Specific Well--15-205-28146 Engineering Data

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API: 15-205-28146 KID: 1044243867 Lease: Olson, Ruby A. Well: 2-18 Original operator: PostRock Midcontinent Production LLC Current operator: River Rock Operating, LLC Field: Buffalo-Vilas Location: T28S R16E, Sec. 2 NE NW SW SW 1010 North, 435 East, from SW corner NAD27 Longitude: -95.6312732 NAD27 Latitude: 37.6340239 NAD83 Longitude: -95.6315325 NAD83 Latitude: 37.6340728 Lat-long calculated from footages

County: Wilson Permit Date: Apr-04-2013 Spud Date: Apr-27-2013 Completion Date: May-13-2013 Plugging Date: Well Type: OIL Status: Producing Total Depth: 1220 Elevation: 1043 GL Producing Formation: Bartlesville IP Oil (bbl): IP Water (bbl): IP GAS (MCF): KDOR code for Oil: 143659 KDOR code for Gas: 227853 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: Jun. 07, 2013

Producing Method: Pumping Estimated production per 24 hours     Oil:     Water:     Gas: Disposition of Gas: Sold Tubing record     Size: 1.5     Set at: 1145     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	23	A	5
PRODUCTION	7.875	5.5	14	1210.82	A	200

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	1084-1091	7 BBLS 12% ACID/ 108 BBLS PRODUCED WATER/ 197 BBLS GEL WATER/ 14140 # 12/20 SAND	1084-1091

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