Patricia works across the full energy value chain and understands the key risks and interface issues for each part of the process. She is our go-to lawyer for all energy projects advice.

Chambers Global, 2025

Patricia Tiller is a leading LNG lawyer with more than two decades of front-line experience guiding sophisticated clients through every phase of complex energy and infrastructure projects. She advises governments, sponsors, developers, financiers and international contractors on the structuring, development and execution of high-value LNG import and export projects, as well as on the establishment of robust regulatory regimes for LNG receiving, processing and downstream natural gas distribution.

Recognized for her commercial acumen and deep sector insight, Patricia has helped shape transformational LNG projects across six continents. Her practice spans the full suite of LNG agreements, including long-term LNG sale and purchase agreements, LNG time charter parties, and terminal use arrangements for both import and export facilities. She has been a key advisor on multiple first-of-their-kind projects, both floating and onshore, helping clients navigate novel commercial structures, technical interfaces and cross-border risk profiles.

Alongside her LNG focus, Patricia brings market-leading experience in upstream oil and gas transactions across Asia, the Middle East and Africa. She regularly advises governments, national oil companies, international oil companies and independent E&Ps on the full spectrum of upstream arrangements, including concessions, production sharing agreements, joint operating agreements and complex farm-in and farm-out transactions. Her work in frontier and mature basins alike has equipped her with a deep understanding of subsurface, operational and geopolitical risk — enabling clients to secure strategic acreage, optimize portfolio value and structure commercially resilient upstream ventures.

Patricia serves as co-chair of the Association of International Energy Negotiators (AIEN) LNG Sale and Purchase Agreement Model Contract Committee, contributing to industry-standard documentation used worldwide. 

Before joining Bracewell, she was the managing partner of an international law firm’s Dubai office, advising on major energy transactions throughout the Middle East and beyond.

Patricia is English law qualified.