India’s expanding upstream drilling programme demands API 6A wellhead equipment built for onshore basins and deepwater conditions alike. This guide covers casing head housings, casing head spools, and hanger selection for Indian drilling programmes.
As India’s upstream oil and gas sector accelerates its drilling and completion programs across onshore and offshore basins, the pressure integrity of wellhead connection components, flanges, crosses, and tees, has become a critical engineering consideration for operators, EPCs, and procurement teams.
Why Wellhead Assembly Selection Is More Complex Than It Appears The wellhead assembly — the integrated stack of casing heads, casing spools, tubing head, Christmas tree, and gate valves that sits at the top of every oil and gas well — is the first and most visible piece of production infrastructure on any well site. […]
Why Gate Valve Specification Is a Critical Procurement Decision In upstream oil and gas operations, the gate valve is one of the most load-bearing decisions in well construction. Installed at every isolation point in a wellhead assembly and Christmas tree — master valve, wing valve, kill wing valve, swab valve — it is the surface […]
Executive Summary: India’s Upstream Ambition and the Infrastructure It Demands India’s upstream oil and gas sector has entered a period of structural investment intensity that is unprecedented in modern Indian energy history. The sector is projected to attract USD 25 billion in exploration and production investment, supported by the government’s reform agenda through the Hydrocarbon […]
Executive Summary: India’s Upstream Urgency Demands Faster Field Execution India’s upstream oil and gas sector is accelerating at a pace not seen in decades. The Oil and Natural Gas Corporation has launched a $20 billion deepwater exploration program under its “Samudra Manthan” mission, one of the largest offshore drilling tenders globally in recent years, targeting […]
Executive Summary: India’s Upstream Drilling at a 30-Year Peak India’s upstream oil and gas industry has entered a transformational phase. In early 2025, ONGC—India’s largest state-owned explorer—reached its highest level of drilling activity in over three decades, initiating approximately 45 exploration and development wells and raising upstream capital expenditure by nearly 65% for FY 2024–25 […]
TL;DR India’s mature oilfields (Rajasthan, Assam) face pressure decline, water ingress, and integrity risks. Production packers ensure zonal isolation and prevent crossflow. Surface-Controlled Subsurface Safety Valves (SSSVs) provide fail-safe well control. API-compliant completion systems reduce intervention frequency by up to 30–40% in aging wells. Integrated completion engineering is now critical for extending well life and […]
Compliance Is No Longer Optional in India’s Upstream Sector India’s upstream oil and gas sector is entering a decisive phase. With increased exploration under OALP (Open Acreage Licensing Policy), deeper drilling programs by ONGC, and rising private participation, the operational environment is becoming significantly more complex. High-pressure, high-temperature (HPHT) wells, sour service conditions, and deeper […]
India’s upstream sector is entering a new execution cycle. Operators are compressing timelines, lowering cost per well, and tightening compliance standards. In this environment, design philosophy directly affects project speed. The debate is practical: Should operators rely on rigid standardisation? Or should they adopt controlled customisation for faster deployment? Across Indian onshore and offshore fields, […]
