一种实用的CO<sub>2</sub>溶解气驱岩心洗油方法

韩学辉; 杨龙; 王洪亮; 王雪亮; 房涛; 张娟娟

doi:10.11781/sysydz201301111

一种实用的CO₂溶解气驱岩心洗油方法

doi: 10.11781/sysydz201301111

1.
中国石油大学(华东) 地球科学与技术学院, 山东青岛 266580
2. 中国石油天然气股份有限公司新疆油田公司实验检测研究院, 新疆克拉玛依 834000
3. 中国石油天然气股份有限公司西部钻探工程有限公司测井公司, 新疆克拉玛依 834000

基金项目: 山东省自然科学基金(Y2008E08);国家油气专项(2011ZX05009-003)联合资助。

详细信息

作者简介:
韩学辉(1974- ),男,博士,副教授,硕士生导师,从事储层岩石物理研究。E-mail:hxhlogging@yahoo.com.cn。

中图分类号: TE135.1
计量
- 文章访问数: 1755
- HTML全文浏览量: 49
- PDF下载量: 1088
- 被引次数: 0
出版历程
- 收稿日期: 2012-02-14
- 修回日期: 2012-11-23
- 刊出日期: 2013-01-28

A practical core cleaning method based on CO₂ dissolved gas drive

1.
School of Geosciences, China University of Petroleum, Qingdao, Shandong 266555, China
2. Research Institute of Experiment and Detection, Xinjiang Oilfield Company, PetroChina, Karamay, Xinjiang 834000, China
3. Well Logging Company, Western Drilling Engineering Corporation of, PetroChina, Karamayi, Xinjiang 834000, China

摘要

摘要: 为了提高岩心的洗油效率,开发了一种实用的CO₂溶解气驱岩心洗油方法。该方法在Stewart设计的CO₂溶解气驱方法的基础上,增加了洗油室抽真空、CO₂预清洗、溶剂回收3个步骤。使用自行研制的DGO-1型CO₂溶解气驱洗油装置,实验考察了新方法的洗油效果。6块不同孔隙度、渗透率的岩心的洗油结果表明,经过6~10次CO₂溶解气驱后,岩心荧光级别均小于3级,孔隙度和渗透率趋于稳定,可满足石油天然气行业标准SY/T 5336-2006的要求,且洗油时间(2~3天)较常规脂肪抽提洗油(2~3周或更长)有大幅度减少。该方法洗油原理清楚,洗油装置简单,易于操作,洗油效率高,清洁环保,推荐作为一种实用方法在岩石物理实验室推广使用。
- CO₂溶解气驱 /
- 岩心洗油 /
- CO₂预清洗 /
- 荧光级别 /
- 孔隙度 /
- 渗透率
Abstract: In order to improve the efficiency of core cleaning, a practical core cleaning method based on CO₂ dissolved gas drive was developed. The method added vacuum-pumping, CO₂ pre-cleaning and solvent recovery to the method designed by Stewart in 1952. Then, the effect of core cleaning was observed through a series of experiment with the employment of DGO-1 type CO₂ dissolved gas drive core cleaning device which was self-made. The results of core cleaning of 6 rocks with different porosities and permeabilities showed that the fluorescence level was less than 3 and the porosity and permeability were steady after 6-10 circles. The effect met the standard SY/T 5336-2006. The period of core cleaning with the employment of the new method was 2-3 days, which was less than that of Soxhlet extraction device (2-3 weeks or longer). Since the method had the characteristics of clear principle, simple device, good operability, high efficiency and was environmental-friendly, it was recommended to popularize in rock physics lab.
- CO₂ dissolved gas drive /
- core cleaning /
- CO₂ pre-cleaning /
- fluorescence level /
- porosity /
- permeability

HTML全文

参考文献(19)

[1]	沈平平,秦积舜.油层物理实验技术[M].北京:石油工业出版社,1995.
[2]	林光荣,邵创国,王小林.洗油时间对低渗特低渗储层孔渗的影响[J].特种油气藏,2005,12(3):86-90.
[3]	朱建,李兴,刘桂阳,等.岩心洗油装置安全节能措施改造[J].石油仪器,2008,22(2):95-96.
[4]	刘宗恩,王建军,王忠平.洗油仪中虹吸管的设计[J].石油仪器,2007,21(1):14-15.
[5]	顾贵成,郭冬梅,马玉东.GGA-1P型洗油仪的研制[J].石油仪器,2000,14(6):29-31.
[6]	王明献.热解样品分析中的重量变化及其影响[J].断块油气田,1995,2(3):29-33.
[7]	赵伦,吴新松.砂岩储集层孔隙度评价的热解失重方法[J].中国石油大学学报:自然科学版,2007,31(5):18-29,27.
[8]	李凯,赵建文,庄丽.盐间非砂岩岩心的钻取、封装及洗油技术:以潜16C、王云11两口井的岩心制备为例[J].江汉石油科技,2007,17(4):4-6.
[9]	陈隅,黄庭芳,刘恩儒.岩石物理学[M].合肥:中国科学技术大学出版社,2009.
[10]	Stewart C R.Cleaning porous media,U.S.patent number 2.November 1952.617-619.
[11]	Conley F R,Burrows D B.A centrifuge core cleaner[J].Journal of Petroleum Technology,1956(10):61-62.
[12]	于宝,宋延杰,韩有信,等.混合泥质砂岩人造岩样的实验测量[J].大庆石油学院学报,2006,30(4):91-94.
[13]	尹遵素,译.人造砂岩的制备(一种环氧树脂方法)及其物理性质[J].江汉石油译丛,1990,18(1):15-18.
[14]	秦佳盛,张春林,张公社.定量荧光录井技术在勘探开发中的应用[J].江汉石油学院学报,2004,6(26):37-39.
[15]	中国石油天然气总公司.SY/T5336-2006.岩心分析方法[S].北京:石油工业出版社,2006.
[16]	Basan P, Hook J R.岩心孔隙度、饱和度、渗透率的测定:困难估计//宋庆原,译.岩心译文集.北京:石油工业出版社,1998:37-45.
[17]	何更生.油层物理[M].北京:石油工业出版社,1994.
[18]	杨贤友,熊春明,李淑白,等.气层敏感性损害实验评价新方法研究[J].天然气工业,2005,25(3):135-137.
[19]	薛芸,袁萍,刘爱武,等.江苏盐城地区气层损害及保护技术研究[J].天然气工业,2002,22(1):14-17.