Abstract: The present invention proposes a process for extracting and determining nitrogenous and acidic compounds in various types of petroleums, derivatives or thermal degradation products, and in process waters before the production/refining phase. When the methodology is applied to petroleum and byproducts, the process comprises the extraction steps (1); separation (2); pre-concentration (3); and analysis (4). When the methodology is applied to thermal degradation products, there is a need for a previous step to simulate the heating of petroleum containing different chemicals (if necessary) with the purpose of promoting thermal degradation of the species present and of the petroleum, and generating nitrogen compounds with simpler composition.

Abstract: The present invention relates to a method for applying scale inhibitor to completion fluids during injectivity test operations. Said method takes advantage of the completion fluid to inhibit scaling in the reservoir by filling the porous spaces of the reservoir rock with the inhibited completion fluid. When the well is put into production, this inhibited fluid positioned inside the reservoir will be produced together with the oil and will inhibit the formation of scale inside the reservoir and on production equipment.

Abstract: The present invention describes a system and method for analyzing carbon isotope ratio in natural gas. Said system comprises a sample injection vessel (1), a chromatograph (2) comprising a first chromatographic column (3) and a second chromatographic column (5), in which a combustion reactor (4) is presented between said first and second chromatographic columns, external to the chromatograph (2), and in which an isotope ratio mass spectrometer (6) is connected to the output of the second chromatographic column (5) and feeds the data system (7) with the results found for the sample in order to generate the chromatogram. In a second modality, the method of analyzing the carbon isotopic ratio in natural gas comprises the use of said system, which allows greater separation between the nitrous oxide and carbon dioxide components, eliminating the interferences found in the state of the art.

Abstract: The present invention relates to devices and methods for containing gas leaks in pipelines. In particular, the present invention describes a device for eliminating gas leaks by sealing a gas leak in an expansion joint arranged between two pipes misaligned with each other, the device comprising a metallic structure comprising a sealing blanket, in which the metallic structure and blanket fully enclose the expansion joint using cables. In addition, the present invention describes a gas leak elimination device for sealing a gas leak in an expansion joint arranged between two aligned pipes, the device comprising a sealing blanket, steel cables, straps and fastening elements to fully enclose the expansion joint.

Abstract: A device for removing misalignments between flanges of pipeline ends. More specifically, a device that, operated by an ROV, allows flange holes at the ends of subsea pipelines to be aligned so that interconnection operations between said pipelines can be embodied. To this end, the device described herein comprises an elongated metallic body having at least two diameters and presenting a gradual reduction between the component diameters. Additionally, a fixed nut is mounted on the larger diameter side of the elongated body, followed by a manipulator for administration by the ROV. On the other hand, a movable nut is mounted on the smaller diameter side of the elongated body, and the tightening movement made by the ROV on this movable nut causes the device to pass through the holes to be aligned, precisely, in the direction of the larger diameter of the device of the invention.

Abstract: A sealing ring positioning device that, operated by a remotely operated vehicle (ROV), allows sealing rings to be installed, in the subsea environment, in a groove of a flange of a first pipeline to be interconnected to a second pipeline. The sealing ring positioning device is provided with an upper portion that is presented as a handle by which the ROV handles the device in a subsea environment, a lower portion having a semicircle shape and configured to hold the sealing ring to be arranged in the flange groove in a subsea environment, and a middle portion including a groove holding a magnet that is configured to hold the device firmly positioned in the pipeline in a subsea environment, during the arrangement of the ring in the groove of the flange.

Abstract: The present invention relates to a structure and method of hoisting pipelines for subsea connection assisted by a remotely operated vehicle, ROV. Particularly, the present invention describes a pipeline hoisting structure comprising three beams joined together in a U-shape, and two hoisting systems, each being coupled to one of the vertical beams of the hoisting structure.

Abstract: The present invention aims at solving the difficulty of coupling a subsea torque tool, which is usually used by ROVs, to the nuts of cases used to join flanges in pipelines and pipes. In this way, a nut guide (3) is proposed, which is used in pre-assembly and which is coupled to the nut (2) through an adhesive means or any other appropriate joining means, wherein the torque tool is quickly and smoothly guided to the ideal position for tightening or loosening the flanges by using the screw (1) and nut (2) assembly, facilitating the fitting and minimizing the number of alignment maneuvers between the torque tool and the nut (2).

Abstract: The present invention relates to a method for manufacturing a deliquescent desiccant material, preferably for the dehydration of natural gas, which comprises the steps of (a) preparing a solution comprising water, alcohol, a weak base and a deliquescent salt; (b) stirring the solution obtained in (a) until complete dissolution of the deliquescent salt; (c) adding a silica precursor to the solution obtained in (b), and stirring for sufficient time for the mixing to be complete; and (d) keeping the solution obtained in (c) in an oven, until the liquid has completely evaporated. The present invention also relates to a deliquescent desiccant material, and to the use of said material for drying gases.

Abstract: The present invention relates to a method of controlling a flare gas recovery system, which meets all possible operational scenarios in a primary oil processing plant in a completely continuous, stable and transparent manner for the operator. In particular, the steps performed in the method proposed here include Initialization and Checking the availability of the main compressor, and Monitoring the system inlet pressure and Adjusting the compressor request. More precisely, the method described by the present invention is capable of operating in four operating modes, which comprise: a) a volume accumulation scenario for startup, referring to a system switched on with no compressor yet operating; b) a low burn scenario, referring to a system connected with a single compressor in operation; c) a high burn scenario, referring to a system connected with two compressors in operation; and d) a scenario of high sequential burns, referring to a system connected in “switch mode” between compressors.

Abstract: A telescopic joint for connecting two pipes in a separating vessel of a fluid catalytic cracking unit includes a first pipe and a second pipe; wherein the two pipes are connected together at their ends by a sliding ring comprising a first portion extending substantially parallel to the first and second pipes, and a second portion extending substantially perpendicular to the first and second pipes, to thereby form an L profile; the first pipe comprises a fitting seat fixed at its end, and a flanged ring, the flanged ring and the fitting seat being configured to surround at least partially the second portion of the sliding ring; and the telescopic joint comprises a first plurality of gaskets positioned in a first space between the second portion of the sliding ring and the fitting seat and distributed in a direction parallel to the second portion of the sliding ring.

Abstract: The present invention describes a device with a jig for cutting clay mineral slides oriented for analyses of the X-ray diffractometry technique. The device speeds up the preparation of the clay mineral slide and guarantees the standardization of the final size of the material, for subsequent fitting into the holder of the manufacturer of the X-ray Diffraction (XRD) equipment. The device of the present invention can be manufactured from polyacetal and basically comprises at least one fixing screw, at least one orientation guide base and at least one removable holder. The device can be fully applied to any XRD analysis that is performed on glass slides. Examples of interested parties are the mining, cement and oil industries and other fields of exploration of mineral resources.

Abstract: This invention encompasses a system and a method used in the petrochemical and mechanical engineering area, more specifically in the area of protecting pipes or similarly shaped objects against external or internal damage or wear, which comprises a protective system for the ends and the inside of coated pipes, using the coating itself and other additional devices. The system is comprised of a cup (1), spacer (2), coating (3), external ring (4), and cap (5) used in the production line of the pipe-coating process, using the external coating itself, preventing corrosion and mechanical damage at the ends/bevel, in the sandblasted area of the collar and internal surface, from storage and transport to the location where it will be used, and welding in the field or on the vessel.

Abstract: The present invention relates to a method for predicting the restart of paraffinic oil flow by being able to estimate the precipitated paraffin fraction under conditions of production stoppage through differential scanning calorimetry (DSC) tests and rheological evaluation, to predict the yield stress (TLE) profiles in pipes containing gelled paraffinic petroleum and the time interval until line blockage formation (available waiting time—TED).

Abstract: The present invention presents a laser mandrel (9) capable of being installed in the production string, in a position below the ICVs valves (2 and 4), to be used in a first moment aiming at preventing the formation of scale in the ICVs valves (2 and 4), and, in a second moment, for the removal of scale from the production string (1). The laser mandrel (9) of this invention is provided with fiber optic cable (5), electrical cable (6), collimators (7), and laser diodes (8). It can be applied to prevent damage to well strings with electric intelligent completion, in case there is a failure in the chemical injection system installed in the string. It also makes possible the improvement of the technique aiming at the inhibition of inorganic depositions. Furthermore, it has a significantly lower cost than the conventional squeeze and/or removal, because once it is installed in the string, it allows the management of scale.

Abstract: The present invention is related to cooling systems for electronic devices used in downhole operations. In this scenario, the present invention provides a downhole electronic device cooling system comprising a first heat exchanger element (1) internal to a heat exchanger vessel (3), and a second heat exchanger element (2) associated with the electronic device (4), wherein the first (1) and second (2) heat exchanger elements are in fluid communication by a cooling fluid, wherein the heat exchanger vessel (3) allows the circulation of a secondary cooling fluid.

Abstract: The present invention relates to a method for storing chemical products or their solutions in reservoir rock. In said method, the cargo boat containing the chemical product to be stored in the reservoir is connected to the production platform through an appropriate connection and connecting to the well header. The product is pumped through the chemical product capture line using a triplex chemical injection pump aligned to the head of the production or injection well. The product is pumped through the surface lines, riser and subsea line and, passing through the WCT, it is injected into the reservoir through the production or injection string.

Abstract: The present invention relates to devices and methods for containing gas leaks in pipelines. In particular, the present invention describes a device for eliminating gas leaks by sealing a gas leak in an expansion joint arranged between two pipes misaligned with each other, the device comprising a metallic structure comprising a sealing blanket, in which the metallic structure and blanket fully enclose the expansion joint using cables. In addition, the present invention describes a gas leak elimination device for sealing a gas leak in an expansion joint arranged between two aligned pipes, the device comprising a sealing blanket, steel cables, straps and fastening elements to fully enclose the expansion joint.

Abstract: The present invention proposes a process for extracting and determining nitrogenous and acidic compounds in various types of petroleums, derivatives or thermal degradation products, and in process waters before the production/refining phase. When the methodology is applied to petroleum and byproducts, the process comprises the extraction steps (1); separation (2); pre-concentration (3); and analysis (4). When the methodology is applied to thermal degradation products, there is a need for a previous step to simulate the heating of petroleum containing different chemicals (if necessary) with the purpose of promoting thermal degradation of the species present and of the petroleum, and generating nitrogen compounds with simpler composition.

Abstract: The present invention aims at solving the difficulty of coupling a subsea torque tool, which is usually used by ROVs, to the nuts of cases used to join flanges in pipelines and pipes. In this way, a nut guide (3) is proposed, which is used in pre-assembly and which is coupled to the nut (2) through an adhesive means or any other appropriate joining means, wherein the torque tool is quickly and smoothly guided to the ideal position for tightening or loosening the flanges by using the screw (1) and nut (2) assembly, facilitating the fitting and minimizing the number of alignment maneuvers between the torque tool and the nut (2).