1results about How to "Prevent moving up" patented technology

The utility model discloses a high temperature and high pressure oil pipe patching device belongs to the technical field of oil exploitation, including multiple high temperature and high pressure sealing mechanism and multiple high temperature and low pressure sealing mechanism, multiple high temperature and high pressure sealing mechanism between the adjacent two high temperature and high pressure sealing mechanism is equipped with the shaft sleeve, the slip sleeve is connected with the outer cylinder through several shearing nails, be equipped with the retreat prevention mechanism in the outer cylinder, and the retreat prevention mechanism is covered on the slip sleeve, the slip is located in the outer cylinder, and the upper end of slip is connected with the lower end of the reversing mechanism, and the slip is located the upside of slip sleeve. Set up multiple high temperature and high pressure sealing mechanism in the oil pipe patching device, and utilize the retreat prevention mechanism to prevent the slip sleeve from moving up relative to the outer cylinder, reduce the risk of all high temperature and high pressure sealing mechanism failure simultaneously, guarantee the oil production efficiency while guaranteeing that oil production work can develop normally, the sealing element adopts the high temperature resistant material to make, improved the high temperature resistant performance of oil pipe patching device.