Gas field sewerage and solid pollutant comprehensive processing technological process

Abstract

The invention relates to a comprehensive treatment process method for sewage and solid pollutants in a natural gas field. The process method comprises five process units, namely, purification treatment for gas production accompanying sewage, purification treatment for drilling mud sewage, biochemical treatment for yielding water and water quality adjustment, fine filtering discharge of the yielding water, mud purification and solidification treatment for the solid pollutants. From the reality of development and production of the natural gas field, the comprehensive treatment process method for the sewage and the solid pollutants in the natural gas field combines environmental protection requirement, has strong comprehensiveness and practicality, is easy to execute, can effectively treat the sewage and the solid pollutants in the natural gas field, changes waste into valuable, effectively reduces environment pollution, and acquires good economic and social benefits.

Description

Technical field: [0001] The invention relates to a process for treating sewage and solid pollutants in the development and production of oil and gas fields, especially natural gas fields, and in the process of gathering and transportation. Background technique: [0002] Natural gas is a clean, efficient and cheap gaseous energy and chemical raw material. It has a wide range of uses and can replace oil and coal resources in many fields. The underground reserves of natural gas are quite abundant, and it is one of the strategic energy sources that can be relied on for a long time in the future. At present, global natural gas exploration and development technology, large-scale storage and transportation technology, and downstream application technology are developing rapidly. In addition, the limited oil and coal resources are in conflict with the high growth of demand. The contradictory nature of pollution makes the strategic position and role of natural gas more and more prom...

AI Technical Summary

Problems solved by technology

[0004] For a long time, natural gas production has been mainly for the separation and recovery of oilfield associated gas, which is usually used in oilfield wastewater treatment where oil production is the main focus. The technology is relatively mature, but it cannot be directly used for gasfield wastewater treatment that specializes in natural gas production.

This is due to the fact that the sewage and solid pollutants in natural gas fields have many sources, contain many pollutants, and are of special nature. In addition, the natural environmental factors of natural gas fields and other constraints make the environmental protection treatment process complicated and special, and the treatment is very difficult.

According to the investigation, there is no mature and reliable process technology for the comprehensive treatment of natural gas field sewage and solid pollutants.

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