Schlumberger Eclipse Tutorial: How to make data file, Basic case for tutorial

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Schlumberger Eclipse enables model development through GUI interface as well as data file can be created by own by following steps. Data file is mostly used in industry because of it flexibility and it's easy to understand. Only you need is notepad in which all of work is done and this files is saved to extension supported by Eclipse simulator.

Structure of inputting data is as follows

 SECTION

KEYWORD

 ITEMS

 "--" are used for comments, and simulator will not read any thing which has this sign in start of line. so we can you these comments for our own unndertsanding.

 "/" is for termination or end of key word or item.

" * " is for skipping any item in between.

Structure of Data File

A data file contains sections
RUNSPEC
GRID
EDIT (Optional)
PROPS
REGIONS (Optional)
SOLUTION
SUMMARY
SCHEDULE



RUNSPEC


 In this section we specify model, define its name, phases of fluids in the model, grid dimensions, no wells, regions etc.
Syntax
RUNSPEC

TITLE
3D 2-Phase

--  Number of Cells
-- NX NY NZ
-- -- -- --
DIMENS
5 5 3 /


-- Phases
OIL
WATER


-- Units
FIELD

-- Maximum well/connection/group values
-- #wells #cons/w #grps #wells/grp
-- ----- ----- ----- ------
WELLDIMS
2 3 2 1 /
-- Maximum number of Saturation (Relative Permeability) table

-- TABDIMS
-- 2/


-- Unified output files
-- to Put all output files in one file

UNIFOUT


-- Simulation Start Date
START
1 JAN 2001/
--


 GRID

This Section is to build the reservoir grids . grids can be build by defining no of grids in x, y, z direction and dimension of each grid and the stactic properties such as porosity permeability, net to gross.

Syntax

GRID

-- Size of Each cell in X direction
DX
75*500/


-- Size of each cell in Y direction 
DY
75*500/

-- Size of Each cell in Z direction

DZ

 75*50/


--  TVDS of top Layer only
-- X1 X2 Y1 Y2 Z1 Z2
-- -- -- -- -- -- --
BOX
1 5 1  5 1 1/


TOPS
25*8000/

ENDBOX

-- Permeability in X, Y, Z directions for each cell

PERMX
25*200 25*1000 25*200/

PERMY
25*150 25*800 25*150/

PERMZ
25*20 25*100 25*20/


-- Porosity of each cell

PORO
75*0.2/

-- Output File with geometry and  rock Properties (.INIT)
INIT


--

 Grids can either be  imported if binary file is available with extension, ''.GRIDECL'' generated from petrel.
Syntax
IMPORT
FILENAME.GRIDECL/

If grids in form of ascii are available in extension ".INC" 

 Syntax
INCLUDE 
FILENAME.INC/


PROPS

This section is for defining the properties of fluid such as PVT properties and density, fluid-rock such as relative permeability data and rock compressibility.

 Syntax

 PROPS

--densities in lb/ft3
-- oil Water Gas
-- -- -- --
DENSITY
49 63 0.01/


-- PVT Dta for Dead Oil
-- P Bo Vis
-- -- -- --

PVDO
300 1.25 1.0
800 1.20 1.1
6000 1.15 2.0/

-- PVT data Water
-- P Bw Cw Vis Viscosibility
-- -- -- -- -- --
PVTW
4500 1.02 3e-06 0.8 0.0/

-- Rock Compressibility
-- P Cr
-- -- --
ROCK
4500 4e-06 /

-- Water and oil Relative Permeability and capillary Pressure
-- Sw Krw Kro Pc
-- -- -- -- --
SWOF
-- for Permeability =100 mD

 0.15 0.0 0.9 4.0
0.45 0.2 0.3 0.8
0.7 0.4 0.1 0.2
0.8 0.55 0.0 0.1 /

-- for Permeability =200 mD

 0.25 0.0 0.9 4.0
0.5 0.2 0.3 0.8
0.7 0.4 0.1 0.2
0.8 0.55 0.0 0.1 /
--

SOLUTION



Model initialization is very important step here model condition at zero time is defined.

 Syntax

 SOLUTION

-- Initial equilibrium condition
-- Datum Pi@DatumWOC Pc@WOC
-- -- -- -- --
EQUIL
8075 4500 8200 0/


--  Output Restart file for t=0(.UNRST)
-- Restart file  Graphics
-- For init cond only
-- ------------ ----
RPTRST

BASIC=2 NORST=1/



SUMMARY


in this section we define the keywords for the results we want generate from this model.


Syntax
SUMMARY

-- Field average Pressure

FPR
-- Bottom hole pressure of all wels

WBHP
PROD
INJ/

--  field oil production rate
FOPR

-- field Water production rate

FWPR

--  fiels oil production total


FOPT

-- field water production total

FWPT



-- Water cut in PROD

WWCT
PROD/

-- CPU Usage
TCPU

-- Create Excel readable Run Summary file (.RSM)


EXCEL





SCHEDULE

this the section for defining the Well, their location, flow rate and control limits and type of fluid Producing /Injecting.

 Syntax

SCHEDULE



-- output to restart file for t>0 (.UNRST)

-- Restart file Graphics

-- Every Step Only

-- ----------- --------


RPTRST

BASIC=2 NORST=1/


-- Location of Wellhead and pressure gauge

-- Well Well Location BHP Perf.

-- -- -- -- -- --


WELSPECS
PROD G1 1 1 8000 OIL/
INJ G2 5 5 8000 WATER/
/

-- Completion Interval
-- Well Location Interval Status Well
-- Name I j k1 k2 0 or S ID
-- ---- -- -- -- -- ------ -----

COMPDAT
PROD 1 1 1 3 OPEN 2* 0.6667/
INJ 5 5 1 3 OPEN 2* 0.6667/
/

-- Production Control
-- Well Status control Oil Water Gas Liq Resv BHP
-- Name Mode Rate Rate Rate Rate Rate lim
-- -- -- -- -- --- --- --- --- ---
WCONPROD
PROD OPEN LRAT 3* 10000 1* 2000/

/

-- Injection Control
-- Well Fluid Status control Surf Resv Voidage BHP
-- Name Type Mode Rate Rate frac flag lim
-- -- -- -- -- -- --- --------- ----

WCONINJ
INJ WATER OPEN RATE 11000 3* 20000/
/

-- Number and size (days) of timesteps

TSTEP
10*200/

END

How to save data file

Complete data file syntax is available here and i would recommend  that one should write every thing by own and see model description in Heriot Watt Reservoir simulation book Chapter 3. After writting all the inputs of data file save it with name without any space such as TUTA.DATA, note that ".DATA" is extension for data file and simulator accepts only file with this extension.  






--This syntax has been taken from book of reservoir simulation 
--Heriot Watt University Chapter 3
-- TUT1A.DATA
-- Base Case for tutorial
-- by Petro-Blog
-- 
--=====================================================================
RUNSPEC

 TITLE
3D 2-Phase

 -- Number of Cells
-- NX NY NZ
-- -- -- --
DIMENS
5 5 3 /
-- Phases
OIL
WATER
-- Units
FIELD

 -- Maximum well/connection/group values
-- #wells #cons/w #grps #wells/grp
-- ----- ----- ----- ------
WELLDIMS
2 3 2 1 /
-- Maximum number of Saturation (Relative Permeability) table

 -- TABDIMS
-- 2/
-- Unified output files
-- to Put all output files in one file

 UNIFOUT
-- Simulation Start Date
START
1 JAN 2001/
--==========================================================================

 GRID

 -- Size of Each cell in X direction
DX
75*500/
-- Size of each cell in Y direction 
DY
75*500/

 -- Size of Each cell in Z direction

 DZ

 75*50/
-- TVDS of top Layer only
-- X1 X2 Y1 Y2 Z1 Z2
-- -- -- -- -- -- --
BOX
1 5 1 5 1 1/
TOPS
25*8000/

 ENDBOX

 -- Permeability in X, Y, Z directions for each cell

 PERMX
25*200 25*1000 25*200/

 PERMY
25*150 25*800 25*150/

 PERMZ
25*20 25*100 25*20/
-- Porosity of each cell

 PORO
75*0.2/

 -- Output File with geometry and  rock Properties (.INIT)
INIT

 --========================================================================

 PROPS

 --densities in lb/ft3
-- oil Water Gas
-- -- -- --
DENSITY
49 63 0.01/
-- PVT Dta for Dead Oil
-- P Bo Vis
-- -- -- --

 PVDO
300 1.25 1.0
800 1.20 1.1
6000 1.15 2.0/

 -- PVT data Water
-- P Bw Cw Vis Viscosibility
-- -- -- -- -- --
PVTW
4500 1.02 3e-06 0.8 0.0/

 -- Rock Compressibility
-- P Cr
-- -- --
ROCK
4500 4e-06 /

 -- Water and oil Relative Permeability and capillary Pressure
-- Sw Krw Kro Pc
-- -- -- -- --
SWOF
-- for Permeability =100 mD

 0.15 0.0 0.9 4.0
0.45 0.2 0.3 0.8
0.7 0.4 0.1 0.2
0.8 0.55 0.0 0.1 /

 -- for Permeability =200 mD

 0.25 0.0 0.9 4.0
0.5 0.2 0.3 0.8
0.7 0.4 0.1 0.2
0.8 0.55 0.0 0.1 /
--========================================================================

SOLUTION

 -- Initial equilibrium condition
-- Datum Pi@DatumWOC Pc@WOC
-- -- -- -- --
EQUIL
8075 4500 8200 0/


-- Output Restart file for t=0(.UNRST)
-- Restart file Graphics
-- For init cond only
-- ------------ ----
RPTRST
BASIC=2 NORST=1/

 --=======================================================================

SUMMARY

 -- Field average Pressure

 FPR
-- Bottom hole pressure of all wels

 WBHP
PROD
INJ/

 -- field oil production rate
FOPR

 -- field Water production rate

 FWPR

 -- fiels oil production total
FOPT

 -- field water production total

 FWPT

-- Water cut in PROD

 WWCT
PROD/

 -- CPU Usage
TCPU

 -- Create Excel readable Run Summary file (.RSM)

 EXCEL

 --=======================================================================
SCHEDULE
-- output to restart file for t>0 (.UNRST)
-- Restart file Graphics
-- Every Step Only
-- ----------- --------

 RPTRST
BASIC=2 NORST=1/

 -- Location of Wellhead and pressure gauge
-- Well Well Location BHP Perf.
-- -- -- -- -- --
WELSPECS
PROD G1 1 1 8000 OIL/
INJ G2 5 5 8000 WATER/
/

 -- Completion Interval
-- Well Location Interval Status Well
-- Name I j k1 k2 0 or S ID
-- ---- -- -- -- -- ------ -----

 COMPDAT
PROD 1 1 1 3 OPEN 2* 0.6667/
INJ 5 5 1 3 OPEN 2* 0.6667/
/

-- Production Control
-- Well Status control Oil Water Gas Liq Resv BHP
-- Name Mode Rate Rate Rate Rate Rate lim
-- -- -- -- -- --- --- --- --- ---

WCONPROD
PROD OPEN LRAT 3* 10000 1* 2000/

 /

 -- Injection Control
-- Well Fluid Status control Surf Resv Voidage BHP
-- Name Type Mode Rate Rate frac flag lim
-- -- -- -- -- -- --- --------- ----

 WCONINJ
INJ WATER OPEN RATE 11000 3* 20000/
/

 -- Number and size (days) of timesteps

 TSTEP
10*200/

 END

After Saving this data file proceed to next step how to run this data file or Model in simulator.

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