< leases

ROBBIE 17

Oil · District 7C · Lease #8685

Operator: PIONEER NATURAL RES. USA, INC.

Fields: SPRABERRY (TREND AREA)

Cum Oil

66k BBL

Cum Gas

240k MCF

casinghead

Wells

2

Production

1993-01 — 2019-07

Peak Month

1994-03

Production History

Cum Oil: 66,272 BBL Cum Gas: 240,093 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

956 BBL/mo

Di (annual)

35.4%

b-factor

0.6

EUR

65,274 BBL

R-squared

0.912

type

hyperbolic

Operator History (from monthly production reports)

2021-02 — 2024-11 PIONEER NATURAL RES. USA, INC. 46 mo
2013-12 — 2021-01 PARSLEY ENERGY OPERATIONS, LLC 86 mo
2006-04 — 2013-11 CHEVRON MIDCONTINENT, L.P. 92 mo
2002-01 — 2006-03 HEC PETROLEUM, INC. 51 mo
1994-12 — 2001-12 HALLWOOD PETROLEUM, INC. 85 mo
1993-01 — 1994-11 HALLWOOD ENERGY CORPORATION 23 mo

Wells (2)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
242-461-33458PIONEER NATURAL RES. USA INC.19,3001993-11-12
142-461-31647PIONEER NATURAL RES. USA INC.19,8001980-09-15