公开(公告)号：US09903176B2

公开(公告)日：2018-02-27

申请号：US14622012

申请日：2015-02-13

申请人： Weatherford Technology Holdings, LLC

发明人： Varadaraju Gandikota ,  Lev Ring

IPC分类号： E21B33/127 ,  E21B43/10 ,  E21B23/06 ,  E21B33/12 ,  E21B33/128

CPC分类号： E21B33/127 ,  E21B23/06 ,  E21B33/1208 ,  E21B33/128 ,  E21B43/103

摘要： Methods and apparatus include tubing expanded to create a seal in an annulus surrounding the tubing. The tubing includes a sealing material selected to cause forming of undulations in a diameter of the tubing upon expansion of the tubing. Various factors of the sealing material such as deviations in its thickness influence sealing performance of the tubing with the sealing material.

公开(公告)号：US20170328151A1

公开(公告)日：2017-11-16

申请号：US15150522

申请日：2016-05-10

申请人： Weatherford Technology Holdings, LLC

发明人： Walter S. Dillard ,  Lev Ring

IPC分类号： E21B21/08 ,  E21B44/00 ,  E21B7/00 ,  E21B21/10 ,  E21B47/12 ,  E21B47/06

CPC分类号： E21B21/08 ,  E21B21/106 ,  G01F1/40 ,  G01F1/42 ,  G01F1/44 ,  G01F1/88

摘要： A drilling system used with drilling fluid for drilling a wellbore has at least one choke in adjustable communication with flow from the wellbore. A programmable control device determines a flow coefficient value of the choke from a measured position value and a stored characteristic of the choke. The device then calculates a first value of the flow of the drilling fluid from the wellbore through the choke based on the flow coefficient value and a pressure differential measured across the choke. The device adjusts operation of the drilling system at least partially based on the calculated flow value. To adjust operation, the device can set the choke (or another choke) to a set flow value relative to the calculated first flow value. Density of the flow can also be determined so the device can adjust operation based on mass flow rate.

公开(公告)号：US20160097270A1

公开(公告)日：2016-04-07

申请号：US14874613

申请日：2015-10-05

申请人： Weatherford Technology Holdings, LLC

发明人： Ilia Pobedinski ,  Sanjit Roy ,  Ferhat Gumus ,  Koray Kinik ,  Iain Cook ,  Lev Ring ,  Guy Feasey

IPC分类号： E21B44/00 ,  G05B17/02

CPC分类号： E21B44/00 ,  E21B21/08 ,  G05B17/02

摘要： A computerized control system performs controlled pressure drilling in a formation with a drilling system according to a plan. A setup of at least the plan, the formation, and the drilling system is configured in the control system, and the setup is integrated with the drilling system. Functioning of the set up can then be conducted using one of a plurality of control modes, including an operating mode and a simulating mode. The control system functions the setup according to the operating mode for operational interaction with the setup using the integration of the setup with the drilling system. The control system can switch from the operating mode to the simulating mode for simulated interaction with the setup. The control system simulates for at least a time period the functioning of the setup according to the simulating mode using the integration of the setup with the drilling system. Current operations continue as at least one simulated operation or event is projected in the future. Ultimately, results from the simulating mode can be used in the operating mode as further operations continue.

摘要翻译： 计算机控制系统根据计划在具有钻井系统的地层中进行受控压力钻井。 在控制系统中，至少配置了计划，地层和钻井系统，并将设置与钻井系统集成。 然后可以使用包括操作模式和模拟模式的多种控制模式中的一种进行设置的功能。 控制系统根据操作模式对设置进行操作，以便与设置与钻井系统的集成进行与设置的操作交互。 控制系统可以从操作模式切换到仿真模式，以便与设置进行模拟交互。 控制系统至少在一段时间内根据模拟模式模拟设置的功能，使用该设置与钻井系统的集成。 当前操作继续进行，因为将来至少投射一个模拟操作或事件。 最终，随着进一步的操作继续，模拟模式的结果可以用于操作模式。