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Li, Junlun (Shell International Exploration & Production Inc) | Kuehl, Henning (Shell International Exploration & Production Inc) | Droujinine, Alexander (Shell Global Solutions International) | Blokland, Jan-Willem (Shell Global Solutions International)
We present a new method to locate and invert for the source mechanisms of microseismic in hydraulic fracturing and small magnitude induced seismicity in conventional reservoirs using a robust full waveform method. This method only requires rough picks on the observed and synthetic data for initial bulk alignment. Then we utilize a new method named Fast Alignment and Matching Algorithm (FAMA) to 1) remove residual misalignment between synthetic and observed traces using an optimized cross-correlation strategy and 2) produce reference double-couple solutions as constraints for the subsequent inversion. With aligned data and source constraints produced from FAMA, a full moment tensor solution can be obtained. Our method is fast and robust, requiring only a few parameters.
Presentation Date: Tuesday, October 18, 2016
Start Time: 8:00:00 AM
Presentation Type: ORAL
Lopez, J. L. (Shell International Exploration & Production Inc) | Przybysz-Jarnut, J. K. (Shell Global Solutions International B.V.) | Hornman, J. C. (Shell Global Solutions International B.V.) | Mateeva, A. (Shell Global Solutions International B.V.) | Zwaan, M. (Shell Global Solutions International B.V.) | Potters, H. (Shell Global Solutions International B.V.)
With the recognized cost and complexity of IOR and EOR projects onshore, there is a significant risk of projects not meeting their NPV or production targets, unless cost-effective well and reservoir management plans are in place to mitigate such risks. Time-lapse seismic could provide important and timely information to diagnose and remediate areal conformance issues, if the time-lapse data is of high enough quality and low enough cost to be acquired on a frequent basis. We review the business case, expected value, and affordability of seismic monitoring in IOR/EOR projects and the new technologies that may be used for this purpose. We illustrate these ideas with a case study from the Peace River heavy oil field in Canada, as it is implemented today to monitor steam injection in a relatively shallow reservoir and how it could be implemented in the future to reduce cost and preserve value by judicious adjustment of the frequency of seismic monitoring. We also comment on the challenges and technology options for monitoring of deeper reservoirs.
Van Den Haak, Arno L.M. (Shell International Exploration & Production Inc) | Cameron, Wylie J (Shell Exploration & Production Co.) | Grant, Lisa S (Shell Exploration & Production Co.) | Japar, Nor Janiah H (Shell Exploration & Production Co) | Reagins, Deandre R (Shell Exploration & Production Co.)
The Mars B Development announced Final Investment Decision (FID) in 2010 and represents one the first major new development to be executed during a period of evolving technical and regulatory requirement. Shell’s move towards FID demonstrated our commitment to the Gulf of Mexico. The project aims to unlock these resources over the next 50 years thru the deployment of a new floating TLP Deepwater structure?the Olympus TLP a 24 well platform and six subsea wells.
Unique challenges pertaining to the well design extend beyond the regulatory environment and include numerous technical challenges from the development of the 24 slot TLP wells targeting over 50 horizons in a 10.000’ vertical sequence to approx 22,000 ft TVD, to designing and delivering six West Boreas/South Deimos 15K subsea wells..
The well trajectories cover a range from low angle, high angle, extended reach and complex through salt penetrations. Multiple design challenges are present and must be managed to ensure well integrity, reservoir isolation, and desired well construction objectives; all requiring successful development and deployment of novel technologies and world class systems to achieve top quartile. Design requirements have resulted in an evolution of traditional well designs. This has resulted in the use of unique casing sizes, larger casing wall thicknesses, tighter clearances and the reduction of traditional contingency options. The new requirements increase the already complex well construction.
The presentation will provide a high level overview of the well and project challenges as well as details of a few of the specific challenges. Some of the challenges to be discussed are the development of novel tieback systems and solutions, zonal isolation strategy, integration and automation of new surface rig equipment, development of an innovative drilling riser concept, advanced casing and liner construction techniques, and equipment to accommodate the 50 year design life. The design life is the longest design life of a tension leg platform in Shell’s history.
The development and deployment of these new technologies will not only have benefits for the Mars B Development, but has already identified potential benefits for brown-field environments and the next generation of Gulf of Mexico projects.
Marchebois, Herve (Vallourec Research Center Corrosion Department) | Dulcy, Nicolas (Vallourec Research Center Corrosion Department) | Cernocky, E. Paul (Shell International Exploration & Production Inc) | Desadier, Chris (Vallourec and Mannesmann TCA) | Urband, Bruce (Vallourec and Mannesmann TCA) | Legay, Frédéric (Vallourec and Mannesmann Oil & Gas)
Zhang, (Ian) Zhiyi (Shell International Exploration & Production Inc) | Gonguet, Christophe (Shell Petroleum Development Oman) | Rajani, Vinit (Shell International Exploration & Production Inc) | Roeterdink, Roeland (Shell Petroleum Development Oman)