·16·天津科技第50卷第2期第50卷第2期2023年2月Vol.50No.2Feb.2023天津科技TIANJINSCIENCE&TECHNOLOGY应用技术海上油气田伴生气产量的修正及其意义陈佳,罗阳,胡红亮(中海石油(中国)有限公司天津分公司天津300459)摘要:海上油气田普遍使用油气计量分离器对油井的伴生气进行计量,但此方法往往忽略了溶解在原油中的伴生天然气,以至上游计量结果难以真实有效地反映实际伴生气产量,与下游终端接收的天然气产量存在较大的误差。而由于伴生气计量结果较实际偏低,将有可能出现混输海管和生产处理设备超设计情况而不自知,存在安全隐患。通过文献调研得到天然气溶解度在不同压力及温度下的关系式,用于计算在油气计量分离器运行工况下伴生天然气在原油中的溶解度,进而得到溶解在原油中伴生天然气体积,并通过计算结果对伴生天然气产量系数进行修正,从而更为准确地反映实际伴生气产量。关键词:海上油气田天然气溶解度溶解气油比伴生天然气产量中图分类号:TE83文献标志码:A文章编号:1006-8945(2023)02-0016-04ProductionCorrectionofAssociatedGasinOffshoreOilFieldandItsSignificanceCHENJia,LUOYang,HUHongliang(TianjinBranch,CNOOCCo.,Ltd.,Tianjin300459,China)Abstract:Offshoreoilandgasfieldsgenerallyuseoil-gasmeteringseparatortomeasuretheassociatedgasofoilwells,butthenaturalgasproductionmeasuredbythismethodoftenignorestheassociatedgasdissolvedincrudeoil.Theupstreammeteringresultsaredifficulttotrulyandeffectivelyreflecttheactualassociatedgasproduction,andthereisalargeerrorwiththenaturalgasproductionreceivedbythedownstreamterminal.Inthiscase,themeasurementresultofassociatedgasislowerthantheactualsituation,anditispossiblethatthemixedtransportationpipelineandproductionandtreatmentequipmentexceedthedesignwithoutknowingit,whichhaspotentialsafetyhazards.Throughliteratureresearch,thispaperobtainstherelationshipofnaturalgassolubilityunderdifferentpressuresandtemperatures,calculatesthesolubilityofassociatednaturalgasincrudeoilundertheoperatingconditionsofoil-gasmeteringseparator,andthenobtainsthevolumeofassociatednaturalgasdissolvedincrudeoil,andcorrectsthecoefficientofassociatednaturalgasproductionthroughthecalculationre...