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1. 发明授权

US08281875B2 Pressure and flow control in drilling operations 有权
标题翻译：钻井作业中的压力和流量控制
公开(公告)号：US08281875B2
公开(公告)日：2012-10-09
申请号：US12638012
申请日：2009-12-15
申请人： James R. Lovorn , Carlos Bruder , Neal G. Skinner , Joe Karigan
发明人： James R. Lovorn , Carlos Bruder , Neal G. Skinner , Joe Karigan
IPC分类号： E21B44/00
CPC分类号： E21B21/08 , E21B21/10
摘要： A well drilling system for use with a drilling fluid pump includes a flow control device regulating flow from the pump to a drill string interior; and another flow control device regulating flow through a line in communication with an annulus. Flow is simultaneously permitted through the flow control devices. A method of maintaining a desired bottom hole pressure includes dividing drilling fluid flow between a line in communication with a drill string interior and a line in communication with an annulus; the flow dividing step including permitting flow through a flow control device interconnected between a pump and the drill string interior; and the flow dividing step including permitting flow through another flow control device interconnected between the pump and the annulus, while flow is permitted through the first flow control device.
摘要翻译：用于钻井液泵的钻井系统包括调节从泵到钻柱内部的流动的流量控制装置; 以及另一个流量控制装置，其调节通过与环形空间连通的线路的流动。通过流量控制装置同时允许流量。保持所需井底压力的方法包括在与钻柱内部连通的管线与与环空连通的管线之间划分钻井液流; 所述分流步骤包括允许通过在泵和所述钻柱内部之间互连的流量控制装置的流动; 并且所述分流步骤包括允许通过所述泵和所述环之间互连的另一流量控制装置的流动，同时允许通过所述第一流量控制装置的流动。

2. 发明授权

US10047578B2 Pressure control in drilling operations with choke position determined by Cv curve 有权
公开(公告)号：US10047578B2
公开(公告)日：2018-08-14
申请号：US14412631
申请日：2012-07-02
申请人： James R. Lovorn , Nancy S. Davis , Cody N. Butler
发明人： James R. Lovorn , Nancy S. Davis , Cody N. Butler
IPC分类号： E21B21/08 , E21B21/10 , E21B34/02 , E21B47/06
摘要： A method of controlling pressure in a wellbore can include determining a desired position for a choke, the determining being based on a Cv curve for the choke, and adjusting the choke to the desired position, thereby producing a desired backpressure. A wellbore drilling system can include a choke which variably restricts flow of fluid from the wellbore, and a control system which compares actual and desired wellbore pressures and, in response to a difference between the actual and desired wellbore pressures, adjusts the choke to a predetermined position which corresponds to a desired Cv of the choke. A method of controlling pressure in a wellbore can include comparing an actual wellbore pressure to a desired wellbore pressure and, in response to a difference between the actual and desired wellbore pressures, adjusting a choke to a predetermined position, the predetermined position corresponding to a desired Cv of the choke.

3. 发明申请

US20120165997A1 WELL CONTROL SYSTEMS AND METHODS 有权
标题翻译：井控系统和方法
公开(公告)号：US20120165997A1
公开(公告)日：2012-06-28
申请号：US13392900
申请日：2010-01-05
申请人： Derrick W. Lewis , Ronald J. Dirksen , David Michael Radley , James R. Lovorn , Fredrick D. Curtis
发明人： Derrick W. Lewis , Ronald J. Dirksen , David Michael Radley , James R. Lovorn , Fredrick D. Curtis
IPC分类号： G05B17/00
CPC分类号： E21B21/08 , E21B44/005
摘要： A well control method can include removing from a wellbore an undesired influx from a formation into the wellbore, determining a desired pressure profile in real time with a hydraulics model, and automatically operating a flow choking device while removing the undesired influx from the wellbore, thereby influencing an actual pressure profile toward the desired pressure profile. Another well control method can include removing out of a wellbore an undesired influx from a formation into the wellbore, determining a desired wellbore pressure with a hydraulics model, the desired wellbore pressure preventing further influx into the wellbore while removing the undesired influx from the wellbore, and automatically operating a flow choking device while removing the undesired influx from the wellbore, thereby influencing an actual wellbore pressure toward the desired wellbore pressure.
摘要翻译：井控制方法可以包括从井筒中去除从地层到井筒的不期望的流入，用液压模型实时确定期望的压力分布，并且自动地操作流动阻塞装置，同时从井筒除去不需要的流入，由此影响到所需压力分布的实际压力分布。另一井井控制方法可以包括从井筒中去除从地层到井筒的不期望的流入，用液压模型确定所需的井眼压力，所需的井眼压力防止进一步流入井眼，同时从井眼除去不想要的流入物，并且自动地操作流动阻塞装置，同时从井筒除去不期望的流入，从而影响实际井筒压力朝向所需井筒压力。

4. 发明授权

US09279298B2 Well control systems and methods 有权
标题翻译：井控系统和方法
公开(公告)号：US09279298B2
公开(公告)日：2016-03-08
申请号：US13392900
申请日：2010-01-05
申请人： Derrick W. Lewis , Ronald J. Dirksen , David Michael Radley , James R. Lovorn , Fredrick D. Curtis
发明人： Derrick W. Lewis , Ronald J. Dirksen , David Michael Radley , James R. Lovorn , Fredrick D. Curtis
IPC分类号： E21B21/08 , E21B44/00
CPC分类号： E21B21/08 , E21B44/005
摘要： A well control method can include removing from a wellbore an undesired influx from a formation into the wellbore, determining a desired pressure profile in real time with a hydraulics model, and automatically operating a flow choking device while removing the undesired influx from the wellbore, thereby influencing an actual pressure profile toward the desired pressure profile. Another well control method can include removing out of a wellbore an undesired influx from a formation into the wellbore, determining a desired wellbore pressure with a hydraulics model, the desired wellbore pressure preventing further influx into the wellbore while removing the undesired influx from the wellbore, and automatically operating a flow choking device while removing the undesired influx from the wellbore, thereby influencing an actual wellbore pressure toward the desired wellbore pressure.
摘要翻译：井控制方法可以包括从井筒中去除从地层到井筒的不期望的流入，用液压模型实时确定期望的压力分布，并且自动地操作流动阻塞装置，同时从井筒除去不需要的流入，由此影响到所需压力分布的实际压力分布。另一井井控制方法可以包括从井筒中去除从地层到井筒的不期望的流入，用液压模型确定所需的井眼压力，所需的井眼压力防止进一步流入井眼，同时从井眼除去不想要的流入物，并且自动地操作流动阻塞装置，同时从井筒除去不期望的流入，从而影响实际井筒压力朝向所需井筒压力。

5. 发明申请

US20140290964A1 PRESSURE CONTROL IN DRILLING OPERATIONS WITH OFFSET APPLIED IN RESPONSE TO PREDETERMINED CONDITIONS 审中-公开
标题翻译：钻孔操作中的压力控制应用于预测条件的偏差
公开(公告)号：US20140290964A1
公开(公告)日：2014-10-02
申请号：US14362565
申请日：2012-07-02
申请人： James R. Lovorn , Nancy S. Davis , Cody N. Butler
发明人： James R. Lovorn , Nancy S. Davis , Cody N. Butler
IPC分类号： E21B34/10
CPC分类号： E21B34/10 , E21B21/08
摘要： A method of controlling pressure in a wellbore can include determining a desired well pressure setpoint, adding an offset to the setpoint in response to an actual well pressure deviating from the setpoint by a predetermined amount, and adjusting a flow control device, thereby influencing the actual well pressure toward the setpoint plus the offset. A well system can include a flow control device which variably restricts flow from a wellbore, and a control system which determines a desired well pressure setpoint, compares the setpoint to an actual well pressure, and adds an offset to the setpoint in response to a predetermined amount of deviation between the setpoint and the actual well pressure, whereby the control system adjusts the flow control device, and thereby influences the actual well pressure toward the setpoint plus the offset.
摘要翻译：控制井眼中的压力的方法可以包括确定期望的井压设定点，响应于偏离设定点预定量的实际井压而将偏移量添加到设定点，以及调节流量控制装置，由此影响实际对设定值的加压偏移很大。井系统可以包括可变地限制来自井筒的流量的流量控制装置，以及确定期望井压力设定点的控制系统，将设定值与实际油井压力进行比较，并且响应于预定的设定值与实际井压之间的偏差量，由此控制系统调节流量控制装置，从而影响到设定点的实际井压加偏移。

6. 发明授权

US08820405B2 Segregating flowable materials in a well 有权
标题翻译：分离井中的可流动材料
公开(公告)号：US08820405B2
公开(公告)日：2014-09-02
申请号：US13345546
申请日：2012-01-06
申请人： Jay K. Turner , James R. Lovorn
发明人： Jay K. Turner , James R. Lovorn
IPC分类号： E21B33/13 , E21B21/08
CPC分类号： E21B21/08 , E21B33/13
摘要： A method of segregating flowable materials in conjunction with a subterranean well can include segregating flowable cement from a fluid by placing a flowable barrier substance between the cement and the fluid, and the barrier substance substantially preventing displacement of the cement by force of gravity through the barrier substance and into the fluid. Another method of segregating flowable materials can include flowing a barrier substance into a wellbore above a fluid already in the wellbore, and then flowing cement into the wellbore above the barrier substance. A system for use in conjunction with a subterranean well can include a flowable cement isolated from a fluid by a flowable barrier substance positioned between the cement and the fluid, whereby the barrier substance substantially prevents displacement of the cement by force of gravity through the barrier substance and into the fluid.
摘要翻译：将可流动材料与地下井分开的方法可以包括通过在水泥和流体之间放置可流动的阻挡物质将可流动的水泥从流体中分离出来，并且阻挡物质基本上防止水泥通过重力作用通过阻挡层物质进入流体。分离可流动材料的另一种方法可以包括将阻挡物质流入已经在井眼中的流体上方的井筒中，然后将水泥流入屏障物质上方的井筒内。与地下井一起使用的系统可以包括通过位于水泥和流体之间的可流动阻挡物质从流体隔离的可流动的水泥，由此阻挡物质基本上防止水泥被重力作用通过阻挡物质并进入流体。

7. 发明授权

US08261826B2 Wellbore pressure control with segregated fluid columns 有权
标题翻译：井筒压力控制与分离的流体柱
公开(公告)号：US08261826B2
公开(公告)日：2012-09-11
申请号：US13457108
申请日：2012-04-26
申请人： James R. Lovorn , Emad Bakri , Jay K. Turner , Ryan G. Ezell
发明人： James R. Lovorn , Emad Bakri , Jay K. Turner , Ryan G. Ezell
IPC分类号： E21B21/00 , E21B21/08 , E21B33/13 , E21B44/00
CPC分类号： E21B21/08
摘要： A method of controlling pressure in a wellbore can include placing a barrier substance in the wellbore while a fluid is present in the wellbore, and flowing another fluid into the wellbore while the first fluid and the barrier substance are in the wellbore. The first and second fluids may have different densities. Another method can include circulating a fluid through a tubular string and an annulus formed between the tubular string and the wellbore, then partially withdrawing the tubular string from the wellbore, then placing a barrier substance in the wellbore, then partially withdrawing the tubular string from the wellbore and then flowing another fluid into the wellbore. A well system can include at least two fluids in a wellbore, the fluids having different densities, and a barrier substance separating the fluids.
摘要翻译：控制井眼中的压力的方法可以包括在液体存在于井眼中时将阻挡物放置在井筒中，并且当第一流体和阻挡物质在井眼中时将另一流体流入井眼。第一和第二流体可以具有不同的密度。另一种方法可以包括将流体循环通过管状管柱和形成在管状管柱和井筒之间的环形空间，然后将管状管柱从井眼中部分抽出，然后将阻挡物质放置在井眼中，然后将管状管柱从然后将另一种流体流入井眼。井系统可以包括在井筒中的至少两种流体，具有不同密度的流体和分离流体的阻挡物质。

8. 发明授权

US08240398B2 Annulus pressure setpoint correction using real time pressure while drilling measurements 有权
标题翻译：环钻压力设定值校正，使用实时压力进行钻孔测量
公开(公告)号：US08240398B2
公开(公告)日：2012-08-14
申请号：US13116082
申请日：2011-05-26
申请人： James R. Lovorn , Saad Saeed , Nancy Davis
发明人： James R. Lovorn , Saad Saeed , Nancy Davis
IPC分类号： E21B21/08
CPC分类号： E21B21/08 , E21B21/106 , E21B2021/006
摘要： A method of controlling pressure in a wellbore can include determining a real time wellbore pressure PwbRT1 at a pressure sensor in the wellbore, calculating hydrostatic pressure Ph1 at the pressure sensor, determining a real time annulus pressure PaRT, calculating friction pressure Pf due at least to circulation of the fluid through the wellbore and depth in the wellbore, calculating a friction pressure correction factor CFPf1 equal to (PwbRT1−Ph1−PaRT)/Pf, and controlling operation of a pressure control device, based on the friction pressure correction factor CFPf1. The method can further include determining a desired wellbore pressure PwbD1 at the pressure sensor, calculating an annulus pressure setpoint PaSP1 equal to PwbD1−Ph1−(Pf*CFPf1), and adjusting the pressure control device as needed to maintain PaRT equal to PaSP1.
摘要翻译：控制井眼中的压力的方法可以包括确定在井眼中的压力传感器处的实时井眼压力PwbRT1，计算压力传感器处的静压力Ph1，确定实时环空压力PaRT，计算摩擦压力Pf至少为流体通过井筒的循环和井眼中的深度，计算等于（PwbRT1-Ph1-PaRT）/ Pf的摩擦压力校正因子CFPf1，并且基于摩擦压力校正因子CFPf1来控制压力控制装置的操作。该方法还可以包括确定压力传感器处的期望的井眼压力PwbD1，计算等于PwbD1-Ph1-（Pf * CFPf1）的环形压力设定点PaSP1，以及根据需要调节压力控制装置以将PaRT保持等于PaSP1。

9. 发明授权

US09567843B2 Well drilling methods with event detection 有权
标题翻译：钻井方法与事件检测
公开(公告)号：US09567843B2
公开(公告)日：2017-02-14
申请号：US12831716
申请日：2010-07-07
申请人： Saad Saeed , Charles M. Pool , Frank Urias , James R. Lovorn , Emad Bakri
发明人： Saad Saeed , Charles M. Pool , Frank Urias , James R. Lovorn , Emad Bakri
IPC分类号： E21B47/00 , E21B44/00 , E21B21/08 , E21B21/00
CPC分类号： E21B44/00 , E21B21/08 , E21B2021/006
摘要： A drilling method includes assigning values to behaviors of drilling parameters during a drilling operation; forming multiple parameter signatures, each of the parameter signatures comprising a respective combination of the values; comparing the parameter signatures to multiple event signatures, each of the event signatures being indicative of a respective drilling event; and controlling the drilling operation in response to at least a partial match resulting from comparing the parameter signatures to the event signatures. Another method includes defining an event signature comprising a unique combination of a behavior of each of multiple drilling parameters, the event signature being indicative of a drilling event; accessing data from each of multiple sensors which sense the respective drilling parameters during a drilling operation; determining multiple parameter signature segments from the respective sensed drilling parameters; combining the parameter signature segments, thereby forming a parameter signature; and comparing the parameter signature to the event signature.
摘要翻译：一种钻井方法包括在钻井作业期间为钻井参数的行为分配值; 形成多个参数签名，每个所述参数签名包括所述值的相应组合; 将参数签名与多个事件签名进行比较，每个事件签名指示相应的钻井事件; 以及响应于通过将参数签名与事件签名进行比较而产生的至少一部分匹配来控制钻孔操作。另一种方法包括定义事件签名，其包括多个钻井参数中的每一个的行为的唯一组合，所述事件签名指示钻井事件; 从钻孔操作期间感测各钻孔参数的多个传感器中的每一个访问数据; 从相应感测的钻孔参数确定多个参数签名段; 组合参数签名段，从而形成参数签名; 并将参数签名与事件签名进行比较。

10. 发明授权

US09528334B2 Well drilling methods with automated response to event detection 有权
标题翻译：钻井方法具有自动响应事件检测功能
公开(公告)号：US09528334B2
公开(公告)日：2016-12-27
申请号：US13491513
申请日：2012-06-07
申请人： Nancy Davis , Cody Butler , Charles M. Pool , Ryan Hourd , Aaron Reynolds , Craig W. Godfrey , Frank Urias , Saad Saeed , Emad Bakri , James R. Lovorn
发明人： Nancy Davis , Cody Butler , Charles M. Pool , Ryan Hourd , Aaron Reynolds , Craig W. Godfrey , Frank Urias , Saad Saeed , Emad Bakri , James R. Lovorn
IPC分类号： E21B44/00 , E21B21/10 , E21B47/00 , E21B21/08 , E21B21/00
CPC分类号： E21B21/10 , E21B21/08 , E21B44/00 , E21B47/00 , E21B2021/006
摘要： A well drilling method can include detecting a drilling event by comparing a parameter signature generated during drilling to an event signature indicative of the drilling event, and automatically controlling a drilling operation in response to at least a partial match resulting from comparing the parameter signature to the event signature. A well drilling system can include a control system which compares a parameter signature for a drilling operation to an event signature indicative of a drilling event, and a controller which controls the drilling operation automatically in response to the drilling event being indicated by at least a partial match between the parameter signature and the event signature.
摘要翻译：钻井方法可以包括通过将在钻井过程中生成的参数签名与指示钻井事件的事件签名进行比较来检测钻井事件，以及响应于至少部分匹配而自动地控制钻井操作，所述至少一部分匹配是将参数签名与事件签名。钻井系统可以包括将钻井操作的参数签名与指示钻井事件的事件签名进行比较的控制系统;以及控制器，其响应于钻井事件自动地控制钻井操作，所述控制系统由至少部分匹配参数签名和事件签名。

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