Design Of Storage Downwell Data Acquisition System

The downwell temperature pressure, flow and water retention rate is an important parameter data of oil and gas field development, these data to study reservoir characteristics, oil is determined to play an important role in the process. But the production wells is generally inconvenient to use wireline way construction, underground environment facing high temperature and pressure, designed to meet the underground environment of storage type collecting data acquisition system is necessary.This paper is designed to store downwell data acquisition system. Firstly it introduced downwell data measurement techniques and the basis of the current state of development of domestic and foreign logging technology on the study and discusses the principles and techniques of stored downwell data acquisition system, from the requirements of the application environment and downwell equipment storage testing technology combined storage test system design principles and theory, the choice of C8051F040 microcontroller as the main chip collection using C language on MCU development system Keil μVision3 platform for writing software system designed to store downwell data acquisition system. The system realizes collect downwell temperature and real time, receiving pressure, flow rate, water holdup three parameters, and the five data to the peripheral FLASH memory chip. System work 40 days to retrieve the instrument, on the ground reading data FLASH memory via PC.By logging in Chinese oil companies to test the system, the system can work, precision acquisition and received parameters to meet the requirements, proved stored downwell data acquisition system meets the design requirements.