RFID智能滑套设计与试验研究

Design and Experimental Study of an RFID Intelligent Sliding Sleeve

为了解决传统水平井分段压裂技术操作复杂、无法达到全通径和压裂级数受限的问题,提出了基于RFID智能滑套的水平井分段压裂技术。在分析水平井分段压裂技术特点的基础上,研究了RFID智能滑套压裂管柱的结构和技术难点,开展了RFID智能滑套结构的方案优选、模拟分析、单元试验和室内样机试验。试验结果表明,RFID智能滑套在温度120℃、压差10~70 MPa工况下均能顺利开启至设定开度,RFID标签球能够控制RFID智能滑套窗口达到预设开度,且RFID通讯成功率良好。研究表明,RFID智能滑套水平井分段压裂技术能够降低水平井压裂施工成本,提高油气开发效率,为油气开发向智能化、低成本化和高效化方向发展提供技术支持,具有良好的应用前景。

In order to overcome the deficiencies of conventional horizontal well staged fracturing technologies,including complicated operations,the inability to achieve full drift size and limited number of fracturing stages,a horizontal well staged fracturing technology with an RFID intelligent sliding sleeve was proposed.The pipe string structure and technical challenges of RFID intelligent sliding sleeve fracturing technology were studied,on the basis of analyzing the characteristics of horizontal staged fracturing technologies and experiments carried out scheme optimization,simulation analysis,unit test and indoor prototype test for an RFID intelligent sliding sleeve structure.The test results showed that the RFID intelligent sliding sleeve could be smoothly opened to the preset openness under the temperature of 120℃and pressure difference of 0–70 MPa.The RFID tag ball can control the window of RFID intelligent sliding to the preset openness,with RFID communication having an excellent success rate.The reesults indicated that RFID intelligent sliding sleeve-based horizontal well staged fracturing technology could reduce the cost of horizontal well fracturing,improve the efficiency of oil and gas development,and provide technical support for the intelligent,cost-saving and efficient development of oil and gas,with good foundation for future application.