發(fā)布時間：2019-05-11 00:26

【摘要】：旋轉導向鉆井技術是目前最具代表性的先進鉆井技術,旋轉導向鉆井系統(tǒng)中的姿態(tài)測量裝置對鉆頭鉆進過程中井斜角、方位角等參數(shù)進行測量,為鉆頭鉆進軌跡的精確控制提供基礎。為了研究姿態(tài)測量參數(shù)精度的提高方法,實驗中用測斜儀來模擬鉆井工具,使用高精度陀螺儀和三軸加速度計組合來測量姿態(tài)參數(shù)。由于傳感器輸出的信號很微弱,供電電源的紋波對測量精度有很大影響,雖然本身無紋波的電池能滿足實驗精度需求,但電池容量有限,無法進行長時間測量。所以高精度、低紋波、穩(wěn)定可靠的直流電源已成為姿態(tài)參數(shù)高精度測量研究中要解決的關鍵問題。論文從測斜儀姿態(tài)參數(shù)測量實驗對電源穩(wěn)定性、持續(xù)性和干擾等方面的需求出發(fā),根據(jù)紋波控制技術和電力電子技術基本理論,對直流電源的低紋波實現(xiàn)方法進行研究,完成了旋轉導向鉆井工具姿態(tài)測量實驗裝置的供電方案設計。設計電源采用電池作為核心來充分發(fā)揮電池的無紋波特性,并采用雙電池交替供電和充電結構來解決電池容量有限問題,同時利用線性電壓調(diào)整電路來消除開關切換時產(chǎn)生的諧波,從而實現(xiàn)電源的低紋波輸出。對設計的低紋波直流電源進行了實驗驗證,結果表明,設計的電源開關切換過程中輸出電壓無變化,可以實現(xiàn)長期、穩(wěn)定、低紋波的電壓輸出。與現(xiàn)有的電源相比,論文設計的電源具有結構簡單、輸出紋波低的優(yōu)勢。論文研究成果對提高測斜儀的測量精度有較重要意義。
[Abstract]:Rotating steering drilling technology is the most representative advanced drilling technology at present. The attitude measuring device in rotating steering drilling system measures the well inclination angle, azimuth angle and other parameters in the drilling process of bit. It provides the basis for precise control of drilling trajectory of drill bit. In order to study the method of improving the accuracy of attitude measurement parameters, the inclinometer is used to simulate the drilling tool, and the combination of high precision gyroscope and triaxial accelerometer is used to measure the attitude parameters. Because the signal output by the sensor is very weak, the ripples of the power supply have a great influence on the measurement accuracy. Although the battery without ripples can meet the requirements of experimental accuracy, the battery capacity is limited and can not be measured for a long time. Therefore, the high precision, low grain, stable and reliable DC power supply has become the key problem to be solved in the research of high precision measurement of attitude parameters. According to the demand of stability, persistence and interference of power supply in attitude parameter measurement experiment of inclinometer, according to the basic theory of wave control technology and power electronics technology, the realization method of low grain wave of DC power supply is studied in this paper. The power supply scheme design of the attitude measurement experimental device for rotary steering drilling tool is completed. The design power supply uses the battery as the core to give full play to the non-ripple characteristics of the battery, and adopts the dual battery alternating power supply and charging structure to solve the problem of limited battery capacity. At the same time, the linear voltage adjustment circuit is used to eliminate the harmonics produced when the switch is switched, so as to realize the low wave output of the power supply. The experimental results show that the output voltage has no change in the switching process of the designed power switch, and the long-term, stable and low-notch voltage output can be realized. Compared with the existing power supply, the power supply designed in this paper has the advantages of simple structure and low output ripples. The research results of this paper are of great significance to improve the measuring accuracy of the inclinometer.
【學位授予單位】：西安石油大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TE92;TN86

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