A sliding sleeve hydraulic fracturing sliding sleeve ball passing monitoring and identifying system

Abstract

The one or more embodiments of the specification provide a sliding sleeve hydraulic fracturing sliding sleeve ball passing monitoring and identifying system, which comprises a high-precision chromatographic capacitance measurement system composed of a sensor part, a power supply and a shell package, and a computer graphics measurement interface; the sensor part comprises two parallel substrates, and symmetrical capacitor plate arrays are arranged on the substrates to collect the capacitance change signals corresponding to the "compression-expansion companion waves" generated when the blocking ball passes through the sliding sleeve; the method for monitoring the sliding sleeve passing state by using the "compression-expansion companion waves" solves the problem that the conventional pressure monitoring cannot identify weak signals; the three core technical problems of noise, distributed capacitance and temperature drift in the precise capacitance measurement are solved, and the high-precision measurement of small capacitance of the af level is realized; the nondestructive measurement method is adopted, and the existing fracturing process and equipment do not need to be changed, and the construction compatibility is strong.

Images