... 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...

... 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...

... 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...

... 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...

... 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...

... 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...

... permeability production control reservoir characterization porosity core flood data production monitoring acidizing enhanced recovery well intervention production enhancement squeeze program intervención de pozos petroleros reservoir surveillance completion installation and operations downhole...

... equation wellbore emulsifier corrosion inhibitor acid surfactant reservoir agent asphaltene onset pressure equation intervención de pozos petroleros flow assurance formation damage production control well performance completion installation and operations flow in porous media enhanced...

... Well Productivity Improvement Exhibition pipe reservoir production enhancement production monitoring acidizing society of petroleum engineers production control downhole intervention workover operation wellbore design intervención de pozos petroleros case study well intervention...

... 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...

... 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...

... 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...

... 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...

... 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...

... 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...

... 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...

... 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...

... 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...

... Abstract During acidizing treatments in carbonate reservoirs, a degradable diversion system (DDS) is commonly applied to achieve a more uniform distribution of acid along the wellbore. The effectiveness of a DDS strongly depends on the permeability of the filter cake, which is formed...

... Abstract Matrix acidizing is a popular technique in Oil and gas industry to enhance the well productivity. For a successful acidizing job, dissolution behavior of formation rock with injected acid needs to be fully understood. At Reservoir conditions, dissolution rates of carbonate rocks...