在线聚合物压裂液的研究与应用

崔会杰; 崔艳昭; 曹景芝; 邱守美; 张丽娜; 吴友梅

doi:10.3969/j.issn.1001-5620.2017.06.022

在线聚合物压裂液的研究与应用

doi: 10.3969/j.issn.1001-5620.2017.06.022

1. 华北油田采油工程研究院, 河北任丘 062552;
2. 渤海钻探井下作业公司, 河北任丘 062552

基金项目:

华北油田公司科研项目“环保型酸化压裂液体系的研究”（2016-HB-Z0208）的部分研究成果。

详细信息

作者简介:
崔会杰,男,1958年生,工程师,1990年毕业于华北石油职工大学,现在主要从事压裂液的研究与应用工作。电话(0317)2728489;E-mail:cyy_cuihj@petrochina.com.cn。

中图分类号: TE357.12
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出版历程
- 收稿日期: 2017-07-10
- 刊出日期: 2017-11-30

Study and Application of an InstantPolymer Fracturing Fluid

1. Petroleum Production Engineering Research Institute of Huabei Oilfield, Renqiu, Hebei 062552;
2. Downhole Operation Branch of CNPC Bohai Drilling Engineering Company Limited, Renqiu, Hebei 062552

摘要

摘要: 为了解决压裂液废液处理困难和减少压裂液对地层与环境的污染，研制开发出了一种在线聚合物压裂液体系。室内对在线聚合物压裂液的稠化剂、交联剂、黏土稳定剂、助排剂进行了研究与优选，对压裂液的溶胀性能、携砂性能、破胶性能、耐温抗剪切以及对地层的伤害进行了评价，优选出了适合地层温度60~120℃在线聚合物压裂液配方。使用该压裂液在华北油田压裂施工4口井，成功率100%，取得了较好的效果。压裂施工时将低分子聚合物乳液、多效添加剂与过硫酸铵通过计量泵直接打入混砂车内，与混砂车中的水、支撑剂混合就能完成压裂施工，最高砂比可达50%。这种方式直接将配制和施工紧密结合在一起，其优点是：①不用提前配制压裂液，操作简便，施工效率高；②随配随用，使用多少配制多少，不留残液，返排液可用来重新配液，不污染环境；③压裂液体系的pH值呈中性，无残渣，对地层伤害小。
- 聚合物 /
- 压裂液 /
- 废液 /
- 污染
Abstract: An instant polymer fracturing fluid has been developed to try to resolve the difficulties in disposing waste fracturing fluids and to minimize formation damage and pollution to the environment caused by fracturing fluids. Thickening agent, crosslinking agent, clay stabilizer and cleanup additive for the fracturing fluid were studied and optimized through laboratory experiment. The formula of the fracturing fluid suitable for use under formation temperature of 60-120℃ was prepared through laboratory evaluation of the fracturing as to its swelling ability, sand-carrying ability, gel-breaking ability, resistance to high temperature and shearing and its contribution to formation damage. Fracturing of 4 wells in Huabei Oilfield with this fracturing fluid was 100% successful. In fracturing operation, the low molecular weight polymer emulsion, multipurpose additives and ammonium persulfate are first pumped into a fracturing blender truck through metering pump, then mixed with water and proppants in the blender truck to start fracturing. The maximum sand ratio can be as high as 50%. This fracturing method, by combining the mixing of the fracturing fluid closely with operating, has the advantages as follows:1) there is no need for pre-mixing fracturing fluid, and the operation is thus simplified, and operation efficiency is enhanced. 2) the volume of the fracturing fluid can be prepared based on actual requirement, thereby minimizing residual fracturing fluid. The flowback fluid can be recovered for mixing new fracturing fluid, thereby minimizing the pollution to environment. 3) the fracturing fluid has a neutral pH value and is free of residue, and formation damage is thus minimized.
- Polymer /
- Fracturing fluid /
- Waste fluid /
- Pollution

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参考文献(11)

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