Connecting device for butt joint between bundled pipe wellhead cut pipe and inner channel

Abstract

The invention provides a connecting device for butt joint between a bundled pipe wellhead cut pipe and an inner channel. The device comprises an external four-way joint, a horizontal flow dividing connector and a flow dividing mandrel; the external four-way joint is provided with an upper connection port, a lower connection port, a left connection port and a right connection port, wherein a vertical channel is formed by the upper connection port and the lower connection port, and a horizontal channel is formed by the left connection port and the right connection port; the horizontal flow dividing connector is arranged at the intersection of the vertical channel and the horizontal channel, the two ends of the horizontal flow dividing connector are connected with the left connection port andthe right connection port in a sealed mode, a connecting channel is formed between the middle of the horizontal flow dividing connector and the vertical channel, and the horizontal flow dividing connector is provided with a first horizontal channel, a second horizontal channel and a vertical mounting hole, wherein the first horizontal channel communicates with the left connection port, and the second horizontal channel communicates with the right connection port; and the flow dividing mandrel is arranged in the vertical channel in the vertical direction, the upper portion of the flow dividingmandrel is fixed to the vertical mounting hole, and the flow dividing mandrel is provided with a first pipeline and a second pipeline which are arranged in parallel in the vertical direction at an interval and connected with the first horizontal channel and the second horizontal channel respectively.

Description

technical field [0001] The invention relates to the field of oil and gas exploitation, in particular to a connecting device for butt jointing inner channels of bundled tubes, wellhead cutting tubes. Background technique [0002] At present, for a well containing multiple layers of sandstone or coal seams, the main mining methods at home and abroad are multi-layer combined mining and multi-channel mining in the same well. The direct combined production of the reservoir, and the multi-channel production in the same well are mainly suitable for the separate production of multiple storages with large differences in pressure systems. For formations containing sandstone gas and coalbed methane in the same area, due to the large difference in pressure systems and physical properties of the two, the main mining method is to use two wells to mine separately, and this mining method produces The cost is higher and the area occupied is larger. At present, there is no precedent for the...

AI Technical Summary

Problems solved by technology

For formations containing sandstone gas and coalbed methane in the same area, due to the large difference in pressure systems and physical properties of the two, the main mining method is to use two wells to mine separately, and this mining method produces Higher cost and larger floor space

At present, there is no precedent for the co-production of sandstone gas and coalbed methane in the same well

Images