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    • 2. 发明申请
    • METHODS FOR EVALUATING INFLOW AND OUTFLOW IN A SUBTERRAEAN WELLBORE
    • 评估地下水井流入和流出的方法
    • US20130090855A1
    • 2013-04-11
    • US13585628
    • 2012-08-14
    • John RasmusWilliam LessoJohn James
    • John RasmusWilliam LessoJohn James
    • E21B47/06
    • E21B47/06E21B21/08E21B34/06E21B43/12E21B47/04E21B47/10E21B49/003E21B49/087G01V3/38
    • A method for evaluating inflow or outflow in a subterranean wellbore includes acquiring first and second axially spaced pressure measurements in the wellbore. The pressure measurements may then be processed to obtain an interval density of drilling fluid between the measurement locations. A tool string including a large number of axially spaced pressure sensors (e.g., four or more or even six or more) electronically coupled with a surface processor via wired drill pipe may be used to obtain a plurality of interval densities corresponding to various wellbore intervals. The interval density may be measured during static conditions or while drilling and may be further processed to compute a density of an inflow constituent in the annulus. Changes in the computed interval density with time may be used as an indicator of either an inflow event or an outflow event.
    • 一种用于评估地下井眼中的流入或流出的方法包括获取井筒中的第一和第二轴向间隔的压力测量值。 然后可以处理压力测量以获得测量位置之间的钻井液的间隔密度。 可以使用包括大量轴向间隔开的压力传感器(例如,四个或更多或甚至六个或更多)的工具串,其通过有线钻杆与表面处理器电连接,以获得对应于各种井筒间隔的多个间隔密度。 间隔密度可以在静态条件下或在钻井时测量,并且可以进一步处理以计算环空中的流入成分的密度。 计算的间隔密度随时间的变化可用作流入事件或流出事件的指标。
    • 3. 发明申请
    • METHODS FOR EVALUATING BOREHOLE VOLUME CHANGES WHILE DRILLING
    • 用于评估钻孔时钻孔体积变化的方法
    • US20130090854A1
    • 2013-04-11
    • US13585601
    • 2012-08-14
    • John RasmusWilliam LessoJohn James
    • John RasmusWilliam LessoJohn James
    • G01V9/00G06F15/00
    • E21B21/08E21B7/00E21B47/06E21B47/10E21B49/005G01V9/00G06F15/00
    • A method identifying a wellbore volume change while drilling a subterranean wellbore includes acquiring first and second axially spaced pressure measurements in the wellbore. The wellbore volume change may include, for example, a borehole washout or a borehole pack-off. The pressure measurements may then be processed to obtain an interval density of drilling fluid between the measurement locations. A tool string including a large number of axially spaced pressure sensors (e.g., four or more or even six or more) electronically coupled with a surface processor via wired drill pipe may be used to obtain a plurality of interval densities corresponding to various wellbore intervals. The interval densities may be measured while drilling and may be further evaluated as an indicator of a wellbore volume change.
    • 在钻探地下井眼时识别井眼体积变化的方法包括在井眼中获取第一和第二轴向间隔的压力测量值。 井眼体积变化可以包括例如钻孔冲洗或钻孔包装。 然后可以处理压力测量以获得测量位置之间的钻井液的间隔密度。 可以使用包括大量轴向间隔开的压力传感器(例如,四个或更多或甚至六个或更多)的工具串,其通过有线钻杆与表面处理器电连接,以获得对应于各种井筒间隔的多个间隔密度。 间隔密度可以在钻井时测量,并可进一步评估为井眼体积变化的指标。
    • 6. 发明授权
    • Interval density pressure management methods
    • 间隔密度压力管理方法
    • US09134451B2
    • 2015-09-15
    • US13585650
    • 2012-08-14
    • John RasmusWilliam LessoJohn James
    • John RasmusWilliam LessoJohn James
    • E21B21/08E21B47/06G01V9/00G06F15/00E21B47/10E21B49/00
    • E21B21/08E21B7/00E21B47/06E21B47/10E21B49/005G01V9/00G06F15/00
    • A method for estimating equivalent top of fluid level or a theoretical surface annular back pressure in a subterranean wellbore includes acquiring first and second axially spaced pressure measurements in the wellbore. The pressure measurements may then be processed to compute the equivalent top of fluid level and/or theoretical surface annular back pressure of drilling fluid between the measurement locations. A tool string including a large number of axially spaced pressure sensors (e.g., four or more or even six or more) electronically coupled with a surface processor via wired drill pipe may be used to obtain a plurality of values corresponding to various wellbore intervals. The equivalent top of fluid level and/or theoretical surface annular back pressures may be used in automated managed pressure drilling operations.
    • 一种用于估计地下井筒中的液面或理论表面环形背压的等效顶部的方法包括在井眼中获取第一和第二轴向间隔的压力测量。 然后可以处理压力测量以计算测量位置之间的钻井液的液面的等效顶部和/或理论表面环形背压。 可以使用包括大量轴向间隔开的压力传感器(例如,四个或更多或甚至六个或更多)的工具串,其通过有线钻杆与表面处理器电连接,以获得对应于各种井筒间隔的多个值。 流体水平和/或理论表面环形背压的等效顶部可用于自动化管理压力钻井操作。
    • 8. 发明授权
    • Methods for evaluating inflow and outflow in a subterranean wellbore
    • 评估地下井眼的流入和流出的方法
    • US09394783B2
    • 2016-07-19
    • US13585628
    • 2012-08-14
    • John RasmusWilliam LessoJohn James
    • John RasmusWilliam LessoJohn James
    • G01V1/40E21B47/06E21B49/00E21B47/04E21B49/08G01V3/38
    • E21B47/06E21B21/08E21B34/06E21B43/12E21B47/04E21B47/10E21B49/003E21B49/087G01V3/38
    • A method for evaluating inflow or outflow in a subterranean wellbore includes acquiring first and second axially spaced pressure measurements in the wellbore. The pressure measurements may then be processed to obtain an interval density of drilling fluid between the measurement locations. A tool string including a large number of axially spaced pressure sensors (e.g., four or more or even six or more) electronically coupled with a surface processor via wired drill pipe may be used to obtain a plurality of interval densities corresponding to various wellbore intervals. The interval density may be measured during static conditions or while drilling and may be further processed to compute a density of an inflow constituent in the annulus. Changes in the computed interval density with time may be used as an indicator of either an inflow event or an outflow event.
    • 一种用于评估地下井眼中的流入或流出的方法包括获取井筒中的第一和第二轴向间隔的压力测量值。 然后可以处理压力测量以获得测量位置之间的钻井液的间隔密度。 可以使用包括大量轴向间隔开的压力传感器(例如,四个或更多或甚至六个或更多)的工具串,其通过有线钻杆与表面处理器电连接,以获得对应于各种井筒间隔的多个间隔密度。 间隔密度可以在静态条件下或在钻井时测量,并且可以进一步处理以计算环空中的流入成分的密度。 计算的间隔密度随时间的变化可用作流入事件或流出事件的指标。
    • 10. 发明申请
    • INTERVAL DENSITY PRESSURE MANAGEMENT METHODS
    • 间隔密度压力管理方法
    • US20130047696A1
    • 2013-02-28
    • US13585650
    • 2012-08-14
    • John RasmusWilliam LessoJohn James
    • John RasmusWilliam LessoJohn James
    • E21B47/06G06F19/00
    • E21B21/08E21B7/00E21B47/06E21B47/10E21B49/005G01V9/00G06F15/00
    • A method for estimating equivalent top of fluid level or a theoretical surface annular back pressure in a subterranean wellbore includes acquiring first and second axially spaced pressure measurements in the wellbore. The pressure measurements may then be processed to compute the equivalent top of fluid level and/or theoretical surface annular back pressure of drilling fluid between the measurement locations. A tool string including a large number of axially spaced pressure sensors (e.g., four or more or even six or more) electronically coupled with a surface processor via wired drill pipe may be used to obtain a plurality of values corresponding to various wellbore intervals. The equivalent top of fluid level and/or theoretical surface annular back pressures may be used in automated managed pressure drilling operations.
    • 一种用于估计地下井筒中的液面或理论表面环形背压的等效顶部的方法包括在井眼中获取第一和第二轴向间隔的压力测量。 然后可以处理压力测量以计算测量位置之间的钻井液的液面的等效顶部和/或理论表面环形背压。 可以使用包括大量轴向间隔开的压力传感器(例如,四个或更多或甚至六个或更多)的工具串,其通过有线钻杆与表面处理器电连接,以获得对应于各种井筒间隔的多个值。 流体水平和/或理论表面环形背压的等效顶部可用于自动化管理压力钻井操作。