塔河油田高温高盐苛刻油藏高效起泡剂优选与性能评价

田疆; 杨喆; 方吉超; 赵健慧; 王凯; 丁琴芳

doi:10.3981/j.issn.1000-7857.2015.04.011

科技导报 >

2015 , Vol. 33 >Issue 4: 66 - 71

DOI: https://doi.org/10.3981/j.issn.1000-7857.2015.04.011

研究论文

塔河油田高温高盐苛刻油藏高效起泡剂优选与性能评价

田疆 ,
杨喆 ,
方吉超 ,
赵健慧 ,
王凯 ,
丁琴芳

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1. 中国石油化工股份有限公司西北油田分公司, 乌鲁木齐830000;
2. 中国石油大学(华东)重质油国家重点实验室, 青岛266580

田疆,工程师,研究方向为采油工艺研究与管理,电子信箱:tianj.xbsj@sinopec.com

收稿日期: 2014-12-12

修回日期: 2015-01-19

网络出版日期: 2015-03-19

基金资助

国家自然科学基金项目(51174221);高等学校博士学科点专项科研基金项目(2012013311001010)

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Optimization and performance evaluation of high efficiency foaming agent for high-temperature and high-salinity harsh reservoir of Tahe Oilfield

TIAN Jiang ,
YANG Zhe ,
FANG Jichao ,
ZHAO Jianhui ,
WANG Kai ,
DING Qinfang

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1. Sinopec Northwest Oilfield Branch, Urumqi 830000, China;
2. State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Qingdao 266580, China

Received date: 2014-12-12

Revised date: 2015-01-19

Online published: 2015-03-19

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摘要

为进一步提高塔河油田高温高盐油藏的采收率,探索高温高盐油藏泡沫驱油的可行性,通过Ross-Miles 法,以泡沫综合值为评价指标优选了耐高温耐高盐起泡剂体系,评价其稳定性、表/界面张力和高温高压下泡沫起泡性能,并通过物理模拟实验研究了泡沫对地层的适应性和驱油效果。实验结果表明:优选的起泡剂为HTS-1 两性表面活性剂,高温高盐稳定性好,且能使油水界面张力降低到10^-1 mN/m 数量级;在高压高温下起泡剂的起泡和稳泡性能大幅度提高,且随着压力的增加,起泡性能有进一步增加的趋势;单管岩心物理实验证明泡沫对地层有较广的适应性,在一定地层渗透率范围下,泡沫的封堵性能随渗透率的增大而增强,超过一定渗透率后泡沫的封堵性能下降;驱油实验显示出泡沫能有效封堵高渗层,实现液流转向,并能提高洗油效率,采收率增值达到17%左右。

关键词： 塔河油田; 高温高盐; 高硬度; 起泡剂; 提高采收率

本文引用格式

田疆 , 杨喆 , 方吉超 , 赵健慧 , 王凯 , 丁琴芳 . 塔河油田高温高盐苛刻油藏高效起泡剂优选与性能评价[J]. 科技导报, 2015 , 33(4) : 66 -71 . DOI: 10.3981/j.issn.1000-7857.2015.04.011

Abstract

This paper explores the feasibility of foam flooding for high-temperature and high-salinity reservoir in Tahe Oilfield to improve the oil recovery. The foaming agent was selected by means of Ross-Miles method with the evaluation indexes of foam comprehensive value, and its stability, surface/interfacial tension and foaming properties under high temperature and high pressure were evaluated. Its stratum adaptability and oil displacement efficiency were also evaluated. The results indicate that under the hightemperature and high-salinity conditions in Tahe Oilfield, the optimal foaming agent was amphoteric surfactant HTS-1, which had satisfactory stability and reduced the oil-water interfacial tension to 10^-1 mN/m. It has improved foaming and foam stability at high temperature and high pressure, and the higher the pressure, the better the foam stability. Single core experiment demonstrated that foam flooding has wide stratum adaptability, and the foam plugging performance will be improved with the increase of permeability and be reduced over a certain permeability. Oil displacement experiments show that foam can plug the high-permeability layer, leading to fluid diverting and higher oil displacement efficiency, and increase water flooding recovery by 17%.

Key words： Tahe Oilfield; high temperature and high salinity; high hardness; foaming agent; improved oil recovery

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