CN104533359A - Same-well reinjection water injection process pipe column and method for exploiting high-pour-point oil - Google Patents
Same-well reinjection water injection process pipe column and method for exploiting high-pour-point oil Download PDFInfo
- Publication number
- CN104533359A CN104533359A CN201410776197.8A CN201410776197A CN104533359A CN 104533359 A CN104533359 A CN 104533359A CN 201410776197 A CN201410776197 A CN 201410776197A CN 104533359 A CN104533359 A CN 104533359A
- Authority
- CN
- China
- Prior art keywords
- water
- injection
- well
- electric submersible
- pump
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 116
- 238000002347 injection Methods 0.000 title claims abstract description 83
- 239000007924 injection Substances 0.000 title claims abstract description 83
- 238000000034 method Methods 0.000 title claims abstract description 22
- 239000012530 fluid Substances 0.000 claims abstract description 10
- 239000010410 layer Substances 0.000 claims description 34
- 238000003306 harvesting Methods 0.000 claims description 33
- 238000012360 testing method Methods 0.000 claims description 24
- 210000002445 nipple Anatomy 0.000 claims description 10
- 238000012545 processing Methods 0.000 claims description 10
- 238000009533 lab test Methods 0.000 claims description 9
- 238000004519 manufacturing process Methods 0.000 claims description 9
- 239000011229 interlayer Substances 0.000 claims description 7
- 238000004140 cleaning Methods 0.000 claims description 6
- 238000011010 flushing procedure Methods 0.000 claims description 4
- 238000012544 monitoring process Methods 0.000 claims description 3
- 238000005070 sampling Methods 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 6
- 238000010438 heat treatment Methods 0.000 abstract description 3
- 238000011084 recovery Methods 0.000 abstract description 3
- 238000003860 storage Methods 0.000 abstract description 3
- 230000005540 biological transmission Effects 0.000 abstract 1
- 238000010276 construction Methods 0.000 abstract 1
- 239000003673 groundwater Substances 0.000 abstract 1
- 238000003780 insertion Methods 0.000 abstract 1
- 230000037431 insertion Effects 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 54
- 238000004458 analytical method Methods 0.000 description 4
- 230000002595 cold damage Effects 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 230000005484 gravity Effects 0.000 description 3
- 238000001556 precipitation Methods 0.000 description 2
- 239000002918 waste heat Substances 0.000 description 2
- 241000251468 Actinopterygii Species 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 235000020681 well water Nutrition 0.000 description 1
- 239000002349 well water Substances 0.000 description 1
Classifications
-
- 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
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
- E21B43/20—Displacing by water
-
- 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
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
- E21B43/24—Enhanced recovery methods for obtaining hydrocarbons using heat, e.g. steam injection
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
The invention provides a co-well reinjection water injection process pipe column and a method for exploiting high pour-point oil, wherein the co-well reinjection water injection process pipe column comprises an oil pipe (1), an inverted electric submersible pump (2) and a shaft setting unit (4) which are sequentially connected from top to bottom, the inverted electric submersible pump (2) comprises a motor (21), a pump discharge port (23) and a centrifugal pump (24) which are sequentially connected from top to bottom, and an insertion pipe (34) is arranged between the centrifugal pump (24) and the shaft setting unit (4). The method for exploiting the high-pour-point oil fully utilizes the terrestrial heat, realizes hot water flooding exploitation, saves the ground investment and improves the oil field recovery ratio; the underground reinjection in the same well is realized, and the heat energy loss caused by the storage and long-distance transmission of the injected water is effectively avoided; after the water drive takes effect, the temperature of produced fluid can be improved, and a shaft heating viscosity reduction mode is cancelled or changed; the ground water injection pipe network is cancelled, the burden of a water injection station is reduced, particularly the water injection station is located far away from a main force block, and the station construction water injection is not economical.
Description
Technical field
The present invention relates to field of petroleum exploitation, the method for the high solidifying oil of particularly a kind of with well re-injection water injection technological string, or a kind of same well re-injection exploitation.
Background technology
Conventional waterflooding is developed, and namely develops high pour point oil reservoir by the mode of cold water injection, and this not only can make reservoir temperature near water injection well decline, and cold damage can extend very long distance sometimes, finally causes formation crude oil to analyse wax.Oil reservoir, once analyse wax, make the wax of precipitation melt, need higher than wax precipitation temperature about 10 DEG C.So the subject matter that conventional waterflooding exploitation faces is exactly the cold damage problem of reservoir.
Conventional waterflooding generally uses oil reservoir initial stage of production, and now reservoir temperature is higher, and cold water injection exploitation is feasible.But along with the rising of reservoir moisture content, cold damage problem is more and more outstanding.China's major part high pour point oil reservoir enters development late stage, and composite water cut is higher, so conventional waterflooding method has become the needs that can not adapt to current exploitation high pour point oil reservoir.Therefore injected media is needed to keep stratum energy.Coagulate the oil characteristic very responsive to temperature for height, cold water injection very easily causes cold damage to reservoir.Hot-water flooding is selected to be a kind of more feasible method.But the hot water injected from earth's surface is kept away unavoidably will at the heat of pit shaft large losses.
Summary of the invention
In order to solve the problem of existing injection hot water large losses heat.The invention provides a kind of method of same well re-injection water injection technological string and the high solidifying oil of exploitation, this can be extracted out the end water of oil reservoir bottom with well re-injection water injection technological string and return note to top oil reservoir thus exploitation is high solidifying oily by electric submersible pump.
The present invention is the technical scheme solving the employing of its technical problem: a kind of with well re-injection water injection technological string, comprise the oil pipe, inversion electric submersible pump and the pit shaft that connect successively from the top down and set unit, be inverted electric submersible pump and comprise the motor, pump discharge and the centrifugal pump that connect successively from the top down, centrifugal pump and pit shaft set between unit and are provided with intubate, the upper end of intubate is connected with centrifugal pump, the lower end of intubate sets unit through pit shaft, and intubate and pit shaft set unit and be tightly connected.
Be inverted electric submersible pump and also comprise Protection of reverse bias device, Protection of reverse bias device is arranged between motor and pump discharge.
Be inverted the kuppe being arranged with tubular outside electric submersible pump, the fluid free air space of annular is formed between kuppe and inversion electric submersible pump, lower end and the electric submersible pump of kuppe are tightly connected, the upper end of kuppe is open, the place of being tightly connected of kuppe and electric submersible pump is positioned at the below of pump discharge, and part or all of motor is arranged in kuppe.
The upper end of intubate is connected by test cell with between centrifugal pump, this test cell comprises flow rate test pipe nipple, temperature, pressure test nipple joint and snubber successively from the top down, described same well re-injection water injection technological string comprises the data processing and display unit that are arranged on ground, and data processing is connected with display unit and this test cell.
Pit shaft sets unit and comprises the DY445 type packer and Y311 type packer that connect successively from the top down.
The lower end of intubate is also provided with sand-proof pipe and plug from the top down successively, and sand-proof pipe and plug are arranged on the below that pit shaft sets unit.
A method for the high solidifying oil of same well re-injection exploitation, comprises the following steps:
Step 1, select the straight well of suitable geological conditions, described suitable geological conditions is positioned at water harvesting layer and oil reservoir for this straight well, and oil reservoir is positioned at the top of water harvesting layer, containing every interlayer between water harvesting layer and oil reservoir;
Step 2, to water harvesting layer and oil reservoir perforation;
Step 3, the water sampling that water harvesting layer in straight well is flowed out and chemical examination, when this result of laboratory test show water that water harvesting layer is flowed out be applicable to re-injection enter oil reservoir time, carry out next step; When this result of laboratory test show water that water harvesting layer is flowed out be not suitable for re-injection enter oil reservoir time, be back to step 1, reselect the straight well of suitable geological conditions;
Step 4, in straight well under enter above-mentioned pit shaft and set unit, and it is corresponding with the position every interlayer to make pit shaft set unit, then sets;
Step 5, in straight well under enter above-mentioned inversion electric submersible pump, make the lower end hermetically passing pit shaft of intubate set unit, be combined into above-mentioned same well re-injection water injection technological string;
Step 6, startup are inverted electric submersible pump to water filling in oil reservoir.
In step 3, when this result of laboratory test show water that water harvesting layer is flowed out be applicable to re-injection enter oil reservoir time, carry out next step (i.e. step 4) again after also needing carry out step 3.1;
Step 3.1 enters Φ 57mm tubing pump under being, in straight well water harvesting layer flow out water with 40m
3/ d discharge capacity carries out negative pressure pilot production 4 days ~ 5 days, and monitoring pressure situation of change at any time.
Also need carry out step 3.2 after step 3.1, and then carry out next step (i.e. step 4);
Step 3.2 is pipe cleaning, well-flushing, drifting.
The external diameter of kuppe is less than the internal diameter of straight well.
The invention has the beneficial effects as follows: the present invention makes full use of underground heat, realize hot water flooding's exploitation, while saving ground investment, improve oil recovery rate; Realize with the re-injection of well down-hole, effectively avoid the heat-energy losses that the storage of injection water and long distance delivery cause; Production fluid temperature can be improved after water drive takes effect, cancel or change pit shaft heating, viscosity reducing mode; Cancel ground injection pipe network, alleviate water-injection station burden, particularly remote, away from main force's block, water filling of building a station is uneconomical.
Accompanying drawing explanation
Be described in further detail below in conjunction with the method for accompanying drawing to same well re-injection water injection technological string of the present invention and the high solidifying oil of exploitation.
Fig. 1 is the working state schematic representation of same well re-injection water injection technological string.
Fig. 2 is the flow chart of the method for the high solidifying oil of same well re-injection exploitation.
Wherein 1. oil pipes, are 2. inverted electric submersible pump, 21. motors, 22. Protection of reverse bias devices, 23. pump discharges, 24. centrifugal pumps, 25. kuppes, 26. power cables, 31. flow rate test pipe nipples, 32. temperature, pressure test nipple joint, 33. snubbers, 34. intubate, 35. data processings and display unit, 36. test cables, 4. pit shaft sets unit, 41.DY445 type packer, 42.Y311 type packer, 51. sand-proof pipes, 52. plugs;
10. straight well, 11. annular spaces, 61. oil reservoirs, 62. every interlayer, 63. water harvesting layers.
Detailed description of the invention
Below in conjunction with accompanying drawing, same well re-injection water injection technological string of the present invention is described in further detail.A kind of with well re-injection water injection technological string, comprise the oil pipe 1, inversion electric submersible pump 2 and the pit shaft that connect successively from the top down and set unit 4, be inverted electric submersible pump 2 and comprise the motor 21, pump discharge 23 and the centrifugal pump 24 that connect successively from the top down, centrifugal pump 24 and pit shaft set between unit 4 and are provided with intubate 34, the upper end of intubate 34 is connected with centrifugal pump 24, the lower end of intubate 34 sets unit 4 through pit shaft, and intubate 34 and pit shaft set unit 4 and be tightly connected, as shown in Figure 1.
The structure of general electric submersible pump is motor 21 at lower and centrifugal pump 24 upper, the present invention electric submersible pump is inverted have employed motor 21 upper and centrifugal pump 24 under set-up mode, be inverted electric submersible pump 2 and can slow down the vibrations that pit shaft sets unit 4, ensure that the sealing of electric submersible pump 2 improves its application life and reliability, during work, the water that water harvesting layer 63 can be flowed out by inversion electric submersible pump 2 sucks from the lower end of intubate 34 and discharges from pump discharge 23.Be inverted electric submersible pump 2 and also comprise Protection of reverse bias device 22, Protection of reverse bias device 22 is arranged between motor 21 and pump discharge 23.
Be inverted the kuppe 25 being arranged with tubular outside electric submersible pump 2, the fluid free air space of annular is formed between kuppe 25 and inversion electric submersible pump 2, lower end and the electric submersible pump 2 of kuppe 25 are tightly connected, the upper end of kuppe 25 is open, kuppe 25 and electric submersible pump 2 place of being tightly connected are positioned at the below of pump discharge 23, and part or all of motor 21 is arranged in kuppe 25.This design is the waste heat in order to utilize the motor 21 being inverted electric submersible pump 2 further, after water is discharged from pump discharge 23, can accumulate in described fluid free air space, only have when the upper end of the liquid level in described fluid free air space higher than kuppe 25, water ability outwards overflow in described fluid free air space, water in described fluid free air space can contact with motor 21, thus absorb and utilize the waste heat of motor 21, also can lower the temperature for motor 21 simultaneously, the application life of motor 21 can also be improved further, in the present embodiment, the upper end of motor 21 is concordant with the upper end of kuppe 25, motor 21 is all arranged in kuppe 25.
The upper end of intubate 34 is connected by test cell with between centrifugal pump 24, this test cell comprises the snubber 33 of the flow rate test pipe nipple 31 of tubular, the temperature, pressure test nipple joint 32 of tubular and tubular successively from the top down, described same well re-injection water injection technological string comprises the data processing and display unit 35 that are arranged on ground, and data processing is connected with this test cell by test cable 36 with display unit 35.Data processing and display unit 35 can carry out treatment and analysis to the data-signal that flow rate test pipe nipple 31 and temperature, pressure test nipple joint 32 are passed back by test cable 36, and result are shown by data processing and display unit 35.
In addition, pit shaft sets unit 4 and comprises the DY445 type packer 41 and Y311 type packer 42 that connect successively from the top down.The lower end of intubate 34 is also provided with sand-proof pipe 51 and plug 52 from the top down successively, and sand-proof pipe 51 and plug 52 are arranged on the below that pit shaft sets unit 4.During work, be inverted electric submersible pump 2 to start, the water that water harvesting layer 63 is flowed out is discharged from pump discharge 23 successively after sand-proof pipe 51, intubate 34, when the upper end of the liquid level in kuppe 25 higher than kuppe 25, water could outwards flow out, and then accumulates in annular space 11 that pit shaft sets above unit 4, larger by the distance between kuppe 25 and oil reservoir 61, the hydraulic pressure accumulating in the water in annular space 11 that pit shaft sets above unit 4 is also comparatively large, and water can rely on the effect press-in oil reservoir 61 of gravity.
A method for the high solidifying oil of same well re-injection exploitation, as shown in Figure 2, comprises the following steps:
Step 1, select the straight well 10 of suitable geological conditions;
Described suitable geological conditions is positioned at water harvesting layer 63 and oil reservoir 61 for this straight well 10, and oil reservoir 61 is positioned at the top of water harvesting layer 63, contains every interlayer 62 between water harvesting layer 63 and oil reservoir 61;
Step 2, to water harvesting layer 63 and oil reservoir 61 perforation;
Step 3, the oil utilizing the water of collection water harvesting layer 63 outflow in sampling instrument collection straight well 10 and oil reservoir 61 to flow out, to water sample and oil analysis;
Inspection water sample and the compatibility of oil sample, judge that the whether applicable re-injection of water of flowing out water harvesting layer 63 enters in oil reservoir 61, when this result of laboratory test show water that water harvesting layer 63 is flowed out be applicable to re-injection enter oil reservoir 61 time, carry out next step; When this result of laboratory test show water that water harvesting layer 63 is flowed out be not suitable for re-injection enter oil reservoir 61 time, be back to step 1, the straight well 10 reselecting suitable geological conditions is till suitable;
When this result of laboratory test show water that water harvesting layer 63 is flowed out be applicable to re-injection enter oil reservoir 61 time, carry out following steps:
Step 3.1, water layer pilot production;
Under enter Φ 57mm tubing pump, in straight well 10 water harvesting layer 63 flow out water with 40m
3/ d discharge capacity carries out negative pressure pilot production 4 days ~ 5 days, and monitoring pressure situation of change at any time.
Step 3.2, pipe cleaning, well-flushing, drifting;
Namely, after pilot production terminates, take out pilot production tubing string in well, under enter drifting pipe cleaning tubing string, with Φ 156mm pipeline scraper pipe cleaning (sleeve pipe) to artificial bottom of a well, in the upper and lower 20m in packer setting position scraping 4 times ~ 5 times repeatedly, use water flushing.Trip out pipe cleaning tubing string, under enter the drifting of drifting tubing string, then tripping out drifting tubing string.
Step 4, set unit 4 by oil pipe to lower going-into-well cylinder in straight well 10;
Make pit shaft set unit 4 corresponding with the position every interlayer 62, then make to set unit 4 and suppress and set; Pit shaft sets after the DY445 type packer 41 of unit 4 and Y311 type packer 42 set, (when carrying on just having started, tubing string load rises 5 tons-8 tons to carry described oil pipe 4m-6m slowly, nail of giving up is cut off) after, slowly transfer tubing string fish finding top ballast 2 tons-3 tons, judge whether to lose envelope and position thereof, after first this oil pipe trips out, no liquid in oil pipe, illustrate and normally give up, all the other tubing strings can trip out by the operational procedure playing oil pipe.
Step 5, under oil pipe 1 is in straight well 10, enter to be inverted electric submersible pump 2;
Make the lower end hermetically passing pit shaft of intubate 34 set unit 4, be combined into above-mentioned same well re-injection water injection technological string; Kuppe 25 is arranged with outside electric submersible pump 2, the external diameter of kuppe 25 is less than the internal diameter of straight well 10, electric submersible pump 2 is connected with the power supply on ground by power cable 26, this test cell is connected with display unit 35 with the data processing being arranged on ground by test cable 36, completes and installs well head and ground electrical appliance part.
Step 6, start and be inverted electric submersible pump 2 to water filling in oil reservoir 61, be inverted electric submersible pump 2 and start the water that water harvesting layer 63 in rear straight well 10 flows out and accumulate in the annular space 11 that pit shaft sets above unit 4 through the extraction of electric submersible pump 2, and rely on the effect press-in oil reservoir 61 of gravity.
Namely after being inverted electric submersible pump 2 startup, the water that water harvesting layer 63 is flowed out is discharged from pump discharge 23 successively after sand-proof pipe 51, intubate 34, when the upper end of the liquid level in kuppe 25 higher than kuppe 25, water could outwards flow out, then accumulate in annular space 11 that pit shaft sets above unit 4, comparatively large by the distance between kuppe 25 and oil reservoir 61, the hydraulic pressure accumulating in the water in annular space 11 that pit shaft sets above unit 4 is also comparatively large, and water can rely on the effect press-in oil reservoir 61 of gravity.
The method of the solidifying oil of this exploitation height makes full use of underground heat, realizes hot water flooding's exploitation, while saving ground investment, improves oil recovery rate; Realize with the re-injection of well down-hole, effectively avoid the heat-energy losses that the storage of injection water and long distance delivery cause; Production fluid temperature can be improved after water drive takes effect, cancel or change pit shaft heating, viscosity reducing mode; Cancel ground injection pipe network, alleviate water-injection station burden, particularly remote, away from main force's block, water filling of building a station is uneconomical.
The above, be only specific embodiments of the invention, can not limit the scope that invention implements with it, so the displacement of its equivalent assemblies, or the equivalent variations done according to scope of patent protection of the present invention and modification, all still should belong to the category that this patent is contained.In addition, the technical characteristic in the present invention and all can using by independent assortment between technical characteristic, between technical characteristic and technical scheme, between technical scheme and technical scheme.
Claims (10)
1. one kind with well re-injection water injection technological string, it is characterized in that, described same well re-injection water injection technological string comprises the oil pipe (1) connected successively from the top down, inversion electric submersible pump (2) and pit shaft set unit (4), be inverted electric submersible pump (2) and comprise the motor (21) connected successively from the top down, pump discharge (23) and centrifugal pump (24), centrifugal pump (24) and pit shaft set between unit (4) and are provided with intubate (34), the upper end of intubate (34) is connected with centrifugal pump (24), the lower end of intubate (34) sets unit (4) through pit shaft, intubate (34) and pit shaft set unit (4) and are tightly connected.
2. same well re-injection water injection technological string according to claim 1; it is characterized in that: be inverted electric submersible pump (2) and also comprise Protection of reverse bias device (22), Protection of reverse bias device (22) is arranged between motor (21) and pump discharge (23).
3. same well re-injection water injection technological string according to claim 1, it is characterized in that: be inverted the kuppe (25) being arranged with tubular outside electric submersible pump (2), the fluid free air space of annular is formed between kuppe (25) and inversion electric submersible pump (2), lower end and the electric submersible pump (2) of kuppe (25) are tightly connected, the upper end of kuppe (25) is open, kuppe (25) is positioned at the below of pump discharge (23) with the place of being tightly connected of electric submersible pump (2), part or all of motor (21) is arranged in kuppe (25).
4. same well re-injection water injection technological string according to claim 1, it is characterized in that: the upper end of intubate (34) is connected by test cell with between centrifugal pump (24), this test cell comprises flow rate test pipe nipple (31), temperature, pressure test nipple joint (32) and snubber (33) successively from the top down, described same well re-injection water injection technological string comprises the data processing and display unit (35) that are arranged on ground, and data processing is connected with display unit (35) and this test cell.
5. same well re-injection water injection technological string according to claim 1, is characterized in that: pit shaft sets unit (4) and comprises the DY445 type packer (41) and Y311 type packer (42) that connect successively from the top down.
6. same well re-injection water injection technological string according to claim 1, it is characterized in that: the lower end of intubate (34) is also provided with sand-proof pipe (51) and plug (52) from the top down successively, and sand-proof pipe (51) and plug (52) are arranged on the below that pit shaft sets unit (4).
7. with a method for the high solidifying oil of well re-injection exploitation, it is characterized in that: the method for the high solidifying oil of described same well re-injection exploitation comprises the following steps:
Step 1, select the straight well (10) of suitable geological conditions, described suitable geological conditions is positioned at water harvesting layer (63) and oil reservoir (61) for this straight well (10), oil reservoir (61) is positioned at the top of water harvesting layer (63), contains every interlayer (62) between water harvesting layer (63) and oil reservoir (61);
Step 2, to water harvesting layer (63) and oil reservoir (61) perforation;
Step 3, the water sampling that straight well (10) interior water harvesting layer (63) is flowed out and chemical examination, when this result of laboratory test show water that water harvesting layer (63) is flowed out be applicable to re-injection enter oil reservoir (61) time, carry out next step; When this result of laboratory test show water that water harvesting layer (63) is flowed out be not suitable for re-injection enter oil reservoir (61) time, be back to step 1, reselect the straight well (10) of suitable geological conditions;
Step 4, set unit (4) to entering pit shaft according to claim 1 under in straight well (10), and it is corresponding with the position every interlayer (62) to make pit shaft set unit (4), then sets;
Step 5, under in straight well (10), enter inversion electric submersible pump (2) according to claim 1, make the lower end hermetically passing pit shaft of intubate (34) set unit (4), be combined into the same well re-injection water injection technological string in claim 1 ~ 6 described in any one claim;
Step 6, startup are inverted electric submersible pump (2) to oil reservoir (61) interior water filling.
8. the method for the high solidifying oil of same well re-injection exploitation according to claim 7, it is characterized in that: in step 3, when this result of laboratory test show water that water harvesting layer (63) is flowed out be applicable to re-injection enter oil reservoir (61) time, carry out next step again after also needing carry out step 3.1;
Step 3.1, under enter Φ 57mm tubing pump, the water flowed out straight well (10) interior water harvesting layer (63) is with 40m
3/ d discharge capacity carries out negative pressure pilot production 4 days ~ 5 days, and monitoring pressure situation of change at any time.
9. the method for the high solidifying oil of same well re-injection exploitation according to claim 8, is characterized in that: also need carry out step 3.2 after step 3.1, and then carry out next step;
Step 3.2, pipe cleaning, well-flushing, drifting.
10. the method for the high solidifying oil of same well re-injection exploitation according to claim 7, is characterized in that: the external diameter of kuppe (25) is less than the internal diameter of straight well (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410776197.8A CN104533359B (en) | 2014-12-15 | 2014-12-15 | Same-well reinjection water injection process pipe column and method for exploiting high-pour-point oil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410776197.8A CN104533359B (en) | 2014-12-15 | 2014-12-15 | Same-well reinjection water injection process pipe column and method for exploiting high-pour-point oil |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104533359A true CN104533359A (en) | 2015-04-22 |
| CN104533359B CN104533359B (en) | 2017-06-13 |
Family
ID=52848959
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410776197.8A Active CN104533359B (en) | 2014-12-15 | 2014-12-15 | Same-well reinjection water injection process pipe column and method for exploiting high-pour-point oil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104533359B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108071376A (en) * | 2016-11-17 | 2018-05-25 | 中国石油天然气股份有限公司 | Injection and production string in coal-bed gas well |
| CN108590623A (en) * | 2018-03-19 | 2018-09-28 | 中国石油天然气股份有限公司 | Same-well reinjection process pipe column and method |
| CN108756847A (en) * | 2018-05-27 | 2018-11-06 | 中国海洋石油集团有限公司 | Water-oil separating single fighter double pump injection and extraction system before a kind of pump |
| CN109025932A (en) * | 2018-08-01 | 2018-12-18 | 中国石油天然气股份有限公司 | Oil production pipe |
| CN114041004A (en) * | 2019-04-26 | 2022-02-11 | 通用能源回收公司 | Apparatus, method and wellbore installation for mitigating thermal damage to well components during high temperature fluid injection |
| CN115704292A (en) * | 2021-08-11 | 2023-02-17 | 中国石油天然气股份有限公司 | Water drive development process method utilizing self bottom water energy |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003042496A1 (en) * | 2001-11-15 | 2003-05-22 | Bp Exploration Operating Company Limited | Method for diverting treatment fluid into a low permeability zone of a formation |
| CA2281083C (en) * | 1998-08-18 | 2006-12-05 | Halliburton Energy Services, Inc. | Method and apparatus for down-hole oil/water separation during oil well pumping operations |
| CN101353957A (en) * | 2008-03-07 | 2009-01-28 | 中国石油化工股份有限公司胜利油田分公司采油工艺研究院 | Same well production-injection method and pipe column |
| CN201407200Y (en) * | 2009-05-18 | 2010-02-17 | 胜利油田胜利泵业有限责任公司 | Injection process tubular column of inverted submersible pump |
| CN202220742U (en) * | 2011-08-25 | 2012-05-16 | 合肥凯泉电机电泵有限公司 | Upper motor lower pump type mining submersible multistage electric pump |
| CN204371267U (en) * | 2014-12-15 | 2015-06-03 | 中国石油天然气股份有限公司 | Same-well reinjection water injection process pipe column |
-
2014
- 2014-12-15 CN CN201410776197.8A patent/CN104533359B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2281083C (en) * | 1998-08-18 | 2006-12-05 | Halliburton Energy Services, Inc. | Method and apparatus for down-hole oil/water separation during oil well pumping operations |
| WO2003042496A1 (en) * | 2001-11-15 | 2003-05-22 | Bp Exploration Operating Company Limited | Method for diverting treatment fluid into a low permeability zone of a formation |
| CN101353957A (en) * | 2008-03-07 | 2009-01-28 | 中国石油化工股份有限公司胜利油田分公司采油工艺研究院 | Same well production-injection method and pipe column |
| CN201407200Y (en) * | 2009-05-18 | 2010-02-17 | 胜利油田胜利泵业有限责任公司 | Injection process tubular column of inverted submersible pump |
| CN202220742U (en) * | 2011-08-25 | 2012-05-16 | 合肥凯泉电机电泵有限公司 | Upper motor lower pump type mining submersible multistage electric pump |
| CN204371267U (en) * | 2014-12-15 | 2015-06-03 | 中国石油天然气股份有限公司 | Same-well reinjection water injection process pipe column |
Non-Patent Citations (5)
| Title |
|---|
| 于洪英等: "同井采注水技术研究与应用", 《化学工程与装备》 * |
| 王学忠等: "孤东油田地热采油可行性研究", 《断块油气田》 * |
| 王蒙等: "基于潜油电泵的同井采注水关键技术研究", 《价值工程》 * |
| 胡相嵩等: "采下注上注水工艺潜油电泵机组研究与应用", 《石油化工应用》 * |
| 邱永发: "电潜泵同井采注水工艺及关键技术研究", 《石油机械》 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108071376A (en) * | 2016-11-17 | 2018-05-25 | 中国石油天然气股份有限公司 | Injection and production string in coal-bed gas well |
| CN108590623A (en) * | 2018-03-19 | 2018-09-28 | 中国石油天然气股份有限公司 | Same-well reinjection process pipe column and method |
| CN108756847A (en) * | 2018-05-27 | 2018-11-06 | 中国海洋石油集团有限公司 | Water-oil separating single fighter double pump injection and extraction system before a kind of pump |
| CN108756847B (en) * | 2018-05-27 | 2020-09-01 | 中国海洋石油集团有限公司 | Oil-water separation unit double-pump injection-production system before pump |
| CN109025932A (en) * | 2018-08-01 | 2018-12-18 | 中国石油天然气股份有限公司 | Oil production pipe |
| CN114041004A (en) * | 2019-04-26 | 2022-02-11 | 通用能源回收公司 | Apparatus, method and wellbore installation for mitigating thermal damage to well components during high temperature fluid injection |
| CN115704292A (en) * | 2021-08-11 | 2023-02-17 | 中国石油天然气股份有限公司 | Water drive development process method utilizing self bottom water energy |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104533359B (en) | 2017-06-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104533359A (en) | Same-well reinjection water injection process pipe column and method for exploiting high-pour-point oil | |
| CN204252967U (en) | Hot dry rock multi cycle heating system | |
| CN201212387Y (en) | Gas injection, gas production and brine discharge integration process pipe column for underground gas storage | |
| CN103104219B (en) | Utilize and draw back with layer equivalent original place the method that well group draws underground heat energy | |
| CN204663496U (en) | A kind of canned pair of down-hole electric submersible pump producing tubular column | |
| CN110131781A (en) | A kind of mid-deep strata underground heat adopts fill system with well | |
| CN112780232B (en) | Pressure-control heat-insulation exploitation system for hot dry rock | |
| CN104453839A (en) | Large-discharge-capacity oil-water separation automatically flowing water injection system | |
| CN104653136B (en) | Method for drilling and grinding composite bridge plug by conventional oil pipe underground power | |
| CN103821470A (en) | Oil well hot nitrogen injection well washing technological method and system | |
| CN203394482U (en) | Thickened oil exploitation device for horizontal well | |
| CN111102209B (en) | Electric submersible pump backflow lifting device and backflow lifting method applied to low-yield well | |
| CN107476773A (en) | Tool string and method for eliminating obstacles in well | |
| CN108487882A (en) | A kind of production tree device and method for exploitation of gas hydrate | |
| CN204371267U (en) | Same-well reinjection water injection process pipe column | |
| CN109915082A (en) | A kind of device and method for exploiting Offshore Heavy Oil Field oil reservoir | |
| CN211177478U (en) | Single-well circulating efficient heat exchange system | |
| CN201865632U (en) | Wax removing and preventing device for oil well | |
| CN115573690A (en) | Natural gas hydrate thermal recovery system and method based on carbon dioxide storage | |
| CN203905910U (en) | Ground-flow-free water injection string | |
| CN201972681U (en) | Heat injection and mechanical oil extraction integrated device | |
| KR101303575B1 (en) | Combined type geothermal system and construction method using large aperture punchung | |
| CN113513297A (en) | Hot dry rock geothermal exploitation method and exploitation device | |
| CN102817566A (en) | Horizontal well sand bailing device | |
| CN105089571A (en) | Water injection string without surface flow and water injection technological method of water injection string |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |