Jaw type plunger gas lift underground seating device with uniflow sand prevention function

• Main Authors: XIE YONGGANG, CUI LICHUN, LI YAODE, JIA YOULIANG, SONG JIE, TIAN WEI, YANG YACONG, LI, XURI, TAN PO, HUI YANNI
• Format: Patent
• Language: Chinese; English
• Published: 22.12.2023
• 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 clamping jaw type plunger gas lift downhole seating device with the uniflow sand prevention function comprises a fishing head, the fishing head is connected with a flow guide cylinder through threads along the inner side face of the axial bottom end, the bottom end of the flow guide cylinder is connected with a uniflow sealing structure, and the uniflow sealing structure is connected with a sand prevention cylinder in a clamped mode. The inner side face of the axial bottom end of the sand prevention cylinder is connected with a clamping mechanism through threads. The sand-proof rubber plug has a sand-proof function, and meets the requirements of preventing upward movement and bearing the pressure of 5MPa. The throttling resistance of the sand control pipe is reduced to the maximum extent through the sand control kerf channel, and the application requirement of a sand production gas well is effectively met. 本发明公开的具有单流防砂功能的卡爪式柱塞气举井下座落器，包括打捞头，打捞头沿轴向底端内侧面通过螺纹连接有导流筒，导流筒底端连接有单流密封结构，单流密封结构卡接有防砂筒，防砂筒沿轴向底端内侧面通过螺纹连