李亮
LI Liang

• 1:中国石化胜利油田勘探开发研究院

摘要(Abstract)：

为了探索孤岛油田稠油注CO_2增油机理,采用PVT和对称悬滴形状分析技术,开展了不同温度和压力下CO_2在稠油中溶解度、体积系数、密度和CO_2—水—稠油间界面张力及其影响因素研究,通过实验结果阐述了CO_2与相关参数的变化规律。通过实验发现孤岛油田稠油在溶解CO_2后,能强烈抽提轻烃形成萃取作用;压力在18 MPa以上有明显的油滴"爬杆"现象。矿场应用效果明显。
In order to explore the heavy oil enhancing mechanism by the carbon dioxide injection in Gudao,through adopting the PVT barrel and symmetric hanging drop shape analyzing technology,the following studies were conducted for the CO_2 solubility,volume factor,density,CO_2-water-heavy oil interfacial tension and their influencing factors under different temperatures and pressures,and moreover the changed laws between the CO_2 and related parameters were discussed with the help of the experimental results. The experiments show that after the solution of the CO_2 in the heavy oil of Gudao Oilfield,the light hydrocarbons can be strongly extracted,thus the extracting action has been effectively displayed; and furthermore the obvious "pole climbing phenomenon" of the oil drops is presented for the pressure above 18 MPa. In a word,the field application effects are significant.

关键词(KeyWords)： 孤岛油田;二氧化碳;溶解度;降黏率;增油机理
Gudao Oilfield;CO2/carbon dioxide;solubility;viscosity reduction ratio;oil enhancing/increasing mechanism

Abstract:

Keywords:

基金项目(Foundation): 基金项目:胜利油田“孤岛油田不动管柱注二氧化碳技术研究与应用”(ZL201220446578.0)

作者(Author): 李亮
LI Liang

参考文献(References)：

• [1]陶磊.超稠油油藏三元复合吞吐技术研究[D].北京:中国石油大学,2009.
• [2]秦延才,李微,周淑娟,等.陈373块薄层稠油油藏N2和CO2补充地层能量可行性研究[J].科学技术与工程,2013,13(14):56-60.
• [3]黄亮,石军太,李彦尊,等.稠油油藏热采水平井均衡采油新方法[J].油气地质与采收率,2016,23(2):115-120.
• [4]王建海,李娣,曾文广,等.塔河缝洞型油藏氮气+二氧化碳吞吐先导试验[J].大庆石油地质与开发,2015,34(6):110-113.
• [5]陈国利.二氧化碳驱开发效果评价方法[J].大庆石油地质与开发,2016,35(1):92-96.
• [6]赵淑霞,王锐,吕成远,等.溶解作用对低渗油藏CO2驱两相相渗的影响[J].大庆石油地质与开发,2016,35(3):126-129.
• [7]程紫燕.水平井蒸汽驱影响因素及作用机理[J].大庆石油地质与开发,2015,34(3):147-151.
• [8]刘义坤,刘扬,王凤娇,等.江37区块浅薄层稠油油藏蒸汽吞吐参数优化[J].特种油气藏,2015,22(6):90-92.
• [9]李雪,卢祥国,周彦霞.渤海NB35-2油田“调驱+热采”提高采收率技术[J].大庆石油地质与开发,2015,34(2):130-134.
• [10]朱学东.埕东油田埕南深层超稠油开采配套工艺技术[J].石油天然气学报,2013,35(1):138-140.
• [11]姜涛,肖林鹏,杨明强,等.超深层稠油油藏注天然气吞吐开发矿场试验[J].大庆石油地质与开发,2008,27(5):101-104.