1

This is what Joe can do for you. Bringing a savvy BS Chemical Engineer with years

of experience of Elastomer/Rubber formulation, manufacturing, and analysis to “Fit for Use”.

Oil and Gas experience with products for Power-Section and Pump Stators, as well as Tank and Pipe

Lining applications.

2

Key Accomplishments

2014-15, Materials & Process Consultant for Seepex Pump.Recommended LORD products and designed

testing requirements for Mr. Jeff Means of LORD.Replaced Thixon/Rohm & Hass system, discussed

later.

3

2009-11, Engineering Manager, Roper Pumps, DuraTorque product and patent development, rubber formulary, rubber to metal bonding, FMEA, & rubber lab acquisition & commissioning. Installed testing for bond retention, reducing field failures.

4

1999-06, Seven patent submittals for Innovative Printing Blanket design using adhesives for bonding rubber to metal, and plastic sleeves. Cement recipes using LORD components for Coated Fabrics business.

5

1995-96, Director of Technology/Operations, Tank Lining, failure analysis of bonding field failures.

From Michigan to Texas, to Bangkok Thailand.

6

1993-95, R&D Manager, R&M, rubber lab design, acquisition & commissioning. Installed testing for bond retention reducing field failures.

7

First of it kind, Serial #2. Copied by other companies.

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Continued education over the years.

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SEEPEX Oil Field Stators for DRILEXEarly 2014, SEEPEX sold DRILEX on their

interest in providing stators for their mud-motor business, to replace stators from Roper Pumps.

Several initial trials with rubber recipes from Trostel, and Hexpol proved unsuccessful while bonding the rubber with A Thixon / Rohm & Hass system.

Stators failed early in the field and later on dynamometer performance testing.

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Kamran Mirza of SEEPEX requests help.July 2014, I traveled to SEEPEX to review their

issues, process, and materials.

Tube sand blasting and phosphating are done off-site at two different vendors.

Adhesive coating application was found not to be consistent. Thicknesses varied beyond and below specified levels.

Vendor rubber recipes, physical and chemical testing revealed these to be inadequate to perform for mud motor stators from my experience.

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Rubber Physical and Chemical Tests

688080 Trostel 1830K NBR 1831K XHNBR C07924-1 JK NBR

C07925-1 JK HNBR

0

500

1,000

1,500

2,000

2,500

3,000

3,500

4,000

4,500

5,000

Ten-sile

Elon-gation

(%)

Ten-sile

Stress (psi)

Original Tensile and Elongation

Tens

ile in

PSI

and

Elo

n-ga

tion

in %

12

688080 Trostel 1830K NBR 1831K XHNBR C07924-1 JK NBR C07925-1 JK HNBR0

2

4

6

8

10

12

14

16

18

20

% Swells in DI Water, Brine, and Diesel

% V

olum

e In

crea

se

13

688080 Trostel 1830K NBR 1831K XHNBR C07924-1 JK NBR C07925-1 JK HNBR0

50

100

150

200

250

Abrasion Value (mm3)A

bras

ion

Loss

14

688080 Trostel 1830K NBR 1831K XHNBR C07924-1 JK NBR C07925-1 JK HNBR

0

50

100

150

200

250

300

LORD LSR 1401180 Adhesion Oct, 2014 cure 275F, 320F XHNBR

Adhe

sive

Str

engt

h in

lbs

15

Primary

Adhesion in

lbs

average fa

ilure m

ode %R

Boiling W

ater lbs a

dhesion

average fa

ilure m

ode %R

Hot Adhesio

n Tear in lb

s @ 350F

average fa

ilure m

ode %R

0

50

100

150

200

250

LORD TSR 0012376 350F Cure, Aug. 2010

Adhe

sion

in lb

s, Fa

ilure

Mod

e in

% R

ubbe

r Ret

entio

n

16

LSR 1401180 Nov. 2014

207/6450 275°F

R%CP%

207/259

275°F

R%CP%

207/6450 325°F

R%CP%

207/259

325°F

R%CP%

050

100150200250300

C07924-1 JK NBRC07925-1 JK HNBR

1830K NBR1831K XHNBR

Primary Adhesion Two Systems Two Cureslb

s pul

l and

% c

over

age

17

207/6450 275°F

R% CP%

207/259

275°F

R% CP%

207/6450 325°F

R% CP%

207/259

325°F

R% CP%

0

50

100

150

200

250

300

C07924-1 JK NBR

1830K NBR

24 Hour Heat Age @ 300F Two Systems Two Cures

bls p

ull a

nd %

cov

erag

e

18

207/6450 275°FCP%

207/259 275°F CP%

207/6450 325°F CP%

207/259 325°F CP%

0

20

40

60

80

100

120

140

160

C07924-1 JK NBR

1830K NBR

24 Hour Boiling Water Stressed Two Systems Two Cureslb

s pul

l and

% c

over

age

19

Primary

Adhesion in

lbs

average fa

ilure m

ode %R

Boiling W

ater lbs a

dhesion

average fa

ilure m

ode %R

Hot Adhesio

n Tear in lb

s @ 350F

average fa

ilure m

ode %R

0

50

100

150

200

250

LORD TSR 0012376 350F Cure, Aug. 2010

Adhe

sion

in lb

s, Fa

ilure

Mod

e in

% R

ubbe

r Ret

entio

n

20

207/6450 275°FCP%

207/259 275°F CP%

207/6450 275°FCP%

207/259 275°F CP%

0

20

40

60

80

100

120

140

160

C07924-1 JK NBR

1830K NBR

12 Hour Autoclave @ 300F Unstressed

lbs p

ull a

nd %

cov

erag

e

21

Summary to DateThree cures temperatures were evaluated.

The higher the better.

Two systems were evaluated. It appears that 207/259 provides the best adhesion under various environmental conditions.

SEEPEX is selling stators to DRILEX using JK NBR and 207/6450 adhesive. These have passed stall and performance dynamometer testing and field service.

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