摘要:
A method includes providing a length of pipeline that has a housing defining a central bore extending the length of the pipe and a space formed within the housing and extending the length of the pipe. At least one condition within the space is continuously monitored within the space to detect in real time if a change in the housing occurs.
摘要:
The present disclosure provides a method for smart gas pipeline frost heave safety management and an Internet of Things system. The method includes: obtaining gas transmission data and gas pipeline data and determining gas pressure change data of a target point based on the gas transmission data and gas pipeline data; predicting temperature change data of the target point based on the gas pressure change data, the temperature change data including gas temperature change data and soil temperature change data; predicting, based on the temperature change data, the gas pipeline data, and the gas pressure change data, and in combination with environmental data, a frost heave degree data of the target point; and determining, based on the frost heave degree data of the target point, the gas transmission adjustment data and a frost heave prevention plan.
摘要:
A method and system for restoring flow capacity to a submerged fluid conduit comprising a laser light apparatus to generate blue laser light to be impinged on the fluid conduit. The method and system include a frequency multiplier (15) for converting infrared laser light from a laser light generator (14) to blue laser light having a higher transmissivity in seawater. The frequency multiplier may be disposed on a submergible vehicle (2). In one embodiment, a non-submerged infrared laser light generator (14) supplies, via optical conduits (21), laser light to a submerged frequency multiplier (15) on the vehicle (2). Blue laser light, at a wavelength in the range of 440-500 nm, is emitted through an optical window and through seawater to impinge on the surface of the fluid conduit.
摘要:
The present invention relates to a method for reducing gas hydrate adhesion to the interior surface of a conduit and associated equipment transporting or processing a fluid stream in oil and gas exploration and production, petroleum refining and/or petrochemistry, by providing the conduit interior surface with a coating layer exhibiting a static contact angle of the sessile water drop on the coating layer in air higher than 75° at ambient air conditions, as measured according to ASTM D7334-08, wherein said coating layer comprises diamond like carbon (DLC) comprising fractions of one or more components selected from the group consisting of silicon (Si), oxygen (O) and fluor (F).
摘要:
One embodiment of the present invention is a portable natural gas discharge system for discharging compressed natural gas into a receiving location. The system comprises a portable chassis for holding the natural gas discharge system and all subcomponents, an inlet port for receiving the natural gas at an inlet pressure higher than a pressure of the receiving location, an expansion valve for regulating pressure of the natural gas to a stable intermediate pressure, a heat exchanger for heating up the cooled natural gas stream as a result of cooling due to expansion, a regulator for regulating a flow of the heated natural gas stream through the heat exchanger and out of the portable natural gas discharge system, and a discharge port for discharging the heated natural gas stream into the receiving location.
摘要:
The present invention provides a method of inhibiting formation of solid hydrates in a conduit used to contain a flowing, water-containing hydrocarbon, which method comprises introducing into said hydrocarbon in said conduit a gas which raises the pressure threshold for hydrate formation for said water-containing hydrocarbon, said gas being introduced in a manner which causes it to travel along at least part of said conduit in the direction of hydrocarbon flow.
摘要:
A gelled composition for pipeline, flowline, pipeline jumper or flowline jumper dewatering or preventing ingress of seawater into open pipeline systems or components during tie-in operations of jumpers or additional pipe, valving, manifolds, subsea pipeline architecture or flow conduits operations is disclosed, where the composition includes a concentrated metal formate solution and a hydratable polymer. The gelled formate compositions have improved dewatering properties with 100% or 360 pipe coverage. The gelled formate compositions have can also be reused by breaking and reformulation.
摘要:
A gas pressure reducer comprising at least one gas expansion device for allowing the gas to expand and thereby reduce in pressure, and at least one means for raising the temperature of the gas in the vicinity of the gas expansion device and wherein the means for raising the temperature of the gas comprises a liquid or solid fuel heater or a liquid fuelled engine.
摘要:
An additive for inhibiting the formation of gas hydrates in connection with hydrocarbon production and transportation comprising the water-soluble polymers comprising structural elements of the formula wherein each R is independently H or C1-C5-alkyl; X is H, an alkaline or earth alkaline metal or a quaternary ammonium group; R1 is H or C1-C18-alkyl; and R2 is C1-C18-alkyl; and wherein the alkyl groups represented by R1 and R2 optionally carry a hydroxy or amino substituent; and, optionally, a minor proportion of structural elements of the formula wherein R, R1, R2 and X may have the meaning as above, and Alk is a C1-C5-alkylene chain.
摘要:
The invention relates to the use of compounds of the formula (1) 1 in which R1 is C1- to C24-alkyl, C2- to C24-alkenyl or a C6- to C18-aryl radical which may be substituted by a C1- to C12-alkyl group, R2, R3 independently of one another, are hydrogen, C1- to C18-alkyl, or C5- to C7-cycloalkyl, or R2 and R3, including the nitrogen atom to which they are bonded, form a ring of 4 to 8 ring atoms, in which oxygen or nitrogen atoms may also be present in addition to carbon, A are identical or different C2- to C4-alkylene radicals, B is C1- to C7-alkylene, and n is an integer from 1-40, as gas hydrate inhibitors.