Double-layer pipe microwave heating short joint for hydrate transportation

A technology of microwave heating and microwave heating device, applied in drill pipe, casing, isolation device, etc., can solve problems such as affecting mining and blocking flow channels.

Active Publication Date: 2020-10-23
SOUTHWEST PETROLEUM UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Many hydrate production trials have been carried out around the world through depressurization method and solid-state fluidization method. During the process of hydrate mining and trans

Method used

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  • Double-layer pipe microwave heating short joint for hydrate transportation
  • Double-layer pipe microwave heating short joint for hydrate transportation
  • Double-layer pipe microwave heating short joint for hydrate transportation

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Embodiment Construction

[0019] The present invention will be further described below in conjunction with accompanying drawing:

[0020] A double-layer pipe microwave heating short joint for hydrate transportation includes a microwave heating device, an inner pipe 10, an outer pipe 5, a support plate 2, an upper joint 1 of the inner pipe, and a lower joint 6 of the inner pipe; in this embodiment, the support plate 2 The inner pipe 10 is supported inside the outer pipe 5 to form two flow passages of the inner pipe and the annulus of the inner and outer pipes; as figure 1 As shown, the support plate 2 is provided with an overflow channel for communicating with the annulus on the upper and lower sides. Both the upper joint 1 of the inner pipe and the lower joint 6 of the inner pipe are threadedly matched with the inner pipe 10 . The microwave heating device is composed of a shell 4 , a shell joint 3 , a magnetron 7 , a waveguide 8 and an end cover 11 ; the shell joint 3 is assembled at one end of the sh...

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Abstract

The invention discloses a double-layer pipe microwave heating short joint for hydrate transportation. The double-layer pipe microwave heating short joint for hydrate transportation comprises a microwave heating device, an inner pipe, an outer pipe, a supporting plate, an upper inner pipe joint and a lower inner pipe joint. The microwave heating device consists of a shell, a shell joint, magnetrons, a waveguide tube and end covers, wherein the magnetrons are respectively packaged into the shell and the shell joint through the end covers, and the waveguide tube is connected with the corresponding magnetrons to be fixed on the outer wall of the shell. The microwave heating device is fixed on the outer wall of the inner pipe through the supporting plate, the upper inner pipe joint and the lower inner pipe joint, and is positioned by utilizing steps on the inner wall of the outer pipe. According to the double-layer pipe microwave heating short joint for hydrate transportation, in the process of exploiting and pumping hydrate by using a double-layer pipe, the hydrate in a conveying pipe can be effectively prevented from being generated again, the exploitation efficiency is improved, andthe safety of equipment is guaranteed.

Description

technical field [0001] The invention relates to the field of double-tube drilling and production, in particular to a double-tube microwave heating short joint for hydrate transportation. Background technique [0002] Compared with conventional drilling, the double-tube drilling method has two channels, the inner tube and the inner and outer tube annulus, which can realize recovery in the tube. It is often used in managed pressure drilling, and is especially suitable for oil and gas production and hydrate development in narrow ocean density windows. [0003] Gas hydrate widely exists in the earth's permafrost and deep sea, and is considered to be a potential clean energy in the 21st century. Many hydrate production trials have been carried out around the world through depressurization method and solid-state fluidization method. During the process of hydrate mining and transportation, under the influence of various external factors, there may be a The secondary generation of ...

Claims

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Application Information

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IPC IPC(8): E21B17/00E21B36/00E21B36/04E21B17/02
CPCE21B17/00E21B17/02E21B36/005E21B36/04
Inventor 钟林余兴勇王国荣周守为刘清友李清平陆江何玉发胡刚王川敬佳佳
Owner SOUTHWEST PETROLEUM UNIV
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