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Keywords: concentration
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Proceedings Papers

Paper presented at the SPE Canada Unconventional Resources Conference, September 28–October 2, 2020
Paper Number: SPE-200013-MS
... were analyzed for their pH, total dissolved solids (TDS) content, particle size of the colloidal system, and zeta potential of the colloidal systems. For single-component mineral-water systems, it has been observed that pH and TDS in general give a linear relation with the mineral concentration. For...
Proceedings Papers

Paper presented at the SPE Canada Unconventional Resources Conference, September 28–October 2, 2020
Paper Number: SPE-200002-MS
... used during the fracturing operation, a synthetic brine was made, using the chemistry of the reservoir brine with total dissolved solid (TDS) of 130,000 ppm. Table 1 lists the concentration of ions used in the synthetic brine. To perform the bulk-phase tests at different salinities, synthetic brine...
Proceedings Papers

Paper presented at the SPE Canada Unconventional Resources Conference, September 28–October 2, 2020
Paper Number: SPE-200004-MS
... 10 PV KCl solution with a concentration of 2% was injected. Then about 10 PV conventional fracturing fluid/SPFF/PCFF/CFF, was injected. Finally, about 10 PV KCl solution with a concentration of 2% was injected. The permeability of the whole experimental stage was calculated by flow rate and pressure...
Proceedings Papers

Paper presented at the SPE Canada Unconventional Resources Conference, September 28–October 2, 2020
Paper Number: SPE-199984-MS
... per stage in the absence of production logging. This framework involves collecting all available data: geological, geophysical, raw data-van feeds, pressure signatures, frac fluid viscosity profiles, break times, production and tracer concentrations to build a model for targeting sleeve closures...
Proceedings Papers

Paper presented at the SPE Canada Unconventional Resources Conference, March 13–14, 2018
Paper Number: SPE-189800-MS
... concentration Wolfcamp sample recovery factor mechanical strength interaction dissolution complex reservoir porosity montney sample stress hysteresis regain permeability permeability co 2 carbonate duvernay sample Currently, large water based hydraulic fracturing treatments have become...
Proceedings Papers

Paper presented at the SPE Canada Unconventional Resources Conference, March 13–14, 2018
Paper Number: SPE-189780-MS
... increase in TOC and clay concentration ( Figure 4 ). Understanding the wettability of a formation is critical in selecting fracturing treatment fluids and the ability to model the occurrence of water blockage at the fracture face. Figure 4 Wettability Index of Oil for both Upper and Lower Montney...
Proceedings Papers

Paper presented at the SPE Unconventional Resources Conference, February 15–16, 2017
Paper Number: SPE-185047-MS
... Upstream Oil & Gas enhanced recovery Asphaltene Precipitation contact angle visual cell cyclic co 2 injection oil-saturated core plug concentration experiment asphaltene content interface PVT cell psig interaction co 2 precipitate core plug Oil Recovery Abstract...
Proceedings Papers

Paper presented at the SPE Unconventional Resources Conference, February 15–16, 2017
Paper Number: SPE-185071-MS
... proppant areal concentration distribution after fracturing. The simulated proppant areal concentration distribution is subsequently converted to the fracture conductivity distribution by using the modeled conductivity results from Step 1. The conductivity distribution is input into a well-built reservoir...
Proceedings Papers

Paper presented at the SPE Unconventional Resources Conference, February 15–16, 2017
Paper Number: SPE-185078-MS
... Abstract As observed in many shale-gas plays, the produced flowback water is highly saline and the salt concentration increases with time. Several past studies investigated water-rock interactions to interpret flowback chemical data, evaluate reservoir performance, and investigate the...
Proceedings Papers

Paper presented at the SPE/CSUR Unconventional Resources Conference, October 20–22, 2015
Paper Number: SPE-175926-MS
... the rock and fluid and do not consider the source of ions (e.g. cation exchange in clay and chemical reactions between fluid and rock). Here, C i and Z i are the molar concentration and valence of ion " i ", respectively. I is used to calculate the Debye length, κ −1 , the characteristic...
Proceedings Papers

Paper presented at the SPE/CSUR Unconventional Resources Conference, October 20–22, 2015
Paper Number: SPE-175948-MS
... machine learning proppant cumulative production co 2 hydraulic fracturing fracturing fluid concentration well performance fracture fluid system proppant tonnage completion cost foam completion completion technology binary foam permeability Upstream Oil & Gas slickwater reservoir...
Proceedings Papers

Paper presented at the SPE/CSUR Unconventional Resources Conference, October 20–22, 2015
Paper Number: SPE-175949-MS
... concentration in produced waters. This is possible due to the usage of a highly hydrophobic stationary phase, which is not interacting with the high amount of inorganic ions present in produced waters. In extension to the initial publication the influence of organic acids on the hydration and gelation for...
Proceedings Papers

Paper presented at the SPE/CSUR Unconventional Resources Conference, October 20–22, 2015
Paper Number: SPE-175955-MS
... paraffin. Use of larger proppant sizes, higher proppant concentrations, and more aggressive proppant schedules. Optimization of fracture size and spacing. Because this has been the basis of much of the success in the Viking formation in recent years, a detailed discussion follows. fracturing...
Proceedings Papers

Paper presented at the SPE/CSUR Unconventional Resources Conference, October 20–22, 2015
Paper Number: SPE-175988-MS
... performance of the eductor will differ from water and can limit what is done with the pump. The blenders, Figs. 1 and 2 , use special solids-handling valving and pressure controls to regulate the proppant loading. The control system is capable of producing concentrations from less than 0.1 ppa to more...
Proceedings Papers

Paper presented at the SPE/CSUR Unconventional Resources Conference, October 20–22, 2015
Paper Number: SPE-175945-MS
... bacteria enumerated from job site samples are presented, along with application methodologies and program design. It was observed that chlorine dioxide combined with a low concentration of preservative biocide can provide enhanced efficacy and reduce total chemical demand compared to conventional biocide...
Proceedings Papers

Paper presented at the SPE/CSUR Unconventional Resources Conference, October 20–22, 2015
Paper Number: SPE-175972-MS
... Figure 6 (A) Evolution of proppant placement in a complex fracture network of configuration with favorable natural fracture orientations. ( B) Total proppant concentration versus time With these elementary tests it is clear that the physics of the fluid (or proppant) solid interaction...
Proceedings Papers

Paper presented at the SPE/CSUR Unconventional Resources Conference, October 20–22, 2015
Paper Number: SPE-175937-MS
... as a sessile drop test, but are indicative of general wettability. Figure 4 shows time lapse images of the experiments for low-salinity brine, PE at a concentration near the CMC, and PE at a target concentration. Note, complete imbibition occurs in the target concentration case in about a tenth of...
Proceedings Papers

Paper presented at the SPE/CSUR Unconventional Resources Conference – Canada, September 30–October 2, 2014
Paper Number: SPE-171581-MS
... hydraulically stimulated fractures for oil and gas production. Additional literature ( Gadde et al. 2004 ) discusses the effect of fracture walls, changes to settling velocities, rheology caused by changes to proppant concentration, turbulence effects attributed to high fluid velocities, and inertial effects...
Proceedings Papers

Paper presented at the SPE/CSUR Unconventional Resources Conference – Canada, September 30–October 2, 2014
Paper Number: SPE-171647-MS
... Interactions of injected water with in situ brine, precipitated salt crystals, and shale rock are the possible sources of the flowback salts. To identify the origin of these salts in the flowback water, we first analyze the field data of salinity and individual ion concentration of the flowback...
Proceedings Papers

Paper presented at the SPE/CSUR Unconventional Resources Conference – Canada, September 30–October 2, 2014
Paper Number: SPE-171661-MS
.... Static bottle tests conducted using only SIs exhibited a minimum effective concentration (MEC) of ≥ 20 to 50 ppm for complete scale control. With the addition of 0.25 gpt of FRs, the MEC increased to approximately 100 to 250 ppm for the different SIs based on ICP elemental analysis data. Additionally...

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