A5037802602- Enhanced Oil Recovery Techniques
- Hydraulic Fracturing and Reservoir Analysis
- Surfactants and Colloidal Systems
- Rheology and Fluid Dynamics Studies
- Petroleum Processing and Analysis
- Drilling and Well Engineering
- Oil and Gas Production Techniques
- Methane Hydrates and Related Phenomena
- Medication Adherence and Compliance
- Public Health in Brazil
- Hydrocarbon exploration and reservoir analysis
- Eicosanoids and Hypertension Pharmacology
- Cancer, Hypoxia, and Metabolism
- Spectroscopy and Quantum Chemical Studies
- Lipid Membrane Structure and Behavior
- Atmospheric and Environmental Gas Dynamics
Universidade Estadual de Campinas (UNICAMP)
2008-2022
Hospital de Clínicas da Unicamp
2022
Pontifical Catholic University of Rio de Janeiro
2019-2020
Polymers with high molecular weight and worm-like micelles are drag-reducing agents under turbulent flow. However, in contrast to the polymeric systems, do not undergo mechanical degradation due turbulence, because their macromolecular structure can be spontaneously restored. This very favorable property, together drag-reduction capability, offer possibility use such heating cooling systems recirculate water while expending less energy. The formation, growth, stability of formed by...
Although wormlike micelles (WLM) were first described more than 30 years ago, many aspects of their formation process are still unclear. Herein, a systematic experimental investigation the for micelle in mixtures tetradecyltrimethylammonium bromide (C14TAB) and salicylate (2-hydroxybenzoate) was carried out. This system used as model to investigate conditions giant aggregate. For comparison, other two isomers (3- 4-hydroxybenzoate) also investigated, once these cases not formed. The studies...
When diluted solutions of giant micelles are under turbulent flow, large attenuations the turbulence can be observed due to action on dissipative vortices formed within flow. This particular property is rapidly lost when solution heated breakup micelles. Based this property, we present a thermal-flow study mixed micelle by combination two surfactants and sodium salicylate. One surfactants, cetyltrimethylammonium bromide (C16TAB) was kept fixed, others were dodecyltrimethylammonium (C12TAB),...
Abstract This study describes the effects of wormlike micelles formed by commercial surfactants tallowalkylamidopropyl dimethylamine oxide (Aromox APA‐TW) and oleyl methyl bis(2‐hydroxyethyl) ammonium chloride (Ethoquad O/12) as drag reducers. Ethoquad O/12 is immune to degradation heat microorganisms. Conversely, Aromox APA‐TW biodegradable in environment, its susceptibility heat‐induced was previously assessed. work considers temperature, salt, time on drag‐reduction capacity (in different...
Abstract The hydraulic fracturing technique is based on pumping a given fluid at high pressure greater than the rupture of reservoir rock, which causes creation permeability channels inside rock. This process also makes contained in formation flow preferentially through newly cracked channels. After stabilizing rock formation, may settle fracture or even infiltrate into formation. next step, known as flowback, consists removing all so well can start producing. Under certain conditions,...
Abstract The completion of long horizontal intervals is a challenge faced by Petrobras since the discovery heavy oil offshore fields in 80's. gravel-pack well know technique applied successfully hundreds wells Brazilian coast. Besides, operational limits are frequently very tight, once water depth has been increased, as desired open hole length. Due to these facts, pressure gradient close pore and setting most critical step. gravel transportation fluid requires flow rate that can result...
Hydrates are crystalline structures formed by water and substances with low molar mass molecules. Hydrate formation can occur during oil production when oil, gas flow through the same lines in conditions of high pressure temperatures. The deposition hydrate crystals severely jeopardize safety operations, being one biggest issues industry. present work describes a study carried out on cyclopentane hydrates. Cyclopentane forms - at atmospheric type II-structure hydrates, which similar to those...
Aim: To evaluate the properties of measurement Global Evaluation Medication Adherence Instrument (GEMA) among patients with chronic diseases. Methods: A methodological study was conducted in public hospital state São Paulo, Brazil. The adherence to anticoagulants as well International Normalized Ratio (INR) assessed on 127 patients. Besides GEMA, two other instruments were used assess adherence: Morisky Scale–8 (MMAS-8) and Measurement Adhesion Treatments (MAT). Results: GEMA presented a...