Reservoir characterization

New Multilayer Boundary-Detection Service in Bohai Bay, Northern China

A new multilayer boundary‑detection service has been introduced to resolve the geological uncertainty associated with horizontal wells in Bohai Bay. Geosteering and real time reservoir characterization were used to reduce the uncertainty.

Fig. 1—Location of Bohai Bay.
Source: SPE 176442

Bohai Bay is northern China’s largest offshore basin. Its predominant depositional environment is a shallow delta and a meandering river system complicated by faults, an arrangement that leads to fully developed interbed interference and high geological uncertainty when horizontal wells are drilled within the greenfield. As a solution to resulting challenges, a new multilayer boundary‑detection service has been introduced. This paper illustrates a case study in which this technology was applied.


In 1967, CNOOC began commercially operating the oil and gas resources of the Bohai Sea (Fig.

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