Author(s)

Xin Liu ¹

Affiliation(s)

¹ CNOOC EnerTech-Drilling & Production Co, Tianjin, China

Corresponding Author

Xin Liu

ABSTRACT

Due to the thin reservoir thickness and strong vertical heterogeneity of thin interbedded reservoirs, conventional vertical well development has problems such as low recovery rate and insufficient reservoir utilization. Horizontal well technology has become an important means of efficient development, and the choice of completion method directly determines the development effect. The current common horizontal well segmented completion technology is not fully adapted to the characteristics of thin interbedded reservoirs, which are "thin reservoirs and multiple interlayers". It is prone to problems such as insufficient segmentation targeting and large differences in reservoir utilization due to interlayer obstruction. First, the key development difficulties of thin interbedded reservoirs are identified through reservoir characteristic research; secondly, an adaptability evaluation index system for horizontal well segmented completion technology is constructed, covering core dimensions such as reservoir matching and production capacity contribution rate; finally, combined with field experimental well data, the effectiveness of the optimized segmented completion scheme is verified. Experimental investigation findings demonstrate that the initial daily oil production of Well X reaches 8.6 tons, a 62.3% increase over Well Y (5.3 tons). This is due to the optimized segmentation accurately covering the low-permeability reservoir of the A4 formation, and the low-damage tool achieves a permeability retention rate of 89.5% (while Well Y only has 71.2%), verifying the adaptability of this technology in thin interbedded reservoirs.

KEYWORDS

Horizontal Well Staged Completion Technology; Thin Interbedded Reservoir; Reservoir Adaptability Evaluation; Staged Acid Fracturing Technology

CITE THIS PAPER

Xin Liu, Adaptability of Horizontal Well Segmented Completion Technology in Thin Interbedded Reservoirs. Environment, Resource and Ecology Journal (2025) Vol. 9: 81-88. DOI: http://dx.doi.org/10.23977/erej.2025.090209.

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