Abstract
The main zone of production of Sinian gas reservoirs in the Sichuan Basin (China) is the Deng 4 member of the Gaoshiti–Moxi structure. In the Deng 4 member, the rock type is mostly dolomite, and the main types of storage space are brecciated interporosity and large-scale interporosity characterized by low porosity and low permeability (average porosity: 3.21%, average permeability: 2.19 mD). In the Gaoshiti structure of the Deng 4 member gas reservoir, annual gas production of 60 billion cubic meters has been realized using differential segmented acid fracturing stimulation technology. However, with development of the Moxi structure, such technology is unable to adapt the reservoir because it requires continuous optimization according to reservoir characteristics. To provide effective support for optimization of reservoir stimulation technology, this study performed experiments using a large-scale true triaxialacid fracturing model. On the basis of the simulation of the reservoir reconstruction process, optimization of the process was investigated, an optimization scheme was proposed, and a field test was performed. The results, which indicated that gelling acid fracturing technology can effectively improve the stimulation effect of the Deng 4 member of the Moxi gas reservoir and substantially increase single-well production, could provide technical support for enhanced production of the Gaoshiti–Moxi gas reservoir.
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
