专利详细信息

油井动液面深度检测方法及装置

文献类型：专利

专利类型：发明专利

是否失效：否

是否授权：否

申请号：CN201310255054.8

申请日：20130625

发明人：周伟贾威李太福郭小渝廖志强姚立忠

申请人：重庆科技学院

申请人地址：400023 重庆市沙坪坝区大学城东路20号

公开日：20160420

公开号：CN103321633B

代理人：余锦曦

代理机构：50216 重庆为信知识产权代理事务所(普通合伙)

语　　种：中文

摘　　要：本发明涉及油井采油技术领域，特别涉及一种油井动液面深度检测方法及装置,一种油井动液面深度检测方法其步骤包括：a、通过井口处声源驱动模块发出有限带宽的白噪声，并将信号传入油井内；b、通过信号接收模块在油井口接收经油井动液面反射后的白噪声信号，并进行A/D转换成声音数字信号；c、将接收到的声音数字信号送入信号分析模块，信号分析模块通过声场的幅值信号时域与频域分布获得共振频率，从而计算出油井动液面深度。本发明的有益效果之一是：可有效避免温度、湿度、压力以及泡沫等因素造成的检测误差，同时，其操作工艺简便，计算精确，测量时间短，能有效地提高油井动液面的检测精度。

主权项：1.一种油井动液面深度检测方法，其特征在于：其步骤包括：a、通过井口处声源驱动模块发出有限带宽的白噪声，并将信号传入油井内；b、通过信号接收模块在油井口接收经油井动液面反射后的白噪声信号，并进行A/D转换成声音数字信号；c、将接收到的声音数字信号送入信号分析模块，信号分析模块通过声场的幅值信号时域与频域分布获得共振频率，从而计算出油井动液面深度，具体步骤如下：进行频谱分析，得出油井内空气柱声场的幅值信号时域与频域分布；通过声场的幅值信号时域与频域分布获得共振频率，从而计算出油井动液面深度；所述进行频谱分析，得出油井内空气柱声场的幅值信号时域与频域分布包括：按公式计算声场的幅值信号时域分布；按公式计算声场的幅值信号频域分布；其中,t为时间,f(t)为信号幅值，ω为信号角频率,e为自然对数的底，j为虚数单位,F(ω)为函数f(t)的频谱密度函数，描述了f(t)的频率结构；所述通过声场的幅值信号时域与频域分布获得共振频率，从而计算出油井动液面深度包括：按公式 $<math> <mrow> <msub> <mi>l</mi> <mi>p</mi> </msub> <mo>=</mo> <mfrac> <mrow> <mo>(</mo> <mn>2</mn> <mi>n</mi> <mo>-</mo> <mn>1</mn> <mo>)</mo> <mi>c</mi> </mrow> <mrow> <mn>4</mn> <msub> <mi>f</mi> <mi>n</mi> </msub> </mrow> </mfrac> <mo>,</mo> <mi>n</mi> <mo>=</mo> <mn>1</mn> <mo>,</mo> <mn>2</mn> <mo>,</mo> <mn>3</mn> <mo>,</mo> </p><p class='subject'><strong>关键词：</strong>油井动液面深度检测方法数字信号 <b class='type_ico_id'></b>油井一种信号分析模块白噪声信号油井动液面 <b class='type_ico_id'></b>操作工艺测量时间分析模块幅值信号共振频率检测精度检测误差接收模块频域分布驱动模块送入信号信号传入 <b class='type_ico_id'></b>油井采油有限带宽接收 <b class='type_ico_id'></b>白噪声油井口计算声场声源时域反射 <b class='type_ico_id'></b>井口湿度简便涉及精确有效发出进行 </p><p class='class'><strong>IPC专利分类号：</strong>E21B47/047(20120101)</p>
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