CN201241698Y - 随钻声波单极子换能器 - Google Patents

随钻声波单极子换能器 Download PDF

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Publication number
CN201241698Y
CN201241698Y CNU2008201087271U CN200820108727U CN201241698Y CN 201241698 Y CN201241698 Y CN 201241698Y CN U2008201087271 U CNU2008201087271 U CN U2008201087271U CN 200820108727 U CN200820108727 U CN 200820108727U CN 201241698 Y CN201241698 Y CN 201241698Y
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transducer
extensibility
ceramic bars
conduction
sound wave
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李玉霞
王国平
贾向东
李文东
李亚敏
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China National Petroleum Corp
China Petroleum Logging Co Ltd
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China National Petroleum Corp
China Petroleum Logging Co Ltd
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Abstract

本实用新型涉及一种石油地质勘探和金属矿藏勘测的测井仪器随钻声波单极子换能器,它由两层具有延展性不导电的非金属材料和陶瓷条构成,多个陶瓷条均匀分布在两层具有延展性不导电的非金属材料之间,将每个陶瓷条相同一面焊接串连在一起,构成两个电极,引出电极引线,将加工好的中间夹有陶瓷条的具有延展性不导电的非金属材料用胶固定在钻梃的相应位置,首尾相连,中间不能留空隙,最后缠绕加有应力的玻璃丝带,此换能器满足在高温175℃,140MPa环境条件下工作;频率15KHz左右,具有扩展功能,可以作为发射和接收换能器使用,使用此种换能器的随钻声波测井仪器可在随钻条件下测量地层声波信息。

Description

随钻声波单极子换能器
技术领域
本实用新型涉及一种石油地质勘探和金属矿藏勘测的测井仪器随钻声波单极子换能器。
背景技术
近年来,国内、外开始大量进行大斜度井、水平井的油气勘探与开发,受其带动随钻测井正发挥着越来越重要的作用,而且有替代电缆测井的趋势。目前,海上随钻测井的比例高达95%以上,每年随钻测井服务的产值已经占整个测井行业产值的25%以上。
作为关键技术之一的随钻声波测井在钻井工程和油气勘探等方面具有以下几点明显优势:第一,随钻声波测井与地震结合,是目前及时预测钻前地层压力和评价井壁稳定性的一种非常有前景的技术;第二,深水水域勘探,随钻声波测井是获得用于地震资料时深转换和弹性波阻抗反演等的地层纵、横波速度的唯一途径;第三,油气评价和地质导向方面,与随钻中子和密度测井相比,随钻声波测井测量地层孔隙度具有安全、环保的优势。
实用新型内容
本发明的目的是:设计一种具有对称声源的适宜高温高压,高抗振动条件的随钻声波单极子换能器。
随钻声波单极子换能器,它由两层具有延展性不导电的非金属材料和陶瓷条构成,多个陶瓷条均匀分布在两层具有延展性不导电的非金属材料之间,将每个陶瓷条相同一面焊接串连在一起,构成两个电极,引出电极引线,将加工好的中间夹有陶瓷条的具有延展性不导电的非金属材料用胶固定在钻铤的相应位置,首尾相连,中间不留空隙,最后缠绕加有应力的玻璃丝带。
根据单极子换能器的振动原理,即单极子换能器的声源是对称声源,即单极子源。单极子源一般是圆管型的换能器以轴对称方式沿径向振动(膨胀或缩小)。单极子声源在井孔中激发起以地层纵波为首波、包括横波、伪Rayleigh波和Stoneley波的全波列,它的优点:最容易实现的,最经济、最可靠,应用最广泛的换能器。
此发明满足在高温175℃,140MPa环境条件下;频率15KHz左右。此换能器具有扩展功能,可以作为发射和接收换能器使用,使用此种换能器的随钻声波测井仪器可测量地层声波信息。
附图说明
图1是随钻声波单极子换能器结构示意图。
图2是随钻声波单极子换能器安装示意图。
其中:1、非金属材料  2、陶瓷条  3、非金属材料  4、钻铤5、钻铤
具体实施方式
下面根据附图对本实用新型所述的随钻声波单极子换能器结构加以说明。
随钻声波单极子换能器,它由两层具有延展性不导电的非金属材料1、3和陶瓷条2构成,多个陶瓷条均匀分布在两层具有延展性不导电的非金属材料之间,将每个陶瓷条相同一面焊接串连在一起,构成两个电极,引出电极引线,将加工好的中间夹有陶瓷条的具有延展性不导电的非金属材料用胶固定在钻铤4、5的相应位置,首尾相连,中间不能留空隙,最后缠绕加有应力的玻璃丝带。

Claims (1)

1.一种用于随钻条件的声波单极子换能器,其特征在于:它由两层具有延展性不导电的非金属材料和陶瓷条构成,多个陶瓷条均匀分布在两层具有延展性不导电的非金属材料之间,将每个陶瓷条相同一面焊接串连在一起,构成两个电极,引出电极引线,将加工好的中间夹有陶瓷条的具有延展性不导电的非金属材料用胶固定在钻铤的相应位置,首尾相连,中间不能留空隙,最后缠绕加有应力的玻璃丝带。
CNU2008201087271U 2008-06-19 2008-06-19 随钻声波单极子换能器 Expired - Lifetime CN201241698Y (zh)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102877827A (zh) * 2012-10-10 2013-01-16 中国石油天然气集团公司 一种随钻声波测井的声系模块
CN102900425A (zh) * 2012-10-29 2013-01-30 中国石油大学(华东) 一种新的页岩气井压裂裂缝监测方法

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102877827A (zh) * 2012-10-10 2013-01-16 中国石油天然气集团公司 一种随钻声波测井的声系模块
CN102877827B (zh) * 2012-10-10 2015-03-11 中国石油天然气集团公司 一种随钻声波测井的声系模块
CN102900425A (zh) * 2012-10-29 2013-01-30 中国石油大学(华东) 一种新的页岩气井压裂裂缝监测方法

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