CN105863562A - Horizontal well water injector for low-permeability oil layer - Google Patents
Horizontal well water injector for low-permeability oil layer Download PDFInfo
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- CN105863562A CN105863562A CN201610358953.4A CN201610358953A CN105863562A CN 105863562 A CN105863562 A CN 105863562A CN 201610358953 A CN201610358953 A CN 201610358953A CN 105863562 A CN105863562 A CN 105863562A
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- 235000020681 well water Nutrition 0.000 title abstract 2
- 239000002349 well water Substances 0.000 title abstract 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 180
- 238000002347 injection Methods 0.000 claims abstract description 74
- 239000007924 injection Substances 0.000 claims abstract description 74
- 238000001914 filtration Methods 0.000 claims abstract description 19
- 230000035699 permeability Effects 0.000 claims abstract description 9
- 238000004062 sedimentation Methods 0.000 claims description 13
- 238000004659 sterilization and disinfection Methods 0.000 claims description 12
- 238000007789 sealing Methods 0.000 claims description 9
- 239000011148 porous material Substances 0.000 claims description 3
- 238000011282 treatment Methods 0.000 abstract description 38
- 238000000034 method Methods 0.000 abstract description 32
- 230000008569 process Effects 0.000 abstract description 29
- 238000011221 initial treatment Methods 0.000 abstract description 25
- 238000004519 manufacturing process Methods 0.000 abstract description 11
- 230000000903 blocking effect Effects 0.000 abstract 3
- 238000005192 partition Methods 0.000 abstract 3
- 238000005536 corrosion prevention Methods 0.000 abstract 2
- 230000000149 penetrating effect Effects 0.000 abstract 1
- 230000001954 sterilising effect Effects 0.000 abstract 1
- 230000007797 corrosion Effects 0.000 description 29
- 238000005260 corrosion Methods 0.000 description 29
- 238000005516 engineering process Methods 0.000 description 12
- 238000006243 chemical reaction Methods 0.000 description 6
- 239000003755 preservative agent Substances 0.000 description 5
- 230000002335 preservative effect Effects 0.000 description 5
- 239000012530 fluid Substances 0.000 description 4
- 239000003129 oil well Substances 0.000 description 4
- 238000000926 separation method Methods 0.000 description 4
- 239000010865 sewage Substances 0.000 description 4
- 230000006872 improvement Effects 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 241000894006 Bacteria Species 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 238000006056 electrooxidation reaction Methods 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 238000007667 floating Methods 0.000 description 2
- 239000008398 formation water Substances 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 230000002401 inhibitory effect Effects 0.000 description 2
- 230000002045 lasting effect Effects 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 238000010992 reflux Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000001580 bacterial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004210 cathodic protection Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 239000013028 medium composition Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000006467 substitution reaction Methods 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
- E21B41/00—Equipment or details not covered by groups E21B15/00 - E21B40/00
- E21B41/005—Waste disposal systems
- E21B41/0057—Disposal of a fluid by injection into a subterranean formation
-
- 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
- E21B41/00—Equipment or details not covered by groups E21B15/00 - E21B40/00
- E21B41/02—Equipment or details not covered by groups E21B15/00 - E21B40/00 in situ inhibition of corrosion in boreholes or wells
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Prevention Of Electric Corrosion (AREA)
Abstract
The invention discloses a horizontal well water injector for a low permeability oil layer. The water injector comprises a water source well, a filtering tank, a sterilizing tank, an electric pump and a tank body, wherein the water outlet of the electric pump is communicated with one end of the tank body through a water intake pipeline; the other end of the tank body is connected with a water injection pipe; the inner wall at one side of the tank body is provided with a partition plate and a blocking plate at intervals; the inner wall at the other side of the tank body is provided with a plurality of second sacrificial anodes; two ends of a sleeve respectively penetrate through the partition plate and the blocking plate; a plurality of first sacrificial anodes are fixed in an annulus; a plurality of water penetrating holes which are communicated with the annulus are formed in the partition plate; a plurality of circulating holes which are communicated with the annulus are formed in the outer wall, close to one end of the blocking plate, of the sleeve. The water injector disclosed by the invention has the advantages that stage treatment is performed on injected water, preliminary corrosion prevention is performed in a primary treatment cavity, and main corrosion prevention is performed in a secondary treatment cavity, so that the workload of the sacrificial anodes in the tank body is greatly reduced, the sacrificial anodes in the tank body are prevented from being frequently changed due to rapid consumption, and the production cost of a water injection procedure in an oil exploitation process is reduced.
Description
Technical field
The present invention relates to petroleum pipeline corrosion-resistant field, specifically refer to a kind of low permeability pay water injection of horizontal well device.
Background technology
At present, the etching problem of oil field pipe mainly embodies a concentrated expression of on the production facility in waterflood-transmission line, hot backwater, steam tracing pipeline, High water cut petroleum pipeline and the oil field such as tanks portion, sewage disposal device.But it is as the prolongation of development time; formation pressure declines; elastic exploitation can not meet the requirement of exploitation; for equilibrium oil stressor layer; and also to protection environment; after needing to process the separation water of production fluid, re-injection is to oil reservoir; re-injection process needs the production fluid separation water after the process of substantial amounts of pipelined, and owing to production fluid separation water constituent is complicated, bacterial reproduction is serious; it is also accompanied by fouling in addition to corrosivity is very strong; the pipeline inwall of conveying can be produced serious corrosion, in addition, manage defeated pressure higher; general at about 10MPa, high reaches
30-40MPa, corrosion easily causes pipeline cracking and perforation, and sewage leaks outside, and on the one hand causes large-area water injection well to stop note, affects completing of injection allocation amount.
nullThe method that the interior anticorrosion of process defeated to line pipe and the control of underdeposit corrosion are taked at present is and adds corrosion inhibiter and corrosion inhibiting and descaling agent，But the complexity due to pumped (conveying) medium composition，Manage the polytropy of defeated technique，The corrosion of pipeline can not be effectively controlled，The particularly underdeposit corrosion of pipeline cannot reach to control purpose by adding corrosion inhibiter and corrosion inhibiting and descaling agent with spot corrosion perforation，Pipeline corrosion and corrosion failure、Perforation the most frequently occurs，Production to oil field causes huge economic loss，And SACRIFICIAL ANODE CATHODIC PROTECTION can effectively control production fluid separation water and the return water corrosion to pipeline inwall，But owing to pipeline internal diameter is little，Sacrificial anode cannot be inserted，And in the injecting process，Loss to sacrificial anode is bigger，During the injection water that particularly in water injection well, filling and underground water compatibility differ greatly，Need sacrificial anode is frequently changed，Exacerbate the cost of winning of oil well.
Summary of the invention
It is an object of the invention to provide a kind of low permeability pay water injection of horizontal well device, processing to improve in oil well while the corrosion-resistant degree of water injection pipe inwall to injecting water, reduce the production cost in water injection technology.
The purpose of the present invention is achieved through the following technical solutions:
nullA kind of low permeability pay water injection of horizontal well device，Including water supply well、Filtering tank、Disinfection tank、Electric pump、Tank body，Water supply well is connected with the water inlet end of filtering tank by water pump，The water side of described filtering tank is connected with the water inlet end of disinfection tank by conduit，The water side of disinfection tank is connected with the water inlet of electric pump by conduit，The delivery port of electric pump is connected with tank body one end by back with water inlet line，The tank body other end connects water injection pipe，Described tank body side inwall is arranged at intervals with dividing plate and plugging plate，Described tank body opposite side inwall is provided with multiple second sacrificial anode，The two ends of sleeve extend through described dividing plate and plugging plate，Sleeve is just to described back with water inlet line，And between sleeve and tank body, form an annular space closed，Multiple first sacrificial anodes are fixed in described annular space，And on dividing plate, have multiple permeable hole connected with annular space，On one end outer wall of plugging plate, multiple opening connected with annular space is had at described sleeve，The aperture of described intercommunicating pore is injected the circulating direction of water along tank body and is incremented by，Described inner tank wall is provided with sealing ring，The outer circle wall of described plugging plate is connected with inner tank wall by sealing ring；Also including the eddy flow valve being arranged in sleeve, described eddy flow valve is concentric with described dividing plate.
In prior art, in water injection technology, water source generally utilizes oil field extracted water, while ensureing the sufficient water yield and formation water compatibility, reduces environmental pollution；But oil field extracted water is containing sewage, and meta-alkalescence, hardness are low, salinity is higher simultaneously, can not be directly injected in water injection well, after but existing water injection technology carries out certain process to oil field extracted water, still can occur corrosion product and substantial amounts of incrustation scale in flood pattern, especially in waterflood-transmission line, water injection pipe often blocks or makes to inject water because of corrosion and cannot arrive predetermined oil reservoir；In the present invention, by filtering tank, disinfection tank and the preservative treatment tank multistep treatment to injecting water, avoid injecting water and bacteria breed, electrochemical corrosion or local corrosion occur in waterflood-transmission line, and utilize external sacrificial anode to react with injecting water, to reduce the extent of corrosion in waterflood-transmission line, it is ensured that effectively carrying out of water injection technology.
And sacrificial anode consumes huge in existing water injection technology, inventor is through the improvement to external sacrificial anode, by to the two stages for the treatment of injecting water, while reducing sacrificial anode extent of deterioration, improve the process rank injecting water, and then realize the pre-front anticorrosion to water injection pipe, reduce corrosion and corrosion failure, the perforation probability of waterflood-transmission line.During use, injecting water and flow in tank body by back with water inlet line, tank interior space is separated into two parts by its median septum and plugging plate, i.e. injects primary treatment cavity and the two stage treatment cavity of water；Enter the injection water in tank body after the shunting of dividing plate and sleeve, it is divided into two-way to circulate in tank body, the first via injects water by annular space after entering after permeable hole, i.e. enter in primary treatment cavity, by with the first sacrificial anode generation chemical reaction after, entered in sleeve by opening again, second tunnel is injected water and is then entered directly in two stage treatment cavity by sleeve, the first injection water after primary treatment enters in two stage treatment cavity with sleeve equally simultaneously, eventually pass with the second sacrificial anode generation chemical reaction after, it is discharged in water injection pipe；Injection water after twice process circulates at water injection pipe, and be substantially reduced with the probability of the tube wall generation chemical reaction of metal material, i.e. reducing the probability that chemical attack occurs on water injection pipe inwall so that in the water injection technology of oil well, the service life of water injection pipe is greatly improved.And using classification to process the process injecting water, pre-anticorrosion is carried out in primary treatment cavity, and in two stage treatment cavity, carry out main anticorrosion, the live load making the sacrificial anode in tank body is substantially reduced, the sacrificial anode in tank body is avoided to occur quickly consuming and frequently changing, the production cost in water filling operation during reduction oil exploitation.Wherein, the first sacrificial anode in primary treatment cavity consumes slower, and the second sacrificial anode in two stage treatment cavity consumes very fast, when sacrificial anode is replaced, the middle part of tank body is provided with ring flange, can facilitate and the second sacrificial anode is carried out quick-replaceable, to maintain in tank body the lasting process injecting water, and in sleeve, it is provided with eddy flow valve, avoiding enter into sleeve and on the premise of the injection water reflux of primary treatment, can be according to injecting discharge and the concrete condition of flow velocity, the circulation of water is injected in controlling tank body, prevent the second sacrificial anode load in two stage treatment cavity excessive, in the process injecting water thoroughly not being caused water injection pipe in avoiding tank body, corrosion occurs, the generation of the phenomenons such as fouling.And when injecting water and entering primary treatment cavity, the aperture of permeable hole is incremented by along injecting current direction, gradually changing by flow area, and the flow velocity injecting water is the most slow, the dynamics that is hit making the first sacrificial anode reduces, it is to avoid the first consuming excessively of sacrificial anode and cause frequently replacing；And when the first sacrificial anode and the second sacrificial anode are replaced, tank body is divided into left and right two parts by ring flange, sleeve runs through the right part of end, one end extension tank body of plugging plate, plugging plate is connected with the inwall of tank body right part by sealing ring simultaneously, make when ring flange solves to connect, first sacrificial anode and the second sacrificial anode all can directly display out, facilitate the quick-replaceable of staff.
The internal diameter of described sleeve account for described tank body internal diameter 13 ~ 12.In tank body, the process injecting water is divided into two parts, it is auxiliary with primary treatment cavity, two stage treatment cavity is main, and the aperture of permeable hole and opening is less in processing process chambers, the injection discharge i.e. processed in primary treatment cavity is relatively small, and major part enters into the injection water in tank body in sleeve flows into two stage treatment cavity, the internal diameter of sleeve is set to described tank body internal diameter 13 ~ 12, i.e. ensure in sleeve, injection water and the injection water without any process after primary treatment enter in two stage treatment cavity in proper proportions, the second sacrificial anode is made to realize the while of injecting preservative treatment efficiency maximized of water, reduce the consumption of the second sacrificial anode, ensure that the second sacrificial anode in tank body realizes optimal consumption and income ratio.
Described second sacrificial anode along tank body length radially more than described first sacrificial anode along tank body length radially.The layout of the first sacrificial anode is limited by the annular space space between sleeve and inner tank wall, simultaneously to flow through primary treatment cavity bigger with the injection discharge difference in two stage treatment cavity, therefore, the core of the second sacrificial anode is arranged on the position closer to tank body axis, make the second sacrificial anode more abundant with contacting of injection water, to realize the treatment effeciency maximization of the second sacrificial anode.
Also including that sedimentation basin, described sedimentation basin are tube settler, and water delivery side of pump connects with the water inlet end of sedimentation basin, the water side of sedimentation basin connects with the water inlet end of filtering tank.Select tube settler that the injection water in water supply well is carried out primary filter, utilize the principle of laminar flow to improve the treatment effeciency of sedimentation basin, the distance of particle sedimentation is shortened while increasing desilting area, oarse-grained floating thing and impurity are filtered, to alleviate the live load in filtering tank, reduce the cleaning frequency of filtering tank simultaneously.
The present invention compared with prior art, has such advantages as and beneficial effect:
1, the process injecting water is being used classification to process by the present invention, pre-anticorrosion is carried out in primary treatment cavity, and in two stage treatment cavity, carry out main anticorrosion, the live load making the sacrificial anode in tank body is substantially reduced, the sacrificial anode in tank body is avoided to occur quickly consuming and frequently changing, the production cost in water filling operation during reduction oil exploitation；
2, the present invention is in sleeve, injection water and the injection water without any process after primary treatment enter in two stage treatment cavity in proper proportions, the second sacrificial anode is made to realize the while of injecting preservative treatment efficiency maximized of water, reduce the consumption of the second sacrificial anode, it is ensured that the second sacrificial anode in tank body realizes optimal consumption and income ratio；
3, the core of the second sacrificial anode is arranged on the position closer to tank body axis by the present invention so that the second sacrificial anode is more abundant with contacting of injection water, to realize the treatment effeciency maximization of the second sacrificial anode.
Accompanying drawing explanation
Accompanying drawing described herein is used for providing being further appreciated by the embodiment of the present invention, constitutes the part of the application, is not intended that the restriction to the embodiment of the present invention.In the accompanying drawings:
Fig. 1 is present configuration schematic diagram；
Fig. 2 is the structural representation of tank body.
Mark and corresponding parts title in accompanying drawing:
1-back with water inlet line, 2-permeable hole, 3-dividing plate, 4-sleeve, 5-the first sacrificial anode, 6-tank body, 7-opening, 8-plugging plate, 9-the second sacrificial anode, 10-water injection pipe, 11-ring flange, 12-eddy flow valve, 13-sealing ring, 14-water supply well, 15-sedimentation basin, 16-filtering tank, 17-disinfection tank, 18-electric pump.
Detailed description of the invention
For making the object, technical solutions and advantages of the present invention clearer, below in conjunction with embodiment and accompanying drawing, the present invention is described in further detail, and the exemplary embodiment of the present invention and explanation thereof are only used for explaining the present invention, not as a limitation of the invention.
Embodiment 1
nullAs depicted in figs. 1 and 2，The present embodiment includes water supply well 14、Filtering tank 16、Disinfection tank 17、Electric pump 18、Tank body 6，Water supply well 14 is connected with the water inlet end of filtering tank 16 by water pump，The water side of described filtering tank 16 is connected with the water inlet end of disinfection tank 17 by conduit，The water side of disinfection tank 17 is connected with the water inlet of electric pump 18 by conduit，The delivery port of electric pump 18 is connected with tank body 6 one end by back with water inlet line 1，Tank body 6 other end connects water injection pipe 10，Described tank body 6 side inwall is arranged at intervals with dividing plate 3 and plugging plate 8，Described tank body 6 opposite side inwall is provided with multiple second sacrificial anode 9，The two ends of sleeve 4 extend through described dividing plate 3 and plugging plate 8，Sleeve 4 is just to described back with water inlet line 1，And between sleeve 4 and tank body 6, form an annular space closed，Multiple first sacrificial anodes 5 are fixed in described annular space，And on dividing plate 3, have multiple permeable hole 2 connected with annular space，On one end outer wall of plugging plate 8, multiple opening 7 connected with annular space is had at described sleeve 4，The aperture of described intercommunicating pore 2 is injected the circulating direction of water along tank body 6 and is incremented by，Described tank body 6 inwall is provided with sealing ring 13，The outer circle wall of described plugging plate 8 is connected with tank body 6 inwall by sealing ring 13；Also including the eddy flow valve 12 being arranged in sleeve 4, described eddy flow valve 12 is concentric with described dividing plate 3.
In prior art, in water injection technology, water source generally utilizes oil field extracted water, while ensureing the sufficient water yield and formation water compatibility, reduces environmental pollution；But oil field extracted water is containing sewage, and meta-alkalescence, hardness are low, salinity is higher simultaneously, can not be directly injected in water injection well, after but existing water injection technology carries out certain process to oil field extracted water, still can occur corrosion product and substantial amounts of incrustation scale in flood pattern, especially in waterflood-transmission line, water injection pipe 10 often blocks or makes to inject water because of corrosion and cannot arrive predetermined oil reservoir；In the present invention, by filtering tank 16, disinfection tank 17 and the preservative treatment tank multistep treatment to injecting water, avoid injecting water and bacteria breed, electrochemical corrosion or local corrosion occur in waterflood-transmission line, and utilize external sacrificial anode to react with injecting water, to reduce the extent of corrosion in waterflood-transmission line, it is ensured that effectively carrying out of water injection technology.
Sacrificial anode consumes huge in existing water injection technology, inventor is through the improvement to external sacrificial anode, by to the two stages for the treatment of injecting water, while reducing sacrificial anode extent of deterioration, improve the process rank injecting water, and then realize the pre-front anticorrosion to water injection pipe 10, reduce corrosion and corrosion failure, the perforation probability of water injection pipe 10 line.During use, injecting water and flow in tank body 6 by back with water inlet line 1, tank body 6 inner space is separated into two parts with plugging plate 8 by its median septum 3, i.e. injects primary treatment cavity and the two stage treatment cavity of water；Enter the injection water in tank body 6 after the shunting of dividing plate 3 and sleeve 4, it is divided into two-way to circulate in tank body 6, the first via injects water by annular space after entering after permeable hole 2, i.e. enter in primary treatment cavity, after there is chemical reaction with the first sacrificial anode 5, entered in sleeve 4 by opening 7 again, second tunnel is injected water and is then entered directly in two stage treatment cavity by sleeve 4, the first injection water after primary treatment enters in two stage treatment cavity with sleeve 4 equally simultaneously, eventually pass after there is chemical reaction with the second sacrificial anode 9, it is discharged in water injection pipe 10；Injection water after twice process circulates at water injection pipe 10, and be substantially reduced with the probability of the tube wall generation chemical reaction of metal material, i.e. reducing the probability that chemical attack occurs on water injection pipe 10 inwall so that in the water injection technology of oil well, the service life of water injection pipe 10 is greatly improved.And using classification to process the process injecting water, pre-anticorrosion is carried out in primary treatment cavity, and in two stage treatment cavity, carry out main anticorrosion, the live load making the sacrificial anode in tank body 6 is substantially reduced, the sacrificial anode in tank body 6 is avoided to occur quickly consuming and frequently changing, the production cost in water filling operation during reduction oil exploitation.Wherein, the first sacrificial anode 5 in primary treatment cavity consumes slower, and the second sacrificial anode 9 in two stage treatment cavity consumes comparatively fast, when sacrificial anode is replaced, the middle part of tank body 6 is provided with ring flange 11, can facilitate and the second sacrificial anode 9 carried out quick-replaceable, to maintain the interior lasting process to injecting water of tank body 6, and in sleeve 4, it is provided with eddy flow valve 12, avoiding enter into sleeve 4 and on the premise of the injection water reflux of primary treatment, can be according to injecting discharge and the concrete condition of flow velocity, the circulation of water is injected in controlling tank body 4, prevent the second sacrificial anode 9 load in two stage treatment cavity excessive, in the process injecting water thoroughly not being caused water injection pipe 10 in avoiding tank body 6, corrosion occurs, the generation of the phenomenons such as fouling.
And when injecting water and entering primary treatment cavity, the aperture of permeable hole 2 is incremented by along injecting current direction, gradually changing by flow area, and the flow velocity injecting water is the most slow, the dynamics that is hit making the first sacrificial anode 5 reduces, it is to avoid the first consuming excessively of sacrificial anode 5 and cause frequently replacing；And when the first sacrificial anode 5 and the second sacrificial anode 9 are replaced, tank body 6 is divided into left and right two parts by ring flange 11, sleeve 4 runs through the right part of end, one end extension tank body 6 of plugging plate 8, plugging plate 8 is connected with the inwall of tank body 6 right part by sealing ring 13 simultaneously, make when ring flange 11 solves to connect, first sacrificial anode 5 and the second sacrificial anode 9 all can directly display out, facilitate the quick-replaceable of staff.
As preferably, the internal diameter of described sleeve 4 account for described tank body 6 internal diameter 13 ~ 12.In tank body 6, the process injecting water is divided into two parts, it is auxiliary with primary treatment cavity, two stage treatment cavity is main, and the aperture of permeable hole 2 and opening 7 is less in processing process chambers, the injection discharge i.e. processed in primary treatment cavity is relatively small, and major part enters into the injection water in tank body 6 in sleeve 4 flows into two stage treatment cavity, the internal diameter of sleeve 4 is set to described tank body 6 internal diameter 13 ~ 12, i.e. ensure in sleeve 4, injection water and the injection water without any process after primary treatment enter in two stage treatment cavity in proper proportions, the second sacrificial anode 9 is made to realize the while of injecting preservative treatment efficiency maximized of water, reduce the consumption of the second sacrificial anode 9, ensure that the second sacrificial anode 9 in tank body 6 realizes optimal consumption and income ratio.
Wherein, the second sacrificial anode 9 in the present embodiment along tank body 6 length radially more than described first sacrificial anode 5 along tank body 6 length radially.The layout of the first sacrificial anode 5 is limited by the annular space space between sleeve 4 and tank body 6 inwall, simultaneously to flow through primary treatment cavity bigger with the injection discharge difference in two stage treatment cavity, therefore, the core of the second sacrificial anode 9 is arranged on the position closer to tank body 6 axis, make the second sacrificial anode 9 more abundant with contacting of injection water, to realize the treatment effeciency maximization of the second sacrificial anode 9.
As preferably, select tube settler that the injection water in water supply well 14 is carried out primary filter, utilize the principle of laminar flow to improve the treatment effeciency of sedimentation basin 15, the distance of particle sedimentation is shortened while increasing desilting area, oarse-grained floating thing and impurity are filtered, to alleviate the live load in filtering tank 16, reduce the cleaning frequency of filtering tank 16 simultaneously.
Above-described detailed description of the invention; the purpose of the present invention, technical scheme and beneficial effect are further described; it is it should be understood that; the foregoing is only the detailed description of the invention of the present invention; the protection domain being not intended to limit the present invention; all within the spirit and principles in the present invention, any modification, equivalent substitution and improvement etc. done, should be included within the scope of the present invention.
Claims (4)
- null1. a low permeability pay water injection of horizontal well device，It is characterized in that: include water supply well (14)、Filtering tank (16)、Disinfection tank (17)、Electric pump (18)、Tank body (6)，Water supply well (14) is connected with the water inlet end of filtering tank (16) by water pump，The water side of described filtering tank (16) is connected with the water inlet end of disinfection tank (17) by conduit，The water side of disinfection tank (17) is connected with the water inlet of electric pump (18) by conduit，The delivery port of electric pump (18) is connected with tank body (6) one end by back with water inlet line (1)，Tank body (6) other end connects water injection pipe (10)，Described tank body (6) side inwall is arranged at intervals with dividing plate (3) and plugging plate (8)，Described tank body (6) opposite side inwall is provided with multiple second sacrificial anode (9)，The two ends of sleeve (4) extend through described dividing plate (3) and plugging plate (8)，Sleeve (4) is just to described back with water inlet line (1)，And between sleeve (4) and tank body (6), form an annular space closed，Multiple first sacrificial anodes (5) are fixed in described annular space，And on dividing plate (3), have multiple permeable hole (2) connected with annular space，On one end outer wall of plugging plate (8), multiple opening (7) connected with annular space is had at described sleeve (4)，The aperture of described intercommunicating pore (2) is injected the circulating direction of water along tank body (6) and is incremented by，Described tank body (6) inwall is provided with sealing ring (13)，The outer circle wall of described plugging plate (8) is connected with tank body (6) inwall by sealing ring (13)；Also including the eddy flow valve (12) being arranged in sleeve (4), described eddy flow valve (12) is concentric with described dividing plate (3).
- A kind of low permeability pay water injection of horizontal well device the most according to claim 1, it is characterised in that: the internal diameter of described sleeve (4) account for described tank body (6) internal diameter 13 ~ 12.
- A kind of low permeability pay water injection of horizontal well device the most according to claim 1, it is characterised in that: described second sacrificial anode (9) along tank body (6) length radially more than described first sacrificial anode (5) along tank body (6) length radially.
- A kind of low permeability pay water injection of horizontal well device the most according to claim 1, it is characterized in that: also include sedimentation basin (15), described sedimentation basin (15) is tube settler, and water delivery side of pump connects with the water inlet end of sedimentation basin (15), the water side of sedimentation basin (15) connects with the water inlet end of filtering tank (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610358953.4A CN105863562A (en) | 2016-05-27 | 2016-05-27 | Horizontal well water injector for low-permeability oil layer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610358953.4A CN105863562A (en) | 2016-05-27 | 2016-05-27 | Horizontal well water injector for low-permeability oil layer |
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| CN105863562A true CN105863562A (en) | 2016-08-17 |
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| CN201610358953.4A Pending CN105863562A (en) | 2016-05-27 | 2016-05-27 | Horizontal well water injector for low-permeability oil layer |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7857949B2 (en) * | 2008-01-29 | 2010-12-28 | Bernard Closset | Sacrificial anode with resistor assembly for metal tank corrosion protection |
| CN202810697U (en) * | 2012-10-25 | 2013-03-20 | 大庆开发区东油新技术有限公司 | Downhole pipeline anti-corrosion bracelet type positive pole |
| CN104911604A (en) * | 2015-06-11 | 2015-09-16 | 中国石油集团川庆钻探工程有限公司工程技术研究院 | Oil-field water injection pipeline inner wall anticorrosion device and replacement method |
| CN105888632A (en) * | 2016-05-27 | 2016-08-24 | 成都北方石油勘探开发技术有限公司 | Oil-well injector |
| CN205876273U (en) * | 2016-05-27 | 2017-01-11 | 成都北方石油勘探开发技术有限公司 | A water injection structure for low permeability pay horizontal well |
-
2016
- 2016-05-27 CN CN201610358953.4A patent/CN105863562A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7857949B2 (en) * | 2008-01-29 | 2010-12-28 | Bernard Closset | Sacrificial anode with resistor assembly for metal tank corrosion protection |
| CN202810697U (en) * | 2012-10-25 | 2013-03-20 | 大庆开发区东油新技术有限公司 | Downhole pipeline anti-corrosion bracelet type positive pole |
| CN104911604A (en) * | 2015-06-11 | 2015-09-16 | 中国石油集团川庆钻探工程有限公司工程技术研究院 | Oil-field water injection pipeline inner wall anticorrosion device and replacement method |
| CN105888632A (en) * | 2016-05-27 | 2016-08-24 | 成都北方石油勘探开发技术有限公司 | Oil-well injector |
| CN205876273U (en) * | 2016-05-27 | 2017-01-11 | 成都北方石油勘探开发技术有限公司 | A water injection structure for low permeability pay horizontal well |
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Application publication date: 20160817 |