FIRST MODIFICATION TO LOAN AND SECURITY AGREEMENT

Exhibit 10.15

FIRST MODIFICATION TO

LOAN AND SECURITY AGREEMENT

This First Modification to Loan and Security Agreement (“First Modification Agreement”) is made and entered into this 27th day of August, 2013, by and between BISON DRILLING AND FIELD SERVICES LLC, a Delaware limited liability company (“Borrower”) and INTERNATIONAL BANK OF COMMERCE (the “Lender”).

WITNESSETH:

WHEREAS, on or about May 31, 2013, Borrower and Lender entered into that certain Loan and Security Agreement (the “Loan Agreement”) pursuant to which Borrower executed and delivered to Lender two promissory notes, as follows (1) that certain Revolving Line of Credit Promissory Note in the face amount of $5,000,000, with a maturity date of June 1, 2014 (“Revolving Note”); and (2) that certain Promissory Note in the face amount of $30,000,000, with a maturity date of April 17, 2013 (the “Term Note”) (the Revolving Note and Term Note are collectively referred to as the “Notes”); and

WHEREAS, Borrower and Lender wish to modify certain terms of the Loan Agreement, as provided for herein; and

NOW, THEREFORE, in consideration of the premises and of the mutual covenants and agreements contained herein, and for other good and valuable consideration, the receipt and adequacy of which are hereby acknowledged, the Lender and Borrower hereby covenant and agree as follows:

1. Modification of Collateral: Lender and Borrower desire to amend the descriptions of certain Collateral contained on Schedule 1 of the Loan Agreement as follows:

(a) Schedule 1: Schedule 1 of the Loan Agreement is hereby deleted and replaced with Schedule 1 attached hereto.

(b) Modification of UCC Filings: Lender is authorized to correct any UCC filings made in connection with the Loan Agreement to reflect the replacement of Schedule 1 herein.

2. Replacement of Certain Provisions. Each of Section 2.1(b) and Section 6.20 of the Loan Agreement is hereby deleted and replaced with the following respective provisions:

2.1(b). Term Note Use of Proceeds. Lender agrees to lend to Borrower the Term Loan for the specific purpose of: (i) refinancing Borrower’s current term loan with Amegy Bank with a principal balance of approximately $8,750,000; (ii) providing Borrower funds in the amount of approximately $7,500,000 to upgrade and improve a certain drilling rig known as Rig #80; (iii) providing Borrower funds in the amount of approximately $3,250,000 to upgrade and improve Borrower’s ancillary business activities, including running casing, rathole and mousehole drilling, rental items, hot oil (well service) and vacuum trucks (well service); (iv) provide Borrower funds in the amount of approximately $7,500,000 for purchase of certain equipment, including sixteen (16) new Kenworth trucks, ten (10) trailers, two (2) cranes and providing initial working capital for Borrower’s Heavy Hauling Group; (v) providing Borrower

First Modification to Loan & Security Agreement  Execution Version Page 1

funds in the amount of approximately $3,000,000 for upgrading and relocating two (2) of Borrower’s existing rigs for deployment in the Utica Shale in Ohio; and (vi) to pay Lender the Loan Fee described in Section 2.3 herein and Lender’s other costs of Closing, including but not limited to Lender’s attorney’s fees, filing fees and appraisal costs.

6.20. Fixed Charge Coverage Ratio. Beginning with the quarter-ending March 31, 2014, Borrower will at all times maintain a Fixed Charge Coverage Ratio of not less than 1.25 to 1, calculated and tested quarterly on a rolling 4 quarters basis. The Fixed Charge Coverage Ratio is calculated as the EBITDA for the period minus Distributions, minus Non-Financed Capital Expenditures, divided by the sum of current maturities plus interest expense.

3. Effectiveness of Loan Documents: Except as specifically modified by the terms and provisions hereof, each and every of the terms and provisions of the Loan Documents (as defined in Section 1.29 of the Loan Agreement) are and shall remain in full force and effect and are hereby assumed, ratified, and confirmed; and the execution, delivery, and effectiveness of this First Modification Agreement shall not, except as expressly provided herein, operate as a waiver of any right, power or remedy of Lender under any of the Loan Documents nor constitute a waiver of any provision of any of the Loan Documents. The parties hereto agree that the modifications herein contained to the Loan Documents shall not affect or impair the Loan Documents or any lien(s) securing the same.

4. Execution Counterparts: This First Modification Agreement may be executed in any number of counterparts, each of which so executed and delivered shall be deemed to be an original and all of which taken together shall constitute one and the same instrument.

5. Governing Law: The terms and provisions hereof shall be governed by, construed, and enforced in accordance with the laws of the State of Oklahoma.

6. Entire Agreement: This First Modification Agreement constitutes the entire agreement of the parties with respect to the subject matter hereof, and may be amended only in writing, executed by all parties herein.

7. Modification Only. This agreement is only a modification of the Loan Agreement and not a novation. All terms and conditions of the Notes and all other Loan Documents executed in connection with said Notes shall remain in full force and effect.

8. Defined Terms. Any term not defined herein shall have the meaning set forth in the Loan Agreement.

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IN WITNESS WHEREOF, the parties hereto have executed this First Modification Agreement as of the date first above written.

BORROWER:				BISON DRILLING AND FIELD SERVICES LLC, a Delaware limited liability company
				By:		/s/ Xxxx Van’T Hof
						XXXX VAN’T HOF, Chief Executive Officer
LENDER:				INTERNATIONAL BANK OF COMMERCE
				By:		/s/ Xxxxxx X. Xxxxxx
						XXXXXX X. XXXXXX, President

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SCHEDULE 1

To Loan and Security Agreement

Equipment Collateral

The Equipment described in Section 1.14( c) of the Loan and Security Agreement includes, but is not limited to:

Capital Equipment

Item #		Unit #		Description
1		Rig 41		Draw works: Skytop Xxxxxxxx N-46, powered by (2) Cat 3412 (not tags) with National C-245 Torque converters. Pump #1 Xxxxxxx Denver PZ9 1,000HP Triplex Pump with Cat D389 #08R2112. Pump 2 Maxium Triplex Pump with Cat 3512 #67Z00603. Rotating Equipment is Xxxxxxxx RSH 18” rotary table, Xxxxxxx Denver 300 Swivel, 300 ton, McKissik 250ton Block w/250ton Web-Wiulson Hydra hook. Has BOP Equipment, Generator House with (2) Cat 3406E 320Kw #’s 8ER03114 & 8ER01831. Mud System, Fuel Tank with 8,000 gl Diesel & built in lubester. Drill pipe & Drill Collars. Has all accessories needed to drill. 2012 Ameritech Crew house & Company man quarter’s #11-10103 & #11-101290.
2		Rig 42		Draw works: Skytop Xxxxxxxx N-46, powered by (2) Cat 3412 #’s 15-0768 & 15-0439 with National C-245 Torque Converters. Pump #1 Maxum 1300HP Triplex #06-0110 with Cat D399 (no tag), Pump #2 MZ9 #18-0240 l000Hp Triplex with Cat D398 #66B25226. Rotating Equipment is Xxxxxxxx RSH 18 rotary table, Xxxxxxx Denver 300 Swivel, 300 ton, McKissik 000 xxx Xxxxx w/250 ton Web-Wiulson Hydra hook. Has BOP Equipment, Generators House with (2) Cat 3406E #’s 8ER01830 & 8ER03113 320KW generators. 8,000 gl fuel tank with lubester. Mud System, Drill pipe & Drill Collars. Has all accessories needed to drill. 2012 Ameritech Crew house & Company man quarter’s # 11-101291.
3		Rig 56		Draw works: BDW 800, powered by (2) Cat 379 #76B251 & 68B3609. Pump l 1600 HP Maxum Triplex with Cat D3516 #52W00110, Pump #2 l000HP Maxum Triplex #16-09-08 with Cat D3516 #52W00109. Generator house with (2) Cat C15 320KW generators #8ER04255 (no tag 2nd unit). Rotating Equipment National 22 1/2” rotary table, Ideco 300 ton Swivel. National 300 ton Traveling block and hook. Has BOP Equipment, 10,000 gl fuel tank with lubester. Mud systems, Drill pipe & Drill collars. Has all accessories needed to drill 2012 Ameritech Crew house & Company man quarters.
4		Rig 62		Draw works: Rebuilt BDW 800 MI with Xxxxx 236 Brake #234. Powered by (2) Cat C15’s #MCW03037 & MCW03035, Pump #1 Maxum 1600 HP Triplex pump # 18-0231 with Cat D3516 # 66B2929, Pump #2 Maxum 1000 HP Triplex with Cat D398 # 66B7168. Rotating Equipment Xxxxxxx Denver 22 1/2” Rotary table, National 815 300 ton swivel, Oilwell 300 ton Traveling block w/250 ton Web Wilson Hook. Has BOP Equipment, Generator house with (1) Cat 353 # 320Kw #EM166959711 & (1) Cat 3406 #3ER10111. 10,000 gl fuel tank with lubester. Mud Systems, Drill pipe & Collars. Has all accessories needed to drill. 2012 Ameritech Crew house & company man quarter’s #11-101296.

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Item #		Unit #		Description
5		Rig 64		Draw works: Cabot 1200 w/Paramac V-80 dual aux brake, (2) Cat 3412 #4CR1477. Pump #1 Ideco 1600 #136 w/Cat 398 #35Z01183. Pump #2 MZ9 #18-0254 w/Cat 398 #66B866. Rotary is 27 1/2” continental Emsco, Swivel 400T National, block 400T Xxxxxxx Denver w/Xxxxxx Hydra Hook. Has BOP Equipment, Generators house with (2) Cat Cl5 400KW #’s FSE00310 & FSE00311, Mud system, Drill Pipe & Collars. Has all accessories needed to drill. 2012 Ameritech Crew house & company man quarter’s #11-101298. Rig and all support equipment refurbished 2012.
6		Rig 75		Draw works: National 110 w/336 Xxxxx brake, (2) Cat 3412 #’s 81Z17730 & 81Z03732. Pump #1 Bomco 1600 Hp Triplex #Bl72006 w/Cat D3512 #24Z09366. Pump #2 Bomco 1600 HP w/Cat D3512 #24Z08925. Rotating Equipment 27 1/2” Table, National 400 Ton Swivel National 400 Ton Block, Has BOP Equipment, Generators house with (2) Cat 3412 #’s BLG02826 & TFT00398, Mud system, Drill Pipe & Collars. Has all accessories needed to drill.
8		Rig 87		Draw works: Oilwell 760 w/342 Parmac Aux Brake, (2) Cat 379 #D879BP, Pump #1 1300HP Ideco #186 w/Cat 3512, Pump #2 1300 HP Ideco #146 w/Cat 3512 #49Y00830, Rotary 27 1/2” Mid Continent, Swivel 400Ton Ideco, Block 250 ton National combo. Has BOP Equipment, Generators house with (2) Cat 3412 #81Z01705 (no tag 2 unit). Mud system, Drill Pipe & Collars. Has all accessories needed to drill.
9		Rig 1		Workover rig: Xxxxxx 550, year 2009 Serial # RA532499, 104 Mast-250K lb pull. VIN# 1T95SD2319A5322499
10		Rig 2		Workover rig: Xxxxxx 550, year 2009 Serial # RA532489, 104 Mast-250K lb pull. VIN# 0X00XX0000X000000
11		Rig 3		Workover rig: Xxxxxx 550, year 2009 Serial # RA532486, 104 Mast-250K lb pull. VIN# 0X00XX0000X000000
12		Rig 4		Workover rig: Xxxxxx 550, year 2009 Serial # RA532485, 104 Mast-250K lb pull. VIN# 0X00XX0000X000000

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Item #		Unit #		Description
13		101		Spudder Rig #1: Atlas Copco RD20; Carrier: 1cydgv5845t046914, Unit: 6497. 600HP duplex pump w/Cat 398
14		102		Spudder Rig #2: Atlas Copco RD20; Carrier: 1cydgv5885t046916, Unit: 6977-600HP duplex pump w/Cat398
15		R1		Reversing Unit #1: PUMP -Model PE50, Ser. # 716730 w/Eng DW LS TT Ser. # 8FF7224. SWIVEL: 2.5/585 Ser. # S-150-H w/Eng Cummins B39TAAP110 Ser. # 46382749
16		R2		Reversing Unit #2: PUMP -Model HSTEEE, Ser. # 18028 w/Eng Cat C7 Ser. # JTF11068. SWIVEL: S85 Vin # 0X0XX00000X000000 w/Eng Cat C4.4 Ser#44602867

RIG 80

Draw works: National 80 1000HP w/ (2)Cat 379, Pump #1 Maxum 1300HP Triplex w/Cat D399, Pump #2 Maxum 1300HP w/Cat D399, Rotating Equipment Hacker 27 1/2”, Xxxxxxx Denver 000 Xxx Xxxxxx, 000Xxx XxXxxxxx 000Xxx Block w/250 Ton Web-Xxxxxx Hydra Hook. Has BOP Equipment, Generators, Mud system, Drill Pipe & Collars.

Top Drives

Top Drive #1; FDS 150; Serial # TD-155, #HPU-155

Top Drive #4; Tesco 250 HMI; Serial # T24123-11, #T10917

Top Drive #2; Tesco 250 HMI; Serial # TD-131, #HPU-145

Top Drive #3; Tesco 250 HMI; Serial # TBU

Vehicles

Type		Manufacturer		Model #		Serial No./VIN No.		Year/Age		Miles
Truck		Ford		F150		0XXXX0XX0XXX00000		2011		35300
Truck		Ford		F150		0XXXXXX00XX000000		2011		66219
Truck		Chevrolet		1500		0XXXXXX0XXX000000		2010		91620
Truck		Chevrolet		1500 ILT		0XXXXXX00XX000000		2011		68500
Truck		Chevrolet		1500 ILT		0XXXXXX00XX000000		2011		66400
Truck		Chevrolet		1500 ILT		0XXXXXX00XX000000		2011		90285
Truck		Chevrolet		1500 ILT		0XXXXXX00XX000000		2011		120000
Truck		GMC		2500		0XX0X0X00XX000000		2010		197000
Truck		Ford		F450		0XXXX0XX0XXX00000		2011		86500
Truck		International		4200/Service Trk		0XXXXXXX00X000000		2007		174329
Truck		Ford		Lariat		0XXXX0XX0XXX00000		2012		35200
Truck		Ford		F150		0XXXX0XX0XXX00000		2011		100000

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Type		Manufacturer		Model #		Serial No./VIN No.		Year/Age		Miles
Truck		Ford		F150		0XXXX0XX0XXX00000		2012		19300
Truck		GMC		C4500		0XXX0X0000X000000		2005		91300
Truck		Ford		F150		0XXXX0XX0XXX00000		2012		49574
Truck		Ford		F150		1FTEX1CMKD95279		2013		90000
Truck		Ford		F150		1FTEX1CMKD95280		2013		43000
Truck		Ford		F150		1FTEX1CMKD95278		2013		40500
Truck		Chevrolet		2500		0XX0XXXX0XX000000		2011		49500
Truck		Chevrolet		2500		0XX0XXXXXXX000000		2011		57000
Truck		Ford		F250		0XX0X0XX0XXX00000		2012		72000
Truck		Chevrolet		Silverado 3500		0XXXX00000X000000		2005		150000
Truck		Ford		Lariat		0XXXX0XX0XXX00000		2010		140500
Truck		Ford		F150		0XX0X0XX0XXX00000		2011		20000
Truck		Ford		F250		0XX0X0XXXXXX00000		2011		31000
Truck		GMC		2500		0XX00XXXXXX000000		2012		14000
Tractor		Xxxx		CH613		0X0XX00X00X000000		2004
Truck		Chevrolet		1500		0XXXXXX00XX000000		2011		69900
Truck		Ford		F450 (welder)		0XXXX0XX0XXX00000		2011		32153
Tractor		International		2574 Winch		0XXXXXXX0XX000000		1991
Truck		Ford		F450		0XXXX0XX0XXX00000		2010		11000
Tractor		Kenworth		Winch truck		1594435
Trailer		Terr		Crew/dog house		TT227972		2009
Trailer		Terr		Crew/dog house		TT227973		2009
Trailer		Terr		Crew/dog house		TT227974		2009
Trailer		Terr		Crew/dog house		TT227975		2009
Trailer				40’ Pipe Trailer		T1329491
Trailer				40’ Pipe Trailer		T1329490
Steam Cleaner				Trailer Steam Cleaner		T2E37249		2009
Power Washer				Trailer Mounted Power Washer		253972/16VNX12299		2012
Extenda Forklift		Skytrack		10054 10,000 lb		139068
Extenda Forklift		XXXX		RS8-42		RS842JW1215685		2005
Extenda Forklift		XXXX		RS8-42		RS845JW0315346		2005
Extenda Forklift		XXXX		RS8-42		RS842JW0815519		2005
Extenda Forklift		XXXX		RS8-42		RS842JW0515416		2005
Extenda Forklift		XXXX		RS8-42		RS842JW1115649		2005
Extenda Forklift		XXXX		RS8-42		RS842JW0715486		2005
		CT				0XXXX00000X000000		2009
		CENT				0XXXX00000X000000		2009
		CLAS				00XXX00000X000000		2009
		SWIV				0X0XX0000XX000000		2010
		SHOP				TR204604		2012
		DCRC				00XXX000000000000		2006

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Not in Service Equipment

Draw works: 125 National/Ideal 2000 hp (qty 1) (Ram)

Xxxxxxxxx Xxxx Air Hoist (Xxxxx)

Xxxxxxx Denver Air Hoist (Xxxxx)

Air Hoist Winch (Yantai)

10’W x 32’L Tool Pusher House (Xxxxx)

42“H x 4’10”W x 57’L Catwalk w/ Steel Deck (Xxxxx)

Koomey 6-Station Closing Unit (Xxxxx)

42“H x 5’W x 50’L Sgl Sec Catwalk (Xxxxx)

27 1/2” Rotary Table (Xxxxx)

Rebuilt Rotary Table

Skytop Xxxxxxxx Drawworks/Deadline Anchor Xxxxxxxxx

Supply

Air Compressors: 185 cfm air compressor Ser. # 11076 (Ram)

Xxxxxx Style Retriever Wireline Machine (xxxxx)

Torque converters: National C-300 Ser. # 1930 (Ram)

Torque converters: National C-300 Ser. # 1931 (Ram)

Torque Spare (Rebuilt Rig 41) (Rig 62)

3406 w/ Xxxxxxx Engine (Xxxxxx)

Floor Engines (Rig 62 drawworks rebuild)

3408 CAT Diesel Engine

D395 Engine Overhaul

CAT Rebuild (Rig 87 drawworks)

Mud Pump (Gear End)

Pump Motor

Mud Pits - Shale Shaker

Trip Tank (Xxxxxx)

Max 2000 10 HP Mud Agitator p/h Elec Mtr. (2) Drk. Vibrators

Xxxxxxx Type B 13 5/8” 3M Dbl w/o Rams

5M# Choke Manifold w/ (1) 3 l/16” (3) 2 l/16” Gates

2002 CAT 435 KW Generator p/b C-16 (3456 hrs)

Genhouse: 3412 cat gensct 525 kw on open wall genhouse Ser·

# 00000klry00572-3f07647 (Ram)

Portable generator: Cummins 180 kw enclosed tandem trailer

Ser. #. rl-19-51838-10/21-1 (Ram)

3406 Generator (Xxxxxx)

Electric motors: 75 hp & 40 hp baldor motors (Ram)

7,138 feet of Drill pipe

Drill Collar 5 1/2” to 7” Slips

Type C Drill Collar Safety Clamps (4)

6 5/8” Reg Slick Drill Collars

4 1/2” XH Slick Drill Collars

Pipe Racks: Ass. Pipe racks and steel racks (Ram)

(2) 42“H x 28’L Triangular Pipe Racks

(2) 42“H x 15’L & (2) 42“H x 28’L Triangular Pipe Racks

Set (2) 42“H x 28’L Triangular Pipe Racks (Xxxxx)

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Crown Cluster set of 56’x5” sheave cluster, grooved 1 3/8”

(Ram)

Xxxxxxx Denver Traveling Blocks (300 Ton) (From Rig 41)

XXXXX 000 Xxx Xxxxx

Swivels: Xxxxxxx Denver 400 Ton (Ram)

Swivel (Rig 41)

5 1/4” Hex Xxxxx (38.5’) (Xxxxx)

5 1/4” Hex Xxxxx Drive Bushings (Xxxxx)

Xxxxx Hoses: 42’x4” xxxxx xxxxx hoses (Ram)

Xxxxx Hoses: 20’x4” gates vibrator hoses (Ram)

Xxxxx Hoses: 10’x4” gates vibrator hoses (Ram)

VARCO 5 1/4” HEX XXXXX DRIVE BUSHING

3 1/2” ID Rotary Hose

2 3/4” x 108” Elevator Links (Xxxxx)

(2) 2 3/4” x 108” Elevator Links (Xxxxx)

BJ Type B Tongs w/ Heads (Xxxxx)

WTM Type B Tongs w/ Heads (Xxxxx)

SDML 3 1/2” to 4 1/2” DRILL PIPE SLIPS W/ Inserts

Flanges: assortment 4”, 6”, 8” (Ram)

Pipe Fittings: assortment of xxxx forty fives collars/flanges

(Ram)

Ball Valves: 2”, 4”, 6” brass and steel valves (Ram)

Large assortment of nuts, bolts and fittings (Ram)

Sand blaster with hoses and nozzle (Ram)

3 Welders (Xxxxxx)

342 Brakes (Xxxxxx)

Chemical BBls (Xxxxxx)

HPU (Xxxxxx)

Pump Expendables (Warren)

MCM cent Pumps (Warren)

(16) Sets of 9“H x 28’L Pipe Runners (Xxxxx)

5 1/4” Hex Xxxxx w/ Varco HD Drive Bushing & Xxxxx (Xxxxx)

(7) WTM Type A (4) 9 Seg (2) 10-Seg (l) 12 Seg (Xxxxx)

3 1/2’’ ID x 25’L Steel Flex Hose & 3 1/2“ID x 20’ Vibrator

Hose (Xxxxx)

(5) Slips (AOT, (2) Varco, Xxxxxx B-long, Xxxxxx 8 Seg)

(Xxxxx)

(2) Type T DC Safety Clamps (NEW) (Xxxxx)

(1) 12 Seg, (1) 8 Seg, 7 Seg, 2” Chicksan, (6) Handls, Auto

Drill Sensor (Xxxxx)

398 Engine Rebuilt (originally from Rig 62)

Mud Pump (>350 HP) Maxium (M-1300)

#2 Generator Engine(Cat D379)

Xxxxxx SD Casing Elevators (Xxxxx Pittsburgh)

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Ancillary Items

MISC Equipment & Supplies

20’ SEA CONTAINER

BLOWOUT PREVENTER 1-1

BLOWOUT PREVENTER 2-1

BLOWOUT PREVENTER 3-1

REPLACEMENT

FLOWBACK TANK 1-1

FLOWBACK TANK 2-1

FLOWBACK TANK 3-1

CLIPPER LINE SCALE

WELDER

CAT WALK

WELDING TOOLS

RAW STEEL

MISC SHOP SUPPLIES

PIPE RACK

3-1/2” SLICK DRILL COLLAR

BJ 50 TON AIR TUBING SLIPS

ELEVATOR LINKS

TUBING ELEVATOR

TUBING AIR SLIPS

ROD ELEVATORS

3 1/8” DRILL COLLARS - 10

3 1/2” DRILL COLLARS- 9

LIFT SUBS- 18

DRILL COLLAR

ACCESSORIES (XOVER)

DRILL COLLARS

TUBING TONGS

PIPE RACKS

XXXXXXXX

XXXXXXX 7 1/16” 3K# BOP

XXXXXXX 7 1/16” 3K# BOP (2)

BJ TYPE TBG TONGS

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