How to Optimize the Use of Chemical Additives in Oil and Natural Gas Extraction: A Step-by-Step Practical Guide

Photo: Documerica / Unsplash

Oil and gas extraction is a complex process in which chemical additives play a key role—from increasing rock permeability to preventing equipment corrosion. The correct selection and dosing of these substances can significantly impact extraction efficiency, infrastructure lifespan, and the overall economics of the project. In this article, we focus on practical steps to optimize the use of additives at various stages of extraction, including reservoir condition analysis, selection of suitable additive types, and monitoring their effectiveness. We will also discuss the principles of safe handling and storage, which are essential for compliance with legislative requirements and environmental protection.

1. Analysis of Extraction Conditions and Selection of Suitable Additives

The first step in optimizing the use of chemical additives is a thorough analysis of the specific conditions of extraction. Each oil or natural gas reservoir has unique characteristics, such as the composition of the raw material, pressure, temperature, water content, pH, or the presence of undesirable substances (e.g., hydrogen sulfide, salts, paraffins). These factors significantly influence the selection and effectiveness of additives. For example, with a high water content, it is crucial to use demulsifiers that separate water from oil, while in reservoirs with a high paraffin content, crystallization inhibitors are effective in preventing pipeline clogging.

For the correct selection of additives, it is essential to conduct laboratory tests on samples from the specific reservoir. Standard testing methods verify the compatibility of additives with the extraction mixture, their stability under operating temperatures and pressures, and their effectiveness in real conditions. It is also important to consider the economic aspect – additives should be effective at the lowest possible concentration to minimize costs. At this stage, it is advisable to collaborate with a chemical supplier who has experience with similar applications and can provide technical support.

2. Additive Dosage: Precision and Process Control

Correct dosing of additives is a critical factor in achieving the desired effect without waste or undesirable side effects. Too low a dose may result in insufficient effectiveness, while excessive amounts increase costs and may cause compatibility issues or equipment corrosion. Dosing is typically controlled based on the mass or volumetric flow of the extraction mixture and optimized through continuous monitoring.

Modern mining systems often use automated dosing units that enable precise and consistent delivery of additives into the process. These systems can be connected to sensors monitoring key parameters such as viscosity, water content, or pH, and automatically adjust dosing in real time. For smaller operations or temporary applications, manual dosing pumps are used, though their performance must be regularly checked and calibrated. In any case, it is important to keep records of dosing and efficiency to continuously optimize the process.

Photo: Arvind Vallabh / Unsplash

3. System monitoring and maintenance: The key to long-term efficiency

Effective use of chemical additives requires regular monitoring of their efficiency and the condition of extraction equipment. This includes analyzing samples of the extraction mixture before and after additive application, checking corrosion rates, monitoring the formation of deposits or foam, and evaluating emulsion stability. These parameters are measured using standard laboratory methods, and the results are used to adjust dosing or replace the additive if necessary.

Maintenance of dosing equipment is just as important as the monitoring itself. Additives can be aggressive toward pump materials, pipelines, or tanks, so it is essential to regularly inspect their condition and perform preventive maintenance. For example, corrosion inhibitors may lose effectiveness over time if a layer of deposits forms on the equipment surface, preventing their action. In such cases, the system must be cleaned and the additive reapplied. It is also crucial to adhere to safety and health protection principles when working with chemicals, including the use of personal protective equipment and compliance with REACH and CLP regulations.

4. Cost Optimization and Environmental Aspects

Optimizing the costs of chemical additives does not only mean reducing their consumption but also selecting products with the best price/performance ratio. This involves comparing different types of additives, their effectiveness under given conditions, and the costs of their transportation and storage. Sometimes, it may be more advantageous to use a more expensive but more effective additive at a lower concentration than a cheaper product that requires higher dosing. It is also important to consider synergistic effects between different additives—for example, a combination of a corrosion inhibitor and a demulsifier may be more effective than their separate use.

Environmental aspects play an increasingly important role in modern extraction. Additives should be selected to minimize their impact on the environment, both during extraction and in subsequent processing or waste disposal. This includes preferring biodegradable products, adhering to emission limits, and proper waste handling in accordance with applicable regulations. For example, some surfactants used as demulsifiers can be toxic to aquatic organisms, so it is necessary to choose alternatives with lower ecotoxicity. Chemical suppliers often provide safety data sheets and certifications that facilitate the selection of more environmentally friendly solutions.

Photo: WORKSITE Ltd. / Unsplash

4. Evaluating additive compatibility with extraction equipment and media

Before deploying any additive, it is essential to verify its compatibility with the materials of the extraction equipment and the composition of the extraction media. Corrosive effects, scale formation, or undesirable chemical reactions can lead to damage of pipelines, pumps, or separation tanks. Standard testing methods are used to assess the resistance of both metallic and non-metallic components (e.g., seals, coatings) to the specific additive under operational temperatures and pressures. Special attention is required for additives based on acids, strong alkalis, or organic solvents, which may accelerate material degradation.

Another important step is the analysis of the additive’s interaction with extraction fluids—oil, water, gas, and solid particles. For example, some surfactants may cause emulsification of water and oil, complicating subsequent separation processes. Laboratory tests on samples from a specific reservoir help predict potential issues, such as foam formation, salt precipitation, or changes in viscosity. The results of these tests then serve as a basis for adjusting the additive’s composition or selecting an alternative solution.

5. Dynamic Adjustment of Dosage According to Changes in the Extraction Process

Extraction conditions change over time—reservoir pressure decreases, the water content in the extraction mixture increases, or the gas composition changes. Static additive dosing can thus lead to wastage or, conversely, insufficient effectiveness. Modern systems enable continuous monitoring of key parameters (e.g., flow rate, temperature, water content, pH) and automatic real-time adjustment of dosing. For instance, an increase in water content in oil requires a higher dose of demulsifying agents, while a drop in pressure may necessitate adjusting the amount of hydrate inhibitors.

For effective dynamic control, it is advisable to use predictive models based on historical data and real-time measurements. These models can estimate the evolution of extraction conditions and optimize the dosing of additives in advance. For example, if an increase in reservoir temperature is anticipated, the amount of thermostable inhibitors can be reduced ahead of time, thereby saving costs. Implementing such a system requires collaboration with the additive supplier, who will provide technical support and model calibration for the specific application.

6. Work Safety and Handling of Chemical Additives at Extraction Sites

Working with chemical additives at drilling platforms or wells requires strict adherence to safety protocols. Most additives used in oil and gas extraction fall under the REACH and CLP/GHS regulations, meaning they are classified as hazardous substances (corrosive, toxic, flammable, etc.). Employees must be trained in the handling, storage, and disposal of these substances, including the use of personal protective equipment (PPE) such as safety goggles, gloves, or respirators. Storage areas must be equipped with fire suppression systems, emergency showers, and neutralization kits.

An important aspect is also the prevention of leaks and environmental contamination. Additives should be stored in sealed containers with clear CLP/GHS labeling, and handling should take place under controlled conditions. During dosing, closed systems with minimal risk of leakage should be used, such as automatic dispensers with safety valves. In the event of an accident, an emergency plan must be available, which includes procedures for personnel rescue, containment of the substance, and subsequent decontamination of the affected area.

Need help selecting additives for mining?

Every deposit has its specific requirements – from temperature conditions to the chemical composition of rocks. GCG Group provides complete technical documentation for supplied raw materials and advises on selecting the optimal solution for your specific conditions. Contact us – or browse our catalogue of over 1,300 products.