Cleaning and blockage relieving technology of gathering and transportation system for oil and natural gas field highly containing sulfuric acid

A technology for sour natural gas, gathering and transportation system, which is applied in the field of blocking removal technology and gathering and transportation system of high-sulfuric oil and natural gas fields, can solve problems such as no blocking removal technology for gas gathering and transportation system in natural gas fields, and achieves the effect of not polluting the environment.

Inactive Publication Date: 2013-06-12
PUYANG BAOJIE WANJIA IND
View PDF4 Cites 25 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

So far, there has been no report on the plugging removal process of the ga

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Cleaning and blockage relieving technology of gathering and transportation system for oil and natural gas field highly containing sulfuric acid
  • Cleaning and blockage relieving technology of gathering and transportation system for oil and natural gas field highly containing sulfuric acid
  • Cleaning and blockage relieving technology of gathering and transportation system for oil and natural gas field highly containing sulfuric acid

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0077] Example 1

[0078] For Well 303-3 in a gas field that was blocked, stop natural gas transmission, close the wellhead inlet control valve, drain the gas in the gathering and transportation system, and purge the system pipeline with pure natural gas to vent it.

[0079] Dissolve 10 tons of FeS passivator sodium nitrite and 8 tons of hydrogen sulfide inhibitor N-methyldiethanolamine in 80m 3 Water, pumped into the system to cook for 4 hours, respectively, to achieve the purpose of deodorization and passivation.

[0080] The following prepared cleaning agent aqueous solution was heated to 90°C and soaked in the system for 4 hours. In the sulfur-dissolving cleaning agent aqueous solution, the active ingredients and their concentrations were:

[0081]

[0082] Then, the prepared cleaning agent aqueous solution is heated to 90 ℃ by steam, pressurized by a high-pressure water jet pump, and transported to the cleaning nozzle by a high-pressure hose, and a reaction force is a...

Example Embodiment

[0085] Example 2

[0086] For Well 303-3 in a gas field that has been blocked, in the case of non-stop production, the blocked throttle valve is surrounded by an arc sensor, and then the high-frequency heating host is turned on, and the temperature in the valve is 5 minutes. 70-80℃, the temperature difference between the inside and outside of the valve is 3℃-10℃, and after heating for 3 minutes, the blocked valve will return to normal operation, and the blockage will be solved.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention relates to a cleaning and blockage relieving technology of a gathering and transportation system for natural gas field highly containing sulfuric acid. The cleaning and blockage relieving technology of the gathering and transportation system for the natural gas field highly containing the sulfuric acid comprises a three-section technology, including replacement deodorization, cleaning for blockage relieving and passivation protection. The main technology process comprises a first step of replacement deodorization: scavenging the gathering and transportation system by adopting nitrogen or purified natural gas to replace sulfur-containing gas therein so as to reach the safety standard, circularly filling and soaking the system with alkaline liquid, neutralizing for deodorization and passivating ferrous sulfide; a second step of cleaning for blockage relieving: circularly filling a sulfur scale dissolving and removing agent into the system for 2-6 hours so as to dissolve, disperse and remove corrosive scale and other sulfur-containing accumulated scale in pipelines, wherein the cleaning temperature is controlled within the range of 30 to 90 DEG C at this stage; and a third step of passivation protection: coating cleaned pipeline equipment with a passivating agent or a film forming agent for protection. With the adoption of the blockage relieving technology of the gathering and transportation system for the natural gas field highly containing the sulfuric acid, the inner-wall accumulated scale of the sulfur-containing gathering and transportation pipeline equipment can be completely cleaned away.

Description

technical field [0001] The invention relates to a chemical cleaning technology, in particular to a blocking removal process for a gathering and transportation system of a high sulfuric acid oil and gas field, such as pipelines, equipment, containers and metering instruments. Background technique [0002] Natural gas produced from natural gas fields (hereinafter simply referred to as "gas fields") often contains a large amount of sulfides. For such high-sulfur-containing natural gas, after water-gas separation, sulfur-based dirt is easy to deposit in gas-gathering and transportation pipelines and equipment containers. In particular, during the production process of high sulfuric acid gas fields, elemental sulfur will be precipitated due to the gradual decrease in pressure and temperature of natural gas from the bottom of the well to the wellhead and then to the gathering and transportation system. , and the fracturing fluid residues returned from the bottom of the well conti...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): B08B7/00C23G1/00F17D1/17
Inventor 苗西魁郭强魏建华
Owner PUYANG BAOJIE WANJIA IND
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap