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描述了以MSP430单片机为主控制器的新型井下压力采集系统。该系统采用惰性气体作为压力传递介质,通过地面对井口气体压力的测量,来推算出井下测压深度处压力的大小。详细叙述了系统设计原理与软硬件的实现方法,整个系统包含数据采集、数据处理和数据存储等。经过实验室和现场试验验证,这种压力检测系统具有准确度高、效率高和稳定性好等优点,可以满足测量现场环境的要求。油层的压力大小是有效反映油藏能力大小及井下状态的重要指标,所以获取可靠、有效且实时的井下压力采集数据显得十分关键。目前,我国油井主要采用的是电子式井下压力测量系统进行
Describes a new type of downhole pressure acquisition system based on MSP430 microcontroller. The system uses inert gas as the pressure transmission medium, through the surface gas pressure measurement at the wellhead to calculate the size of the pressure at the depth of underground pressure measurement. Described in detail the system design principles and hardware and software implementation, the entire system includes data acquisition, data processing and data storage. After laboratory and field tests verify that this pressure detection system has the advantages of high accuracy, high efficiency and good stability, to meet the requirements of measuring the scene environment. The size of the reservoir pressure is an important index that can effectively reflect the capacity of the reservoir and the state of the downhole. Therefore, it is crucial to obtain reliable, effective and real-time underground pressure acquisition data. At present, the main use of oil wells in our country is electronic downhole pressure measurement system