核磁共振测井仪主控电路高温化设计

High-temperature Design for the Main Control Circuit of Nuclear MagneticResonance Logging Instrument

核磁共振测井技术能测量地层孔隙度和渗透率,并对地层孔径分布做定量分析,在国内外测井行业中得到广泛应用[1]。近年来,海上油气勘探逐渐走向深海深地等区块,原有的一维核磁共振测井技术难以满足要求。对此,该研究中首次提出将SIP技术和MCM技术应用于核磁共振仪器中,将原有的DSP和FPGA晶圆成功封装在模块内部[2],研发出了高温主控电路,其耐温指标从150℃提升到205℃,并在高温环境下验证了模块的可靠性。

Nuclear magnetic resonance logging technology can measure the porosity and permeability of the formation,and quantitatively analyze the distribution of the formation aperture,which has been widely used in the logging industry at home and abroad.In recent years,offshore oil and gas exploration has gradually moved to deep sea and deep ground,and the original one-dimensional NMR logging technology is difficult to meet the requirements.In this study,SIP technology and MCM technology are applied to the NMR instrument for the first time,the original DSP and FPGA wafers are successfully encapsulated in the module,and the high temperature main control circuit is developed,its temperature resistance index is increased from 150℃to 205℃,and the reliability of the module is verified under high temperature environment.