模拟套管固井滑套工况下冲蚀实验方案设计  

Schematic Design of Erosion Test on Cementing Sliding Sleeves in Fracturing Operations

作　　者：王国荣[1] 钱权[1] 杨昌海[1] 魏辽[2] 郭朝辉[2] WANG Guorong;QIAN Quan;YANG Changhai;WEI Liao;GUO Zhaohui(School of Mechatronic Engineering of Southwest Petroleum University, Chengdu, Sichuan 610500, China;Research Institute of Petroleum Engineering, SINOPEC, Chaoyang, Beijing 100101, China)

机构地区：[1]西南石油大学机电工程学院,四川成都610500 [2]中国石化石油工程技术研究院,北京朝阳100101

出　　处：《西南石油大学学报（自然科学版）》2017年第1期169-176,共8页Journal of Southwest Petroleum University(Science & Technology Edition)

摘　　要：新研发的井下工具必须经严格实验检验才能投放现场,因此,实际工况的准确模拟显得尤为重要。针对固井滑套在压裂时具有大排量与高含砂比的特点,设计了四泵串并联方式的工况模拟实验模型。根据实验条件,先假设冲蚀实验设备连接方案为两泵并联方式,而理论计算得出泵为管路所提供的扬程需达到35.82 m,与实测单台离心泵Q H特性曲线相结合,最终确定了设备连接方案为四泵串并联方式。通过监测模拟冲蚀实验中的排量与含砂比,结果表明,所设计的实验方案能够满足模拟大排量(4.5～7.0 m3/min)、高含砂比(体积比25%)的冲蚀要求且存在较大余量;同时得出进行压裂作业时不同孔眼数的滑套对管路整体压力损耗、实验流量、泵送能力等影响明显。New downhole tool inventions should be used after severe tests because the accurate simulation of the actual working conditions is very important. This study explains a four-serial-parallel pump test model to simulate erosion with the creation of a large discharge and high sand content when cementing sliding sleeves were in the operating mode. First, the equipmentconnection scheme was hypothesized for a two-parallel pump model according to the field test conditions. Then, the equipmentconnection was designed so that the pump lift in the pipelines reached 35.82 m based on detailed theoretical calculation. Withthis figure and the H–Q characteristic curve of the actual measurement of one centrifugal pump, the equipment connection was set up as a four-serial-parallel pump model. The simulation results showed that the scheme met the erosion requirements for a large discharge (4.5 to 7.0 m3/min) and high sand content (volume ratio of 25%) and had a large allowance. Furthermore, the test showed that in all fracturing operations, different numbers of sliding sleeve eyelets influenced the overall pipeline pressure loss, test flow, and pump efficiency.

关 键 词：固井滑套 冲蚀模拟 扬程计算 QH特性曲线 四泵串并联 

分 类 号：TE256[石油与天然气工程—油气井工程] TH128[机械工程—机械设计及理论]