Physicochemical behavior of control fluids when they come into contact with the formation to be drilled

Abstract

With this project, comparision tables were made on the chemical interaction of the drilling fluid when it comes into contact with the lithology of the Ku, Maaloob and Zaap asset formations. Therefore, the problems that arise causing lag times were analyzed and to determine if the drilling fluids were the cause of problems such as "rock mechanics, operating conditions or drilling practices" effects in particular or not. It is well known that the control fluid in drilling is composed of a base, it can be water or oil and a set of chemical products called additives, therefore, it is a system that when in contact with lithology will modify the properties of the rock causing damage to the formation. When drilling, the optimal conditions must be provided to avoid complications such as collapses, sticking, entrapments, partial or total losses of circulation, resistance or dragging, which are the cause of delay times and that translate into thousands of dollars of loss for the productive company of the state. For this reason, the cause of the problems caused by the choice of fluid in each drilling stage must be known, where it was supported by data taken from the drilling of the wells under study, comparing the problems presented and thus determining if it was caused by the selection of hydraulics in drilling and fluids in contact with lithology / rock meter by meter. As a result of the work, the problems that occur and that generate the non-productive times in the drilling of wells, caused by drilling fluids, are exposed in order to make quick reference tables for the reduction of such times.