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Jin S.,Halliburton Landmark Software and Services | Xu S.,Halliburton Landmark Software and Services
Leading Edge (Tulsa, OK) | Year: 2010

Seismic visibility analysis quantitatively estimates the reflection strength for shots and receivers from a target event. The overall visibility strength illustrates whether the target event is visible or invisible to surface seismic imaging. Such knowledge is applied to target-oriented imaging and optimizing acquisition parameters to receive sufficient reflections from the target. The numerical examples provide the following insights: Visibility analysis provides quantitative information about the data that need to be migrated for a target event. It can dramatically shorten the processing cycle for iterative imaging and model building. In addition, it provides useful insights into the study of poorly imaged targets (such as subsalt areas), the possibility of reducing noise from exNovember 2010 The Leading Edge 1377 Reverse t i m e m igrat ion traneous data, and superior rendering of amplitudes using targeted processing of the input data set. Visibility analysis helps in optimizing acquisition parameters, such as long-offset and azimuth coverage for WAZ and other acquisition geometries. It is also helpful to determine the amount of data that needs to be licensed if just focusing on a prospect area © 2010 Society of Exploration Geophysicists.


Mckay B.,Halliburton Landmark Software and Services | Phillips T.,Halliburton Landmark Software and Services
Hart's E and P | Year: 2011

Some important considerations operators should consider to take control of their real-time systems and implement a single solution across their organization, are discussed. The real-time system must be able to support the entire enterprise. It must have the ability to aggregate and preserve all real-time data that is collected from each provider and present the data in a relevant and actionable format for the engineer. The system must support a variety of data collection standards and formats used by service providers, such as WISTML, WITS, LIS, LAS, OPC, and various forms of ASCII. Real-time data need to be coupled with a digital dashboard to display relevant and actionable data to improve decision-making. The system should display a wide variety of views depending on the workflow and allow users to move seamlessly within a particular well or across multiple wells. To be considered an enterprise-wide solution, a real-time system should be available independent from any wellsite services a provider offers.


Jin S.,Halliburton Landmark Software and Services | Heuermann P.,Halliburton Landmark Software and Services
1st EAGE/ACGGP Latin American Geophysics Workshop | Year: 2012

Rugged surface topography for land seismic data presents a challenge in imaging near-surface and subsurface complex geologic structures in foothills. Conventional static correction process that simply shifts the data to a flat or floating datum distorts the wavefield and thus produces the inaccurate image. Migration from topography without static correction is apparently an ideal solution to the imaging of complex structures with a rugged topographic surface. The image result obtained from the migration directly from topography is significantly improved for near-surface and subsurface structures on a synthetic over-thrust dataset in the foothills of Canadian Rockies. A hybrid reverse-time migration also produces clearer image for near-surface structures around the topographic surface than the conventional reverse-time migration.


Almendinger O.A.,Rosneft | Mituykov A.V.,Rosneft | Popov M.M.,Halliburton Landmark Software and Services
Saint Petersburg 2012 - Geosciences: Making the Most of the Earth's Resources | Year: 2012

Recent advances in deep water drilling technology have opened new domains for hydrocarbon exploration. And now they have became one of the main targets for drilling. Nevertheless because of the high costs when operating offshore in deep water, requires an integrated approach. This study is an example of detailed approach taken to the characterization and interpretation of deepwater fans of Tuapse Trough in Black Sea. Use of variety of 3D standart seismic attributes, spectral decomposition and RGB blending has considerably advanced the geological model of fan complexes.


Menyoli E.,Marathon Oil | Jin S.,Halliburton Landmark Software and Services | Xu S.,Halliburton Landmark Software and Services | Graber S.,Marathon Oil
Geophysics | Year: 2011

Marine wide-azimuth data in the Gulf of Mexico, reverse time migration (RTM) and anisotropic velocity models have led to significant improvement in subsalt imaging. However, imaging of some steeply dipping subsalt targets such as three-way closures against salt is still difficult. This can be attributed to poor illumination and noise contaminations from various shot records. We apply the visibility analysis method that quantitatively determines which shot records contribute most energy on a specific subsalt prospect area. As a result we selectively migrate only those shot records thereby reducing noise contamination from low energy contributing shot records, improving signal continuity and better trap definition in the target area. Like conventional illumination analysis, the computation takes into account the overburden velocity distribution, acquisition geometry, target reflectivity and dip angle. We used 2D and 3D synthetic data examples to test the concepts and applicability of the method. A Gulf of Mexico case study example using wide-azimuth data demonstrated its use in an industry scale project. It is shown that for the particular 60°-65° subsalt target of interest only 30% of the wide-azimuth shot records are sufficient for the imaging. By reducing noise, the image results show significant improvement in the subsalt area compared to the full shot record RTM volume. © 2011 Society of Exploration Geophysicists.

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