... Abstract A simple huff ‘n’ puff (HnP) injection and flowback utilizing a nonionic surfactant solution to drive enhanced oil recovery (EOR) in a depleted Eagle Ford "black oil" unconventional well has been executed and analyzed. The pilot injection was performed in December 2020, with pressures...

... designs, same geological landing zone, located within 1 mile from each other were selected to be re-stimulated with different surfactant blends. These wells were producing an average of 4,500 bwpd at a 96% water cut. Acid stimulation programs with a total treatment volume of about 2,000 barrels...

... Abstract Surfactant packages have been known to enhance the post-treatment clean-up of stimulation treatments from hydraulic fracturing. When used this way the surfactant packages are known as flowback aids. These additives reduce the completion fluid loss from the fracture surface...

... be negatively affected and cannot be solely attributed to stolen reserves from the child well. Numerous damage mechanisms are identified with the two most dominant mechanisms being capillary phase trapping and fracture conductivity damage from FR-iron gels. Multiple surfactant-nanoparticles chemistry...

... Abstract In 2020, a depleted horizontal well in the black oil window of Eagle Ford shale was stimulated with a surfactant huff-n-puff treatment selected through laboratory screening on reservoir rock and fluid samples. After 17 hours of injection and one month of shut-in, the well increased...

... Abstract Surfactant-based EOR has gained prominence, especially in recent years for improving recovery from unconventional reservoirs. Recent studies have indicated that surfactants increase production through a wettability alteration mechanism. In addition, surfactant driven IFT reduction...

... Abstract Surfactants are among the most common additives utilized in the oil industry. One focus of industry investigations in unconventional liquid-rich reservoirs is surfactant-mediated wettability alteration to enhance hydrocarbon recovery. Previous experimental studies and published field...

... and surfactants as a stimulation fluid additive on two existing wells from the Permian Chevron unconventional asset. Computer-based modeling is used to predict pre-test and calibrate post-test well performance, addressing key physical mechanisms potentially impacting the recovery. Lastly, field test execution...

... Abstract Spontaneous imbibition experiments have been used in several recent studies to evaluate the performance of surfactants for unconventional reservoir systems. The temperature of these imbibition trials, conducted in glass Amott cells, is limited by the boiling point of water at low...

... Abstract Completion fluids contain chemicals such as surfactant, friction reducer, clay stabilizer, scale inhibitor and biocides that are pumped downhole during hydraulic fracturing operation to enable oil recovery from shale reservoirs. These chemicals carry a significant cost themselves...

... produced gas with water and surfactant. The pilot was designed, permitted, and conducted by Liberty in partnership with the Energy & Environmental Research Center (EERC) and EOR ETC. The objectives were to 1) repressure the reservoir above the minimum miscibility pressure (MMP), 2) prove the concept...

... reducers (FR). These polymers are effective in reducing drag in fresh water, but their performance decreases in water containing high amounts of salinity. Previous work has shown that surfactants can improve the performance of emulsion based FRs in high salinity water. This work details the completion...

...URTeC: 5139 Fracturing Fluid Loss in Unconventional Reservoirs: Evaluating the Impact of Osmotic Pressure and Surfactant and Methods to Upscale Results Bin Pan*1, Christopher R. Clarkson2, Adnan Younis2, Chengyao Song2, Chris Debuhr2, Amin Ghanizadeh2, and Viola I. Birss3, 1. Department of Chemical...

...URTeC: 5233 CO2-Soluble Surfactants for Enhanced Oil Recovery from Shale Lauren C. Burrows*1,3, Foad Haeri1,2, Deepak Tapriyal1,2, Peter Lemaire4, Parth G. Shah4, Adel Alenzi5, Robert M. Enick4, Dustin M. Crandall1, Angela Goodman1, 1. National Energy Technology Laboratory, 2. Leidos Research...

...URTeC: 5176 Investigating Effects of Adding Surfactant to Cement Spacer on Mud Removal Performance and Cement Bond with Formation - An Experimental Study Ahmed GH Mansour*1, Talal Gamadi1, Hossein Emadibaladehi1, Otman Algadi2, Sarkis Kakadjian2, 1. Texas Tech University, 2. NexTier Oilfield...

... completion fluid chemistry upstream oil & gas pore system plug oil permeability injection permeability complex reservoir shale reservoir imbibition surfactant gas mixture completion fluid URTeC: 3158 Impact of Completions Fluids Chemistry on Hydrocarbon Effective Permeability of Organic...

... reservoir fluid and rock surface are also simulated. The Langmuir isothermal equation is applied to calculate the salinity on surfactant adsorption; the Pseudo Dilation Model is applied to simulate formation expansion and compression, and the Barton-Brandis Model is applied to describe the closure...

... Abstract Replacing oil from small pores of tight oil-wet rocks relies on altering the rock wettability with the injected fracturing fluid. Among different types of wettability-alteration surfactants, the liquid nanofluid has less adsorption loss during transport in the porous media, and can...

... Abstract The objective of this work is to determine if the efficacy of CO 2 -based enhanced oil recovery (EOR) techniques for unconventional liquid reservoirs (ULRs) can be enhanced by adding a dilute concentration of a non-ionic wettability-altering surfactant to the CO 2 . Addition of ionic...

... contacting with crude oil for hundreds of years, especially for carbonate minerals. Wettability testing is much important so that people can understand the potential imbibition ability for the reservoir. Besides, people could evaluate the wettability alteration after using chemical additive, like surfactant...