TITLE:
Characterization of Productivity Construction Patterns and Medium-to-Long-Term Production Prediction of Adjustment Wells in Offshore Oilfields
AUTHORS:
Shu Wei, Jianguo Liu, Zhaozhao Qu, Peng Wang, Shujian Xie
KEYWORDS:
Offshore Oilfield, Adjustment Wells, Potential-Tapping Types, Productivity Coefficient, Production Prediction
JOURNAL NAME:
Journal of Geoscience and Environment Protection,
Vol.13 No.10,
October
11,
2025
ABSTRACT: In recent years, Bohai Oilfield has continuously intensified its adjustment and potential tapping efforts. Adjustment wells have become a key measure for increasing production in offshore oilfields, contributing significantly to output. However, with the persistent rise in water cut and the increasingly complex distribution of remaining oil, the difficulty of predicting the medium-to-long-term production of adjustment wells has increased substantially, severely constraining the accuracy of development planning. To address this issue, this study systematically analyzes the productivity construction patterns of different potential-tapping types in Bohai Oilfield based on dynamic development data and incorporates a key quantitative indicator of productivity construction effectiveness—the Productivity Coefficient (PC). An innovative multi-dimensional evaluation system for the effectiveness of productivity construction in offshore oilfields has been developed, and a methodology for predicting the medium-to-long-term production of adjustment wells has been established. Application of this method in the Bohai BZ Oilfield indicates that the future average annual production scale of adjustment wells is approximately 7 × 104 tons to 10 × 104 tons, with prediction results aligning well with actual development dynamics. This research provides a theoretical foundation and decision-making support for medium-to-long-term production planning in Bohai Oilfield.