CN108204207A - Sand control completion tubing string - Google Patents
Sand control completion tubing string Download PDFInfo
- Publication number
- CN108204207A CN108204207A CN201711338315.7A CN201711338315A CN108204207A CN 108204207 A CN108204207 A CN 108204207A CN 201711338315 A CN201711338315 A CN 201711338315A CN 108204207 A CN108204207 A CN 108204207A
- Authority
- CN
- China
- Prior art keywords
- integral joint
- casing
- joint casing
- tubing string
- box cupling
- 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.)
- Pending
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
- E21B17/08—Casing joints
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/02—Surface sealing or packing
- E21B33/03—Well heads; Setting-up thereof
- E21B33/04—Casing heads; Suspending casings or tubings in well heads
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/13—Methods or devices for cementing, for plugging holes, crevices, or the like
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/06—Valve arrangements for boreholes or wells in wells
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/14—Obtaining from a multiple-zone well
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
- E21B43/24—Enhanced recovery methods for obtaining hydrocarbons using heat, e.g. steam injection
Abstract
The invention discloses a kind of sand control completion tubing string, oil-gas mining technical field, completion tubular column includes：Original oil well casing；The extension hanger being suspended in original oil well casing, hanger is interior to have casing bruising rubber plug；The integral joint casing section being connected on extension hanger, integral joint casing section are formed by more casing connections, are connected through a screw thread between casing；Set is closed in the well cementation being connected in integral joint casing section, and well cementation closing set, which can realize integral joint casing section, is opened and closed and can connect the space between integral joint casing intersegmental part and the borehole wall and integral joint casing；The cement block piece being set in integral joint casing section；Be connected to integral joint casing section lower end without box cupling sieve tube segment, be connected between no box cupling sieve tube segment and integral joint casing section by screw thread.The application can ensure the internal diameter of completion tubular column, so that later stage production, well stimulation and workover treatment can be carried out.
Description
Technical field
The present invention relates to oil-gas mining technical field, more particularly to a kind of sand control completion tubing string.
Background technology
For the oil well that tail pipe after window sidetracking and overhaul is reinforced, need to carry out it if original well shakes out phenomenon
Secondary sand control treatment.After the prior art reinforces completion generally by advanced end of line pipe, then sand control construction is carried out, aforesaid operations
Disadvantage is：1st, job execution is of high cost；2nd, the casing maximum of Φ 177.8mm (7 ") can hang Φ 139.7mm's (51/2 ")
Liner completion, sand control is carried out in the tail pipe of Φ 139.7mm (51/2 ") can reduce drainage area, reduction oil well output；3rd, sand control
The internal diameter of casing can be caused to reduce after operation so that major diameter measure tool all can not tripping in, limit the later stage production, increase
Production measure and the implementation of workover treatment.Therefore, it is necessary to research and develop a kind of new completion tubular column to ensure the internal diameter of completion tubular column, so as to
Ensure steam drive injection well demixing injection-production and big pump it is strong the realization of techniques such as take out and meet steam drive and the techniques such as demixing injection-production
Scheme requirement.
Invention content
In order to overcome the drawbacks described above of the prior art, the technical problem to be solved is that provide one kind for the embodiment of the present invention
Sand control completion tubing string can ensure the internal diameter of completion tubular column, so that later stage production, well stimulation and workover treatment can be able to
Implement.
The specific technical solution of the embodiment of the present invention is：
A kind of sand control completion tubing string, the completion tubular column include：
Original oil well casing；
The extension hanger being suspended in original oil well casing, the hanger have casing bruising rubber plug；
The integral joint casing section being connected on the extension hanger, the diameter of the integral joint casing is less than described original
The diameter of oil well casing, the integral joint casing section are formed by more casing connections, are connected through a screw thread between described sleeve pipe；
Set is closed in the well cementation being connected in the integral joint casing section, and set is closed in the well cementation can be to the no box cupling set
Pipeline section, which is realized, is opened and closed and can connect the space between the integral joint casing intersegmental part and the borehole wall and the integral joint casing, institute
Stating casing bruising rubber plug enables to the space between the integral joint casing intersegmental part and the borehole wall and the integral joint casing to break
It opens；
The cement block piece being set in the integral joint casing section, the cement block piece can be by the no box cupling sets
Gap between pipeline section and the borehole wall is isolated；
Be connected to the integral joint casing section lower end without box cupling sieve tube segment, the no box cupling sieve tube segment and the no box cupling
It is connected between casing section by screw thread.
In a preferred embodiment, the cement block piece along far from the integral joint casing section direction simultaneously
The extension of upward direction, the cement block piece can offset with the borehole wall.
In a preferred embodiment, the diameter of the no box cupling sieve tube segment and the diameter of the integral joint casing section
It is equal.
In a preferred embodiment, the well cementation is closed set and is included：Well cementation close set main body, be arranged on it is described solid
Well closes the closing valve covered in main body, the blind plate for being arranged on the closing valve lower end, and the closing valve can connect the no box cupling
Inside the casing section and space between the borehole wall and the integral joint casing.
In a preferred embodiment, the maximum outside diameter of described sleeve pipe remains unchanged, the outside of described sleeve pipe upper end
On wall there is the first stepped guiding surface, screw thread is offered on the first stepped guiding surface, described sleeve pipe lower end
On madial wall there is the second stepped guiding surface, screw thread is offered on the second stepped guiding surface.
In a preferred embodiment, the cement block piece is located at below the well cementation closing set, the nothing connects
Bind round sieve tube segment more than position.
In a preferred embodiment, the end of the no box cupling sieve tube segment is connected with guide shoe.
In a preferred embodiment, the no box cupling sieve tube segment and the integral joint casing section pass through drilling rod and side
Drilling rod is lowered into the predeterminated position of oil well.
In a preferred embodiment, the no box cupling sieve tube segment and the integral joint casing section are by promoting short circuit
It is connect with elevator.
In a preferred embodiment, as a diameter of 177.8mm of described sleeve pipe, the integral joint casing section
Maximum outside diameter is 139.7mm, and maximum inner diameter 121.36mm, the maximum outside diameter of the no box cupling sieve tube segment is 139.7mm, maximum
Internal diameter is 121.36mm.
A kind of operating method according to any of the above-described sand control completion tubing string includes the following steps：
The extension hanger connected, the integral joint casing section, the well cementation are closed by drilling rod and kelly bar
Close set, the no box cupling sieve tube segment passes through the original oil well casing G.I.H precalculated position；
By high pressure liquid or lift the tubing string extension hanger and the original oil well casing anchoring；
Inject cement into the original oil well casing, the cement closes set from the well cementation and flows out to the borehole wall and described
Space between integral joint casing, so that the cement block piece is close to Well-wall sealer；
Drilling rod with the drilling rod bruising rubber plug is headed into tubing string, makes the drilling rod bruising rubber plug and extension hanger
On casing bruising rubber plug can and and lock, and block it is described well cementation close set so that the integral joint casing intersegmental part and the borehole wall
Space between the integral joint casing disconnects；
The blind plate of the well cementation closing set is drilled so that the nothing by the drilling rod and the drill bit for being connected to drilling rod bottom
Box cupling casing section is opened.
Technical scheme of the present invention has following notable advantageous effect：
Sand control completion tubing string in the application is by using integral joint casing section and the combination without box cupling sieve tube segment, maximum limit
The internal diameter that ensure that completion tubular column of degree, i.e. integral joint casing section and the internal diameter without box cupling sieve tube segment, thereby may be ensured that steam
The realization of the techniques such as drive injection well demixing injection-production and the strong pumping of big pump, meets the process programs such as steam drive and demixing injection-production to tubing string
The requirement of internal diameter, the implementation that (increasing) production measure and workover treatment are given birth to for the later stage provide condition.Meanwhile casing and cement block piece
Above well section can carry out well cementing of cement, can by after sidetracked hole and casing damaged well overhaul tail pipe reinforce well tail pipe reinforce and
Sand control treatment is once completed, in this way, not only having reduced job execution cost, and having increased the intrinsic intensity of pit shaft but also can prevent upper strata from pushing up
It alters under water, moreover it is possible to realize effective sand control of production well section.
With reference to following explanation and attached drawing, only certain exemplary embodiments of this invention is disclosed in detail, specifies the original of the present invention
Reason can be in a manner of adopted.It should be understood that embodiments of the present invention are not so limited in range.In appended power
In the range of the spirit and terms of profit requirement, embodiments of the present invention include many changes, modifications and are equal.For a kind of reality
The feature that the mode of applying is described and/or shown can be made in a manner of same or similar in one or more other embodiments
With, with the feature in other embodiment it is combined or substitute other embodiment in feature.
Description of the drawings
Attached drawing described here is only used for task of explanation, and is not intended to limit model disclosed by the invention in any way
It encloses.In addition, shape and proportional sizes of each component in figure etc. are only schematical, the understanding of the present invention is used to help, and
It is not the specific shape and proportional sizes for limiting each component of the present invention.Those skilled in the art under the teachings of the present invention, can
Implement the present invention to select various possible shapes and proportional sizes as the case may be.
Fig. 1 is the structure diagram of sand control completion tubing string in the embodiment of the present invention；
Fig. 2 is the structure diagram of integral joint casing section in sand control completion tubing string in the embodiment of the present invention.
The reference numeral of the figures above：
1st, original oil well casing；2nd, extension hanger；3rd, integral joint casing section；31st, the first stepped guiding surface；32、
Second stepped guiding surface；4th, set is closed in well cementation；41st, valve is closed；42nd, blind plate；5th, cement block piece；6th, without box cupling screen casing
Section；7th, guide shoe；8th, cement；9th, oil reservoir.
Specific embodiment
With reference to the drawings and the description of the specific embodiments of the present invention, the details of the present invention can clearly be understood.But
It is the specific embodiment of invention described herein, is only used for explaining the purpose of the present invention, and cannot understands in any way
Into being limitation of the present invention.Under the teachings of the present invention, technical staff is contemplated that the arbitrary possible change based on the present invention
Shape, these are regarded as belonging to the scope of the present invention.It should be noted that when element is referred to as " being set to " another yuan
Part, it can be directly on another element or there may also be elements placed in the middle.When an element is considered as " connection "
Another element, it can be directly to another element or may be simultaneously present centering elements.Term " installation ",
" connected ", " connection " should be interpreted broadly, for example, it may be inside mechanical connection or electrical connection or two elements
Connection, can be directly connected, can also be indirectly connected by intermediary, for the ordinary skill in the art,
The concrete meaning of above-mentioned term can be understood as the case may be.Term as used herein " vertical ", " horizontal ",
For illustrative purposes only, it is unique embodiment to be not offered as " on ", " under ", "left", "right" and similar statement.
Unless otherwise defined, all of technologies and scientific terms used here by the article and belong to the technical field of the application
The normally understood meaning of technical staff is identical.The term used in the description of the present application is intended merely to description tool herein
The purpose of the embodiment of body, it is not intended that in limitation the application.Term as used herein "and/or" includes one or more
The arbitrary and all combination of relevant Listed Items.
In order to ensure the internal diameter of completion tubular column, so that later stage production, well stimulation and workover treatment can be able to reality
It applies, proposes a kind of sand control completion tubing string in this application, Fig. 1 is the structural representation of sand control completion tubing string in the embodiment of the present invention
Figure, as shown in Figure 1, the completion tubular column can include：Original oil well casing 1；The tail pipe being suspended in original oil well casing 1 hangs
Hanging device 2；The integral joint casing section 3 being connected on the extension hanger 2, the diameter of the integral joint casing is less than described original
The diameter of oil well casing 1, the integral joint casing section 3 are formed by more casing connections, are connected through a screw thread between described sleeve pipe；
Set 4 is closed in the well cementation being connected in the integral joint casing section 3, and the well cementation closes set 4 and integral joint casing section 3 can be realized
Opening and closing；The cement block piece 5 being set in the integral joint casing section 3, the cement block piece 5 can be by the no box cupling sets
Gap between pipeline section 3 and the borehole wall is isolated；Be connected to 3 lower end of integral joint casing section without box cupling sieve tube segment 6, it is described
It is connected between no box cupling sieve tube segment 6 and the integral joint casing section 3 by screw thread.
Sand control completion tubing string in the application is maximum by using integral joint casing section 3 and the combination without box cupling sieve tube segment 6
The internal diameter that ensure that completion tubular column of limit, i.e. integral joint casing section 3 and the internal diameter without box cupling sieve tube segment 6, thereby may be ensured that
The realization of the techniques such as steam drive injection well demixing injection-production and the strong pumping of big pump, meets the process programs such as steam drive and demixing injection-production to pipe
The requirement of the internal diameter of column, the implementation for later stage production, well stimulation and workover treatment provide condition.Meanwhile casing and cement
The well section of more than 5 block piece can carry out well cementing of cement, and tail pipe after sidetracked hole and casing damaged well overhaul can be reinforced to the tail of well
Pipe is reinforced and sand control treatment is once completed, in this way, not only having reduced job execution cost, and having increased the intrinsic intensity of pit shaft but also can prevent
Only upper strata top is altered under water, moreover it is possible to realize effective sand control of production well section.
In order to be better understood from the sand control completion tubing string in the application, it will be further explained and said below
It is bright.Sand control completion tubing string in the application is suitable for long well section, serious casing damaged well and sidetracked hole etc., as shown in Figure 1, this is complete
Original oil well casing 1 in well casing column is the larger-size casing used in original oil well, and the production layer of original oil well is oil
Layer 9, now in the original oil well uplifting window sidetracking so as to form sidetracked hole, and tripping in sand control pipe is right simultaneously in the sidetracked hole
The tubing string is cemented the well, to form sand control completion tubing string.Extension hanger 2 is provided in the original oil well casing 1, the tail pipe
There is casing bruising rubber plug, the lower end of extension hanger 2 is connected with integral joint casing section 3 in hanger 2.Extension hanger 2
Main operational principle is to generate powerful motive force by high pressure liquid or lift tubing string and back-off, so that extension hanger 2 is uniform
The larger-size casing used in spreading slip insert, slip insert and original oil well plays the role of anchoring, real while anchoring
It now gives up, equipped with releasing gadget is forced to ensure to be sent into smoothly putting aside between tubing string and completion tubular column, oil well upper end is drawn after giving up
Angle diameter reaches maximum value, for example, the set of φ 139.7mm can be led to from the casing inner diameter of the original oil well of φ 177.8mm
Bore, production operation tubing string after the tubing string completion to be facilitated smoothly to remove.
The diameter of integral joint casing section 3 is less than the diameter of original oil well casing 1, and integral joint casing section 3 is connected by more casings
It connects, is connected through a screw thread between described sleeve pipe.In order to enable the diameter of integral joint casing section 3 is when two casings are connected
It will not increase, i.e. the maximum outside diameter of described sleeve pipe remains unchanged, and has first stepped to lead on the lateral wall of described sleeve pipe upper end
To inclined-plane 31, the reduced diameter of the first stepped guiding surface 31 is opened up on the first stepped guiding surface 31
There is screw thread, there is the second stepped guiding surface 32, the second stepped guiding surface 32 on the madial wall of described sleeve pipe lower end
Reduced diameter, offer screw thread on the second stepped guiding surface 32.By the screw thread of this special step type,
Without using box cupling when enabling to connect between casing and casing, and junction diameter will not increase when two casings are connected
Greatly, in this way, it can directly pass through original oil well casing 1.
Well cementation is closed set 4 and is connected in the integral joint casing section 3, the set that can be connected in integral joint casing section 3
Between pipe and casing, it can also be connected at the end of integral joint casing section 3.Set 4 is closed in the well cementation can specifically include：Gu
Well closes 4 main bodys of set, the closing valve 41 being arranged in well cementation closing 4 main bodys of set, is arranged on 41 lower end of the closing valve
Blind plate 42, the closing valve 41 can connect 3 inside of integral joint casing section and the sky between the borehole wall and the integral joint casing
Between.When closing the unlatching of valve 41, closing on valve 41, there is trepanning can make 3 inside of integral joint casing section and the borehole wall and the no box cupling
Space between casing.When implementing cement operations, cement 8 is inputted in integral joint casing section 3, cement 8 is by closing valve 41
3 inside of integral joint casing section and the space between the borehole wall and the integral joint casing are flowed into be carried out to integral joint casing section 3
It is fixed.Blind plate 42 then can be used for stopping up when inputting cement 8 to integral joint casing section 3, and cement 8 is into no box cupling sieve tube segment 6.
After entire tubing string is fixed, by drilling rod and the drill bit of drilling rod bottom can be connected to drill blind plate 42, so as to fulfill
Tubing string it is unimpeded.
The hanger has casing bruising rubber plug, and described sleeve pipe bruising rubber plug and drilling rod bruising rubber plug are used cooperatively can
So that 3 inside of integral joint casing section and the space between the borehole wall and the integral joint casing disconnect.When needs are to closing valve
41 when being closed, and drilling rod bruising rubber plug is set on drilling rod, and drilling rod bruising rubber plug is used cooperatively with casing bruising rubber plug,
It is downward with 8 one road of cement in construction work, it, can be by the cement 8 in integral joint casing section 3 all by solid during downwards
The closing valve 41 that well closes set 4 is pressed out to outside integral joint casing section 3.To finally the trepanning for closing valve 41 be blocked, so that boring
Bar bruising rubber plug continues to play a part of to separate cementing concrete 8 and well killing fluid in casing with the cooperation of casing bruising rubber plug.Above-mentioned
During well cementation, it can not stay residual cement 8 in the integral joint casing section 3 of 42 top of blind plate.
Cement block piece 5 is set in the integral joint casing section 3, and the cement block piece 5 is located at the well cementation and closes
Less than 4 set, no more than 6 position of box cupling sieve tube segment.The cement block piece 5 is along the separate integral joint casing section 3
Direction and the extension of upward direction can be in substantially an inverted umbrella shape, can together lead to integral joint casing section 3
It crosses in the casing tripping in well of original oil well, when in well, the cement block piece 5 can offset with the borehole wall.In this way, when note
When entering cement and being cemented the well, cement block piece 5 is constantly increased due to pressure and then is constantly expanded to borehole wall direction, and then be close to well
Wall seals, and the gap of casing and the borehole wall prevents cementing concrete 8 from being downwardly into no box cupling sieve tube segment 6.Under the effect of the pressure,
Cement 8 can be full of the space between the borehole wall of more than 5 cement block piece and the integral joint casing, and the process of above-mentioned well cementation is
It can ensure do not occur the sky for not filling out cement 8 in the space between the borehole wall of more than 5 cement block piece and the integral joint casing
Gap greatly improves well cementation success rate and cementing quality, and can prevent upper strata top from altering under water, realizes the effective of production well section
Sand control.
No box cupling sieve tube segment 6 is connected to 3 lower end of integral joint casing section, can be connected directly between integral joint casing section
The lower end of 3 final stage casings can also be connected to the lower end that set 4 is closed in well cementation.The no box cupling sieve tube segment 6 connects with the nothing
It is connected between cuff pipeline section 3 by screw thread.There is the stepped guiding surface of third, the third on the lateral wall of the screen casing upper end
The reduced diameter of stepped guiding surface offers screw thread, the screen casing lower end on the stepped guiding surface of third
Madial wall on have quadravalence scalariform guiding surface, the reduced diameter of the fourth order scalariform guiding surface, the fourth order
Screw thread is offered on scalariform guiding surface.By the screw thread of this special step type, enable to connect between screen casing and screen casing
When without using box cupling, without using box cupling when being connected between screen casing and casing, and junction is straight when two screen casings are connected
Diameter will not increase, in this way, alloing casing of the integral joint casing section 3 directly by original oil well, and make it as far as possible
Greatest diametrical dimension may be used.For the ease of in no 6 tripping in oil well of box cupling sieve tube segment, in the end of no box cupling sieve tube segment 6
Guide shoe 7 can be connected with.
In a kind of specific embodiment, as a diameter of 177.8mm of original oil well casing 1, using in this application
Technical solution, the maximum outside diameter of the integral joint casing section 3 can reach 139.7mm, maximum inner diameter 121.36mm, relatively
It answers, the maximum outside diameter of the no box cupling sieve tube segment 6 can reach 139.7mm, maximum inner diameter 121.36mm.In above-mentioned internal diameter
Under, it can eliminate due to the small influence to pump setting depth of 3 internal diameter of integral joint casing section, for later stage production, well stimulation and well workover
The implementation of operation is provided convenience condition.
The operating process of sand control completion tubing string in the application can be as follows：Due to the integral joint casing and nothing in the application
Box cupling is not present in box cupling screen casing, therefore, it is necessary to be connected by promoting short circuit with the elevator, then is carried out after being lifted by elevator
Connection.The extension hanger 2 connected, integral joint casing section 3, well cementation are closed by set 4 by drilling rod and kelly bar, sieved without box cupling
6 G.I.H precalculated position of pipeline section.It generates powerful motive force by high pressure liquid again or lifts tubing string and be buckled to, so that tail tube hanging
The larger-size original oil well casing 1 used in 2 uniform spreading slip insert of device, slip insert and original oil well plays anchoring and makees
With, it realizes and gives up while anchoring, ensure to be sent into smoothly putting aside between tubing string and completion tubular column equipped with pressure releasing gadget,
Oil well upper end draws angle diameter and reaches maximum value after giving up.Cement 8 is injected into original oil well casing 1 to carry out cement operations,
Cement 8 enters integral joint casing section 3, and due to the presence of blind plate 42, cement 8 is flowed out from the closing valve 41 that well cementation is closed in set 4
Space to the borehole wall and the integral joint casing, when tripping in cement 8 is cemented the well, cement block piece 5 due to pressure not
Disconnected to increase and then constantly expanded to borehole wall direction, and then be close to Well-wall sealer, the gap of casing and the borehole wall causes cementing concrete 8 not
No box cupling sieve tube segment 6 can be downwardly into.Under the effect of the pressure, cement 8 can be full of the borehole wall and the institute of more than 5 cement block piece
State the space between integral joint casing.Then it needs to close valve, by drilling rod rubber plug after cementing concrete all injection drilling rod
It is interior and then downward with 8 one road of cement to insert people's drilling rod, during downwards, cement mortar in drilling rod is shaved, in hanger position with covering
Pipe rubber plug can and and it is locked continue downward, the cement 8 in integral joint casing section 3 is all passed through to cement the well and closes the closing valve for covering 4
41 are pressed out to outside integral joint casing section 3.Finally can and and it be locked, while tripping in the casing bruising rubber plug on extension hanger 2
The trepanning for closing valve 41 is blocked, so that drilling rod bruising rubber plug rises with casing bruising rubber plug in casing separates cementing concrete 8
With the effect of well killing fluid.During above-mentioned well cementation, residual cement 8 is not stayed in the integral joint casing section 3 of 42 top of blind plate.When
When needing to carry out later stage life (increasings) production measure and workover treatment etc., by drilling rod and the drill bit of drilling rod bottom is connected to by blind plate
42 drill, in this way, being connected inside entire tubing string.The well cementation carried out by above-mentioned steps to the part of no more than 6 box cupling sieve tube segment,
It is primary complete tail pipe after casing damaged well overhaul and reinforce the tail pipe of well reinforce and sand control treatment, reduce job execution cost, again
It ensure that the internal diameter of completion tubular column to greatest extent, and then can ensure the works such as steam drive injection well demixing injection-production and the strong pumping of big pump
The realization of skill meets the scheme requirement of the techniques such as steam drive and demixing injection-production.
All articles and reference disclosed, including patent application and publication, for various purposes by quoting knot
Together in this.Identified element, ingredient, component or step and reality should be included by describing the term " substantially by ... form " of combination
Other elements, ingredient, component or the step of the basic novel feature of the combination are not influenced in matter.Using term "comprising" or
" comprising " describes the combination of element here, ingredient, component or step it is also contemplated that substantially by these elements, ingredient, component
Or the embodiment that step is formed.Here by using term " can with ", it is intended to it is described any to illustrate that " can with " includes
Attribute is all optional.Multiple element, ingredient, component or step can be carried by single integrated component, ingredient, component or step
For.Alternatively, single integrated component, ingredient, component or step can be divided into multiple element, ingredient, component or the step of separation
Suddenly.Open "a" or "an" for describing element, ingredient, component or step do not say in order to exclude other elements, into
Point, component or step.
Each embodiment in this specification is described by the way of progressive, the highlights of each of the examples are with
The difference of other embodiment, just to refer each other for identical similar part between each embodiment.Above-described embodiment is only
Illustrate the technical concepts and features of the present invention, its object is to allow person skilled in the art that can understand present disclosure
And implement according to this, it is not intended to limit the scope of the present invention.All equivalence changes made according to spirit of the invention
Or modification, it should be covered by the protection scope of the present invention.
Claims (11)
1. a kind of sand control completion tubing string, which is characterized in that the completion tubular column includes：
Original oil well casing；
The extension hanger being suspended in original oil well casing, the hanger is interior to have casing bruising rubber plug；
The integral joint casing section being connected on the extension hanger, the diameter of the integral joint casing are less than the original oil well
The diameter of casing, the integral joint casing section are formed by more casing connections, are connected through a screw thread between described sleeve pipe；
Set is closed in the well cementation being connected in the integral joint casing section, and set is closed in the well cementation can be to the integral joint casing section
It realizes and is opened and closed and can connect the space between the integral joint casing intersegmental part and the borehole wall and the integral joint casing, the set
Pipe bruising rubber plug enables to the space between the integral joint casing intersegmental part and the borehole wall and the integral joint casing to disconnect；
The cement block piece being set in the integral joint casing section, the cement block piece can be by the integral joint casing sections
Gap between the borehole wall is isolated；
Be connected to the integral joint casing section lower end without box cupling sieve tube segment, the no box cupling sieve tube segment and the integral joint casing
It is connected between section by screw thread.
2. sand control completion tubing string according to claim 1, which is characterized in that the cement block piece is along far from the nothing
The direction of the box cupling casing section and extension of upward direction, the cement block piece can offset with the borehole wall.
3. sand control completion tubing string according to claim 1, which is characterized in that the diameter of the no box cupling sieve tube segment with it is described
The diameter of integral joint casing section is equal.
4. sand control completion tubing string according to claim 1, which is characterized in that the well cementation is closed set and included：Well cementation is closed
Set main body, the closing valve being arranged in the well cementation closing set main body, the blind plate for being arranged on the closing valve lower end, the closing
Valve can connect the space between the integral joint casing intersegmental part and the borehole wall and the integral joint casing.
5. sand control completion tubing string according to claim 1, which is characterized in that the maximum outside diameter of described sleeve pipe remains unchanged,
On the lateral wall of described sleeve pipe upper end there is the first stepped guiding surface, spiral shell is offered on the first stepped guiding surface
Line has the second stepped guiding surface on the madial wall of described sleeve pipe lower end, is opened up on the second stepped guiding surface
There is screw thread.
6. sand control completion tubing string according to claim 1, which is characterized in that the cement block piece is located at the well cementation and closes
It closes below set, the no box cupling sieve tube segment more than position.
7. sand control completion tubing string according to claim 1, which is characterized in that the end of the no box cupling sieve tube segment is connected with
Guide shoe.
8. sand control completion tubing string according to claim 1, which is characterized in that the no box cupling sieve tube segment and the no box cupling
Casing section is lowered into the predeterminated position of oil well by drilling rod and kelly bar.
9. sand control completion tubing string according to claim 1, which is characterized in that the no box cupling sieve tube segment and the no box cupling
Casing section is connect by promoting short circuit with elevator.
10. sand control completion tubing string according to claim 1, which is characterized in that as a diameter of 177.8mm of described sleeve pipe
When, the maximum outside diameter of the integral joint casing section is 139.7mm, maximum inner diameter 121.36mm, the no box cupling sieve tube segment
Maximum outside diameter is 139.7mm, maximum inner diameter 121.36mm.
11. a kind of operating method of sand control completion tubing string according to claim 1, which is characterized in that include the following steps：
By drilling rod and kelly bar by the extension hanger connected, the integral joint casing section, the well cementation close set,
The no box cupling sieve tube segment passes through the original oil well casing G.I.H precalculated position；
By high pressure liquid or lift the tubing string extension hanger and the original oil well casing anchoring；
Cement is injected into the original oil well casing, the cement flows out to the borehole wall from the well cementation closing set and the nothing connects
Space between cuff pipe, so that the cement block piece is close to Well-wall sealer；
Drilling rod with the drilling rod bruising rubber plug is headed into tubing string, is made on the drilling rod bruising rubber plug and extension hanger
Casing bruising rubber plug can and and lock, and block the well cementation and close and cover so that the integral joint casing intersegmental part and the borehole wall and institute
The space stated between integral joint casing disconnects；
The blind plate of the well cementation closing set is drilled so that the nothing by the drilling rod and the drill bit for being connected to the drilling rod bottom
Box cupling casing section is opened.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711338315.7A CN108204207A (en) | 2017-12-14 | 2017-12-14 | Sand control completion tubing string |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711338315.7A CN108204207A (en) | 2017-12-14 | 2017-12-14 | Sand control completion tubing string |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108204207A true CN108204207A (en) | 2018-06-26 |
Family
ID=62604685
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711338315.7A Pending CN108204207A (en) | 2017-12-14 | 2017-12-14 | Sand control completion tubing string |
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| Country | Link |
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| CN (1) | CN108204207A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110905477A (en) * | 2019-11-27 | 2020-03-24 | 赵景海 | Oil well structure with double well completion pipe columns and well completion method thereof |
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