Donald F. Sleeth, II

*** ****** ***

Evergreen, CO 80439

Cell: 281-***-****

OBJECTIVE: Seeking a senior drilling engineering/operations position with a growing company which seeks to continually outperform its peer group. EXPERIENCE: HAWKWOOD ENERGY; Denver, CO

Sr. Drilling Engineer Consultant, 2020 to Present

• Design and supervise operations for Eagle Ford and Woodbine horizontal wells with extended reach laterals up to 12,500’.

• Unconventional Resource (UR) Development (shale), Managed Pressure Drilling (MPD), horizontal directional well designs, casing while drilling, Corva, continuous improvement, cost reduction initiatives

HALCON RESOURCES CORPORATON; Houston, TX/Denver, CO Sr. Drilling Manager, 2012 to 2019

• Initial 8-month assignment in Houston: Built the Houston Business Unit Drilling Team from inception including Drilling Engineers, Drilling Superintendents, Drilling Tech, Materials Analyst, Financial Analyst, Regulatory, Rig Supervisors, Construction Superintendents and Admin Assistants. Operating Areas Included: Eagle Ford, Woodbine, Tuscaloosa Marine Shale, Utica and Wilcox up to 13 rigs.

• Subsequent assignment in Denver (2013-2016): Built a commensurate Drilling Team in Denver operating up to 10 rigs in the Bakken (Pad Drilling).

• Final assignment in Denver/Houston (2016-2019): Manage Drilling Team operating up to 7 rigs in the Delaware Basin

(Ward, Winkler, Pecos and Reeves Counties). 10k’ Laterals in Wolfcamp and Bone Spring Intervals.

• Proven results with top tier performance through batch drilling efficiencies and continuous improvement initiatives while maintaining EHS emphasis as a core value.

• Unconventional Resource (UR) Development (shale), Managed Pressure Drilling (MPD), horizontal directional well designs, extended reach drilling, Landmark drilling software NEWFIELD EXPLORATION COMPANY; Denver, Colorado

Drilling Manager, Rocky Mountains, 2010 to 2012

• Reported to Business Unit V.P. and Managed the Drilling Operations for the entire Business Unit (~40% of NFX’s capital budget)

• Relocated to Denver and built the Rocky Mountain Business Unit Drilling Organization from inception.

• Staff included Area Drilling Team Leads, Drilling Engineers, Drilling Techs, Accounts Payable, Materials Analysts, OCTG Purchasing Agent, Field Foremen, Rig Supervisors and Construction Supervisors.

• Core areas of operations: Williston Basin (Bakken Extended Laterals); Utah (Monument Butte area Green River, Basal Carbonate Horizontals, Wasatch & Black Shale Horizontals); and Montana (Southern Alberta Basin).

• As member of Rockies Management Team, involved in business unit decisions regarding staffing, acquisitions, and business strategy.

Drilling Manager, Appalachia; Houston, TX, 2009 to 2010

• Built the Marcellus Drilling Team from inception.

• Managed NFX’s entry into the Marcellus with an exploration program in Wayne County, PA.

• Coordinated with local government agencies and landowner groups such as the PADEP, Delaware River Basin Commission (DRBC), County Soil Commissioner, Sheriff’s Office, Fire Departments, Township Councils and Landowner Associations

Drilling Team Leader, Onshore Gulf Coast; Houston, TX, 2008 to 2009

• Supervised Drilling Operations & Engineering staff for S. TX and E. TX drilling operations

Drilling Operations Engineer, Gulf Coast; Houston, TX, 2005 to 2008

• Supervised Drilling Operations for 2 to 3 rigs drilling Wilcox and Frio wells in South Texas and Gulf of Mexico

• Experience included: HTHP gas wells (up to 18.6 ppg mud weights), Environmentally Sensitive locations next to Baffin Bay, rotary steerable systems, closed loop systems, soil cementing locations, casing while drilling.

DEVON ENERGY CORPORATION; Houston, Texas

(Formerly Pennzoil and PennzEnergy); 1998 to 2005

Drilling Superintendent, 2002 to 2005

• Supervised offshore drilling, completion and workover operations.

• Continued to provide drilling engineering services for complex offshore wells.

• Experience included: Extended reach wells, HTHP, Sour Service

(Mobile Bay), mentoring engineers

• Participated in monthly Deep Shelf Operator’s Group meetings Senior Drilling Engineer, 1998 to 2002

• Designed wells for Offshore Gulf of Mexico

• Drilling Foreman on Offshore GOM rigs (approximately 1 year)

• Experience Included: Horizontal wells, HTHP wells, platform, jack- up and barge work, SOBM and DOBM

TRITON ENGINEERING SERVICES, INC.; Houston, Texas

Drilling Engineer, 1997 to 1998

• Designed turnkey drill wells for the Offshore Gulf of Mexico

• Deep HTHP wells

• On-site Engineer for PEMEX turnkey operations in the Bay of Campeche, Mexico

EXXON COMPANY, USA; Houston, Texas & New Orleans, LA Senior Drilling Engineer, 1994 to 1997

• Designed wells in the following areas: East Texas, South Texas, West Texas, Oklahoma, Rocky Mountains, Offshore Gulf of Mexico

• Experience included: horizontal wells, sour service, BLM, tubingless completions, GOM shelf completions (gravel packs) BENNETT & WILLIAMS ENVIRONMENTAL CONSULTANTS, INC.; Columbus, Ohio

Intern Engineer, 1993 to 1994

• Soil remediation and industrial wastewater projects INTERSTATE DRILLING, INC.; Weston, West Virginia

Field Hand, 1992

EDUCATION: THE OHIO STATE UNIVERSITY; Columbus, Ohio Master of Science Civil Engineering, 1994

• Summa Cum Laude

UNIVERSITY OF PENNSYLVANIA; Philadelphia, Pennsylvania Bachelor of Science Civil Engineering Systems, 1992 AFFILIATIONS: • American Association of Drilling Engineers

• Society of Petroleum Engineers

• American Petroleum Institute

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