Estimation of the hydrodynamic perfection of the well-reservoir system at the stage of opening a productive reservoir

Abstract

The article deals with the issues of improving the quality of well completion, which ensures the hydrodynamic perfection of the “well-reservoir” system. The quality of each operation is proposed to be assessed by generalized coefficients, on the basis of which, according to the proposed procedure, the well quality indicator should be calculated. It is proposed to evaluate the quality of the well: excellent, good, mediocre and poor, the values of the generalized coefficients are proposed to be calculated depending on the values of the parameters that indirectly characterize the quality of the completed work stage. It is stated that the quality of reservoir development is proposed to be assessed by the indicator “productivity assessment”. An algorithm for calculating the quality index is given. The main directions that determine the quality of well completion and ensure the hydrodynamic perfection of the “well-reservoir” system are considered: technical; technological; organizational. The mechanism for assessing the quality of each stage of well construction by a certain number of parameters (quality elements) and characteristics is outlined. Approaches for determining the quality of a well by a set of factors characterizing the results of successive operations during its construction in a complex are outlined. A list of controlled criteria for assessing the conformity of well construction, as well as formulas for calculating the values of their deviations from the requirements of project documentation, is given. Aim. Development of methodology and mechanisms for assessing the hydrodynamic perfection of the “well-reservoir” system formed at the stage of wells. Methods. Collection, generalization and processing of field and expert materials, observation results, calculations of the obtained theoretical dependencies and their analysis using methods of mathematical statistics with the help of modern hardware and software. The tasks were solved by carrying out theoretical and experimental studies. Results. A methodology for assessing the hydrodynamic perfection of the “well-reservoir” system, which makes it possible to evaluate the efficiency of well construction and completion and the implementation of technological solutions for design documentation.