随钻测量中工具面角的模拟解算  

Analog solving of tool-face angle for measurement while drilling

作　　者：周云凤[1] 程为彬[1] 陈世琳[1,2] 

机构地区：[1]西安石油大学电子工程学院,陕西西安710065 [2]青海油田采油三厂,青海茫崖816400

出　　处：《中国测试》2010年第3期15-18,共4页China Measurement & Test

基　　金：陕西省自然科学基金项目(SJ08E216);中国石油天然气集团公司中青年创新基金(07E1014)

摘　　要：针对井眼轨迹的测量问题,根据测量仪器的输出信号与钻具姿态信息存在一定的三角函数关系,提出了一种工具面角模拟解算方法。分析了工具面角数字计算方法及其误差,基于模拟函数发生器构造了一种新颖的反正切函数求解电路,可以直接获取工具面角。对不同井斜角和工具面角的情况下进行了试验测试,数据分析表明,该方法可行,并具有较高的精度,可用于快速的姿态参数解算。In order to solve the problem of measuring the well trajectory,an analog-solving method of tool-face angle was proposed according to the trigonometric function relationship between the output signal of measuring instruments and the attitude information of drilling tool. With the method,the digital calculation method of tool-face angle and the measurement errors were analyzed. Based on the analog function generator,a novel solving circuit of arctangent function was constructed,by which the tool-face angle can be directly accessed. Experimental testing data showed that the method is applicable for different well-inclination and tool-face angle with high-precision, thus it can be used for rapid estimation of gesture parameter.

关 键 词：随钻测量 工具面角 模拟解算 加速度计 井眼轨迹 

分 类 号：TE258.3[石油与天然气工程—油气井工程] TP274.2[自动化与计算机技术—检测技术与自动化装置]