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Sulfur-containing gas field water sampling device and using method

A sampling device and technology for gas field water, which are applied in the fields of earthwork drilling, measurement, wellbore/well components, etc., can solve the problems of difficulty in ensuring the accuracy of sampling results, difficulty in risk control, difficulty in temporary sampling, etc.

Pending Publication Date: 2021-04-09
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to solve the problems in the prior art that there are no effective sampling points and sampling devices for produced water in various stations of sulfur-containing gas fields, temporary sampling is difficult, risk control is difficult, and the accuracy of sampling results is difficult to be guaranteed. , providing a sour gas field water sampling device and using method

Method used

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  • Sulfur-containing gas field water sampling device and using method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] Such as figure 1 As shown, a kind of sour gas field water sampling device of the present invention comprises:

[0058] The connector 1 is used to connect with the reserved sewage outlet at the bottom of the multiphase flow metering and separation skid to form a sample introduction channel, specifically, the connector 1 is a connecting flange;

[0059] A switch 2 communicates with the connector 1 and is used for opening and closing the sample introduction passage, specifically, the switch 2 is a double-block ball valve;

[0060] A filter 23 is connected with a pipeline, and one end of the pipeline is provided with a quick joint, and the quick joint is used to detachably connect the switch 2 conveniently, and the filter 23 is used to filter solid impurities, such as rust, sand, etc. , specifically, the filter 23 is a Y-type filter;

[0061] The pressure reducing valve 3 communicates with the filter 23 and is used to reduce the fluid pressure in the sample introduction c...

Embodiment 2

[0071] The using method of a kind of sour gas field water sampling device of the present invention, application a kind of sour gas field water sampling device as described in embodiment 1, this method comprises the following steps:

[0072] A. Add water to the neutralizing liquid container 8 to 2 / 3 of the volume of the container, dissolve 100g-200g of zinc acetate or sodium hydroxide reagent in it to form an alkaline solution, and separate the connector 1 from the multiphase flow metering pry The drain port is reserved at the bottom, and the scale of the sampling bottle 71 faces the scale opening of the sampler 7, pushes the sampling bottle 71 upwards to abut the sampler 7, and pulls the sampler 7. The upper ferrule clamps the sampling bottle 71 tightly;

[0073] B. After opening the multi-phase flow metering and separation skid, the sleeve-type sewage valve at the bottom of the multi-phase flow metering and separation skid is reserved, then turn on the switch 2 and the pressu...

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Abstract

The invention relates to a sulfur-containing gas field water sampling device and a use method. The device comprises a connector used for being connected with a reserved sewage draining exit at the bottom of a multiphase flow metering separation pry to form a sample introduction passage, a switch communicating with the connector and used for opening and closing the sample introduction passage, a pressure reducing valve communicating with the switch and used for reducing the fluid pressure in the sample introduction passage, a three-way joint communicating with the pressure reducing valve, a replacement valve communicating with the three-way joint to form a replacement passage, a sampling valve communicating with the three-way joint to form a sampling passage, a sampler communicating with the sampling valve and used for being connected with a sampling bottle, and a neutralization solution container communicating with the replacement valve and the sampler, wherein an alkaline solution is arranged in the neutralization solution container, and the neutralization solution container is used for neutralizing the acid fluid in the replacement passage and neutralizing the acid gas sampled by the sampling bottle. The sampling device is simple in structure, convenient to operate, low in cost, capable of sampling under pressure and free of influence on normal work of other equipment.

Description

technical field [0001] The invention relates to the field of natural gas exploitation, in particular to a sulfur-containing gas field water sampling device and a usage method. Background technique [0002] For sulfur-containing sour natural gas fields, in order to analyze the properties of gas field produced water, monitor the abnormal situation of gas well production water quality, and track the development status of gas reservoirs, it is necessary to regularly sample and analyze the gas field produced water. [0003] At present, there are two main types of liquid sampling devices and methods in sour gas field stations: [0004] A. Take samples directly at the oil pressure gauge on the production wing of the gas tree, remove the pressure gauge and install a high-pressure fluid sampling device, and slowly open the root valve of the pressure gauge to complete the sampling; [0005] B. Through the sewage outlet of the torch separation tank, use ordinary plastic bottles to com...

Claims

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Application Information

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IPC IPC(8): E21B49/08E21B47/00E21B47/06
CPCE21B49/086E21B47/00E21B47/06
Inventor 曾力蔡锁德黄仕林刘鹏刚曹臻蓝辉何海陈曦梁中红骆仕洪杨关键朱国庄绍成龚小平李振鹏柯玉彪黄海洋罗扬李里罗勇陈建名邓辉邹勇
Owner CHINA PETROLEUM & CHEM CORP
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