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    RESERVOIR INFLOW MONITORING
    41.
    发明申请
    RESERVOIR INFLOW MONITORING 有权

    公开(公告)号：US20220098975A1

    公开(公告)日：2022-03-31

    申请号：US17483269

    申请日：2021-09-23

    Applicant: Resman AS

    Inventor： Olaf Kristoffer HUSEBY

    IPC: E21B47/11

    Abstract: The invention provides a provides a method and system of estimating an influx profile for at least one well fluid from a reservoir to a producing petroleum well with two or more influx zones or influx locations to a production flow. The method comprises installing at least one tracer source with distinct tracer materials in known levels of the well and transporting tracer molecules from the tracer sources in the well into the reservoir. The method comprises inducing production flow in the well from the reservoir into the well, collecting samples downstream of the two or more influx zones at known sampling times and analysing samples for concentration and type of tracer material from said possible tracer sources. The method comprises calculating contribution of flow from the two or more influx zones based on the analysed concentrations.

    Tracer injections
    42.
    发明授权
    Tracer injections 有权

    公开(公告)号：US10815775B2

    公开(公告)日：2020-10-27

    申请号：US16082646

    申请日：2016-03-07

    Applicant: RESMAN AS

    Inventor： Jon Eric Lauritzen

    IPC: E21B47/11 ,  E21B27/02 ,  E21B43/11 ,  E21B23/01

    Abstract: The invention is a petroleum well tracer injection and monitoring method comprising the steps of providing a one or more curable liquid doped with one or more tracer, arranging said one or more liquid in an intervention liquid injecting tool, running the injection tool into a production tubing in a petroleum well to one or more desired injection position along the tubing, actuating the injection tool to apply one or more portions of the tracer doped liquid at said one or more desired positions, each said portion deposited to form a material deposition at a tubing wall of said tubing, allowing the well to produce and monitoring the tracers in the production flow and a tool to perform the injection.

    METHOD FOR EXTRACTING DOWNHOLE FLOW PROFILES FROM TRACER FLOWBACK TRANSIENTS
    43.
    发明申请
    METHOD FOR EXTRACTING DOWNHOLE FLOW PROFILES FROM TRACER FLOWBACK TRANSIENTS 审中-公开

    公开(公告)号：US20200270985A1

    公开(公告)日：2020-08-27

    申请号：US16871939

    申请日：2020-05-11

    Applicant: RESMAN AS

    Inventor： Fridtjof NYHAVN

    IPC: E21B47/11 ,  E21B43/14 ,  E21B27/02 ,  G01V9/00

    Abstract: A method of estimating an influx profile for at least one well fluid to a producing petroleum well with two or more influx zones or influx locations to a production flow, wherein the well comprises tracer sources with distinct tracer materials in known levels of the well, at least one of said tracer sources arranged downstream and exposed to the fluids in at least one of said influx zones, wherein each said tracer source has an even release rate to said well fluid, characterised in that one or more of the tracer sources is provided in one or more delay chambers for ventilating out fluid with leaked tracer material at a time constant which is significantly longer than the diffusion rate from the tracer source to the well fluid, wherein the method further comprises: providing samples, the samples collected from the production flow at a location downstream of the tracer sources during a time period in which the tracer transient is detectable at the downstream location, analysing said samples for concentration and type of tracer material from said possible tracer sources as a function of sampling time or cumulative produced volume; and based on said measured concentrations and their sampling time or cumulative produced volume, calculating said influx volumes.

    Gas well inflow detection method
    44.
    发明授权
    Gas well inflow detection method 有权

    公开(公告)号：US10030507B2

    公开(公告)日：2018-07-24

    申请号：US14782209

    申请日：2014-04-04

    Applicant: RESMAN AS

    Inventor： Fridtjof Nyhavn ,  Erlend Fævelen

    IPC: E21B47/10 ,  E21B43/14 ,  E21B43/16 ,  E21B49/08

    Abstract: A method for detecting or mapping potential influx zones for gas from a geological formation to a gas well with a well head with a valve tree or a choke includes the following steps of: marking the potential influx zones with tracer systems with corresponding unique tracers—filling the gas well form the surface, through the well head with liquid wherein the tracers have affinity to the liquid, producing liquid form the well, consecutively sampling samples from the produced liquid, to analyze the samples to prove possible presence of one or more tracers or even measure the tracers concentrations. By performing the method, one may prove possible influx of a back flow of liquid from the influx zones that one assumes implies the gas pressure and the inflow of a gas form the influx zones.

    ONLINE TRACER MONITORING AND TRACER METER
    46.
    发明申请
    ONLINE TRACER MONITORING AND TRACER METER 审中-公开

    公开(公告)号：US20170370210A1

    公开(公告)日：2017-12-28

    申请号：US15536605

    申请日：2015-12-23

    Applicant: Resman AS

    Inventor： Fridtjof NYHAVN ,  Thomas SPERLE

    IPC: E21B47/10 ,  E21B43/38 ,  G01V15/00 ,  E21B49/08 ,  E21B34/06

    CPC classification number: E21B47/1015 ,  E21B34/06 ,  E21B43/38 ,  E21B49/08 ,  G01V15/00

    Abstract: A tracer method for online monitoring of downhole zonal contributions of oil, condensate, gas, or water mass flux of a production flow in a petroleum production well, includes arranging distinct tracer carrier systems, each in different production zones in said well, the distinct tracer carrier systems arranged for releasing unique tracers to a fluid of the production zones, the tracers having affinity after downhole release to separate phases of oil, condensate, gas, or water, using an online tracer monitor, conducting sampling of tracer concentrations for at least one of the tracers in said zonal mass fluxes at a high sampling rate, based on said concentration values, estimating the corresponding zonal tracer fluxes for each delivery data point and using said one or more estimated zonal mass fluxes to control one or more Petro Technical processes.

    Monitoring of multilayer reservoirs
    47.
    发明授权
    Monitoring of multilayer reservoirs 有权

    公开(公告)号：US09664035B2

    公开(公告)日：2017-05-30

    申请号：US14412040

    申请日：2013-07-01

    Applicant: ResMan AS

    Inventor： Fridtjof Nyhavn

    IPC: E21B47/10 ,  E21B47/00 ,  E21B43/14

    CPC classification number: E21B47/1015 ,  E21B43/14 ,  E21B47/00

    Abstract: A method and system is described for estimating flow rates of fluids from each of separate influx zones in a multilayered reservoir to a production flow (Q) in a well (Wr) in the reservoir, the well having at least two separate influx zones from the multilayer reservoir of known positions along the well, the well being provided with distinct tracer sources with distinct tracer materials of known positions in each of the at least two separate influx zones. Each influx zone is provided with a delay path for a tracer leakout stream flow from that influx zone. The method includes providing a global production flow change for the production flow in the well, establishing tracer concentrations in the production flow of the distinct tracer materials as a function of time, and estimating the production rates from each of the separate influx zones in the reservoir.

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