H2S Measurement in Crude

H S Measurement in CrudeH2SMeasurementinCrude

COQA MeetingCOQAMeetingMarch1,2012H t TXHouston,TX

1

HH22S Measurement in CrudeS Measurement in CrudeHH22SMeasurementinCrudeSMeasurementinCrude

Project ObjectivesProjectObjectives Testingframeworkforanalysisandsampling6Provide most accurate H2S values6ProvidemostaccurateH2Svalues6Reduceanalyticalerror,technicianvariability

Educate transportation operatorsEducatetransportationoperators6H2Spotentialofcrudesinsystem6Healthandsafetyissues

Alloperatorsusingthesametestmethodandcomparingthesamedata

2


AvailableTestingMethodologiesg g

ASTMD57056 f6Easytoperform,lowequipmentcosts6OnlymeasuresvaporphaseH2S

3


AvailableTestingMethodologies,cont.g g , ASTMD56236Providesspeciationbetween(sulfurcompounds)6Hi h i ($80K)6Highequipmentcosts($80K)6Requiresexperiencedtechniciantooperate.6Notpracticalformostterminaloperators

4


Available Testing Methodology contAvailableTestingMethodology,cont.UOP1636Easytoperform,lowequipmentcostsy p , q p6Datainterpretationrequiresskilledtechnician6OnlymeasuresliquidphaseH2S

17ppm 34ppm

5


Available Testing Methodology contAvailableTestingMethodology,cont.IP5706Modified for use with Crude Oils6ModifiedforusewithCrudeOils6Operatorindependent,littletechnicaltrainingrequired.NOinterpretationrequired.6MeasuresbothliquidandvaporphaseH2S

6

Method Scope ComparisonMethod Scope ComparisonMethodScopeComparisonMethodScopeComparison

D5623 Applicabletodistillate,gasolinemotorfuelsandotherpetroleumliquidswithaFBP


Analysis ProtocolAnalysisProtocol6Aseachsamplewasopenedthefullsetoftestswascompletedimmediately,priortoopeningthenextsample.

6Sampleswererefrigerateduntilopened.

8

Analysis DataAnalysis DataAnalysisDataAnalysisDataSampleDescription ASTMD445 ASTMD5002 ASTMD5191 UOP163 ASTMD5705 ASTMD5623 IP570

Viscosity@20C Density@15C VaporPressure H2S Mercaptan H2S Vapor H2S H2Sy@ y @ p 2 p 2 p 2cSt kg/m3 DVPE(kPa) mg/kg ppmv mg/kg mg/kg

WTS 19.65 877.6 35.1 36 0 1 24.2 0.54

TK1106 13.82 856.9 16.7 16 0 0 15.0 0.00

Peace Sour 4 91 816 2 54 9 110 0 >2000 74 9 124 6PeaceSour 4.91 816.2 54.9 110 0 >2000 74.9 124.6PeaceSour 126 0 >2000 67.6 108.2PeaceSour 127 0 >2000 70.8 126.9

OSA 6.311 865.2 20.6 0 8 0 0.0 0.00

Koch 9 392 839 4 57 3 104 0 >2000 76 7 167 2Koch 9.392 839.4 57.3 104 0 >2000 76.7 167.2Koch 105 0 >2000 61.0 247.0Koch 104 0 >2000 52.3 204.5

CRL403 1.345 749.7 85.5 26 237 241 17.2 8.6CRL403 27 248 295 19.1 16.4CRL 403 28 234 268 17 7 6 4CRL403 28 234 268 17.7 6.4

CPM781 1.279 762.2 72.3 16 40 0.5 14.2 0.02CPM781 17 38 1 14.2 0.03CPM781 11 56 2 12.2 0.01

9

CPR025 1.028 750.3 80.7 34 222 11 17.2 0.09CPR025 34 220 12 11.9 0.09CPR025 34 225 11 13 0.10

H2S Measurement in CrudeH2S Measurement in CrudeH2SMeasurementinCrudeH2SMeasurementinCrude

Potential InterferencesPotentialInterferences Chlorides(halides?) UOP163inflectionpointinterpretation

6 Davetoprovidecopiesofinflectioncurvestoall6 Curveswereactuallyverycleanandrelativelyeasytointerpret

Corrosion inhibitors (nitrogen based)Corrosioninhibitors(nitrogenbased) Mercaptans? D5623segregatesthemercaptansandIP570VPPdevelopmentwasbasedonremovingmercaptan andlighthydrocarboninterferences

Scavengers waterbasedcations?(HS scavengersretaining partial H2S in ionic state)retainingpartialH2Sin ionic state)

10

H2SMeasurementinCrudeH2SMeasurementinCrude

Follow Up Discussionsz Agreed that future testing would include SAPA (saturates,

aromatics, polars, asphaltenes), C30+ compositional analysis, Karl Fischer titration, and nitrogen testing by D4629

z Agreed that future testing would be done on one only sample from the triplicate sample sets

z Agreed that samples to be tested would be CPR (Peacez Agreed that samples to be tested would be CPR (Peace condensate [Enbridge EP], CPM (Pembina Drayton Valley condensate [Enbridge EP]), CRL (Plains Midstream Rangeland condensate [Enbridge EP]), PEM (Pembina sweet a ge a d co de sate [ b dge ]), ( e b a sweetcrude [Kinder Morgan]), and TK1106 [Coffeyville Resources, KS],

z Agreed to proceed with testing matrix ASAP based on Davez Agreed to proceed with testing matrix ASAP based on Dave Murrays estimate of ~$5,000 analytical costs and end of February completion estimate

H2S Measurement in CrudeH2S Measurement in CrudeH2SMeasurementinCrudeH2SMeasurementinCrude

Does anyone in COQA audience have anyDoesanyoneinCOQAaudiencehaveanyexperience/insightthatcouldstreamlineor focus our efforts??orfocusourefforts?? Example:H2Sscavengers6Are there naturally occurring varieties??6Aretherenaturallyoccurringvarieties??6Wouldaminebasedcorrosioninhibitors,bugkillers,orsomethingelsebeinterfering??

[email protected]

12

H2S Measurement in Crude

Documents

Transcript of H2S Measurement in Crude