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1. 发明公开

EP2488722A4 ESTIMATING FORMATION STRESSES USING RADIAL PROFILES OF THREE SHEAR MODULI 审中-公开
公开(公告)号：EP2488722A4
公开(公告)日：2017-11-08
申请号：EP09847452
申请日：2009-07-20
申请人： SERVICES PÉTROLIERS SCHLUMBERGER , SCHLUMBERGER HOLDINGS LTD (SHL) , SCHLUMBERGER TECHNOLOGY BV , PRAD RES & DEV LTD
发明人： SINHA BIKASH K
IPC分类号： E21B47/06 , G01V1/40
CPC分类号： E21B49/006 , G01V1/50
摘要： Maximum and minimum horizontal stresses, and horizontal to overburden stress ratio, are estimated using radial profiles of shear moduli. Inversion enables estimation of maximum and minimum horizontal stresses using radial profiles of three shear moduli associated with an orthogonal set of axes defined by the three principal stress directions. Differences in the far- field shear moduli are inverted together with two difference equations obtained from the radial profiles of the dipole shear moduli C44 and C55, and borehole stresses in the near-wellbore region. The horizontal to overburden stress ratio is estimated using differences in the compressional, dipole shear, and Stoneley shear slownesses at two depths in the same lithology interval where the formation exhibits azimuthal isotropy in cross-dipole dispersions, implying that horizontal stresses are nearly the same at all azimuths. The overburden to horizontal stress ratio in a formation with axial heterogeneity may also be estimated using the far-field Stoneley shear modulus C66 and dipole shear modulus C55 together with the radial variation of the dipole shear modulus C55 caused by near-wellbore stress concentrations.

2. 发明申请

WO2012087796A3 HYDRAULIC FRACTURE CHARACTERIZATION USING BOREHOLE SONIC DATA 审中-公开
标题翻译：液压破碎特性使用孔洞数据
公开(公告)号：WO2012087796A3
公开(公告)日：2013-05-10
申请号：PCT/US2011065404
申请日：2011-12-16
申请人： SCHLUMBERGER CA LTD , SCHLUMBERGER SERVICES PETROL , SCHLUMBERGER HOLDINGS , SCHLUMBERGER TECHNOLOGY BV , PRAD RES & DEV LTD , SINHA BIKASH K
发明人： SINHA BIKASH K
IPC分类号： G01V1/50
CPC分类号： G01V1/306 , E21B43/26 , G01V1/284 , G01V1/50 , G01V2210/6242 , G01V2210/646
摘要： A method and apparatus for assessing induced fractures in a subterranean formation including acquiring sonic data before and after a hydraulic fracturing operation, calculating a shear modulus in the borehole cross-sectional plane from Stoneley data, and calculating two shear moduli in two borehole orthogonal axial planes from cross dipole data. A method and apparatus for assessing induced fractures in a subterranean formation including collecting sonic data before and after fracturing the formation, calculating a far-field shear modulus in the borehole cross-sectional plane and a far-field shear moduli in the two orthogonal borehole axial planes, inferring the open or closed status of a fracture, and estimating a radial width or height or both of a vertical fracture.
摘要翻译：一种用于评估地下构造中的诱发裂缝的方法和装置，包括在水力压裂操作之前和之后获取声波数据，从Stoneley数据计算钻孔横截面中的剪切模量，并计算两个钻孔正交轴向平面中的两个剪切模量来自交叉偶极数据。一种用于评估地下构造中的诱发断裂的方法和装置，包括在压裂地层之前和之后收集声波数据，计算井眼横截面中的远场剪切模量和两个正交钻孔轴向中的远场剪切模量推断断层的开放或关闭状态，以及估计径向宽度或高度或两者的垂直断裂。

3. 发明申请

WO2009055196A3 IN-SITU DETERMINATION OF YIELD STRESS STATE OF EARTH FORMATIONS 审中-公开
标题翻译：地面应力状态的现场测定
公开(公告)号：WO2009055196A3
公开(公告)日：2010-06-10
申请号：PCT/US2008077952
申请日：2008-09-26
申请人： SCHLUMBERGER SERVICES PETROL , SCHLUMBERGER CA LTD , SCHLUMBERGER HOLDINGS , SCHLUMBERGER TECHNOLOGY BV , PRAD RES & DEV LTD , SINHA BIKASH K
发明人： SINHA BIKASH K
IPC分类号： E21B49/00 , G01V1/50
CPC分类号： E21B49/006 , G01V1/50
摘要： Determination of in-situ rock yield stress state of a geological formation (120) surrounding a borehole (122) includes determining a profile for each of an axial effective, a radial effective, and a hoop effective stress within at least one axial plane containing a borehole axis (112). A predicted radial shear response radial profile is calculated from the effective stresses within the at least one axial plane. A measurement-based estimate of a shear response radial profile within the at least one axial plane is determined from measured data. A maximum radial distance at which a difference between the predicted and measurement-based shear response radial profiles is identified within the at least one axial plane as being greater than a difference threshold. The respective axial, radial, and hoop stresses, are determined at the identified maximum radial distance. The identified stresses are indicative of an in-situ yield stress state of the rock (120).
摘要翻译：确定围绕钻孔（122）的地质构造（120）的原位岩石屈服应力状态包括确定在至少一个轴向平面内的轴向有效，径向有效和环有效应力中的每一个的轮廓，井眼轴线（112）。从至少一个轴向平面内的有效应力计算预测的径向剪切响应径向轮廓。根据测量数据确定至少一个轴向平面内的剪切响应径向轮廓的基于测量的估计。在所述至少一个轴向平面内识别所述预测和基于测量的剪切响应径向轮廓之间的差异大于差异阈值的最大径向距离。在所识别的最大径向距离处确定相应的轴向，径向和环向应力。所识别的应力指示岩石的原位屈服应力状态（120）。

4. 发明申请

WO2009126774A3 AUTOMATED MUD SLOWNESS ESTIMATION 审中-公开
标题翻译：自动化MUD SLOWNESS估算
公开(公告)号：WO2009126774A3
公开(公告)日：2010-01-28
申请号：PCT/US2009040014
申请日：2009-04-09
申请人： SCHLUMBERGER SERVICES PETROL , SCHLUMBERGER CA LTD , SCHLUMBERGER HOLDINGS , SCHLUMBERGER TECHNOLOGY BV , PRAD RES & DEV LTD , VALERO HENRI-PIERRE , DJIKPESSE HUGUES A , SINHA BIKASH K
发明人： VALERO HENRI-PIERRE , DJIKPESSE HUGUES A , SINHA BIKASH K
IPC分类号： G01V3/18 , E21B21/08 , E21B47/00 , G01V1/28 , G01V3/00
CPC分类号： G01V1/50
摘要： An integrated framework is described for automating some or all of mud slowness estimation for both fast and slow formations. An estimation of fluid slowness based on monopole radial profiling is calculated if conditions permit. Alternatively, an estimation of fluid slowness based on Scholte wave slowness is estimated if conditions do not permit calculation based on monopole radial profiling. Tool standoff may also be estimated based on monopole radial profiling.
摘要翻译：描述了一个综合框架，用于自动化快速和慢速地层的部分或全部泥浆慢度估计。如果条件允许，则计算基于单极径向剖面的流体缓慢的估计。或者，如果条件不允许基于单极径向剖面的计算，则估计基于Scholte波慢度的流体慢度的估计。也可以基于单极径向轮廓来估计刀具对位。

5. 发明专利

BRPI0807875A2 未知
公开(公告)号：BRPI0807875A2
公开(公告)日：2014-06-17
申请号：BRPI0807875
申请日：2008-09-26
申请人： PRAD RES & DEV LTD
发明人： SINHA BIKASH K
IPC分类号： E21B49/00 , G01V1/50
摘要： Determination of in-situ rock yield stress state of a geological formation surrounding a borehole includes determining a profile for each of an axial effective, a radial effective, and a hoop effective stress within at least one axial plane containing a borehole axis. A predicted radial shear response radial profile is calculated from the effective stresses within the at least one axial plane. A measurement-based estimate of a shear response radial profile within the at least one axial plane is determined from measured data. A maximum radial distance at which a difference between the predicted and measurement-based shear response radial profiles is identified within the at least one axial plane as being greater than a difference threshold. The respective axial, radial, and hoop stresses, are determined at the identified maximum radial distance. The identified stresses are indicative of an in-situ yield stress state of the rock.

6. 发明专利

BRPI0812870A2 未知
公开(公告)号：BRPI0812870A2
公开(公告)日：2014-12-09
申请号：BRPI0812870
申请日：2008-06-19
申请人： PRAD RES & DEV LTD
发明人： MATSUMOTO NORIYUKI , YAMATE TSUTOMU , SINHA BIKASH K , SATO SHIGERU , VENERUSO ANTHONY FRANK , LAWRENCE JIMMY , BARRIOL YVES , DAITO SHIGEO
IPC分类号： G01L9/00 , G01L19/00 , H03H9/00

7. 发明专利

BRPI1002414A2 未知
公开(公告)号：BRPI1002414A2
公开(公告)日：2012-05-15
申请号：BRPI1002414
申请日：2010-07-27
申请人： PRAD RES & DEV LTD
发明人： BRATTON TOM R , SINHA BIKASH K , ALATRACH SAMER
IPC分类号： G01V1/28 , G01V1/40
摘要： To determine properties of a subterranean structure, information relating to dipole compressional data is collected based on measurements by a logging tool in a borehole. The information relating to the dipole compressional data is analyzed in multiple dimensions (e.g., multiple borehole axial planes) to determine the properties of the subterranean structure through which the borehole extends.

8. 发明专利

BR112012001198A2 método para estimar tensão em uma formação, na qual um poço está presente, e aparelho para estimar tensão em uma formação, na qual um poço está presente. 未知
公开(公告)号：BR112012001198A2
公开(公告)日：2016-03-01
申请号：BR112012001198
申请日：2009-07-20
申请人： PRAD RES & DEV LTD
发明人： SINHA BIKASH K
IPC分类号： E21B47/06 , G01V1/40

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