这些装置相互连接成一整体，可以在油井防砂作业中使用。
Mutually connected into a whole, the devices apply to sand control work in oil fields.
主要应用于石油开采防砂作业工艺中，也可应用于类似作业工艺中。
The utility model is mainly applied to sand control in oil production and can also be applied to other similar work.
井壁失稳还影响固井，油藏开发中的射孔、防砂、采油和油井增产等后序作业的实施。
And wellbore instability also influences the perforation and sand production, ect in the reservoir development.
井壁失稳还影响固井，油藏开发中的射孔、防砂、采油和油井增产等后序作业的实施。
And wellbore instability also influences the perforation and sand production, ect in the reservoir development.
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