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Meeting Pipeline Specifications for Gas and NGLs Permian Midstream Congress 2015 Michael Landoll, PhD., Senior Engineer, Dow Oil, Gas & Mining

Dow Oil, Gas and Mining

•  Drilling •  Cementing •  Stimulation

•  Phase separation •  Asset integrity •  Flow assurance

•  Gas injection •  Chemical flooding •  Thermal recovery

applications

•  Offshore flow assurance

•  Gas recompression

•  Gas dehydration •  Gas compressor

engines •  Gas pipeline line

heaters

•  Onshore and offshore gas processing

•  LNG •  Gasification •  Acid gas

enrichment/sulfur plants

•  Ammonia synthesis

•  Acid gas removal •  LPG treating •  Isomerization and

reformer regeneration

•  Heat transfer

Our brands: •  EMBARK™ •  CELLOSIZE™ •  ANTISOL™ •  POLYOX™

•  DEMTROL™ •  ROMAX™ •  ACCENT™ •  AQUCAR™

ELEVATE™ ROMAX™ DOW FILMTEC™ DOW IntegraPac™

•  NEPTUNE™ •  HYPERLAST™ •  NORKOOL™ •  DESITHERM™

•  UCARSOL™ •  SELEXOL™ •  NORKOOL™

DESITHERM™ •  DOWTHERM™ •  SYLTHERM† •  SulFerox®

•  UCARSORB™

•  AMINE MANAGEMENTSM Program

•  UCARSOL™ •  SELEXOL™ •  UCARSEP™ •  ISOFORM™

Agenda

•  Acid Gas Removal Technologies •  Recovery of NGLs from Natural Gas Streams

•  CO2 and H2S Removal from NGL Streams

•  Removal of Acid Gas and Organic Sulfur •  Amine H2S Removal at High Ambient Temperatures

•  Corrosion and Scaling in Dehydration Units

•  Hot Oil Selection

Acid Gas Removal Technologies

Recovery of Hydrocarbons from Gas Streams UCARSORB™ NGL Adsorbents

•  Natural gas streams often contain varying levels of NGLs, which can hold significant value for operators

•  New technology developed using polymeric beads with high surface area to adsorb NGL compounds

•  Looks similar to a zeolite bed but opposite principle – not size exclusion (picking up small molecules) but collects large hydrocarbons, allowing smaller compounds to slip through the bed

•  Installing first plants on: •  Flare Gas NGL recovery •  Engine Gas NGL exclusion •  Pipeline Gas NGL concentration

•  Low pressure drop (<5 psig)

CO2 Removal from NGL Products UCARSOL™ LL Specialty Solvents

•  The rising value of NGLs has shifted industry focus toward development of heavy natural gas plays.

Removal of Acid Gas and Organic Sulfur

Removal of Acid Gas and Organic Sulfur Hybrid Solvents

Relative solubilities of methyl mercaptan at 104 F and 4.6 psi partial pressure.

Relative solubilities of propane at 104 F and 26.7 psi partial pressure.

•  Hybrid solvents: partially chemical solvent nature, partially physical solvent nature

•  Hybrid solvents bring advantages over Amine solvents and Physical solvents

•  CO2 and H2S removal + Mercaptan removal •  Lower energy than Amine solvents

Actual Plant Data Comparison

UCARSOL™ HYBRID 701 ABSORBER

Component Actual Plant (molar)

CH4 82%

C2H6 5.2%

C3H8 2.1%

CO2 5.6%

H2S 3.9%

CH4S 121 ppm

Component Actual Plant (molar)

Simulated (molar)

CH4 87% 88%

C2H6 5.6% 5.6 %

C3H8 2.1% 2.2 %

CO2 2.6% 2.6%

H2S 8.5 ppm 8.4 ppm

CH4S 13 ppm 19 ppm

Flow rate (kmol/h)

4256 4262

Feed Gas

Treated Gas

Simulator reproduces Plant Data

UCARSOL™ HYBRID 701 REGENERATOR

Component Actual Plant (molar)

Simulated (molar)

CH4 Flow rate (kmol/h)

2.0 1.9

CO2 Flow rate (kmol/h)

113 117

H2S Flow rate (kmol/h)

172 174 Variable Actual Plant Simulated

Reboiler Duty (GJ/h)

51±5 47

Condenser Temperature (deg C)

54.7 54.7

Reflux Flow (m3/h)

4.27±0.28 4.58

Simulator reproduces Plant Data

Actual Plant Data Comparison

West Texas is Hot and Dry!

•  >130˚F lean amine temp •  Avoids corrosion issues caused

by primary and secondary amines

•  Formulated blends •  Tailored to a customer’s unique

requirements

•  New fill or online conversion

•  For geographies and designs where ambient temperature prevents low H2S treat and cooling water is not available.

•  UCARSOL™ HT is designed for deeper H2S treat in high temperature environments

TEG removes water from gas, but when pH is low it causes corrosion.

DESITHERM™ Formulated TEG Dessicant Significantly Better pH Stability vs TEG

Hot Oils Selection - Synthetics

• Much higher stability and longer life vs. Mineral oils. •  Ideal for offshore and remote locations.

DOWTHERMTM/SYLTHERM † Fluids

† Trademark of Dow Corning Corporation

< http://www.dow.com/heattrans/fluidfile/fluidfile.htm>

Dow Oil, Gas and Mining

•  Drilling •  Cementing •  Stimulation

•  Phase separation •  Asset integrity •  Flow assurance

•  Gas injection •  Chemical flooding •  Thermal recovery

applications

•  Offshore flow assurance

•  Gas recompression

•  Gas dehydration •  Gas compressor

engines •  Gas pipeline line

heaters

•  Onshore and offshore gas processing

•  LNG •  Gasification •  Acid gas

enrichment/sulfur plants

•  Ammonia synthesis

•  Acid gas removal •  LPG treating •  Isomerization and

reformer regeneration

•  Heat transfer

Our brands: •  EMBARK™ •  CELLOSIZE™ •  ANTISOL™ •  POLYOX™

•  DEMTROL™ •  ROMAX™ •  ACCENT™ •  AQUCAR™

ELEVATE™ ROMAX™ DOW FILMTEC™ DOW IntegraPac™

•  NEPTUNE™ •  HYPERLAST™ •  NORKOOL™ •  DESITHERM™

•  UCARSOL™ •  SELEXOL™ •  NORKOOL™

DESITHERM™ •  DOWTHERM™ •  SYLTHERM† •  SulFerox®

•  UCARSORB™

•  AMINE MANAGEMENTSM Program

•  UCARSOL™ •  SELEXOL™ •  UCARSEP™ •  ISOFORM™

Thank You