Journey of Light

Jian Wang (2015)

Silk Weaving

Janine Wiedel (2015)

Reservoir Performance Evaluation by Cost Effective

Digital Petrophysics Workflows

Bruker Micro_CT user meeting 2016 Luxembourg

Bruker Micro_CT user meeting 2016

WHY? SO?WHAT

?

Bruker Micro_CT user meeting 2016

Digital Rock Analysis promises faster and cheaper RCAL/SCAL

campaigns

Expensive (Hardware and Software) and as a service only

provided by a very small group of specialists.

Only a few Laboratory tests are actually faster than their

conventional equivalent (if you have a leading edge HPC hardware

with MPI/OpenCL codes).

3D models from imaging protocols can be obtained from almost any rock

sample

WHY? SO?WHAT

?

Can we deliver useful reservoir performance information to BBUU

operations using a tabletop micro_CT, available commercial easy to use

software by workflows spanning less than one day per sample?

IMAGING

DIGITAL

PETROPHYSICS

WORKFLOW

Bruker Micro_CT user meeting 2016

• Pilot test on analog sample for protocol accuracy test

• Full deployment on selected prospective intervals

PROCESSING

CHARACTERIZI

NGSkyscan 1272. 90kV, 3um resolution, 10hrs scan. Averaging

Priority

ZA

ZA

Comptom

ricPhotoelect

4

Correlation Length. Is it

representative?

Bruker Micro_CT user meeting 2016

Denoising and Segmentation

• Averaging (Scanning)

• Soft Gaussian

• Adaptative (long search

areas)

• Depeckling white dots

IMAGING

PROCESSING

CHARACTERIZI

NG

DIGITAL

PETROPHYSICS

WORKFLOW

Bruker Micro_CT user meeting 2016

MORPHOMETRY NUMERICAL SIMULATION• Porosity

• Pore Size Distribution

• Connectivity

• Fractal Dimension

• Structure Separation

Bruker Micro_CT user meeting 2016

RESULTSPorosity from Image Analysis: 21,76%

±1,2%

Permeability (kair) from Morphometric Models: 510mD-

722mD

Permeability Tensor from Numerical Simulation

Close “Sibling

Sample”

ɸ=20,7%

K=644,01mD

WHY? SO?WHAT

?

Bruker Micro_CT user meeting 2016

The same protocol was

applied to 10 samples from

different wells but the same

field REV Analysis was conducted

during each test

Close data gave reasonable

agreement (not sibling)

ID Total ɸ ɸ Closest Data Est. κ (mD) FEA κ (mD) κ Closest Data (mD)

1 12,33 15,1 [17,21<κ<28,07] 2,756 29,835

2 31,42 30,3 [174,05<κ<308,80] 2645 455,6

3 18,26 20,6 [45,22<κ<107,8] 6,315 6,325

4 20,53 20,6 [38,28<κ<91,26] 17,14 6,325

5 20,88 26,6 [87,86<κ<152,31] 135,6 79,813

6 24,76 24,3 [79,06<κ<140,25] 586,8 150,631

7 24,05 22,8 [77,99<κ<140,12] 521,3 64,02

8 23,98 21,4 [159,85<κ<245,05] 484 61,401

9 21,33 20,7 [37,80<κ<61,66] 29,82 797,86

10 5,63 18,7 [9,52<κ<30,94] 0,462 1,362

3D Morphometry gave

outstanding RQI typing

Bruker Micro_CT user meeting 2016

CONCLUSIO

NS

The protocol was successfully implemented and useful reservoir behavior

information was delivered to our BBUU. So, it worked.However, apparently it can be further improved at the acquisition stage (1275?)

10mi

n

1hr 10hr

s

κ = 385mD κ = 475mD κ = 430mD

Walk to paradise

garden

W Eugene Smith

(1946)

Let's invent the future