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Keywords: shale
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Proceedings Papers

Paper presented at the SPE Unconventional Resources Conference, April 1–3, 2014
Paper Number: SPE-168971-MS
... Table 1 Petrophysical properties of the Haynesville samples saturated with brine and oil Shale Formation sample ID Total Porosity (%) TOC (Wt %) Quartz and Feldspars (Wt%) Total Clays (Wt%) Total Carbonates (Wt%) Haynesville H-1 10.8 3.4 24 47 28 H-2 4.5 0.6 3 8...
Proceedings Papers

Paper presented at the SPE Unconventional Resources Conference, April 1–3, 2014
Paper Number: SPE-169009-MS
...Abstract Abstract The geomechanical properties of an unconventional reservoir or shale, especially the minimum in-situ stress and fracture gradients, are important for several applications such as mud weight optimization and completion design. Two common methods of direct stress testing...
Proceedings Papers

Paper presented at the SPE Unconventional Resources Conference, April 1–3, 2014
Paper Number: SPE-169015-MS
... Analysis, which gives a much lower production permeability and a reduced size of the SRV (stimulated reservoir volume). Data from five wells in the Fayetteville shale have been analyzed using new software. Two perm-based diagnostics (injection and production perm) have been correlated to various fracture...
Proceedings Papers

Paper presented at the SPE Unconventional Resources Conference, April 1–3, 2014
Paper Number: SPE-169016-MS
...Abstract Abstract In conventional petroleum systems, predicting gas-oil ratio and charge volumes ahead of drilling is a proven element of exploration strategy. In shale plays the liquid-gas cut-off must be known precisely, and production from the liquid-prone zone optimised. In-place does...
Proceedings Papers

Paper presented at the SPE Unconventional Resources Conference-USA, April 10–12, 2013
Paper Number: SPE-164540-MS
... Fig. 3a-c show BSE images for the three samples from well A. Fractures can be seen within the organic matter that stop abruptly the boundary between the organic matter and the inorganic matrix. It can be seen for the most part that the typical round pores observed in gas shales are absent...
Proceedings Papers

Paper presented at the SPE Unconventional Resources Conference-USA, April 10–12, 2013
Paper Number: SPE-164554-MS
... The NMR longitudinal relaxation time ( T 1 ) is the time constant associated with the alignment of hydrogen nuclei during a NMR measurement sequence. Ozen (2011) observed high T 1 / T 2 ratios of organic shale cuttings saturated in oil, and low T 1 / T 2 ratio of organic shale cuttings...
Proceedings Papers

Paper presented at the SPE Americas Unconventional Resources Conference, June 5–7, 2012
Paper Number: SPE-154673-MS
...Abstract Abstract Shale-gas plays and other unconventional resources have gained significant importance worldwide. Historically, synthetic based drilling fluids (SBM) are used in these plays when no environmental concerns are in place and are preferred when wellbore stability is necessary...
Proceedings Papers

Paper presented at the North American Unconventional Gas Conference and Exhibition, June 14–16, 2011
Paper Number: SPE-144267-MS
...Abstract Abstract The present study combines palynological applications with advanced microscopic techniques to characterize the Utica, Haynesville and Fayetteville shale-gas source rocks. This unprecedented approach could offer an alternative way to measure the total organic carbon (TOC...
Proceedings Papers

Paper presented at the North American Unconventional Gas Conference and Exhibition, June 14–16, 2011
Paper Number: SPE-144391-MS
...Abstract Abstract Shale reservoirs represent a significant and increasing portion of natural gas production within North America. In order to better understand gas deliverability of these reservoirs, the flow paths and their connectivity within shales need to be understood at a fundamental...
Proceedings Papers

Paper presented at the SPE Unconventional Gas Conference, February 23–25, 2010
Paper Number: SPE-131771-MS
...Abstract Abstract To understand the deliverability of gas shales, one needs to understand the controls on porosity and permeability. The microstructure of shale is defined in part by the grain size which is typically less than 5 μm and composition. Gas shales unlike other lithologies contain...
Proceedings Papers

Paper presented at the SPE Unconventional Gas Conference, February 23–25, 2010
Paper Number: SPE-131772-MS
...Abstract Abstract Using FIB/SEM imaging technology, a series of 2-D and 3-D submicro-scale investigations are performed on the types of porous constituents inherent to gas shale. A finely-dispersed porous organic (kerogen) material is observed imbedded within an inorganic matrix. The latter may...
Proceedings Papers

Paper presented at the SPE Unconventional Gas Conference, February 23–25, 2010
Paper Number: SPE-131768-MS
...Abstract Abstract We present a practical assessment of petrophysical properties of shales and their measurement in the lab and via logs. Gasbearing shale present unique measurement challenges due to their ultra-low permeability and complicated pore volume connectivity. The combination of low...
Proceedings Papers

Paper presented at the SPE Unconventional Gas Conference, February 23–25, 2010
Paper Number: SPE-131782-MS
... proppant diagenesis tests using coated and uncoated proppants, with and without shale reservoir rock present in the test cell, and in the presence of fluids of varying composition. Test philosophy and methods are described. Test results are documented using electron micrographs as well as chemical analysis...
Proceedings Papers

Paper presented at the SPE Unconventional Gas Conference, February 23–25, 2010
Paper Number: SPE-132370-MS
...Abstract Abstract In shales, intrinsic porosity is considered a direct outcome of those processes that are active during deposition and early compaction of a shale succession. They are typically in the micrometer to nanometer size range, and unrelated to processes that produce fragmentation...
Proceedings Papers

Paper presented at the CIPC/SPE Gas Technology Symposium 2008 Joint Conference, June 16–19, 2008
Paper Number: SPE-114902-MS
...Conclusions Examples of fracture detection using 3D seismic data in unconventional gas plays have been shown for a coalbeds, gas shale and tight gas sand. All three used VVAZ to properly condition the seismic data prior to AVAZ, which is used to indicate the fractures. The use of seismic...
Proceedings Papers

Paper presented at the SPE Unconventional Reservoirs Conference, February 10–12, 2008
Paper Number: SPE-114164-MS
... be more reactive to natural fluids within the pores and may be altered (sometimes significantly) by adverse chemical reactions. The matrix — the second common component in a sediment — refers to the finer materials deposited between the larger grains and typically includes both clays and shales. Clays...
Proceedings Papers

Paper presented at the SPE Unconventional Reservoirs Conference, February 10–12, 2008
Paper Number: SPE-114173-MS
... As typical of most technology plays, the development of reservoirs such as the Barnett shale and lenticular tight gas sands has benefited tremendously from hydraulic fracture mapping results 4 – 10 that provide definitive information regarding the created hydraulic fracture. It is worthwhile...
Proceedings Papers

Paper presented at the SPE Gas Technology Symposium, March 15–18, 1998
Paper Number: SPE-39989-MS
... Abstract This paper focuses on an important problem of gas storage projects; the mixing of the cushion gas and the storage gas. Due to mixing, the reproduced gas may not meet customer specifications or valuable gas becomes unrecoverable. In this work we address the effect of shales...
Proceedings Papers

Paper presented at the SPE Gas Technology Symposium, April 28–May 1, 1996
Paper Number: SPE-35589-MS
... Abstract Accurate estimation of the initial gas in-place for high-pressure gas reservoirs is quite often difficult because of the effect of formation compressibility and the uncertain presence of water influx from small, associated aquifer or adjacent shales. This paper presents a material...
Proceedings Papers

Paper presented at the SPE Gas Technology Symposium, April 28–May 1, 1996
Paper Number: SPE-35634-MS
... Abstract A detailed investigation of borehole instability in the Foothills region of Northeastern British Columbia, Canada is described. Costly problems due to hole collapse have been experienced during the drilling of deviated wells through dipping, fissile shales in the region. An integrated...

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