USE OF TRACERS FOR DETERMINATION OF HYDRAULIC FRACTURING PARAMETERS

Abstract

Background Currently, multistage hydraulic fracturing is one of the most commonly used technologies for stimulating production. Traditional technologies for conducting geophysical work on horizontal shafts are associated with expensive, time-consuming and risky work on lowering geophysical instruments into the wellbore. To solve the problem of diagnosing inflows in horizontal wells after multi-stage hydraulic fracturing, tracer studies allow. The technology using tracer tests in hydraulic fracturing is used in wells where hydraulic fracturing is planned at several intervals of one or several geological objects in order to monitor and evaluate the potential of each interval, both in vertical wells and in horizontal wells using all technologies Multistage fracturing: ISO-Jet, CobraFrac, Mangoose, BioBalls, multi-stage fracturing with selective packer, multi-stage fracturing with various underground arrangements in versions with saddles or burst couplings, multistage fracturing on coiled tubing. The method of obtaining hydraulic fracturing parameters using labeled reagents (tracers) is poorly understood and not fully disclosed. However, the information that tracer studies suggest is quite large, and the data obtained in the course of such studies have a low error. As tracers during research, water-soluble and oil-soluble chemicals tested in practice are used, which are not sorbed or minimally sorbed by rock. It is necessary that they possess the ability of preferential selective penetration into the reservoir fluid of only the same breed as their hydrodynamic carrier. Aims and Objectives To determine the main parameters of hydraulic fracturing using tracers in the process of well research. The tasks are to calculate the productivity of frac ports and determine their water cut. Results On the basis of field data, fluid inflows were diagnosed at specific hydraulic fracturing intervals, determining the water cut of the interlayers and identifying the tendency to watering the horizons under consideration, calculating the productivity of hydraulic fracturing fractions, as well as plotting the exploitation wells for operation.