Installation for the preparation of oil or natural gas for transportation through the pipeline
(57) Abstract:The invention relates to devices move gas through the pipeline. The technical result of the invention is to prevent condensation of heavy hydrocarbons of petroleum or natural gas in the transport process gas to the consumer through the pipeline. The installation includes a device for raising or lowering the pressure of the gas admission and discharge gas lines, vortex the tube containing the cochlea and attached piping cold stream and at least one piping hot flow, cooling chamber, which is enclosed piping hot stream, and the condensing unit, which is connected by its input to an output pipe of the hot stream, one of its output - the output of condensate installation, and other exit from the cooling chamber. Out of the pipeline for cold flow connected to the gas flow line, the inlet chamber is connected with the admission of the gas line, the output of a cooling chamber connected to the inlet of the device to increase or decrease the pressure of the gas, the output of which is connected to the input of the cochlea of the vortex tube. 2 Il. The technical field
The invention relates to a device parametersetname, gas processing industries for purification of oil and natural gas from condensation of heavy hydrocarbons (C5-C15and impurities emitting light fractions (1-C4) at the initial stage of gas production and preparation for transportation through the pipeline.Art
Known device for the compression and transportation of natural gas containing consistently located device for increasing gas pressure (compressor) installed behind them refrigerators equipped with a condensate gathering tanks (RF Patent 2059920, CL F 17 D 1/07, 1995).The characteristics which are common to the known installation and claimed, are in the presence of the device to increase the gas pressure (compressor) and refrigerator.The cause of failure in a known installation of the claimed technical result is the emission of gas heavy hydrocarbons (condensate) by cooling the gas after the compression.The prototype is the setting for the compression and transport of gas, comprising a device for increasing gas pressure (compressor), admission and discharge line, the bypass gas line, sedimenta separation of oil, United gas pipeline with the receiving line, and further provided with a gas line, one end of which is connected to the selection line of the compressor, and the other with the bypass gas line and oil and gas pipelines, and locking elements mounted on the secondary pipeline is connected through the pressure regulators with gauges suction line of the compressor (USSR Author's certificate 1735658, CL F 17 D 1/07, 1992).The characteristics which are common to prototype and technical solutions are available to improve gas pressure (compressor), admission and discharge lines, as well as locking elements.The cause of failure in the prototype of the claimed technical result is that the separation of heavy hydrocarbons from the gas at the expense of massoobmennyh process gas and liquid flow in the receiving pipeline.The invention
The problem to which the invention is directed, is to prevent condensation of heavy hydrocarbons of petroleum or natural gas during transport this gas to the consumer through the pipeline.The technical result, oposredstvovanii or natural gas at the initial stage of its transport through the pipeline by applying a swirl effect separation of gas on cold stream, containing light fraction, convenient for transportation to the consumer through the pipeline, and the hot stream containing heavy fractions and other impurities that are convenient for their discharge from the gas by condensation (the effect of Wound-hilsa).Achieved technical result of the fact that the installation for the preparation of oil or natural gas for transportation through the pipeline, including a device for raising or lowering the pressure of the gas admission and discharge gas line also includes a vortex tube, including snail and attached piping cold stream and at least one piping hot flow, cooling chamber, which is enclosed piping hot stream, and the condensing unit, which is connected by its input to an output pipe of the hot stream, one of its output - the output of condensate installation, while others go out of their way - with the cooling chamber, out of the pipeline for cold flow connected to the gas flow line, the inlet chamber is connected with the admission of the gas line, the output of a cooling chamber connected to the inlet of the device to increase or decrease the pressure of the gas, the output of which is connected to the inlet of the vortex tube.New in relation to the prototype pengendali, as well as the relationships between them and with the specified device to increase or decrease gas pressure.In Fig.1 is a diagram of the installation for the preparation of oil or natural gas for transportation through the pipeline of Fig.2 is a graph of gas transportation through the territory of the Perm region.Information confirming the possibility of carrying out the invention.The apparatus comprises: a device 1 for raising or lowering the gas pressure, which in this case is used the compressor (pressure increase); admission 2 and 3 gas flow line; a vortex tube comprising a snail 4, the pipe 5 cold gas stream and at least one pipeline 6 hot gas flow is made in the form of a Laval nozzle; a cooling chamber 7; unit 8 condensation; a throttle element 9; output pipeline 10 condensate; and locking elements 11-17. When this piping cold 5 and 6 hot thread with their inputs connected to the outputs of the cochlea 4, the entrance of which is through the locking element 15 is connected to the output of compressor 1 (in the General case of the device to increase or decrease the pressure of the gas). Line 6 hot stream is located inside the cooling chamber 7, which locking element 11 is closed). The output of the pipeline 6 hot flow connected to the inlet of the condensing unit 8, one end of which is through the shutoff element 17 is connected to the output 10 of the condensate installation. Another output of the condensing unit 8 via the throttle element 9 is connected to one input of a cooling chamber 7, another entrance through which the locking element 13 is connected with the admission of the gas line 2. The block 8 of the condensation is performed in the form of a refrigerator cooled inlet gas, and is located inside the cooling chamber 7. However, the condensing unit can have a different design, for example in the form of a cyclone or separator, which may be located outside the cooling chamber 7.The operation is as follows.In working condition, install the locking elements 11 and 12 are closed, and the locking elements 13 to 17 are open. When this oil (or natural) gas from a gas source (not shown) in the suction line 2 through the open shut-off element 13 is supplied to the inlet chamber 7, where it acts as a refrigerant for pipe 6 hot gas stream and block 8-condensing gas. After passing through a cooling chamber 7, the gas through the open shut-off element 14 is fed to the inlet of compressor 1 (device to enhance which is made in the form of a vortex tube is Wound. The last feature is the presence of the vortex zone in the form of a nozzle 6 of Laval, the inner surface of which are chrome-plated to improve the efficiency and reduce the coefficient of adhesion of the liquid fractions to the surface of the vortex zone.In the cochlea 4 vortex tube separates the gas flow:
- cold gas stream (line 5), containing in percentage terms more light fractions (C1-C2with temperatures 10-15oWith; and this stream is suitable for further transportation through the pipeline to the consumer of gas flow through the pipeline 3;
- hot gas stream (line 6 - the Laval nozzle), containing in percentage terms more heavy fractions (4-C5and impurities most convenient for condensation in the condensing unit 8.High effect of condensation is achieved by the fact that the vortex area (line 6 - nozzle of Lavale) is located in the cooling chamber 7, so that a high degree drop in the specified vortex zone. The length of the latter is determined by the position of the spider in a Laval nozzle (yoke not shown), and the proportion between cold and hot streams of gas is determined by the throttle, the The design of the described setup provides access to the adjustments to the quantitative proportions of hot and cold streams.Hot flow from the vortex zone (line 6) with a high concentration capreolata fractions entered in block 8 of condensation, where there is a sharp cooling of the hot stream, causing a rapid drop of heavy fractions and impurities in the form of condensate. In the future, the entire volume of the condensate collects in the lower part of the condensing unit 8, and then through the open shut-off element 17 through the pipeline 10 is collected in the condensate (not shown).Unit 8 condensation made in the form of tubular elements through which passes the gas flowing through the suction line 2 from a source of gas having a low temperature. However, block 8 condensation can also be carried out in a cyclone or separator.In block 8 of the condensation is not all when it comes to gas condenses, part of the hot gas stream remains in the form of a vaporous gas heavy fractions and impurities that do not have time to fall in the condensate. This part of the hot gas stream in the vapor state through a throttle element 9 is injected into the cooling chamber 7, where selectorate input gas increases. Further, the gas from the cooling chamber 7 through the open shut-off element 14 is fed to the inlet of the compressor 1, where compremised and has consequently increased temperature, which increases the efficiency of the vortex tube.In the described setup using a stationary compressor 1, usually used on SCS, type VK-50/7 or VC-30/7. You can also use other types of compressors, as well as production lines, reducing the gas pressure in gas pipelines.Of the accompanying schedule of gas transportation through the territory of the Perm region (Fig. 2) shows that, depending on the capacity of the amount of pumped gas in the pipeline falls a certain amount of condensate. Condensation occurs due to natural conditions. A significant amount of deposition of condensate heavy fractions of hydrocarbons and impurities is a liquid phase, which creates certain difficulties in its transport. The proposed setup allows you to select a significant amount of the liquid phase condensate at an early stage of preparation of gas to transport. Installation for the preparation of oil or natural gas for transportation through the pipeline, including a device for raising or lowering the pressure of the gas admission and at least one piping hot stream a cooling chamber, which is enclosed piping hot stream, and the condensing unit, which is connected by its input to an output pipe of the hot stream, one of its output - the output of condensate installation, while others go out of their way - with the cooling chamber, while the outlet pipe for cold flow connected to the gas flow line, the inlet chamber is connected with the admission of the gas line, the output of a cooling chamber connected to the inlet of the device to increase or decrease the pressure of the gas, the output of which is connected to the inlet of the vortex tube.
FIELD: pipeline transport.
SUBSTANCE: power plant is additionally provided with a turbine expander provided with an electric generator. Power generated by the steam plant is directed to the main gas pipeline, and a part of power is directed to the turbine expander with electric generator to produce electric power.
EFFECT: enhanced reliability and efficiency.
1 cl, 1 dwg
FIELD: pipeline transport.
SUBSTANCE: method comprises intensifying extraction of low-pressure gas in tanks of oil stabilization due to rarefying gas in the inlet gas collector that connects the tank with the inlet of liquid-gas jet compressors by mixing the pumping product with active agent and increasing initial pressure of the low-pressure gas up to the pressure required by a consumer with simultaneous condensation of C5+ fraction. The gas-liquid mixture is supplied to the air cooling apparatus. After the separation of gas from the active agent, purifying and drying the compressed gas is intensified by supplying the compressed gas into the vortex pipe and, then, to the consumer.
EFFECT: improved method.
FIELD: oil and gas industry.
SUBSTANCE: device comprises device for enhancing and reducing pressure, receiving gas line for supplying the plant with the gas, discharging gas line through which the gas after purification is supplied from the plant, two vortex pipes, ejector, and condensate collector. The inlet of the first vortex pipe is connected with the receiving gas line and outlet of the cold gas flow of the second vortex pipe through the device for enhancing or reducing pressure. The output of the hot flow of the first vortex pipe is connected with the inlet of the first separator through the ejector, and the condensate outlet of the separator is connected with the inlet of the second vortex pipe. The outlet of the cold flow of the second vortex pipe is connected with the receiving gas.
EFFECT: enhanced quality of purification.
1 cl, 1 dwg
FIELD: preparation and transportation of petroleum associated and natural gases.
SUBSTANCE: invention relates to preparation of gas for transportation along gas pipeline and separation of heavy fraction condensate from gas. Proposed plant for preparation of petroleum associated gas or natural gas for transportation along gas pipeline and obtaining of liquid hydrocarbons from gas intake line, device to increase and decrease pressure, gas flow line, liquid hydrocarbons extraction line, three-circuit heat exchanger, separator, expansion valve, two regulating valves and swirl pipe whose input is connected through pressure increasing and decreasing device from one side with inlet gas line through first regulating valve and through series-connected second regulating valve and first circuit of heat exchanger, and from other side, with output of expansion valve. Output of cold flow of swirl pipe is connected through second circuit of heat exchangers with gas flow line, output of hot flow of swirl pipe is connected through third circuit of heat exchanger with input of separator whose condensate output is connected with line to remove liquid hydrocarbons, and gas output, with input of expansion valve.
EFFECT: increased degree of separation of condensate of heavy fractions of hydrocarbons from petroleum associated gas or natural gas designed for transportation along gas pipeline.
FIELD: the invention refers to energy-conservation technologies of pipeline transportation of natural gas.
SUBSTANCE: it may be used for controlling the technological process of the main pipeline with simultaneous selection out of gas of valuable ethane, propane, butane components. The technical result of the invention is reduction of energy inputs for maintaining pressure in the main pipeline, provision of stabilization of pressure in the main pipeline. The mode of transportation of natural gas along the main pipeline includes its feeding into the main pipeline on the first and the following compressor stations and giving out natural gas from the main pipeline through gas reducing stations and divide it on two flows one of them is directed into the pipeline of high pressure, and the other into a consumer pipe-bend. At that the gas of consumer pipe-bend is preliminary cooled and cleared from condensed and hard fraction, and then further cooling is executed till the temperature below the point of condensation of methane and division of cryogenic liquid and directed to the user, and out of received cryogenic liquid methane is separated from liquid ethane-propane-butane fraction which is returned into the pipeline of high pressure and further into the main pipeline, and detailed methane is directed into the pipe-bend. At that the gas in the pipeline of high pressure is preliminary additionally cooled, compremirated and returned into the main pipeline.
EFFECT: reduces power inputs.
7 cl, 1 dwg
FIELD: storage or transporting of natural gas.
SUBSTANCE: method comprises cooling natural gas down to a temperature below the temperature of the ambient air and transporting the cooled natural gas.
EFFECT: enhanced efficiency of storage and transporting.
16 cl, 13 dwg
FIELD: gas industry.
SUBSTANCE: method comprises separating the mixture into C1 methane fraction with subsequent supply to gas pipeline and C2+ hydrocarbon fraction that are preliminary stabilized by its liquefying by means of preliminary cooling down to a temperature at least 16°C and supplying to the gas pipeline. The pressure is maintained at a level no less than 3,2 MPa.
EFFECT: enhanced reliability of one-phase transporting.
FIELD: oil industry.
SUBSTANCE: supersonic tube comprises Laval nozzle, cyclonic separator with the blade, diffuser for discharging dried gas, and diffuser for discharging condensed liquid. The blade is made of deformed plate set in the screw groove made in the inner side of the cyclonic separator. The length of the plate is at least ½ of the pitch of the screw groove. The housing of the tube of the cyclonic separator receives locking members whose faces enters the screw groove. The distance between the adjacent locking members mounted in the screw groove is equal to the length of the plate.
EFFECT: enhanced efficiency.
FIELD: natural gas industry; other industries; production of the gas pipeline blowoff valves.
SUBSTANCE: the invention is pertaining to natural gas industry and is intended for blowing through of the gas pipelines. The technical result of the invention is the increased efficiency of usage of the gas pipeline blowoff valves at augmentation of the quantity of the delivered for utilization of the waste heavy hydrocarbon fractions of the natural gas for their additional condensation in the area of formation of the microswirlings between the exterior funnel-shaped and interior perforated conical walls. In the gas pipeline blowoff valve in the holes of the perforated conical wall there are the curvilinear grooves, which curvature is directed counterclockwise, and the curvature of the guiding vanes is made in the clockwise direction.
EFFECT: the invention ensures the increased efficiency of usage of the gas pipeline blowoff valves.
FIELD: gas conveyance means, particularly gas-main lines, gathering lines and manifolds of gas fields for condensate recovery.
SUBSTANCE: device to prevent condensate plug forming in pipeline comprises pipeline with inclined sections and connection elbows with enclosing channel. Discharge condensate pipe is formed in lower part of connection elbow. Condensate pipe is located in funnel-shaped enclosing channel and is connected to accumulation vessel located below ground freezing level. Condensate removal pipeline is installed in accumulation vessel so that the condensate removal pipeline is coaxially retained in vertical enclosing channel.
EFFECT: possibility to maintain thermal gas pipeline regime, which prevents condensate freezing, to remove accumulated condensate due to usage of steam condensation heat generated during condensation of steam present in conveying gas flow.