Manual Of Petroleum Measurement . - ASTM International

Manual of PetroleumMeasurement StandardsChapter 11—Physical Properties DataSection 2, Part 4—Temperature Correction for the Volumeof NGL and LPGTables 23E, 24E, 53E, 54E, 59E, and 60EASTM Technical Publication [Stock No. PETROLTBL-TP27]GPA Technical Publication TP-27FIRST EDITION, SEPTEMBER 2007

Manual of PetroleumMeasurement StandardsChapter 11—Physical Properties DataSection 2, Part 4—Temperature Correction for the Volumeof NGL and LPGTables 23E, 24E, 53E, 54E, 59E, and 60EASTM Technical Publication [Stock No. PETROLTBL-TP27]GPA Technical Publication TP-27Measurement CoordinationFIRST EDITION, SEPTEMBER 2007Prepared forAmerican Petroleum Institute1220 L Street, NWWashington, D.C. 20005ASTM International100 Barr Harbor DriveWest Conshohocken, PA 19428Gas Processors Association6526 E. 60th StreetTulsa, OK 74145

ForewordFor custody transfer purposes, natural gas liquid (NGL) and liquefied petroleum gas (LPG)volumes are generally stated at a fixed base temperature and saturation pressure. As most volumetransfers occur at temperatures and pressures other than standard conditions, these volumes areadjusted to standard conditions through the use of correction factors.This document presents a new method to calculate temperature correction factors. With thepublication of this document, previous API, ASTM and GPA documents containing NGL andLPG temperature correction factors should no longer be used. The document is specifically titledas being suitable for NGL and LPG liquids. Light hydrocarbon mixtures containing significantquantities of methane, carbon dioxide and nitrogen which have density ranges which overlapthose contained in these tables can be encountered. However, the two-fluid correlation which isthe basis of these tables was not calibrated for such mixtures.The actual Standard represented by this report consists of the explicit implementationprocedures. Sample tables and other examples created from a computerized version of theseimplementation procedures are presented within. However, these are for examples only and donot represent the Standard.Nothing contained in any API publication is to be construed as granting any right, by implicationor otherwise, for the manufacture, sale, or use of any method, apparatus, or product covered byletters patent. Neither should anything contained in the publication be construed as insuringanyone against liability for infringement of letters patent.This document was produced under API standardization procedures that ensure appropriatenotification and participation in the developmental process and is designated as an API standard.Questions concerning the interpretation of the content of this publication or comments andquestions concerning the procedures under which this publication was developed should bedirected in writing to the Director of Standards, American Petroleum Institute, 1220 L Street,N.W., Washington, D.C. 20005. Requests for permission to reproduce or translate all or any partof the material published herein should also be addressed to the director.Generally, API standards are reviewed and revised, reaffirmed, or withdrawn at least every fiveyears. A one-time extension of up to two years may be added to this review cycle. Status of thepublication can be ascertained from the API Standards Department, telephone (202) 682-8000. Acatalog of API publications and materials is published annually and updated quarterly by API,1220 L Street, N.W., Washington, D.C. 20005.Suggested revisions are invited and should be submitted to the Standards and PublicationsDepartment, API, 1220 L Street, NW, Washington, D.C. 20005, standards@api.org.ii

API Special NotesAPI publications necessarily address problems of a general nature. With respect to particularcircumstances, local, state, and federal laws and regulations should be reviewed.Neither API nor any of API's employees, subcontractors, consultants, committees, or otherassignees make any warranty or representation, either express or implied, with respect to theaccuracy, completeness, or usefulness of the information contained herein, or assume anyliability or responsibility for any use, or the results of such use, of any information or processdisclosed in this publication. Neither API nor any of API's employees, subcontractors,consultants, or other assignees represent that use of this publication would not infringe uponprivately owned rights.API publications may be used by anyone desiring to do so. This publication is an updated versionof TP-25. Previous editions of this publication were numbered TP-25. Users of this standardshould take efforts to ensure they are using the most current version of this publication. Everyeffort has been made by the Institute to assure the accuracy and reliability of the data containedin them; however, the Institute makes no representation, warranty, or guarantee in connectionwith this publication and hereby expressly disclaims any liability or responsibility for loss ordamage resulting from its use or for the violation of any authorities having jurisdiction withwhich this publication may conflict.API publications are published to facilitate the broad availability of proven, sound engineeringand operating practices. These publications are not intended to obviate the need for applyingsound engineering judgment regarding when and where these publications should be utilized.The formulation and publication of API publications is not intended in any way to inhibit anyonefrom using any other practices.Any manufacturer marking equipment or materials in conformance with the markingrequirements of an API standard is solely responsible for complying with all the applicablerequirements of that standard. API does not represent, warrant, or guarantee that such productsdo in fact conform to the applicable API standard.All rights reserved. No part of this work may be reproduced, stored in a retrieval system, or transmittedby any means, electronic, mechanical, photocopying, recording, or otherwise, without prior writtenpermission from the publisher.Copyright 2007 American Petroleum Institute, Gas Processors Associationiii

ASTM NoteThis publication does not purport to address all of the safety concerns, if any, associated with itsuse. It is the responsibility of the user of this publication to establish appropriate safety andhealth practices and determine the applicability of regulatory limitations prior to use.iv

GPA DisclaimerNeither the GPA nor any person acting on behalf of the GPA makes any warranty, guarantee, orrepresentation, express or implied, with respect to the accuracy, completeness, or usefulness ofthe information contained in this report. The GPA hereby expressly disclaims any liability orresponsibility for loss or damage resulting from the use of any apparatus, method, or processdisclosed in this report; and for the infringement of any patent or the violation of any federal,state, or municipal law or regulation arising from the use of, any information, apparatus, method,or process disclosed in this report.All rights reserved. No part of this work may be reproduced, stored in a retrieval system, or transmittedby any means, electronic, mechanical, photocopying, recording, or otherwise, without prior writtenpermission from the publisher.Copyright 2007 American Petroleum Institute, Gas Processors Associationv

Table of ContentsForeword . iiAPI Special Notes . iiiASTM Note. ivGPA Disclaimer .vTable of Contents. viNomenclature. viii1 Introduction.12 Scope.23 Significant Digits .44 Comparison to the Previous Standard.45 Implementation Procedures .95.1CTL (Table 24) and Relative Density (Table 23) for NGL and LPG using a60 F Base Temperature .95.1.1Implementation Procedure for Table 24E (60 F Basis).95.1.1.1Inputs and Outputs . 95.1.1.2Outline of Calculations . 95.1.1.3T24 Implementation Procedure. 105.1.1.4Examples for Section 5.1.1 (Table 24E). 155.1.2Implementation Procedure for Table 23E (60 F Basis). 335.1.2.1Inputs and Outputs . 335.1.2.2Outline of Calculations . 335.1.2.3T23 Implementation Procedure. 345.1.2.4Examples for Section 5.1.2 (Table 23E). 425.2CTL (Table 54) and Density (Table 53) for NGL and LPG using a 15 C BaseTemperature .615.2.1Implementation Procedure for Table 54E (15 C Basis) . 615.2.1.1Inputs and Outputs . 615.2.1.2Outline of Calculations . 615.2.1.3T54 Implementation Procedure. 615.2.1.4Examples for Section 5.2.2 (Table 54E). 655.2.2Implementation Procedure for Table 53E (15 C Basis) . 835.2.2.1Inputs and Outputs . 835.2.2.2Outline of Calculations . 835.2.2.3T53 Implementation Procedure. 835.2.2.4Examples for Section 5.2.2 (Table 53E). 85vi

5.3CTL (Table 60) and Density (Table 59) for NGL and LPG using a 20 C BaseTemperature . 1015.3.1Implementation Procedure for Table 60E (20 C Basis) . 1015.3.1.1Inputs and Outputs . 1015.3.1.2Outline of Calculations . 1015.3.1.3T60 Implementation Procedure. 1015.3.1.4Examples for Section 5.3.1 (Table 60) . 1055.3.2Implementation Procedure for Table 59E (20 C Basis) . 1235.3.2.1Inputs and Outputs . 1235.3.2.2Outline of Calculations . 1235.3.2.3T59 Implementation Procedure. 1235.3.2.4Examples for Section 5.3.2 (Table 59E). 1266Sample Sections of Printed Tables .1427References.149vii

NomenclatureA, B, CCTLh2k1, k2, k3, k4TBTBKTcTc,refTFTr,xTxV60/VTxXZcα, β, ρ20ρ satsatρ 60ρTsatparameters in Section 5.1.2 quadratic equationtemperature correction factorscaling factorparameters in saturation density equationbase temperature (60 F, 15 C, or 20 C)base temperature (288.15 K, or 293.15 K)fluid critical temperature (K)reference fluid critical temperature (K)observed measurement temperature ( F or C)reduced observed temperatureobserved temperature (K)ratio of volume at 60 F to volume at temperature Tx. Is the basic definition of CTLinterpolating factorcritical compressibility factorparameters in Section 5.1.2 quadratic equationinterpolation variableparameter in saturation density equationrelative density at observed temperaturerelative density at the observed temperature corresponding to the upper bound forthe 60 relative densityrelative density at the observed temperature corresponding to the lower bound forthe 60 relative densityrelative density at the observed temperature corresponding to the intermediate 60 relative density used in Section 5.1.2 iteration proceduretrial relative density at the observed temperature used in Section 5.1.2 iterationprocedurerelative density at the base temperature, TBrelative density at a base temperature of 60 Frelative density at the observed temperature, Txupper bound for the observed fluid’s 60 relative densitylower bound for the observed fluid’s 60 relative densityintermediate 60 F relative density value used in Section 5.1.2 iteration proceduretrial 60 F relative density value used in Section 5.1.2 iteration procedurecritical molar density (gram-mole/L)density at a base temperature of 60 F (kg/m3)density at a base temperature of 15 C (kg/m3)density at a base temperature of 20 C (kg/m3)saturation molar density (gram-mole/L)saturation molar density at 60 F (gram-mole/L)saturation molar density at observed temperature (gram-mole/L)viii

. 5VTGGV 099CUJKPIVQP &% 75# #FFKVKQPCN EQRKGU CTG CXCKNCDNG VJTQWIJ *52JQPG 1TFGTU 6QNN HTGG KP VJG 7 5 CPF %CPCFC .QECN CPF PVGTPCVKQPCN(CZ 1TFGTU 1PNKPG 1TFGTU INQDCN KJU EQO PHQTOCVKQP CDQWV #2 2WDNKECVKQPU 2TQITCOU CPF 5GTXKEGUKU CXCKNCDNG QP VJG YGD CV YYY CRK QTIProduct No. H1102041

viii Nomenclature A, B, C parameters in Section 5.1.2 quadratic equation CTL temperature correction factor h2 scaling factor k1, k2, k3, k4 parameters in saturation density equation TB base temperature (60 F, 15 C, or 20 C) TBK base temperature (288.15 K, or 293.15 K) Tc fluid critical temperature (K) Tc,ref reference fluid critical temperature (K) TF observed measurement temperature ( F .