Specific Well--15-205-28138 Engineering Data

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API: 15-205-28138 KID: 1044239498 Lease: Estes Revocable Trust Well: 4-3 Original operator: PostRock Midcontinent Production LLC Current operator: River Rock Operating, LLC Field: Altoona Location: T29S R16E, Sec. 4 SW NW NE SE 2000 North, 1220 West, from SE corner NAD27 Longitude: -95.6559789 NAD27 Latitude: 37.5500102 NAD83 Longitude: -95.6562378 NAD83 Latitude: 37.5500636 Lat-long calculated from footages

County: Wilson Permit Date: Mar-26-2013 Spud Date: Apr-08-2013 Completion Date: May-01-2013 Plugging Date: Well Type: OIL Status: Producing Total Depth: 1075 Elevation: 860 GL Producing Formation: Bartlesville IP Oil (bbl): IP Water (bbl): IP GAS (MCF): KDOR code for Oil: 143530 KDOR code for Gas: 227447 KCC Permit No.:

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Drill Stem Tests Taken: No Samples Set to Survey: No Cores Taken: No Electric Logs Run: Yes Attached Method of Completion: Perforated Date of First or Resumed Production/Injection: May. 07, 2013

Producing Method: Pumping Estimated production per 24 hours     Oil:     Water:     Gas: Disposition of Gas: Sold Tubing record     Size: 1.5     Set at: 996.2     Packer at: Production intervals:

Casing record new or used? New
Purpose of String	Size Hole Drilled	Size Casing Set (in O.D.)	Weight Lbs/Ft	Setting Depth	Type of Cement	# Sacks Used	Type and Percent Additives
SURFACE	11	8.625	22	22	A	5
PRODUCTION	7.875	5.5	14	1070.56	A	190

Additional Cementing/Squeeze Record purpose?
Depth Top Bottom	Type of Cement	# Sacks Used	Type and Percent Additives

Perforation Record
Shots Per Foot	Perforation record	Material Record	Depth
3	933-938	7 BBLS 15% ACID/ 163 BBLS GEL WATER/ 5981# 12/20 SAND	933-938

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Kansas Geological Survey, Oil and Gas Well Database
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Data added continuously.