A gas volume distribution device, a gas distributor, a pipe string for stratified gas injection and a method
A technology of distribution device and gas distributor, which is applied in the direction of earthwork drilling, wellbore/well components, and production fluid, etc., which can solve the problems of loss of control flow, high damage intensity, and enlarged hole, so as to improve efficiency, The resistance level is easy and the effect achieved by the resistance level
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Embodiment 1
[0104] This embodiment provides an air volume distribution device, and the schematic structural diagram of the air volume distribution device 10 is as follows: Figures 7a-7b shown, from Figures 7a-7b It can be seen that the gas distribution device includes: an outer tube 11, a gland 12, a filter screen 13 and a filling block 14 with a pore structure;
[0105] The outer tube is a hollow outer tube with an open upper end and a bottom at the bottom, and a bottom hole 16 is opened in the center of the bottom of the outer tube; the hollow part of the outer tube is used to place a filling block with a pore structure, and the filling block and Seal between the inner walls of the outer tube;
[0106] The bottom end of the gland is provided with a circular groove for placing the filter screen, and the filter screen is sealed with the inner wall of the circular groove; the top of the gland is evenly distributed with a number of top holes 15 penetrating the gland;
[0107] The gland ...
Embodiment 2
[0118] This embodiment provides an air distributor (such as Figure 8 shown), the gas distributor includes a core 4, the upper and lower ends of the outer wall of the core are respectively sleeved with O-rings 5, and the side wall of the core is also provided with side wall holes 18; wherein, the gas distributor It also includes the air volume distribution device 10 provided in the embodiment, which is arranged inside the core, and the bottom hole of the air volume distribution device is connected with the side wall hole of the air distributor through a pipeline.
Embodiment 3
[0120] This embodiment provides a pipe string for stratified gas injection, and the structural schematic diagram of the pipe string for stratified gas injection is as follows: Figure 9 shown, from Figure 9 It can be seen from the above that it includes an insulated oil pipe 0, two packers (the first packer 21 and the second packer 22), and two air distributors (the first air distributor) provided in Example 2. 23 and the second air distributor 24) and the plug 8, the first packer, the first air distributor, the second packer and the second air distributor are connected to the insulated oil pipe in sequence, And the bottom end of the heat insulating oil pipe is sealed with a wire plug 8 .
[0121] Wherein, the ratio between the permeability of the packing blocks with pore structure used in the gas distribution device in the gas distributor of different oil layers is the same as the ratio between the gas injection amounts of the corresponding oil layers.
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