Oil and Gas firm Engineering Consultant

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Oil and Gas Industry Engineering Consultants

From feasibility studies and detailed engineering to project execution and commissioning, we provide comprehensive engineering consultancy services for the oil and gas industry. Our expertise covers oil refineries, gas processing plants, LNG facilities, storage terminals, pipelines, and petrochemical projects. With a focus on safety, efficiency, and regulatory compliance, we deliver turnkey engineering solutions that support the growth and modernization of India’s energy sector.

JD Engineering & Consultants helps businesses optimize project performance, reduce risks, and achieve long-term operational success.

Which Oil and Gas Engineering Services Do We Offer?

Our oil and gas consulting engineering services are organised across three core pillars. Each pillar maps to a specific phase and ownership model. Together, they cover every scenario from new plant development to existing facility upgrades across India’s major industrial corridors.

Turnkey Engineering Solutions for Oil & Gas Projects

We own the outcome from concept to handover. One team, one contract, zero scope gaps.

  • Concept to commissioning delivery
  • Vendor selection and procurement
  • Full EPC contract management
  • Schedule and budget accountability
  • Punch list and handover documentation

Engineering Design and Project Management Services

We sit on the owner’s side, controlling contractors and protecting the project investment.

  • Contractor supervision and audit
  • CAPEX forecasting and variance control
  • Schedule tracking with corrective actions
  • Quality assurance and HSE oversight
  • Regulatory approval co-ordination

Engineering Design Services for Oil and Gas industries

Multi-discipline design packages aligned to Indian and international standards.

What Disciplines Are Included in Our Engineering Design Services?

Our in-house multidisciplinary team eliminates the risk of design discontinuity. All eight disciplines are co-ordinated under one project manager, producing integrated packages that reduce field clashes and rework.

Civil and Structural Engineering Services

Civil and structural engineering solutions for oil refineries, petrochemical plants, LNG terminals, gas processing plants, tank farms, and pipeline facilities. Designs comply with IS, API, ASME, and international oil & gas standards to ensure safety, durability, and operational efficiency.

  • Tank farm foundation and bund wall design
  • Pipe rack and structural steel design
  • Geotechnical investigation and pile foundation engineering
  • Industrial plant layout and hazardous area planning

Electrical, Instrumentation, Controls, and ELV Systems

Advanced electrical and instrumentation engineering for oil & gas facilities, refineries, petrochemical plants, LNG infrastructure, and process industries. We deliver reliable power distribution, automation, and process control solutions.

  • Single-line diagrams (SLDs) and cable scheduling
  • DCS, PLC, and SCADA system integration
  • Instrument datasheets and loop diagrams
  • CCTV, PA, access control, and hazardous area classification

HVAC and Building Management Systems (BMS)

Specialized HVAC and BMS engineering for oil refineries, control rooms, LNG terminals, gas processing facilities, and industrial buildings. Our solutions ensure energy efficiency, safety, and environmental compliance.

  • Heat load calculations and energy analysis
  • Industrial HVAC design and duct routing
  • BMS integration and facility automation
  • ASHRAE, ISHRAE, and oil & gas industry compliance

Mechanical Engineering Services

End-to-end mechanical engineering services for oil refineries, petrochemical plants, LNG facilities, gas processing units, and pipeline infrastructure. We focus on process reliability, safety, and operational performance.

  • Piping design, isometrics, and stress analysis
  • Rotating equipment and machinery specifications
  • Pressure vessel and heat exchanger design
  • API, ASME, and international code compliance

Fire Protection Systems

Fire and gas protection engineering for oil & gas plants, refineries, storage terminals, LNG facilities, and petrochemical industries. Designed to meet NFPA, OISD, TAC, and international safety standards.

  • Firewater network and pump system design
  • Deluge, foam, and fire suppression systems
  • Fire and gas detection system engineering
  • NFPA and OISD compliance management

Cleanroom and Environmental Engineering

Environmental engineering Services oil industry  and regulatory compliance services for oil refineries, petrochemical plants, gas processing facilities, and industrial infrastructure projects. We help organizations achieve sustainable and compliant operations.

  • Environmental Impact Assessment (EIA)
  • Effluent Treatment Plant (ETP) design
  • Pollution control and waste management systems
  • CPCB, MoEFCC, and environmental compliance support

Why Choose Our Oil & Gas Engineering Consultants

Every oil and gas plant design and consultancy engagement follows a structured five-stage workflow. Each stage produces defined deliverables and requires owner sign-off before the next begins, ensuring scope control and budget transparency throughout.

01.Feasibility Study and Conceptual Engineering

We begin with a detailed oil and gas feasibility study: technical viability assessment, preliminary cost estimate (Class 5 AACE), regulatory approval mapping across PESO, CPCB, MoEFCC, and site selection evaluation across Gujarat, Maharashtra, or the client’s target state. This stage converts a project idea into a capital decision.

02.Front-End Engineering Design (FEED)

The FEED phase defines scope, equipment lists, plot plan, and Class 3 cost estimate. Our process engineering consultants develop PFDs, preliminary P&IDs, and utility balance. FEED output becomes the contract basis for EPC tendering, reducing change orders during construction.

03.Detailed Engineering and Procurement Support

We produce full construction-ready drawings, specifications, and vendor datasheets across all disciplines. Our procurement support helps clients source compliant, cost-effective equipment from Indian vendors in Pune, Ahmedabad, and Chennai, as well as international suppliers.

04.Construction Management and Site Supervision

Our oil and gas construction management services deploy discipline engineers on-site across India to verify that field execution matches design drawings. Weekly site reports, NCR management, and HSE audits are standard deliverables throughout this phase.

05.Pre-Commissioning, Commissioning, and Handover

We support plant startup with system flush procedures, functional testing, and safety interlock verification. Final deliverables include as-built drawings, operating manuals, and maintenance documentation prepared to Indian Petroleum Act requirements.

PMC vs EPC vs Turnkey: Which Oil and Gas Project Model Is Right for You?

Choosing the right contract model affects cost, risk allocation, and control. This table compares the three primary delivery models we offer so you can match the right structure to your project type.

CriteriaTurnkey (EPC)Project Management Consulting (PMC)Engineering Design Only
Owner Control LevelLow. Contractor manages all decisionsHigh. Owner retains all approvalsFull. Owner self-manages execution
Cost CertaintyFixed lump-sum, high certaintyReimbursable, lower certaintyFixed scope, predictable design cost
Risk AllocationContractor carries most riskOwner carries construction riskOwner carries full project risk
Best Suited ForGreenfield plants, tight deadlinesLarge complex projects, owner capabilityBrownfield additions, phased expansions
Typical India ApplicationNew gas processing plants in Gujarat and RajasthanRefinery expansions in MaharashtraUnit additions at existing petrochemical sites
Our RolePrime ContractorOwner’s RepresentativeLead Engineering Consultant

Why Are We Best Oil and Gas Engineering Consultant Company for Your Project?

Several engineering firms in India offer individual disciplines. Few provide integrated, single-point accountability from feasibility through commissioning. Here is what makes us different.

India-Based with International Code Compliance

We deliver projects across 8 Indian states, applying ASME, API, IEC, NFPA, and ISO codes alongside Indian Standards, PESO, and OISD regulations. No code competency is outsourced.

Single Point of Accountability, FEED to Handover

Unlike oil and gas EPC companies that hand off between phases, we maintain team continuity from conceptual study through commissioning. One project manager, no knowledge loss.

Multidiscipline In-House Engineering

Civil, Structural, Mechanical, Electrical, Instrumentation, HVAC, Fire Protection, Cleanroom, and Environmental engineering are all delivered in-house. No critical discipline is subcontracted without client awareness.

Regulatory Expertise Across India

Deep knowledge of PESO, CPCB, MoEFCC, state PCB approvals, and Petroleum Act requirements across Gujarat, Maharashtra, Rajasthan, Tamil Nadu, and Andhra Pradesh. We manage approvals, not just track them.

Which Sectors Use Our Oil and Gas Plant Design and Consultancy Services?

Our engineering consultancy for oil and gas extends across every major hydrocarbon and adjacent energy sector operating in India.

Petroleum Refining

Engineering consultants for refinery projects, unit revamps, and capacity upgrades

Natural Gas Processing

Compression station design, dehydration, and gas processing plant engineering

LNG and CNG Infrastructure

Regasification units, LNG storage, and CNG dispensing station design

Petrochemicals

Process design for polymer, fertilizer, and specialty chemical manufacturing

Pipeline and Terminals

Pipeline routing, pumping stations, and terminal facility engineering

Captive Power Generation

Power plant engineering integrated within oil and gas facility boundaries

Pharmaceuticals

Cleanroom and GMP-compliant process plant engineering for regulated environments

Water and Utilities

Cooling water, firewater, effluent treatment, and utility system design

FAQs About Oil and Gas Engineering Consultancy in India

What does an oil and gas engineering consultant do?

An oil and gas engineering consultant provides technical guidance and project execution support across the full project lifecycle. The work includes feasibility studies, Front-End Engineering Design (FEED), detailed multi-discipline engineering, procurement support, construction supervision, and commissioning assistance. The primary role is to reduce project risk, control capital expenditure, and ensure that the plant or facility meets technical specifications and Indian regulatory requirements.

What is the difference between PMC and EPC in oil and gas projects?

In a PMC (Project Management Consulting) arrangement, the consultant acts as the owner's representative, overseeing and controlling contractor performance without directly executing the work. The owner retains contractual relationships with all vendors and contractors. In an EPC (Engineering, Procurement, and Construction) contract, a single contractor takes full accountability for all three phases under one contract. EPC offers more cost certainty; PMC offers more owner control. We provide both models depending on your project structure and risk appetite.

What is included in an oil and gas feasibility study?

An oil and gas feasibility study covers: technical viability assessment, preliminary process description, site evaluation, feedstock and utility availability analysis, regulatory approval mapping (PESO, CPCB, MoEFCC, state PCBs), Class 5 AACE cost estimate, and a risk register. In India, this phase also identifies state-specific clearance requirements that vary between Gujarat, Maharashtra, and Tamil Nadu. The study gives the project owner the information needed to make a capital investment decision with confidence.

Do you follow Indian Standards alongside international codes like ASME and API?

Yes. All our engineering designs are delivered in compliance with the applicable Indian Standards (IS codes), including IS 456 for concrete, IS 800 for structural steel, and IS 3043 for earthing. Simultaneously, we apply international codes including ASME VIII for pressure vessels, API 650 for storage tanks, IEC 60079 for hazardous area classification, NFPA 11 and 13 for fire protection, and ISO 9001 for quality management. Where Indian Standards and international codes differ, we apply the more conservative requirement.

How long does an oil and gas engineering project typically take in India?

Project duration depends on scope and complexity. A feasibility study typically takes 6 to 10 weeks. A FEED study ranges from 3 to 6 months. Detailed engineering for a mid-scale gas processing plant takes 9 to 18 months. Full EPC delivery for a greenfield facility in India commonly runs between 24 and 42 months, including regulatory approvals. Brownfield modifications and unit additions are generally 30 to 50 percent shorter. We provide project-specific Gantt schedules during the initial project scoping discussion.

Can you handle both greenfield and brownfield oil and gas projects?

Yes. Greenfield projects involve designing a new facility on a vacant site, where our team develops all engineering from concept. Brownfield projects involve modifying or expanding an existing operating plant, which requires careful tie-in engineering, hazard management, and production continuity planning. We have delivered both types across refineries in Maharashtra, gas plants in Gujarat, and petrochemical facilities in Andhra Pradesh. Each brownfield project begins with a plant survey and existing document review before any new design work starts.

What regulatory approvals do oil and gas projects require in India?

Oil and gas projects in India require approvals from multiple authorities depending on the facility type. Key approvals include PESO (Petroleum and Explosives Safety Organisation) for storage and handling, MoEFCC for Environmental Clearance (EC), state Pollution Control Board (PCB) for Consent to Establish and Consent to Operate, factory inspector approvals under the Factories Act, and local municipal clearances. For LNG and CNG projects, PNGRB (Petroleum and Natural Gas Regulatory Board) authorisation is also required. We manage the preparation and submission of all these applications as part of our PMC and turnkey services.

Do you provide fire protection engineering services for oil and gas plants?

Yes. Our fire protection engineering scope covers firewater network design and hydraulic calculations, firewater pump station design, deluge and foam-water sprinkler systems for hydrocarbon storage areas, dry chemical suppression for specific equipment, fire and gas detection system layout, and emergency shutdown (ESD) system integration. All designs comply with NFPA 11 (foam), NFPA 13 (sprinklers), NFPA 72 (fire alarm), OISD 116, and TAC requirements applicable to Indian oil and gas facilities.

Can you support international oil and gas projects from India?

Yes. We deliver engineering design packages and PMC services for projects in the Middle East, Southeast Asia, and Africa from our India offices. Remote delivery includes all engineering documentation, vendor review, and project controls support. Where on-site supervision is required, we deploy experienced engineers from our India team to the project location. Our competitive fee structure, combined with the quality of India-trained petroleum engineers, makes this an attractive model for international clients with FEED and detailed engineering requirements.