一种延迟交联的抗高温加重胍胶压裂液的研究

doi:10.11885/j.issn.1674-5086.2019.05.05.04

西南石油大学学报(自然科学版) ›› 2021, Vol. 43 ›› Issue (1): 176-182.DOI: 10.11885/j.issn.1674-5086.2019.05.05.04

• 石油机械与油田化学 • 上一篇

一种延迟交联的抗高温加重胍胶压裂液的研究

戴秀兰¹, 刘通义^1,2, 魏俊^1,2, 王锰²

1. 成都佰椿石油科技有限公司, 四川成都 610500;
2. 西南石油大学化学化工学院, 四川成都 610500

收稿日期:2019-05-05 出版日期:2021-02-10 发布日期:2021-01-23
通讯作者: 戴秀兰,E-mail:812529711@qq.com
作者简介:戴秀兰,1987年生,女,汉族,湖北黄冈人,工程师,主要从事石油开采方面的研发和现场服务工作。E-mail:812529711@qq.com
刘通义,1964年生,男,汉族,四川内江人,高级工程师,博士,主要从事油藏增产措施理论及工程技术研究。E-mail:ltuty@163.com
魏俊,1988年生,男,汉族,湖北孝感人,工程师,主要从事石油开采方面的研发和现场服务工作。E-mail:553044317@qq.com
王锰,1995年生,男,汉族,陕西西安人,硕士研究生,主要从事高分子合成及压裂酸化液设计工作。E-mail:770507851@qq.com

A Study on a Kind of Delayed Crosslinking Anti-high Temperature Weighted Guanidine Gel Fracture Fluid

DAI Xiulan¹, LIU Tongyi^1,2, WEI Jun^1,2, WANG Meng²

1. Chengdu Baichun Petroleum Technology Company Limited, Chengdu, Sichuan 610500, China;
2. School of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu, Sichuan 610500, China

Received:2019-05-05 Online:2021-02-10 Published:2021-01-23

摘要/Abstract

摘要： 深井储层埋藏深、岩性致密，破裂压力和裂缝延伸压力高，导致压裂施工压力高、难度大，常规压裂液密度低，无法保证施工安全和措施效果。为此，合成了一种有机硼交联剂YGB 1，通过交联时间的测定对交联比和调节剂用量进行优化；并对稠化剂、加重剂和其他添加剂进行了优选，形成了密度为1.35 g/cm³、延迟交联时间在3～17 min内可调、适用于160 ℃储层的加重胍胶压裂液配方。通过耐温耐剪切实验、悬砂实验、降阻实验和破乳实验对压裂液的各项性能进行了测定，结果表明，该加重胍胶压裂液各项性能优异，在160 ℃、170 s^-1下剪切2 h后黏度仍保持在150 mPa·s以上；当混砂比为25%时，使用20～40目的陶粒在90 ℃条件下测试悬砂实验，悬浮0.5 h后，陶粒无沉降；测试管路为6 mm，当排量为3.5 m³/h时，加重压裂液的降阻率为61%；破胶液表面张力为24.8 mN/m，残渣含量为398.2 mg/L；破胶液防膨率为91%。

关键词: 加重压裂液, 有机硼交联剂, 添加剂优选, 延迟交联, 性能评价

Abstract: The problems of deep well reservoir, such as deep burial depth, tight lithology, high fracture pressure and fracture extension pressure, lead to high pressure and difficulty in fracturing, and low density of conventional fracturing fluid, which cannot guarantee the construction safety and effect of measures. In order to solve the above problems, a kind of organoboron crosslinking agent YGB-1 was synthesized in this paper, and the crosslinking ratio and the amount of regulator were optimized by the determination of crosslinking time. The thickening agent, weighting agent and other additives were optimized to form a fracturing fluid formula with density of 1.35 g/cm³, adjustable delay crosslinking time within 3～17 min, and suitable for 160℃ reservoir. Various properties of the fracturing fluid were measured through the temperature and shear resistance test, suspended sand test, resistance reduction test and demulsification test. The results showed that the enhanced guanidine gel fracturing fluid had excellent properties. The viscosity remained above 150 mPa·s after 2 h shear at 160℃ and 170 s^-1. At 90℃, when the sand ratio is 25%, the ceramsite (20～40 meshes) was suspended for 0.5 h without settlement. When the test line is 6 mm and displacement is 3.5 m³/h, the drag reduction rate of the weighted fracturing fluid is 61%. The surface tension of the broken glue solution was 24.8 mN/m, and the residue content was 398.2 mg/L. The anti-swelling rate of broken glue solution was 91%.

Key words: weighted fracturing fluid, organoboron crosslinking agent, additive optimization, delayed crosslinking, performance evaluation

中图分类号:

TE357.1⁺2

戴秀兰, 刘通义, 魏俊, 王锰. 一种延迟交联的抗高温加重胍胶压裂液的研究[J]. 西南石油大学学报(自然科学版), 2021, 43(1): 176-182.

DAI Xiulan, LIU Tongyi, WEI Jun, WANG Meng. A Study on a Kind of Delayed Crosslinking Anti-high Temperature Weighted Guanidine Gel Fracture Fluid[J]. Journal of Southwest Petroleum University(Science & Technology Edition), 2021, 43(1): 176-182.

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一种延迟交联的抗高温加重胍胶压裂液的研究

A Study on a Kind of Delayed Crosslinking Anti-high Temperature Weighted Guanidine Gel Fracture Fluid

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