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A gas well downhole adjustable supersonic gas separation liquid reinjection device

A gas separation, supersonic technology, applied in wellbore/well components, production fluids, earthwork drilling, etc., can solve the problems of polluted environment, many ground equipment, large investment, etc., achieving small size, simple structure and high efficiency Effect

Active Publication Date: 2022-05-27
陕西华博恒鑫能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The technical common point of these techniques is to extract the underground liquid to the ground, gather the separated liquid through the infusion pipeline, and then inject it back into the formation. There are problems such as many ground equipment, large investment, and environmental pollution.

Method used

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  • A gas well downhole adjustable supersonic gas separation liquid reinjection device
  • A gas well downhole adjustable supersonic gas separation liquid reinjection device
  • A gas well downhole adjustable supersonic gas separation liquid reinjection device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] like figure 1 A gas well downhole adjustable supersonic gas separation liquid reinjection device is shown, including a flow control sub-section 100, a rotary gas-liquid separator 200 and a gas-liquid separation sub-section 300; the gas-liquid outlet of the flow control sub-section 100 is connected to The rotary gas-liquid separator 200 is communicated, the liquid outlet of the rotary gas-liquid separator 200 is communicated with the reinjection cavity of the gas-liquid separation sub-section 300, and the gas outlet of the rotary gas-liquid separator 200 is communicated with the gas-liquid separation sub-section 300 The central cavity is connected; the flow rate control is 100 knots short to adjust the flow of the collected gas and liquid. After adjustment, the gas and liquid enter the rotating gas-liquid separator 200 for gas-liquid separation, and the gas passes through the gas-liquid after separation. Outside the well discharged from the central cavity of the separati...

Embodiment 2

[0037] On the basis of Example 1, as image 3 Described flow regulation short joint includes regulation upper joint 1, motor inner cylinder 2 fixedly connected to the end of regulation upper joint 1, motor outer cylinder 3 sleeved outside this motor inner cylinder 2 and fixedly connected with this motor inner cylinder 2. , and between the motor outer cylinder 3 and the motor inner cylinder 2 there is an electromagnetic coil 4 wound on the inner motor inner cylinder 2, the motor outer cylinder 3 and the motor inner cylinder 2 and the electromagnetic coil 4 form a linear motor, so The adjusting sleeve 6 is arranged in the inner cylinder 2 of the motor and can be driven to move forward and backward by the formed linear motor;

[0038] The end of the motor outer cylinder 3 is fixedly connected with a Laval nozzle 8, and the Laval nozzle 8 is as shown in the figure. Figure 5The shown specifically includes a steady flow section, a contraction section, an expansion section and a se...

Embodiment 3

[0046] On the basis of Example 1, as figure 2 The gas-liquid separation short joint includes a reinjector outer sleeve 12, the reinjector outer sleeve 12 and the end of the separator joint 10 are fixedly connected through the reinjector upper joint 11, and the reinjector outer sleeve 12 is provided with The separation sleeve 16, the center line of the separation sleeve 16 and the center line of the reinjector outer sleeve 12 are on the same line, the end of the separation sleeve 16 extends to the separator through the upper joint 11 of the reinjector In the joint 10; the separation sleeve 16 is used to discharge the separated gas to the outside of the well,

[0047] The reinjector outer sleeve 12 is sleeved with a switch sleeve 17, the switch sleeve 17 is sealed and slidingly connected with the inner wall of the reinjector outer sleeve 12, and the switch sleeve 17 is far away from the end of the reinjection upper joint 11 fixedly connected with the connecting head 18 fixedly...

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Abstract

The invention relates to an adjustable supersonic gas separation liquid reinjection device in the downhole of a gas well. The liquid separator is connected, the liquid outlet of the rotary gas-liquid separator is connected with the reinjection chamber of the gas-liquid separation sub, and the gas outlet of the rotary gas-liquid separator is connected with the central cavity of the gas-liquid separation sub; the structure is simple , Small size, high efficiency, the opening can be adjusted according to gas well production and bottom hole pressure to achieve optimal gas-liquid separation; the liquid separated by the swirl tube can be discharged to the annulus and injected into the formation to achieve downhole separation and reinjection of liquid.

Description

technical field [0001] The invention relates to the technical field of gas production in gas wells, in particular to a gas well downhole adjustable supersonic gas separation liquid reinjection device. Background technique [0002] In natural gas exploitation, with the gradual decrease of gas reservoir pressure and natural gas flow velocity, the produced water or condensate in the gas reservoir cannot be carried out of the wellbore with the natural gas flow, and thus stay in the wellbore. These liquids accumulate at the bottom of the well for a period of time, forming a liquid column, which causes additional hydrostatic back pressure on the reservoir, resulting in a continuous decrease in the self-blowing energy of the gas well. Typically, if this situation continues, the liquid column that builds up in the wellbore will eventually kill the gas pressure, causing the well to shut down. This phenomenon is called "gas well fluid accumulation". Aiming at the problem of liquid a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B43/38E21B43/40
Inventor 魏文澜程嘉瑞崔璐窦益华王博
Owner 陕西华博恒鑫能源科技有限公司
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