Construction Details for FutureGen Alliance

Permit Number: IL- 137

- 6A -0004 (Well #4) Page G1of 5



### ATTACHMENT G : CONSTRUCTION DETAILS

Facility Information

Facility Name: FutureGen 2.0 Morgan County CO 2 

### Storage Site

IL -137-6A-0004 (Well #4 )

Facility Contacts: Kenneth Humphreys, Chief Executive Officer,

FutureGen Industrial Alliance, Inc., Morgan County Office, 73 Central Park Plaza East, Jacksonville, IL 62650, 217-243-8215

L ocation of Injection Well: Morgan County, IL; 26−16N−9W; 39.80111oN and 90.07544 oW

Borehole and Casing and Tubing Program for the Horizontal CO 2 

### Injection Wells

Casing String Casing

Depth, TVD (ft bgs) Casing

Depth, MD (ft bgs) Borehole

Diameter (in.) Casing

Outside

Diameter (in.) Coupling

Outside

Diameter (in.) Casing Material

(weight/grade/ connection) String

Weight

in Air (lb)

Conductor 140 140 30 24 25.198 140 lb/ft, K

- 55, MTC 19,600

Surface 570 570 20 16 17 84 lb/ft, K

- 55, BTC 47,880

Intermed. 0

- 3,150 3,150 14.75 10.75 11.25 51 lb/ft, K

- 55, BTC 160,650
Long String 0

- 3,398 0

- 3,400 9.5 7 7.656 29 lb/ft, N

- 80, BTC 98,600

3,398

- 4,030 3,400

-

7,00 4 7 7.669 29 lb/ft, P

- 110,

Premium ( a ) 91, 466

Tubing 3,819.1 3,9 49 NA 3.5 4.5 9.3 lb/ft, N

- 80, EUE 36,270
( a ) A corrosion

- resistant alloy such as 13 Cr (13 percent chromium) having strength properties equal to or greater

than 29

- lb/ft P

- 110 and having premium connections will be used for this section . Perforated interval. EUE = external upset end; TVD = total vertical depth; MD = measured depth.



### Properties of Well Casing and Tubing Materials

Casing String Casing

Material (weight/grade/ connection) Casing

Outside/Inside/

Drift Diameter (in.) Yield

(ksi) Tensile (ksi) Internal (Burst)

Yield (psi) Collapse

(psi) Tension (1,000 lb) Body (B) Joint (J) Compression

(1,000 lb)

Conductor 140 lb/ft, K

- 55,

MTC 24/22.938/22.751 55 95 2,130 530 (1,967) 1,139

Surface 84 lb/ft, K

- 55,

BTC 16/15.010/14.823 55 95 2,980 1,410 1,326 (B) 1,499 (J) 868

Intermediate 51 lb/ft, K

- 55,

BTC 10.75/9.85/9.694 55 95 4,030 2,700 801 (B) 1,042 (J) 604

Long String 29 lb/ft, N

- 80,

BTC 7.0/6.184/6.059 80 110 8,100 7,020 676 (B) 746 (J) 597

29 lb/ft, P

- 110,

BTC 7.0/6.184/6.059 110 125 11,220 8,530 929 (B) 955 (J) 488Construction Details for FutureGen Alliance

Permit Number: IL- 137

- 6A -0004 (Well #4) Page G2of 5 Casing String Casing

Material (weight/grade/ connection) Casing

Outside/Inside/

Drift Diameter (in.) Yield

(ksi) Tensile (ksi) Internal (Burst)

Yield (psi) Collapse

(psi) Tension (1,000 lb) Body (B) Joint (J) Compression

(1,000 lb)
Tubing 9.3 lb/ft, N

- 80,

EUE 3.5/2.992/2.867 80 100 10,160 10,530 207.2 (B) 207.2 (J) 207.2

MTC = metal to metal seal threaded and coupled; BTC = buttress thread coupling; ksi = kilopound per square inchConstruction Details for FutureGen Alliance

Permit Number: IL- 137

- 6A -0004 (Well #4) Page G3of 5 

### Figure 1. I njection Well Construction Schematic (geology and depths shown in this diagram are based on site-specific characterization data obtained from the FutureGen 2.0 Stratigraphic Well).Construction Details for FutureGen Alliance

Permit Number: IL- 137

- 6A -0004 (Well #4) Page G4of 5 

### Pre-Injection Testing Plan

The pre-operational formation testing program will be implemented to obtain an analysis of the chemical and physical characteristics of the injection zone and confining zone(s) that meets the testing requirements of 40 CFR 146.87 and well construction requirements of 40 CFR 146.86. The pre-operational formation testing program will include a combination of logging, coring, formation hydrogeologic testing (e.g., a pump test and/or injectivity tests), and other activities during the drilling and construction of the CO2 injection well, monitoring well(s), and the

F utureGen 2.0 stratigraphic well. The pre-operational testing program will determine or verify

the de pth, thickness, mineralogy, lithology, porosity, permeability, and geomechanical information of the Mount Simon Sandstone ( CO 2 

### injection zone), the overlying Eau Claire Formation (confining zone), and other relevant geologic formations. In addition, formation fluid

characteristics will be obtained from the Mount Simon Sandstone to establish baseline data against which future measurements may be compared after the start of injection operations.

The results of the testing activities will be documented in a report and submitted to the U.S. Environmental Protection Agency (EPA) after the well drilling and testing activities have been completed but before the start of CO 2 

### injection operations. Before drilling the injection wells, a vertical pilot hole will be drilled through the Mount Simon Formation at the injection well location to collect pre-operational characterization and testing data for the injection wells. After completing the characterization and testing in the vertical pilot hole, the borehole will be plugged (c emented) from total depth to the kick-off point (approximate depth of 3,200 ft bgs) and converted to one of the horizontal injection wells. Additional selected pre-operational testing will

be conducted within one or more lateral boreholes. The permittee shall submit to the Director for review all pre-injection testing procedures for logging, sampling and testing required by 40 CFR 146.87 no later than 30 days prior to performing the first test, along with the schedule for such testing. The permittee shall submit any changes to the schedule 30 days prior to the next scheduled test. Testing shall not proceed without the Director's approval of the schedule.

Wire line Logging

Open -borehole logs will be run to obtain densely spaced, in situ, structural, stratigraphic

, physical, chemical, and geomechanical information for the Mount Simon Sandstone, the Eau Claire confining zone, and other key formations. Open-borehole characterization logs will be

obtaine d at the surface casing point, the intermediate casing point, and at the long-string casing point (i.e., total borehole depth) in the vertical pilot borehole. Open-borehole wireline logs will

not be r un in the 30-in.-diameter conductor casing borehole, because logging tools are not suitedfor this large-diameter hole size. Open-borehole logs for the surface, intermediate, and longstring sections of the well will include a suite of standard logs including gamma ray, formation density, neutron porosity, resistivity, spontaneous potential, photoelectric factor, and caliper. In addition, one or more specialized logs may also be run on the long-string section of the well, including for example, spectral gamma, sonic, resistivity-based and/or acoustic-based image, nuclear magnetic resonance, and elemental capture spectroscopy.Construction Details for FutureGen Alliance

Permit Number: IL- 137

- 6A -0004 (Well #4) Page G5of 5 

### Demonstration of Mechanical Integrity

This table summarizes the MITs and pressure fall-off tests to be performed prior to injection:



### Class VI Rule

Citation Rule

Description Test

Description Program

Period

[40 CFR 146.89(a)(1)] MIT

- Internal Annulus

Pressure Test Prior to

Operation

[40 CFR 146.87(a)(4)] MIT

- External Temperature Log Prior to

Operation
[40 CFR 146.87(e)(1)] Testing prior to

operating Pressure Fall

off Test Prior to

Operation

Additional information about testing procedures is addressed in the QASP attached to the Testing and Monitoring Plan of this permit. A successful test will be confirmed when casing pressure holds for one hour with less than 3% loss or gain in pressure.