Plant for preparing oil or natural gas for transporting in pipeline

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

 

The technical field to which the invention relates.

The invention relates to methods for moving gas through the pipeline and can be used in oil, chemical, gas, oil refining, gas processing industries for purification of oil and natural gas from condensation of heavy hydrocarbons (C5-C15and impurities emitting light fractions (C1-C4) at the initial stage of gas production and preparation for transportation through the pipeline.

The level of technology

Known device for the compression and transport of gas, comprising a device for increasing gas pressure (compressor), admission and discharge line, the bypass gas line connected with the discharge line of the compressor, locking elements, and installation combined with the pipeline device, an oil separator connected to the pipeline with 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 No. 1735658, CL F 17 D 1/07, 1992).

The characteristics of the known device, coinciding with the features of the declared technical solutions are available give the tion for increasing gas pressure (compressor), the admissions and discharge lines, as well as locking elements.

The reason to obtain a technical result, which is provided by the claimed technical solution lies in the fact that the separation of heavy hydrocarbons from the gas at the expense of mass transfer processes in the gas and liquid flow in the receiving pipeline.

The closest analogue (prototype) is the installation for the preparation of oil or natural gas transport by pipeline, including 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, while others go out of their way - with the cooling chamber, while the outlet pipe cold stream is connected with a 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 (Patent RU № 2181459 C1, CL F 1 D 1/02, date of publication: 20. 04.2002).

The characteristics of the known device that matches the characteristics of the claimed technical solution is to have a device for raising or lowering the gas pressure, the admission and discharge gas line of the vortex tube made with the possibility of forced cooling its working zone and separator (condensing unit).

The reason to obtain a technical result, which is provided by the claimed technical solution is that the separation of the heavy fractions of hydrocarbons is carried out in conditions of high working pressure and high concentration of heavy hydrocarbons, which reduces the effectiveness of the desired separation of the gas flow in the vortex tube.

Disclosure of inventions

The task, which directed the claimed technical solution is to increase the degree of gas purification from kondensatornaya fractions.

The technical result, the mediating solving this problem is the use of low operating pressure in the second stage of purification of gas (the second vortex tube) mode and low temperature and concentrations of heavy fractions of hydrocarbons in the gas stream at the input of the first (primary) of the vortex tube.

Achieved technical result that installation on the I preparation of petroleum or natural gas for transportation through the pipeline contains a device for raising or lowering the pressure, receiving a gas line, through which is supplied a source of petroleum or natural gas, the discharge gas line for installation in the pipeline for further transportation arrives purified from heavy hydrocarbon fractions of petroleum or natural gas, two vortex tubes made with the possibility of forced cooling their work areas, two separator, the ejector and the drive of the condensate, while the inlet of the first vortex tube through the device to increase or decrease the pressure associated with the admission of the gas line and the release of cold stream of the second vortex tube, the outlet of the cold flow first vortex works connected with the discharge gas line, the output of the hot flow first vortex tube through the ejector, in which the given thread is a working body connected to the input of the first separator, the condensate of which is connected with the drive of the condensate, and the output of gas to the input of the second vortex tube, the output of cold flow of the second vortex tube is connected with said receiving a gas line for a merger of the cold flow from the source of petroleum or natural gas to supply the United thus flow to the input of the first vortex tube, the output of the hot stream of the second vortex tube is connected to the input of the second separator, conden the ATU which is connected with storage of condensate, and the output of the gas through the said ejector is connected to the input of the first separator.

New features of the claimed technical solution is that the installation includes a second vortex tube, the second separator, the ejector, and the entrance of the first vortex tube through the device to increase or decrease the pressure associated with the admission of the gas line and the release of cold stream of the second vortex tube, the output of the hot flow first vortex tube through the ejector, in which the given thread is a working body connected to the input of the first separator, the condensate of which is connected with the drive of the condensate, and the output of gas to the input of the second vortex tube, the output of cold flow of the second vortex tube is connected with said receiving gas line for the possibility of a merger of the cold flow from the source of petroleum or natural gas to supply the United thus flow to the input of the first vortex tube, the output of the hot stream of the second vortex tube is connected to the input of the second separator, the condensate of which is connected with the drive of the condensate, and the output of the gas through the said ejector is connected to the input of the first separator.

Brief description of drawings

The drawing shows a functional diagram of the installation for the preparation of petroleum or natural gas for transport is the pipeline

The implementation of the invention

Installation for the preparation of petroleum or natural gas for transportation through the pipeline includes receiving a gas line 1, through which is supplied a source of petroleum or natural gas, the device 2 to increase or decrease gas pressure (compressor or vacuum pump), gas flow line 3, which from the installation in the pipeline for further transportation arrives purified from heavy hydrocarbon fractions of petroleum or natural gas, the first 4 and second 5 vortex tube, the first 6 and second 7 separators, the ejector 8 and the drive condensate 9.

The first vortex tube 4 includes a snail 41, which is the entrance of this vortex tube, pipe 42cold stream, which is the output of cold flow of the vortex tube, the pipe 43hot flow, which is the output of the hot flow of the vortex tube, and a cooling chamber 44within which is located the pipeline 43equipped with fins to increase the area of heat transfer.

The second vortex tube 5 includes a snail 51, which is the entrance of this vortex tube, the pipe 52cold stream, which is the output of cold flow of the vortex tube, the pipe 53hot flow, which is the output of the hot stream this vikhreva the pipe, and the cooling chamber 54within which is located the pipeline 53equipped with fins to increase the area of heat transfer.

Input 41the first vortex tube 4 through the device 2 to increase or decrease the pressure associated with receiving a gas line 2, exit 52cold flow of the second vortex tube 5. Output 42cold flow first vortex tube 4 is connected with a discharge gas line 3 through the control valve V1 and the inlet chamber 44through control valve V2. When this pipeline 42cold stream is made in the form of a set of telescopic tubular elements, using the collected methane or other gas components required for various kinds of technical support.

The output of the cooling chamber 44connected to the inlet chamber 54, the output of which is connected with the discharge gas line 3.

The output of the hot stream 43the first vortex tube 4 through the ejector 8, in which the given thread is a working body connected to the input of the first separator 6. Output 61the first condensate separator 6 is connected to the drive 9 of the condensate. Output 62gas of the first separator 6 is connected to the input 51the second vortex tube 5.

Output 52cold flow of the second vortex tube 5 is connected with the mentioned PR is slightly gas line 2 for the possibility of a merger of the cold flow from the source of petroleum or natural gas to supply the United thus flow to the input 4 1the first vortex tube. Output 53the hot stream of the second vortex tube 5 is connected to the input of the second separator 7, exit 71the condensate which is connected to the drive 9 of the condensate, and the output 72gas through the said ejector 8 is connected to the input of the first separator 6.

The operation is as follows.

Oil (or natural) gas from a gas source (not shown) in the suction line 1 is fed to the input device 2 to increase or decrease the pressure, where it is mixed with the purified gas flowing from the outlet 52the second vortex tube 5, and then the mixture with the desired pressure is fed to the input 41the first vortex tube 4.

In the vortex tube 4 gas is the primary vortex separation on a cold stream of the first stage and the hot stream of the first stage.

The cold stream of the first step (line 42contains a percentage more light fractions and has a relatively low temperature, so that it is suitable for further transportation through the pipeline to the consumer through the discharge pipe 3 and is used for controlled cooling pipes 43and 53mentioned vortex tubes. Previously from this stream is collected methane (or other gas) through the telescopic pipe elements (not shown)embedded in t is unaproved 4 2. Below the cold flow through the control valves V1 and V2 is divided into two streams: the first stream through the valve V1 is fed directly into the flow line 3, and the second flow through the valve V2 sequentially passes through a cooling chamber 44and 54, where it acts as a cooling medium, and further connecting with the first-mentioned thread comes along with this stream in flow line 3. Passing through the said chamber with the flow rate determined by the ratio of flow cross sections of the valves V1 and V2, the cold flow cools the piping hot flow vortex tubes to exclude the influence of the gas flow of the first steps on the gas temperature at the inlet of the second vortex tube. This is necessary so that the source gas fed to the input of the second vortex tube, is guaranteed provided the lowest component of the T·ΔSR(where ΔSR- component of the entropy, T is the gas temperature at the inlet of the second vortex tube).

The hot stream of the first step (line 43contains a percentage more heavy fractions and impurities, the most convenient for condensation in the separator 6. The flow through the ejector 8, in which it (the thread) is the working fluid enters the first separator 6, where the allocation of a condensate. Formed the same, the way the condensate from the outlet 6 1the separator 6 is supplied to the memory 9.

Remaining after the allocation of part of the gas condensate mentioned the hot stream of the first stage serves to input 51the second vortex tube 5, which is subjected to the secondary vortex separation on the cold flow of the second step (line 52), which contains mainly light fractions of hydrocarbons, and the hot stream of the second step (line 53), mainly containing heavy fractions of hydrocarbons.

The hot stream of the second step (line 53with a relatively high concentration capreolata fractions is fed to the second separator 7, where the allocation of a condensate. The condensate from the outlet 71the separator 7 is supplied to the memory 9. Remaining after the allocation of part of the gas condensate mentioned the hot stream of the second stage output 72the second separator 7 to the input of the ejector 8, where it is mixed with a hot stream of the first stage, and formed in this way the mixture is fed to the input of the first separator 6.

Thus, the feature of the claimed technical solution is that the process gas is divided into two stages. The first stage (vortex tube 4 and the separator 6) provides maximum cleaning gas from kondensatornaya fracc the th with simultaneous partial separation of the condensate and the release of methane to the extent necessary for technological applications, making suitable gas for transportation through the pipeline. At the same time the first stage provides the technological conditions of the second stage. In turn, the second stage (vortex tube 5 and the separator 7) performs a deep separation of condensate and forms on the quality of recovery amount of gas, providing effective quality and process conditions of the first stage. In this mode of operation is determined by the conditions of the cooling pipes 43and 53hot flow vortex tubes and the pressure difference of the inlet and outlet gas streams. The latter, in turn, leads to a power-saving nature of the technology of gas sold by the declared facility.

1. Installation for the preparation of petroleum or natural gas for transportation through the pipeline that contains the device to increase or decrease the pressure receiving gas line, through which is supplied a source of petroleum or natural gas, the discharge gas line for installation in the pipeline for further transportation arrives purified from heavy hydrocarbon fractions of petroleum or natural gas, two vortex tube, the ejector and the drive of the condensate, while the inlet of the first vortex tube through the device to increase or decrease pressure svazas receiving a gas line and the release of cold stream of the second vortex tube, the output of cold flow first vortex tube connected to the gas flow line, the output of the hot flow first vortex tube through the ejector, in which the given thread is a working body connected to the input of the first separator, the condensate of which is connected with the drive of the condensate, and the output of gas to the input of the second vortex tube, the output of cold flow of the second vortex tube is connected with said receiving a gas line for a merger of the cold flow from the source of petroleum or natural gas to supply the United thus flow to the input of the first vortex tube, the output of the hot stream of the second vortex tube is connected to the input of the second separator, the condensate of which is connected with the drive of the condensate, and the output of the gas through the said ejector is connected to the input of the first separator.

2. Installation according to claim 1, characterized in that it is equipped with two cooling chambers, which are appropriate piping hot stream corresponding vortex tubes, while a cooling medium in both chambers is the cold flow first vortex tube, supplied in these cameras with the ability to regulate its flow.



 

Same patents:

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.

1 dwg

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

The invention relates to techniques for managing operations of the process gas transportation

The invention relates to pipeline transport

The invention relates to transport gas and is used to restore the high concentration of inhibitors

The invention relates to the field of pipeline transport of gas

The invention relates to the field of pipeline transport of gas
The invention relates to oil and gas industry and can be used in the development and exploitation of gas fields, namely for transportation of natural gas, including associated

The invention relates to oil and gas industry and can be used in the processes of field and factory processing, hydrocarbon gas, in particular, upon cooling, the crude hydrocarbon gas booster compressors before the subsequent drying and preparation for transport

The invention relates to pipeline transport and can be used for transportation of compressed gas through pipelines, in particular, on the areas of large extent, related to the impossibility or difficulty of construction of the intermediate compressor stations

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.

1 dwg

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.

1 dwg

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.

2 dwg

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.

4 dwg

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.

4 dwg

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.

1 dwg

Up!