Resumen de Influencia de la variación litològica y textural en la verticalidad de sondeos

Enrique Aracil Ávila, Francisco Javier Lillo Ramos, F.J. López Mendieta

• Lithology contrast texture change, fracturation or lack of consistence in drilled materials, cause variations in vertical direction of holes during drilling operations. This paper shows some examples about the correlation between well deviation and alternance of layers, clay content and altered layers.