Long, X. (Shell International Exploration and Production, Inc) | Roggeband, S. M. (Shell Global Solutions International B.V.) | Pasaribu, H. (Shell Global Solutions International B.V.) | Jabs, M. (Shell EP-Americas) | Klever, F. J. (BetaTech Consulting NL)
Solid Expandable Technology (SET) is helping the industry to reach more challenging wells. The objective of this study is to comprehensively investigate the effects of the expansion process on the pipe mechanical properties and collapse performance, and to develop a risk based design collapse strength for the expandables with a desired reliability level.
Full size expanded and unexpanded pipes with various
It was found that the expanded tubulars generally have 10-30% lower collapse performance than unexpanded tubulars depending on the pipe
Ongoing improvements in computational capability and seismic acquisition have made imaging using multi-component elastic waves feasible. Multicomponent seismic data can provide additional subsurface information, such as fracture distributions and elastic properties (MacLeod et al., 1999; Mehta et al., 2009; Sen, 2009). For elastic reverse-time migration, the constructed vector wavefields allow for a variety of imaging conditions (Yan and Sava, 2008; Denli and Huang, 2008; Artman et al., 2009; Wu et al., 2010). One widely used imaging condition is crosscorrelation of separated wave modes from the source and receiver wavefields, which yields PP, PS, SP, and SS images. However, because PS and SP reflectivities change signs at certain incidence angles, the computed PS and SP images change polarities at the corresponding angles. Duan and Sava (2014) propose an imaging condition for elastic reverse-time migration, generating PS and SP scalar images with consistent polarity information for all experiments. This imaging condition requires additional information, i.e. the reflector normal field. Here, we investigate two practical problems associated with this imaging condition, including the estimation of the reflector normals when the reflectors are imaged at incorrect positions, and the imaging of a reflector by waves arriving from opposite sides.
Elshahawi, Hani (Shell International Exploration and Production, Inc) | Mullins, Oliver C. (Schlumberger Oilfield Service) | Hows, Melton (Shell International Exploration and Production, Inc) | Colacelli, Santiago (Schlumberger Oilfield Service) | Flannery, Matthew (Shell International Exploration and Production, Inc) | Zuo, Julian (BR Technology Center) | Dong, Chengli (Schlumberger Oilfield Service)