Deep water gas well test system and test method

A testing tube and horizontal technology, applied in surveying, earthmoving, wellbore/well components, etc., can solve the problems of inconvenient testing process and complicated equipment, and achieve the effect of less pressure, simple equipment and convenient operation.

Active Publication Date: 2015-02-11
CHINA UNIV OF PETROLEUM (EAST CHINA)
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Problems solved by technology

[0003] The heating method eliminates hydrates by heating the gas to a temperature higher than the hydrate formation temperature,

Method used

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  • Deep water gas well test system and test method
  • Deep water gas well test system and test method

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[0018] Such as figure 1 2. As shown in Figure 2, the downhole throttle valve 7 includes: an inlet pipe 71, an outlet pipe 72, a base 73, a hydraulic cylinder 74, a sealing cover 75, and a spring 76. The upper part of the inlet pipe 71 is a small-diameter cylindrical shell, The lower part is a large-diameter cylindrical shell, the upper cylindrical shell and the lower cylindrical shell are connected by a horizontal ring to form a whole; the upper small-diameter cylindrical shell is closed at the top and has several air outlets 77 on the side. The air hole 77 is used to provide a circulation channel for the gas; the outer thread of the upper part of the large-diameter cylindrical shell is provided with external threads for connecting with the internal thread of the inner wall of the outlet pipe 72; the inner wall of the lower part of the large-diameter cylindrical shell is provided with internal threads, The internal thread is used to connect with the external thread at the upper ...

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Abstract

The invention relates to a deep water gas well test system and a test method. The deep water gas well test system of an underground throttle valve comprises an offshore platform, a seabed oil well control system, an upper underground testing tubular column, the underground throttle valve, and a lower underground testing tubular column; a platform control system is arranged on the offshore platform; a well mouth nozzle is formed in the offshore platform and connected with the seabed oil well control system; the seabed oil well control system is positioned above a mud line; the upper underground testing tubular column, the underground throttle valve, and the lower underground testing tubular column are positioned inside a well shaft; the top end of the upper underground testing tubular column is connected with the seabed oil well control system, and the bottom end thereof is connected with the upper end of the underground throttle valve; the lower end of the underground throttle valve is connected with a lower testing tubular column; the underground throttle valve is arranged on the position 200 m above a deep production layer of the well shaft. The deep water gas well test system disclosed by the invention is simple in equipment and convenient to operate, eliminates the complex process of a heating method, does not add impurities to the well shaft, avoids impurities addition to the outputted gas, and meanwhile lowers the pressure in the well mouth and the surface pipeline.

Description

technical field [0001] The invention belongs to the field of offshore oil and gas development, and in particular relates to a deep-water gas well testing system and testing method. Background technique [0002] In recent years, my country's oil and gas development has gradually moved to the ocean, and the vast majority of offshore oil and gas are gathered in deep water areas. At present, there are many unsolved problems in the process of deep-water oil and gas development. When the gas in the wellbore reaches a certain temperature and pressure during the deep-water gas well test, hydrates may be formed, blocking the circulation channels, and causing safety accidents. Therefore, how to suppress the formation of hydrates is a technical problem during deep water testing. At present, the main methods to suppress the formation of hydrates are heating and adding inhibitors. [0003] The heating method eliminates hydrates by heating the gas to a temperature higher than the hydrate...

Claims

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Application Information

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IPC IPC(8): E21B34/06E21B34/16E21B47/00
CPCE21B34/06E21B34/16E21B47/00
Inventor 王志远孙宝江王雪瑞张振楠王金堂关利军金灏张伟国
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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