高溫高壓聲場測試平臺設計
發(fā)布時間：2018-08-03 21:05
【摘要】：高溫高壓三維物理模擬裝置用于油藏地層條件下復雜驅(qū)動體系的滲流規(guī)律和宏觀波及機理等試驗研究。在驅(qū)替試驗過程中實時監(jiān)測巖芯內(nèi)部各相流體的動態(tài)分布情況是試驗的關鍵內(nèi)容之一。本文旨在設計開發(fā)一套用于三維膠結物理模擬裝置的聲場測試平臺,利用超聲透射檢測的方式來監(jiān)測驅(qū)替試驗過程中各相流體的動態(tài)分布。首先根據(jù)物理模型裝置的工藝要求和測控需求,明確了聲場測試平臺的設計指標和主要功能,確定整體設計方案。然后采用美國國家儀器公司(National Instruments,NI)的虛擬儀器技術,選用PXI模塊化硬件平臺和Lab VIEW2012圖形化軟件開發(fā)平臺實現(xiàn)系統(tǒng)的硬件和軟件設計,實現(xiàn)整個試驗過程和試驗數(shù)據(jù)處理的自動化。聲場測試平臺的設計方案為采用一發(fā)一收方式(或一發(fā)多收方式)對巖芯進行超聲波掃描,然后根據(jù)每個超聲波接收探頭檢測到的超聲波信號,計算超聲波在物理模型中的傳播速度以及衰減系數(shù),最終反演成像得到物理模型內(nèi)部的流體分布。設計方案中硬件設計主要包括超聲發(fā)生單元、超聲接收單元和中央控制單元的設計。軟件設計采用模塊化思想,分為初始化模塊、參數(shù)設置模塊、聲場測試模塊、歷史數(shù)據(jù)查看模塊等。通過硬件系統(tǒng)和軟件系統(tǒng)的結合,實現(xiàn)了聲場測試平臺的多模塊同步和高速數(shù)據(jù)采集、傳輸?shù)裙δ�。最后通過進行聲場測試前期試驗,確定聲場測試平臺裝置的最佳激勵信號的脈寬為換能器中心頻率對應周期的1/2的方波脈沖信號,為后期的巖芯聲場測試試驗提供實驗基礎。
[Abstract]:The high temperature and high pressure 3D physical simulation device is used to study the percolation law and macroscopic sweep mechanism of complex driving system in reservoir formation. It is one of the key contents to monitor the dynamic distribution of fluid in core in real time during displacement test. The purpose of this paper is to design and develop a sound field test platform for 3D cementing physical simulation device, and to monitor the dynamic distribution of each phase fluid in displacement test by ultrasonic transmission detection. Firstly, according to the requirements of the physical model device, the design indexes and main functions of the acoustic field test platform are defined, and the overall design scheme is determined. Then, using the virtual instrument technology of National Instruments Corporation (National), the hardware and software design of the system is realized by using the PXI modular hardware platform and the Lab VIEW2012 graphical software development platform, which realizes the automation of the whole experiment process and the test data processing. The design scheme of the sound field test platform is to scan the core with ultrasonic wave in one send and one receiving mode (or more than one transmission), and then according to the ultrasonic signal detected by each ultrasonic receiving probe, The velocity and attenuation coefficient of ultrasonic wave propagation in the physical model are calculated, and the fluid distribution inside the physical model is obtained by inversion imaging. The hardware design includes ultrasonic generating unit, ultrasonic receiving unit and central control unit. The software design adopts the idea of modularization, which is divided into initialization module, parameter setting module, sound field testing module, historical data viewing module and so on. Through the combination of hardware system and software system, the multi-module synchronization and high-speed data acquisition and transmission functions of the acoustic field test platform are realized. Finally, through the pre-test of sound field test, it is determined that the pulse width of the optimum excitation signal of the acoustic field test platform is 1 / 2 square wave pulse signal of the corresponding period of the transducer central frequency, which provides the experimental basis for the later core sound field test.
【學位授予單位】：中國石油大學(華東)
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：TE311;TB559
本文編號：2162992
[Abstract]:The high temperature and high pressure 3D physical simulation device is used to study the percolation law and macroscopic sweep mechanism of complex driving system in reservoir formation. It is one of the key contents to monitor the dynamic distribution of fluid in core in real time during displacement test. The purpose of this paper is to design and develop a sound field test platform for 3D cementing physical simulation device, and to monitor the dynamic distribution of each phase fluid in displacement test by ultrasonic transmission detection. Firstly, according to the requirements of the physical model device, the design indexes and main functions of the acoustic field test platform are defined, and the overall design scheme is determined. Then, using the virtual instrument technology of National Instruments Corporation (National), the hardware and software design of the system is realized by using the PXI modular hardware platform and the Lab VIEW2012 graphical software development platform, which realizes the automation of the whole experiment process and the test data processing. The design scheme of the sound field test platform is to scan the core with ultrasonic wave in one send and one receiving mode (or more than one transmission), and then according to the ultrasonic signal detected by each ultrasonic receiving probe, The velocity and attenuation coefficient of ultrasonic wave propagation in the physical model are calculated, and the fluid distribution inside the physical model is obtained by inversion imaging. The hardware design includes ultrasonic generating unit, ultrasonic receiving unit and central control unit. The software design adopts the idea of modularization, which is divided into initialization module, parameter setting module, sound field testing module, historical data viewing module and so on. Through the combination of hardware system and software system, the multi-module synchronization and high-speed data acquisition and transmission functions of the acoustic field test platform are realized. Finally, through the pre-test of sound field test, it is determined that the pulse width of the optimum excitation signal of the acoustic field test platform is 1 / 2 square wave pulse signal of the corresponding period of the transducer central frequency, which provides the experimental basis for the later core sound field test.
【學位授予單位】：中國石油大學(華東)
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：TE311;TB559
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相關碩士學位論文 前1條
1 劉卓;高溫高壓聲場測試平臺設計[D];中國石油大學(華東);2014年
，本文編號：2162992
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