Use of Laboratory Scale Apparatus for Simulation of Downhole Stimulation Monitoring With Distributed Temperature Surveys

摘要

Adequate fluid placement and complete zonal coverage during a matrix acid stimulation is critical to the success of a treatment.The use of distributed temperature sensing(DTS)is a relatively new technique tha can be used for monitoring downhole fluid placement during a treatment.It uses a fiber-optic distributed temperature-monitoring system to provide continuous temperature profiles throughout the entire length o the well,giving relevant information to perform qualitative and,in some cases,quantitative analysis o fluid placement downhole. This paper describes the design and construction of a laboratory scale flow-loop apparatus to demonstrate the application of DTS technology for downhole fluid placement monitoring.The apparatu constructed contains three inlet and exiting points to simulate well perforations,a method to raise or lowe fluid temperature and thus introduce temperature spikes or tracers,and optical fiber and sensing equipment and instrumentation to measure and compare measured and calculated rate data.The system is capable of simulating several well flow conditions,such as fluid injection,fluid production and crossflow. The designed apparatus has proven to be versatile,compact,and useful for understanding and training professionals regarding how DTS technology can be used for monitoring downhole fluid flow and placement.