MASSEY UNIT

Oil · District 08 · Lease #51853

Operator: PIONEER NATURAL RES. USA, INC.

Cum Oil

2.7M BBL

Cum Gas

5.5M MCF

casinghead

Wells

4

Production

2018-12 — 2026-04

Peak Month

2019-02

Production History

Cum Oil: 2,687,486 BBL Cum Gas: 5,539,102 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

45,872 BBL/mo

Di (annual)

22.2%

b-factor

0.0

EUR

2,480,182 BBL

R-squared

0.410

type

exponential

Operator History (from monthly production reports)

2021-02 — 2026-07 PIONEER NATURAL RES. USA, INC. 66 mo
2018-12 — 2021-01 PARSLEY ENERGY OPERATIONS, LLC 26 mo

Wells (4)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
2415HPIONEER NATURAL RES. USA, INC.210,5002019-11-19
4213HPIONEER NATURAL RES. USA, INC.210,0002017-09-06
2813HPIONEER NATURAL RES. USA, INC.210,0002017-09-01
4313HPIONEER NATURAL RES. USA, INC.310,2002017-09-01