Petrobras | Date: 2016-09-19
This invention relates to a method of correcting eccentricity of ultrasonic image profiles, measured along a section of rock, including the steps of measuring emitted amplitude values (A_(0)) and measuring transit time values (t_()) of ultrasonic acoustic pulses emitted at a range of default angles (), where the amplitude measured at each angle (A_()) is determined by an amplitude decay model in relation to the transit time (t_()) defined by A _()=A_()e^(t)^(/)I_(), where is the decay correction factor; and I_() is the reflection coefficient of the rock wall.
Brazilian National Institute of Technology and Petrobras | Date: 2014-01-07
Current industrial processes for the production of lactic acid are fermentative, using lactic bacteria which require large volumes and create large quantities of liquid residue which need to be treated. Chemical literature also describes the use of reaction systems with homogeneous catalysis, which also pose problems which in turn impact our costs, owing to the increased requirements in terms of the control of the process and the type of reactor necessary. Therefore, the process used thus far, carried out in hydrogenolysis, isomerisation and oxidation are defective, owing to the significant formation of sub-products, mainly pyruvic acid and acetic acid and the low yield of lactic acid. Lactic acid can also be obtained by the chemical transformation of other sources other than starch, but which are also renewable. The present invention provides a oxidative process for the production of lactic acid, in which the reaction with pure oxygen or oxygen mixed with air takes place below 100 C. and under autogenous pressure, using a noble metal catalyst in a metal oxide. The process uses 1,2-propanediol as primary material, derived from the reaction of hydrogenolysis of the glycerine, and reaches yields of more than 70% of lactic acid and less than 30% in sub-products, pyruvic acid and acetol.
Petrobras, King Fahd University of Petroleum, Minerals and Saudi Aramco | Date: 2016-03-28
The invention relates to a four-component catalyst and a seven-component catalyst and refractory supports for use in the thermoneutral reforming of petroleum-based liquid hydrocarbon fuels.
Process For Obtaining Nanocomposites, Nanocomposite, Method Of Capture And Retrieval Of A Solubilized And/Or Disperesed Material In Organic Or Inorganic Medium, Method Of Purification Of An Organic Or Inorganic Medium And Capture And Retrieval Kit For A Solubilized And/Or Dispersed Material In Organic Or Inorganic Medium
University of Sao Paulo and Petrobras | Date: 2015-06-11
The present invention lies in the fields of chemistry and nanotechnology and describes a nanocomposite to be used in the recovery of several compounds from inorganic or organic medium. Specifically, the invention presents a nanocomposite consisting of magnetic nanoparticles composed of Fe_(3)O_(4 )associated to an activated charcoal adsorbent substrate, a process to obtain and methods of use of the nanocomposite. The present invention enables the processing, concentration and recovery of large volumes of contaminated water, regenerating magnetic adsorbent material for reuse, in a cyclic and sustainable manner, transforming dispersed/diluted pollutants in pre-concentrates that can be easily processed, helping to conserve natural resources.
Petrobras | Date: 2015-01-27
The present invention refers to a method to repair flexible flow lines used in the petroleum industry. This method provides a means for quick and permanent repairs of birdcage-type failures (BC) in flexible ducts while they are in operation, without interrupting production flows. The technology proposed, because of its simple characteristics, eliminates the need for replacing the affected section and for allocating special vessels to perform the repair.
Petrobras | Date: 2015-12-17
The present invention is related to production schedules in a refinery and, more particularly, refinery production schedules by genetic programming in domain specific language. In this scenario, the present invention provides a method and an optimization system based on linear genetic programming oriented to grammar and with quantic inspiration using a domain specific language for the solution of oil programming problems, in addition to a readable medium comprising instructions to perform this said method. More specifically, the quantic chromosome keeps the superposition of states of all possible solutions and, through the evolutionary process and observation of quantic genes, the classical chromosome is created as a linear sequence of instructions to be performed. The performed instructions represent the scheduling. The orientation of this process is made through the use of a multiple-goal competence function that ranks evaluations about the operation time of the distillation units, the time for unloading ships, the use of the pipeline that moves oil between the terminal and the refinery, as well as factors such as the number of tanks exchanges and use of injection tanks in the distillation units.
Petrobras | Date: 2015-09-22
The present invention is a system for the extraction and quantification of tetraprotic naphthenic acids present in oils, precursors of the formation of calcium naphthenates, which are potential formers of deposits, causing of damage to pieces of equipment used in the oil production industry.
Petrobras | Date: 2014-01-31
A composition of a packer fluid including biodiesel glycerin which can be used in deep and ultra-deep wells in environments containing CO_(2 )and a process of using the same. This fluid may have a specific mass of at least 1.15 g/cm^(3), adequate viscosity for pumping at less than 2,000 cP and corrosive potential of up to 3 mm in 30 years. In addition, the packer fluid is compatible with the elastomers normally employed and does not degrade when exposed to temperatures lower than 100 C. The packer fluid is injected into an oil well as part of a well packer process.
Petrobras | Date: 2014-01-17
This certificate of addition pertains to alternative constructive methods submitted for the components of the seal, resulting in increased efficiency and durability of the device, as well as the ease of assembly thereof. Compact restrictive seal (1) derived from these constructive alternatives can be applied indiscriminately to equipment lubricated by grease, fluid oil or oil mist.
Petrobras | Date: 2015-01-07
Additives for mixing into the base catalyst inventory of the fluid catalytic cracking (FCC) process units, so as to achieve a high selectivity of light olefins (ethylene and propylene), are described. Such additives comprise an FER zeolite and an MFI zeolite, the MFI zeolite preferably being zeolite ZSM-5. The mixture of the additive in a concentration greater than 2% w/w relative to the base catalyst of an FCC unit allows greater selectivity for light olefins, propylene and ethylene, while maintaining catalytic activity.