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1. 发明申请

WO2009152416A3 METHOD AND SYSTEM FOR GENERATING A BEAM OF ACOUSTIC ENERGY FROM A BOREHOLE, AND APPLICATIONS THEREOF 审中-公开
标题翻译：用于从井眼产生声波能量的方法和系统及其应用
公开(公告)号：WO2009152416A3
公开(公告)日：2010-02-25
申请号：PCT/US2009047184
申请日：2009-06-12
申请人： CHEVRON USA INC , JOHNSON PAUL A , GUYER ROBERT , LE BAS PIERRE-YVES , VU CUNG , NIHEI KURT , SCHMITT DENIS P , SKELT CHRISTOPHER
发明人： JOHNSON PAUL A , GUYER ROBERT , LE BAS PIERRE-YVES , VU CUNG , NIHEI KURT , SCHMITT DENIS P , SKELT CHRISTOPHER
IPC分类号： G01V1/46
CPC分类号： G01V1/46
摘要： A compact array of transducers (110, 120) is employed as a downhole instrument for acoustic investigation of the surrounding rock formation. The array is operable to generate simultaneously a first acoustic beam signal (110) at a first frequency and a second acoustic beam signal (120) at a second frequency different than the first frequency. These two signals can be oriented through an azimuthal rotation of the array and an inclination rotation using control of the relative phases of the signals from the transmitter elements or electro-mechanical linkage. Due to the non-linearity of the formation (140), the first and the second acoustic beam signal (110, 120) mix into the rock formation where they combine into a collimated third signal (150) that propagates in the formation along the same direction than the first and second signals and has a frequency equal to the difference of the first and the second acoustic signals. The third signal is received either within the same borehole, after reflection, or another borehole, after transmission, and analyzed to determine information about rock formation.
摘要翻译：传感器（110,120）的小型阵列被用作用于周围岩层的声学研究的井下仪器。阵列可操作以同时产生第一频率的第一声波束信号（110）和以不同于第一频率的第二频率的第二声束信号（120）。这两个信号可以通过阵列的方位旋转和通过控制来自发射器元件或机电连杆的信号的相对相位的倾斜旋转来定向。由于地层（140）的非线性，第一和第二声波束信号（110,120）混合到岩层中，在那里它们组合成准直的第三信号（150），其沿着相同的方向在地层中传播方向比第一和第二信号，并且具有等于第一和第二声信号的差的频率。第三个信号在相同的钻孔，反射后或另一个钻孔中，在传输之后被接收并且被分析以确定关于岩层的信息。

2. 发明申请

WO2011152956A3 DEVICE AND METHOD FOR GENERATING A COLLIMATED BEAM OF ACOUSTIC ENERGY IN A BOREHOLE 审中-公开
标题翻译：用于产生孔中的声学能量的装置和方法
公开(公告)号：WO2011152956A3
公开(公告)日：2012-02-23
申请号：PCT/US2011035595
申请日：2011-05-06
申请人： CHEVRON USA INC , LOS ALAMOS NAT SECURITY LLC , VU CUNG KHAC , SINHA DIPEN N , PANTEA CRISTIAN , NIHEI KURT T , SCHMITT DENIS P , SKELT CHRISTOPHER
发明人： VU CUNG KHAC , SINHA DIPEN N , PANTEA CRISTIAN , NIHEI KURT T , SCHMITT DENIS P , SKELT CHRISTOPHER
IPC分类号： G01V1/42 , G01V1/46
CPC分类号： G01V1/00 , G01V1/006 , G01V1/46
摘要： In some aspects of the invention, a method of generating a beam of acoustic energy in a borehole is disclosed. The method includes generating a first acoustic wave at a first frequency; generating a second acoustic wave at a second frequency different than the first frequency, wherein the first acoustic wave and second acoustic wave are generated by at least one transducer carried by a tool located within the borehole; transmitting the first and the second acoustic waves into an acoustically non-linear medium, wherein the composition of the non-linear medium produces a collimated beam by a non-linear mixing of the first and second acoustic waves, wherein the collimated beam has a frequency based upon a difference between the first frequency and the second frequency; and transmitting the collimated beam through a diverging acoustic lens to compensate for a refractive effect caused by the curvature of the borehole.
摘要翻译：在本发明的一些方面，公开了一种在钻孔中产生声能束的方法。该方法包括以第一频率产生第一声波; 在不同于所述第一频率的第二频率处产生第二声波，其中所述第一声波和第二声波由位于所述钻孔内的工具承载的至少一个换能器产生; 将第一和第二声波传输到声学非线性介质中，其中非线性介质的组成通过第一和第二声波的非线性混合产生准直波束，其中准直波束具有频率基于所述第一频率和所述第二频率之间的差; 并且通过发散的声透镜发送准直光束以补偿由钻孔的曲率引起的折射效应。

3. 发明申请

WO2011152954A3 DEVICE AND METHOD FOR GENERATING A COLLIMATED BEAM OF ACOUSTIC ENERGY IN A BOREHOLE 审中-公开
标题翻译：用于产生孔中的声学能量的装置和方法
公开(公告)号：WO2011152954A3
公开(公告)日：2012-02-23
申请号：PCT/US2011035358
申请日：2011-05-05
申请人： CHEVRON USA INC , LOS ALAMOS NAT SECURITY LLC , VU CUNG KHAC , SINHA DIPEN N , PANTEA CRISTIAN , NIHEI KURT T , SCHMITT DENIS P , SKELT CHRISTOPHER
发明人： VU CUNG KHAC , SINHA DIPEN N , PANTEA CRISTIAN , NIHEI KURT T , SCHMITT DENIS P , SKELT CHRISTOPHER
IPC分类号： G01V1/46
CPC分类号： G01V1/00 , G01V1/006 , G01V1/46
摘要： In some aspects of the invention, a method of generating a beam of acoustic energy in a borehole is disclosed. The method includes generating a first acoustic wave at a first frequency; generating a second acoustic wave at a second frequency different than the first frequency, wherein the first acoustic wave and second acoustic wave are generated by at least one transducer carried by a tool located within the borehole; transmitting the first and the second acoustic waves into an acoustically non-linear medium, wherein the composition of the non-linear medium produces a collimated beam by a non-linear mixing of the first and second acoustic waves, wherein the collimated beam has a frequency based upon a difference between the first frequency range and the second frequency, and wherein the non-linear medium has a velocity of sound between 100 m/s and 800 m/s.
摘要翻译：在本发明的一些方面，公开了一种在钻孔中产生声能束的方法。该方法包括以第一频率产生第一声波; 在不同于所述第一频率的第二频率处产生第二声波，其中所述第一声波和第二声波由位于所述钻孔内的工具承载的至少一个换能器产生; 将第一和第二声波传输到声学非线性介质中，其中非线性介质的组成通过第一和第二声波的非线性混合产生准直波束，其中准直波束具有频率基于所述第一频率范围和所述第二频率之间的差异，并且其中所述非线性介质具有在100m / s至800m / s之间的声速。

4. 发明申请

WO2011152957A3 DEVICE AND METHOD FOR GENERATING A COLLIMATED BEAM OF ACOUSTIC ENERGY IN A BOREHOLE 审中-公开
标题翻译：在井眼中产生聚合能量的束缚的装置和方法
公开(公告)号：WO2011152957A3
公开(公告)日：2012-02-02
申请号：PCT/US2011035608
申请日：2011-05-06
申请人： CHEVRON USA INC , LOS ALAMOS NAT SECURITY LLC , VU CUNG KHAC , SINHA DIPEN N , PANTEA CRISTIAN , NIHEI KURT T , SCHMITT DENIS P , SKELT CHRISTOPHER
发明人： VU CUNG KHAC , SINHA DIPEN N , PANTEA CRISTIAN , NIHEI KURT T , SCHMITT DENIS P , SKELT CHRISTOPHER
IPC分类号： G01V1/04 , G01V1/40 , G01V1/46
CPC分类号： G01V1/46
摘要： In some aspects of the invention, a method of generating a beam of acoustic energy in a borehole is disclosed. The method includes generating a first broad-band acoustic pulse at a first broad-band frequency range having a first central frequency and a first bandwidth spread; generating a second broad-band acoustic pulse at a second broad-band frequency range different than the first frequency range having a second central frequency and a second bandwidth spread, wherein the first acoustic pulse and second acoustic pulse are generated by at least one transducer arranged on a tool located within the borehole; and transmitting the first and the second broad-band acoustic pulses into an acoustically non-linear medium, wherein the composition of the non-linear medium produces a collimated pulse by a non-linear mixing of the first and second acoustic pulses, wherein the collimated pulse has a frequency equal to the difference in frequencies between the first central frequency and the second central frequency and a bandwidth spread equal to the sum of the first bandwidth spread and the second bandwidth spread.
摘要翻译：在本发明的一些方面，公开了一种在钻孔中产生声能束的方法。该方法包括在具有第一中心频率和第一带宽扩展的第一宽带频率范围内产生第一宽带声波脉冲; 在与具有第二中心频率和第二带宽扩展的第一频率范围不同的第二宽带频率范围处产生第二宽带声波脉冲，其中第一声脉冲和第二声脉冲由至少一个换能器布置位于钻孔内的工具上; 以及将所述第一和第二宽带声脉冲发射到声学非线性介质中，其中所述非线性介质的组成通过所述第一和第二声学脉冲的非线性混合产生准直脉冲，其中所述准直脉冲的频率等于第一中心频率和第二中心频率之间的频率差，以及等于第一带宽扩展和第二带宽扩展之和的带宽扩展。

5. 发明申请

WO2011075280A3 WORKFLOW FOR PETROPHYSICAL AND GEOPHYSICAL FORMATION EVALUATION OF WIRELINE AND LWD LOG DATA 审中-公开
标题翻译： WIRELINE和LWD日志数据的物理和地球物理形态评估的工作流程
公开(公告)号：WO2011075280A3
公开(公告)日：2011-09-22
申请号：PCT/US2010057420
申请日：2010-11-19
申请人： CHEVRON USA INC , SKELT CHRISTOPHER
发明人： SKELT CHRISTOPHER
IPC分类号： G01V1/30 , E21B47/00 , G01V1/28 , G06F19/00
CPC分类号： G01V99/00
摘要： A computer-implemented method of characterizing elastic properties of a subsurface formation at various fluid saturation conditions is disclosed. The method includes the features of estimating densities and bulk moduli of fluids and surrounding rock matrix material present in an invaded zone around a wellbore and beyond the invaded zone to record a set of log curves of density and bulk modulus of the fluids and the surrounding rock matrix material present in the invaded zones and beyond the invaded zone versus depth; recording a set of shale trend compaction curves in each wellbore; solving a set of response equations for rock and fluid volumes based on the recorded set of log curves and shale trend compaction curves to compute lithology, porosity and hydrocarbon saturation to build computer models to estimate hydrocarbon saturation for the rock matrix material penetrated in the wellbore; and using the estimated densities and the bulk moduli of the fluids and the rock matrix material near the wellbore, the shale trend compaction curves and the computed lithology, porosity and hydrocarbon saturation near the wellbore to characterize elastic properties of a subsurface formation at various fluid saturation conditions.
摘要翻译：公开了一种在各种液体饱和条件下表征地下地层的弹性特性的计算机实现方法。该方法包括估计流体和周围岩石基质材料的密度和体积模量的特征，存在于井筒周围的入侵区域和侵入区域之外，以记录流体和周围岩石的密度和体积弹性模量的对数曲线存在于入侵区域以外的基质材料超出入侵区域与深度之间; 在每个井眼中记录一组页岩趋势压实曲线; 基于记录的对数曲线和页岩趋势压实曲线，求解岩石和流体体积的一组响应方程，以计算岩性，孔隙度和碳氢化合物饱和度，构建计算机模型，以估计渗透在井眼中的岩石基质材料的烃饱和度; 并利用井眼附近的流体和岩石基质材料的估计密度和体积模量，井眼趋势压实曲线和井眼附近计算的岩性，孔隙度和烃饱和度，以表征在各种流体饱和度下地下地层的弹性性质条件。

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