CN203743848U - Gathering and transportation system - Google Patents
Gathering and transportation system Download PDFInfo
- Publication number
- CN203743848U CN203743848U CN201420095637.9U CN201420095637U CN203743848U CN 203743848 U CN203743848 U CN 203743848U CN 201420095637 U CN201420095637 U CN 201420095637U CN 203743848 U CN203743848 U CN 203743848U
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- Prior art keywords
- oil
- water
- separator
- gas
- phases
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 80
- 239000000203 mixture Substances 0.000 claims abstract description 21
- 238000004519 manufacturing process Methods 0.000 claims abstract description 14
- 239000012071 phase Substances 0.000 claims description 87
- 239000003921 oil Substances 0.000 claims description 53
- 239000007789 gas Substances 0.000 claims description 38
- 239000000839 emulsion Substances 0.000 claims description 28
- 239000003381 stabilizer Substances 0.000 claims description 24
- 238000003860 storage Methods 0.000 claims description 11
- 239000010779 crude oil Substances 0.000 claims description 10
- 239000007792 gaseous phase Substances 0.000 claims description 10
- 230000008676 import Effects 0.000 claims description 10
- 239000003595 mist Substances 0.000 claims description 7
- 239000010865 sewage Substances 0.000 claims description 6
- 238000002347 injection Methods 0.000 claims description 4
- 239000007924 injection Substances 0.000 claims description 4
- 210000001364 upper extremity Anatomy 0.000 claims description 3
- 238000011161 development Methods 0.000 abstract description 8
- 229910000975 Carbon steel Inorganic materials 0.000 abstract description 7
- 239000010962 carbon steel Substances 0.000 abstract description 7
- 230000008901 benefit Effects 0.000 abstract description 3
- 238000005260 corrosion Methods 0.000 description 14
- 230000007797 corrosion Effects 0.000 description 13
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 10
- 238000000034 method Methods 0.000 description 5
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 5
- 235000017557 sodium bicarbonate Nutrition 0.000 description 5
- 238000012545 processing Methods 0.000 description 4
- 238000000926 separation method Methods 0.000 description 4
- 229910045601 alloy Inorganic materials 0.000 description 3
- 239000000956 alloy Substances 0.000 description 3
- 239000007864 aqueous solution Substances 0.000 description 3
- 238000005191 phase separation Methods 0.000 description 3
- 230000018044 dehydration Effects 0.000 description 2
- 238000006297 dehydration reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000003112 inhibitor Substances 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-N carbonic acid Chemical compound OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910017053 inorganic salt Inorganic materials 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
- 239000007762 w/o emulsion Substances 0.000 description 1
Abstract
The utility model discloses a gathering and transportation system which comprises an oil-gas-water triphase separator I and an oil-gas-water triphase separator II. A gas phase outlet of the oil-gas-water triphase separator I is communicated with a blow-down system, a water phase outlet of the oil-gas-water triphase separator I is communicated with a water production system, an oil phase outlet of the oil-gas-water triphase separator I is communicated with an inlet of the oil-gas-water triphase separator II, a gas phase outlet of the oil-gas-water triphase separator II is communicated with the blow-down system, a water phase outlet of the oil-gas-water triphase separator II is communicated with the water production system, and an oil phase outlet of the oil-gas-water triphase separator II is communicated with a seabed oil-gas-water mixture transportation pipeline. An offshore oilfield with a high CO2 corrosive medium content can realize oil-gas-water mixture transportation by the aid of a carbon steel seabed pipeline, investment of the seabed pipeline can be greatly reduced, and the economic benefit of oilfield development is improved. The gathering and transportation system can be applied to the related fields of land pipelines, city life pipelines and the like, and is wide in application prospect.
Description
Technical field
The utility model relates to a kind of gathering system.
Background technique
In marine oil and gas development of resources, submarine pipeline is the important component part of marine engineering facility.Submarine pipeline connects wellhead platform, central processing platform or floating production storage unit (FPSO).The Oilfield Group far away of adjusting the distance or gas field group develop jointly project, and pipeline is by the comprehensive platform or the gathering center platform that connect with first processing capacity.Because Offshore Units investment is large, operating cost is high, for reducing submarine pipeline investment, and oil, water mixed delivery or oil, gas, the water three-phase mixed transferrings of adopting more.Water and CO
2thereby co-existing in pipeline, Korrosionsmedium will corrode the accident that carbon steel piping existence causes oil gas field to stop production and affects environment.
The adoptable anti-corrosion measure of submarine pipeline internal corrosion control is divided into corrosion resistant alloy and changes corrosive environment two classes, mainly comprises: carbon steel liner corrosion resistant alloy (CRA) pipeline; Oil, gas carry out processed; Add pH stabilizer to control the pH value of logistics; Adopt carbon steel+internal corrosion allowance+corrosion inhibitor; Remove the methods such as the Korrosionsmedium in logistics.
Wherein, adopt carbon steel liner corrosion resistant alloy (CRA) pipeline; Oil, gas carry out processed, remove the Korrosionsmedium technical feasibility in logistics but invest greatly, and part offshore oilfield will can not be developed because investment exceedes its ability to bear.Add pH stabilizer, the pH value technology application of control logistics is subject to the restriction of stratum water character can not extensive use.If carbon steel+internal corrosion allowance+corrosion inhibitor technology does not take other measure to be difficult to ensure high containing CO
2the safe operation of the mixed transportation of oil and gas pipeline of medium in Life cycle, therefore, seeks a kind of complex art that reduces sea-bottom oil-gas water mixed delivery corrosive pipeline and is very important.
Model utility content
The purpose of this utility model is to provide a kind of gathering system, and the utility model gathering system can prevent the corrosion of sea-bottom oil-gas water mixed delivery pipeline, is convenient to offshore oil field development application.
A kind of gathering system provided by the utility model, it comprises three phases separator I and three phases separator II;
The gaseous phase outlet of described three phases separator I is connected with blowdown system, and water outlet is connected with water production system, and oil phase outlet is connected with the entrance of described three phases separator II;
The gaseous phase outlet of described three phases separator II is connected with described blowdown system, and water outlet is connected with described water production system, and oil phase outlet is for being connected with sea-bottom oil-gas water mixed delivery pipeline;
Described three phases separator I and described three phases separator II include a separator body, one sidewall of described separator body is provided with oil gas water three phase mixture inlet, the intrinsic top of described separator is provided with an import baffle plate, described import baffle plate is located near described oil gas water three phase mixture inlet end, and is provided with spacing between the lower edge of described import baffle plate and the bottom of described separator body; On the bottom of described separator body, be provided with overflow baffle in its 2/3 place, and described overflow baffle arranges away from described oil gas water three phase mixture inlet; Between the top of the upper limb of described overflow baffle and described separator body, be provided with spacing; On the bottom of described separator body, be respectively equipped with water outlet and oil phase outlet in the both sides of described overflow baffle, and the outlet of described water is near described oil gas water three phase mixture inlet end; The top of described separator body is provided with mist eliminator, and described mist eliminator is connected with a gaseous phase outlet.
In above-mentioned gathering system, described system also comprises emulsion stabilizer storage tank, and the outlet of described emulsion stabilizer storage tank is connected with the oil phase outlet pipe line of described three phases separator II by pipeline.
In above-mentioned gathering system, the oil phase of described three phases separator II exports the pipeline being connected with sea-bottom oil-gas water mixed delivery pipeline and is provided with spherical pig machine for serving ball.
In above-mentioned gathering system, the ingress of described three phases separator I is provided with multi-phase flowmeter.
In above-mentioned gathering system, the oil phase outlet pipe road of described three phases separator II is provided with crude oil pump.
In above-mentioned gathering system, the export pipeline of described emulsion stabilizer storage tank is provided with emulsion stabilizer injection pump.
In above-mentioned gathering system, the sidewall of described separator body is provided with manhole, and when assembly is installed or overhauled, personnel can enter in described separator body;
The solids such as the bottom of described separator body is provided with sewage draining exit, the sandstone of the interior sedimentation of described separator body can be discharged by described sewage draining exit.
While using the utility model, selected emulsion stabilizer can be inorganic salt type, the alkalescent WO emulsion stabilizer taking sodium bicarbonate as main component, as sodium bicarbonate aqueous solution, and then profit flows in pipe with the form of water in oil emulsion under the condition of pipe defeated pressure, temperature and time of delivery, to avoid existing of free water to produce corrosion to submerged pipeline.The mass concentration that described emulsion stabilizer adds is 0.75%～1%, but is not 0.75%, has considered that the emulsion that has added stabilizer can dewater up to standard under the dehydration conditions of central processing platform or floating production storage unit so simultaneously.Should in the defeated process of pipe, reach the stable target of emulsion, can not make again emulsion too stable, in order to avoid its dehydration difficulty in the time further processing simultaneously.
The utlity model has following advantage:
1, the utility model can make high containing CO
2the offshore oilfield of Korrosionsmedium adopts carbon steel submarine pipeline to realize oil-water mixed-transportation, can significantly reduce submarine pipeline investment, improves the economic benefit of oil field development.
2, the utility model is applicable to establish the wellhead platform+central platform of Oil-gas Separation or the oilfield development model of Floating Production treatment facility, in reducing submarine pipeline corrosive gas and the water yield, can reduce the area of platform, improve submarine pipeline internal corrosion environment, improve submerged pipeline operational reliability.Its mesolow separating step is for the multiple offshore oil field development projects of the anticorrosion successful Application of submarine pipeline, and low pressure separates, the also experimental verification applying in the Oilfield Development Engineering of the South Sea of WO emulsion stabilization technique.It is 15～20% that the utility model can be widely used in the stable aqueous rate of profit stable emulsion, manage the offshore oil field development of defeated distance in 10km, with low cost, has a extensive future.
3, in the situation that not rolling up equipment, carry out appropriate reconstruction by existing equipment, just can realize and reducing because of CO
2and the corrosion causing, cost is very cheap;
4, the utility model can be applicable to the relevant field such as terrestrial pipeline, urban life pipeline, has a extensive future.
Brief description of the drawings
Fig. 1 is the schematic diagram of the utility model gathering system.
Fig. 2 is the structural representation of three phases separator in the utility model gathering system
In figure, each mark is as follows:
1 three phases separator I, 2 three phases separator II, 3 blowdown systems, 4 water production systems, 5 crude oil pumps, 6 emulsion stabilizer storage tanks, 7 emulsion stabilizer injection pumps, 8 spherical pig machine for serving balls, 9 multi-phase flowmeters, 10 oil gas water three phase mixture inlets, 11 import baffle plates, 12 overflow baffles, 13 water outlets, 14 oil phase outlets, 15 mist eliminators, 16 gaseous phase outlets, 17 manholes, 18 sewage draining exits.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described further, but the utility model is not limited to following examples.
As shown in Figure 1, a kind of gathering system that the utility model provides comprises three phases separator I 1 and three phases separator II 2.The entrance of this three phases separator I 1 is connected with crude oil well head, and is being provided with multi-phase flowmeter 9 near this entry end, and so that crude oil is measured, the gaseous phase outlet of three phases separator I 1 is connected with blowdown system 3, so that separate the CO that contains obtaining
2gas phase carry out emptyingly, water outlet is connected with water production system 4, separates to reclaim the water obtaining, oil phase exports and is connected with the entrance of three phases separator II 2, carries out further oil gas water three phase separation.The gaseous phase outlet of this three phases separator II 2 is connected with blowdown system 3, so that separate the CO that contains obtaining
2gas phase carry out emptyingly, water outlet is connected with water production system 4, separates to reclaim the water obtaining, oil phase outlet is used for being connected with sea-bottom oil-gas water mixed delivery pipeline, and realizes the outer defeated of crude oil by crude oil pump 5.
As shown in Figure 2, three phases separator I 1 in the utility model gathering system and three phases separator II 2 include a separator body, one sidewall of this separator body is provided with oil gas water three phase mixture inlet 10, the intrinsic top of this separator is provided with an import baffle plate 11, this import baffle plate 11 is located at the one end near oil gas water three phase mixture inlet 10, and is provided with spacing between the lower edge of import baffle plate 11 and the bottom of separator body; On the bottom of this separator body, be provided with overflow baffle 12 in its 2/3 place, and this overflow baffle 12 is away from one end setting of oil gas water three phase mixture inlet 10, between the upper limb of this overflow baffle 12 and the top of separator body, is provided with spacing; On the bottom of separator body, be respectively equipped with water outlet 13 and oil phase outlet 14 in the both sides of overflow baffle 12, and water outlet 13 one end near oil gas water three phase mixture inlet 10; On the top of separator body, be provided with mist eliminator 15, this mist eliminator 15 is connected with a gaseous phase outlet 16; On the sidewall of separator body, be provided with manhole 17, when assembly is installed or overhauled, personnel can enter in described separator body; On the bottom of separator body, be provided with sewage draining exit 18, the solids such as the sandstone of the interior sedimentation of this separator body can be discharged by this sewage draining exit 18.
In the utility model, described gathering system also comprises emulsion stabilizer storage tank 6, the outlet of this emulsion stabilizer storage tank 6 is connected with the oil phase outlet pipe line of three phases separator II 2 by pipeline, this pipeline being connected is provided with emulsion stabilizer injection pump 7, to realize the conveying to emulsion stabilizer.
In the utility model, on the pipeline being connected with sea-bottom oil-gas water mixed delivery pipeline in three phases separator II 2, and be provided with spherical pig machine for serving ball 8 near one end of sea-bottom oil-gas water mixed delivery pipeline.
In conjunction with Fig. 1, using process of the present utility model is described.
As shown in Figure 1, three phases separator I 1 and three phases separator II 2 are installed at sea on platform, by the crude oil of well head output (CO in this crude oil
2quality percentage composition be 0.15%, the quality percentage composition of water is 90%) input in three phases separator I 1 and carry out oil gas water three phase separation, wherein the operation pressure in three phases separator I is 700kPaA, operating temperature is 85 DEG C.Separate and obtain containing CO through three phases separator I 1
2gas phase enter blowdown system 3 with emptying, the water that separation the obtains production system 4 of anhydrating, the moisture oil phase that separation obtains inputs to and in three phases separator II 2, carries out oil gas water three phase separation, and the quality percentage composition that wherein separates water in the moisture oil phase obtaining through this step is 30%.Operation pressure in three phases separator II 2 is 130kPaA, and operating temperature is 90 DEG C; Separate the CO that contains obtaining through three phases separator II 2
2gas phase carry out emptyingly, after measured, in the moisture oil phase obtaining after separation, the quality percentage composition of water is 15%, CO
2quality percentage composition be below 0.03%.At submarine pipeline entrance, to the aqueous solution that injects sodium bicarbonate in this moisture oil phase, wherein the quality percentage composition of sodium bicarbonate is 70%.
Amount and the experimental temperature of the WO emulsion stabilizer adding by variation, investigate experiment effect, and experimental result is as shown in table 1.Wherein " stablizing " state in table refers to that the solution of this oil and water still presents water in oil state, there is no separating out of free water in corresponding treatment conditions with in the defeated time of pipe; " deviating from 30% " in table refers to that the solution that records oil and water still presents the water in oil state of part in corresponding treatment conditions with in the defeated time of pipe, but has 30% free water to separate out.Can be learnt by data in table, the quality of emulsion stabilizer (sodium bicarbonate aqueous solution) is added concentration can not be lower than the i.e. mass content in the moisture oil phase of carrying of 0.75%().
In above-described embodiment, by adding emulsion stabilizer, make it form WO emulsion, stop separating out of free water in emulsion, meanwhile, make the CO of submarine pipeline Crude Oil
2content is less, and then greatly reduces the possibility that generates carbonic acid, can reduce the corrosion of submarine pipeline, can improve its working life.
The defeated stability experiment data of table 1 WO emulsion stabilizer pipe
Claims (7)
1. a gathering system, is characterized in that: described gathering system comprises three phases separator I and three phases separator II;
The gaseous phase outlet of described three phases separator I is connected with blowdown system, and water outlet is connected with water production system, and oil phase outlet is connected with the entrance of described three phases separator II;
The gaseous phase outlet of described three phases separator II is connected with described blowdown system, and water outlet is connected with described water production system, and oil phase outlet is for being connected with sea-bottom oil-gas water mixed delivery pipeline;
Described three phases separator I and described three phases separator II include a separator body, one sidewall of described separator body is provided with oil gas water three phase mixture inlet, the intrinsic top of described separator is provided with an import baffle plate, described import baffle plate is located near described oil gas water three phase mixture inlet end, and is provided with spacing between the lower edge of described import baffle plate and the bottom of described separator body; On the bottom of described separator body, be provided with overflow baffle in its 2/3 place, and described overflow baffle arranges away from described oil gas water three phase mixture inlet; Between the top of the upper limb of described overflow baffle and described separator body, be provided with spacing; On the bottom of described separator body, be respectively equipped with water outlet and oil phase outlet in the both sides of described overflow baffle, and the outlet of described water is near described oil gas water three phase mixture inlet end; The top of described separator body is provided with mist eliminator, and described mist eliminator is connected with a gaseous phase outlet.
2. system according to claim 1, is characterized in that: described system also comprises emulsion stabilizer storage tank, and the outlet of described emulsion stabilizer storage tank is connected with the oil phase outlet pipe line of described three phases separator II by pipeline.
3. system according to claim 1 and 2, is characterized in that: the oil phase of described three phases separator II exports the pipeline being connected with sea-bottom oil-gas water mixed delivery pipeline and is provided with spherical pig machine for serving ball.
4. system according to claim 1 and 2, is characterized in that: the ingress of described three phases separator I is provided with multi-phase flowmeter.
5. system according to claim 1 and 2, is characterized in that: the oil phase outlet pipe road of described three phases separator II is provided with crude oil pump.
6. system according to claim 2, is characterized in that: the export pipeline of described emulsion stabilizer storage tank is provided with emulsion stabilizer injection pump.
7. system according to claim 1 and 2, is characterized in that: the sidewall of described separator body is provided with manhole;
The bottom of described separator body is provided with sewage draining exit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420095637.9U CN203743848U (en) | 2014-03-04 | 2014-03-04 | Gathering and transportation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420095637.9U CN203743848U (en) | 2014-03-04 | 2014-03-04 | Gathering and transportation system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203743848U true CN203743848U (en) | 2014-07-30 |
Family
ID=51343649
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420095637.9U Expired - Lifetime CN203743848U (en) | 2014-03-04 | 2014-03-04 | Gathering and transportation system |
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| Country | Link |
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| CN (1) | CN203743848U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105604535A (en) * | 2016-02-26 | 2016-05-25 | 北京石油化工学院 | Offshore oilfield oil-gas-water gathering and transporting system and method |
| CN109869636A (en) * | 2019-03-26 | 2019-06-11 | 中国海洋石油集团有限公司 | A kind of outer output oil CO of reduction2The offshore platform process system and method for partial pressure |
| CN109869636B (en) * | 2019-03-26 | 2024-04-19 | 中国海洋石油集团有限公司 | Reducing CO of crude oil transported outwards2Partial pressure offshore platform process system and method |
-
2014
- 2014-03-04 CN CN201420095637.9U patent/CN203743848U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105604535A (en) * | 2016-02-26 | 2016-05-25 | 北京石油化工学院 | Offshore oilfield oil-gas-water gathering and transporting system and method |
| CN105604535B (en) * | 2016-02-26 | 2018-06-08 | 北京石油化工学院 | A kind of offshore oilfield oil gas water gathering system and method |
| CN109869636A (en) * | 2019-03-26 | 2019-06-11 | 中国海洋石油集团有限公司 | A kind of outer output oil CO of reduction2The offshore platform process system and method for partial pressure |
| CN109869636B (en) * | 2019-03-26 | 2024-04-19 | 中国海洋石油集团有限公司 | Reducing CO of crude oil transported outwards2Partial pressure offshore platform process system and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Co-patentee after: CNOOC RESEARCH INSTITUTE Co.,Ltd. Patentee after: CHINA NATIONAL OFFSHORE OIL Corp. Address before: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Co-patentee before: CNOOC Research Institute Patentee before: CHINA NATIONAL OFFSHORE OIL Corp. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140730 |