The commercial success of a field can be determined by the smallest of margins 4D makes a significant contribution towards understanding the dynamic behavior of the reservoir and thus plays a part in maximizing the return on investment.
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Beyond the Enhanced Oil Recovery (EOR) benefits, 4D technology is now being deployed in other arenas where a full knowledge of the reservoir is key, areas such as gas storage and carbon sequestration. We have driven the development of 4D as a technology and have also been a key innovator in its application. 4D seismic has evolved from a qualitative tool to identify producing zones and bypassed oil, to become an integral part of quantitative reservoir management.ĬGGVeritas has been involved in every facet of the 4D method's evolution and this has allowed a unique understanding of the full range of its potential. The field-wide information provided by seismic is now considered key in optimizing the recovery of remaining reserves.
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The ability to monitor the behavior of a reservoir during its production lifetime now allows engineers to observe changes in the subsurface beyond the limited windows provided by wells. Since that time a succession of landmark projects have established CGGVeritas as the company of choice for 4D while highlighting the broadening range of reservoirs that can benefit from the use of 4D technology. Our experience with 4D began over 20 years ago when the industry was yet to be wholly convinced of the concept’s benefits. This understanding has very real budgetary consequences as increasing the recovery factor of a reservoir, even by a few percent, has significant revenue implications.
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The method involves the acquisition, processing and interpretation of repeated seismic surveys over a producing field with the aim of understanding the changes in the reservoir over time, particularly its behavior during production. CGGVeritas has been at the forefront of the evolution of 4D technology and has unrivalled experience in its practical application. Hydrocarbon exploration and development has seen several step-change technologies during recent decades and time-lapse, or 4D, is a seismic method whose value is now recognised worldwide. 09B-SV-02-V1_4D_Brochure.qxd:09B-SV-2-V1_4D_BrochureĤD Time-Lapse Seismic INTRODUCTION With maturing basins and ever deeper and more complex frontiers, the importance of extending the life of and maximizing recovery from producing fields has never been greater.