CN208669278U - Adopt the submersible electric pump tubing string of centre in a kind of envelope both ends - Google Patents
Adopt the submersible electric pump tubing string of centre in a kind of envelope both ends Download PDFInfo
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- CN208669278U CN208669278U CN201821440484.1U CN201821440484U CN208669278U CN 208669278 U CN208669278 U CN 208669278U CN 201821440484 U CN201821440484 U CN 201821440484U CN 208669278 U CN208669278 U CN 208669278U
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- oil pipe
- packer
- perforated interval
- electric pump
- casing
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Abstract
Intermediate submersible electric pump tubing string is adopted the utility model discloses a kind of envelope both ends, including the casing being fixed in well, top perforated interval is set on casing, middle part perforated interval, the lower part perforated interval below the perforated interval of top are also set up on casing, it further include top oil pipe, pod, lower part oil pipe in casing, top oil pipe is connected to well head；Submersible electric pump group is set in pod；First packer is set between top perforated interval and middle part perforated interval, the second packer is arranged in middle part perforated interval and lower part perforated interval, first packer, the second packer are used to the annular space between packing casing and lower part oil pipe, aperture is set on the lower part oil pipe between the first packer, the second packer, and silk plug is arranged in the bottom end of lower part oil pipe.The utility model realizes the purpose that original perforated interval reservoir will not be injured while centre is singly adopted at packing both ends to the intermediate perforated interval for solving the problems, such as not only to pollute upper and lower two perforated interval reservoirs in the prior art but also injury needs to produce.
Description
Technical field
The utility model relates to petroleum production engineering fields, and in particular to adopt the submersible electric pump tubing string of centre in a kind of envelope both ends.
Background technique
Domestic and international many oil fields possess two sets and two sets or more of oil reservoir, mostly use the complete well of casing cementing greatly.Generally in order to
Preferably exploitation effect, often using from below to up, the thinking of layer-by-layer mining, that is to say, that first penetrate out and produce bury it is most deep
Oil reservoir waits this layer of production effect to separate most deep perforated interval using the method for grout off or mechanical packing when being deteriorated, so
Penetrate one layer for opening above afterwards and continue production exploitation, also referred to as on return exploitation.If three sets or three sets or more of oil reservoir, just with such
Push away, successively on be raw again production.But it is fully open and only need to produce the feelings of intermediate oil reservoir also to have three sets of oil reservoirs sometimes
Condition, traditional method is exactly to use upper and lower two perforated intervals of grout off when encountering such case, then penetrates out intermediate perforation again
Continue to produce after section, the shortcomings that this way is exactly that grout off not only polluted two perforated intervals up and down, but also injure
The intermediate perforated interval for needing to produce.
Utility model content
Intermediate submersible electric pump tubing string is adopted, the purpose of this utility model is to provide a kind of envelope both ends to solve for three sets
Oil reservoir is fully open and when only needing to exploit intermediate oil reservoir, the development scheme of the prior art not only pollutes two perforated intervals storages up and down
The problem of intermediate perforated interval that layer and injury need to produce, realization can be insulated while centre is singly adopted at both ends and will not be injured
The purpose of original perforated interval reservoir.
The utility model is achieved through the following technical solutions:
Intermediate submersible electric pump tubing string is adopted at a kind of envelope both ends, including the casing being fixed in well, in described sleeve pipe in setting
Portion's perforated interval, which is characterized in that middle part perforated interval, the lower part perforated interval below the perforated interval of top are also set up on casing, also
Including top oil pipe, the pod, lower part oil pipe being located in casing, the top oil pipe is connected to well head, pod up and down
Both ends are connect with the top of the bottom end of top oil pipe, lower part oil pipe respectively；Submersible electric pump group is set in pod；The top is penetrated
First packer is set between hole section and middle part perforated interval, the second packer is arranged in the middle part perforated interval and lower part perforated interval,
First packer, the second packer are used to the annular space between packing casing and lower part oil pipe, the first packer, the second envelope
Aperture is set on the lower part oil pipe between device, and the bottom end of the lower part oil pipe is located at below the second packer, and lower part oil pipe
Bottom end be arranged silk plug.
For the intermediate perforated interval for not only polluting two perforated interval reservoirs up and down in the prior art but also injury needs to produce
The problem of, intermediate submersible electric pump tubing string is adopted the utility model proposes a kind of envelope both ends, using pod by submersible electric pump group cover
Enter wherein, the upper end of pod is connect with the bottom end of top oil pipe, and the lower end of pod is connect with the top of lower part oil pipe, therefore
Top oil pipe and lower part oil pipe are connected by pod.Submersible electric pump group is the prior art, former for lifting in well
Oil, this will not be repeated here.In the utility model, top perforated interval is the most shallow oil layer section present position of buried depth, and this programme is applicable in
In the oil reservoir locating for the perforated interval of top be completed exploitation, the interval stratum energy or close to it is exhausted in the case of, need at this time
The oil reservoir of lower section, i.e. oil reservoir corresponding to the perforated interval of middle part are developed, need not employing lower part perforation temporarily simultaneously again
It is used when Reservoir Section corresponding to section.By the first packer packing every top perforated interval and middle part perforated interval, thus no longer right
Reservoir corresponding to the perforated interval of top is exploited, similarly, by the second packer packing every lowest part oil layer section, thus not
Reservoir corresponding to the perforated interval of lower part is exploited.It is arranged on lower part oil pipe between first packer, the second packer and opens
Silk plug is arranged in the bottom end in hole, lower part oil pipe, therefore formation fluid is merely able to from the lower part between the first packer, the second packer
Enter inside oil pipe in aperture on oil pipe, therefore in tubular column structure provided by this programme, exploitation position is only that middle part is penetrated
Reservoir Section corresponding to hole section both stopped the debilitating exploitation for reservoir corresponding to the perforated interval of top, and in turn ensure the
All reservoirs below two packers are not all employed, so that realizing envelope both ends singly adopts intermediate production method.When middle part is penetrated
Reservoir Section stratum corresponding to hole section is exhausted, when needing to employ Reservoir Section corresponding to the perforated interval of lower part, it is only necessary to from lower part oil pipe
Top increase lower part oil pipe overall length, make lower part oil pipe with aperture part be located at the second packer lower section.This is practical
It is novel thoroughly abandoned traditionally return exploitation or under return grout off technique used in recovery process, will not be to having exploited oil
Interval brings any pollution, it can be ensured that the skin factor around pit shaft maintains to stablize.
Preferably, the submersible electric pump group includes the electric pump being electrically connected to each other, submersible motor, and submersible motor is electric pump confession
The outlet mouth of electricity, electric pump is connected to the bottom end of top oil pipe, and motor protecter is additionally provided on submersible motor, and submersible motor passes through electricity
Cable is powered from well head.Cable conveys electric energy to submersible motor, so that submersible motor works, submersible motor works to provide to electric pump and move
Power, so that electric pump works, to be lifted in-place oil to well head by electric pump.Motor protecter can occur in submersible motor
The situations such as overload, phase shortage, stall, short circuit, over-voltage, under-voltage, electric leakage, three-phase imbalance, overheat, bearing wear, rotor bias
When, it is alarmed or is protected, submersible motor is avoided to break down and oil mining is caused to lag.Motor protecter is for protecting electricity
Machine belongs to the highly developed prior art, and this will not be repeated here, any motor protecter that can be realized to electric motor protecting
For in this programme.
Preferably, towards shaft bottom direction, the submersible motor is located at below electric pump the suction inlet of the electric pump.The suction of electric pump
Entrance is towards shaft bottom direction, it is ensured that crude oil can smoothly enter into.Submersible motor is located at below electric pump, and submersible motor is avoided to increase electric pump
Output load.
Preferably, the cable is from well head from the annular space between casing and top oil pipe in tripping in well.
Preferably, the lower part oil pipe between the first packer, the second packer is set as screen casing.It can not only using screen casing
Cumbersome work of the scene to oil pipe aperture is avoided, also has great meaning at the anti-blocking aspect of sand control.The screen casing is preferably wrapping wire
Screen casing.
The utility model compared with prior art, has the following advantages and benefits:
1, intermediate submersible electric pump tubing string is adopted at a kind of envelope both ends of the utility model, is penetrated by the first packer packing every top
Hole section and middle part perforated interval, to no longer be exploited to reservoir corresponding to the perforated interval of top；By the second packer packing every
The oil layer section of lowest part, to not exploited to reservoir corresponding to the perforated interval of lower part.Tubing string knot provided by this programme
In structure, exploitation position is only Reservoir Section corresponding to the perforated interval of middle part, both stopped for storage corresponding to the perforated interval of top
The debilitating exploitation of layer, in turn ensures that all reservoirs below the second packer are not all employed, so that it is single to realize envelope both ends
Adopt intermediate production method.
2, intermediate submersible electric pump tubing string is adopted at a kind of envelope both ends of the utility model, thoroughly abandoned traditionally return exploitation or under
Grout off technique used in recovery process is returned, any pollution will not be brought to oil layer section has been exploited, it can be ensured that pit shaft
The skin factor of surrounding maintains to stablize.
3, intermediate submersible electric pump tubing string is adopted at a kind of envelope both ends of the utility model, using doing for pod connection lower part oil pipe
Method avoids lower part tubing string weight and acts directly in submersible electric pump group, and then avoids the damage to submersible electric pump group, favorably
In the service life of submersible electric pump group.
Detailed description of the invention
Attached drawing described herein is used to provide to further understand the utility model embodiment, constitutes the one of the application
Part does not constitute the restriction to the utility model embodiment.In the accompanying drawings:
Fig. 1 is the structural schematic diagram of the utility model specific embodiment.
Label and corresponding parts title in attached drawing:
1- casing, the top 2- oil pipe, 3- cable, 4- electric pump, 5- suction inlet, 6- motor protecter, 7- pod, 8- latent oil
Motor, the lower part 9- oil pipe, 10- aperture, 11- silk plug, the top 12- perforated interval, the middle part 13- perforated interval, the lower part 14- perforated interval, 15-
First packer, the second packer of 16-.
Specific embodiment
For the purpose of this utility model, technical solution and advantage is more clearly understood, below with reference to embodiment and attached drawing,
The utility model is described in further detail, and the exemplary embodiment and its explanation of the utility model are only used for explaining this
Utility model is not intended to limit the scope of the present invention.
Embodiment 1:
Intermediate submersible electric pump tubing string is adopted at a kind of envelope both ends as shown in Figure 1, described including the casing 1 being fixed in well
Top perforated interval 12 is set on casing 1, the middle part perforated interval 13 positioned at 12 lower section of top perforated interval, lower part are also set up on casing 1
Perforated interval 14, further includes top oil pipe 2, pod 7, lower part oil pipe 9 in casing 1, and the top oil pipe 2 is connected to well
Mouthful, the upper and lower ends of pod 7 are connect with the top of the bottom end of top oil pipe 2, lower part oil pipe 9 respectively；Setting is latent in pod 7
Oily electric pump group；First packer 15, the middle part perforated interval 13 are set between the top perforated interval 12 and middle part perforated interval 13
Second packer 16 is set with lower part perforated interval 14, first packer 15, the second packer 16 are used to packing 1 and of casing
Aperture 10 is arranged on the lower part oil pipe 9 between the first packer 15, the second packer 16 for annular space between lower part oil pipe 9, described
The bottom end of lower part oil pipe 9 is located at 16 lower section of the second packer, and silk plug 11 is arranged in the bottom end of lower part oil pipe 9.
Embodiment 2:
Intermediate submersible electric pump tubing string is adopted at a kind of envelope both ends as shown in Figure 1, and the submersible electric pump group includes mutually being electrically connected
Electric pump 4, the submersible motor 8 connect, submersible motor 8 are the power supply of electric pump 4, and the outlet mouth of electric pump 4 is connected to the bottom end of top oil pipe 2,
Motor protecter 6 is additionally provided on submersible motor 8, submersible motor 8 is powered by cable 3 from well head.The suction inlet 5 of the electric pump 4
Towards shaft bottom direction, the submersible motor 8 is located at 4 lower section of electric pump.The cable 3 is from well head between casing 1 and top oil pipe 2
Annular space in tripping in well.Lower part oil pipe 9 between first packer 15, the second packer 16 is set as screen casing.
Above-described specific embodiment, to the purpose of this utility model, technical scheme and beneficial effects carried out into
One step is described in detail, it should be understood that being not used to limit the foregoing is merely specific embodiment of the present utility model
Determine the protection scope of the utility model, within the spirit and principle of the utility model, any modification for being made equally is replaced
It changes, improve, should be included within the scope of protection of this utility model.
Claims (5)
1. intermediate submersible electric pump tubing string is adopted at a kind of envelope both ends, including the casing (1) being fixed in well, described sleeve pipe is set on (1)
Set top perforated interval (12), which is characterized in that the middle part perforated interval below top perforated interval (12) is also set up on casing (1)
(13), lower part perforated interval (14) further include top oil pipe (2), pod (7), lower part oil pipe (9) in casing (1), institute
State top oil pipe (2) and be connected to well head, the upper and lower ends of pod (7) respectively with the bottom end of top oil pipe (2), lower part oil pipe
(9) top connection；Submersible electric pump group is set in pod (7)；The top perforated interval (12) and middle part perforated interval (13) it
Between be arranged the first packer (15), the middle part perforated interval (13) and lower part perforated interval (14) setting the second packer (16), institute
State the first packer (15), the second packer (16) be used to packing casing (1) and lower part oil pipe (9) between annular space, first
Aperture (10) are set on lower part oil pipe (9) between packer (15), the second packer (16), the bottom of the lower part oil pipe (9)
End is located at below the second packer (16), and silk plug (11) are arranged in the bottom end of lower part oil pipe (9).
2. intermediate submersible electric pump tubing string is adopted at a kind of envelope both ends according to claim 1, which is characterized in that the latent oil electricity
Pump group includes the electric pump (4) being electrically connected to each other, submersible motor (8), and submersible motor (8) is that electric pump (4) power, outside electric pump (4)
Row's mouth is connected to the bottom end of top oil pipe (2), is additionally provided on submersible motor (8) motor protecter (6), submersible motor (8) passes through
Cable (3) is powered from well head.
3. intermediate submersible electric pump tubing string is adopted at a kind of envelope both ends according to claim 2, which is characterized in that the electric pump
(4) towards shaft bottom direction, the submersible motor (8) is located at below electric pump (4) suction inlet (5).
4. intermediate submersible electric pump tubing string is adopted at a kind of envelope both ends according to claim 2, which is characterized in that the cable
(3) from well head from the annular space between casing (1) and top oil pipe (2) in tripping in well.
5. intermediate submersible electric pump tubing string is adopted at a kind of envelope both ends according to claim 1, which is characterized in that the first packer
(15), the lower part oil pipe (9) between the second packer (16) is set as screen casing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821440484.1U CN208669278U (en) | 2018-09-04 | 2018-09-04 | Adopt the submersible electric pump tubing string of centre in a kind of envelope both ends |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821440484.1U CN208669278U (en) | 2018-09-04 | 2018-09-04 | Adopt the submersible electric pump tubing string of centre in a kind of envelope both ends |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208669278U true CN208669278U (en) | 2019-03-29 |
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ID=65842759
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821440484.1U Active CN208669278U (en) | 2018-09-04 | 2018-09-04 | Adopt the submersible electric pump tubing string of centre in a kind of envelope both ends |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208669278U (en) |
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2018
- 2018-09-04 CN CN201821440484.1U patent/CN208669278U/en active Active
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