CN210367554U - Interface quick dehydrator and device for two-stage closed dehydration of oilfield produced liquid - Google Patents
Interface quick dehydrator and device for two-stage closed dehydration of oilfield produced liquid Download PDFInfo
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- CN210367554U CN210367554U CN201921255548.5U CN201921255548U CN210367554U CN 210367554 U CN210367554 U CN 210367554U CN 201921255548 U CN201921255548 U CN 201921255548U CN 210367554 U CN210367554 U CN 210367554U
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Abstract
The utility model relates to an oil field extraction liquid dewatering device technical field is a quick dehydrator in interface and device that is used for airtight dehydration of oil field extraction liquid two-stage process, and the former includes airtight cavity, and the interval is provided with the packer plate that divide into airtight cavity from the right side and a left side into liquid distribution cavity, coalescence material cavity and buffering cavity in airtight cavity, is filled with interface material in the coalescence material cavity, and it has the through-hole that the aperture is less than the interface material particle diameter to distribute on the packer plate. The utility model has the advantages of reasonable and compact structure, convenient to use compares in current dehydration technology, when adopting this quick dehydrator in interface to oil field extraction liquid to handle, and the treatment fluid that obtains can the flash separation when subsiding at follow-up process pressure to accelerate the dehydration process, shorten the dehydration time.
Description
Technical Field
The utility model relates to an oil field extraction liquid dewatering device technical field is a quick dehydrator in interface and device that is used for the airtight dehydration of oil field extraction liquid two-stage process.
Background
Along with the promotion of the crude oil extraction process, the produced liquid is gradually increased from low water content to high water content, and the emulsion type is complex and exists in (W/O) type and (O/W) type, and the stability of the emulsion is continuously enhanced, so that the treatment temperature of the ground gathering and transportation process is continuously increased, the concentration of the demulsifier is increased, the dehydration time is prolonged, the capacity of a thermochemical settling dehydration tank is expanded, and the management and operation cost is increased; even some produced fluids of fracture acidizing, binary combination flooding and ternary combination flooding can not be treated by adopting a conventional dehydration method.
The large-tank thermochemical settling dehydration process and the electrochemical dehydration process are mainly adopted for treating the oil field produced liquid at home and abroad, wherein the electrochemical demulsification is difficult to realize in the electrochemical treatment of the high-water-content produced liquid due to the fact that voltage is not applied frequently, and the problems of high dehydration temperature, high chemical-adding concentration of a demulsifier, long dehydration time and the like generally exist in the large-tank thermochemical settling. With the progress of science and technology, the existing crude oil dehydration technology comprises an ultrasonic wave dehydration technology, an electric pulse dehydration technology, a microwave dehydration technology and the like. Different technologies have different advantages and disadvantages and applicable conditions, and are reasonably used according to field conditions. Aiming at the problems of the crude oil dehydration technology, the research of the crude oil rapid dehydration technology is provided, the purpose of rapid dehydration of the crude oil containing water is achieved by using a new material and a new process, and meanwhile, compared with the traditional dehydration method, the purposes of energy conservation, consumption reduction and capability of treating complex produced liquid are achieved.
Disclosure of Invention
The utility model provides a quick dehydrator in interface and device that is used for airtight dehydration of oil field extraction liquid two-stage process has overcome above-mentioned prior art not enough, and it can effectively solve current extraction liquid dehydration technology and have the long problem of dehydration time.
One of the technical schemes of the utility model is realized through following measures: the utility model provides a quick dehydrator in interface for airtight dehydration of oil field extraction liquid two-stage, includes airtight cavity, is provided with at the interval in airtight cavity and divides airtight cavity from right side and left side into the packing board of liquid distribution chamber, coalescence material chamber and buffer chamber, is filled with interface material in the coalescence material chamber, distributes on the packing board and has the through-hole that the aperture is less than interface material particle diameter, is provided with the inlet on liquid distribution chamber right side, is provided with the liquid outlet on the left of the buffer chamber.
The following is a further optimization or/and improvement of one of the above technical solutions of the present invention:
the top of the closed cavity corresponding to the right side of the coalescent material chamber is provided with a filler inlet communicated with the coalescent material chamber, and the bottom of the closed cavity corresponding to the left side of the coalescent material chamber is provided with a filler outlet communicated with the coalescent material chamber.
And a pressure transmitter interface is arranged on the closed cavity corresponding to the liquid distribution cavity, and a pressure transmitter interface is arranged on the closed cavity corresponding to the buffer cavity.
The second technical scheme of the utility model is realized through following measure: a device comprises at least two lifting pumps and at least one interface quick dehydrator for oil field produced liquid two-stage closed dehydration, wherein the outlet of one lifting pump is communicated with a first pipeline, the outlet side of the first pipeline is communicated with the liquid inlet of each interface quick dehydrator for oil field produced liquid two-stage closed dehydration through a first branch pipeline, and the outlets of the other lifting pumps are communicated with the first pipeline far away from the outlet side of the first pipeline through a second pipeline; the liquid outlet of each interface quick dehydrator for the two-stage closed dehydration of the oilfield produced liquid is respectively communicated with a liquid outlet pipeline, and valves are connected in series on the second pipeline, the liquid outlet pipeline, the first branch pipeline and the first pipeline between the second pipeline and the outlet of the lifting pump.
The following is further optimization or/and improvement of the second technical scheme of the utility model:
the device also comprises a washing pump, wherein an outlet of the washing pump is communicated with a filler inlet of each interface quick dehydrator used for the two-stage closed dehydration of the oil field produced liquid through a washing feeding pipeline respectively, a backwashing water inlet pipeline is communicated between the outlet of the washing pump and the filler outlet of each interface quick dehydrator used for the two-stage closed dehydration of the oil field produced liquid, a backwashing water outlet pipeline is communicated with the filler inlet of each interface quick dehydrator used for the two-stage closed dehydration of the oil field produced liquid, a washing discharging pipeline is communicated with the filler outlet of each interface quick dehydrator used for the two-stage closed dehydration of the oil field produced liquid, and valves are connected in series on the washing feeding pipeline, the backwashing water outlet pipeline, the washing discharging pipeline and the backwashing water inlet pipeline; pressure transmitters are fixedly arranged on the pressure transmitter interfaces corresponding to the liquid distribution chamber and the closed cavity.
The closed cavity is in a left bottom and right high-inclination shape, and the included angle between the bottom end of the closed cavity and the horizontal line is an acute angle.
The included angle between the bottom end of the closed cavity and the horizontal line is 20-25 degrees.
The oil field extraction liquid two-section closed dehydration device comprises a prying seat, and an interface quick dehydrator, a lifting pump and a material washing pump which are all fixedly arranged on the prying seat.
The number of the interface quick dehydrators for the two-stage closed dehydration of the oil field produced liquid is more than two, and the interface quick dehydrators for the two-stage closed dehydration of the oil field produced liquid are fixedly arranged on the prying seat in an up-down arrangement mode.
The utility model has the advantages of reasonable and compact structure, convenient to use compares in current dehydration technology, when adopting this quick dehydrator in interface to oil field extraction liquid to handle, and the treatment fluid that obtains can the flash separation when subsiding at follow-up process pressure to accelerate the dehydration process, shorten the dehydration time.
Drawings
Fig. 1 is a schematic view of a partially cut-away and enlarged structure of a front view of embodiment 1 of the present invention.
Fig. 2 is a schematic top view of embodiment 2 of the present invention.
Fig. 3 is a schematic front view structure diagram of embodiment 2 of the present invention.
The codes in the figures are respectively: the device comprises a closed cavity 1, a liquid distribution cavity 2, a coalescing material cavity 3, a buffer cavity 4, a sealing partition plate 5, a liquid inlet 6, a liquid outlet 7, a filler inlet 8, a filler outlet 9, a pressure transmitter interface 10, a lift pump 11, a first pipeline 12, a first branch pipeline 13, a second pipeline 14, a liquid outlet pipeline 15, a washing pump 16, a washing feed pipeline 17, a backwash water inlet pipeline 18, a backwash water outlet pipeline 19, a washing discharge pipeline 20 and an included angle alpha.
Detailed Description
The utility model discloses do not receive the restriction of following embodiment, can be according to the utility model discloses a technical scheme and actual conditions determine concrete implementation.
In the present invention, for convenience of description, the description of the relative position relationship of the components is described according to the layout mode of the attached drawing 1 in the specification, such as: the positional relationship of front, rear, upper, lower, left, right, etc. is determined in accordance with the layout direction of fig. 1 of the specification.
The invention will be further described with reference to the following examples and drawings:
example 1: as shown in the attached drawing 1, the interface rapid dehydrator for the two-section closed dehydration of the oilfield produced fluid comprises a closed cavity 1, wherein a packing plate 5 which divides the closed cavity 1 into a fluid distribution chamber 2, a coalescence material chamber 3 and a buffer chamber 4 from the right to the left is arranged in the closed cavity 1 at intervals, the coalescence material chamber 3 is filled with interface materials, through holes with the aperture smaller than the particle size of the interface materials are distributed on the packing plate 5, a fluid inlet 6 is arranged on the right side of the fluid distribution chamber 2, and a fluid outlet 7 is arranged on the left side of the buffer chamber 4.
The interface material filled in the coalescence material chamber 3 is the interface material for dehydrating the oil field produced liquid, which is disclosed in Chinese patent documents with the application number of 2018107141259, the application date of 2018.06.29 and the name of the interface material for dehydrating the oil field produced liquid, a preparation method and application thereof.
The interface material surface has interface destruction characteristics, so that produced liquid is forced to change flow speed and direction continuously when flowing through the interface material surface, collision and coalescence probability of water drops and oil drops and water drops in the produced liquid is increased, and countless fine water drops are adsorbed and wetted continuously by the interface material and finally aggregated into large particle size to be separated out quickly. The interface material accumulated in the coalescing material chamber 3 further increases the collision and coalescence probability of water droplets and oil droplets in the produced fluid.
The oil field produced liquid (water-containing crude oil) after the first-stage treatment enters a liquid distribution chamber 2 through a liquid inlet 6, then passes through a through hole of a sealing baffle plate 5 and enters a coalescent material chamber 3, emulsion breaking and small water drop coalescence of emulsion in the oil field produced liquid are realized through the action of an interface material in the coalescent material chamber 3, the oil field produced liquid (water-containing crude oil) is discharged out of a closed cavity 1 through a liquid outlet 7 of a buffer chamber 4 after the coalescent and emulsion breaking treatment of the coalescent material chamber 3, and the produced liquid after being treated by an interface rapid dehydrator (hereinafter, referred to as an interface rapid dehydrator for short) for the second-stage closed dehydration of the oil field produced liquid enters a pressure settling tank in the subsequent process for settling treatment, so that the oil-water separation speed is remarkably.
Therefore, compared with the existing dehydration process, when the interface rapid dehydrator is used for processing the oilfield produced fluid, the oil and water can be rapidly separated when the obtained processing fluid is settled under the pressure of the subsequent working procedure, so that the dehydration process is accelerated.
On-site tests prove that the crude oil containing water after the action of the interface quick dehydrator enters a pressure settling tank for settling, the crude oil is settled for 4min in the pressure settling tank according to indoor tests and on-site pilot tests, and the water content of an oil outlet of the pressure settling tank is less than 0.5 percent (mass percentage), so that the oil delivery index is met.
The interface rapid dehydrator for the two-section closed dehydration of the oilfield produced fluid can be further optimized or/and improved according to the actual needs:
as shown in fig. 1, the top of the closed cavity 1 corresponding to the right side of the coalescent material chamber 3 is provided with a filler inlet 8 communicated with the coalescent material chamber 3, and the bottom of the closed cavity 1 corresponding to the left side of the coalescent material chamber 3 is provided with a filler outlet 9 communicated with the coalescent material chamber 3.
The filler inlet 8 and the filler outlet 9 are arranged not only for filling the filler, but also as an inlet and outlet passage for backwashing the coalescing material chamber 3.
As shown in fig. 1, a pressure transmitter interface 10 is arranged on the closed cavity 1 corresponding to the liquid distribution chamber 2, and a pressure transmitter interface 10 is arranged on the closed cavity 1 corresponding to the buffer chamber 4.
The pressure transmitters are arranged at the two pressure transmitter interfaces 10, the pressure of the inlet and the outlet is monitored in real time, and the interface material can be cleaned by a backwashing process when the pressure difference of the inlet and the outlet has an ascending trend in the operation process of the interface rapid dehydrator.
Example 2: as shown in the attached drawings 2 to 3, the device comprises at least two lifting pumps 11 and at least one interface quick dehydrator for oil field produced fluid two-stage closed dehydration, wherein the outlet of one lifting pump 11 is communicated with a first pipeline 12, the outlet side of the first pipeline 12 is communicated with the liquid inlet 6 of each interface quick dehydrator for oil field produced fluid two-stage closed dehydration through a first branch pipeline 13, and the outlets of the other lifting pumps 11 are communicated with the first pipeline 12 far away from the outlet side of the first pipeline 12 through a second pipeline 14; the liquid outlet 7 of each interface rapid dehydrator for the two-section closed dehydration of the oilfield produced liquid is respectively communicated with a liquid outlet pipeline 15, and valves are connected in series on the second pipeline 14, the liquid outlet pipeline 15, the first branch pipeline 13 and the first pipeline 12 between the second pipeline 14 and the outlet of the lift pump 11.
The working operation state of each interface quick dehydrator is controlled by controlling the valve switch on the first branch pipeline 13 of each interface quick dehydrator, namely when the valve on the first branch pipeline 13 of any interface quick dehydrator is opened, the oilfield produced liquid can enter the interface quick dehydrator for treatment, otherwise, the oilfield produced liquid cannot enter the interface quick dehydrator.
The oilfield produced fluid after the first-stage treatment is lifted to the interface rapid dehydrator through the lifting pump 11 to be subjected to emulsion breaking and coalescence treatment, and the treated fluid obtained after the treatment is easier to separate oil from water in the subsequent sedimentation process, so that the oil-water separation speed is accelerated, the crude oil dehydration time is greatly shortened, and the second-stage dehydration temperature is reduced, thereby reducing the oilfield production cost and realizing the crude oil closed treatment.
The rapid interface dehydrator, the lift pump 11, a matched pipe network and the like are used in a matched mode, rapid demulsification and rapid coalescence of the crude oil containing water are achieved, oil and water can be separated more rapidly in the subsequent sedimentation process, and the rapid interface dehydrator, the lift pump and the matched pipe network have the advantages of being safe, reliable and good in dehydration effect.
The device can be further optimized or/and improved according to actual needs:
as shown in the attached figures 2 to 3, the device also comprises a washing pump 16, wherein an outlet of the washing pump 16 is communicated with a filler inlet 8 of each interface rapid dehydrator for the two-stage closed dehydration of the oilfield produced fluid through a washing feed pipeline 17, a backwashing water inlet pipeline 18 is communicated between the outlet of the washing pump 16 and a filler outlet 9 of each interface rapid dehydrator for the two-stage closed dehydration of the oilfield produced fluid, a backwashing water outlet pipeline 19 is communicated with a filler inlet 8 of each interface rapid dehydrator for the two-stage closed dehydration of the oilfield produced fluid, a washing discharge pipeline 20 is communicated with a filler outlet 9 of each interface rapid dehydrator for the two-stage closed dehydration of the oilfield produced fluid, and valves are connected in series on the washing feed pipeline 17, the backwashing water outlet pipeline 19, the washing discharge pipeline 20 and the backwashing water inlet pipeline 18; pressure transmitters are fixedly arranged on the pressure transmitter interfaces 10 corresponding to the liquid distribution chamber 2 and the closed cavity 1.
The inlet and outlet pressures of each interface rapid dehydrator are monitored in real time through pressure transmitters at a liquid inlet 6 and a liquid outlet 7 of each interface rapid dehydrator, the inlet and outlet pressures are calculated by a PLC and then fed back to a central control room, and if the inlet and outlet pressure difference exceeds a set index, an alarm is given to prompt that interface materials need to be cleaned. In the operation process, when the pressure difference between the inlet and the outlet tends to rise, the interface material in the coalescence material chamber 3 can be cleaned by a back washing process.
The back washing process of any interface rapid dehydrator is independent from the coalescence demulsification treatment of the other interface rapid dehydrators, and the coalescence demulsification treatment is not influenced by the back washing process, and the method comprises the following steps:
when the feedback information of the pressure transmitter on a certain interface quick dehydrator prompts that the interface materials need to be cleaned, backwashing is carried out: closing valves on a first branch pipeline 13 and a liquid outlet pipeline 15 communicated with the interface quick dehydrator, stopping liquid feeding, then opening valves on a backwashing water inlet pipeline 18 and a backwashing water outlet pipeline 19, inputting clear water into the backwashing water inlet pipeline 18 through a material washing pump 16, pumping the clear water into the coalescent material chamber 3 from a filler outlet 9 of the interface quick dehydrator, washing the interface material, discharging the washing water from the filler outlet 9 into a backwashing water outlet pipeline 19, collecting the discharged backwashing water into a washing tank, closing the valves on the backwashing water inlet pipeline 18 and the backwashing water outlet pipeline 19 when the backwashing interface material has poor effect, opening the valves on the washing inlet pipeline 17 and the washing outlet pipeline 20, discharging the interface material in the coalescent material chamber 3 through the washing outlet pipeline 20, feeding the interface material into the washing tank for washing, and flushing the interface material through the filler inlet 8, the interface material in the coalescent material chamber 3 is flushed out completely, then a pore plate is arranged at the filler outlet 9 to prevent the subsequently loaded interface material from entering the communicated pipeline, and after the interface material is cleaned by a cleaning tank, the interface material is loaded into the coalescent material chamber 3 through a cleaning feed pipeline 17 by a cleaning pump 16 to complete the cleaning operation.
Through backwashing and cleaning, the use effect and the service life of the interface quick dehydrator can be ensured, the crude oil treatment efficiency of the oil field centralized treatment station is improved, and the production cost and the environmental pollution are reduced.
The wash pump 16 may use a flexible low shear particle pump to further clean the interface material while it is being transported.
According to the requirement, the sealed cavity 1 is inclined at a high angle from the left bottom to the right, and an included angle a between the bottom end of the sealed cavity 1 and a horizontal line is an acute angle. Therefore, the fluid can be uniformly distributed in the buffer chamber 4, and the interface material can be favorably interfered in oilfield produced fluid.
An angle α between the bottom end of the sealed cavity 1 and the horizontal line is 20 to 25 degrees, as required.
Under the inclination angle, when the crude oil containing water is treated by the interface quick dehydrator, the oil-water separation effect is the best, and the formed oil-water flow state is more stable.
According to the requirements, the device also comprises a prying seat, an interface quick dehydrator, a lifting pump 11 and a material washing pump 16 which are used for the two-stage closed dehydration of the oilfield produced liquid, and all the components are fixedly arranged on the prying seat.
According to the requirements, the number of the interface quick dehydrators for the two-stage closed dehydration of the oilfield produced liquid is more than two, and the interface quick dehydrators for the two-stage closed dehydration of the oilfield produced liquid are fixedly arranged on the prying seat in an up-down arrangement mode. Therefore, the prying seat is more compact in structure and higher in space utilization rate.
Above technical feature constitutes the utility model discloses a best embodiment, it has stronger adaptability and best implementation effect, can increase and decrease unnecessary technical feature according to actual need, satisfies the demand of different situation.
Claims (10)
1. The utility model provides a quick dehydrator of interface for airtight dehydration of oil field extraction liquid two-stage process, its characterized in that includes airtight cavity, is provided with at the interval in airtight cavity and divides airtight cavity into the packing board of liquid distribution chamber, coalescence material cavity and buffer chamber from right side and left side, is filled with interface material in the coalescence material cavity, and it has the through-hole that the aperture is less than interface material particle diameter to distribute on the packing board, is provided with the inlet on liquid distribution chamber right side, is provided with the liquid outlet on the left of the buffer chamber.
2. The interfacial rapid dehydrator for oilfield produced fluid two-stage closed dehydration according to claim 1, wherein the top of the closed cavity corresponding to the right side of the coalescent material chamber is provided with a filler inlet communicated with the coalescent material chamber, and the bottom of the closed cavity corresponding to the left side of the coalescent material chamber is provided with a filler outlet communicated with the coalescent material chamber.
3. The interface rapid dehydrator for oilfield produced fluid two-stage closed dehydration according to claim 1 or 2, wherein the closed cavity corresponding to the fluid distribution chamber is provided with a pressure transmitter interface, and the closed cavity corresponding to the buffer chamber is provided with a pressure transmitter interface.
4. An apparatus comprising the interface rapid dehydrator for the two-stage closed dehydration of the oil field produced fluid according to any one of claims 1 to 3, characterized by comprising at least two lift pumps and at least one interface rapid dehydrator for the two-stage closed dehydration of the oil field produced fluid, wherein the outlet of one lift pump is communicated with a first pipeline, the outlet side of the first pipeline is communicated with the liquid inlet of each interface rapid dehydrator for the two-stage closed dehydration of the oil field produced fluid through a first branch pipeline, and the outlets of the other lift pumps are communicated with the first pipeline far away from the outlet side of the first pipeline through a second pipeline; the liquid outlet of each interface quick dehydrator for the two-stage closed dehydration of the oilfield produced liquid is respectively communicated with a liquid outlet pipeline, and valves are connected in series on the second pipeline, the liquid outlet pipeline, the first branch pipeline and the first pipeline between the second pipeline and the outlet of the lifting pump.
5. The device according to claim 4, characterized by further comprising a washing pump, wherein an outlet of the washing pump is communicated with a filler inlet of each interface rapid dehydrator for the two-stage closed dehydration of the oil field produced fluid through a washing feed pipeline respectively, a backwashing water inlet pipeline is communicated between the outlet of the washing pump and the filler outlet of each interface rapid dehydrator for the two-stage closed dehydration of the oil field produced fluid, a backwashing water outlet pipeline is communicated with the filler inlet of each interface rapid dehydrator for the two-stage closed dehydration of the oil field produced fluid, a washing discharge pipeline is communicated with the filler outlet of each interface rapid dehydrator for the two-stage closed dehydration of the oil field produced fluid, and valves are connected in series on the washing feed pipeline, the backwashing water outlet pipeline, the washing discharge pipeline and the backwashing water inlet pipeline; pressure transmitters are fixedly arranged on the pressure transmitter interfaces corresponding to the liquid distribution chamber and the closed cavity.
6. The device according to claim 4 or 5, wherein the closed cavity is inclined from left to right, and the bottom of the closed cavity forms an acute angle with the horizontal line.
7. The apparatus of claim 6, wherein the bottom end of the sealed chamber is at an angle of 20 to 25 degrees to the horizontal.
8. The device of claim 4, 5 or 7, further comprising a prying seat, wherein the interface quick dehydrator, the lifting pump and the washing pump for the two-stage closed dehydration of the oilfield produced fluid are all fixedly arranged on the prying seat.
9. The device of claim 6, further comprising a prying seat, wherein the interface quick dehydrator, the lifting pump and the material washing pump for the two-stage closed dehydration of the oilfield produced fluid are all fixedly arranged on the prying seat.
10. The device of claim 9, wherein the number of the interface quick dehydrators for the two-stage closed dehydration of the oil field produced fluid is more than two, and the two or more interface quick dehydrators for the two-stage closed dehydration of the oil field produced fluid are fixedly arranged on the prying seat in an up-down arrangement mode.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921255548.5U CN210367554U (en) | 2019-08-05 | 2019-08-05 | Interface quick dehydrator and device for two-stage closed dehydration of oilfield produced liquid |
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| CN201921255548.5U CN210367554U (en) | 2019-08-05 | 2019-08-05 | Interface quick dehydrator and device for two-stage closed dehydration of oilfield produced liquid |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112282726A (en) * | 2020-11-02 | 2021-01-29 | 中国石油天然气集团有限公司 | External coalescence rectifying device for oilfield produced liquid and treatment method |
| CN112375589A (en) * | 2021-01-12 | 2021-02-19 | 森诺科技有限公司 | Use method of inclined covering pressing electric degassing device |
-
2019
- 2019-08-05 CN CN201921255548.5U patent/CN210367554U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112282726A (en) * | 2020-11-02 | 2021-01-29 | 中国石油天然气集团有限公司 | External coalescence rectifying device for oilfield produced liquid and treatment method |
| CN112375589A (en) * | 2021-01-12 | 2021-02-19 | 森诺科技有限公司 | Use method of inclined covering pressing electric degassing device |
| CN112375589B (en) * | 2021-01-12 | 2021-04-13 | 森诺科技有限公司 | Use method of inclined covering pressing electric degassing device |
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