Method for automatic load distribution between low-temperature separation process lines with air cooling units at complex gas treatment units at peak gas production loads

The automated control system addresses the lack of precise density and flow rate control in low-temperature gas separation units by adjusting load distribution using PID controllers and proportionality coefficients, ensuring stable natural gas quality and reducing equipment failures during peak loads.

RU2865137C1Active Publication Date: 2026-06-30OBSHCHESTVO S OGRANICHENNOJ OTVETABTVENNOSTJU GAZPROM DOBYCHA JAMBURG
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Patent Information

Application Number
RU2025138094
Authority / Receiving Office
RU · RU
Patent Type
Patents
Current Assignee / Owner
Filing Date
2025-12-24
Publication Date
2026-06-30
Estimated Expiration
2045-12-24

AI Technical Summary

Technical Problem

Existing methods for automating low-temperature gas separation units lack precise control over the density and flow rate of natural gas supplied to the main condensate pipeline, leading to reduced quality and potential equipment malfunctions due to uneven load distribution and equipment condition variations during peak gas production loads.

Method used

An automated process control system that adjusts the load distribution between low-temperature separation process lines using PID controllers and proportionality coefficients to maintain the required density and flow rate of natural gas, taking into account the equipment condition and adhering to operational standards.

Benefits of technology

This system ensures stable quality of natural gas preparation for long-distance transportation by maintaining the density and flow rate within specified limits, reducing the risk of equipment failures and improving operational reliability during peak loads.

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Abstract

FIELD: gas production.SUBSTANCE: invention relates to the field of production and preparation of natural gas from Valanginian deposits for long-distance transportation at complex gas treatment units (CGTU) during peak gas production loads at oil and gas condensate fields (OGCF) in the Far North of the Russian Federation, in particular to the automatic load distribution between process lines (PL) of low-temperature separation with air cooling units (ACU) during peak gas production loads, ensuring maintenance within the required limits of the level of unstable gas condensate (OGC) in three-phase liquid separators (LS), control of its density and flow rate at the CGTU when feeding into the main condensate pipeline (MCP). The purpose of the invention is to provide automatic load distribution between PL with ACU during peak loads for gas production and maintaining the required filling level of the natural gas storage tank in the natural gas storage tank, managing its density and consumption at the gas treatment plant, taking into account the condition of the equipment involved in the process of preparing natural gas for long-distance transport, while adhering to the standards and restrictions stipulated by the process regulations of the unit for its various operating modes. Automatic load distribution between the transformer substation is provided with the automatic cooling system and preparation of the OGC from natural gas at all stages of the CGTU operation using dry gas at the CGTU at peak loads of consumption on the part of consumers.EFFECT: maintaining the filling level of OGC in the LS within the required limits, controlling its density and consumption at the CGTU, taking into account the condition of the equipment involved in the process of preparing natural gas for long-distance transport, while observing the standards and restrictions stipulated by the process regulations of the unit for its various operating modes.4 cl, 2 dwg
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