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Keywords: acidizing
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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-199248-MS
... Abstract The development of well completion strategy at the subject field has evolved from simple vertical completions to extended horizontal wells with selective openhole completions (Etuhoko et al. 2014). Normally, well completions in this field involve large volume acidizing treatments...
Proceedings Papers

Paper presented at the SPE International Conference and Exhibition on Formation Damage Control, February 19–21, 2020
Paper Number: SPE-199284-MS
... Abstract Placement of highly reactive stimulation fluid based on hydrochloric acid (HCl) into high temperature reservoirs or long pay intervals can be challenging and requires proper techniques to limit near-wellbore (NWB) spending, deconsolidation, and to extend the depth of fluid penetration...
Proceedings Papers

Paper presented at the SPE International Conference and Exhibition on Formation Damage Control, February 19–21, 2020
Paper Number: SPE-199236-MS
... Abstract Most wells in carbonate reservoirs are stimulated. Due to low cost and simpler operations, acid stimulation methods are usually preferred if they are sufficient. Matrix acidizing can effectively stimulate carbonate reservoirs, often resulting in skin factors on the order of -3 to -4...
Proceedings Papers

Paper presented at the SPE International Conference and Exhibition on Formation Damage Control, February 19–21, 2020
Paper Number: SPE-199275-MS
... different reservoir porosity intervención de pozos petroleros reservoir characterization reservoir surveillance enhanced recovery production control core flood data production monitoring acidizing well intervention downhole intervention 18-month scale squeeze program scale squeeze design...
Proceedings Papers

Paper presented at the SPE International Conference and Exhibition on Formation Damage Control, February 19–21, 2020
Paper Number: SPE-199262-MS
... Abstract Matrix acidizing of carbonate formations has been widely used as a practical stimulation technique to improve well performance near the wellbore. The principle of a matrix acidizing treatment is to create wormholes by the dissolution of carbonate rocks. The dissolution pattern can...
Proceedings Papers

Paper presented at the SPE International Conference and Exhibition on Formation Damage Control, February 19–21, 2020
Paper Number: SPE-199321-MS
... study. The project objective is to increase the efficiency of matrix stimulation by introducing advanced techniques for automized well selection and calculating the design of acidizing based on mathematical modeling. Reservoir Characterization oilfield Effectiveness oil production Upstream Oil...
Proceedings Papers

Paper presented at the SPE International Conference and Exhibition on Formation Damage Control, February 19–21, 2020
Paper Number: SPE-199290-MS
... Abstract In onshore Middle East, local practices for matrix stimulation of openhole horizontal carbonate water injectors consist of spotting hydrochloric acid treatment via coiled tubing (CT) along the uncased section using a specific fluid dosage per unit length of the pay zone. Thus far, that...
Proceedings Papers

Paper presented at the SPE International Conference and Exhibition on Formation Damage Control, February 19–21, 2020
Paper Number: SPE-199238-MS
... Abstract Objectives/Scope: The paper is a case study of the impact of acidizing in a carbonate formation. The paper shares the operator’s observations and the approach taken to investigate the matter. The operator’s success in improving the acidizing approach is also discussed in detail. The...
Proceedings Papers

Paper presented at the SPE International Conference and Exhibition on Formation Damage Control, February 19–21, 2020
Paper Number: SPE-199291-MS
... Abstract Hydrochloric acid (HCl) is the acid of choice for acidizing operations in most carbonate formations and is the base acid commonly paired with others such as hydrofluoric (HF) in most sandstone applications. However, high dissolving power, high corrosion rate, lack of penetration, and...
Proceedings Papers

Paper presented at the SPE International Conference and Exhibition on Formation Damage Control, February 19–21, 2020
Paper Number: SPE-199306-MS
... Abstract Organic acids are commonly used to replace hydrochloric acid (HCl) in high reservoir temperature applications, as they are less corrosive and weaker than HCl. However, organic acids have shown some problems due to acid reaction product solubility. One such organic acid, lactic acid...
Proceedings Papers

Paper presented at the SPE International Conference and Exhibition on Formation Damage Control, February 19–21, 2020
Paper Number: SPE-199270-MS
... reservoir surveillance rjd reservoir production enhancement production monitoring acidizing During the recent decades, short-radius horizontal drilling has been increasingly used in order to exploit reservoirs, especially in thin depleted reservoirs ( Lu et al., 2015 ; Jain et al., 2017...
Proceedings Papers

Paper presented at the SPE International Conference and Exhibition on Formation Damage Control, February 19–21, 2020
Paper Number: SPE-199258-MS
... Abstract Hydrochloric (HCl) crosslinked gelled acid systems have been extensively used in acid fracturing and matrix acidizing to help achieve acid diversion during stimulation treatments. These systems also help control fluids leakoff and help retard the acid reaction to allow deeper acid...
Proceedings Papers

Paper presented at the SPE International Conference and Exhibition on Formation Damage Control, February 19–21, 2020
Paper Number: SPE-199329-MS
... Abstract Success rates of carbonate acidizing, when upscaling from single, aqueous-phase laboratory analyses to field scale levels have been poor. Analyzing matrix acidizing performances in carbonate reservoirs with two-phase environments. i.e., oil and water, has picked up importance currently...
Proceedings Papers

Paper presented at the SPE International Conference and Exhibition on Formation Damage Control, February 19–21, 2020
Paper Number: SPE-199272-MS
... Abstract The Danish North Sea Halfdan Field is developed with extremely long horizontal wells in a line drive producer/injector pattern. The carbonate reservoir requires successful acid stimulation to maximize the flow potential of the wells. High rate, matrix acidizing, relying on maximum...
Proceedings Papers

Paper presented at the SPE International Conference and Exhibition on Formation Damage Control, February 19–21, 2020
Paper Number: SPE-199332-MS
... Mauddud reservoir were normally drilled vertically and stimulated in a conventional way using matrix acid treatment, which proved a good hydrocarbon potential, but with low productivity. A study was conducted in one the lower cretaceous reservoir (Mauddud) which recommended the option of drilling a...
Proceedings Papers

Paper presented at the SPE International Conference and Exhibition on Formation Damage Control, February 19–21, 2020
Paper Number: SPE-199244-MS
... Abstract The foremost purpose of carbonate matrix acid stimulation is to improve near wellbore flow conductivity, induce the desired conduits, and bypass the formation damage. Hydrochloric acid (HCl) is the most predominantly used treatment fluid to treat carbonate formations, enhance...
Proceedings Papers

Paper presented at the SPE International Conference and Exhibition on Formation Damage Control, February 19–21, 2020
Paper Number: SPE-199264-MS
... inhibitor acid surfactant reservoir asphaltene inhibition july 2018 diffusivity equation asphaltene onset pressure equation production control flow assurance intervención de pozos petroleros enhanced recovery formation damage well performance reservoir surveillance flow in porous media...
Proceedings Papers

Paper presented at the SPE International Conference and Exhibition on Formation Damage Control, February 19–21, 2020
Paper Number: SPE-199253-MS
... Abstract Candidate screening for matrix acidizing has gained attention in recent years due to the importance in driving towards acidizing success rate and efficiency improvement. This paper presents a comprehensive workflow featuring a simple step-by-step method utilizing mainly production and...
Proceedings Papers

Paper presented at the SPE International Conference and Exhibition on Formation Damage Control, February 7–9, 2018
Paper Number: SPE-189473-MS
... radius, and k h /k v is the anisotropy of the formation. A complex empirical correlation was generated to calculate S c2 , and details can be found in Cohen et al., 2010 . The skin model for diverters described in Cohen et al., 2010 was combined with an acid placement model ( Tardy, 2007 ; Tan...
Proceedings Papers

Paper presented at the SPE International Conference and Exhibition on Formation Damage Control, February 7–9, 2018
Paper Number: SPE-189486-MS
... reservoir and injection properties, such as the models presented by Furui et al. (2012a) and Buijse and Glasbergen (2005) . It is well accepted that the most important factor in a carbonate matrix acidizing is achieving the deepest possible penetration of the wormholes, with good treatment coverage...

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