Schlumberger Technology Corporation

Pascal Rothnemer

Emmanuel Legendre

Ollivier Faivre

Jean-Claude Trouiller

Laurent Jammes

Maria Teresa Galli

Mauro Gonfalini

Patrizio Gossenberg

A method of displaying information relating to a well drilling operation, comprising generating a sub-surface model of the underground formation through which the well is being drilled; generating a representation of the well being drilled, of the drilling equipment being used to drill the well, including parameters relating to the use of the drilling equipment; generating a 3D image of the formation, the well and the drilling equipment; and generating an image within the 3D image comprising volumes representing virtual objects, such as a cone of possible well placement if drilling proceeds under the current conditions, or the envelope of investigation of a given sensor.

Well placement 3D advisor&#x2014;method and system to monitor and assist a well placement operation

Methods for evaluating the properties of formations surrounding a borehole, include the steps of measuring electrical properties of the formation from within the borehole; deriving a model of parameters of the formation surrounding the borehole; and estimating the properties of the formation using the model to interpret the measured electrical properties. In one aspect of the invention in which the formation includes a series of distributed beds, each bed having specific properties. Another aspect includes grouping similar beds, assigning one or more properties to all of the beds in a group, and using the assigned properties to estimate the properties of the formation for measurements relating to the beds of that group. Another aspect includes making several different measurements of formation electrical properties and simultaneously estimating the formation properties from the different measurements to provide a joint inversion. A still further aspect includes the use of a complex model incorporating electrical properties with other petrophysical information to estimate the properties of the formation from the electrical measurements.

Method for evaluating formation properties

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Paris, France

Pascal Rothnemer