-
公开(公告)号：US20160002991A1
公开(公告)日：2016-01-07
申请号：US14819810
申请日：2015-08-06
Applicant: Schlumberger Technology Corporation
Inventor： John Rasmus , William Lesso , John James
CPC classification number: E21B21/08 , E21B7/00 , E21B47/06 , E21B47/10 , E21B49/005 , G01V9/00 , G06F15/00
Abstract: 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.
Abstract translation: 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。
-
公开(公告)号：US10190407B2
公开(公告)日：2019-01-29
申请号：US15189343
申请日：2016-06-22
Applicant: Schlumberger Technology Corporation
Inventor： John Rasmus , William Lesso , John James
IPC: E21B47/06 , E21B49/00 , E21B47/04 , E21B21/08 , E21B34/06 , E21B43/12 , E21B49/08 , G01V3/38 , E21B47/10
Abstract: 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.
-
公开(公告)号：US20160376886A1
公开(公告)日：2016-12-29
申请号：US15189343
申请日：2016-06-22
Applicant: Schlumberger Technology Corporation
Inventor： John Rasmus , William Lesso , John James
CPC classification number: E21B47/06 , E21B21/08 , E21B34/06 , E21B43/12 , E21B47/04 , E21B47/10 , E21B49/003 , E21B49/087 , G01V3/38
Abstract: 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.
-
公开(公告)号：US09765583B2
公开(公告)日：2017-09-19
申请号：US14819810
申请日：2015-08-06
Applicant: Schlumberger Technology Corporation
Inventor： John Rasmus , William Lesso , John James
CPC classification number: E21B21/08 , E21B7/00 , E21B47/06 , E21B47/10 , E21B49/005 , G01V9/00 , G06F15/00
Abstract: 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.
-
-
-
Search Results
4
records
(took 0.017 seconds)
