CN204973152U - Offshore oil field oil -gas separation device - Google Patents
Offshore oil field oil -gas separation device Download PDFInfo
- Publication number
- CN204973152U CN204973152U CN201520669066.XU CN201520669066U CN204973152U CN 204973152 U CN204973152 U CN 204973152U CN 201520669066 U CN201520669066 U CN 201520669066U CN 204973152 U CN204973152 U CN 204973152U
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- oil
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- gas transmission
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Abstract
The utility model provides an offshore oil field oil -gas separation device, includes that the export pipeline section by the middle pipeline section of the entry pipeline section of level setting, the setting that has a down dip and level setting connects gradually the oil -gas separation person in charge line that constitutes, and crude oil feed line is connected to the port of the pipeline section that enters the mouth, and the port formation liquid phase of export pipeline section exports, and the liquid phase exports the entry linkage with follow -up oil water separator, being in charge of with the second gas transmission in the first gas transmission that both ends were equipped with vertical setting respectively around of middle pipeline section and being in charge of, upper end that two gas transmissions are in charge of connects on the gas transmission collecting main that the level set up, and the end connection of gas transmission collecting main has last elbow, and the port of going up the elbow forms the gas outlet, install automatic control valve door and manual control valve door respectively in gas outlet position and liquid phase exit position, divide the outside of tubes to install the level gauge in the second gas transmission. Adopt this oil -gas separation device, dissolubility gas is effectively deviate from in messenger's crude oil to avoided adding a large amount of chemical agent in the crude oil processing flow, and then guaranteed follow -up flow and steadily gone on.
Description
Technical field
The utility model belongs to crude oil processing technology field, particularly a kind of offshore oilfield gas and oil separating plant.
Background technology
At present at sea in oilfield exploitation, two-phase oil water separator and three-phase oil water separator are mainly adopted to the separation that crude oil carries out oil, water gentle.The structure of two-phase oil water separator or three-phase oil water separator itself is mainly separated with water oil, although it also can separate section gas, point gas poor effect, when the air content in crude oil is higher, usual needs add a large amount of chemical agents, make the most of gas overflowing in crude oil.The interpolation of a large amount of chemical agent can bring adverse influence to follow-up flow process, therefore needs to design a kind of gas and oil separating plant being applicable to offshore oilfield operation.
Summary of the invention
The utility model provides one that dissolved gas in crude oil is effectively deviate from for solving in known technology the technical problem that exists, thus avoid adding a large amount of chemical agent in crude Treatment flow process, and then ensure the offshore oilfield gas and oil separating plant that follow-up flow process is steadily carried out.
The technical scheme that the utility model is taked for the technical problem existed in solution known technology is:
A kind of offshore oilfield gas and oil separating plant, it is characterized in that: comprise Oil-gas Separation Trunk Line, Oil-gas Separation Trunk Line by horizontally disposed entrance pipeline section, have a down dip arrange middle pipeline section and horizontally disposed outlet pipe section connect and compose successively, the port of entrance pipeline section is connected with oil transmission line, the port of outlet pipe section forms liquid-phase outlet, and liquid-phase outlet is connected with the entrance of follow-up oil water separator; Be respectively equipped with the first gas transmission vertically arranged to be in charge of to be in charge of with the second gas transmission in the front-end and back-end of middle pipeline section, the upper end that two gas transmissions are in charge of is connected on horizontally disposed gas transmission main, the end of gas transmission main is connected with elbow, and the port of upper elbow forms gas vent; Be separately installed with an autocontrol valve and a manual control valve in gas vent position and liquid-phase outlet position, outside the second gas transmission is in charge of, liquid level gauge be installed.
The technical scheme that the utility model can also be taked is:
The angle that has a down dip of described middle pipeline section is 30 ° ~ 40 °.
The centre distance of described entrance pipeline section and outlet pipe section is 5m ~ 5.5m.
The ratio of the caliber that the caliber of described Oil-gas Separation Trunk Line is 14 inches ~ 16 inches, the first gas transmission is in charge of and the caliber that the second gas transmission is in charge of is 1:1.
The advantage that the utility model has and good effect are:
Adopt this offshore oilfield gas and oil separating plant, in the process that crude oil is carried in Oil-gas Separation Trunk Line, when being transported to the incoming-side location of middle pipeline section, because the proportion of oil gas is different, the fluid that proportion is larger flows downward along middle pipeline section, and the less gas of proportion floats and enters in the first gas transmission is in charge of, so just achieve effective separation of oil, gas, thus avoid add a large amount of chemical agents again to realize the separation of gas in follow-up oil water separator, and then ensure that follow-up flow process is steadily carried out.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
In figure: 1, Oil-gas Separation Trunk Line; 1-1, entrance pipeline section; 1-2, middle pipeline section; 1-3, outlet pipe section; 2, the first gas transmission is in charge of; 3, the second gas transmission is in charge of; 4, gas transmission main; 5, upper elbow; 6, autocontrol valve; 7, manual control valve; 8, liquid level gauge.
Detailed description of the invention
For summary of the invention of the present utility model, Characteristic can be understood further, hereby exemplify following examples, and coordinate accompanying drawing to be described in detail as follows:
Refer to Fig. 1, a kind of offshore oilfield gas and oil separating plant, comprises Oil-gas Separation Trunk Line 1, Oil-gas Separation Trunk Line by horizontally disposed entrance pipeline section 1-1, have a down dip arrange middle pipeline section 1-2 and horizontally disposed outlet pipe section 1-3 connect and compose successively.The port of entrance pipeline section is connected with oil transmission line, and the port of outlet pipe section forms liquid-phase outlet, and liquid-phase outlet is connected with the entrance of follow-up oil water separator, and wherein oil water separator is not shown in the accompanying drawings.Be respectively equipped with in the front-end and back-end of middle pipeline section vertically disposed first gas transmission be in charge of 2 and second gas transmission be in charge of 3, the upper end that two gas transmissions are in charge of is connected on horizontally disposed gas transmission main 4, the end of gas transmission main is connected with elbow 5, and the port of upper elbow forms gas vent.Be separately installed with autocontrol valve 6 and a manual control valve 7 in gas vent position and liquid-phase outlet position, outside the second gas transmission is in charge of, liquid level gauge be installed.
In said structure, the angle that has a down dip of described middle pipeline section is preferably: 30 ° ~ 40 °, better optimized angle is 35 °.
In said structure, the centre distance of described entrance pipeline section and outlet pipe section is preferably: 5m ~ 5.5m, better preferred distance is 5.2m.
In said structure, the caliber of described Oil-gas Separation Trunk Line is: 14 inches ~ 16 inches, the ratio of caliber be in charge of of the caliber be in charge of of the first gas transmission and the second gas transmission is 1:1:.Such as, the caliber of Oil-gas Separation Trunk Line is 16 inches, and the caliber that two gas transmissions are in charge of is 4 inches.
This gas and oil separating plant mainly relies on gravity by Oil-gas Separation, gas-liquid flow prompt drop is controlled low at the arrival end of device, gas will be separated at the first gas transmission place of being in charge of, major part gas is in charge of by the first gas transmission and is isolated, then discharged by gas vent, degassed liquid flows down to through the middle pipeline section of Oil-gas Separation Trunk Line and reaches liquid-phase outlet, then flow into next stage flow process.Generally, two gas transmissions are in charge of interior liquid level and are controlled by autocontrol valve, if autocontrol valve is not enough to regulate liquid level to reach test effect, the balance of device downstream gas-liquid pressure can be utilized to regulate liquid level, above-mentioned autocontrol valve prevent gas transmission be in charge of in be full of liquid.
Adopt this offshore oilfield gas and oil separating plant, in default situations, be positioned at the manually-operated gate standard-sized sheet of liquid-phase outlet position, liquid level is controlled by the autocontrol valve of gaseous phase outlet position; If gas transmission does not have liquid level in being in charge of, the autocontrol valve standard-sized sheet of gaseous phase outlet position, closes the manual control valve being positioned at liquid-phase outlet position, generates back pressure; When back pressure reaches certain numerical value, liquid level rises starting, and gaseous phase outlet valve starts again cut out to obtain required liquid level.
This offshore oil and gas separator specific operation process is adopted to be:
1, need correctly parts to be installed before debugging, need before test to carry out device Leakage Test;
2, autocontrol valve is corrected before device operation;
3, the aperture position of autocontrol valve is set as a lower value (can between 10%-20%);
4, open gaseous phase outlet autocontrol valve, gaseous phase outlet maintains the level value of setting by opening and closing.If gas vent autocontrol valve standard-sized sheet does not have liquid level simultaneously, liquid-phase outlet there will be certain back pressure, progressively closing liquid outlet manual control valve, until gas transmission is in charge of occur liquid level.
This gas and oil separating plant is applicable to the offshore platform that gas production is large, Oil-gas Separation is difficult, separator treatment effeciency is low; This equipment can carry out degassed to individual well, also can carry out degassed on stream.
Claims (4)
1. an offshore oilfield gas and oil separating plant, it is characterized in that: comprise Oil-gas Separation Trunk Line, Oil-gas Separation Trunk Line by horizontally disposed entrance pipeline section, have a down dip arrange middle pipeline section and horizontally disposed outlet pipe section connect and compose successively, the port of entrance pipeline section is connected with oil transmission line, the port of outlet pipe section forms liquid-phase outlet, and liquid-phase outlet is connected with the entrance of follow-up oil water separator; Be respectively equipped with the first gas transmission vertically arranged to be in charge of to be in charge of with the second gas transmission in the front-end and back-end of middle pipeline section, the upper end that two gas transmissions are in charge of is connected on horizontally disposed gas transmission main, the end of gas transmission main is connected with elbow, and the port of upper elbow forms gas vent; Be separately installed with an autocontrol valve and a manual control valve in gas vent position and liquid-phase outlet position, outside the second gas transmission is in charge of, liquid level gauge be installed.
2. offshore oilfield gas and oil separating plant according to claim 1, is characterized in that: the angle that has a down dip of described middle pipeline section is 30 ° ~ 40 °.
3. offshore oilfield gas and oil separating plant according to claim 1, is characterized in that: the centre distance of described entrance pipeline section and outlet pipe section is 5m ~ 5.5m.
4. offshore oilfield gas and oil separating plant according to claim 1, is characterized in that: the ratio of the caliber that the caliber of described Oil-gas Separation Trunk Line is 14 inches ~ 16 inches, the first gas transmission is in charge of and the caliber that the second gas transmission is in charge of is 1:1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520669066.XU CN204973152U (en) | 2015-08-31 | 2015-08-31 | Offshore oil field oil -gas separation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520669066.XU CN204973152U (en) | 2015-08-31 | 2015-08-31 | Offshore oil field oil -gas separation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204973152U true CN204973152U (en) | 2016-01-20 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520669066.XU Expired - Fee Related CN204973152U (en) | 2015-08-31 | 2015-08-31 | Offshore oil field oil -gas separation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204973152U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106334346A (en) * | 2016-10-31 | 2017-01-18 | 中冶赛迪工程技术股份有限公司 | Composite pipe for conveying gas-liquid two-phase flow |
-
2015
- 2015-08-31 CN CN201520669066.XU patent/CN204973152U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106334346A (en) * | 2016-10-31 | 2017-01-18 | 中冶赛迪工程技术股份有限公司 | Composite pipe for conveying gas-liquid two-phase flow |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160120 Termination date: 20210831 |