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Professor Dong Changyin to Speak at Key Workshop on Enhanced Recovery for Kuqa Foreland Gas Reservoirs

Author:Admin  Time:2024-8-5 10:38:30

On November 21-22, 2023, the International Workshop on Enhanced Recovery for Fractured Low-Porosity Sandstone Gas Reservoirs was held in Korla, Xinjiang. The event was organized by the Tarim Oilfield Company and the PetroChina Research and Development Center for Ultra-Deep Complex Oil and Gas Reservoir Exploration and Development Technology. The workshop focused on "Strategies for Sustained Stable Production and Enhanced Recovery in Fractured Low-Porosity Sandstone Gas Reservoirs of the Kuqa Foreland."

Professor Dong Changyin from the Flow-Solid Control and Well Completion Laboratory was invited to present an online keynote report titled "Challenges and Solutions in Well Completion Technology for Ultra-Deep Gas Reservoirs in the Kuqa Foreland Aimed at Enhanced Recovery."

In his report, Professor Dong discussed the background and challenges, the current state of deep oil and gas well completion technology, and provided suggestions for well completion in ultra-deep fractured sandstone gas reservoirs in the Kuqa Foreland. He emphasized the rapid development stage of deep/ultra-deep reservoir exploitation, with a focus on the smooth implementation of drilling and lifting processes. Considering the difficulty and cost, current well completion methods primarily use open-hole screens and small-hole perforated completions from a drilling perspective. However, these methods are not fully effective in addressing long-term sand instability issues, and small holes limit sand control techniques. Preliminary attempts are being made to apply open-hole slotted liners and perforated pipes for collapse prevention and sand control in completions.

Professor Dong highlighted the urgent need for a systematic approach to well construction and completion for long-term efficient extraction and enhanced recovery. All types of reservoirs, including deep and ultra-deep, require coordinated strategies for water control, stability, and production enhancement. Conventional sand and water control technologies are significantly limited in deep reservoirs, posing a substantial challenge in advancing completion technology for deep and ultra-deep reservoirs. Future advancements in digital, intelligent, and integrated smart completion technologies for deep reservoirs face a long road ahead, underscoring the critical role of drilling and completion engineers in meeting these challenges.



 


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