31 May 2021 to 4 June 2021
Europe/Berlin timezone

SIMULATION STUDY OF IN-SITU CONVERSION PROCESS IN LOW-MID MATURITY SHALE OIL RESERVOIR

1 Jun 2021, 11:00
15m
Oral Presentation (MS17) Thermal Processes, Thermal Coupling and Thermal Properties of Porous Media: modeling and experiments at different scales MS17

Speaker

Zijie Wang (China University of Petroleum (East China))

Description

Continental shale oil in China is mainly of low-medium maturity. The formation is filled with heavy oil of low mobility and organic matter that unconverted. Horizontal drilling and hydraulic fracturing are insufficient to obtain economic production in such reservoir, thus in-situ heating and transform technology should be applied. To describe the decomposition of solid organic matter, cracking of heavy hydrocarbon, phase behavior and composition evolution, we developed a multiphase multicomponent hydro-thermal coupled numerical model and numerical solution method by considering multistage kinetic reactions. Then the impact of parameters including heating temperature, kerogen concentration, well bottom hole pressure, heating space and initial water saturation on cumulative production is analyzed. The results are summarized as: kinetic reaction rate is controlled by temperature and different reactions take place at variety heating temperature; higher kerogen concentration can enhance cumulative hydrocarbon production after in-situ conversion; low bottom hole can extract oil and gas quickly to prevent from coking; larger heating spacing would weaken the effect of in-situ conversion process, while the product will further crack with too small heating spacing; high water saturation will enhance energy consumption to heat water and reduce the utility ratio of energy, thus dewater process is required to reduce water saturation. This study analyzed shale oil in-situ conversion process based on thermal-reactive flow. The model developed can be used to evaluate the heating process and provide theoretical support for the efficient development of shale oil reservoir.

Time Block Preference Time Block A (09:00-12:00 CET)
Acceptance of Terms and Conditions Click here to agree

Primary authors

Zijie Wang (China University of Petroleum (East China)) Jun Yao Hai Sun (China University of Petroleum (East China)) Dr Lijun Liu (China University of Petroleum (East China)) Xia Yan

Presentation materials

There are no materials yet.