CN112343550A - Shale oil test oil flowback stage ground processing integrated device and method - Google Patents
Shale oil test oil flowback stage ground processing integrated device and method Download PDFInfo
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- 239000003079 shale oil Substances 0.000 title claims abstract description 22
- 238000012360 testing method Methods 0.000 title claims abstract description 21
- 238000000034 method Methods 0.000 title claims abstract description 12
- 238000012545 processing Methods 0.000 title claims abstract description 11
- 239000003921 oil Substances 0.000 claims abstract description 68
- 239000010779 crude oil Substances 0.000 claims abstract description 45
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 40
- 239000007788 liquid Substances 0.000 claims description 116
- 230000003139 buffering effect Effects 0.000 claims description 72
- 239000012530 fluid Substances 0.000 claims description 48
- 238000011084 recovery Methods 0.000 claims description 38
- 239000010865 sewage Substances 0.000 claims description 21
- 239000004215 Carbon black (E152) Substances 0.000 claims description 8
- 229930195733 hydrocarbon Natural products 0.000 claims description 8
- 150000002430 hydrocarbons Chemical class 0.000 claims description 7
- 238000003672 processing method Methods 0.000 claims description 3
- 238000011144 upstream manufacturing Methods 0.000 claims description 3
- 238000009413 insulation Methods 0.000 claims description 2
- -1 LNG hydrocarbon Chemical class 0.000 claims 1
- 238000013461 design Methods 0.000 abstract description 5
- 238000010276 construction Methods 0.000 abstract description 4
- 230000018044 dehydration Effects 0.000 abstract description 4
- 238000006297 dehydration reaction Methods 0.000 abstract description 4
- 125000004122 cyclic group Chemical group 0.000 abstract description 3
- 238000011161 development Methods 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 69
- 230000010354 integration Effects 0.000 description 12
- 238000005265 energy consumption Methods 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 239000003949 liquefied natural gas Substances 0.000 description 4
- 230000008676 import Effects 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 238000013022 venting Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000009096 changqing Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/006—Production of coal-bed methane
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/01—Arrangements for handling drilling fluids or cuttings outside the borehole, e.g. mud boxes
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/06—Arrangements for treating drilling fluids outside the borehole
- E21B21/063—Arrangements for treating drilling fluids outside the borehole by separating components
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/06—Arrangements for treating drilling fluids outside the borehole
- E21B21/063—Arrangements for treating drilling fluids outside the borehole by separating components
- E21B21/067—Separating gases from drilling fluids
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/08—Controlling or monitoring pressure or flow of drilling fluid, e.g. automatic filling of boreholes, automatic control of bottom pressure
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/10—Valve arrangements in drilling-fluid circulation systems
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/25—Methods for stimulating production
- E21B43/26—Methods for stimulating production by forming crevices or fractures
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Abstract
The invention provides a shale oil test oil return stage ground processing integrated device and a method thereof. The invention can complete dehydration at well site, reduce the water content of crude oil to below 35%, then collect and transport or pull to ground system, and store and recycle the produced water in site in large well group to nearby fracturing well site. The device adopts skid-mounted design, and area is little, construction cycle is short, convenient operation, and the later stage can be according to actual demand, moves the device to other new development blocks cyclic utilization.
Description
Technical Field
The invention belongs to the technical field of crude oil treatment of shale oil fields, and particularly relates to a shale oil test oil flowback stage ground treatment integrated device and method.
Background
The shale oil of the Changqing oil field adopts a horizontal well fracturing development mode, and the produced substances at the initial open flow stage of the oil production well have high water content and high liquid amount (the maximum of about 100m of a single well)3And d), the initial stage time is long (up to 239 days), the water content of the produced material is high (50-100%), and the composition is complex (containing fracturing fluid, various medicaments and the like). The ground system is difficult to operate, a large amount of produced water cannot be recycled and directly conveyed to a downstream station, the load of the downstream station can be increased, and the efficiency of the gathering and conveying system is reduced.
Disclosure of Invention
The invention provides a shale oil test oil flowback stage ground treatment integrated device and a method, which aims to solve the problems that the conventional shale oil well site associated gas cannot be recovered and the heating energy consumption of a downstream station site is overlarge.
The technical scheme adopted by the invention is as follows:
a shale oil test oil return stage ground processing integrated device comprises a well site incoming liquid manifold, a well site return liquid processing integrated device, a buffering and pressurizing integrated device output pipeline, an emptying header manifold, a well site casing incoming gas manifold, an associated gas output header manifold, a water receiver and a dirty oil recovery integrated device;
the well site incoming liquid manifold is connected with the well site return liquid treatment integrated device through a pipeline, a filter and a first pressure reducing valve are sequentially arranged on the pipeline, a first valve and a second valve are respectively arranged at two ends of the filter, and the first valve, the filter and the second valve are connected in series and then connected with a third valve in parallel;
an outlet at the side end of the well site flowback liquid treatment integrated device is connected with the buffering and pressurization integrated device through a second pressure reducing valve, a side outlet of the buffering and pressurization integrated device is connected with an output pipeline of the buffering and pressurization integrated device, and a first insulating joint is arranged on the pipeline;
an outlet at the lower end of the well site flowback liquid treatment integrated device is communicated with a water storage device;
the other outlet at the lower end of the well site flowback liquid treatment integrated device is communicated with an inlet at the upper end of the sump oil recovery integrated device, and an outlet at the side surface of the sump oil recovery integrated device is communicated with an inlet of the buffering and pressurizing integrated device; the lower end outlet of the buffering and pressurizing integrated device is communicated with the inlet of the sump oil recovery integrated device;
an outlet at the upper end of the well site flowback fluid treatment integrated device is connected with a venting main manifold through a venting pipeline of the well site flowback fluid treatment integrated device, and a flame arrester is arranged on the venting main manifold;
the other outlet at the upper end of the well site flowback liquid treatment integrated device is connected with an associated gas output manifold;
the well site casing pipe inlet manifold outlet is divided into three pipelines, the first pipeline is connected with an associated gas output header manifold, and a sixth valve, a flowmeter and a seventh valve are sequentially arranged on the pipeline; the second pipeline is connected with the first pipeline in parallel, and a fifth valve is arranged on the second pipeline; and a fourth valve is arranged on the third pipeline, and the third pipeline is connected with the emptying header and the joint of the third pipeline and the emptying header is positioned at the upstream of the flame arrester.
The well site flowback liquid treatment integrated device is connected with the associated gas output manifold through an associated gas output pipeline of the well site flowback liquid treatment integrated device; and a second insulating joint is arranged on the associated gas output pipeline of the well site flowback liquid treatment integrated device.
And the associated gas output header pipe is provided with a third insulating joint, and an associated gas output pipeline of the well site flowback liquid treatment integrated device is communicated with an inlet end of the third insulating joint.
The well site returns flowing back and handles integrated device water outlet and the water receiver of well site and return flowing back integrated device and handle integrated device water piping connection through well site.
A well site flowback fluid treatment integrated device liquid inlet main inlet is arranged on one side of the well site flowback fluid treatment integrated device, a well site flowback fluid treatment integrated device main outlet is arranged on the other side of the well site flowback fluid treatment integrated device main inlet, and a well site flowback fluid treatment integrated device associated gas outlet and a well site flowback fluid treatment integrated device safety valve vent are arranged at the top of the well site flowback fluid treatment integrated device main inlet; the bottom is provided with a well site flowback liquid treatment integrated device sewage outlet and a well site flowback liquid treatment integrated device water outlet.
One side of the integrated device is provided with a crude oil main inlet of the integrated device, and the other side is provided with a main outlet of the integrated device; the top of the integrated buffering and pressurizing device is provided with an associated gas outlet, and the bottom of the integrated buffering and pressurizing device is provided with a sewage outlet.
And a main outlet of the well site return fluid treatment integrated device is connected with a crude oil main inlet of a buffering and pressurizing integrated device of the buffering and pressurizing integrated device through a second pressure reducing valve and a main outlet output pipeline of the well site return fluid treatment integrated device.
And a sewage outlet of the well site return liquid treatment integrated device is connected with an inlet of a sump oil recovery integrated device of the sump oil recovery integrated device through a sewage pipeline of the well site return liquid treatment integrated device.
A shale oil testing oil flowback stage ground processing method comprises the following specific steps: opening a well site incoming liquid manifold, a first valve, a filter, a second valve, a first pressure reducing valve and closing a third valve simultaneously, wherein crude oil enters the well site returning liquid treatment integrated device from a well site returning liquid treatment integrated device incoming liquid main inlet, flows out from a well site returning liquid treatment integrated device oil main outlet after treatment, enters the buffering and pressurizing integrated device through a well site returning liquid treatment integrated device output pipeline and a buffering and pressurizing integrated device crude oil main inlet after being depressurized by the second pressure reducing valve, flows out from the buffering and pressurizing integrated device crude oil main outlet after pressurization, and is transported or pulled to a ground system through a first insulating joint and a buffering and pressurizing integrated device output pipeline;
opening a wellsite casing gas inlet manifold, a sixth valve, a flowmeter and a seventh valve, closing the fifth valve, metering the casing gas, passing the wellsite casing gas associated gas output pipeline, entering an associated gas output header through a third insulating joint, and outputting the associated gas to a light hydrocarbon plant or an LNG hydrocarbon mixing plant.
The invention has the beneficial effects that:
the invention can complete dehydration at well site, reduce the water content of crude oil to below 35%, then collect or transport the crude oil to surface system, and store the produced water in site in large well group for reuse to nearby fracturing well site. The device adopts skid-mounted design, and area is little, construction cycle is short, and convenient operation can effectively realize shale oil well site associated gas and retrieve, reduces downstream station heating energy consumption, and popularization and application prospect is good.
The following will be further described with reference to the accompanying drawings.
Drawings
FIG. 1 is a schematic diagram of a shale oil test flowback stage ground treatment integration method.
In the figures, the reference numbers are: 1. a wellsite incoming fluid manifold; 2. a first valve; 3. a filter; 4. a second valve; 5. a first pressure reducing valve; 6. a third valve; 7. the well site returns the integrated device of liquid treatment; 8. a second pressure reducing valve; 9. a buffering and pressurizing integrated device; 10. a first insulating joint; 11. an output pipeline of the buffering and pressurizing integrated device; 12. a flame arrestor; 13. emptying a header pipe; 14. a second insulated joint; 15. a fourth valve; 16. a fifth valve; 17. well site casing incoming gas manifold; 18. a sixth valve; 19. a flow meter; 20. a seventh valve; 21. a third insulated joint; 22. associated gas output header pipe; 23. a water reservoir; 24. the sump oil is recovered and integrated into the device; 25. the well site returns the liquid and processes the integrated device and comes the liquid main import; 26. a main outlet of the well site flowback fluid treatment integrated device; 27. an associated gas outlet of the well site flowback liquid treatment integrated device; 28. a safety valve vent of the well site flowback fluid treatment integrated device; 29. a well site flowback fluid treatment integrated device drain outlet; 30. a water outlet of the well site flowback fluid treatment integrated device; 31. a crude oil main inlet of the buffering and pressurizing integrated device; 32. a crude oil main outlet of the buffering and pressurizing integrated device; 33. an associated gas outlet of the buffering and pressurizing integrated device; 34. a sewage discharge outlet of the integrated buffering and pressurizing device; 35. an associated gas output pipeline of the well site flowback liquid treatment integrated device; 36. emptying pipelines of the well site flowback fluid treatment integrated device; 37. a well site flowback fluid treatment integrated device sewage discharge pipeline; 38. an inlet of the sump oil recovery integrated device; 39. a well site flowback fluid treatment integrated device water pipeline; 40. a blowdown pipeline of the buffering and pressurizing integrated device; 41. an outlet pipeline of the sump oil recovery integrated device; 42. an emptying pipeline of the buffering and pressurizing integrated device; 43. a well site casing gas associated gas output pipeline; 44. a main outlet output pipeline of the well site flowback fluid treatment integrated device; 45. an outlet of the sump oil recovery integrated device; 46. an eighth valve; 47. a flowback fluid treatment device; 48. a thirteenth valve; 49. a tenth valve; 50. an eleventh valve; 51. a twelfth valve; 52. a ninth valve; 53. a first electrically operated valve; 54. separating the buffer tank; 55. a second electrically operated valve; 56. electrically operated valve III; 57. a single-screw pump I; 58. a third electrically operated valve; 59. a second flowmeter; 60. a single-screw pump II; 61. a fifth electrically operated valve; 62. a second flowmeter; 63. a non-leakage explosion-proof sump oil recovery device; 64. a fourteenth valve.
Detailed Description
Example 1:
in order to solve the problems that the conventional shale oil well site associated gas cannot be recovered and the heating energy consumption of a downstream station site is overlarge, the invention provides a shale oil test oil flowback stage ground treatment integrated device and method shown in figure 1.
A shale oil testing oil return stage ground processing integrated device comprises a well site incoming liquid manifold 1, a well site return liquid processing integrated device 7, a buffering and pressurizing integrated device 9, a buffering and pressurizing integrated device output pipeline 11, a emptying header manifold 13, a well site casing incoming gas manifold 17, an associated gas output header manifold 22, a water receiver 23 and a dirty oil recovery integrated device 24;
the wellsite incoming liquid manifold 1 is connected with the wellsite returning liquid treatment integrated device 7 through a pipeline, a filter 3 and a first pressure reducing valve 5 are sequentially arranged on the pipeline, a first valve 2 and a second valve 4 are respectively arranged at two ends of the filter 3, and a third valve 6 is connected in parallel after the first valve 2, the filter 3 and the second valve 4 are connected in series;
an outlet at the side end of the wellsite flowback liquid treatment integrated device 7 is connected with a buffering and pressurizing integrated device 9 through a second pressure reducing valve 8, a side outlet of the buffering and pressurizing integrated device 9 is connected with an output pipeline 11 of the buffering and pressurizing integrated device, and a first insulating joint 10 is arranged on the pipeline;
an outlet at the lower end of the well site flowback liquid treatment integrated device 7 is communicated with a water storage device 23;
the other outlet at the lower end of the well site flowback liquid treatment integrated device 7 is communicated with the inlet at the upper end of the sump oil recovery integrated device 24, and the outlet at the side surface of the sump oil recovery integrated device 24 is communicated with the inlet of the buffering and pressurizing integrated device 9; the outlet at the lower end of the buffering and pressurizing integrated device 9 is communicated with the inlet of the sump oil recovery integrated device 24;
an outlet at the upper end of the well site flowback liquid treatment integrated device 7 is connected with a discharge manifold 13 through a discharge pipeline 36 of the well site flowback liquid treatment integrated device, and a flame arrester 12 is arranged on the discharge manifold 13;
the other outlet at the upper end of the integrated well site flowback liquid treatment device 7 is connected with an associated gas output header 22;
the outlet of the well site casing gas inlet manifold 17 is divided into three pipelines, the first pipeline is connected with an associated gas output header 22, and a sixth valve 18, a flowmeter 19 and a seventh valve 20 are sequentially arranged on the pipelines; the second pipeline is connected with the first pipeline in parallel, and a fifth valve 16 is arranged on the second pipeline; and a fourth valve 15 is arranged on the third pipeline, and the third pipeline is connected with the emptying header 13 and the connection position is positioned at the upstream of the flame arrester 12.
A well site flowback fluid treatment integrated device incoming liquid main inlet 25 is arranged on one side of a well site flowback fluid treatment integrated device 7, a well site flowback fluid treatment integrated device main outlet 26 is arranged on the other side of the well site flowback fluid treatment integrated device 7, a well site flowback fluid treatment integrated device associated gas outlet 27 and a well site flowback fluid treatment integrated device safety valve vent 28 are arranged at the top of the well site flowback fluid treatment integrated device 7, and a well site flowback fluid treatment integrated device sewage outlet 29 and a well site flowback fluid treatment integrated device water outlet 30 are arranged at the bottom of the well site flowback fluid treatment integrated device. One side of buffering pressure boost integration integrated device 9 is equipped with buffering pressure boost integration integrated device crude oil and always imports 31, and the opposite side is equipped with buffering pressure boost integration integrated device crude oil and always exports 32, and the top of buffering pressure boost integration integrated device 9 is equipped with buffering pressure boost integration integrated device associated gas export 33, and the bottom is equipped with buffering pressure boost integration integrated device buffering pressure boost integration device drain 34. The upper portion of sump oil recovery integration device 24 is equipped with sump oil recovery integration device import 38, and one side of sump oil recovery integration device 24 is equipped with sump oil recovery integration device export 45. The wellsite casing gas inlet manifold 17 connected in sequence through the pipeline valve assembly is connected with the third insulated joint 21 and the associated gas output header 22 through a sixth valve 18, a flow meter 19, a seventh valve 20 and a wellsite casing associated gas output pipeline 43. The wellsite casing gas manifold 17 is provided with a fourth valve 15 connected to the flare header 13 via a line.
According to the invention, the well site flowback liquid treatment integrated device 7, the buffering pressurization integrated device 9 and the dirty oil recovery integrated device 24 which can be directly purchased in the market are matched with pipelines and valves to carry out the surface treatment of the shale oil test oil flowback stage, through the device, the dehydration is completed at the well site, the water content of the crude oil is reduced to below 35%, then the crude oil is collected and transported or pulled to a surface system, and the produced water is stored on site in a large well group and recycled to the nearby fracturing well site. This device adopts skid-mounted design, and area is little, construction cycle is short, and convenient operation can effectively realize shale oil well site associated gas and retrieve, reduces the heating energy consumption of low reaches station yard, and popularization and application prospect is good. The wellsite flowback liquid treatment integrated device 7, the buffering pressurization integrated device 9 and the sump oil recovery integrated device 24 in the invention are all the prior art, and further description is not provided in the invention.
In the present invention, the dirty oil recovery integrated device 24 is a leak-free explosion-proof dirty oil recovery integrated device. The WYH-series can be used.
The device provided by the invention is suitable for the production of the shale oil horizontal well with high pressure, large liquid amount fluctuation and high water content in the early stage, and the device can be moved to other newly developed blocks for cyclic utilization in the later stage according to actual requirements.
Example 2:
based on embodiment 1, in this embodiment, preferably, the wellsite flowback liquid treatment integrated device 7 and the associated gas output header 22 are connected through an associated gas output pipeline 35 of the wellsite flowback liquid treatment integrated device; and a second insulating joint 14 is arranged on an associated gas output pipeline of the well site flowback liquid treatment integrated device.
Preferably, a third insulating joint 21 is arranged on the associated gas output header 22, and an associated gas output pipeline 35 of the wellsite flowback liquid treatment integrated device is communicated with an inlet end of the third insulating joint 21.
Preferably, the wellsite flowback fluid treatment integrated unit water outlet 30 of the wellsite flowback fluid treatment integrated unit 7 is connected with the water reservoir 23 through the wellsite flowback fluid treatment integrated unit water line 39.
Preferably, one side of the wellsite flowback liquid treatment integrated device 7 is provided with a wellsite flowback liquid treatment integrated device incoming liquid main inlet 25, the other side of the wellsite flowback liquid treatment integrated device main outlet 26, and the top of the wellsite flowback liquid treatment integrated device is provided with a wellsite flowback liquid treatment integrated device associated gas outlet 27 and a wellsite flowback liquid treatment integrated device safety valve vent 28; the bottom of the integrated device is provided with a sewage outlet 29 of the integrated device for treating the well site flowback liquid and a water outlet 30 of the integrated device for treating the well site flowback liquid.
Preferably, a crude oil main inlet 31 of the buffering and pressurizing integrated device is arranged at one side of the buffering and pressurizing integrated device 9, and a crude oil main outlet 32 of the buffering and pressurizing integrated device is arranged at the other side of the buffering and pressurizing integrated device; the top of the integrated device 9 is provided with an outlet 33 of associated gas and the bottom is provided with a drain 34 of the integrated device.
Preferably, the wellsite flowback fluid treatment integrated unit main outlet 26 of the wellsite flowback fluid treatment integrated unit 7 is connected with the buffering pressurization integrated unit crude oil main inlet 31 of the buffering pressurization integrated unit 9 through the second pressure reducing valve 8 and the wellsite flowback fluid treatment integrated unit main outlet output pipeline 44.
Preferably, the wellsite flowback liquid treatment integrated device sewage outlet 29 of the wellsite flowback liquid treatment integrated device 7 is connected with the sump oil recovery integrated device inlet 38 of the sump oil recovery integrated device 24 through the wellsite flowback liquid treatment integrated device sewage pipeline 37.
The working process of the invention is as follows:
opening a well site incoming liquid manifold 1, a first valve 2, a filter 3, a second valve 4 and a first pressure reducing valve 5, closing a third valve 6, enabling crude oil to enter a well site returning liquid treatment integrated device 7 from a well site returning liquid treatment integrated device incoming liquid main inlet 25, enabling the crude oil to flow out of a well site returning liquid treatment integrated device oil main outlet 26 after treatment, enabling the crude oil to enter a buffer pressurization integrated device 9 through a well site returning liquid treatment integrated device output pipeline 44 and a buffer pressurization integrated device crude oil main inlet 31 after pressure reduction through a second pressure reducing valve 8, enabling the crude oil to flow out of a buffer pressurization integrated device crude oil main outlet 32 after pressurization, and carrying or pulling the crude oil to a ground system through a first insulating joint 10 and a buffer pressurization integrated device output pipeline 11.
Operation flow of the well site flowback fluid treatment integrated device 7: and opening an eighth valve 46, allowing the liquid to enter a return liquid treatment device 47, namely a return liquid treatment three-phase separator, allowing the treated low-water-content crude oil to enter a main outlet 26 of the integrated device for well field return liquid treatment through a ninth valve 52, allowing the associated gas to enter an associated gas outlet 27 of the integrated device for well field return liquid treatment through a tenth valve 49, allowing the vent gas to enter a safety valve vent 28 of the integrated device for well field return liquid treatment through an eleventh valve 50, allowing the treated produced water to enter a water outlet 30 of the integrated device for well field return liquid treatment through a twelfth valve 51, and allowing the treated dirty oil to enter a drain outlet 29 of the integrated device for well field return liquid treatment through a thirteenth valve 48.
The buffering and pressurizing integrated device 9 comprises a first electric valve 53, crude oil enters a separation buffer tank 54 and a second flowmeter 62, two pipelines are arranged between the crude oil entering the separation buffer tank 54 and the second flowmeter 62, and a second electric valve 55, a single-screw pump I57 and a third electric valve 58 are sequentially arranged on one pipeline; the other line is provided with a fourth electric valve 59, a single screw pump II 60 and a fifth electric valve 61 in sequence. The buffering and supercharging integrated device is also provided with a bypass valve 56, one side of a pipeline where the bypass valve 56 is located is connected with the first electric valve 53, and the other side of the pipeline is connected with a second flowmeter 62; the top of the integrated device 9 is provided with an outlet 33 for associated gas of the integrated device, and the bottom is provided with a drain 34 for the integrated device.
The operation process of the buffering and pressurizing integrated device 9 is as follows: opening a first electric valve 53, enabling the crude oil to enter a separation buffer tank 54, opening a second electric valve 55, a single-screw pump I57, a third electric valve 58 and a flowmeter II 62, and enabling the crude oil to enter a crude oil main outlet 32 of the buffer pressurization integrated device; the fourth electric valve 59, the single-screw pump two 60 and the fifth electric valve 61 are closed. The second electric valve 55, the single-screw pump I57, the third electric valve 58, the fourth electric valve 59, the single-screw pump II 60 and the fifth electric valve 61 are mutually standby, and when the single-screw pump I57 is overhauled, the second electric valve 55, the single-screw pump I57, the third electric valve 58, the fourth electric valve 59, the single-screw pump II 60 and the fifth electric valve 61 are closed. And vice versa.
The operation flow of the sump oil recovery integrated device 24 is as follows: the sump oil enters the non-leakage explosion-proof sump oil recovery device 63 through the inlet, and the sump oil enters the sump oil recovery integrated device outlet 45 through the fourteenth valve 64; the non-leakage explosion-proof dirty oil recovery device 63 is a conventional device, and will not be further described in this embodiment.
After being processed by the buffering and pressurizing integrated device 9, the sewage is discharged from a sewage outlet 29 of the wellsite return liquid processing integrated device and is connected to a sewage oil recovery integrated device inlet 38 of the sewage oil recovery integrated device 24 through a sewage pipeline 37 of the wellsite return liquid processing integrated device; the oil recovered by the sump oil recovery integrated device 24 enters the buffer pressurization integrated device 9 again for subsequent treatment. The associated gas processed by the buffering and pressurizing integrated device 9 passes through the associated gas outlet 33 of the buffering and pressurizing integrated device, the emptying pipeline 42 of the buffering and pressurizing integrated device, the flame arrester 12 and the emptying header 13. The dirty oil treated by the integrated buffering and pressurizing device 9 passes through the drain outlet 34 of the integrated buffering and pressurizing device and the drain pipeline 40 of the integrated buffering and pressurizing device to reach the inlet 38 of the integrated dirty oil recovery device 24.
The outlet water at the lower part of the well site flowback liquid treatment integrated device 7 is connected to the water storage device 23 through a well site flowback liquid treatment integrated device water outlet 30 and a well site flowback liquid treatment integrated device water pipeline 39.
If the filtration is not needed, the first valve 2, the filter 3, the second valve 4 and the third valve 6 are closed.
And opening a wellsite casing gas inlet manifold 17, a sixth valve 18, a flow meter 19 and a seventh valve 20, closing a fifth valve 16, metering the wellsite casing gas by a pipe valve assembly, and delivering the casing gas to a light hydrocarbon plant or an LNG (liquefied natural gas) mixed hydrocarbon plant through a wellsite casing gas associated gas output pipeline 43 and a third insulation joint 21 to an associated gas output header 22.
The safety valve vent 28 of the wellsite flowback liquid treatment integrated device 7 passes through a wellsite flowback liquid treatment integrated device vent pipeline 36, and the flame arrester 12 is connected to the vent manifold 13; the associated gas treated by the wellsite flowback liquid treatment integrated device 7 reaches the associated gas output header 22 from the wellsite flowback liquid treatment integrated device associated gas outlet 27 through the second insulating joint 14, the wellsite flowback liquid treatment integrated device associated gas output pipeline 35 and the third insulating joint 21.
Example 3:
on the basis of embodiment 1 or 2, the present embodiment provides a shale oil test oil flowback stage ground processing method, which includes the specific steps of: opening a well site incoming liquid manifold 1, a first valve 2, a filter 3, a second valve 4 and a first pressure reducing valve 5, closing a third valve 6, enabling crude oil to enter a well site returning liquid treatment integrated device 7 from a well site returning liquid treatment integrated device incoming liquid main inlet 25, enabling the crude oil to flow out of a well site returning liquid treatment integrated device oil main outlet 26 after treatment, enabling the crude oil to enter a buffer pressurization integrated device 9 through a well site returning liquid treatment integrated device output pipeline 44 and a buffer pressurization integrated device crude oil main inlet 31 after pressure reduction through a second pressure reducing valve 8, enabling the crude oil to flow out of a buffer pressurization integrated device crude oil main outlet 32 after pressurization, and carrying or pulling the crude oil to a ground system through a first insulating joint 10 and a buffer pressurization integrated device output pipeline 11;
and (3) opening the wellsite casing gas inlet manifold 17, the sixth valve 18, the flowmeter 19 and the seventh valve 20, closing the fifth valve 16, metering the casing gas, passing the wellsite casing gas associated gas outlet pipeline 43 through the wellsite casing gas, entering the associated gas outlet header 22 through the third insulating joint 21, and outputting the associated gas to a light hydrocarbon plant or an LNG hydrocarbon mixing plant.
The invention can complete dehydration at well site, reduce the water content of crude oil to below 35%, then collect and transport or pull to ground system, and store and recycle the produced water in site in large well group to nearby fracturing well site. The device adopts skid-mounted design, and area is little, construction cycle is short, convenient operation, and the later stage can be according to actual demand, moves the device to other new development blocks cyclic utilization.
The above examples are merely illustrative of the present invention and should not be construed as limiting the scope of the invention, which is intended to be covered by the claims and any design similar or equivalent to the scope of the invention. The apparatus structure and the method steps thereof, which are not described in detail in the present invention, are prior art and will not be further described in the present invention.
Claims (9)
1. The utility model provides a shale oil test returns and arranges stage ground processing integrated device which characterized in that: the system comprises a well site incoming liquid manifold (1), a well site returning liquid treatment integrated device (7), a buffering and pressurizing integrated device (9), a buffering and pressurizing integrated device output pipeline (11), a emptying header manifold (13), a well site casing incoming gas manifold (17), an associated gas output header manifold (22), a water storage device (23) and a sump oil recovery integrated device (24);
the well site incoming liquid manifold (1) is connected with the well site returning liquid treatment integrated device (7) through a pipeline, a filter (3) and a first pressure reducing valve (5) are sequentially arranged on the pipeline, a first valve (2) and a second valve (4) are respectively arranged at two ends of the filter (3), and a third valve (6) is connected in parallel after the first valve (2), the filter (3) and the second valve (4) are connected in series;
an outlet at the side end of the wellsite flowback liquid treatment integrated device (7) is connected with a buffering and pressurizing integrated device (9) through a second pressure reducing valve (8), a side outlet of the buffering and pressurizing integrated device (9) is connected with an output pipeline (11) of the buffering and pressurizing integrated device, and a first insulating joint (10) is arranged on the pipeline;
an outlet at the lower end of the well site flowback liquid treatment integrated device (7) is communicated with a water storage device (23);
the other outlet at the lower end of the well site flowback liquid treatment integrated device (7) is communicated with an inlet at the upper end of the sump oil recovery integrated device (24), and an outlet at the side surface of the sump oil recovery integrated device (24) is communicated with an inlet of the buffering and pressurizing integrated device (9); the lower end outlet of the buffering and pressurizing integrated device (9) is communicated with the inlet of the sump oil recovery integrated device (24);
an outlet at the upper end of the well site flowback fluid treatment integrated device (7) is connected with a emptying header (13) through an emptying pipeline (36) of the well site flowback fluid treatment integrated device, and a flame arrester (12) is arranged on the emptying header (13);
the other outlet at the upper end of the well site flowback liquid treatment integrated device (7) is connected with an associated gas output header pipe (22);
the outlet of the wellsite casing gas inlet manifold (17) is divided into three pipelines, the first pipeline is connected with an associated gas output header manifold (22), and a sixth valve (18), a flowmeter (19) and a seventh valve (20) are sequentially arranged on the pipelines; the second pipeline is connected with the first pipeline in parallel, and a fifth valve (16) is arranged on the second pipeline; and a fourth valve (15) is arranged on the third pipeline, the third pipeline is connected with a vent header (13), and the joint of the third pipeline and the vent header is positioned at the upstream of the flame arrester (12).
2. The integrated device for ground treatment in the oil test flowback stage of shale according to claim 1, wherein: the wellsite flowback liquid treatment integrated device (7) is connected with an associated gas output header pipe (22) through an associated gas output pipeline (35) of the wellsite flowback liquid treatment integrated device; and a second insulating joint (14) is arranged on an associated gas output pipeline of the well site flowback liquid treatment integrated device.
3. The shale oil test oil flowback stage ground processing integrated device of claim 1 or 2, characterized in that: and a third insulating joint (21) is arranged on the associated gas output header (22), and an associated gas output pipeline (35) of the wellsite flowback liquid treatment integrated device is communicated with the inlet end of the third insulating joint (21).
4. The integrated device for ground treatment in the oil test flowback stage of shale according to claim 1, wherein: and a water outlet (30) of the wellsite flowback liquid treatment integrated device (7) is connected with a water storage device (23) through a wellsite flowback liquid treatment integrated device water pipeline (39).
5. The integrated device for ground treatment in the oil test flowback stage of shale according to claim 1, wherein: a well site flowback fluid treatment integrated device incoming liquid main inlet (25) is arranged on one side of the well site flowback fluid treatment integrated device (7), a well site flowback fluid treatment integrated device main outlet (26) is arranged on the other side of the well site flowback fluid treatment integrated device, and a well site flowback fluid treatment integrated device associated gas outlet (27) and a well site flowback fluid treatment integrated device safety valve vent (28) are arranged at the top of the well site flowback fluid treatment integrated device; the bottom of the integrated device is provided with a sewage outlet (29) of the integrated device for treating the well site flowback liquid and a water outlet (30) of the integrated device for treating the well site flowback liquid.
6. The integrated device for ground treatment in the oil test flowback stage of shale according to claim 1, wherein: a crude oil main inlet (31) of the buffering and pressurizing integrated device is arranged at one side of the buffering and pressurizing integrated device (9), and a crude oil main outlet (32) of the buffering and pressurizing integrated device is arranged at the other side of the buffering and pressurizing integrated device; an associated gas outlet (33) is arranged at the top of the buffering and pressurizing integrated device (9), and a sewage draining outlet (34) is arranged at the bottom of the buffering and pressurizing integrated device.
7. The integrated device for ground treatment in the oil test flowback stage of shale according to claim 1, wherein: and a total outlet (26) of the wellsite return liquid treatment integrated device (7) is connected with a crude oil total inlet (31) of the buffering and pressurizing integrated device (9) through a second reducing valve (8) and a total outlet output pipeline (44) of the wellsite return liquid treatment integrated device.
8. The integrated device for ground treatment in the oil test flowback stage of shale according to claim 1, wherein: and a sewage outlet (29) of the wellsite flowback liquid treatment integrated device (7) is connected with a sewage oil recovery integrated device inlet (38) of the sewage oil recovery integrated device (24) through a sewage pipeline (37) of the wellsite flowback liquid treatment integrated device.
9. A shale oil testing oil flowback stage ground processing method is characterized in that: the method comprises the following specific steps: opening a well site incoming liquid manifold (1), a first valve (2), a filter (3), a second valve (4) and a first pressure reducing valve (5), simultaneously closing a third valve (6), enabling crude oil to enter a well site return liquid treatment integrated device (7) from a well site return liquid treatment integrated device incoming liquid main inlet (25), flow out of a well site return liquid treatment integrated device oil main outlet (26) after treatment, enter a buffering pressurization integrated device (9) through a well site return liquid treatment integrated device output pipeline (44) and a buffering pressurization integrated device crude oil main inlet (31) after being subjected to pressure reduction by a second pressure reducing valve (8), flow out of a buffering pressurization integrated device crude oil main outlet (32) after pressurization, and are transported or pulled to a ground system through a first insulating joint (10) and a buffering pressurization integrated device output pipeline (11);
opening a wellsite casing gas inlet manifold (17), a sixth valve (18), a flow meter (19) and a seventh valve (20), closing a fifth valve (16), and enabling the casing gas to pass through a wellsite casing gas associated gas output pipeline (43) after metering and a third insulation joint (21) to enter an associated gas output header (22) and be output to a light hydrocarbon plant or an LNG hydrocarbon mixing plant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011283469.2A CN112343550A (en) | 2020-11-17 | 2020-11-17 | Shale oil test oil flowback stage ground processing integrated device and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011283469.2A CN112343550A (en) | 2020-11-17 | 2020-11-17 | Shale oil test oil flowback stage ground processing integrated device and method |
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| CN112343550A true CN112343550A (en) | 2021-02-09 |
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| CN202011283469.2A Pending CN112343550A (en) | 2020-11-17 | 2020-11-17 | Shale oil test oil flowback stage ground processing integrated device and method |
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| CN (1) | CN112343550A (en) |
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