公开(公告)号：US20140330521A1

公开(公告)日：2014-11-06

申请号：US14334202

申请日：2014-07-17

Applicant: Stefan Wessling ,  Jianyong Pei

Inventor： Stefan Wessling ,  Jianyong Pei

IPC: E21B49/00 ,  G01V9/00

CPC classification number: E21B49/00 ,  G01V1/40 ,  G01V9/00 ,  G01V11/00

Abstract: Disclosed is a method for estimating a pore pressure of an earth formation penetrated by a borehole and an associated uncertainty. The method includes: conveying a carrier through the borehole; performing formation measurements at a plurality of depths in the borehole using a downhole tool coupled to the carrier; defining a first depth interval and a second depth interval deeper than the first depth interval, the first depth interval including a first set of formation measurement points and the second depth interval including a second set of formation measurement points; establishing a plurality of trendlines of depth versus formation measurements using a processor with each trendline in the plurality of trendlines extending from a point in the first depth interval through a point in the second depth interval; and calculating a pore pressure line and associated uncertainty using the plurality of trendlines.

Abstract translation: 公开了一种用于估计钻孔穿透的地层孔隙压力和相关不确定性的方法。 该方法包括：通过钻孔传送载体; 使用联接到所述载体的井下工具在井眼中的多个深度处执行地层测量; 定义比第一深度间隔更深的第一深度间隔和第二深度间隔，所述第一深度间隔包括第一组地层测量点，所述第二深度间隔包括第二组地层测量点; 使用处理器建立多个深度对地层测量的趋势线，所述处理器具有从所述第一深度间隔中的点延伸到所述第二深度间隔中的点的所述多个趋势线中的每个趋势线; 以及使用所述多个趋势线计算孔隙压力线和相关联的不确定性。

公开(公告)号：US20130030705A1

公开(公告)日：2013-01-31

申请号：US13194179

申请日：2011-07-29

Applicant: Jianyong Pei ,  Thomas Dahl ,  John Macpherson

Inventor： Jianyong Pei ,  Thomas Dahl ,  John Macpherson

IPC: G06F19/00

CPC classification number: E21B47/082

Abstract: Disclosed is a method for estimating a geometry of a borehole penetrating the earth. The method includes: performing a plurality of borehole caliper measurements with N transducers at a plurality of times, wherein for each time a measurement set comprises measurements made by the N transducers at that time; dividing a cross-section of the borehole into S sectors; obtaining an estimate of the borehole geometry by connecting representative radius points in adjacent sectors; displacing each measurement set according to a displacement vector related to an offset of each measurement set from the estimated geometry if the displacement vector exceeds a selection criterion; iterating the obtaining an estimate of the borehole geometry and the displacing each measurement set based on a latest displacement vector; and providing a latest obtained estimate as the geometry of the borehole when all of the displacement vectors no longer exceed the selection criterion for the displacing.

Abstract translation: 公开了一种用于估计穿透地球的钻孔的几何形状的方法。 该方法包括：在多个时间用N个换能器执行多个井眼卡尺测量，其中每次测量组包括当时的N个换能器所做的测量; 将钻孔的横截面划分为S部分; 通过连接相邻扇区中的代表性半径点来获得井眼几何的估计; 如果所述位移矢量超过选择标准，则根据与所述估计几何的偏移相关的位移矢量移位每个测量集; 迭代获得井眼几何的估计和基于最新位移矢量移位每个测量集合; 并且当所有位移矢量不再超过用于移位的选择标准时，提供最新获得的估计作为钻孔的几何形状。

公开(公告)号：US20120222901A1

公开(公告)日：2012-09-06

申请号：US13408705

申请日：2012-02-29

Applicant: Jianyong Pei

Inventor： Jianyong Pei

IPC: E21B7/24

CPC classification number: E21B49/003 ,  E21B2041/0028

Abstract: A method and apparatus for predicting a formation parameter at a drill bit drilling a formation is disclosed. A vibration measurement is obtained at each of a plurality of depths in the borehole. A formation parameter is obtained proximate each of the plurality of depths in the borehole. A relationship is determined between the obtained vibration measurements and the measured formation parameters at the plurality of depths. A vibration measurement at a new drill bit location is obtained and the formation parameter at the new drill bit location is predicted from the vibration measurement and the determined relation. Formation type can be determined at the new drill bit location from the new vibration measurement and the determined relationship.

Abstract translation: 公开了一种用于预测钻头钻孔的钻头的地层参数的方法和装置。 在钻孔中的多个深度的每一个处获得振动测量。 在井眼中的多个深度的每一个附近获得地层参数。 在所获得的振动测量与多个深度处的测量的地层参数之间确定关系。 获得新的钻头位置的振动测量，并根据振动测量和确定的关系预测新钻头位置处的地层参数。 可以在新的钻头位置从新的振动测量和确定的关系确定形成类型。

公开(公告)号：US20120097450A1

公开(公告)日：2012-04-26

申请号：US13191016

申请日：2011-07-26

Applicant: Stefan Wessling ,  Jianyong Pei

Inventor： Stefan Wessling ,  Jianyong Pei

IPC: E21B49/00 ,  G01V5/04 ,  G06F19/00 ,  G01V3/18

CPC classification number: G01V5/04 ,  E21B47/0002

Abstract: Disclosed is a method for detecting a pair of opposing breakouts in a borehole penetrating an earth formation. The method includes: conveying a downhole tool configured to perform measurements of a property of the earth formation; producing an image of the earth formation from the measurements, the image comprising a plurality of sectors; dividing the sectors into radial segments, each segment corresponding to an opposite segment; rotating the segments at least one sector at a time until a specified angle is achieved; calculating an average value for the measurements associated with each segment for each rotation of the segments; stacking the average values for opposing segments to produce stack values; determining a maximum or minimum stack value; determining if the maximum or minimum stack value exceeds a threshold value; and detecting the first breakout and the second breakout if the maximum or minimum stack value exceeds the threshold value.

Abstract translation: 公开了一种用于检测穿透地层的钻孔中的一对相对突出物的方法。 该方法包括：输送井下工具，该井下工具被配置成对地层的性质进行测量; 从所述测量产生地层的图像，所述图像包括多个扇区; 将扇区分成径向段，每个段对应于相对的段; 一次旋转片段至少一个扇区，直到达到指定的角度; 计算每个段的每个段的相关测量的平均值，用于段的每次旋转; 堆叠相对段的平均值以产生堆栈值; 确定最大或最小堆栈值; 确定最大或最小堆叠值是否超过阈值; 并且如果最大或最小堆叠值超过阈值，则检测第一突破和第二突破。

公开(公告)号：US08788207B2

公开(公告)日：2014-07-22

申请号：US13194179

申请日：2011-07-29

Applicant: Jianyong Pei ,  Thomas Dahl ,  John Macpherson

Inventor： Jianyong Pei ,  Thomas Dahl ,  John Macpherson

IPC: E21B47/08

CPC classification number: E21B47/082

Abstract: Disclosed is a method for estimating a geometry of a borehole penetrating the earth. The method includes: performing a plurality of borehole caliper measurements with N transducers at a plurality of times, wherein for each time a measurement set comprises measurements made by the N transducers at that time; dividing a cross-section of the borehole into S sectors; obtaining an estimate of the borehole geometry by connecting representative radius points in adjacent sectors; displacing each measurement set according to a displacement vector related to an offset of each measurement set from the estimated geometry if the displacement vector exceeds a selection criterion; iterating the obtaining an estimate of the borehole geometry and the displacing each measurement set based on a latest displacement vector; and providing a latest obtained estimate as the geometry of the borehole when all of the displacement vectors no longer exceed the selection criterion for the displacing.

Abstract translation: 公开了一种用于估计穿透地球的钻孔的几何形状的方法。 该方法包括：在多个时间用N个换能器执行多个井眼卡尺测量，其中每次测量组包括当时的N个换能器所做的测量; 将钻孔的横截面划分为S部分; 通过连接相邻扇区中的代表性半径点来获得井眼几何的估计; 如果所述位移矢量超过选择标准，则根据与所述估计几何的偏移相关的位移矢量移位每个测量集; 迭代获得井眼几何的估计和基于最新位移矢量移位每个测量集合; 并且当所有位移矢量不再超过用于移位的选择标准时，提供最新获得的估计作为钻孔的几何形状。