Oyedokun O.,Texas A&M University |
Samuel R.,Landmark Graphics |
Schubert J.,Texas A&M University
Society of Petroleum Engineers - SPE Western Regional Meeting | Year: 2016
Attempts have been made in the past to use uphole motor in extending the reach of coiled tubing in directional wellbores, but these efforts were not successful because of poor design. We have designed a workable configuration suitable for coiled-tubing and conventional drillpipe operations. In addition, we have developed a procedure for selecting the required uphole motor size, rotating tubular dimensions, and circulation rate based on surface pump and tubular-buckling constraints. The configuration of the drillstring is highly sensitive to the flow and drilling parameters. And the rotating length function was derived using soft-string torque and drag model. The motor winding ratio and flow rate were made the independent variables of the rotating length and surface pump pressure functions. Based on available surface pump pressure, flow coefficient, and turbulence flow index constraints, the optimum uphole motor configuration and flow rate were determined. From the numerical tests conducted, it is evident that the tecnhlogy is viable and cheap. The technique can significantly increase the reach of tubular in the lateral sections of the wellbore. Furthermore, combining the uphole motor with the articulated tractor system, greater reach is achievable. Copyright 2016, Society of Petroleum Engineers.
Barnes A.,805 Shea Center Drive |
Cole M.,Landmark Graphics |
Michaels T.,Landmark Graphics |
Norlund P.,Landmark Graphics |
Sembroski C.,Landmark Graphics
First Break | Year: 2011
Seismic reflection data foster geological intuition when they resemble geology. With a simple workflow based on modern seismic attributes and tools for interpretive processing and display, it is straightforward to display seismic data to look more like geology. This workflow combines structural and stratigraphic attributes through volume blending with illumination. Illumination imparts a 3D texture to the display, enhancing structural elements in the data. Two important structural attributes are relative amplitude change and seismic shaded relief; they look illuminated naturally. Shaded relief is especially useful as it makes time slices look like apparent topography and vertical sections look like canyon walls, thereby revealing faults, anticlines, diapirs, channels, and other features. © 2011 EAGE.
Xu Z.,Landmark Graphics |
Chambers R.,Landmark Graphics
73rd European Association of Geoscientists and Engineers Conference and Exhibition 2011: Unconventional Resources and the Role of Technology. Incorporating SPE EUROPEC 2011 | Year: 2011
A novel approach in the creation of faulted structural surfaces using the kriging algorithm and "smart" pseudo well control is presented. In our method, pseudo well control locations are generated automatically and then depth information is passed to these locations from real well control during the interpolation process. This method is an enhancement to the local unfaulting approach introduced recently.
Lin J.C.,Landmark Graphics |
Yarus J.M.,Landmark Graphics
SEG Technical Program Expanded Abstracts | Year: 2011
Well logs are one of the major data-types in Oil & Gas exploration and production E&P. They measure various geophysical and electrical properties near the borehole environment. In a 2D or 3D visualization environment, well logs are displayed as curves which are expensive from a performance and memory point of view. In this paper, we present a parallel algorithm for generating well log curves with GPU programming known as a shader. Combined with massive parallelization of a 3D graphics hardware, this new approach could achieve 12 times of speed up with 1/12 memory from traditional graphics geometric approach. This new approach has proven to reduce the computation time to generate 3D graphics by two-thirds. Furthermore, this new approach provides smoother and more continuous curves than traditional presentations using straight lines and planar polygons. © 2011 Society of Exploration Geophysicists.