Abstract: The invention relates to the use of quaternary polyamines having formula (I) for the recovery of oil from reservoirs formula (I), wherein n>=1 R1 represents H, CH3, CH2CH3, CnH2n+1 R2 represents H2CHOHCH2, CH2, CH2CH?CH2 R3 represents CH3, CH2CH3, CnH2n+1 R4 represents CH2, CH2CH?CH2 when R2 and R4 are allyl group, they can jointly form aliphatic cyclic structures, the ratio between the carbon atoms and nitrogen atoms (C/N) ranges from 2 to 30.

Abstract: A process in which the paraffinic effluent derived from a Fischer-Tropsch synthesis unit is separated to obtain a heavy C5+ fraction, said heavy fraction then being hydrogenated in the presence of a hydrogenation catalyst at a temperature in the range 80° C to 200° C, at a total pressure in the range 0.5 to 6 MPa, at an hourly space velocity in the range 1 to 10 h-1, and at a hydrogen flow rate corresponding to a hydrogen/hydrocarbons volume ratio in the range 5 to 80 NI/I/h, the liquid hydrogenated effluent then being brought into contact with a hydroisomerization/hydrocracking catalyst, with no prior separation step, the hydroisomerized/hydrocracked effluent then being distilled to obtain middle distillates and possibly oil bases.

Abstract: A piloting method of a laser system of an absolute gravimetric measurement device by atomic interferometry particularly suitable for on-site applications and advantageously usable in the geophysical field, including: generating cooling, entrapment, manipulation, thrust, and detection bands of a plurality of atoms; cooling the plurality of atoms; entrapping the plurality of cooled atoms in a three-dimensional magneto-optical trap; releasing the plurality of atoms in free fall in an ultra-vacuum system; performing an interferometric sequence; performing a detection; wherein the releasing includes quenching the three-dimensional magneto-optical trap through the contemporaneous extinction of the bands for producing a three-dimensional magneto-optical trap and a trap magnetic field.

Abstract: Process for the purification of an aqueous stream coming from the Fischer-Tropsch reaction which comprises feeding said aqueous stream to one or more pervaporation units obtaining an aqueous stream enriched in oxygenated organic compounds (retentate side) and an aqueous stream enriched in water (permeate side), feeding said aqueous stream enriched in oxygenated organic compounds to a saturator obtaining a gaseous stream leaving the saturator, feeding said gaseous stream to a synthesis gas production plant. Said process allows at least a part of the aqueous stream coming from the Fischer-Tropsch reaction to be used as process water in a synthesis gas production plant, subsequently sent to a Fischer-Tropsch plant for the production of hydrocarbons.

Abstract: The invention relates to a process for the preparation of mixtures containing bitumen and thermoplastic polymer at a high concentration, stable during storage, with particular characteristics of easy processability and movability which, once diluted, allow modified bitumens to be obtained with high performance characteristics. In particular, the process allows mixtures containing bitumen, thermoplastic polymer and wax, to be prepared, wherein the polymer is in a quantity varying from 5 to 30% by weight with respect to the weight of the mixture consisting of bitumen and polymer, and the wax is in a quantity varying from 4.7 to 16.7% by weight with respect to the weight of the total mixture, and comprises reacting a concentrated mixture (A), stable during storage, containing bitumen and from 5 to 30% by weight of thermoplastic polymer, with a hydrocarbon wax containing at least 40 carbon atoms and having a melting point of at least 700 C.

Abstract: A water-based fluid, containing: a non-ionic surfactant, which is stable in a temperature range from 10 to 90° C. and soluble in water; and a salt, wherein the non-ionic surfactant contains an alkyl polyglucoside selected from the group consisting of a C8 alkyl polyglucoside, a C10 alkyl polyglucoside, and mixtures thereof, and the salt is present, and is present in an amount up to 60%. In addition, a process for preventing the formation of a W/O inverse emulsion or resolving a W/O inverse emulsion that has already formed in an oil well in which an oil-based mud has been employed by injecting the water-based fluid into the oil well.

Abstract: The present invention relates to a method for reducing the coning in an oil well of an underground reservoir delimited by an aquifer which comprises an injection phase of a micro(nano)-structured fluid with controlled release of barrier substances in said aquifer with the formation of an impermeable barrier located at the oil/water interface, characterized in that said fluid comprises an aqueous dispersion of microcapsules composed of a core comprising a modifying substance of the absolute permeability of the rock formation which contains said reservoir, a protective shell insoluble in water which coats said core. The present invention also relates to the above mentioned microcapsules and an aqueous dispersion comprising the above mentioned microcapsules to be used in said method.

Abstract: The present invention relates to an alternating or statistical conjugated copolymer comprising: at least one benzotriazole unit B having general formula (Ia) or (Ib): wherein the group R is selected from alkyl, aryl, acyl or thioacyl groups, possibly substituted; at least one conjugated structural unit A, wherein each unit B is connected with at least one unit A in any of the positions 4, 5, 6 or 7, preferably in positions 4 or 7.

Abstract: A process is described for the production of middle distillates from a paraffinic feedstock wherein the feedstock is subjected to hydrocracking and/or hydro-isomerization in the presence of a hydrocracking/hydro-isomerization catalyst. The catalyst comprises at least one hydro-dehydrogenating metal selected from metals of groups VIB and VIII, and a substrate that comprises at least one dealuminified Y zeolite. The dealuminified Y zeolite is modified by a basic treatment stage wherein the dealuminified Y zeolite is mixed with a basic aqueous solution, and at least one heat treatment stage.

Abstract: The present invention relates to an upstream-downstream integrated process for the upgrading of a heavy crude oil with the capture of CO2, comprising the following operative steps: a) production of a heavy crude oil from a reservoir; b) distillation of said heavy crude oil, at atmospheric pressure or under vacuum, with the separation of a distilled fraction and a hydrocarbon residue containing asphaltenes; c) solvent deasphalting of said hydrocarbon residue containing asphaltenes with the formation of a precipitate of asphaltenes and a deasphalted oil (DAO); d1) oxy-combustion of said precipitate of asphaltenes in pure oxygen with the formation of a stream of exhausted gases comprising CO2 and water vapour; d2) as an alternative to said oxy-combustion, gasification of said precipitate of asphaltenes in pure oxygen with the formation of a stream of syngas which is subsequently transformed into a gas stream comprising CO2 and H2; e) separation of a substantially pure gaseous stream of CO2 from said stream of ex

Abstract: Polyalkenyl succinimides which can be obtained with a process which comprises: a. reacting a reactive medium-high molecular weight polyalkene with maleic anhydride at a temperature higher than 180° C.; b. carrying out the reaction thermally for a time sufficient for having a conversion of the terminal vinylidene groups higher than 10%; c. completing the thermal reaction in the presence of a reaction accelerator consisting of a Lewis acid; d. reacting the reaction product of step (c) with an amine which has at least one primary aminic group capable of forming an imide group.

Abstract: The present invention relates to an apparatus and method for measuring the flow-rate of different fluids present in a plurality of distinct multiphase streams (C), in transit, each through a respective main flow pipe (2). The apparatus (1) comprises a measuring unit (3) for each pipe (2). Each measuring unit (3) comprises a sampling device (4). Each measuring unit (3) comprises first and second measuring means (5) of the differential pressure type situated downstream of the respective sampling device (4). The apparatus (1) comprises a phase separator (8) associated with the measuring unit (3). The apparatus (1) comprises selection means (18) interposed between the measuring unit (3) and the separator (8) for putting the latter in communication with one of the sampling devices (4) envisaged.

Abstract: An apparatus and a method for measuring the gravitational acceleration on the ground, for example adapted to geophysical explorations applied to mining, including a base frame, a resonator having a first disc of sapphire integral to the base frame, and a second disc of sapphire arranged at a minimum distance from the first mass and aligned vertically with respect to the first mass such that the first and the second disc form a resonator for electromagnetic signals; a cantilever arm connected to the base frame and holding resiliently the second disc in order to provide a steady elastic modulus; a magnetic probe for applying an electromagnetic signal to the resonator arranged according to a plane existing between the two discs; a linear electric probe, arranged under the fixed disc aligned vertically with respect to its side edge, for measuring a resonance frequency of the resonator responsive to the electromagnetic signal, device for correlating the variation of the resonance frequency to a variation of distan

Abstract: A detection system of geological formations, particularly but not exclusively used for oil exploration, and for characterization and monitoring of hydrocarbon reservoirs. The detection system includes an electromagnetic transmission device positioned on a surface of a geological formation close to a first well having a vertical development direction, the first well being covered by a metal casing, and an electromagnetic reception device positioned deep inside the first well, the electromagnetic reception device including an electromagnetic detector. The electromagnetic transmission device includes a primary electromagnetic field generator configured to generate a primary electromagnetic field focalized in a direction of the metal casing, the metal casing irradiating the primary electromagnetic field into the geological formation.

Abstract: A centralizer for an oil well drill casing including at least one strip of ceramic or plastic material applied onto an outer wall of the casing.

Abstract: A method for determining a position of a fluid discharge in an underwater environment, the method including: collecting data relating to an underwater area through at least two acoustic sensors; filtering and processing the data collected to identify the presence of the discharged fluid and the underwater area involved; forming a single stereoscopic image by combining the plurality of single three-dimensional images; and estimating the position of the fluid discharge on the basis of the stereoscopic image thus obtained.

Abstract: Integrated process for the production of bio-oil from sludge coming from a wastewater purification plant comprising the following steps: (a) sending wastewater to said purification plant obtaining sludge; (b) subjecting the sludge obtained in said step (a) to liquefaction, obtaining a mixture Including an oily phase consisting of bio-oil, a solid phase and an aqueous phase; (c) sending the aqueous phase obtained in said step (b) to said purification plant. The bio-oil (or “bio-crude”) thus obtained can be advantageously used in the production of bio-fuels which can be used as such, or in a mixture with other automotive fuels. Otherwise, said bio-oil (or “bio-crude”) can be used as such (bio-fuel), or in a mixture with fossil fuels (combustible oil, coal, etc.), for the generation of electric energy or heat.

Abstract: An absolute gravimetric measurement device including, in succession, a laser system, a supporting surface of the laser system, an ultra-vacuum system, a retroreflective mirror, and a seismic attenuation system. The seismic attenuation system includes an upper plate including a hole above which the retroreflective mirror is kept suspended by at least three metallic blades including first ends constrained to a periphery of the plate and second ends above the hole in correspondence with the retroreflective mirror, the metallic blades configured to form a spring-antispring geometry for damping vibrations of the retroreflective mirror. The absolute gravimetric measurement device also includes a mechanism leveling the retroreflective mirror integral with the seismic attenuation system and a radial constraining mechanism between the retroreflective mirror and the upper plate.

Abstract: The present invention concerns a mixture of inorganic nitrate salts, comprising LiNO3, NaNO3, KNO3 and CsNO3 wherein the LiNO3 content ranges from 17.5% by weight to 21.6% by weight, the NaNO3 content ranges from 10% by weight to 11% by weight, the KNO3 content ranges from 27.7% by weight to 32.6% by weight, the CsNO3 content ranges from 35.8% by weight to 43.8% by weight, including the interval bounds.

Abstract: Apparatus for improving the safety and recovery of wells to be installed in oil wells comprising a Deep Set Well Head (DSWH), a Casing Receptacle (1), a Deep Set Tubing Hanger (DSTH) (2), Sub-Surface Safety Valves (SSSVs) (12) (13) with one or two independent Control Lines and Connection elements between the DSTH and well head.