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.

公开(公告)号：US20220243553A1

公开(公告)日：2022-08-04

申请号：US17724449

申请日：2022-04-19

Applicant: ConocoPhillips Company

Inventor： Randall S. SHAFER

IPC: E21B33/12 ,  E21B33/13 ,  C09K8/42 ,  C09K8/44

Abstract: A plug for Plug and Abandonment (P&A) operations. The plug is a two-part plug of bismuth-based alloy and resin, allowing for sealing of an oil well using two different mechanisms with a shorter plug. The sealing can be rock-to-rock and/or cast-in-place.

公开(公告)号：US20210156222A1

公开(公告)日：2021-05-27

申请号：US17164871

申请日：2021-02-02

Applicant: ConocoPhillips Company

Inventor： Randall S. SHAFER

IPC: E21B33/134 ,  E21B33/12 ,  E21B29/02 ,  E21B29/00

Abstract: A method for creating access to annular spacing during P&A operations is described. Specifically, helical coils are cut into one or more casings before the plugging material is set. The plugging material is able to exit the helical coils, forming multiple, small rock-to-rock seals.

公开(公告)号：US20210087904A1

公开(公告)日：2021-03-25

申请号：US17075897

申请日：2020-10-21

Applicant: ConocoPhillips Company

Inventor： David D. HEARN ,  Casey HIRSCHMANN ,  Randall S. SHAFER

IPC: E21B33/13

Abstract: A composition and methods for setting a plug for well bores undergoing plugging and abandonment operations is described. Methods of setting the plug are also described include placing a blocking device below the plug location and creating a void space above the blocking device; placing a heat resistant base plate above the blocking device and introducing nano-thermite clusters and expandable bismuth alloy pellets into the void space; igniting the thermite and cooling the melted alloy to form a permanent plug in the void space.

公开(公告)号：US20200165894A1

公开(公告)日：2020-05-28

申请号：US16774741

申请日：2020-01-28

Applicant: ConocoPhillips Company

Inventor： Randall S. SHAFER

IPC: E21B33/12 ,  E21B33/13 ,  C09K8/42 ,  C09K8/44

Abstract: A plug for Plug and Abandonment (P&A) operations. The plug is a two-part plug of bismuth-based alloy and resin, allowing for sealing of an oil well using two different mechanisms with a shorter plug. The sealing can be rock-to-rock and/or cast-in-place.

公开(公告)号：US20150129234A1

公开(公告)日：2015-05-14

申请号：US14537405

申请日：2014-11-10

Applicant: CONOCOPHILLIPS COMPANY

Inventor： Peter NOBLE ,  Randall S. SHAFER

IPC: E02B17/00 ,  E02B17/08 ,  E21B43/00 ,  E21B41/00

CPC classification number: E02B17/0021 ,  B63B21/502 ,  B63B35/4413 ,  B63B2211/06 ,  E02B17/02 ,  E02B17/08 ,  E21B7/008 ,  E21B7/02 ,  E21B41/0007

Abstract: An offshore drilling unit includes a main body configured to be bottom supported in shallow water. Also included is an anchoring assembly secured to a sea floor. Further included is a tensioning system operatively coupled to the main body and the anchoring assembly, wherein the tensioning system is configured to apply a downward force on the main body to resist ice loads imposed on the offshore drilling unit.

Abstract translation: 海上钻井单元包括被配置为底部支撑在浅水中的主体。 还包括固定到海底的锚固组件。 进一步包括可操作地联接到主体和锚固组件的张紧系统，其中张紧系统构造成在主体上施加向下的力以抵抗施加在海上钻井单元上的冰负荷。

公开(公告)号：US20140262314A1

公开(公告)日：2014-09-18

申请号：US14200584

申请日：2014-03-07

Applicant: CONOCOPHILLIPS COMPANY

Inventor： Anthony W. RAY ,  Randall S. SHAFER ,  Ravi AURORA ,  Dominique P. BERTA

IPC: E21B47/10 ,  E21B33/035 ,  E21B47/00

CPC classification number: E21B47/1025 ,  E21B33/035 ,  E21B41/005 ,  E21B43/0122

Abstract: A system for the detection, containment and removal of hydrocarbon leaks in a subsea environment.

Abstract translation: 在海底环境中检测，遏制和清除碳氢化合物泄漏的系统。

公开(公告)号：US20230371454A1

公开(公告)日：2023-11-23

申请号：US17934202

申请日：2022-09-22

Applicant: ConocoPhillips Company

Inventor： David D. HEARN ,  Casey HIRSCHMANN ,  Randall S. SHAFER

IPC: A01H6/46 ,  A01H5/10

CPC classification number: A01H6/4684 ,  A01H5/10

Abstract: A composition for a plug for wellbores undergoing plugging and abandonment operations is described. Methods of setting the plug are also described.

公开(公告)号：US20220290527A1

公开(公告)日：2022-09-15

申请号：US17829847

申请日：2022-06-01

Applicant: ConocoPhillips Company

Inventor： Randall S. SHAFER

IPC: E21B33/134 ,  E21B33/12 ,  E21B29/02 ,  E21B29/00

Abstract: A method for creating access to annular spacing during P&A operations is described. Specifically, helical coils are cut into one or more casings before the plugging material is set. The plugging material is able to exit the helical coils, forming multiple, small rock-to-rock seals.

公开(公告)号：US20200381403A1

公开(公告)日：2020-12-03

申请号：US16999802

申请日：2020-08-21

Applicant: ConocoPhillips Company

Inventor： David D. HEARN ,  Casey HIRSCHMANN ,  Randall S. SHAFER ,  Stewart M. ROBERTSON ,  Dan MUELLER

IPC: H01L25/065 ,  H01L25/00 ,  H01L23/00 ,  H01L27/11519 ,  H01L27/11556 ,  H01L27/11565 ,  H01L27/1157 ,  H01L27/11573 ,  H01L27/11575 ,  H01L27/11582

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.