专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明公开

EP1505411A2 Method and apparatus for LWD shear velocity measurement 有权
标题翻译： VERFAHREN UND VORRICHTUNG ZUR LWD- MESSUNG DER SHEARGESCHWINDIGKEIT
公开(公告)号：EP1505411A2
公开(公告)日：2005-02-09
申请号：EP04024171.3
申请日：2001-11-13
申请人： BAKER HUGHES INCORPORATED
发明人： Tang, Xiao Ming , Patterson, Douglas , Wang, Tsili , Leggett, James V. III , Dubinsky, Vladimir
IPC分类号： G01V1/44 , G01V1/52 , G01V1/28
CPC分类号： G01V1/44
摘要： The logging tool (90) of this invention includes a transmitter (105) conveyed on a drilling collar for exciting a quadrupole signal (106) in a borehole being drilled by a drill bit and a receiver for receiving the signal. The transmitter is operated at a frequency below the cut-off frequency of the quadrupole collar mode. The received signal consists primarily of the formation quadrupole mode which, at low frequencies, has a velocity that approaches the formation shear velocity. The transmitter, in one embodiment, consists of eight equal sectors of a piezoelectric cylinder mounted on the rim of the drilling collar. The value of the cut- off frequency is primarily dependent on the thickness of the drilling collar. Alternatively, the transmitter may be operated to produce both the collar mode and the formation mode and a processor may be used to filter out the collar mode.
摘要翻译：本发明的测井工具（90）包括在钻铤上传送的发射器（105），用于激发由钻头钻的钻孔中的四极杆信号（106）和用于接收信号的接收器。发射机的工作频率低于四极杆模式的截止频率。所接收的信号主要由形成四极杆模式组成，其在低频时具有接近地层剪切速度的速度。在一个实施例中，发射器由安装在钻铤的边缘上的压电圆柱体的八个相等的部分组成。截止频率的值主要取决于钻铤的厚度。或者，发射机可以被操作以产生领带模式和形成模式，并且处理器可以用于过滤衣领模式。

2. 发明公开

EP1505411A3 Method and apparatus for LWD shear velocity measurement 有权
标题翻译：用于测量LWD Sheargeschwindigkeit方法和装置
公开(公告)号：EP1505411A3
公开(公告)日：2007-12-19
申请号：EP04024171.3
申请日：2001-11-13
申请人： Baker Hughes Incorporated
发明人： Tang, Xiao Ming , Patterson, Douglas , Wang, Tsili , Leggett, James V. III , Dubinsky, Vladimir
IPC分类号： G01V1/44 , G01V1/52 , G01V1/28
CPC分类号： G01V1/44
摘要： The logging tool (90) of this invention includes a transmitter (105) conveyed on a drilling collar for exciting a quadrupole signal (106) in a borehole being drilled by a drill bit and a receiver for receiving the signal. The transmitter is operated at a frequency below the cut-off frequency of the quadrupole collar mode. The received signal consists primarily of the formation quadrupole mode which, at low frequencies, has a velocity that approaches the formation shear velocity. The transmitter, in one embodiment, consists of eight equal sectors of a piezoelectric cylinder mounted on the rim of the drilling collar. The value of the cut- off frequency is primarily dependent on the thickness of the drilling collar. Alternatively, the transmitter may be operated to produce both the collar mode and the formation mode and a processor may be used to filter out the collar mode.

3. 发明授权

EP1505411B1 Method and apparatus for LWD shear velocity measurement 有权
标题翻译：方法和设备测量LWD SHEARGESCHWINDIGKEIT
公开(公告)号：EP1505411B1
公开(公告)日：2017-04-12
申请号：EP04024171.3
申请日：2001-11-13
申请人： Baker Hughes Incorporated
发明人： Tang, Xiao Ming , Patterson, Douglas , Wang, Tsili , Leggett, James V. III , Dubinsky, Vladimir
IPC分类号： G01V1/44 , G01V1/52 , G01V1/28
CPC分类号： G01V1/44

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式