We invite you to SPE young professionals meeting on " Drilling through unstable shales: Integrated approach and geomechanical modeling solutions." Elena Konstantinovskaya, Oleg Grachev, Schlumberger, Moscow
SPE Young Professionals meeting, October 20, 2016
Meeting will take place on 20 October,Thursday, at 1900 hours at Sushchevskiy val, 2, Moscow.
Preliminary registration is required!
Please reserve a place and send your full name (including middle name), company and job title to This email address is being protected from spambots. You need JavaScript enabled to view it. not later than 1200 on 18 October. You will have a confirmation after you’re registered.
Looking forward to seeing you!
More details about the topic
Drilling problems related to unstable shale intervals are most frequently related to mechanical instability of shales caused by borehole wall shear failure and breakout formation under insufficient mud weight. Additionally, shear failure along bedding planes of weakness can contribute to borehole instability when angle of attack is above 30-40 degree. Bedding-related vertical anisotropy (VTI) of elastic and strength parameters of shales strongly affects stress concentration around the well and borehole instability. Problems of mechanical instability of shales and examples of geomechanical modeling and wellbore stability analysis taking into account vertical anisotropy of elastic and strength parameters of shales, angle of attack and shear failure in breakouts and along bedding planes of weakness are highlighted in this presentation; recommendations on mudweight and wellbore trajectory optimization are discussed. Further, the examples of time-dependent chemical instability of shales are approached in light of chemical reactivity of pore fluid with drilling mud; recommendations on drilling mud composition and wellbore design are discussed on the basis of geomechanical modeling results.
About authors
Elena Alexandrovna Konstantinovskaya, Moscow Geomechanics Team Leader, Schlumberger. Elena finished Geological Department, Lomonosov Moscow State University, she has 30-years’ experience as geologist and geomechanics engineer, started to work in Schlumberger in 2014; completed projects on geomechanical modeling in Western Siberia and Volga-Ural region. Elena has Doctor of Science degree RAS in geology and mineralogy, worked in Geological Institute RAS in Moscow, CNRS in Montpellier, France, INRS in Quebec City, QC Canada, has experience of consulting work in oil and gas industry. Teaching experience includes course “Structural Geology” at the Laval University and “Fundamentals of Geomechanics” at the Gubkin Russian State University. Member of SPE and OGQ.
Oleg Grachev, Senior Geomechanics engineer, Schlumberger. Oleg graduated from the Mechanics and Mathematics Department of NSU and joined Schlumberger in 2010. For almost 2 years, he had been working as a completions field engineer on the Sakhalin-2 project. Then Oleg moved from the completions to the geomechanics where he has been working for 5 years already on the Sakhalin, Caspian Sea, Black Sea, Yamal, Western Siberia projects including real-time drilling geomechanics service, abnormal high-pressure prediction and 3D geomechanics modeling. Teaching experience includes course “Fundamentals of Geomechanics” at the Gubkin Russian State University.