A5032958228- Drilling and Well Engineering
- Oil and Gas Production Techniques
- Reservoir Engineering and Simulation Methods
- Hydraulic Fracturing and Reservoir Analysis
- Innovative concrete reinforcement materials
- Concrete and Cement Materials Research
- Tunneling and Rock Mechanics
- Grouting, Rheology, and Soil Mechanics
- Materials Engineering and Processing
- Seismic Imaging and Inversion Techniques
- Geotechnical and Geomechanical Engineering
- Lignin and Wood Chemistry
- Enhanced Oil Recovery Techniques
- Marine and Offshore Engineering Studies
Petrobras (Brazil)
2011-2024
Abstract Drilling wells with TOT-3P design consists of optimizing (reducing) the steps well construction. takes place in 3 sections (3P=3 phases) and completion, sand containment screen plus production column (upper lower), is performed a single trip (TOT = True One Trip). The construction only possible deepening casing second section capacity this to have function surface production. Some challenges stand out project, such as gain inclination, cleaning stability open riserless phase,...
Abstract In the past 18 years, since first discovery, evolution of drilling technologies and techniques applied in development Petrobras’ fields Brazilian pre-salt have overcome many challenges, considering well design, performance, wellhead systems, cementing conductor installation. The improvements terms integrity, as construction time cost, led to better economical outcome from this area that produces around 80% oil operator. Pre-Salt, Petrobras has drilled over four hundred wells,...
The crystalline composition of Portland cement clinker is commonly established by Bogue's equations, which are based on a series assumptions that seldom apply to oilwell cements. This probably due the presence additional oxides and phase reconversion upon cooling from calcination temperature. Important differences therefore observed between numerical values yielded mathematical equations image analysis quantification. In this study, concentration phases in was determined using Taylor's...
Abstract After 10 years of Brazilian presalt exploration and development, the carbonate reservoirs continue to pose drilling challenges, leading unwanted bottomhole assembly (BHA) trips due severe shock vibration, low rates penetration (ROP), premature drill-bit cutting structure damage. Today, industry efforts improve performance in carbonates are driven by trial error, which is very costly ultradeepwater environment. The adoption a collaborative mindset since 2012 between service provider...
Abstract The paper introduces a method that enables the drilling of directional trajectory in shallow and unconsolidated formations riserless phases through adjustment parameters, Rotary Steerable System (RSS) settings PDC bits configurations. technique was designed for some specific scenarios: exploratory projects which maintaining verticality formations/hazards is mandatory, post-salt with significant inclination build phases, require kickoff large diameters. There has been substantial...
Portland cement is by far the most important binding material used in both civil construction and oil well cementing. However, especially latter application, its brittle nature impairs ability to withstand dimensional changes due thermal gradients (RT approximately 200°C), typical of heavy-oil recovery operations. This often results extensive cracking sheath debonding cement-casing interface, which leads loss zonal isolation, gas migration production water through annular....
Abstract The pre-salt reserves offshore from Santos basin represent a great opportunity and probably the most important recent oil discovery in Brazil. These carbonate reservoirs are currently drilled with various types of drill bits, have proven to be challenging environment. Since their discovery, there has been an incessant search for development bits that able these hard and, some cases, very abrasive formations single run optimized drilling rates. In this way, costs wells construction...
The tensile strength of Portland cement may be increased by additional reinforcement. This is usually accomplished means steel rods, fibers or particles, which are mixed to the slurry. In an attempt increasing toughness and hardened pastes, present work describes behavior composites consisting reinforced natural polymer particles for oil well cementing. main purpose study was select plastic environmentally friendly powdered materials capable filling typical porosity developed on cement....
Abstract New technologies and methodologies for estimating torque drag (T&D) response during directional horizontal drilling wells are constantly being researched in the literature. Classical methods developed 80s still used nowadays. However, their approximations involved may incur significant errors well design operations. In contrast, using numerical increase computational costs of a plan result unfeasible designs. A methodology to determine friction factor based on retro-analysis...