石油钻采工艺2017，Vol.39Issue(3)：338-343,6.DOI:10.13639/j.odpt.2017.03.016
东北油气田可重复利用地层水基压裂液
Reusable fracturing fluid based on formation water in Northeast Oil and Gas Field
王娟娟 1刘翰林 2刘通义 3魏俊 3林波4
作者信息
- 1. 中国石化东北油气分公司工程技术研究院
- 2. 西安石油大学地球科学与工程学院
- 3. 西南石油大学化学化工学院
- 4. 成都佰椿石油科技有限公司
- 折叠
摘要
Abstract
In Northeast Oil and Gas Field, the dispending fluid of fracturing fluid is deficient and formation water cannot be recycled easily. To solve these problems, the characteristics of formation water in Northeast Oil and Gas Field were analyzed and the reusable fracturing fluid was investigated. It is indicated from formation water characteristic analysis and formation water based fracturing fluid optimization experiments that the formation water in several blocks (e.g. Sujiatun) is characterized by weak alkaline, strong bioactivity and high contents of Ca2+ and Mg2+. As a result, the conventional thickener swells slowly and even precipitates, the stability of prepared based fluid is poor, crosslinking is uncontrollable and the temperature resistance of crosslinked fluid is poor. Ultimately, the BCS molecu-lar self-association fracturing fluid based on formation water was adopted and its 130 ℃ formula is 0.55% thickener BC-S+0.45% thick-ening synergist BL-S+0.3% metallic ion stabilizer BCG-5+0.2% high temperature stabilizer B-13+0.3% efficient antiprecipitant BC-3. Its performance was evaluated. It is indicated that after BCS fracturing fluid is sheared for 120 min at 170 s-1 under 130 ℃, its viscosity is high than 35 mPa·s. Its temperature resistance and shear resistance are good. Its proppant carrying capacity is better than that of HPG fracturing fluid. Its gel breaking is complete with the content of gel breaker residue only 1.5 mg/L. Its surface tension is 24.32 mN/m. After the flowback fracturing fluid is diluted with 60% tap water, the BCS fracturing fluid can satisfy the criterion of original 130 ℃formula, and thus the formation water can be recycled many times.关键词
地层水/水质分析/重复利用/分子自缔合压裂液/性能评价/东北油气田Key words
formation water/water quality analysis/recycle/molecular self-association fracturing fluid/performance evaluation/Northeast Oil and Gas Field分类
能源科技引用本文复制引用
王娟娟,刘翰林,刘通义,魏俊,林波..东北油气田可重复利用地层水基压裂液[J].石油钻采工艺,2017,39(3):338-343,6.
