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[China Instrument Network Instrument R&D] Recently, the Office of the 863 Program Resources and Environment Technology Organization organized an expert in Beijing on the “Key Technology for Wellbore Viscosity Reduction of Ultra-deep Heavy Oil Reservoirs†in the “Twelfth Five Year Plan†863 Program's resource and environmental technology field. acceptance.
At the acceptance meeting, the participating experts considered that the project completed the prescribed research tasks, reached the project assessment index, and agreed that the project passed the technical acceptance.
The “key technology for wellbore viscosity reduction in ultra-deep heavy oil reservoirs†project focuses on research and development through production, research and development, and uses large-scale and typical ultra-deep wells in the heavy oil field (Tahe oilfield) as research object. The wellbore is easy to clog and lift in heavy oil extraction. With difficulties such as rising difficulty, high energy consumption, low mining efficiency, and large amount of dilute oil, theories, methods, and techniques for the efficient development of ultra-deep oil in ultra-deep wells have been developed.
After four years of research, the project has formed a new type of highly viscous oil efficient chemical viscosity reduction technology system, ultra-thick oil wellbore viscosity reduction and lifting technology, oil and water interface intelligent imaging detection technology, heavy oil well fiber testing equipment and special logging optical cable Breakthroughs in key technologies and core technologies such as technology. The research methods for high-temperature and high-pressure wellbore flow laws established by the project have enriched the means and theoretical results of high-temperature and high-pressure heavy oil-water two-phase flow patterns in China; the typical ultra-deep well oil fields such as Tahe Oilfield and Tarim Oilfield have been used as demonstration areas. The field application demonstration of viscosity reduction technology and bituminous dissolving and blocking agent was carried out. The developed optical fiber testing instruments and special well logging optical fiber technology were popularized and applied in Xinjiang Oilfield and Tuha Oilfield, realizing long-term, real-time and accurate measurement of wellbore temperature and pressure changes.
The research results of the project provide important technical support for the development of ultra-deep heavy oil reservoirs in China, and also provide important references for the exploitation of similar oil reservoirs at home and abroad.
(Original Title: High and New Technology Helps China's Development of Super-Deep Well Super-heavy Oil - 863 Program “Key Technology for Wellbore Viscosity Reduction in Ultra-deep Heavy Oil Reservoirs†through Technical Acceptance)