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公开(公告)号：US20210388696A1
公开(公告)日：2021-12-16
申请号：US17462598
申请日：2021-08-31
Applicant: CONOCOPHILLIPS COMPANY
Inventor： Rick WATTS , Stein HAAVARDSTEIN , Lars HOVDA , James C. STEVENS , Dan MUELLER , Brett BORLAND , Amal PHADKE , Praveen GONUGUNTLA
Abstract: The invention relates to a method of conducting a perf wash cement (“P/W/C”) abandonment job in an offshore oil or gas well annulus (2), in particular the washing or cementing operation using a rotating head (6, 8) with nozzles (7, 9) dispensing wash fluid or cement at pressure. Certain values of parameters of a washing or cementing job have been found surprisingly to affect the quality of the job, or the degree to which they affect the quality of the job has been unexpected. These include including rotation rate of the tool, the direction of translational movement of the tool, and the volume flow rate and pressure per nozzle of cement or wash fluid (and hence nozzle size).
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公开(公告)号：US20240318524A9
公开(公告)日：2024-09-26
申请号：US17834826
申请日：2022-06-07
Applicant: ConocoPhillips Company
Inventor： David D. HEARN , Casey HIRSCHMANN , Randall S. SHAFER , Stewart M. ROBERTSON , Dan MUELLER
IPC: E21B33/13 , E21B29/02 , E21B29/10 , E21B33/12 , E21B36/00 , H01L25/00 , H01L25/065 , H01L27/11556 , H01L27/11565 , H01L27/1157 , H01L27/11573 , H01L27/11582
CPC classification number: E21B33/13 , E21B29/02 , E21B29/10 , E21B33/12 , E21B36/008 , H01L25/0657 , H01L25/50 , H10B41/27 , H10B43/10 , H10B43/27 , H10B43/35 , H10B43/40 , H01L24/05 , H01L2224/0401
Abstract: This disclosure describes a device and method of sealing perforations on a well casing inside a subterranean well. The device comprises a generally cylindrical sleeve having an open top and a closed bottom; a heater located inside the sleeve, the heater comprising a thermite mixture; an ignition mechanism that ignites the thermite mixture upon actuation; and a string connected to the heater ignition and detachably engages the sleeve. The method comprises lowering a body of meltable plugging material into the well casing near the perforations; lowering the plugging device into the well casing immediately on top of the body of meltable plugging material; melting the meltable plugging material by igniting the thermite thereby transferring heat to the body of meltable plugging material; forcing the molten plugging material into the perforations by pushing the plugging tool further downhole; cooling the plugging tool and the plugging material until the plugging material solidifies; disengaging the tubing string from the sleeve and retrieving the tubing string with the heater; and removing the sleeve and bismuth remaining in the well casing, but not in the perforations.
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公开(公告)号：US20160023732A1
公开(公告)日：2016-01-28
申请号：US14800861
申请日：2015-07-16
Applicant: CONOCOPHILLIPS COMPANY
Inventor： Scott E. COBLITZ , Amal C. PHADKE , Derrick LASKOWSKI , Dan MUELLER , Daniel R. GIVAN , George Z. GU
CPC classification number: B63G8/001 , B63B35/003 , B63G8/04 , B63G8/22 , B63G2008/002 , E02B17/02 , E02B17/021 , E02B2017/0043 , E02B2017/0047 , E02B2017/0052 , E21B43/01
Abstract: A subsea vessel includes filler material, which may be enclosed by an outer shell and may provide the vessel with a density for floatation. Exemplary applications for the vessels include buoyancy and tanks to hold fluids for operations subsea. The filler may include thermoplastic materials and/or concrete, which may be formed to create internal void spaces.
Abstract translation: 海底容器包括填充材料，其可以由外壳包围并且可以为容器提供用于浮选的密度。 船舶的示例性应用包括浮力和用于保持海底作业的流体的坦克。 填料可以包括热塑性材料和/或混凝土，其可形成以产生内部空隙。
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公开(公告)号：US20220307343A1
公开(公告)日：2022-09-29
申请号：US17834826
申请日：2022-06-07
Applicant: ConocoPhillips Company
Inventor： David D. HEARN , Casey HIRSCHMANN , Randall S. SHAFER , Stewart M. ROBERTSON , Dan MUELLER
IPC: E21B33/13 , E21B29/10 , E21B29/02 , H01L25/065 , H01L25/00 , H01L27/11556 , H01L27/11565 , H01L27/1157 , H01L27/11573 , H01L27/11582 , E21B33/12 , E21B36/00
Abstract: This disclosure describes a device and method of sealing perforations on a well casing inside a subterranean well. The device comprises a generally cylindrical sleeve having an open top and a closed bottom; a heater located inside the sleeve, the heater comprising a thermite mixture; an ignition mechanism that ignites the thermite mixture upon actuation; and a string connected to the heater ignition and detachably engages the sleeve. The method comprises lowering a body of meltable plugging material into the well casing near the perforations; lowering the plugging device into the well casing immediately on top of the body of meltable plugging material; melting the meltable plugging material by igniting the thermite thereby transferring heat to the body of meltable plugging material; forcing the molten plugging material into the perforations by pushing the plugging tool further downhole; cooling the plugging tool and the plugging material until the plugging material solidifies; disengaging the tubing string from the sleeve and retrieving the tubing string with the heater; and removing the sleeve and bismuth remaining in the well casing, but not in the perforations.
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公开(公告)号：US20220056783A1
公开(公告)日：2022-02-24
申请号：US17406969
申请日：2021-08-19
Applicant: CONOCOPHILLIPS COMPANY
Inventor： Lars HOVDA , James C. STEVENS , Dan MUELLER , Amal PHADKE , Praveen GONUGUNTLA
IPC: E21B33/14
Abstract: The invention relates to a cementing tool for use in oil and gas well decommissioning operations, in particular so called perforate, wash and cement procedures. The tool (1) is designed for running in a well on drill string and for jetting cement through previously formed perforations in the casing (10) to fill the outer annulus (9) with cement. The tool (1) has a cylindrical wall (3) which is formed from steel (11) and elastomeric (5) elements, whereby it is expandable between a first diameter in which it may be run down the well and a second, larger diameter deployed during cementing operations. (FIG. 2).
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Patent Agency Ranking
公开(公告)号：US20220056782A1
公开(公告)日：2022-02-24
申请号：US17406669
申请日：2021-08-19
Applicant: CONOCOPHILLIPS COMPANY
Inventor： Lars HOVDA , Dan MUELLER , James C. STEVENS , Amal PHADKE , Praveen GONUGUNTLA
Abstract: The invention relates to a method of conducting a perf wash cement (“P/W/C”) abandonment job in an offshore oil or gas well annulus, in particular the washing or cementing operation using a rotating head with nozzles dispensing wash fluid or cement at pressure. A new design of bottom hole assembly is proposed in which the cementing tool has a relatively large diameter in order to optimize pressure whilst the wash tool has a relatively small diameter. The wash process, for a number of reasons, appears to be less sensitive to tool diameter and making the wash tool smaller reduces the overall risk of stuck pipe.
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公开(公告)号：US20180148991A1
公开(公告)日：2018-05-31
申请号：US15706071
申请日：2017-09-15
Applicant: ConocoPhillips Company
Inventor： David D. Hearn , Casey HIRSCHMANN , Randall S. Shafer , Stewart M. ROBERTSON , Dan MUELLER
Abstract: This disclosure describes a device and method of sealing perforations on a well casing inside a subterranean well. The device comprises a generally cylindrical sleeve having a open top and a closed bottom; a heater located inside the sleeve, the heater comprising a thermite mixture; an ignition mechanism that ignites the thermite mixture upon actuation; and a string connected to the heater ignition and detachably engages the sleeve. The method comprises lowering a body of meltable plugging material into the well casing near the perforations; lowering the plugging device into the well casing immediately on top of the body of meltable plugging material; melting the meltable plugging material by igniting the thermite thereby transferring heat to the body of meltable plugging material; forcing the molten plugging material into the perforations by pushing the plugging tool further downhole; cooling the plugging tool and the plugging material until the plugging material solidifies; disengaging the tubing string from the sleeve and retrieving the tubing string with the heater; and removing the sleeve and bismuth remaining in the well casing, but not in the perforations.
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公开(公告)号：US20240110459A1
公开(公告)日：2024-04-04
申请号：US18539478
申请日：2023-12-14
Applicant: CONOCOPHILLIPS COMPANY
Inventor： Lars HOVDA , James C. STEVENS , Dan MUELLER , Praveen GONUGUNTLA
CPC classification number: E21B33/14 , E21B33/13 , E21B37/00 , E21B41/0078
Abstract: The invention relates to a cementing tool for use in oil and gas well decommissioning operations, in particular so called perforate, wash and cement procedures. The tool (1) is designed for running in a well on drill string and for jetting cement through previously formed perforations in the casing (10) to fill the outer annulus (9) with cement. The tool (1) has a cylindrical wall (3) which is formed from steel (11) and elastomeric (5) elements, whereby it is expandable between a first diameter in which it may be run down the well and a second, larger diameter deployed during cementing operations. (FIG. 2).
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公开(公告)号：US20220290526A1
公开(公告)日：2022-09-15
申请号：US17829970
申请日：2022-06-01
Applicant: CONOCOPHILLIPS COMPANY
Inventor： Dan MUELLER , Geir Ove TITLESTAD , David D. HEARN , Curtis G. BLOUNT , Rick D. WATTS , Randall S. SHAFER , Dale R. DOHERTY
Abstract: Method of plugging a hydrocarbon well by a through-tubing technique are described. The method allows the tubing to be left in place. Only a short (
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公开(公告)号：US20200040707A1
公开(公告)日：2020-02-06
申请号：US16529892
申请日：2019-08-02
Applicant: CONOCOPHILLIPS COMPANY
Inventor： Rick WATTS , Stein HAAVARDSTEIN , Lars HOVDA , James C. STEVENS , Dan MUELLER , Brett BORLAND , Amal PHADKE , Praveen GONUGUNTLA
Abstract: The invention relates to a method of conducting a perf wash cement (“P/W/C”) abandonment job in an offshore oil or gas well annulus (2), in particular the washing or cementing operation using a rotating head (6, 8) with nozzles (7, 9) dispensing wash fluid or cement at pressure. Certain values of parameters of a washing or cementing job have been found surprisingly to affect the quality of the job, or the degree to which they affect the quality of the job has been unexpected. These include including rotation rate of the tool, the direction of translational movement of the tool, and the volume flow rate and pressure per nozzle of cement or wash fluid (and hence nozzle size).
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