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Argentine well code decoder, part by part.

YPF Operator when drilled YPF S.A.
.
Nq Province Neuquén
.
LCav Field or place Bandurria Sur field
-
848 Number Well 848
(h) Characteristic Horizontal

No type letter: development well.

YPF.Nq.LCav-848(h)

  • In production
  • Oil
  • Horizontal
  • Vaca Muerta
Cumulative oil
251,792 bbl
Cumulative gas
7.71 million m³
Peak rate
1,330 bbl/d
Latest month
243 bbl/d
−9 % vs Jul 2026 −74 % vs Aug 2025

History

  1. Jul 2024 Drilling
  2. Jan 2025 Fracturing
  3. Mar 2025 First production
  4. Jul 2025 Peak
  5. Aug 2026 Latest month
Oil per producing day, bbl/d
0
1,000
2,000
Peak 1,330

Production

First-year decline
73 %
Water cut
24 %
Estimated gross income
19.8 million US$

Against Vaca Muerta

IP90
779 bbl/d +22 % vs median 636 bbl/d
First twelve months
186,580 bbl +1 % vs median 184,825 bbl
IP90 rank
Better than 62 % of 2,145 wells
Among recent wells
Better than 40 % of 666 wells

Location

Province
Neuquén
Basin
Neuquina
Concession
Bandurria Sur
Field
Bandurria Sur
Formation
Vaca Muerta
Bandurria Sur, Neuquén See on the map

Well

Current operator
YPF
Classification
Exploitation (development)
Trajectory
Horizontal
Total depth
6,035 m
Status
In production

Completion

Lateral length
2,868 m
Frac stages
51
Stage spacing
56 m
Sand
12,376 t
Frac water
532,753 bbl

How to read a well code

A well code has up to six parts, separated by dots and a dash: the operator, the province, the field, the well type, the number and, in brackets, a characteristic.

YPF.Nq.LCav-848(h) OPERATOR PROVINCE FIELD NUMBER HORIZONTAL

Province codes

CodeProvinceWells in the registerAlso written
SC Santa Cruz 22,392
Ch Chubut 19,455 CH
Nq Neuquén 14,594 NQ
Md Mendoza 4,954 MD
RN Río Negro 4,380 Rn
MdN Mendoza, Neuquén Basin 2,002
LP La Pampa 1,979
TF Tierra del Fuego 1,068
SCA Santa Cruz, Austral Basin 646
St Salta 376 ST
Fr Formosa 51
Jj Jujuy 11
SJ San Juan 6
SL San Luis 5
BA Buenos Aires 3
ChCA Chubut, Cañadón Asfalto Basin 1
SCET Santa Cruz, El Tranquilo Basin 1
SF Santa Fe 1

Well types

LetterTypeWhat it isWells in the register
No letter Development well No letter: drilled inside the proven zone of a producing field.
x Exploration well Looks for oil or gas in a trap not drilled before. 3,694
e Extension well Outlines the zone an exploration well discovered. 643
a Step-out well Drilled beyond the edge of the zone with proven hydrocarbons. 5,839
xp Deep exploration well Looks for hydrocarbons below a zone that already produces. 239
xs Shallow exploration well Tests a shallower level another well detected. 7
es Study well Studies the layers of a region with no other wells. 76
r Re-entry well A new well opened from another well's casing; it keeps that well's number. 8
p Deepened well The new, deeper section of an existing well; it keeps that well's number. 10
s Disposal well A service well that takes formation water or other fluids. 86
ia Water injection well Injects water to push the oil towards the producing wells. 2,035
ig Gas injection well Injects gas for secondary recovery. 3
iv Steam injection well Injects steam for secondary recovery. 7
it Tertiary injection well Injects polymers, gels or other tertiary recovery fluids. 28
c Monitoring well A service well for measuring pressures and taking samples. 34

Characteristics in brackets

MarkMeaningDetail
(h)HorizontalThe well turns horizontal on its way to its target.
(d)DirectionalDeviated towards its target without turning horizontal.
(I), (II)ReplacementReplaces a well of the same number abandoned for technical reasons.
(bis)ReplacementA spelling from before 2009; the rules forbid it.

Operator codes

The code names the company that operated the area when the well was drilled, not the one operating it today.

CodeCompanySourceWells in the register
YPF YPF S.A. Annex II 43,245
PAE Pan American Energy LLC (Sucursal Argentina) Annex II 5,285
AST No published meaning 1,671
AOC No published meaning 1,629
PC No published meaning 1,624
PBE Petrobras Energía S.A. Example in the rules 1,385
TPT Tecpetrol S.A. Annex II 1,329
CAP Capex S.A. Annex II 1,327
CFP No published meaning 1,267
PLU Pluspetrol S.A. y Pluspetrol Energy S.A. Annex II 1,163
SHE No published meaning 969
PAR Petro Andina Resources Limited (Sucursal Argentina) Annex II 852
AS No published meaning 809
PCR Petroquímica Comodoro Rivadavia S.A. Annex II 799
OXY Occidental Argentina Exploration and Production Inc. Annex II 780
CSJ No published meaning 760
PPC No published meaning 652
VOA Vintage Oil Argentina Register 624
PNR Pioneer Natural Resources Register 548
APS No published meaning 515
BRI No published meaning 451
PEL Petrolera Entre Lomas S.A. Annex II 438
SJ No published meaning 409
Pp Pluspetrol Register 408

Unnamed codes are not in Annex II of the rules, and the register is not enough to attribute them to a company.

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