Process engineering plays an important role at every level of the oil and gas industry, from the extraction of raw resources to the refining of those resources and their turning into usable fuels. The process engineers are the problem solvers who create, access and enhance the systems that ensure the operation runs safely, efficiently and within environmental regulations. Their role is increasingly essential as industry moves toward cleaner energy and more stringent regulations.

In this blog, we’ll explore how process engineering applies for industrial operations across the oil and gas industry. You’ll also get a sense of the day-to-day work — everything from system design and equipment selection to troubleshooting and performance optimization.

We’ll examine how process engineers must collaborate with other disciplines—piping, electrical, and instrumentation—to execute successful projects. Whether you’re working on a new development or a plant upgrade, knowing the impact of process engineering—and how experienced teams such as Rishabh Engineering are incentivized to boost it—can help guide you toward more successful project outcomes.

In simple terms, process engineering is about making sure every part of the production system works efficiently and safely converting raw resources like crude oil or natural gas into usable products such as fuel or petrochemicals.

Process engineers play a critical role in:

• Designing systems for drilling and extraction
• Refining and converting raw materials into end products like gasoline and jet fuel
• Safely transporting these products via pipelines or tankers
• Managing storage and distribution networks

They focus on improving system performance while balancing cost, safety, and environmental impact. It’s a behind-the-scenes job, but without them, operations would grind to a halt.

Our team offers comprehensive support across all critical phases of project execution, ensuring clients achieve operational efficiency, safety, and cost control.

Listed are the core areas of how we as a multidiscipline design engineering company can support;

• FEED (Front-End Engineering Design): FEED is crucial in determining the technical and economic viability for a project. Front End Engineering Design comprises of creating PFDs, P&IDs, and carry out detailed process simulations. These deliverables facilitate an initial cost estimation, define process needs and help mitigate project risks. As the team boasts of deep domain expertise, one can expect complete clarity in scope, timelines, and planning for investments as well.
• Detailed Engineering: We provide a full suite of detailed engineering services, including equipment sizing, line lists, HAZOP studies, isometrics, layouts, and BOM generation. Through a multidisciplinary approach to each individual design, the team works to ensure that it meets project specifications and safety standards. Rishabh works on the latest software like Aspen HYSYS, AutoCAD Plant 3D, SmartPlant, CAESAR II, and STAAD. Pro for creating accurate and code-compliant designs.
• Process Optimization & Debottlenecking: Our process simulation & analysis services enable our team to improve plant efficiency and output. They help pinpoint underperforming areas and suggest changes, like increasing capacity, throughput, and safety. Whether by re-routing lines or resizing equipment, the team helps clients deliver measurable performance improvements.
• Brownfield & Greenfield Project Support: Our team is equally adept at managing both brownfield (revamp) and greenfield (new build) projects. From design validation to integration of new systems with existing infrastructure, the team ensures seamless execution with minimal downtime. Emphasis on process safety and operability remains central, regardless of project complexity or scale.

Our team of engineers & designers produce various vital documents that form the basis for design, procurement, and operations, emphasizing precision and teamwork. These deliverables ensure that all process elements—from safety response to flow design—are meticulously thought out and conveyed.

Listed below are some of the standard deliverables that our team produces during project execution phase;

• PFDs (Process Flow Diagrams): These give a clear, big-picture view of the process flow—from raw materials to final output—making it easier to understand how everything connects.
• P&IDs (Piping & Instrumentation Diagrams): P&ID detailed drawings showcase all the piping, instruments, and control systems, helping engineers and operators know exactly how the plant works.
• Equipment Datasheets: They outline all the technical specs and requirements for equipment, ensuring smooth procurement, design, and operation down the line.
• Control Philosophy: This document explains how each part of the process will be controlled and automated to ensure safe and stable operations.
• Hydraulic Calculations: These calculations determine how fluids move through the system, helping size pipes and pumps correctly for efficient flow.
• Heat & Material Balance Sheets: They show energy and material flow across the process, helping optimize performance and identify areas for improvement.
• Cause & Effect Diagrams: These diagrams map out how the system should respond to alarms or failures, ensuring safety and quick action during unexpected events.

Case Study 1: Thermal Design of Dry Expansion Type Heat Exchanger

Client:

A US-based engineering company specializing in the design and manufacturing of industrial heat transfer equipment.

Project Overview:

The client partnered with Rishabh Engineering for the thermal design and performance validation of a dry expansion heat exchanger (DX HX) intended for use in an HVAC application. The objective was to ensure the heat exchanger met the desired thermal performance parameters, particularly under varying operational loads and environmental conditions.

Challenge:

The main challenge was to accurately design a coil that could handle specific refrigerant properties (R-410A) while ensuring optimal thermal transfer efficiency, compact design, and compliance with pressure drop limits. Additionally, the design needed to meet ASHRAE standards and deliver consistent performance with fluctuating air and refrigerant temperatures.

Solution:

Rishabh’s process engineering and thermal design team used advanced simulation tools like AHRI/ASHRAE-based design methodologies and internal tools for coil selection and analysis. We conducted detailed thermal sizing and ensured optimal fin geometry, tube arrangement, and refrigerant circuiting. The design met all performance requirements, including total heat rejection capacity, airside pressure drop, and refrigerant side pressure drop. Our expert validation and optimized design approach enabled the client to proceed confidently to the next stage of product development, saving time and reducing design rework.

Case Study 2: Designing of Flooded-Type Evaporator for Chilling Plant

Client:

A leading US-based global manufacturer of energy-efficient commercial and industrial HVAC systems.

Project Overview:

The client needed support in designing a flooded-type shell and tube evaporator for a custom chiller plant. Rishabh Engineering was tasked with the thermal and mechanical design of the equipment in compliance with ASME standards, ensuring efficient heat transfer and operational reliability.

Challenge:

The key challenge was to accurately design the evaporator to handle the specified cooling loads while ensuring optimal refrigerant distribution and maintaining efficiency under flooded conditions. The project required precision in thermal calculations and selection of appropriate materials and dimensions to meet the client’s performance and safety standards.

Solution:

Rishabh Engineering’s mechanical design team used HTRI and ASME Section VIII, Div. 1 codes to perform the complete thermal and mechanical design of the evaporator. We delivered detailed fabrication drawings, design calculation reports, and 3D modeling support to streamline manufacturing. Our team ensured the solution was efficient, compliant, and met the client’s custom requirements for heat exchanger design.

The oil and gas sector faces daily obstacles such as shifting project requirements, strict deadlines, safety issues, and constantly evolving laws. Rishabh Engineering uses a hands-on, meticulous approach based on diverse experience to assist clients in overcoming these obstacles. We provide solutions that keep projects on schedule by bringing complexity to light and fusing clever design with in-depth industry knowledge. Here are some examples of the engineering problems we have assisted in resolving in the industry.

• Maintaining compliance with safety & environmental regulations (OSHA, API, ASME, etc.): Rishabh ensures every design meets the latest safety and regulatory standards, helping clients stay compliant and avoid costly penalties. Our team stays updated with global codes to build safer, smarter systems.
• Reducing energy consumption & emissions: We help clients cut down on energy use and lower emissions through smarter process design and system optimizations supporting sustainability goals without compromising output.
• Managing complex process interactions in harsh environments: From offshore platforms to extreme climates, Rishabh’s engineers design systems that perform reliably even under tough operating conditions.
• Customizing scalable process designs to meet client needs: Every project is different. We tailor process solutions that not only fit today’s requirements but also scale easily as operations grow or evolve.

For operations in the oil and gas industry to be safe, effective, and prepared for the future, process engineering is essential. Process engineers assist in bridging the gap between technical design and practical performance from conception to commissioning. Our process engineering services enable clients to overcome difficult problems, satisfy regulatory standards, and improve operational efficiency by combining in-depth domain knowledge, cutting-edge tools, and a collaborative mentality. We provide clear and accurate support for projects at every level, whether they include debottlenecking, greenfield development, or brownfield renovation.

We can help optimize oil & gas operations with specialist process engineering support that boosts safety, compliance, and efficiency!