Petroleum Science and Technology Forum

Petroleum Science and Technology Forum ›› 2017, Vol. 36 ›› Issue (增刊): 124-127.DOI: 10. 3969/ j. issn. 1002-302x. 2017. z1. 034

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EM30 Fracturing Fluid System for Tight Oil and Gas

Fan Huabo1,2, Liu Jin1,2, Guo Gang1,2, Wu Jiang1,2   

  1. 1. National Engineering Laboratory for Exploration and Development of Low-permeability Oil and Gas Fields, Xi’an 710018, China; 2. Oil and Gas Research Institute, PetroChina Changqing Oilfield Company, Xi’an 710018, China
  • Online:2018-03-25 Published:2018-04-13

致密油气EM30 滑溜水压裂液体系

范华波1，2，刘　锦1，2，郭　钢1，2，吴　江1，2   

  1. 1. 低渗透油气田勘探开发国家工程实验室; 2. 中国石油长庆油田公司油气工艺研究院
  • 基金资助:
    中国石油天然气股份有限公司重大科技专项“ 鄂尔多斯盆地致密油勘探开发关键技术研究” ( 编号: 2011E- 2602); 中国石油天然气股份有限公司重大科技专项“长庆油田油气当量上产5000 万吨关键技术” (编号: 2011E-1307)。

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Abstract: Volume-fracturing technology for tight oil and gas fields is continually under development. Fracturing fluid is required to be transformed from conventional crosslinked gel to low-viscosity gliding water system. EM30 gliding-water fracturing fluid system for tight oil and gas is developed in highlight of drag reduction agent, anti-slugging agent and anti-expansion agent. The fluid system is continually optimized on the basis of inspecting and evaluating functions of the product and technically characterized in low friction, low viscosity, low damage and low cost. It can be continuously mixed and recoverable. A total of 4 million cubic meters of fluid have been cumulatively used in renovation of tight oil and gas reservoirs so that EM 30 becomes the main fracturing fluid for renovation of tight reservoirs in Ordos Basin. The recovery rate of flow-back fluid reaches 85 percent, saving water consumption by 30 percent and reducing the cost by 500 million yuan. The social and economic performance of EM30 is remarkable.

Key words: tight oil and gas, drag reduction agent, anti-slugging agent, anti-expansion agent, volume-fracturing

摘要： 致密油气田体积压裂技术不断发展要求压裂液实现从常规的交联冻胶向低黏液体和滑溜水体系转变。以 减阻剂、助排剂、防膨剂研发为核心, 在产品性能检测与综合评价的基础上不断优化, 形成了具有低摩阻、低黏度、 低伤害、低成本、可连续混配、可回收等技术特点的致密油气EM30 滑溜水压裂液体系, 在致密油气储层改造中累计应 用超过10000 层段400×104m3 液量, 成为鄂尔多斯盆地致密储层改造主体压裂液。应用后返排液回收率达85%, 累计 节约用水30%, 节约成本5 亿元, 创造了显著的社会效益与经济效益。

关键词: 致密油气; 减阻剂; 助排剂; 防膨剂; 体积压裂