Well completion pipe string supported by tail pipe

• Main Authors: CHEN YI, SONG ZHOUCHENG, WANG XIN, XIONG CHANG, HE SILONG, LI WEI, DUAN YONGXIAN, WANG RENDE
• Format: Patent
• Language: Chinese; English
• Published: 25.06.2024
• Subjects: EARTH DRILLING; EARTH DRILLING, e.g. DEEP DRILLING; FIXED CONSTRUCTIONS; MINING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS

The invention discloses a tail pipe supporting well completion pipe string. The tail pipe supporting well completion pipe string comprises a first casing pipe section, a second casing pipe section, a hoop-free casing pipe section and a hoop-free screen pipe section which are sequentially connected from top to bottom. The hoop-free casing pipe section and the hoop-free screen pipe section are sequentially connected with a packer, a releasing device and a drill rod upwards, the bottom end of the drill rod extends into a well, and the top end of the drill rod extends out of the well. The risk that the packer or the supporting pipe cannot reach the designed position when encountering resistance or clamping is greatly reduced, and the drift diameter of the oil-string casing is guaranteed. 本发明公开了一种尾管支撑完井管柱，包括自上而下依次连接的第一套管段、第二套管段、无节箍套管段和无结箍筛管段；无结箍套管段和无结箍筛管段往上依次连接有封隔器、丢手器和钻杆，钻杆底端伸入井中，顶端从井中伸出。大大减少了遇阻或遇卡封隔器或支撑管下不到设计位置的风险，并保证了油层套管的通径。