Lithologic Reservoirs ›› 2014, Vol. 26 ›› Issue (3): 125-130.doi: 10.3969/j.issn.1673-8926.2014.03.021

Previous Articles    

Study on enhancing heavy oil recovery mechanism of antiscaling alkali

TANG Mingguang1， LIU Qinghua1， ZHANG Guicai2， CHEN Lifeng2   

  1. 1. Zhanjiang Branch of CNOOC Ltd.， Zhanjiang 524057， Guangdong， China； 2. College of Petroleum Engineering， China University of Petroleum， Qingdao 266580， Shandong， China
  • Online:2014-06-06 Published:2014-06-06

PDF (PC)

415

Abstract:

The content of calcium and magnesium ions in the formation water in Xiaba block is relatively high, so scaling problem will occur when use conventional alkali agent such as sodium hydroxide and sodium carbonate. This paper investigated the alkaline which has antiscaling effect, and chose NaBO2 which has strong chelating capacity for calcium and magnesium ions to do indoor research and used sandpacks to evaluate its displacement efficiency. The results show that although the dynamic interfacial tension is high, the displacement efficiency during the sandpacks tests is good. During the displacement process, a large differential pressure response appeared when the alkali concentration is high, and the incremental oil recovery increased with the increase of alkali concentration. Microscopic mechanism shows that the alkaline solution penetrates into the crude oil to form water drops inside the oil phase, and those water drops turn into W/O emulsions subsequently, which could block the water channel and inhibit the viscous fingering, leading to the improvement of sweep efficiency.

Key words:  , low permeability； diagenesis； heterogeneity； Ordos Basin

［1］ Wang J，Dong M. A laboratory study of polymer flooding for improving heavy oil recovery［C］. Petroleum Society’s 8th Canadian International Petroleum Conference，Calgary，Albert，2007：178.
［2］ Selby R，Alikhan A A，Farouq Ali S M. Potential of non-thermal methods for heavy oil recovery［J］. Journal of Canadian Petroleum Technology，1989，28（4）：45- 59.
［3］ 车洪昌，任耀宇，刘汉平，等．龙虎泡油田活性水驱油室内实验研究［J］．岩性油气藏，2011，23（2）：128-132.
［4］ Almalik M S，Attia A M，Jang L K. Effects of alkaline flooding on the recovery of Safaniya crude oil of Saudi Arabia［J］. Journal of Petroleum Science and Engineering，1997，17（3/4）：367-372.
［5］ Turksoy U，Bagci S. Improved oil recovery using alkaline solutions in limestone medium ［J］. Journal of Petroleum Science and Engineering，2000，26（1）：105-119.
［6］ 窦立荣，侯读杰，程顶胜，等．高酸值原油的成因与分布［J］．石油学报，2007，28（1）：8-13．
［7］ Pei H，Zhang G，Ge J，et al. Potential of alkaline flooding to enhance heavy oil recovery through water-in-oil emulsification［J］. Fuel，2013，104：284-293.
［8］ Arhuoma M，Yang D，Dong M，et al. Determination of increase in pressure drop and oil recovery associated with alkaline flooding for heavy oil reservoirs［C］. Canadian International Petroleum Conference，Calgary，Alberta，2009.
［9］ Jennings H Y，Johnson C E，McAuliffe C D. A caustic waterflooding process for heavy oils ［J］. Journal of Petroleum Technology，1974，26：1344-1352.
［10］ Berger P D，Lee C H. Improved ASP process using organic alkali ［R］. SPE 99581，2006.
［11］ Flaaten A K，Nguyen Q P，Zhang Jieyuan，et al. ASP Chemical flooding without the need for soft water［R］. SPE 116754，2008.
［12］ Zhang Jieyuan，Nguyen Q P，Flaaten A K，et al. Mechanisms of enhanced natural imbibition with novel chemicals［R］. SPE 113453，2009.
［13］ 李娜.普通稠油超低界面张力驱油体系研究［D］.青岛：中国石油大学（华东），2011.
［14］ Zhang H，Dong M，Zhao S. Which one is more important in chemical flooding for enhanced court heavy oil recovery，lowering interfacial tension or reducing water mobility? ［J］. Energy Fuels，2010，24 (3）：1829-1836.
［15］ Pei H，Zhang G，Ge J，et al. Analysis of microscopic displacement mechanisms of alkaline flooding for enhanced heavy-oil recovery［J］. Energy Fuels，2011，25（10）：4423-4429.
[1] Liang Ning， Zheng Rongcai， Deng Jigang， Jiang Huan， Guo Chunli， Gao Zhiyong. Sedimentary facies and gentle slope model of the Middle Permian Qixia Formation in the northwestern Sichuan Basin [J]. Lithologic Reservoirs, 2016, 28(6): 58-67.
[2] Huang Quanhua， Fu Yunhui， Lu Yun， Chen Chong， Liu Tong. Application of modified unbiased grey model to the prediction of oil and gas field production [J]. Lithologic Reservoirs, 2016, 28(5): 117-122.
[3] Hu Xi， Wang Xingzhi， Li Yizhen，et al. Using log data to calculate the organic matter abundance in shale：a case study from Longmaxi Formation in Changning area, southern Sichuan Basin [J]. Lithologic Reservoirs, 2016, 28(5): 107-112.
[4] Li Fanyi， Di Bangrang， Wei Jianxin， et al. Quantitative study of the effect of cavern width on reflection amplitude of migration section [J]. Lithologic Reservoirs, 2016, 28(5): 113-116.
[5] Zhang Fengqi，Zhang Fengbo,Zhong H ongl i，W ang Le,Ji ao Tao,W u Pengbo . Main controlling factors of the enrichment of Chang7 tightoil of  Yanchang Formationin southern Ganquan area,Ordos Basin [J]. LITHOLOGIC RESERVOIRS, 2016, 28(3): 12-19.
[6] Li Wei，Zhang Juntao 3,Zhu Xiaomin 2,Sun Yipu3,Li Shujun . Characteristics and evolution of the Ordovician dolomite reservoir of Ma 5 member in Fuxian area, Ordos Basin [J]. Lithologic Reservoirs, 2016, 28(3): 58-67.
[7] Tang W u 1,W ang Y i ngm i n 2,Zhong M i hong 3. Sedimentary characteristics and evolution model of delta in backbulge zone:A case study in Sangtamu area [J]. LITHOLOGIC RESERVOIRS, 2016, 28(3): 34-41.
[8] Zhu Songbai，W ang H ongfeng 1,W ang Shengj un,Zhou Y an,Zhao Zhengchao,W u Ji ngqi ng . Hydrothermal activities of Ordovician and its significance for alteration to carbonate reservoirs in Yubei area [J]. Lithologic Reservoirs, 2016, 28(3): 42-47.
[9] Ouyang Xueqi1， Wang Liang2， L iu Feng2， Zheng Rongcai1， Ren Wei1. Sedimentary characteristics of Lower Cretaceous sublacustrine fan in BN block of BG Basin, Central Africa [J]. Lithologic Reservoirs, 2016, 28(3): 86-94.
[10] Huang Chenggang,Yuan Jianying,Wu Liangyu,Zhang Xiaojun,Wu Lirong,Pan Xing. Origin and research methods of lacustrine dolomite [J]. Lithologic Reservoirs, 2016, 28(2): 7-15.
[11] Ji Hongjie,Li Xiaoyan,Tao Huifei,Wang Qi,Wu Tao，Su Long. Pore structure characteristics of Jurassic Toutunhe Formation in eastern slope of Fukang Depression, Junggar Basin [J]. Lithologic Reservoirs, 2016, 28(2): 47-55.
[12] Wang Yang,Li Shutong,Mou Weiwei,Shi Yunhe,Nie Wancai,Yan Cancan. Effect of karst paleogeomorphology of Ordovician on gas-water distribution of Ma 5 4 1 in Wushenqi-Zhidan area [J]. Lithologic Reservoirs, 2016, 28(2): 64-71.
[13] Li Chao,Zhang Liqiang,Zhang Likuan,Wang Peng,Hu Caizhi,Zhang Haisen. Estimation of denudation thickness of Mesozoic strata and paleostructure restoration in Zhenjing area, Ordos Basin [J]. Lithologic Reservoirs, 2016, 28(2): 72-80.
[14] Cheng Han， Hu Wangshui， Li Tao， Hao Jianrong， Zhao Hongyan3. Characteristics of fluid potential and its implication to hydrocarbon migration and accumulation in block A, Lower Congo Basin [J]. Lithologic Reservoirs, 2016, 28(2): 86-72.
[15] Zhang Meiling， Qi Meng， Lin Lili2. Integrated evaluation method of water flooded layer in ultra-low permeability reservoir in peripheral Daqing Oilfield [J]. Lithologic Reservoirs, 2016, 28(2): 93-100.
Viewed
Full text


Abstract

Cited
  Shared   
  Discussed   
[1] HUANG Sijing,HUANG Peipei,WANG Qingdong,LIU Haonian,WU Meng,ZOU Mingliang. The significance of cementation in porosity preservation in deep-buried sandstones[J]. Lithologic Reservoirs, 2007, 19(3): 7 -13 .
[2] LIU Zhen,CHEN Yanpeng,ZHAO Yang,HAO Qi,XU Xiaoming,CHANG Mai. Distribution and controlling factors of hydrocarbon reservoirs in continental fault basins[J]. Lithologic Reservoirs, 2007, 19(2): 121 -127 .
[3] DING Chao，GUO Lan，YAN Jifu. Forming conditions of Chang 6 reservoir in Anding area of Zichang Oilfield[J]. Lithologic Reservoirs, 2009, 21(1): 46 -50 .
[4] LI Yanshan，ZHANG Zhansong，ZHANG Chaomo，CHEN Peng. Application of mercury injection data to Chang 6 reservoir classification in Changqing area[J]. Lithologic Reservoirs, 2009, 21(2): 91 -93 .
[5] LUO Peng,LI Guorong,SHI Zejin,ZHOU Dazhi,TANG Hongwei,ZHANG Deming. Analysis of sequence stratigraphy and sedimentary facies of M aokou Formation in southeastern Sichuan[J]. Lithologic Reservoirs, 2010, 22(2): 74 -78 .
[6] ZUO Guoping， TU Xiaolong， XIA Jiufeng. Study on volcanic reservoir types in Subei exploration area[J]. Lithologic Reservoirs, 2012, 24(2): 37 -41 .
[7] WANG Feiyu. Method to improve producing degree of thermal recovery horizontal wells and its application[J]. Lithologic Reservoirs, 2010, 22(Z1): 100 -103 .
[8] YUAN Yunfeng，CAI Ye，FAN Zuochun，JIANG Yiyang，QIN Qirong， JIANG Qingping. Fracture characteristics of Carboniferous volcanic reservoirs in Hongche fault belt of Junggar Basin[J]. Lithologic Reservoirs, 2011, 23(1): 47 -51 .
[9] YUAN Jianying， FU Suotang， CAO Zhenglin， YAN Cunfeng，ZHANG Shuichang， MA Dade. Multi-source hydrocarbon generation and accumulation of plateau multiple petroleum system in Qaidam Basin[J]. Lithologic Reservoirs, 2011, 23(3): 7 -14 .
[10] SHI Zhanzhan， HE Zhenhua， WEN Xiaotao， TANG Xiangrong. Reservoir detection based on EMD and GHT[J]. Lithologic Reservoirs, 2011, 23(3): 102 -105 .
TRENDMD:

Copyright © 2018 Lithologic Reservoirs

Support by Beijing Magtech support@magtech.com.cn