. If these problems are not addressed in a timely manner, initial signs of wellbore instability can aggravate with time leading to stuck pipe and loss of tool downhole. To address above issues, an integrated approach was applied during...

... enlargement. Numerous wellbore instability problems have been reported when drilling through the chemically active Nahr Umr shale formation in the Gulf area. What has escaped many drilling operators in this area is the in-situ fractured nature of the shale formation and the pronounced bedding planes in many...

... Abstract Many wellbore instability problems are being reported during development drilling at an offshore field in Saudi Arabia. It is a sandstone reservoir with shale intercalations at a depth of about 6000 ft. A few wells had to be abandoned because of stuck pipe and hole pack-off problems...