Experimental facility for simulating flow condition variations of multiple diameter expanding sections in natural gas hydrate well drilling

A technology of flow state and experimental device, applied in drilling equipment, earthmoving, wellbore/well components, etc., can solve the problems of high torque, high friction, and poor cleaning effect of horizontal section wellbore

Inactive Publication Date: 2017-09-29
SOUTHWEST PETROLEUM UNIV
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  • Abstract
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  • Application Information

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Problems solved by technology

The poor purification effect of the wellbore in the horizontal section and the continuous decomposition of natural gas hydration during th...

Method used

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  • Experimental facility for simulating flow condition variations of multiple diameter expanding sections in natural gas hydrate well drilling
  • Experimental facility for simulating flow condition variations of multiple diameter expanding sections in natural gas hydrate well drilling
  • Experimental facility for simulating flow condition variations of multiple diameter expanding sections in natural gas hydrate well drilling

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Embodiment Construction

[0022] The present invention will be further described below in conjunction with accompanying drawing, protection scope of the present invention is not limited to the following:

[0023] Such as figure 1 As shown, an experimental device for simulating the flow state change of various expansion sections of natural gas hydrate drilling, which includes a mixture inlet 7 connected sequentially from top to bottom, a casing joint A6, a vertical section outer pipe 17, and a flange joint A20 , the outer pipe 25 of the inclined well section, the flange joint B28, the outer pipe of the horizontal section and the casing joint B, the outer pipe 17 of the vertical section is provided with the inner pipe 19 of the vertical section, and the outer pipe 25 of the inclined well section is provided with the inclined well Section inner pipe 26, the horizontal section outer pipe is provided with a horizontal section inner pipe, one end of the horizontal section inner pipe is connected with the dri...

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Abstract

The invention discloses an experimental facility for simulating flow condition variations of multiple diameter expanding sections in natural gas hydrate well drilling. The facility comprises a mixture inlet, a sleeve joint A, a vertical section outer pipe, a flange joint A, an inclined well section outer pipe, a flange joint B, a horizontal section outer pipe and a sleeve joint B connected in sequence from the top down; the facility also comprises a computer monitoring system and a gas-liquid-solid separator, wherein the computer monitoring system is electrically connected with a pressure sensor and a speed sensor; and the facility also comprises an electromagnetic air pump A, an electromagnetic air pump B and a high speed camera, wherein a shunt pipe is connected with the output port of the electromagnetic air pump A. The experimental facility has the beneficial effects of being compact in structure, capable of being necessary to perform visualized experiment research on moving tracks and dynamic floating phenomena of rock fragment particles and natural gas hydrate particles in an annulus, and providing a basis for a flowing rule of a diameter expanding section flow field during a natural gas hydrate well drilling process.

Description

technical field [0001] The invention relates to the technical field of natural gas hydrate drilling, in particular to an experimental device for simulating flow state changes in various diameter expansion sections of natural gas hydrate drilling. Background technique [0002] At present, with the continuous deepening of exploration and development of oil and gas resources in my country, natural gas hydrate, as a new type of oil and gas resources, is currently valued by many countries. At present, gas hydrates are distributed in many countries in the world, mainly in the permafrost areas of the Arctic and in the seabed, continental slope, land base and trenches all over the world. my country's natural gas hydrate resources are about 80 billion tons of oil equivalent, twice the amount of conventional natural gas resources in my country, and are mainly distributed in the tundra of the Qinghai-Tibet Plateau, the continental slope of the South China Sea and its deep sea. my coun...

Claims

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Application Information

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IPC IPC(8): E21B49/00E21B7/28E21B47/06
CPCE21B7/28E21B47/06E21B49/00
Inventor 魏纳陈光凌孟英峰李皋周守为郭平李清平张馨月徐汉明席永钊李蜀涛
Owner SOUTHWEST PETROLEUM UNIV
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