System and method for monitoring sand production rate of oil-gas well

Abstract

The invention relates to a system and a method for monitoring the sand production rate of an oil-gas well. The system comprises a high-frequency signal sensing device and a control device, wherein the high-frequency signal sensing device comprises an oil stream introducing pipeline and an oil stream returning pipeline which are arranged in parallel on an oil-gas production pipeline of the oil-gaswell; the oil stream introducing pipeline is provided with a fixed displacement pump; the oil stream returning pipeline is provided with a pressure sensor; an oil stream monitoring pipeline is arranged between the oil stream introducing pipeline and the oil stream returning pipeline; a signal sensing drum is arranged between the oil stream monitoring pipeline and the oil stream returning pipelineand bonded with a high-frequency signal sensor; the control device comprises a data acquisition system which acquires pressure and impact signals monitored by the pressure sensor and the high-frequency signal sensor, transmits the acquired signals to a filter amplifier for filtering and signal amplifying and transmits the filtered and amplified signals to a signal processing unit; and the signal processing unit analyzes and judges the impact signals monitored by the high-frequency signal sensor so as to monitor the sand production rate of oil-gas stream in real time. The system and the methodare suitable for the field of oil-gas well development engineering.

Description

technical field [0001] The invention relates to a monitoring system and a monitoring method, in particular to a monitoring system and a monitoring method for the sand output of oil and gas wells. Background technique [0002] In the process of oil and gas production, due to the loose cementation, low strength of the reservoir, and the erosion of fluid, the structure of the sandstone layer near the perforation tunnel or at the bottom of the well is destroyed, and the sand particles migrate out of the oil layer with the fluid and enter the wellbore. Oil and gas wells produce sand. With the increase of energy demand and the rapid increase of oil and gas development, the problem of sand production has become the key problem that plagues oilfield production. If it is not detected early and effectively controlled, it may cause sand burial in oil and gas layers, sand plugging in oil pipes, and accumulation of pipes on the ground. Sand and other consequences have a great impact on ...

AI Technical Summary

Problems solved by technology

At present, domestic research on sand production in oil wells is mainly limited to sand production mechanism and sand production prediction, but only relying on sand production prediction is far from meeting production needs, and there is an urgent need for methods that can continuously monitor sand production on the ground And equipment, real-time monitoring of oil well sand production, in order to guide oil production to adjust parameters in time, ensure moderate sand production, achieve the purpose of improving oil well productivity and prolonging oil well production life

Images