Anti-breaking and anti-disengaging coupling protector for sand control screen pipe of high-temperature steam injection horizontal well

The utility model discloses a high-temperature steam injection horizontal well sand control screen pipe breakage and disengagement prevention coupling protector which comprises a connecting protective sleeve, and the connecting protective sleeve is arranged outside a coupling in a sleeved mode. The device further comprises a screen protecting tooth lock breaking and disengaging preventing mechanism. The screen tooth lock breaking and disengaging preventing mechanism is arranged between the connecting protective sleeve and the screen pipe. The connection position of the coupling and the screen pipe is easy to break in the steam injection and blowout process of the sand control screen pipe, the strength of screw thread connection at the coupling position of the sand control screen pipe can be improved, and the service life of a pipe column is prolonged. 本实用新型公开了高温注蒸汽水平井防砂筛管防断脱接箍保护器，包括连接保护套，在接箍的外部套装有连接保护套；还包括保筛牙锁防断脱机构；所述保筛牙锁防断脱机构设置在连接保护套与筛管之间。防砂筛管在注汽、放喷过程中接箍以及筛管连接处易断裂，采用本实用新型可提高防砂筛管接箍处的丝扣连接的强度，提高管柱的使用寿命。