摘要:
A method is provided for preparing fully lattice-inserted titanium zeolites by post-synthesis processing of the synthetic zeolite optionally containing titanium with an inorganic acid, wherein the post-synthesis processing comprises processing the zeolite in the presence of at least one titanium source with a solution containing at least one oxidizing inorganic acid having a higher redox potential than an acidic tetravalent titanium solution. The invention is also directed to the use of the zeolites.
摘要:
An active composite, consisting of a compressed support and of at least one agent that is active with respect to a gas, the compressed support comprising recompressed expanded graphite having a relative density of between 0.02 and 1.5, is formed from a series of sheets superposed on top of one another. According to the invention, the active agent is dispersed between the sheets in the form of granules.
摘要:
Device for producing by chemical reaction cold and/or heat, comprising two reactors containing each an associated salt susceptible of reacting chemically with a gas and dispersed into a porous support, a housing intended to receive the gas from the reactors and a housing intended to deliver the gas to the reactors. Accordingly to the invention, the reactors are arranged in direct contact and in such a way that the heat transfer between each other takes place only by conduction. A process for implementing the chemical reactions between at least one salt and one gas within such a device to product cold and/or heat is also disclosed.
摘要:
A method of processing reflection seismic traces based on a D(tau, x2) diagram showing horizontal events (WAH-WDH). For each value of tau the corresponding signal amplitude is analyzed for the various x2 in a time window of less than a predetermined width. The amplitudes are subjected to conventional linear regression minimizing the sum of absolute values of discrepancies from the straight line, or the sum of their squares. Each concentration zone is swept by a straight line pivoting successively about each point with a slope equal to the square of the offset.
摘要:
Method of managing a solid/gas adsorption or thermochemical reaction, the site of which is a device comprising a reactor, which contains a solid capable of reacting with a gas, an evaporator/condenser assembly for the gas and means intended to reheat the solid, the method comprising the steps which consist in:bringing the evaporator/condenser assembly, when the latter is filled with liquid, into communication with the reactor so as to cool the evaporator,switching on the means intended to reheat the solid, so as to deliver the gas to the evaporator/condenser assembly.According to the invention, the step of switching on the means intended to reheat the solid starts before the previous step has finished.
摘要:
The process includes the reaction of a chloroformamidinium chloride with a polystyrene-divinylbenzene resin functionalized with primary amine groups. The resins which can be obtained according to this process may in particular have a spacer arm of general formula (IV): --CH.sub.2 --(--X--CH.sub.2 --CH.sub.2 --).sub.m -- (IV) with X representing oxygen or sulphur and m being equal to 1 or 2. This spacer arm bears at its end, on the right, a primary amine group or a guanidine group.
摘要:
The subject of the present invention is a stabilizer-reamer for drilling an oil well. The invention provides an improvement to drillpipe string stabilizers used when drilling an oil well. The purpose of the stabilizer, which forms the subject of the invention, is to allow the drillpipe string to be raised through fractured formations, in addition to its normal function of stabilizing the drillpipes. To this end, it is fitted with retractable abrasive blades which make it possible to re-drill the fractured formations when the drillpipes are being raised and to avoid jamming in the well. The main claims relate to the novel function of the stabilizer, to the geometry of its elements and to the mechanism of opening the blades.
摘要:
A method for making a 3-D cube of near traces from data acquired in a marine reflection seismic survey. A method for making a 3-D cube of near traces using at least one source (S.sub.1, S.sub.2) and a plurality of streamers (4 to 7) spaced from the source, each comprising receivers/recorders (R.sup.1.sub.4, R.sup.1.sub.5, R.sup.1.sub.6, R.sup.1.sub.7) as well as means for the space tracking of each source and each streamer, the image of the subsurface being produced in three dimensions with a system of X, Y, T axes in the form of a 3-D cube by assigning to each bin of a group of bins forming a group with a regular grid in an X,Y plane, a central trace represented at the center of said bin along the time axis (T), said method being characterized in that for each line navigated, said central trace is produced from at least a first recorded trace whose offset is as close as possible to a constant offset equal to the smallest offset common to at least the group of traces of the navigated line.
摘要:
In a process for the preparation of organic disulphides and polysulphides by reaction of sulphur with a mercaptan or with a polysulphide of lower sulphur order in order to convert it into polysulphide of higher order, or alternatively by reaction of a mercaptan with an organic polysulphide of a high sulphur order in order to convert it into a polysulphide of lower sulphur order, in the presence of a catalyst in the form of a resin with a basic function, the resin is based on a polystyrene-divinyl benzene support functionalized with guanidine or amidine groups, and the reaction is preferably conducted in the presence of methanol.
摘要:
A method and apparatus for stabilizing crude oil at the outlet of a well, including at least one separation step wherein the crude oil is pressure distilled in at least one distillation column into at least two cuts, i.e., a C.sub.1-5 hydrocarbon gas cut recovered at the top of the column and a stabilized crude oil cut recovered below the point where the original crude oil was injected into the column. The method advantageously includes at least one decompression step before the separation step.