CN207568578U - Self-flowing water injection pipe column - Google Patents
Self-flowing water injection pipe column Download PDFInfo
- Publication number
- CN207568578U CN207568578U CN201721550626.5U CN201721550626U CN207568578U CN 207568578 U CN207568578 U CN 207568578U CN 201721550626 U CN201721550626 U CN 201721550626U CN 207568578 U CN207568578 U CN 207568578U
- Authority
- CN
- China
- Prior art keywords
- oil
- oil pipe
- water
- tubing string
- flood suction
- 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.)
- Active
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 131
- 238000002347 injection Methods 0.000 title claims abstract description 43
- 239000007924 injection Substances 0.000 title claims abstract description 43
- 238000004519 manufacturing process Methods 0.000 claims abstract description 23
- 230000015572 biosynthetic process Effects 0.000 claims description 38
- 210000002445 nipple Anatomy 0.000 claims description 38
- 238000012360 testing method Methods 0.000 claims description 20
- 230000020477 pH reduction Effects 0.000 claims description 19
- 229910000831 Steel Inorganic materials 0.000 claims description 16
- 239000010959 steel Substances 0.000 claims description 16
- 239000004576 sand Substances 0.000 claims description 14
- 238000007789 sealing Methods 0.000 claims description 6
- 239000007787 solid Substances 0.000 claims description 4
- 239000012535 impurity Substances 0.000 claims description 3
- 230000010354 integration Effects 0.000 abstract description 6
- 239000003129 oil well Substances 0.000 abstract description 4
- 238000011084 recovery Methods 0.000 abstract description 3
- 238000000605 extraction Methods 0.000 abstract 1
- 238000005755 formation reaction Methods 0.000 description 35
- 239000000243 solution Substances 0.000 description 16
- 239000002253 acid Substances 0.000 description 9
- 238000000034 method Methods 0.000 description 8
- 230000035699 permeability Effects 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 238000007664 blowing Methods 0.000 description 5
- 230000007812 deficiency Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000012856 packing Methods 0.000 description 4
- 239000013589 supplement Substances 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- 238000004873 anchoring Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000013011 mating Effects 0.000 description 2
- 235000020681 well water Nutrition 0.000 description 2
- 239000002349 well water Substances 0.000 description 2
- 241000935974 Paralichthys dentatus Species 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000013505 freshwater Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Landscapes
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The utility model provides a self-flowing water injection pipe column, which comprises a sleeve and an oil pipe arranged in the sleeve, wherein an oil sleeve annulus is formed between the sleeve and the oil pipe, and the oil pipe is sequentially connected with an upper packer, an eccentric water distributor and a lower packer from top to bottom; the upper packer is arranged above the water producing layer, and the lower packer is arranged between the water producing layer and the oil producing layer; the eccentric water distributor comprises a plurality of water nozzles which can be selected and arranged in the eccentric water distributor, the water nozzles comprise at least two communicating water nozzles and at least one closed water nozzle, the communicating water nozzles are used for communicating the inner side and the outer side of an oil pipe when self-flowing water is injected, the closed water nozzles are used for separating the inner side and the outer side of the oil pipe when a water injection layer is acidified and self-flowing oil extraction is carried out, and different communicating water nozzles have different flow rates. The utility model provides a self-flowing water injection tubular column can realize self-flowing water injection, acidizing and the integration of blowout oil recovery, guarantees the high efficiency and the low cost of oil well production.
Description
Technical field
The utility model is related to oil well bets to adopt equipment technical field more particularly to a kind of flood suction tubing string.
Background technology
In oilfield development process, stratum energy constantly reduces, it is often necessary to inject water to supplement stratum energy and maintain oil
The stable yields in field.The water source of oilfield injection water is mainly that ground fresh water, water supply well water intaking and oil reservoir Produced Liquid are isolated at this stage
Water, the water at these water sources is both needed to establish mating pipe network is injected into water filling layer through water injecting pump, and the remote well in part is by mating water filling
The limitation of well pattern constrains oil-bearing stratum flooding exploitation.The hydromining of same well water yield formation can be gone out to be injected into water filling by flood suction technology
Layer realizes the supplement of stratum energy, because its economical and effective is increasingly becoming a kind of arbitrary way of conventional waterflooding.
Flood suction technique is mainly using blank tubing at this stage, i.e., without connecting other tools, the water of water yield formation on oil pipe
It is directly injected into stratum and is difficult to realize flow control, high-water-cut stage needs to change oil-producing tubing string if it need to recover the oil and recovers the oil.
Blank tubing flood suction technique can not achieve the control of injection rate, and larger to the damage of casing；It is needed during oil recovery
It replaces tubing string and carries out second completion, duty cycle is long；If water filling layer, which need to be acidified, in the injecting process need to use continuous oil
Pipe inspection fixed point acidification, complex process are costly.
Utility model content
The utility model provides a kind of flood suction tubing string, can realize flood suction, acidification and the one of oil flow production
Change, ensure the high efficiency and low cost of oil well production.
Flood suction tubing string provided by the utility model, it is described including casing and the oil pipe being arranged on inside described sleeve pipe
Oil jacket annular space is formed between casing and the oil pipe, the oil pipe is connected with upper packer, eccentric injection mandrel in turn from top to bottom
And lower packet；
The upper packer is arranged on above water yield formation, the lower packet be arranged on the water yield formation and oil-producing formation it
Between；
The eccentric injection mandrel includes that the multiple water nozzles being arranged in the eccentric injection mandrel, the multiple water nozzle can be selected
Including at least two connection water nozzles and at least one closing water nozzle, the connection water nozzle is used to connect the oil in flood suction
The interior outside of pipe, the closing water nozzle is used for the interior outside that the oil pipe is isolated in the acidification of water filling layer and oil flow production, different
The connection water nozzle has different flows.
The flood suction tubing string that the utility model embodiment provides, by replacing the water nozzle in eccentric injection mandrel, it can be achieved that
Duty cycle is shortened in flood suction, acidification and the integration of oil flow production, improves working efficiency.It is mended simultaneously by flood suction
It fills stratum energy and permeability is improved, and then improve tar productivity by acidifying strata.
Optionally, the eccentric injection mandrel further includes seating nipple and blanking plug, and the seating nipple is connected on the oil pipe,
The eccentric orfice for being provided in the seating nipple positioned at the seating nipple axis side and being connected with seating nipple outside, it is described stifled
It is interior and can be in the axial movement of seating nipple described in steel wire traction lower edge, with the into and out work that plug device is located at the eccentric orfice
Make cylinder, the water nozzle is located on the blanking plug.
Optionally, the lower packet is self-test sealing packer, and the side of suppressing set and test envelope of the lower packet
To identical.
Optionally, the upper packer is hydraulic packer；
When just being suppressed into the oil pipe, the upper packer is set, when being suppressed to the oil jacket annular space is counter, the upper envelope
Envelope is tested every device.
Optionally, the position being located at below the lower packet in the oil pipe is additionally provided with ball seat, and the ball seat leads to
The pin that crossing can cut is connect with the oil pipe.
Optionally, flood suction tubing string further includes：The first tubing anchor being arranged on the oil pipe, first tubing anchor
Positioned at the top of the upper packer, for by the tubing anchor in described sleeve pipe.
Optionally, flood suction tubing string further includes：Telescoping tube, the telescoping tube are connected on the oil pipe, and positioned at institute
State the top of the first tubing anchor.
Optionally, flood suction tubing string further includes：The second tubing anchor being arranged on the oil pipe, second tubing anchor
Positioned at the top of the lower packet, for by the tubing anchor in described sleeve pipe.
Optionally, flood suction tubing string further includes：Sand control screen, the sand control screen are arranged on the oil pipe bottom end, use
Enter the oil pipe in preventing solid impurity during oil flow production.
Optionally, the bottom end of the sand control screen is additionally provided with guide shoe silk plug.
The course of work of flood suction tubing string that the utility model embodiment provides is：To corresponding to water yield formation and production on casing
The position of oil reservoir carries out perforation and perforations adding；Oil pipe is lowered into casing, upper packer is made to be arranged on above water yield formation, lower packing
Device is arranged between water yield formation and oil-producing formation；The pitching into oil pipe, ball are dropped into ball seat；It just suppresses, sets down into oil pipe
Packer and upper packer；Continue just to suppress into oil pipe, the envelope channel of testing certainly of lower packet is opened, and envelope is tested in realization；To oil jacket
Counter in annular space to suppress, upper packer tests envelope；Continue just to suppress into oil pipe, the pin of ball seat is cut, and ball seat and ball fall into oil
Bottom of the tube；
During stratum energy deficiency, blanking plug is pulled out from the seating nipple of eccentric injection mandrel by steel wire, passing through steel wire will
Blanking plug with connection water nozzle is put into seating nipple, the water of water yield formation through oil jacket annular space, eccentric injection mandrel and connection water nozzle into
Enter oil pipe, inject stratum；
During stratum energy abundance, the blanking plug with connection water nozzle is dragged for from the seating nipple of eccentric injection mandrel by steel wire
Go out, put into the blanking plug with closing water nozzle in seating nipple by steel wire, the oil of oil-producing formation enters oil pipe and realizes blowing production；
When in-place permeability declines, blanking plug is pulled out from the seating nipple of eccentric injection mandrel by steel wire, passes through steel wire
Blanking plug with closing water nozzle is put into seating nipple, acid solution is injected into oil pipe, acid solution enters stratum and plays acidification.
The flood suction tubing string that the utility model embodiment provides, by salvaging blanking plug in eccentric injection mandrel and replacing water
Mouth, it can be achieved that flood suction, acidification and the integration of oil flow production, shorten duty cycle in the case of fixed tubular column, improves
Working efficiency.Meanwhile stratum energy is improved by flood suction, improve tar productivity.Flood suction tubing string sets, tests envelope
The process of packer and salvaging blanking plug is simple, easy to operate.Tubing anchor and telescoping tube have the function of to be anchored and compensation, can
It effectively prevent the wriggling of tubing string, extension tube column life.
Description of the drawings
It, below will be to embodiment or existing skill in order to illustrate more clearly of the utility model or the technical solution of the prior art
Attached drawing is briefly described needed in art description, it should be apparent that, the accompanying drawings in the following description is that this practicality is new
Some embodiments of type, for those of ordinary skill in the art, without having to pay creative labor, can be with
Other attached drawings are obtained according to these attached drawings.
Fig. 1 is the structure diagram of flood suction tubing string that the utility model embodiment provides；
Fig. 2 is the structure diagram of eccentric injection mandrel that the utility model embodiment provides.
Reference numeral：
1- casings；
2- oil pipes；
3- upper packers
4- eccentric injection mandrels；
41- seating nipples；
42- blanking plugs；
43- eccentric orfices；
5- lower packets；
6- ball seats；
The first tubing anchors of 7-；
8- telescoping tubes；
The second tubing anchors of 9-；
10- sand control screens；
11- guide shoe silk plugs；
100- water yield formations；
200- oil-producing formations.
Specific embodiment
To make the purpose of this utility model, technical solution and advantage clearer, below in conjunction in the utility model
The technical solution in the utility model is clearly and completely described in attached drawing, it is clear that described embodiment is this practicality
Novel part of the embodiment, instead of all the embodiments.Based on the embodiment in the utility model, ordinary skill people
Member's all other embodiments obtained without creative efforts belong to the model of the utility model protection
It encloses.
In the description of the present invention, it is to be appreciated that used term " " center ", " length ", " width ",
" thickness ", " top ", " bottom end ", " on ", " under ", "left", "right", "front", "rear", " vertical ", " level ", " interior ", " outer " " axis
To ", the indicating positions such as " circumferential direction " or position relationship be based on orientation shown in the drawings or position relationship, be for only for ease of description
The utility model and simplified description rather than instruction imply that signified position or original paper must be with specific orientation, Yi Te
Fixed construction and operation, therefore it is not intended that limitation to the utility model.
In addition, term " first ", " second " are only used for description purpose, and it is not intended that instruction or hint relative importance
Or the implicit quantity for indicating indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include one or more this feature." multiple " are meant that at least two in the description of the present invention, example
Such as two, three, unless otherwise specifically defined.
In the utility model unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " Gu
It is fixed " etc. should be interpreted broadly, such as can be fixedly connected or be detachably connected or be integrally formed；Can be machinery
Connection or electrical connection can communicate with one another；It can be directly connected, the indirect phase of intermediary can also be passed through
Even, the connection inside two elements or the interaction relationship of two elements can be made.For those of ordinary skill in the art
For, concrete meaning of the above-mentioned term in the utility model can be understood as the case may be.
In the utility model unless specifically defined or limited otherwise, fisrt feature second feature it " on " or it
" under " can be in direct contact including the first and second features, it is not to be in direct contact but lead to that can also include the first and second features
Cross the other characterisation contact between them.Moreover, fisrt feature second feature " on ", " top " and " above " including
One feature is right over second feature and oblique upper or is merely representative of fisrt feature level height higher than second feature.First is special
Sign second feature " under ", " lower section " and " below " including fisrt feature immediately below second feature and obliquely downward or only
Represent that fisrt feature level height is less than second feature.
Below with reference to the accompanying drawings the utility model and is described in conjunction with specific embodiments.
Embodiment one
Fig. 1 is the structure diagram of flood suction tubing string that the utility model embodiment provides, refering to what is shown in Fig. 1, this reality
With the flood suction tubing string of novel offer, including casing 1 and the oil pipe 2 being arranged on inside casing 1, shape between casing 1 and oil pipe 2
Into oil jacket annular space, oil pipe is connected with upper packer 3, eccentric injection mandrel 4 and lower packet 5 in turn from top to bottom；Upper packer 3 is set
It puts above water yield formation 100, lower packet 5 is arranged between water yield formation 100 and oil-producing formation 200；Eccentric injection mandrel 4 includes to select
One is arranged on multiple water nozzles in eccentric injection mandrel 4, and multiple water nozzles include at least two connection water nozzles and at least one closing water
Mouth, for connecting the interior outside of oil pipe 2 in flood suction, closing water nozzle is used to adopt in the acidification of water filling layer and blowing connection water nozzle
The interior outside of oil pipe 2 is isolated when oily, difference connection water nozzle has different flows.
In the present embodiment, the operation principle of flood suction tubing string is：By upper packer 3 and lower packet 5 by water yield formation
100 and the packing of oil-producing formation 200 open, flood suction tubing string can control to carry out from streamer by replacing the water nozzle in eccentric injection mandrel 4
Water, acidification and the different function of oil flow production.In the flood suction course of work, the water nozzle in eccentric injection mandrel 4 is connection water nozzle,
The water of water yield formation 100 enters by eccentric injection mandrel 4 in oil pipe 2, and injects stratum and supplement energy for oil-producing formation 200；Different
Connecting water nozzle has different flows, replaces the water that connection water nozzle can control injection stratum.During acidifying strata, by eccentric center water-distributing
Water nozzle in device 4 is changed to closing water nozzle, and acid solution is injected into oil pipe 2, and acid solution squeezes into stratum, and corrosion tamper restores and carries
The permeance property on high stratum.During oil flow production, the water nozzle in eccentric injection mandrel 4 is changed to closing water nozzle, the oil of oil-producing formation 200
Realize that blowing produces by oil pipe 2 under differential pressure action.
It should be noted that in Practical Project, flood suction and oil flow production can be carried out repeatedly, in stratum energy not
When sufficient, flood suction supplement energy is carried out, when stratum energy abundance, carries out oil flow production work, when stratum energy deficiency,
Repeat the work of previous step flood suction.Acidification work is then that solid matter blocking causes permeance property decline to be adopted in stratum
It takes, to improve stratum permeability energy, further achievees the effect that improve tar productivity.
In the present embodiment, the course of work of flood suction tubing string is：
S101, perforation and perforations adding are carried out to the position that water yield formation 100 and oil-producing formation 200 are corresponded on casing 1；
S102, oil pipe 2 is lowered into casing 1, upper packer 3 is made to be arranged on 100 top of water yield formation, lower packet 5 is set
It puts between water yield formation 100 and oil-producing formation 200；
S103, it sets and tests envelope lower packet 5 and upper packer 3；
When S104, stratum energy deficiency, the water nozzle in eccentric injection mandrel 4 is changed to connection water nozzle, the water of water yield formation 100
Stratum is injected by eccentric injection mandrel 4, replaces the flow that various sizes of connection water nozzle can control water filling；
When S105, stratum energy abundance, the water nozzle in eccentric injection mandrel 4 is changed to closing water nozzle, the oil of oil-producing formation 200
Blowing production is realized into oil pipe 2；
When S106, in-place permeability decline, the water nozzle in eccentric injection mandrel 4 is changed to closing water nozzle, is noted into oil pipe 2
Enter acid solution, acid solution enters stratum and plays acidification.
The flood suction tubing string that the utility model embodiment provides, by replacing the water nozzle in eccentric injection mandrel, it can be achieved that
Duty cycle is shortened in flood suction, acidification and the integration of oil flow production, improves working efficiency.It is mended simultaneously by flood suction
It fills stratum energy and permeability is improved, and then improve tar productivity by acidifying strata.
Embodiment two
Fig. 2 is the structure diagram of eccentric injection mandrel that the utility model embodiment provides, refering to what is shown in Fig. 2, bias is matched
Hydrophone 4 further includes seating nipple 41 and blanking plug 42, and seating nipple 41 is connected on oil pipe 2, is provided in seating nipple 41 positioned at work
Cylinder axis side and the eccentric orfice 43 with being connected outside seating nipple, blanking plug 42 are located in eccentric orfice 43 and can be under steel wire tractions
Along the axial movement of seating nipple 41, with into and out seating nipple, water nozzle is located on blanking plug 42.
Specifically, seating nipple 41 is connected on oil pipe 2, and 41 inside of seating nipple is communicated with the internal diameter of oil pipe 2, on seating nipple 41
The eccentric orfice 43 of setting, for placing blanking plug 42, eccentric orfice 43 also with seating nipple external connection.It can by throws in catcher such as steel wires
Blanking plug 42 is devoted oneself to work in cylinder 41 or is taken out from seating nipple 41.Water nozzle in blanking plug 42 can the company of being changed to as needed
Water flowing mouth or closing water nozzle.When in blanking plug 42 for connection water nozzle, the connection of 41 inside and outside of seating nipple, i.e., the water in oil jacket annular space can
Entered inside oil pipe 2 by connecting water nozzle；When water nozzle inside blanking plug 42 is closing water nozzle, the closing of 42 inside and outside of seating nipple,
Water i.e. in oil jacket annular space cannot enter inside oil pipe 2.
In the present embodiment, lower packet 5 is self-test sealing packer, and lower packet 5 set and test envelope suppress direction
It is identical.Self-test sealing packer is realized with the interference of 1 internal diameter of casing and operting differential pressure by the outer diameter of packer accessory and is sealed.To oil pipe 2
It inside just suppresses, lower packet 5 can be set, continuation is just suppressed, and the envelope channel of testing certainly inside lower packet 5 is opened, and envelope is tested in realization.
In the present embodiment, upper packer 3 is hydraulic packer.Hydraulic packer leans on fluid pressure compression packing part,
Packer accessory outer diameter is made to become larger and realize sealing.When just being suppressed into oil pipe 2, upper packer 3 is set, and is suppressed to oil jacket annular space is counter
When, upper packer 3 tests envelope.
The position for being located at the lower section of lower packet 5 in oil pipe 2 is additionally provided with ball seat 6, ball seat 6 by the pin that can cut with
Oil pipe 2 connects.Ball seat 6 sets and tests the supplementary structure of envelope for upper packer 3 and lower packet 5, in upper packer 3 and lower packing
Before device 5 is set, the first pitching into oil pipe 2 is needed, ball falls into ball seat, plays sealing function so that oily when being suppressed into oil pipe 2
The pressure of pipe 2 can constantly rise, to set upper packer 3 and lower packet 5.It sets and tests in upper packer 3 and lower packet 5
After envelope, continue to pressurize, ball seat 6 is cut with the pin that oil pipe 2 is connect, and ball seat 6 falls into 2 bottom of oil pipe with ball.It next, can
Carry out the work such as normal water filling, oil recovery, acidification.
In the present embodiment, the course of work of flood suction tubing string is：
S201, perforation and perforations adding are carried out to the position that water yield formation 100 and oil-producing formation 200 are corresponded on casing 1；
S202, oil pipe 2 is lowered into casing 1, upper packer 3 is made to be arranged on 100 top of water yield formation, lower packet 5 is set
It puts between water yield formation 100 and oil-producing formation 200；
S203, the pitching into oil pipe 2, ball are dropped into ball seat 6；
S204, it is just being suppressed into oil pipe 2, is setting lower packet 5 and upper packer 3；
S205, continue just suppressing into oil pipe 2, the envelope channel of testing certainly of lower packet 5 is opened, and envelope is tested in realization；To oil jacket ring
Counter in sky to suppress, upper packer 3 tests envelope；
S206, continue just suppressing into oil pipe 2, the pin of ball seat 6 is cut, and ball seat 6 and ball fall into 2 bottom of oil pipe；
When S207, stratum energy deficiency, blanking plug 42 is pulled out from the seating nipple 41 of eccentric injection mandrel 4 by steel wire,
The blanking plug 42 with connection water nozzle is put into seating nipple 41 by steel wire, the water of water yield formation 100 is matched through oil jacket annular space, bias
Hydrophone 4 and connection water nozzle enter oil pipe 2, inject stratum；
When S208, stratum energy abundance, by steel wire by the blanking plug 42 with connection water nozzle from the work of eccentric injection mandrel 4
It pulls out, is put into the blanking plug 42 with closing water nozzle in seating nipple 41 by steel wire, the oil of oil-producing formation 200 enters oil in cylinder 41
Pipe 2 realizes blowing production；
When S209, in-place permeability decline, blanking plug 42 is dragged for from the seating nipple 41 of eccentric injection mandrel 4 by steel wire
Go out, the blanking plug 42 with closing water nozzle is put into seating nipple 41 by steel wire, acid solution is injected into oil pipe 2, acid solution enters
Play acidification in stratum.
The flood suction tubing string that the utility model embodiment provides, by salvaging blanking plug in eccentric injection mandrel and replacing water
Mouth, it can be achieved that flood suction, acidification and the integration of oil flow production, shorten duty cycle in the case of fixed tubular column, improves
Working efficiency.Meanwhile stratum energy is improved by flood suction, improve tar productivity.Flood suction tubing string sets, tests envelope
The process of packer and salvaging blanking plug is simple, easy to operate.
Embodiment three
On the basis of above-described embodiment, with continued reference to shown in Fig. 1, flood suction tubing string provided in this embodiment also wraps
It includes：The first tubing anchor 7 being arranged on oil pipe 2, the first tubing anchor 7 are located at the top of upper packer 3, for oil pipe 2 to be anchored
On casing 1.Optionally, flood suction tubing string further includes：The second tubing anchor 9 being arranged on oil pipe 2, the second tubing anchor 9
In the top of lower packet 5, for oil pipe 2 to be anchored on casing 1.
During flood suction, acidification, oil flow production, the fluctuation of oil well internal pressure can lead to the wriggling of oil pipe 2, from
And easily cause the failure of upper packer 3 and lower packet 5.First is set respectively in the top of upper packer 3 and lower packet 5
7 and second tubing anchor 9 of tubing anchor, when pressurizeing into oil pipe 2, with the raising of pressure, the anchor fluke of tubing anchor is stretched out 2 anchor of oil pipe
It is scheduled on casing 1.The anchoring pressure of tubing anchor sets pressure less than packer, and therefore, tubing anchor is before packer setting
Realize the anchoring of oil pipe 2 and casing 1.In water filling and acidization, the first tubing anchor 7 and the second tubing anchor 9 can effectively be prevented
The only wriggling of tubing string, extension tube column life.
In the present embodiment, flood suction tubing string further includes：Telescoping tube 8, telescoping tube 8 are connected on oil pipe 2, and positioned at first
The top of tubing anchor 7.The inner/outer tube of telescoping tube 8 is connected by pin, and when pressurizeing into oil pipe 2, which is cut, telescoping tube
8 are in Telescoping, and the length of telescoping tube 8 carries out reasonable disposition according to water dumping rate, acidification discharge capacity and Liquid output.
In the present embodiment, flood suction tubing string further includes：Sand control screen 10, sand control screen 10 are arranged on 2 bottom end of oil pipe, use
Enter oil pipe 2 in preventing solid impurity during oil flow production.The wide variety of sand control screen 10 including cutting seam sieve tube, bores
The types such as hole sizer pipe, are not specifically limited herein.
Further, the bottom end of sand control screen 10 is additionally provided with guide shoe silk plug 11.Guide shoe silk plug is used to guide oil pipe 2 smooth
G.I.H, and for preventing ball seat 6 from falling into pit shaft.In fact, the acid solution warp injected when water during flood suction and acidification
Oil pipe 2 and sand control screen 10 enter oil jacket annular space, and then injection well bottom at sand control screen 10.It is oily from oil-producing during oil flow production
Layer 200 enters oil jacket annular space, enters inside oil pipe 2 through sand control screen 10, and then be transported to outside well through oil pipe 2.As it can be seen that oil pipe 2
End connection silk plug be necessary.
The flood suction tubing string that the utility model embodiment provides, by salvaging the blanking plug in eccentric injection mandrel and replacement
Water nozzle, it can be achieved that flood suction, acidification and the integration of oil flow production, shorten duty cycle, carry in the case of fixed tubular column
High working efficiency.Meanwhile stratum energy is improved by flood suction, improve tar productivity.Flood suction tubing string sets, tests
The process of sealed packer and salvaging blanking plug is simple, easy to operate.Tubing anchor and telescoping tube have the function of to be anchored and compensation,
It can effectively prevent the wriggling of tubing string, extension tube column life.
Finally it should be noted that：The above various embodiments is only to illustrate the technical solution of the utility model rather than it is limited
System；Although the utility model is described in detail with reference to foregoing embodiments, those of ordinary skill in the art should
Understand：It can still modify to the technical solution recorded in foregoing embodiments either to which part or whole
Technical characteristic carries out equivalent replacement；And these modifications or replacement, this practicality that it does not separate the essence of the corresponding technical solution are new
The range of each embodiment technical solution of type.
Claims (10)
1. a kind of flood suction tubing string, including casing and the oil pipe being arranged on inside described sleeve pipe, described sleeve pipe and the oil pipe
Between formed oil jacket annular space, which is characterized in that the oil pipe be connected in turn from top to bottom upper packer, eccentric injection mandrel and under
Packer；
The upper packer is arranged on above water yield formation, and the lower packet is arranged between the water yield formation and oil-producing formation；
The eccentric injection mandrel includes that the multiple water nozzles being arranged in the eccentric injection mandrel can be selected, and the multiple water nozzle includes
At least two connection water nozzles and at least one closing water nozzle, the connection water nozzle are used to connect the oil pipe in flood suction
Interior outside, the closing water nozzle are used for the interior outside that the oil pipe is isolated in the acidification of water filling layer and when oil flow production, described in difference
Connecting water nozzle has different flows.
2. flood suction tubing string according to claim 1, which is characterized in that the eccentric injection mandrel further include seating nipple and
Blanking plug, the seating nipple are connected on the oil pipe, are provided in the seating nipple positioned at the seating nipple axis side simultaneously
With the eccentric orfice connected outside the seating nipple, the blanking plug is located in the eccentric orfice and can be described in steel wire traction lower edge
The axial movement of seating nipple, with the into and out seating nipple, the water nozzle is located on the blanking plug.
3. flood suction tubing string according to claim 1, which is characterized in that the lower packet is self-test sealing packer,
And the lower packet set with test envelope to suppress direction identical.
4. flood suction tubing string according to claim 3, which is characterized in that the upper packer is hydraulic packer；
When just being suppressed into the oil pipe, the upper packer is set, when being suppressed to the oil jacket annular space is counter, the upper packer
Test envelope.
5. flood suction tubing string according to claim 4, which is characterized in that be located at the lower packet in the oil pipe
The position of lower section is additionally provided with ball seat, and the ball seat is connect by the pin that can be cut with the oil pipe.
6. according to claim 1-5 any one of them flood suction tubing strings, which is characterized in that further include：It is arranged on the oil
The first tubing anchor on pipe, first tubing anchor are located at the top of the upper packer, for by the tubing anchor in institute
It states on casing.
7. flood suction tubing string according to claim 6, which is characterized in that further include：Telescoping tube, the telescoping tube connection
On the oil pipe, and positioned at the top of first tubing anchor.
8. flood suction tubing string according to claim 7, which is characterized in that further include：Be arranged on the oil pipe
Two tubing anchors, second tubing anchor are located at the top of the lower packet, for by the tubing anchor in described sleeve pipe.
9. flood suction tubing string according to claim 1, which is characterized in that further include：Sand control screen, the sand control screen
The oil pipe bottom end is arranged on, for preventing solid impurity from entering the oil pipe during oil flow production.
10. flood suction tubing string according to claim 9, which is characterized in that the bottom end of the sand control screen is additionally provided with
Guide shoe silk plug.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721550626.5U CN207568578U (en) | 2017-11-20 | 2017-11-20 | Self-flowing water injection pipe column |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721550626.5U CN207568578U (en) | 2017-11-20 | 2017-11-20 | Self-flowing water injection pipe column |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207568578U true CN207568578U (en) | 2018-07-03 |
Family
ID=62690969
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721550626.5U Active CN207568578U (en) | 2017-11-20 | 2017-11-20 | Self-flowing water injection pipe column |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207568578U (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109882138A (en) * | 2017-12-06 | 2019-06-14 | 中国石油天然气股份有限公司 | Self-flowing water injection oil replacement exploitation device and method |
| CN110439510A (en) * | 2019-09-16 | 2019-11-12 | 中国石油化工股份有限公司 | A kind of method of layer-by-layer acidification seperated layer water injection |
| CN110485968A (en) * | 2019-09-16 | 2019-11-22 | 中国石油化工股份有限公司 | Two sections of level-one eccentric acid note integrated pipe columns |
| CN110578501A (en) * | 2019-09-19 | 2019-12-17 | 中国石油化工股份有限公司 | Multi-stratum layer-by-layer acidification and layered water injection method |
| CN110735618A (en) * | 2018-07-19 | 2020-01-31 | 中国石油天然气股份有限公司 | Oil extraction and water injection string |
| CN111287716A (en) * | 2020-02-25 | 2020-06-16 | 中国海洋石油集团有限公司 | Downhole flow-assisting separate-layer water injection pipe column for offshore oil field |
| CN114320253A (en) * | 2022-02-07 | 2022-04-12 | 成都汉科石油技术有限公司 | Enhanced water injection oil extraction device and method for ultra-deep fracture-cavity reservoir oil well |
| CN114320255A (en) * | 2022-02-07 | 2022-04-12 | 成都汉科石油技术有限公司 | Self-flowing water injection device and method for ultra-deep fracture-cavity reservoir oil well |
| CN116771310A (en) * | 2023-08-22 | 2023-09-19 | 大庆市华禹石油机械制造有限公司 | Water distributor for petroleum exploitation |
-
2017
- 2017-11-20 CN CN201721550626.5U patent/CN207568578U/en active Active
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109882138A (en) * | 2017-12-06 | 2019-06-14 | 中国石油天然气股份有限公司 | Self-flowing water injection oil replacement exploitation device and method |
| CN110735618A (en) * | 2018-07-19 | 2020-01-31 | 中国石油天然气股份有限公司 | Oil extraction and water injection string |
| CN110439510A (en) * | 2019-09-16 | 2019-11-12 | 中国石油化工股份有限公司 | A kind of method of layer-by-layer acidification seperated layer water injection |
| CN110485968A (en) * | 2019-09-16 | 2019-11-22 | 中国石油化工股份有限公司 | Two sections of level-one eccentric acid note integrated pipe columns |
| CN110578501A (en) * | 2019-09-19 | 2019-12-17 | 中国石油化工股份有限公司 | Multi-stratum layer-by-layer acidification and layered water injection method |
| CN110578501B (en) * | 2019-09-19 | 2021-04-13 | 中国石油化工股份有限公司 | Multi-stratum layer-by-layer acidification and layered water injection method |
| CN111287716A (en) * | 2020-02-25 | 2020-06-16 | 中国海洋石油集团有限公司 | Downhole flow-assisting separate-layer water injection pipe column for offshore oil field |
| CN111287716B (en) * | 2020-02-25 | 2022-06-03 | 中国海洋石油集团有限公司 | Downhole flow-assisting separate-layer water injection pipe column for offshore oil field |
| CN114320253A (en) * | 2022-02-07 | 2022-04-12 | 成都汉科石油技术有限公司 | Enhanced water injection oil extraction device and method for ultra-deep fracture-cavity reservoir oil well |
| CN114320255A (en) * | 2022-02-07 | 2022-04-12 | 成都汉科石油技术有限公司 | Self-flowing water injection device and method for ultra-deep fracture-cavity reservoir oil well |
| CN116771310A (en) * | 2023-08-22 | 2023-09-19 | 大庆市华禹石油机械制造有限公司 | Water distributor for petroleum exploitation |
| CN116771310B (en) * | 2023-08-22 | 2023-12-29 | 大庆市华禹石油机械制造有限公司 | Water distributor for petroleum exploitation |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN207568578U (en) | Self-flowing water injection pipe column | |
| CN103261573B (en) | Wellbore apparatus and method for zonal isolation and flow-control | |
| CN103874827B (en) | Fluid filtering device and the method completing well for well | |
| US7841398B2 (en) | Gravel packing apparatus utilizing diverter valves | |
| CN105507865B (en) | The method of refracturing for oil gas water well | |
| US11408264B2 (en) | Volumetric fracturing method of temporarily plugging and diverting through functional slick water with oil displacement agent injected simultaneously | |
| CN101864921A (en) | Well completion and oil production string of horizontal well and well completion and oil production processes thereof | |
| WO2021022908A1 (en) | Method for replacing filling layer without changing pipe string, flowback service device and well completion structure | |
| CN101233294A (en) | System for cyclic injection and production from a well | |
| CN207093047U (en) | Negative pressure-gas lift oil production pipe column | |
| CN201705276U (en) | Well completion and flow string of horizontal well | |
| CN110242264A (en) | A kind of packing method and completion structure for single-well injection-production | |
| CN210685949U (en) | Well completion structure for injection and production in same well | |
| CN101769271B (en) | Deep-well oil-extraction external flow-channel direct and reverse circulation freely-throwing jet injector oil production method and device | |
| CN109751020A (en) | Intelligent separate-layer water injection and separate-layer oil production pipe column of horizontal well and process method | |
| CN105649578A (en) | Vertical-well double-layer partial-pressure commingling method and device for coalbed methane | |
| CN205936557U (en) | Water injection and oil production pipe column | |
| CN207686692U (en) | separate injection pipe column for horizontal well | |
| CN104453806A (en) | Method for removing sandstone condensate gas reservoir water lock through nitrogen injection | |
| WO2022183898A1 (en) | Method for operating water injection well, and water injection well | |
| CN203239303U (en) | Exploitation device for injection and production in the same well | |
| EA008643B1 (en) | Wellbore gravel packing apparatus and method | |
| CN201090199Y (en) | Two-stage three-section separate injection string capable of preventing water injection layer section from reverse-discharging and channeling | |
| CN107654207A (en) | Section method for fixed-point preset sand plug of coiled tubing horizontal well | |
| CN109138932A (en) | A kind of chemical packer segmentation control water completion method of straight well filling combination |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |