Dongfang Geophysical Prospecting Field Has Achieved Multiple Breakthroughs

Source: www.gulfoilandgas.com 4/20/2021, Location: Asia

The reporter learned from the Eastern Institute of Geophysical Prospects that from the end of 2020 to the first quarter of 2021, the former units of the Eastern Institute of Geophysical Prospects quickly deployed elite troops. Deploying high-performance computers and supporting software, based on the six major basins, continue to improve processing and interpretation supporting technologies in five major areas of lithology, marine carbonate, foreland thrust belt, shale oil and gas, and new areas and new areas, and cooperate with domestic Many breakthroughs have been achieved in the exploration and development of oil and gas fields, which have made important contributions to the exploration and development of oil and gas fields.

In the field of lithology and stratigraphy, in view of the precise identification of stratigraphic lithological traps in the Junggar Basin and the prediction of sweet reservoirs, the use of micro-logging constrained tomographic static correction, full-depth integrated modeling and "true" surface pre-stack depth migration, etc. A number of the latest processing technologies have greatly improved the imaging quality of seismic data; through broadband iterative inversion, pre-stack reservoir probability prediction, and integration of seismic geology and engineering, the prediction accuracy of high-quality reservoirs has been effectively improved.

In the field of marine carbonates, the integration of processing and interpretation in the Dengying Formation in the Gaomo area of ??central Sichuan Province has been quickly completed, and the "double high" processing technology and quantitative prediction specifications for the formation of carbonate hill-shoal thin reservoirs have been completed. The follow-up study of the Dengying Formation reservoir in the Gaomo area provided guarantee, and the first evaluation and development project of the Dengying Formation in the Gaomo area deployed by the joint-stock company was completed efficiently. In order to realize the three-dimensional exploration potential of the multi-layer system of the Wushenqi paleo-uplift in the Ordos Basin, the joint interpretation of seismic and non-seismic was used to describe the mid-deep structure, and the distribution of dolomites in the Ma 4 and Ma 3 members was predicted by seismic inversion, and the paleo-uplift and its The surrounding reservoir-forming model has strengthened the demonstration of the integration of seismic and geology, and has reserved a number of targets for breakthroughs in the deep formation of the Ordovician under carbonate rocks.

In the field of foreland thrust belts, we will solve the imaging problems of sub-salt shallow structures in the western part of the Kelasu tectonic belt, vigorously develop target processing and fine interpretation techniques, and form an anisotropic reverse-time migration processing and interpretation integrated technology. “Model” effectively describes the distribution and scope of shallow conglomerate. The industrial application of reverse time migration has been promoted and applied, which further improves the imaging quality of seismic data in this area and lays a solid foundation for the trillion cubic meters of atmospheric reserves.

In the field of shale oil and gas, in order to support the rapid production of large-scale shale gas areas in southern Sichuan, innovative seismic-geological engineering integration shale gas horizontal well tracking support technology, repeated optimization of the target position of each design platform, and tailor-made multilateral wells The trajectory and implementation plan helped to set a new benchmark for the construction of shale gas development platform and the deployment of high-yield wells in southern Sichuan, which was highly recognized by oil and gas companies.

In the new areas and new areas, continued fine exploration in the high-mature exploration areas of the Bohai Bay Basin and Songliao Basin. Eastern Geophysical Exploration gave full play to the advantages of integrated processing and interpretation. The oil areas were looking for new layers, and the old areas were concerned about cold zones, and actively conceived new types of oil and gas accumulations. Oriented by well location targets, comprehensively promote the application of targeted processing technology for old data, and carry out integrated multi-round rolling processing research, which effectively improves the quality of seismic data, improves the imaging accuracy of buried hills, volcanic rocks and complex fracture zones, and improves multi-scale The accuracy of facies-controlled reservoir prediction has helped to make new progress in the exploration of lithological oil and gas reservoirs in slope areas and the rolling edge expansion of high-mature exploration areas.


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