Novel supporting device for gas drilling sand draining pipe

Abstract

The invention discloses a novel supporting device for a gas drilling sand draining pipe. The novel supporting device comprises an upper pressing sleeve (6), a lower supporting sleeve (7), a supporting base (8) and a height adjusting sleeve (11). A plurality of through holes I (13) penetrating through the supporting base (8) are formed in the cylindrical surface of the supporting base (8) in the length direction of the supporting base (8). A plurality of through holes II (15) penetrating through the height adjusting sleeve (11) are formed in the cylindrical surface of the height adjusting sleeve (11) in the length direction of the height adjusting sleeve (11). The height adjusting sleeve (11) is fixed into a cavity (12) through a height fixing pin (10) which penetrates through any through hole I (13) and the corresponding through hole II (15). The upper pressing sleeve (6) is fixed to the lower supporting sleeve (7) through connecting bolts (19). The bottom of the lower supporting sleeve (7) is further provided with a single-hole hinge support (17). The novel supporting device has the advantages that the mounting difficulty is lowered, the construction time is shortened, the suspension stability is improved, and safety and reliability are achieved.

Description

technical field [0001] The invention relates to a wellhead device in the field of oil and gas well engineering, in particular to a novel support device for a gas drilling sand discharge pipeline. Background technique [0002] At present, gas drilling needs to install a rotary control head on the annular blowout preventer, and connect the sand discharge pipeline through the bypass of the rotary control head to provide an exhaust channel for the wellbore. However, the bypass of the rotary control head is high from the ground and far away from the combustion pit path, so it needs to cross mud tanks and other equipment. Therefore, the sand discharge pipeline has the characteristics of large height drop and large suspended span. In addition, the sand discharge pipeline adopts a large size Steel pipes (large length, high rigidity, and heavy weight), use traditional triangular support frames to install sand discharge pipelines, such as figure 1 As shown in the figure, 1-wellhead d...

AI Technical Summary

Problems solved by technology

However, the bypass of the rotary control head is high from the ground and far away from the combustion pit path, and it needs to cross mud tanks and other equipment. Therefore, the sand discharge pipeline has the characteristics of large height drop and large suspended span. In addition, the sand discharge pipeline adopts a large size Steel pipes (large length, high rigidity, and heavy weight), use traditional triangular support frames to install sand discharge pipelines, such as figure 1 As shown in the figure, 1-wellhead device, 2-rotary control head, 3-triangular support frame, 4-mud tank, 5-burning and drainage tank, the triangular support frame is set under the sand discharge pipeline, the wellhead device and the burning and discharging tank There are multiple triangular support frames between the pools. Due to the difficulty in changing the support height of the triangular support frames and the inability to wrap the fixed and inclined sand discharge pipeline, there are engineering technical problems such as difficult hoisting, long labor hours, and poor suspension stability.

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