超低浓度羟丙基胍胶压裂液体系的研制及在苏里格气田的应用.pdf

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石油与天然气化工
274
CHEMICAL ENGINEERING OF OIL & GAS
2013
超低浓度羟丙基胍胶压裂液体系的
研制及在苏里格气田的应用
李小玲2丁里2石华强2尹晓宏2吕小明2
(1.长庆油田分公司油气工艺研究院)
(2.陕西低滲透油气田勘探开发国家工程实验室)
摘要在分析苏里格气田上古储层地质条件的基础上,依据“羟丙基胍胶的临界重叠浓度就
是交联的最低浓度”理论和有机明交联机理,通过对交联络合剂和合成条件的优选,研发出新型的
高效交联剂,用该交联剂体系,羟丙基胍胶稠化剂质量分数较常规气井降低40%时,仍保持了良
好的耐温和流变性能。这压裂液体系残渣残胶含量大大降低,降低了对储层的伤害程度。截至到
2011年底,该压裂液己成功应用于苏里格气田42ロ直井、3ロ水平井,取得了较好的改造效果。
关键词超低浓度压裂液羟丙基脉胶高效交联剂低伤害
中图分类号:TE357.12文献标志码:ADOI:10.3969/j.issn.1007-3426.2013.03.015
Development of the super-low concentration hydroxypropyl guar gelled
fracturing fluid and its application in Sulige gas field
Li Xiaoling", Ding Li", Shi Huaqiang?, Yin Xiaohong.2. Lv Xiaoming. 2
(1. Oil & Gas Technology Research Institute, Changging Oilfield Com pany, Xian 710021
Shaan. ti, China; 2. Shaan.ti Low Permeability Oil and Gas Field E.rploration and Decelopment
of the National Engineering Laboratory, Xian 710021, Shaan.ti, China
Abstract: On the basis of the analysis of Upper Paleozoic Reservoir geological conditions in
Sugeli gas field, according to the theory of critical concentration of the hydroxypropyl guar gum
(HPG) is the lowest concentration of cross-inking, and organic boron crosslinking mechanism
the new style high cfficient cross-linking agent has been studied through the optimizing of synthe-
sis conditions and cross-linking complexing agent. The application of this cross-linking system
could make the hydroxypropyl guar concentration decline by 40%, and the fracturing fluid system
could still keep the good temperature-resistance property and rheological behavior. The volume of
the residual gum decrease greatly alleviated the damage to reservoir. By the end of the 2011. the
fracturing fluid had been successfully used in 42 vertical wells and 3 horizontal wells of the Sulige
gas field, which achieved better modification effects
Key words: super-low concentration fracturing fluid, hydroxypropyl guar gum, high efficiency
cross-linking complex agent, low damage
基金项目:中国石油集团公司科技项目“致密气藏开发重大工程技术”(1202-4)。
作者简介:李小玲(1982-),工程师,2008年毕业于西安石油大学应用化学专业(士).现在长庆油田油气工艺研究院从
事压裂液研究工作。联系电话:02986590661。E-mail:lixia8_cq@petrochina.com.cn