Adv PropPop

8/18/2019 Adv PropPop

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FloGrid User Course Volumetrics/Si

Basic Property Population

What is Property Population?WorkflowsSteps

Set-upInputLumpingAlgorithmsSearch RangePartial Population

Exercise


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Property Population

What is it?Mechanisms use to istri!ute petrophysicalproperties in a corner point gri

Why o we nee to o it?Spacial istri!ution " #eterogeneity$etermine uncertainty of mo elIntegrate ifferent ata sources

Why so many ifferent metho s an algorithms?Answer epen ent$ata epen ent


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%ypical Re&uirements

'orner Point (riLithotype ata

)*amples+ Lithology log, 'LA. log, Porosity log withcutoffs to efine reser/oir0non reser/oir

Petrophysical ata Porosity, critical water saturation, intrinsic permea!ility1 eri/e log2, etc


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Property Population Workflows

Workflow to populate entire gri +Populate on a 3nit per 3nit !asisIn each unit, first istri!ute lithotypes

4lu/ial5!6ect Simulation, Se&uential In icator Simulation

7e*t, focus on the istri!ution of petrophysical ata on alithotype per lithotype !asis

Many stochastic " eterministic algorithms a/aila!le


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Property Population Workflows

Workflow for partial population of properties+Mo ify e*isting properties with new information3se a ifferent algorithm

'opy the property gri you wish to mo ifyI entify the area you wish to populate in 1e*amples+ particularfault !lock, k layer, !oun ary " 5I in the 8$ /iewer2

Populate petrophysical ata in the esire area Set output mask to in icate the area in/estigate a!o/e


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Property Population Steps

Definename &

property tobe gridded

Define datato be used Lump data

Definealgorithm to

be used

Define ifoutput is tobe partial

population

Modifysearch

range (ifnecessary)

6


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Set-up Property Population Run

9Population Parameter Set: allows for !atch processing

$efine each population process, run in !atch

'an populate in more than ; 3nit at a timeProperty (ri s automatically inherit characteristics of theproperty type they are set as, ie Lithotype will !e an integer


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Input $ata

Primary Input is the ata populateSecon ary ata is use to gui e the population

$epen s upon algorithm chosen$ata sources+

Logs, 8$ Property (ri s, Maps, Scatter Set, Seismic 'u!e


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#istogram %ool for $ata Analysis


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Borehole Intersections

Since cell corner points onot fall on the well location, well logs may nee to !eshifte to match the gri

Steep slopes " largecells will cause largeshiftsBoth top " !ottomsurface intersectionsmay nee shifts of

ifferent amounts'an !e /iewe " compareto original log with the Well'orrelation 'an/as

Cell Corner Points

op of porosity! "ant thisportion ta#en intoaccount "henpopulating


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Lumping

Input ata can ha/e many /alues per gri cellLumping prepares the input ata for population !y9a/eraging: to one /alue per gri cellLumpe logs can !e /iewe in the Well 'orrelation 'an/as


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$eterministic Algorithms

$eterministic+ cell /alues are calculate using a function$istance to 7earest 7eigh!or, 'onstant Assignment,7earest 7eigh!or, In/erse $istance5r inary


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Stochastic Algorithms

Stochastic+ cell /alues are calculate using a function,howe/er, once calculate , a cell /alue may !e consi ere9har ata: thus ha/e an effect on the /alues o!taine innear!y cells= %he or er that cells are sol/e is ran om=

Se&uential (aussian Simulation, Se&uential (aussian'osimulationSe&uential In icator Simulation, %runcate (aussianSimulation, 4lu/ial 5!6ect Simulation


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ariogram %ool

A /ariogram is arepresentation of thepre icta!ility of theinput parameter in >. "

$eri/e an e*perimental/ariogram irectly frominput ata Sa/e a /ariogram anreuse it


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Search Range

%he search range is algorithm " /ariogram epen ent4lo(ri automatically sets the range3ser can mo ify if necessary


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Partial Population Set-up

95utput Mask: gui es which cells information is populate into'urrent or %emplate Property (ri


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)*ercise @ Property Population

$ata+ clou spin !y mapsSet-up PopulationLoa Primary $ata Lump Primary $ata 'hoose Se&uential (aussian Algorithm'hoose Partial Population to San s in 'LA. Property (ri

'reate Multiple Reali ations of Porosity$isplay " Replace 7ull alue 'ells'reate Permea!ility using 'orrelations

$


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)n of Mo ule

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