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Oil field well head sleeve tube gas sampling equipment

A gas sampling and casing technology, used in wellbore/well components, earthwork drilling, etc., can solve problems such as production failure, personal safety risks, interference with analysis results, etc., achieve tight sealing, ensure personal safety, The effect of ensuring personal safety

Inactive Publication Date: 2019-01-01
SHAANXI XINGCHEN PETROLEUM TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The casing gas sample collected by this method will inevitably be mixed with air and impure, and the nitrogen contained in the air will interfere with the analysis results of the components of the test gas sample, mislead the production, and prevent the smooth progress of production
In addition, some oil well casing gas may also contain hydrogen sulfide gas, which poses risks to personal safety

Method used

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  • Oil field well head sleeve tube gas sampling equipment

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Effect test

Embodiment Construction

[0016] see figure 1 , the invention discloses an oil field wellhead casing gas sampling device, the sampling nozzle 10 has a tubular sampling nozzle body 1, and the two ends of the sampling nozzle body 1 are respectively a fluid inlet port and a fluid outlet port; the fluid inlet port An interface 2 that can be connected with the wellhead casing of an oil well is formed, and a sampling interface 3 that can be sealingly connected with a sampling bag 7 is formed at the fluid outlet end. The interface 2, the sampling nozzle body 1 and the sampling nozzle 3 form a fluid channel. During the process of collecting the gas sample of the casing, the fluid flows through the fluid channel, which can effectively prevent air from mixing into the collected samples, thereby avoiding air to the casing. The component results of gas sample analysis and analysis cause interference and mislead production.

[0017] In a specific embodiment, an external thread matching the internal thread of the o...

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Abstract

The invention discloses oil field well head sleeve tube gas sampling equipment. The equipment includes a tubular sampling nozzle body. One end of the sampling nozzle body is a fluid inlet end, and theother end is a fluid outlet end. A joint capable of connecting to an oil well head sleeve tube is formed at the fluid inlet end. A sampling connecting nozzle capable of connected to a sampling bag ina sealed manner is formed at the fluid outlet end. According to the invention, a globe valve is arranged on the sampling nozzle, which adds a layer of protection to collection of gas samples, makes the sealing more tight, and ensures personal safety. Furthermore, the equipment is controlled by rotating a control handle, which is convenient. Clamping screwing grooves of the invention can match clamping teeth of a common wrench, which can be easily operated and conveniently and firmly connect the sampling nozzle to the oil well head sleeve tube of the invention.

Description

technical field [0001] The invention relates to the technical field of oil drilling and production equipment, in particular to an oilfield wellhead casing gas sampling equipment. Background technique [0002] During the development of ultra-heavy oil in the oil field using SAGD technology, the steam overlay effect makes the steam chamber rise too fast, which can easily cause the top water of the reservoir to leak down and cause water flooding of the reservoir. In order to avoid this problem, a certain amount of nitrogen is usually injected into the steam injection well, so that the nitrogen enters the oil layer and stays in the top area of ​​the main steam chamber to form a layer of nitrogen insulation belt, thereby preventing the main steam chamber from rising too fast, and at the same time forcing the steam The cavity is expanded laterally to excavate the remaining oil between wells and improve the recovery factor. [0003] After injecting nitrogen into the reservoir, it ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B49/08
CPCE21B49/086
Inventor 程世英
Owner SHAANXI XINGCHEN PETROLEUM TECH
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