| 井径仪器改进后的误差分析 |
| |
| 引用本文： | 吴兴方,朱江梅.井径仪器改进后的误差分析[J].测井技术,2006,30(3):263-266. |
| |
| 作者姓名： | 吴兴方 朱江梅 |
| |
| 作者单位： | 中海油田服务股份有限公司油技事业部,广东,湛江524057;中海油基地集团采技服特普公司,广东,湛江,524057 |
| |
| 摘 要： | 经过改进的三臂井径测井仪器用3条臂的电位器串联来响应井眼内径的变化.通过建立数学模型,用计算机模拟井眼的变化和仪器在井眼中不同偏心程度的各种情况,经过详细分析,得出所测得的井径值小于等于井眼的实际内径,引入了负系统误差;误差大小与仪器的居中程度相关.基于分析结果提出了降低误差的有效措施,并指出要克服系统误差,需同时分别采集3条臂的井径信号.
|
| 关 键 词： | 测井仪器 井径仪 数学模型 计算机辅助分析 系统误差 措施 |
| 文章编号： | 1004-1338(2006)03-0263-04 |
| 收稿时间： | 2006-03-16 |
| 修稿时间： | 2006年3月16日 |
Error Analyses of Modified Caliper Tool |
| |
| WU Xing-fang,ZHU Jiang-mei.Error Analyses of Modified Caliper Tool[J].Well Logging Technology,2006,30(3):263-266. |
| |
| Authors: | WU Xing-fang ZHU Jiang-mei |
| |
| Affiliation: | 1. Well-tech Division, China Offshore Oilfield Service Group LTD. , Zhanjiang, Guangdong 524057, China; 2. Data Pro-tech Corporation LTD. , China Offshore Petroleum Base, Zhanjiang, Guangdong 524057, China |
| |
| Abstract: | The modified logging tool with 3-arm caliper responds to changes of hole inner diameter by serial potentiometers. On the basis of a mathematics model of this system, simulated are changes of downhole and the varying decentrations by computer programs. Analyses show that caliper measured is less than or equal to the actual value of the well. This measuring method causes negative system error, which is interrelated with the decentration of 4209XA. Based on analysed result, proposed is a method for reducing the error. The proposed method is able to acquire three caliper signals simultaneously. |
| |
| Keywords: | log tool caliper mathematic model computer assistant analyse system error measure |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
