公开(公告)号：US20180051551A1

公开(公告)日：2018-02-22

申请号：US15552740

申请日：2016-02-22

Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION

Inventor： Benjamin Peter Jeffryes

IPC: E21B47/022 ,  E21B47/024

CPC classification number: E21B47/022 ,  E21B47/024

Abstract: A downhole tool is provided for measuring accelerations at a location within a subterranean borehole. The tool is rotatable around the longitudinal direction of the borehole. The tool includes four accelerometers, each accelerometer measuring acceleration in a respective direction and being arranged such that at least a component of its measured acceleration is normal to the longitudinal direction. The accelerometers are further arranged such that no more than any two of the four accelerometers have their respective components parallel to the same direction. The tool also includes a first device which measures the rotational speed of the tool. The tool also includes a processor unit which relates the acceleration measured by each accelerometer to the true acceleration at that accelerometer by a respective scaling term and a respective offset, and combines the measured accelerations and the tool rotational speed to re-calibrate the scaling terms as the tool rotates.

公开(公告)号：US20160369617A1

公开(公告)日：2016-12-22

申请号：US14899873

申请日：2015-12-17

Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION

Inventor： Shunfeng Zheng ,  Benjamin Peter Jeffryes ,  Jacques Orban ,  Gokturk Tunc

IPC: E21B47/04 ,  G01B11/22 ,  E21B47/00 ,  E21B19/00 ,  E21B19/10

CPC classification number: E21B47/04 ,  E21B19/00 ,  E21B19/10 ,  E21B47/00 ,  E21B47/0006 ,  E21B47/09 ,  G01B11/22

Abstract: Systems and methods for drilling a wellbore. The method includes measuring a first distance that a drilling device is raised while connected to a drill string, determining a weight-on-bit in the drill string, determining a second distance to lower the drilling device such that a drill bit at a lower extremity of the drill string approaches toward a bottom of the wellbore, based on the first distance and the weight-on-bit, and lowering the drilling device by the second distance.

Abstract translation: 用于钻井井的系统和方法。 该方法包括测量钻孔装置在连接到钻柱时升高的第一距离，确定钻柱中的钻头重量，确定第二距离以降低钻探装置，使得钻头处于下肢 所述钻柱基于所述第一距离和所述钻头重量接近所述井眼的底部，并且将所述钻井装置降低第二距离。

公开(公告)号：US20160230484A1

公开(公告)日：2016-08-11

申请号：US15023116

申请日：2014-09-19

Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION

Inventor： Ashley Bernard Johnson ,  Devi Putra ,  Maurice Ringer ,  Benjamin Peter Jeffryes

IPC: E21B21/08 ,  G05B15/02 ,  G05D7/06 ,  E21B47/10 ,  E21B47/06

CPC classification number: E21B21/08 ,  E21B47/06 ,  E21B47/10 ,  G05B15/02 ,  G05D7/0676

Abstract: A method for determining hydraulic compliance of a wellbore during a managed pressure drilling procedure. Measurements are made of the pressure of a drilling fluid being circulated in the wellbore during the procedure at the top of a drilling annulus, the flow rate qin of the drilling fluid into the wellbore and the flow rate qout of the fluid out of the wellbore. These three measurements are used to determine the difference of the flow rates and a discrete time derivative (Pt−Pt-Δt)/Δt of the pressure, where t is time and Δt is a time interval. The differences in flow rates and the time derivatives are then processed by applying a low pass filter to determine the hydraulic compliance of the wellbore.

Abstract translation: 一种用于在管理的压力钻井程序期间确定井筒的液压顺应性的方法。 测量在钻井环顶部的过程期间在井筒中循环的钻井流体的压力，钻井流体进入井眼的流量qin和流体离开井筒的流量qout。 这三个测量用于确定流量的差异和压力的离散时间导数（Pt-Pt-Δt）/Δt，其中t是时间，Δt是时间间隔。 然后通过应用低通滤波器来处理流速和时间导数的差异，以确定井眼的水力依从性。

公开(公告)号：US20160194950A1

公开(公告)日：2016-07-07

申请号：US14983234

申请日：2015-12-29

Applicant: Schlumberger Technology Corporation

Inventor： Shunfeng Zheng ,  Benjamin Peter Jeffryes ,  Christopher C. Bogath ,  Gokturk Tunc ,  Jacques Orban

IPC: E21B47/022 ,  E21B47/00 ,  E21B49/00 ,  E21B17/00

Abstract: Pipes, drill strings including pipes, and methods for use on a drilling rig. The method includes obtaining pipe data for individual drill pipes of a drill string, obtaining a well trajectory for a well, obtaining one or more drilling measurements to be used when drilling the well, planning a first drill string based on the pipe data, the well trajectory, and the one or more drilling measurements, predicting an aging of the individual drill pipes in the first drill string while drilling the well using the first drill string, determining that a risk of failure of one or more individual pipes in the first drill string is unacceptable based on the aging of the individual pipes; and planning a second drill string in response to determining that the risk of failure is unacceptable in the first drill string.

Abstract translation: 管道，钻柱，包括管道，以及在钻机上使用的方法。 该方法包括获得用于钻柱的单独钻杆的管道数据，获得井的井轨迹，获得在钻井时使用的一个或多个钻井测量值，基于管道数据规划第一钻柱，井 轨迹和一个或多个钻孔测量，预测在使用第一钻柱钻井的同时在第一钻柱中的单个钻杆的老化，确定第一钻柱中的一个或多个单独管的故障的风险 基于各个管道的老化是不可接受的; 并且响应于确定故障的风险在第一钻柱中是不可接受的而规划第二钻柱。