Design of a Gun Barrel Tank for Heavy Oil-Water Dehydration. Oil Engineer Challenges

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1 Design of a Gun Barrel Tank for Heavy Oil-Water Dehydration Oil Engineer Challenges

2 PRESENTATION TOPICS Pemex: Organization and Activities Problem Description: Is possible D&D heavy crude oil in a Gun Barrel? Methodology: Goals. Conclusion and next steps. Unique Development of Thermophisics model from PVT S analysis to plug and play on CFX (applied research).

3 PEMEX: ORGANIZATION AND ACTIVITIES They are four subsidiary bodies and besides there s another one Pemex International, they have been organized to carry out explotation, production, processing and sale of hydrocarbons and their derivatives. Pemex Corporative Pemex Exploration and Production Pemex Refinement Pemex Gas and Basic Petrochemical Pemex Petrochemical Pemex Internacional

4 PEMEX: ORGANIZATION AND ACTIVITIES The productive chain of PEMEX: Oil Exploration and Production, Oil Refinement, Process and Conditioning of Gas, and Production of secondary Petrochemical. Oil PEMEX Exploration and Productión Oil Pemex Refinement Exportation Gasolines Diesel Combustoleo Residues Gas Crudo Reservoir Gas Oil Gas and condensates Pemex Petrochemical Natural Gas Pemex Gas and Basic Petrochemical Sales Ethane LGP Natural gasolines Sulphur Methane Chain Ethane Chain Propane Chain Aromatics

5 DOS BOCAS MARITIME TERMINAL Pemex has implemented a technological improvement, with the incorporation of a dehydration and desalting system of Maya oil in Dos Bocas Maritime Terminal by means of storage tanks of 500 TB converted into Gun Barrel. This project was developed in Dos Bocas Maritime Terminal located in Ranchería El Limón S/N Paraíso, Tabasco, México.

6 SUBSTANTIAL ACTIVITIES IN THE DOS BOCAS MARITIME TERMINAL. DFP Storage Oil Oil Reception Oil Stabilization Dehydration and Desalting House of pumps National consumption Blend Gas-oil Separation battery Gas Compression CPG Cactus Effluent treatment Exportation Electric generation Electric power for operation of the Dos Bocas Injection to wells

7 Gráfica 1. Porcentaje de agua en el crudo maya recibido en TMDB 25 % Water Línea 1 Línea Ene Feb Mar Abr May Jun Jul Ago Sep Oct Nov Dic Ene Feb Gráfica 2. Contenido de sal en el crudo maya recibido en TMDB, LMB SALT PTB Línea Línea Ene Feb Mar Abr May Jun Jul Ago Sep Oct Nov Dic Ene Feb

8 What can we do? Electrostatic Vessel Nothing to do Stimulate wells Gun Barrel Close Production Forecast Water treatment...but which one is first?

9 PROCESS ENGINEERING LIFECYCLE PROJECT OPERATIONS & MAINTENANCE PROJECT CREATION FABRICATIONS/ CONSTRUCTION

10 Gun Barrel PROJECT EJECUTION Energy & Mass Balance. P & IDs Detailed Design Requisition Procurement and Building Operation Project Management Deliverables Management 4 months 5 months 6 months 3 days Electrostatic Vessel Energy & Mass Balance. P & IDs Detailed Design Requisition Procurement and Building Operation Project Management 4 months Deliverables Management 5 months 14 months 1 month

11 Heat Oil Tank Conversion Water Treatment Oil Dehydration & Desalting Pipeline Subsea

12 600 TBD Dehydrator Exchanger 30 C 60 C Desalter Gas 5 MMFCD DEHYDRATION AND DESALTING IN THE DOS BOCAS Typical Design Oil thermal Heating options Oil thermal 400 C Advantages and benefits 1. Avoid the shipment of 130,000 Tons CO 2 annual MMFCD approx. of natual gas not burned. 3. Reduces the temperature of waste correspondents gases to the atmosphere, diminishing the GLOBAL HEATING. Ecological Design RECUPERATOR HEAT PROJECT IN CER s 300 C Oil thermal

13 PROJECT IN CERTIFIED EMMISION REDUCTION (CER s)

14 In the Gun-Barrel tanks the feeding hydrated oil is carried out for the bottom through a distributor. TANK 500 TB HOLE 3 AND 9 HS HOLE 5 AND 7 HS HOLE 3, 5, 7 AND 9 HS DISTRIBUTOR Conventional hydraulic efficiency in GB 1-21%, best 65-80% (distributor).

15 In the Gun-Barrel tanks, the associated water in the oil enters in contact with the interface, in order to the water drops have coalescence and fall them out, the outputs of dehydrated oil are on the top and the water is drained in the bottom. Diameter 36in. Diameter 12in.

16 By mean ANSYS-CFD simulation it was determined that the Gun-Barrel tank whit 500 TB capacity operates with flows of TBD of oil, this is possible reaching quality with values inside the contractual requirements of 0.5% vol. of water and 50 PTB of salt maximum.

17 Internal Gun Barrel tanks Patent Design

18 GOALS Unique system D&D on line for 600 TBD heavy oil. Permanence in the global market offering quality oil. Construction record time. $350 Millions USD by year Penalties off.

19 CONCLUSION AND NEXT STEPS The project expectations were complete covered by the good design distributor with ANSYS-CFD. The prediction by ANSYS simulation between the real behavior is also the same because the desviation was 1%. The great real results about this system have broken paradigms, so much that Pemex is now constructing an additional system.