Japan CO 2 Geosequestration in Coal Seams Project Masaji Fujioka

- JCOP - 

Japan CO 2 

Geosequestration in Coal 

Seams Project 

Masaji Fujioka 

Japan Coal Energy Center (JCOAL) 

4th International Forum- Coal-Seq IV, 

November 9-10, 2005, Denver

Organization 

○Laboratory Tests 

・Hokkaido Univ. 

・Akita Univ. 

・Waseda Univ. 

・Kyoto Univ. 

・RITE 

Ministry of Economy, 

Trade and Industry 

(METI) 

General Environmental Technos Co. Ltd. 

(KANSO) 

(Consignment 

) 

○Pilot Test 

・JCOAL 

○Field Monitoring 

・NPO Thinktank Kyoto 

Institute of Natural History 

○Capture 

(Financial 

Support) 

・Mitsubishi Heavy Metal 


November 9-10, 2005, Denver 

・Kansai Electric Power 

Committee/ 

WG 

○Economical 

・KANSO

JCOP Development Schedule 

Japanese Financial Year 2002 2003 2004 2005 2006 2007 2008 

Extended 

Phase I (fundamental) 

Storage Capacity 

Development of Simulation Model 

Pilot Test 

Well Drilling 

Coring 

Gas Content 

Well Test 

Huff- Puff Test for IW- 1 

Production Test 

Injection Test at IW- 1 

Hydraulic Fracture for IW- 1 

Breakthrough 

Economical Evaluation 

PHASE II (Demonstration) 



FIELD TEST SITE 

●YUBARI Faults 

オ 

ランナイ 

断 

層 

6.00 

5.00 

ペ 

ンケマヤ 

断 

層 

ロ 

ー 

ソ岩 

ク 

第 

二 

衝 

上 

断 

層 

Test Site 



PW -1 

IW -1 

ペ 

ン 

ケ 

マ 

ヤ 

第 

一 

衝 

上 

断 

層 

5.00 

6.00

PW-1 

IW-1 

Cross Section 

Geological Condition 

Formation 

Horonai 

Yubari 

(Main Coal 

seams) 

Upper coal 

seam 

Main coal 

seam 

Lower coal 

seam) 

Horokabet 

su 

Depth 

(Interval) 

0.00~ 

678.00m 

(678.00m) 

678.00~ 

916.20m 

(238.20m) 

742.00~ 

743.75m 

851.20~ 

853.70m 

890.08~ 

896.30m 

916.20~ 

932.60m 

(16.40m) 



Lightfaces 

Dark gray ~ Dark brownish 

Mudstone 

Dark bluish med-fine Sandstone ~ 

Coarse Sandstone (with Glauconitic) 

Dark brownish Mudstone 、 Dark 

gray Siltstone 

Bluish gray Sandstone ~ very fine 

Sandstone 

Coal、coaly shale、Black shale 

Appearance thick(1.01/1.75)、Net 

thick(0.87/1.52) 

Appearance thick(2.50/2.50) 、 Net 

thick(2.35/2.35) 

Appearance thick(5.32+/6.22)、 

Net thick(4.83+/5.64) 

Gray Mud stone

Conceptual Design of the Field Test 

Production Well 

(P W-1) 

CO2 Storage Tank 

Injection Well 

(IW-1) 

PC Pump 

Vaporizer 

CO2 

CH4 

H2O 

Coal seams 

CH4 

H2O 

CH4 



CH4 

CH4 

H2 

O 

CH4 

H2 

O 

CH4 



Parameter 

Unit 

Lower 

Yubari 1 

Lower 

Yubari 2 

Lower 

Yubari 3 

Lower 

Yubari 4 

Lower 

Yubari 5 

Lower 

Yubari 6 

Lower 

Yubari 7 

Lower 

Yubari 8 

Ave. or 

Total 

Top Depth m 890.08 890.23 891.57 892.33 892.75 893.25 895.50 896.00 

Bottom Dep m 890.23 890.50 891.72 892.50 892.95 893.47 895.62 896.15 

Thickness m 0.15 0.17 0.15 0.17 0.20 0.22 0.12 0.15 1.33 

Sample Weight g 895.0 1,132.0 946.0 911.0 1,211.0 978.0 897.0 958.0 991.0 

Measured Gas Volume cm 3 /g 13.0 15.6 13.4 15.6 12.1 11.0 16.2 16.3 14.2 

Lost Gas Volume cm 3 /g 4.5 8.3 4.5 5.4 4.7 7.5 3.9 3.6 5.3 

Residual Gas Volume cm 3 /g 2.4 3.1 2.6 2.8 2.6 2.7 2.7 3.4 2.8 

In-Situ G as C ontent cm 3 /g 19.9 27.0 20.5 23.8 19.4 21.2 22.7 23.3 22.2 

Moisture wt f 0.009 0.008 0.009 0.009 0.009 0.009 0.008 0.010 0.0089 

Ash wt f 0.148 0.045 0.044 0.016 0.056 0.038 0.027 0.018 0.0490 

Volatile Matter wt f 0.354 0.399 0.387 0.380 0.364 0.393 0.384 0.382 0.3804 

Fixed Carbon wt f 0.489 0.548 0.560 0.595 0.572 0.560 0.581 0.590 0.5619 

Non- Combustible wt f 0.0005 0.0004 0.0005 0.0004 0.0002 0.0003 0.0005 0.0002 0.0004 

Combustible wt f 0.0025 0.0024 0.0016 0.0019 0.0019 0.0017 0.0017 0.0028 0.0021 

Total wt f 0.0030 0.0028 0.0021 0.0023 0.0021 0.0020 0.0022 0.0030 0.0024 

Summary of 

Lower Yubari 

Seam Gas 

Content & 

Characterizatio 

n Data 

Air- Dry Calorific Value J/ g 30,600 34,740 34,530 35,710 33,450 34,990 35,160 35,330 34,314 

Mosit, Ash- Free Cal. J/ g 35,592 36,086 35,794 35,964 35,115 36,045 35,847 35,618 35,758 

Ash wt f 0.1480 0.0450 0.0440 0.0160 0.0560 0.0380 0.0270 0.0180 0.0490 

Carbon wt f 0.7290 0.8320 0.8320 0.8520 0.8190 0.8360 0.8410 0.8550 0.8245 

Hydrogen wt f 0.0556 0.0656 0.0651 0.0665 0.0625 0.0647 0.0672 0.0647 0.0640 

Oxygen wt f 0.0491 0.0372 0.0385 0.0447 0.0429 0.0411 0.0452 0.0407 0.0424 

Nitrogen wt f 0.0158 0.0178 0.0188 0.0189 0.0177 0.0185 0.0179 0.0188 0.0180 

Comb. Sulphur wt f 0.0025 0.0024 0.0016 0.0019 0.0019 0.0017 0.0017 0.0028 0.0021 

Vitrinite vol frac 0.851 0.894 0.898 0.900 0.928 0.898 0.906 0.926 0.9001 

Exinite vol frac 0.044 0.053 0.044 0.061 0.027 0.050 0.065 0.041 0.0481 

Inertinite vol frac 0.019 0.028 0.034 0.030 0.014 0.031 0.014 0.023 0.0241 

Mineral- Matter vol frac 0.086 0.025 0.024 0.009 0.031 0.021 0.015 0.010 0.0276 

Mean Vit. Reflectance % 0.75 0.74 0.75 0.79 0.81 0.75 0.78 0.80 0.77 

Crusible Swelling Index - 7.0 7.5 8.0 9.0 8.5 8.0 9.0 9.0 8.3 

Total wt f 0.095 0.013 0.145 0.101 0.157 0.172 0.066 0.018 0.096 

Moisture Holding Cap. wt f 0.016 0.023 0.022 0.018 0.022 0.021 0.016 0.025 0.020 

Equilibrium Moisture wt f 0.012 0.012 0.013 0.013 0.013 0.011 0.012 0.011 0.012 



True Density g/cm 3 1.407 1.330 1.318 1.314 1.346 1.328 1.310 1.340 1.337

Relationship between Gas Content & Organic Content 

G as C ontent, 

ml/g 

30 

25 

20 

15 

10 

5 

0 

Gas Composition 

G as C ontent vs.O rgan ic Content 

y = -1.0197x + 24.859 

R 2 = 0 .9 9 9 

0 5 10 15 20 

Ash + M oistu r C o n te n t (% ) 

Methane 

Ethane+ 

Propane 

n/ i- 

Butane Nitrogen CO2 

LS 1 96.58 1.48 0.06 0.19 1.68 

LS 2 98.22 0.08 0.00 0.15 1.55 

LS 3 94.42 1.02 0.10 1.60 2.85 

LS 4 94.60 0.99 0.06 1.61 2.73 

LS 5 97.89 0.07 0.00 0.37 1.66 

LS 6 95.76 1.17 0.06 0.31 2.70 

LS 7 96.97 1.13 0.06 0.30 1.55 

LS 8 98.33 0.06 0.00 0.06 1.55 

Average 96.60 0.75 


0.04 0.57 2.03 


Sorption Isotherm Relationship 

Dry,A sh-Free G as Storage 

C apacity (cm 3/g) 

45 

40 

35 

30 

25 

20 

15 

10 

5 

0 

Low er YubariIsotherm and G as C ontent 


CH4 

Gas Con 

0 50 100 150 

P ressure,B ar 



Ported B ullP lug 

Facilities at Injection Pit 

PROVision 

P1,P2,P3,P4,T1 

P3 

Wing valve 


High pressure hose 

M aster valve 

21M P a:wellhead tree m ax. 

P ressure rating 

Tubing hanger 


Injection line 

TEK surface cable 

P4 

12-1/4"bit 

9-5/8"C SG (ID:226.6m m ) 

7/16"-7conductor 

arm ored cable 

Collar Protector 


7"C SG (ID:161.8mm) 

Pump & Vaporizer Skid 

8-1/2"bit 

660m 

M ore-T(878m ) 

Packer(880m ) 

liner hunger:610m 

Gas(CH4) 

4-1/2"C SG (ID:103.9mm) 

Injector Wellhead 

Fullhole C em enting 


G roundw ater 

Pump 

Injection Well 

TD:932.6m M D 



CO 2 Storage Tank (15000L)

Production Well 

12ー1/4″Bit(311.2m m ) 

depth :0~106.50m 

9ー5/8″CSG 

8ー1/2″Bit(215.9m m ) 

depth:106.50~856.00m 

Kic k o ff @ 420m 

Water line 

6ー1/4″Bit (158.8m m ) 

8ー1/2″Under Ream er (215.9mm) 

Driling depth:856.00~930.00m 

Enlarged depth:872.50~930.00m 

2 degree deviation at every 

30m driling 

Gas line 

Driling Length:930m 

VerticalD e pth :907m 

FinalD e viation:2 4 .17゜ 

4ー1/2″CSG (802.86~927.50m ) 

Slotted Liner :833.98~844.29m 

864.90~916.51m 



Measuring Devices Schematic at Production Pit 

Gas Reliese 

From Annulus 

(Gas line) 

Separator 

Thermometer 

Ultrasonic Gas 

Flowmeter 

From Tubing Pipe 

(Water line) 

Water Flowmeter 

Pro More 

CH4 

Cell Phone 

Data Logger 

Air Pressure 

Atm. Temperature 

Atm. Humidity 


Gas Sampling pump 

Gas chromatograph 



Step Rate Test (Nov. 2003) 

•Fracture Opening Pressure: 

15,800kPa @ 2.4L/min. 

•Fracture Closing Pressure: 

10,900kPa 

@2.1Hrs after Shut-in 

Step Injection Rate (L/min.) Duration (min.) 

1 2.0 30 

2 4.0 30 

3 6.0 30 

4 8.0 60

Well Test Data Nov. 2003 Sep. 2004 Nov. 2004 

Data Type 

Summary of Well Test Results 

Water 

Injection 

Production 

Build-up 


Injection 

Fall-off 

Average reservoir pressure (kPa) 10,214 9,926 9,979 

Pressure depth (m) 892.5 892 892 

Pressure Gradient to surface 

(kPa/m) 

11.0 11.07 

Effective conductivity to gas (md-m) 0.0122 0.512 

Effective conductivity to water (mdm) 

5.24(inner) 

9.36(outer) 

0.286 

Effective permeability to gas (md) 0.00191 0.08 

Effective permeability to water (md) 

0.93(inner) 

1.66(outer) 

0.0446 

Absolute permeability (md) 0.08 0.08 

Dimensionless wellbore storage 

coefficient 

16.23 13 180 

Skin Factor 0.24 4.2 1.3 

Flow efficiency (%) 95 56 83 

Radius of investigation (m) 40.62 21 59

CO2 Injection Test (Nov. 

2004) 

Nov 2004 CO2 INJECTION TEST 

Injectivity (m3/ D- kPa), 

Injection Mass (t/ d) 

3 

2.5 

2 

1.5 

1 

0.5 


Injected 

Injectivity 

BHP 

16.00 

15.50 

15.00 

14.50 

14.00 

13.50 

0 

13.00 

11/ 9/ 2004 11/ 16/ 2004 11/ 23/ 2004 

Date 

BHP (MPa) 

Water (m3/ d), 

CO2 Injection Mass (t/ d) 

3.0 

2.5 

2.0 

1.5 

1.0 

0.5 

Production Records (Gas/ Water) & Injection Mass 

W ater(m3) 

CO2 Injected 

G as(m 3) 

350 

300 

250 

200 

150 

100 

50 

Gas Production Rate (m3/ d) 

0.0 



10/1/04 10/15/04 10/29/04 11/12/04 11/26/04 12/10/04 

Date 

0

CO2 Temperature and Density Profile 

温度 (℃) 

35 

30 

25 

20 

15 

10 

5 

18 

16 

14 

12 

10 

8 

6 

4 

2 

圧力 (M PaG) 

0 

0 

0 100 200 300 400 500 600 700 800 900 1000 

深度 (m) 

950 

CO2 DENSITY VS. Depth 

T(0) T(22) T(68) P(0) P(22) P(68) 

Density (kg/ m3) 

900 

850 

800 

750 

700 

650 

600 

0 200 400 600 800 1000 



CO2 Injection Test ( 2005) 

Injectivity & Injection Mass 

0.4 

Reference:Nov.2004 Injectivity 

5.00 

4.50 

Injectivity, m3/ D- kPa 

0.3 

0.2 

0.1 

Sep.2005 Injectivity 

2005 Injection Mass 

4.00 

3.50 

3.00 

2.50 

2.00 

CO2 Injection Mass, t/ day 

1.50 

0 

8/26/2005 9/2/2005 9/9/2005 9/16/2005 9/23/2005 9/30/2005 

Date 

1.00 



Gas Volume (m3/ day) 

400 

350 

300 

250 

200 

150 

100 

50 

Production Records 

( 2005) 

Gas Volum e (m 3/day) 

Water Volu m e (m 3 / day) 

C O 2 In jected (T/day) 

Water & Gas Production 

4.0 

3.5 

3.0 

2.5 

2.0 

1.5 

1.0 

0.5 

Water Volume (m3/ d), 

CO2 Injected (t/ d) 

0 

8/ 18 8/ 25 9/ 1 9/ 8 9/ 15 9/ 22 9/ 29 10/ 6 10/ 13 10/ 20 

Date 



0.0

Japan CO 2 Geosequestration in Coal Seams Project Masaji Fujioka

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