... severe in projects that use the injection of reactive fluids into the reservoir, as is the case with carbon dioxide-water alternating gas (CO 2 -WAG) injection. To avoid such an occurrence, scale inhibitors are used, which are continuously dosed at various points in the production flow, from subsea...

... flow measurement tool was introduced in Ecuador to reformulate the stimulation workflow in water injectors, which comprised evaluation and treatment. This new technology enabled an integrated, single-run workflow instead—initial injectivity measurements, diagnostics, treatment, post-stimulation...

... pore volume (PV) of NS-based fluid system at 200°F. During NS-based fluid system injection through the core, differential pressure was increased to only 10 psi showing better injectivity than viscous polymeric gel. The SEM images showed the presence of glass-like material filling the porosity, which...

... are simply PW reuse and recycling within oil and gas industries to reduce the amount disposed of while increasing production and consequently lowering the cost of water treatment. Among all these methods are enhanced oil recovery (EOR), waterflooding (WF), water injection (WI), and hydraulic fracturing (HF...

... flowback surfactant anionic hpam friction reducer synthetic brine paper chemical flooding methods concentration surf 4 surf 1 conference injection europe government united states government Hydraulic fracturing with slickwater fluid systems continues to be a dominant well stimulation...

...-permeability oil zones. The chemical can also withstand downhole harsh conditions such as salinity of around 170,000 ppm and presence of 2% H 2 S. The treatment consisted of bullhead injection of 300 bbl of pregelled chemical through-tubing. The first results seem very favorable, since for two wells, the water...

... to improve production and store CO 2 underground. The fracturing design consisted of the injection of a supercritical CO 2 prepad (with a target injected volume of 5,000 tons per well) followed by a traditional slickwater or hybrid proppant slurry. The CO 2 was captured from point-source plants that would...

...Zhiwei Ma; Luis Coimbra; Juliana Y. Leung Summary The steam alternating solvent (SAS) process involves multiple cycles of steam and solvent (e.g., propane) injected into a horizontal well pair to produce heavy oil. These solvent-based methods entail a smaller environmental footprint with reduced...

... permeability impairment after the OMA injection. Furthermore, results of the batch reactor tests with formic acid indicated low precipitation risks, whereas those with OMA suggested higher precipitation risks. Detailed analysis on the thin sections and residuals of the batch reactor tests with OMA highlighted...

...Alan Beteta; Oscar Vazquez; Mandhr Al Kalbani; Faith Eze Summary This study aims to demonstrate the changes to scale inhibitor squeeze lifetimes in a polymer flooded reservoir vs. a waterflooded reservoir. A squeeze campaign was designed for the base waterflood system, then injection was switched...

...Santiago Hassig Fonseca; Dayana Serrano; Cristina Villacres; David Flor; Luis Marchan; Luciano Bravo; Alexander Pineda; Eduardo Muslera; Diego Estevez; Geovanny Ramos; Edgar Chicango; Marcelo Cattani; German Morillo; Luis Alabuela; Edgar Correa; Carola Freire Summary Customers in Ecuador inject...

... interval oil field water shutoff oil saturation log analysis conformance improvement well intervention casing and cementing mechanism application production monitoring produced water management and control completion installation and operations symposium injection reduction may 2022...

... reservoir was selected based on some technical and operational criteria. A feasibility study was conducted to evaluate the potential risks of condensate injection into the reservoir. The results of tests on asphaltene precipitation, as the most important risk, indicated no severe precipitation would occur...

...Daniel O'Reilly; Manouchehr Haghighi; Matthew Flett; Mohammad Sayyafzadeh Summary Presented here is an analytical framework to assess the impact of transient‐temperature changes in the wellbore on the pressure‐transient response of cold‐water injection wells. We focus attention on both drawdown...

... (MICP) performed in a failed waterflood injection well in Indiana. In 2012, fracture-related flow pathways developed in the wellbore cement, causing injection water to bypass the oil-bearing formation and enter a high-permeability sandstone thief zone, thereby substantially decreasing injection pressure...

.... The two‐scale continuum model is a fundamental model that has been successfully used for this end. Previous studies with this model only simulated single‐phase flow: injection of acid into a water‐saturated rock. However, significantly different behavior is observed experimentally by injecting acid...

... tubing (CT) and distributed‐temperature sensing (DTS) were combined to overcome challenging conditions (high temperature, low injectivity, high deviation, long perforated intervals, and wellbore damage) to identify damaged oil zones and suspected water‐bearing zones in an onshore well in Japan...

... and was extensively investigated during recent decades. Injection of highly viscous gel increases the pressure in a fracture, which promotes gel dehydration by fluid leakoff into the adjacent matrix. The present comprehension of gel behavior dictates that the rate of fluid leakoff will be controlled by the gel...

... wettability of the oil‐wet core could shift to more water‐wet after PPG injection. To summarize this research, we present the determination and analyses of the network parameters as a novel technique for predicting the performance of hydrogels in porous media, and for investigating their strength under harsh...

...Maria-Magdalena Chiotoroiu; Torsten Clemens; Markus Zechner; Jongsoo Hwang; Mukul M. Sharma; Marco Thiele Summary Waterflooding can lead to substantial incremental oil production. Implementation of water‐injection projects requires the project to fit into the risk (defined here as negative outcomes...