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公开(公告)号：US20220018202A1
公开(公告)日：2022-01-20
申请号：US17353083
申请日：2021-06-21
Applicant: CONOCOPHILLIPS COMPANY
Inventor： James S. RUTHERFORD , Charles COLPITT , Andrew H. WHITFIELD
Abstract: The invention relates to a method and apparatus for remediating damaged casing or liner in a hydrocarbon well, e.g. caused by collapsed formation. Damaged liner is milled away and a straddle joint (20) located in the exposed ends of liner (8,9), bridging the gap between them and restoring most of the inner diameter. The straddle joint (20) includes cement ports (25) through which cement may be injected into any cavity (4) in the rock surrounding the straddle joint (20), thereby supporting the rock and helping to prevent further collapse.
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公开(公告)号：US20200095840A1
公开(公告)日：2020-03-26
申请号：US16577509
申请日：2019-09-20
Applicant: Conocophillips Company
Inventor： Gregory E. GILL , Charles COLPITT
Abstract: Methods of plugging a hydrocarbon well by using degradable plugs plus a degradable tape to ensure pressure testing to 10,000 psi. When the plug is no longer needed, a degradation fluid or fluids are pumped downhole and that fluid or fluids degrade the degradable plugs and degradable tape, thus avoiding the production of any solids large enough to clog or block equipment.
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公开(公告)号：US20180051533A1
公开(公告)日：2018-02-22
申请号：US15680986
申请日：2017-08-18
Applicant: ConocoPhillips Company
Inventor： Zachary L. ZBRANEK , Charles COLPITT , James G. NANNEY , Matthew L. WHITE
IPC: E21B33/134
CPC classification number: E21B33/134 , E21B17/14 , E21B33/16
Abstract: By incorporating a dissolvable or degradable material into the wiper dart and/or float equipment, a fluid can be pumped during the cement phase (or spotted by other means) to begin degradation of the dissolvable material. Once the material is dissolved, a flow path is exposed, allowing communication to the backside or formation of the wellbore through the plug set and shoe track.
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