Abstract: Frac plug is an important multistage fracturing tool, which is extensively used for fracturing renovation of unconventional oil and gas reservoirs like shale oil and gas reservoirs and compact oil and gas reservoirs. Plug and peroration has become the major technique in multistage fracturing for unconventional oil and gas development both in North America and China because it can bring about fracturing at any positions and unlimitedly with a high positioning accuracy and a high packing reliability. CNPC and USA has developed a frac plut which is made of high-strength composite materials except for its slips and elements. This tool passed ISO-14310 qualification test. It can bear a pressure of 70MPa and a temperature of 150℃, showing an excellent drillability. With good setting reliability and sealing performance, this product is an international leader in terms of functions. It has been tested at a dozen of wells in Changqing and Sichuan- Chongqing areas with a 100 percent success rate.

摘要： 桥塞是套管多级分段压裂的重要工具, 广泛应用于页岩油气和致密油气等非常规油气藏的压裂改造。桥塞+射 孔联作压裂可以实现任意位置和无限级压裂, 压裂层位定位精确, 封隔可靠性高, 是北美和国内非常规油气开发主要采用的 分段压裂工艺技术, 应用范围广阔。CNPCUSA 研制了一种速钻复合桥塞, 该复合桥塞除卡瓦和密封胶筒外, 均选用高强度复 合材料, 通过了严格的ISO 14310-V3 测试, 承压70MPa, 耐温150℃, 具有良好的可钻性, 产品坐封可靠, 密封性能好, 整体 功能具备国际先进水平。该工具已经在长庆和川渝地区开展了10 余口井现场试验, 成功率达100%。

关键词: 桥塞, 快速可钻, 复合材料, 非常规油气, 分段压裂