PEMEX OFFSHORE DEHYDRATION AND PRODUCED WATER

TREATMENT PROJECTS Jorge A. Herrera Rodríguez / PEMEX EXPLORACION Y PRODUCCION

Friday, February 5, 16 The Produced Water Society Seminar 2016 1

Friday, February 5, 16 The Produced Water Society Seminar 2016 2

Introduction APC is one of the main oil producing assets in Mexico, with oil production of 268 TBPD, to April 30th, 2015

Oil producing fields: Akal, Sihil, Ixtoc, Nohoch, Chac, Kutz,

Takín, Kambesah, Ek y Balam

Geological Horizons: Tertiary (Eocene Medium), Cretaceous, JSK and JSO

• Oil Production (Tbpd): 298**

• Gas Production (MMcfd): 1,260**

• Producing Wells: 205**

• Production Facilities: 7

** March 2015 data

AKAL

NOHOCH

CHAC

TAKIN

KUTZ

KAMBESAHIXTOC

EK-BALAM

SIHIL

KU

MALOOB

ZAAP

ABKATUN

TARATUNICH

CAAN

A I C

AIKMZ

APC’s Data Sheet

Current status of produced water sent to TMDB (onshore)

Friday, February 5, 16 The Produced Water Society Seminar 2016 3

C.P. Akal-J

TMDB

L1

L3

C.P. Akal-C C.P. Akal-G

-2C

-2C

-2C

-2C

-2C

-2C

-2C

-2C

-2C

-2C

-2C

-2C

-C

-C

-C

C.P. Akal-B

C.P. Akal-L Ek-Balam

Dehydration systems

Akal-D

Aqueduct Pipeline Oil / Water

L2

Pipeline 2 to TMDB

Capacity

Oil Production 90 TBPD Produced Water 52 TBPD Total 142 TBPD

Pipeline 1 to TMDB

Capacity

Oil Production 156 TBPD Produced Water 91 TBPD Total 247 TBPD

Pipeline 3 to TMDB

Capacity

Oil Production 53.3 TBPD Produced Water 11 TBPD Total 64.3 TBPD

C.P. Nohoch-A

System Capacity Dehydration Akal-G1 10 TBPD Dehydration Nh-A* 45 TBPD Total PW injected 55 TBPD

Separated PW

Total oil / pw sent to TMDB

Total oil / pw sent to TMDB

Total oil / pw sent to TMDB

Future Produced Water Management

Friday, February 5, 16 The Produced Water Society Seminar 2016 4

C.P. Akal-J

TMDB

L1

L3

PW injection on Akal-TJ Capacity

Total 90 TBPD

C.P. Akal-C C.P. Akal-G

-2C

-2C

-2C

-2C

-2C

-2C

-2C

-2C

-2C

-2C

-2C

-2C

-C

-C

-C

C.P. Akal-B

Akal-L Ek-Balam

Dehydration systems

Capacity Dehydration & Desalt 260 TBPD PW treatment 100 TBPD Contractual Start Up 10 / Nov / 13 Estimated Start Up 20 / May / 15

Akal-J1 Dehydration & Desalt System

PW injection on Nohoch-A Capacity

Total 90 TBPD

Nohoch-A/Perf (Revamp)

Capacity Dehydration (Total Liquid)

150 TBPD

PW treatment 100 TBPD Estimated Start Up 25 / Feb / 16

Aqueduct Pipeline Oil / Water Oil

C.P. Nohoch-A

Akal-C Dehydration

Capacity Dehydration (Total Liquid) 400 TBPD PW treatment 200 TBPD Estimated Start Up 31 / Mar / 18

AKAL G2 DDP Capacity

Dehydration (Total Liquid) 300 TBPD PW treatment 250 TBPD Estimated Start up TBD

Akal-CD

Akal-G2

Friday, February 5, 16 The Produced Water Society Seminar 2016 5

Friday, February 5, 16 The Produced Water Society Seminar 2016 6

Maintenance Pressure

Remainder reserve for DDP ~ 900 MMbls

STOOIP.

Gas cap

Aquifer

Gravity Drainage

There are ~1000 MM additional oil barrels tramp in the aquifer.

Water is removed to begin the process of double displacement and retrieving the volume of oil available in the area invaded by the aquifer.

Produce Water treatment Sending to the sea

Nitrogen Injection

F.E. 31%

F.E. 53%

Field Development and Production

According the water production is reduced the window moves down to the bottom, exposing the rock to the gas cap, encouraging the gravity drainage.

The available window oil will reduce, generating a gas cap and the lower section is flooded. Current oil reserves (South zone): 416 MMBls

Double Displacement

THANK YOU

Friday, February 5, 16 The Produced Water Society Seminar 2016 7