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Keywords: injection rate
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Proceedings Papers

Paper presented at the SPE International Conference and Exhibition on Formation Damage Control, February 19–21, 2020
Paper Number: SPE-199284-MS
.... This is important when long laterals or interval characteristics limit injection rates away from the optimum, causing inefficient use of stimulation fluid. HCl acid, although readily accessible and widely used, can be highly problematic for far-field placement and stimulation. The addition of a low...
Proceedings Papers

Paper presented at the SPE International Conference and Exhibition on Formation Damage Control, February 19–21, 2020
Paper Number: SPE-199249-MS
... low-pressure-bearing plug, the injecting pressure was held constant to enable further establishment of the plug through filtration. The effects of LCM soaking time, soaking pressure, and injection rate on plug breaking pressure and total fluid loss volume were investigated. Full factorial experimental...
Proceedings Papers

Paper presented at the SPE International Conference and Exhibition on Formation Damage Control, February 19–21, 2020
Paper Number: SPE-199236-MS
... operational conditions (injection rate, type of fluid, amount of pad, etc) that lead to the best possible acid fracture that can be created with a given amount of acid. The productivity of the matrix acidized wells is estimated using the most recent wormhole propagation models upscaled to field conditions...
Proceedings Papers

Paper presented at the SPE International Conference and Exhibition on Formation Damage Control, February 19–21, 2020
Paper Number: SPE-199262-MS
... scale matrix Flow Condition Injection Rate face dissolution stokes-brinkman equation conductive channel fluid dynamics dispersion diffusion coefficient carbonate rock wormhole dissolution pattern porous media dissolution reservoir characterization equation Matrix acidizing is a...
Proceedings Papers

Paper presented at the SPE International Conference and Exhibition on Formation Damage Control, February 19–21, 2020
Paper Number: SPE-199290-MS
... approach has delivered inconsistent results in wells completed across tight carbonate rock, most often leading to a rapid decline in injection rates following the treatment. An alternative workflow was implemented to take full advantage of real-time downhole measurements and the presence of fiber optics...
Proceedings Papers

Paper presented at the SPE International Conference and Exhibition on Formation Damage Control, February 19–21, 2020
Paper Number: SPE-199306-MS
.... Zeta potential measurements were performed to determine alterations in rock wettability. A formation response test (FRT) apparatus was used to run different coreflood tests using different combinations of injection rates and temperatures. These tests were accompanied with analytical results from ICP...
Proceedings Papers

Paper presented at the SPE International Conference and Exhibition on Formation Damage Control, February 19–21, 2020
Paper Number: SPE-199272-MS
... pressure differential and injection rate (MAPDIR) was the initial stimulation process used to treat these wells. 1 Later, this process was continued with the addition of chemical, in-situ viscosifying diverter stages to improve acid placement. Pre-drilled liner completions have been the primary method...
Proceedings Papers

Paper presented at the SPE International Conference and Exhibition on Formation Damage Control, February 7–9, 2018
Paper Number: SPE-189540-MS
... Figure 2 The phases of an acid fracturing treatment Injection rate has a large influence on the morphology of the conductive channels formed during carbonate stimulation ( Fredd 1998 ). Very low injection rates will cause the acid to barely penetrate the formation matrix, only...
Proceedings Papers

Paper presented at the SPE International Conference and Exhibition on Formation Damage Control, February 7–9, 2018
Paper Number: SPE-189546-MS
... highly dependent on acid injection rate, velocity of the jet, temperature, and permeability of the formation. The differences between the matrix dissolution mechanism of acid jetting and that of conventional matrix acidizing are most obvious at low acid injection rates. Experiments were performed with...
Proceedings Papers

Paper presented at the SPE International Conference and Exhibition on Formation Damage Control, February 7–9, 2018
Paper Number: SPE-189496-MS
... Glasbergen 2011 ). At injection rates equal and higher than optimum rate, acid is forced into smaller pores which leads to more branching and higher volume of acid consumed. Theoretical model shows that the optimal injection rate depends on the reservoir condition, rock mineralogy and properties, pore size...
Proceedings Papers

Paper presented at the SPE International Conference and Exhibition on Formation Damage Control, February 7–9, 2018
Paper Number: SPE-189567-MS
... determine the pore volume to breakthrough (PVBT) and time to breakthrough (TBT) at the various selected injection rate. Characterization and morphology studies of wormhole were done using micro CT imaging. Initial selection of stimulation fluids for matrix acidizing was based on the mineralogical...
Proceedings Papers

Paper presented at the SPE International Conference and Exhibition on Formation Damage Control, February 24–26, 2016
Paper Number: SPE-178961-MS
... Abstract Optimal acid injection rate is critical information for carbonate matrix acidizing design. This rate is currently obtained through fitting acidizing coreflood experimental results. A model is needed to predict optimal acid injection rates for various reservoir conditions. A wormhole...
Proceedings Papers

Paper presented at the SPE International Conference and Exhibition on Formation Damage Control, February 24–26, 2016
Paper Number: SPE-178962-MS
... injection rates create wormholes with different lengths. The injection rate that creates the deepest wormhole is called the optimal acid injection rate. Optimal injection rate is determined in laboratory experiments by measuring the pore volumes to breakthrough – the volume of acid injected in a core flood...
Proceedings Papers

Paper presented at the SPE International Conference and Exhibition on Formation Damage Control, February 24–26, 2016
Paper Number: SPE-178951-MS
... role the condensate-gas ratio (CGR) plays in the condensate banking and how to best position a well in a low-, medium-, and high-CGR fluid. For the mitigation phase, different cyclic parameters such as injection rate, injection pressure, and soaking time for the cyclic CO 2 injection were considered...
Proceedings Papers

Paper presented at the SPE International Conference and Exhibition on Formation Damage Control, February 24–26, 2016
Paper Number: SPE-178982-MS
... detailed investigation of the channel pattern as a function of treatment design (injection rate (1 to 120 bpm), and pulse stage time (5 seconds to 5 minutes), viscosity ratio (2 to 200)), and fracture geometry (width and height). Finally, horizontal proppant covering efficiency was calculated. Numerical...
Proceedings Papers

Paper presented at the SPE International Conference and Exhibition on Formation Damage Control, February 24–26, 2016
Paper Number: SPE-178967-MS
... acid system acidizing concentration stimulation core analysis Upstream Oil & Gas composition conventional emulsified acid emulsified acid experiment Injection Rate emulsion viscosity acid core sample complex reservoir breakthrough permeability flow rate coreflood experiment...
Proceedings Papers

Paper presented at the SPE International Conference and Exhibition on Formation Damage Control, February 24–26, 2016
Paper Number: SPE-179032-MS
... different completion systems to achieve more sustainable injection treatments. flow in porous media sand control Reservoir Characterization Drillstem Testing enhanced recovery waterflooding drillstem/well testing Simulation diffusivity equation Injection Rate wellbore permeability Upstream...
Proceedings Papers

Paper presented at the SPE International Conference and Exhibition on Formation Damage Control, February 24–26, 2016
Paper Number: SPE-179017-MS
... wormhole correlation buijse 1d-averaged model leak-off velocity profile numerical model carbonate reservoir simulation result wormhole length Injection Rate Acidizing is commonly applied in carbonate formations to recover or increase the permeability in the near- wellbore region. A key...
Proceedings Papers

Paper presented at the SPE International Symposium and Exhibition on Formation Damage Control, February 26–28, 2014
Paper Number: SPE-168136-MS
... termination of UBD due to borehole complications related to hole cleaning against water. To reduce the drilling cost associated with the formation water influx, NODAL analysis was conducted to determine the optimum combination of nitrogen and water injection rates. This allowed for better control of bottom...
Proceedings Papers

Paper presented at the SPE International Symposium and Exhibition on Formation Damage Control, February 26–28, 2014
Paper Number: SPE-168146-MS
... diameter core length carbonate reservoir core dimension dominant wormhole Injection Rate Upstream Oil & Gas wormhole efficiency relationship optimum condition wormhole acidizing experimental result core diameter pv bt-opt exp 1 fit 1 interstitial velocity spe 168146 coreflood...

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