海上油气田伴生气产量的修正及其意义

天津科技 ›› 2023, Vol. 50 ›› Issue (2): 16-19.

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

收稿日期:2023-02-07 出版日期:2023-02-25 发布日期:2023-12-27

Production Correction of Associated Gas in Offshore Oil Field and Its Significance

CHEN Jia, LUO Yang, HU Hongliang

Tianjin Branch,CNOOC <China> Co.,Ltd.,Tianjin 300459,China

Received:2023-02-07 Online:2023-02-25 Published:2023-12-27

摘要/Abstract

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

Abstract: Offshore oil and gas fields generally use oil-gas metering separator to measure the associated gas of oil wells,but the natural gas production measured by this method often ignores the associated gas dissolved in crude oil. The upstream metering results are difficult to truly and effectively reflect the actual associated gas production,and there is a large error with the natural gas production received by the downstream terminal. In this case,the measurement result of associated gas is lower than the actual situation,and it is possible that the mixed transportation pipeline and production and treatment equipment exceed the design without knowing it,which has potential safety hazards. Through literature research,this paper obtains the relationship of natural gas solubility under different pressures and temperatures,calculates the solubility of associated natural gas in crude oil under the operating conditions of oil-gas metering separator,and then obtains the volume of associated natural gas dissolved in crude oil,and corrects the coefficient of associated natural gas production through the calculation results,so as to reflect the actual associated gas production more accurately.

Key words: offshore oil and gas fields, natural gas solubility, dissolved gas-oil ratio, associated natural gas production

中图分类号:

TE83

陈佳, 罗阳, 胡红亮. 海上油气田伴生气产量的修正及其意义[J]. 天津科技, 2023, 50(2): 16-19.

CHEN Jia, LUO Yang, HU Hongliang. Production Correction of Associated Gas in Offshore Oil Field and Its Significance[J]. TIANJIN SCIENCE & TECHNOLOGY, 2023, 50(2): 16-19.

参考文献

[1] 谢晓勤,徐文超,廖雍.油气分离设备在油气集输中的应用[J].石油和化工设备,2012,15(1):33-35.
[2] 原理. 试论油气分离设备在油气集输中的应用[J].中国石油石化,2016(23):22-23.
[3] 徐鑫. 海上油气分离技术的应用[J].化工管理,2021(13):193-194.
[4] 孙纪富,耿拥军,刘家恒.WS 型油气水三相分离器设计与应用[J].胜利油田职工大学学报,2007(3):62-63.
[5] 鞠微. 卧式沉降三相分离器设计及数值研究[D].大连:大连理工大学,2014.
[6] 李巍,于同川,张晓敏,等.重力式油气水三相分离器工艺设计研究[J].节能技术,2016,34(5):477-480,3.
[7] 刘利群. 油气分离设备天然气量的计算[J].油田地面工程,1994(5):13-14 .
[8] 夏炳焕. 天然气在原油中的溶解性及溶气原油流变性研究[D].青岛:中国石油大学(华东),2010.
[9] 李秉繁,刘刚,陈雷.CH.在原油体系中溶解规律及影响机理[J].化工进展,2021,40(8):4205-4222.
[10] Standing M B.A Pressure-volume-temperature cor relation for mixtures of California Oils and Gases[J]. Drilling & Production Practice,1947.
[11] Vazquez M,Beggs H D.Correlations for fluid physical property prediction[C]// SPE Annual Fall Technical Con ference and Exhibition,1977.
[12] Brown KE.The Technology of artificical lift methods[M].Tulsa:Penn Well Publishing Company,1977.
[13] 薛海涛,刘灵芝,周丽华,等.天然气在大庆原油中的溶解度[J].大庆石油学院学报,2001,25(2):12-15,103.
[14] 薛海涛,卢双舫,付晓泰,等.溶气原油体积系数、密度的预测模型[J].地球化学,2003(6):613-618.
[15] 谢龙,郭绪强,陈光进,等.计算原油体积系数的状态方程法[J].中国石油大学学报:自然科学版,2007(3):137-139,147.
[16] 王照亮,张煜,张建,等.油田集输系统联合站能流诺莫图与能流分析[J].化工进展,2009(S1):450-451.
[17] 刘沺,杨飞,李传宪,等.饱和溶气原油溶解度与黏度预测模型的建立[J].天然气与石油,2017,35(4):12-20.
[18] 魏纳,席永钊,刘安琪,等.一种快速计算溶解油气比的工程实用方法[J].天然气工业,2019,39(4):90-95.