METHOD FOR CORRELATION OF DRILLING MODES AT CONSTRUCTION OF WELLS BY GIVEN TEMPERATURE CONDITION OF THERMODYNAMIC SYSTEM

The invention relates to oil-and-gas producing industry and can be used for correlation of drilling modes in the construction of wells. A method for correlation of drilling modes in the construction of wells by given temperature condition of thermodynamic system that is based on simulation of non-linear processes by least-mean-square method by which, according to the invention, correlation of drilling modes is carried out by a modeled map of temperature field with simulation of non-linear processes by the least-mean-square method with introduction of correction coefficients of temperature value for each specific medium, those are obtained through measurement of real data of temperature values for a specific field, and in process of simulation of temperatures of thermodynamic system at any depth of the well one calculates those by expression, where- well temperature at depth, °C;,, - correction coefficients for temperature value for specific medium, those are obtained through calculation of real data of temperature values for a specific field by system of equations,Where temperature valuecorresponds to depth, and- total sum of computing points on basis of which one forms the map of temperature field of thermodynamic system, with account of that one corrects supply of drilling solution, pressure of drilling solution and force at working device of drilling with change of drill depth. Use of the method for correction of drilling modes at construction of wells by given temperature condition of thermodynamic system makes it possible, on basis of simulated map of temperature field of thermodynamic system for specific medium, to provide possibility of correction of supply of drilling solution, pressure of drilling solution and force applied to drilling working device with change of drilling depth, and to achieve decrease of cost of carrying out labor-consuming real measurements of temperatures in process of change of drilling depth, decrease of the term of estimation of temperature condition of medium under investigation, and thus to decrease prime cost of drilling operations at well construction. Винахід належить до нафтогазової галузі і може бути використаний для кореляції режимів буріння при спорудженні свердловин. Спосіб кореляції режимів буріння при спорудженні свердловин за визначеним температурним станом термодинамічної системи, що ґрунтується на моделюванні нелінійних процесів методом найменших квадратів, за яким, згідно з винаходом, кореляцію режимів бурі