无机盐工业
主管:中海油天津化工研究设计院有限公司
主办:中海油天津化工研究设计院有限公司
   中海油炼油化工科学研究院(北京)有限公司
   中国化工学会无机酸碱盐专业委员会
ISSN 1006-4990 CN 12-1069/TQ

无机盐工业 ›› 2020, Vol. 52 ›› Issue (11): 16-19.doi: 10.11962/1006-4990.2020-0019

• 研究与开发 • 上一篇    下一篇

砾岩油藏三元复合驱中碳酸钠与无机矿物消耗影响因素研究

侯军伟(),惠泽友,陈紫荆,宋琪,黄秉轩,陈梦梦   

  1. 中国石油大学(北京)克拉玛依校区,新疆克拉玛依 834000
  • 收稿日期:2020-05-18 出版日期:2020-11-10 发布日期:2020-12-01
  • 作者简介:侯军伟(1999— ),男,博士,副教授,主要研究方向为油气田开发和纳米材料学;E-mail: junwhou@126.com
  • 基金资助:
    新疆维吾尔自治区高校科研计划(XJEDU2018Y060)

Study on influencing factors of consumption of sodium carbonate and inorganic mineral in ASP flooding of conglomerate reservoirs

Hou Junwei(),Hui Zeyou,Chen Zijing,Song Qi,Huang Bingxuan,Chen Mengmeng   

  1. China University of Petroleum-Beijing at Karamay,Karamay 834000,China
  • Received:2020-05-18 Online:2020-11-10 Published:2020-12-01

摘要:

新疆油田三元复合驱现场使用的碱为碳酸钠,针对该区块的无机矿物组成、原油组成与地层水组成特点,开展了碳酸钠消耗量的研究。结果表明,砾岩油藏地层中的无机黏土矿物对碳酸钠有较强的吸附作用,其中吸附最强的是蒙脱石,其次是绿泥石、伊利石、长石,石英砂吸附性最小。静态吸附的结果证明碳酸钠在松散岩心上的吸附大于胶结岩心上的吸附,随着渗透率的降低,碳酸钠的动态吸附量逐渐减小,杂基对碳酸钠的消耗较大。该区块原油酸值较低,碳酸钠与原油发生化学反应的损失较少,该区块地层水中二价金属阳离子浓度较低,对碳酸钠的消耗也较少。

关键词: 新疆油田, 砾岩油藏, 无机矿物, 碳酸钠

Abstract:

The sodium carbonate was used as the source of alkali in the Xinjiang Oilfield ASP (alkaline-surfactant-polymer) flooding.Aiming at the charateristic of the components of inorganic mineral,crude oil and underground water in the area,the study on consumption of sodium carbonate was made.The results showed that the inorganic clay minerals in conglomerate reservoir had strong adsorption to sodium carbonate in ASP flooding system,in which the montmorillonite was the strongest adsorbent for polymers followed by chlorite,illite and feldspar,and the adsorbability of quartz sand was lowest.The static adsorption results showed that the adsorption of sodium carbonate on loose cores was greater than that on cemented cores.With the decrease of permeability the dynamic adsorption capacity of sodium carbonate decreased gradually.The miscellaneous groups consumed sodium carbonate much more.The crude oil acid value of the block is lower,and the loss of chemical reaction between the sodium carbonate and the crude oil was less; the divalent cation in the formation water of the block were lower,and the consumption of sodium carbonate was also less.

Key words: Xinjiang Oilfield, conglomerate reservoir, inorganic mineral, sodium carbonate

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