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    Electric heat and NGL startup for heavy oil
    72.
    发明授权
    Electric heat and NGL startup for heavy oil 有权

    公开(公告)号：US10584569B2

    公开(公告)日：2020-03-10

    申请号：US15955125

    申请日：2018-04-17

    Applicant: CONOCOPHILLIPS COMPANY

    Inventor： Siluni L. Gamage ,  T. J. Wheeler ,  Robert S. Redman

    IPC: E21B43/24

    Abstract: A method starts wells with electrical downhole heating and injects solvent(s) or NGL mixes as a preconditioning for a steam injection process. The downhole electrical heating and solvent injection recovers oil and reduces the reservoir pressure. Once oil has been recovered for a period of time and the operating pressure and temperature has been reduced, steam or steam and solvent(s) may be injected to produce high oil recoveries at faster production rates than downhole heating or downhole heating and solvent(s) injection alone. The method reduces heat losses due to steam injection at lower pressure and temperature and therefore, improves efficiency and lowers operating costs. Operating at lower pressure and temperature also reduces the risk of melting the permafrost and consequent well failure issues.

    Depth/orientation detection tool and methods thereof
    74.
    发明授权
    Depth/orientation detection tool and methods thereof 有权

    公开(公告)号：US10526887B2

    公开(公告)日：2020-01-07

    申请号：US15251057

    申请日：2016-08-30

    Applicant: ConocoPhillips Company

    Inventor： Curtis G. Blount

    IPC: E21B47/00 ,  E21B43/116 ,  E21B47/09 ,  E21B43/119 ,  E21B47/024 ,  E21B47/04

    Abstract: Methods and systems for depth and radial orientation detection are provided. Methods for determining the depth or radial orientation of one or more downhole components include the steps of providing a target mass and a using a detection device for detecting the depth and/or orientation of the target mass. In some cases, the target mass is initially nonradioactive and then, after installing the target mass downhole, it may be irradiated to form a relatively short-lived radioactive target mass, which may then be detected with a radiation detector. In this way, the target mass acts as a depth or radial orientation marker. Where the target mass is situated downhole in a known radial relationship to another downhole component, the radial orientation of the other downhole component may be deduced once the radial orientation of the target mass is determined. Advantages include higher accuracies and reduced health, safety, and environmental risks.

    Blowdown pressure maintenance with foam
    75.
    发明授权
    Blowdown pressure maintenance with foam 有权

    公开(公告)号：US10472942B2

    公开(公告)日：2019-11-12

    申请号：US15625493

    申请日：2017-06-16

    Applicant: CONOCOPHILLIPS COMPANY ,  Cenovus Energy Inc.

    Inventor： Amos Ben-Zvi ,  Jason Abbate ,  Thomas J. Wheeler ,  Siluni L. Gamage ,  Harbir Chhina ,  Alexander E. Filstein ,  Brent D. Seib

    IPC: E21B43/24 ,  C09K8/594 ,  E21B43/16 ,  E21B43/18

    Abstract: A method and system in which foams are used (instead of, or in addition to, NCG) to maintain pressure in a mature chamber during blowdown operations of a SAGD process or other enhanced oil recovery process. The foam occupies the depleted void space within the mature chamber after injection ceases, maintaining pressure, and improving blowdown performance. This use of the foam in the method and system also improves the performance of less mature chambers that are being operated at higher pressure adjacent to the mature chamber in blowdown. Foaming agents, such as metal carbonates, bicarbonates, and hydroxides, surfactants or any other colloidal foams, aerosols, hydrosols, emulsions or dispersions can be utilized. The method and system can be utilized in conjunction with other known art, such as heat scavenging in the chamber, or enhanced oil recovery utilizing foams, to displace oil in the chamber.

    Target-oriented process for estimating fracture attributes from seismic data
    77.
    发明授权
    Target-oriented process for estimating fracture attributes from seismic data 有权

    公开(公告)号：US10386514B2

    公开(公告)日：2019-08-20

    申请号：US14808785

    申请日：2015-07-24

    Applicant: CONOCOPHILLIPS COMPANY

    Inventor： Stephen K. Chiu

    IPC: G06F19/00 ,  G01V1/30

    Abstract: Method for characterizing a subterranean formation includes: obtaining azimuth-dependent observed travel-times from measured seismic data; inverting observed travel-times to calculate a fracture attribute selected from the group consisting of: magnitude and orientation; identifying presence of fracture based on calculated fracture magnitude; identifying fracture direction based on calculated fracture orientation; calculating predicted travel-times; calculating differences or residual errors between observed travel-times and predicted travel-times; identifying potential fault locations based on residual errors; inverting fracture magnitude and orientation using travel-time differences between a shallower horizon to a deeper horizon of interest to minimize overburden artifacts.

    System and method for sealing multilateral junctions
    78.
    发明授权
    System and method for sealing multilateral junctions 有权

    公开(公告)号：US10385654B2

    公开(公告)日：2019-08-20

    申请号：US15933819

    申请日：2018-03-23

    Applicant: CONOCOPHILLIPS COMPANY

    Inventor： John Gibb

    IPC: E21B33/13 ,  E21B33/12 ,  E21B36/02 ,  E21B36/04 ,  E21B41/00 ,  E21B36/00

    Abstract: A system and method for sealing a multilateral junction in an oil well is described. Molten material, such as a eutectic or non-eutectic alloy, flows into the junction area and forms a durable seal upon cooling. An expanding alloy may be utilized, which expands upon solidification and which has a melting temperature that is higher than the maximum anticipated well temperature. The alloy is placed within a cavity in the well and held at a temperature above the melting point of the alloy, after which the alloy is cooled down to the ambient well temperature and solidifies and expands within the cavity.

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