【摘要】：隨鉆測井是一種新興的正處于不斷發(fā)展中的測井技術(shù),而CAN總線通信技術(shù)在工業(yè)現(xiàn)場的應(yīng)用也日益廣泛。目前,隨鉆測井技術(shù)在新型油、氣鉆井工程中的應(yīng)用具有廣泛的推廣價(jià)值。使用CAN總線構(gòu)建隨鉆測井系統(tǒng),對于助推我國隨鉆測井技術(shù),油、氣鉆井產(chǎn)業(yè)的發(fā)展與進(jìn)步,具有廣闊的市場需求和應(yīng)用前景。本項(xiàng)目主要研究隨鉆測井技術(shù),首次將隨鉆測井技術(shù)和CAN總線通信技術(shù)引入智能鉆井、測井系統(tǒng),并分析它和普通鉆井、測井技術(shù)及其通信方式的對比優(yōu)勢,本文重點(diǎn)研究隨鉆測井系統(tǒng),以使其適合在隨鉆測量條件下使用,解決了遠(yuǎn)距離數(shù)據(jù)傳輸?shù)臏?zhǔn)確性和測量近鉆頭性等技術(shù)問題。此項(xiàng)目研究了隨鉆測量中特征參數(shù)的自動(dòng)檢測方案,基于隨鉆測井原理,設(shè)計(jì)隨鉆測井的系統(tǒng)方案及其CAN總線通信方案,實(shí)現(xiàn)近鉆頭的數(shù)據(jù)采集和遠(yuǎn)距離的實(shí)時(shí)通信[1],旨在提高系統(tǒng)的數(shù)據(jù)傳輸速率、可靠性和降低生產(chǎn)制造成本等。本課題來源于四川省科技廳,通過選用AT90CAN32單片機(jī)為核心控制器,設(shè)計(jì)了一個(gè)多路數(shù)據(jù)采集處理系統(tǒng)。通過某些芯片自身集成的溫度傳感器對井內(nèi)溫度進(jìn)行采集,經(jīng)由三軸加速度傳感器和三軸磁阻傳感器對近鉆頭位置及狀態(tài)進(jìn)行重力和磁場上的確定,利用閃爍計(jì)數(shù)器對γ射線強(qiáng)度進(jìn)行計(jì)數(shù),采取感應(yīng)測井對井內(nèi)電導(dǎo)率進(jìn)行記錄。最后將測得的各種參數(shù)進(jìn)行報(bào)文封裝,并通過CAN總線發(fā)送到地面上位機(jī),再由地面上位機(jī)根據(jù)各個(gè)參數(shù)以及鉆井深度等予以綜合判斷,正確指導(dǎo)鉆進(jìn)。本文分別對系統(tǒng)的通信功能和通信可靠性進(jìn)行了測試,對通信功能的測試包括發(fā)送數(shù)據(jù)測試與接收數(shù)據(jù)測試。測試結(jié)果表明,系統(tǒng)能成功地進(jìn)行標(biāo)準(zhǔn)數(shù)據(jù)幀的發(fā)送與接收。從報(bào)文時(shí)間間隔測試、通信距離測試和通信速率測試三個(gè)方面對通信可靠性進(jìn)行了測試;由實(shí)驗(yàn)結(jié)果可知,對于滿足實(shí)際需求,系統(tǒng)的通信是可靠的。除此之外,還對系統(tǒng)傳感器模塊的功能進(jìn)行了測試,系統(tǒng)基本能夠達(dá)到預(yù)期的設(shè)計(jì)目標(biāo),對實(shí)際鉆井工程有實(shí)際且重要的指導(dǎo)意義。
[Abstract]:Logging while drilling is a new and developing logging technology, and CAN bus communication technology is widely used in industrial field. At present, the application of logging while drilling technology in new oil and gas drilling engineering has extensive popularization value. The use of CAN bus to construct the logging system while drilling has broad market demand and application prospect for promoting the development and progress of drilling while drilling technology, oil and gas drilling industry in China. This project mainly studies logging while drilling technology, introduces the technology of logging while drilling and CAN bus communication technology into intelligent drilling and logging system for the first time, and analyzes its comparative advantages with conventional drilling, logging technology and its communication mode. This paper focuses on the research of the logging system while drilling in order to make it suitable for use in the condition of measurement while drilling and solve the technical problems such as the accuracy of long-distance data transmission and the measurement of near-drill bit. Based on the principle of logging while drilling, the system scheme of logging while drilling and the communication scheme of CAN bus are designed. In order to improve the data transmission rate, reliability and reduce the manufacturing cost of the system, the data acquisition and remote real-time communication of the near bit are realized. This subject comes from the science and technology department of Sichuan province. By selecting AT90CAN32 single chip computer as the core controller, a multi-channel data acquisition and processing system is designed. The temperature in the well is collected by the temperature sensor integrated by some chips, and the position and state of the bit are determined by the three-axis acceleration sensor and the three-axis magnetoresistive sensor. The intensity of 緯-ray was counted by scintillation counter and the electrical conductivity was recorded by induction logging. Finally, the measured parameters are encapsulated and sent to the ground host computer by CAN bus. Then the surface host computer synthetically judges the parameters and drilling depth to guide drilling correctly. In this paper, the communication function and communication reliability of the system are tested respectively. The test of communication function includes sending data test and receiving data testing. The test results show that the system can transmit and receive standard data frames successfully. The reliability of the communication is tested from three aspects: the time interval test, the communication distance test and the communication rate test. The experimental results show that the communication of the system is reliable to meet the actual requirements. In addition, the function of the sensor module of the system is tested, and the system can basically achieve the expected design goal, which has practical and important guiding significance to the actual drilling engineering.
【學(xué)位授予單位】：電子科技大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：P631.81;TP273

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