Subsea Engineering Hub

Field development planning is a multidisciplinary process that defines how an oil or gas field will be produced safely, economically, and efficiently over its entire life cycle . This lesson introduces the critical decisions that must be addressed before committing to a development concept. 1. Reservoir Depletion Strategy The first and most fundamental question in field development is: How will the reservoir energy be managed to produce hydrocarbons? Common depletion strategies include: Natural Depletion Production relies solely on the reservoir’s natural pressure. Lower capital cost Production declines as pressure drops Water Injection Water is injected to maintain reservoir pressure and improve recovery. Increases ultimate recovery Requires injection wells and facilities Gas Injection Gas is injected to support pressure or improve sweep efficiency. Common in gas or condensate reservoirs Higher operational and compression requirements 📌 T...

In the oil & gas industry, it is common to see projects that are technically sound, well-designed, and compliant with standards—yet still fail to reach final investment decision (FID), get delayed, or underperform economically. This often comes as a surprise to engineers. From an engineering perspective, a project may look “perfect”: The design is robust Safety margins are respected Equipment selection is optimal Risks are technically mitigated Yet decision-makers may still say no. Why? Because engineering excellence is only one part of the decision-making equation. Behind every major oil & gas decision lies a set of economic and strategic questions, such as: Does this project create sufficient value? How sensitive is it to oil price, cost overruns, or delays? How does risk affect expected returns? Is this the best use of capital compared to other opportunities? Does timing matter more than technical optimisation? In real projects, economics often override technical elegance. T...

  What Is Petroleum Economics? Petroleum economics is the discipline that answers one critical question for any oil and gas project: Is this project worth doing? Behind every field development, drilling campaign, or facilities upgrade lies an economic evaluation that determines whether the project will move forward or be rejected. Technical excellence alone is never enough. A project can be innovative, well-engineered, and technically feasible—yet still fail if it does not create sufficient economic value. At its core, petroleum economics translates engineering decisions into financial outcomes over time . It connects reservoir performance, production profiles, capital investment, operating costs, and schedules to measurable business indicators such as cash flow, profitability, and risk. Why Petroleum Economics Is More Than Just Numbers The question “Is this project worth doing?” sounds simple, but the answer rarely is. Economic evaluation must consider: Capital expenditu...