CN106437618A - Subsection well completion tubular column, subsection reforming tubular column and oil well reforming device - Google Patents
Subsection well completion tubular column, subsection reforming tubular column and oil well reforming device Download PDFInfo
- Publication number
- CN106437618A CN106437618A CN201610806233.XA CN201610806233A CN106437618A CN 106437618 A CN106437618 A CN 106437618A CN 201610806233 A CN201610806233 A CN 201610806233A CN 106437618 A CN106437618 A CN 106437618A
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- China
- Prior art keywords
- packer
- well completion
- tubing string
- sectional well
- segmentation
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- 239000003129 oil well Substances 0.000 title claims abstract description 14
- 238000002407 reforming Methods 0.000 title abstract description 9
- 230000011218 segmentation Effects 0.000 claims description 63
- 230000009466 transformation Effects 0.000 claims description 61
- 238000012856 packing Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 10
- 230000008569 process Effects 0.000 abstract description 8
- 239000003921 oil Substances 0.000 description 16
- 239000007788 liquid Substances 0.000 description 13
- 230000004048 modification Effects 0.000 description 11
- 238000012986 modification Methods 0.000 description 11
- 239000012634 fragment Substances 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 230000001681 protective effect Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000005553 drilling Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 230000002265 prevention Effects 0.000 description 3
- 210000000664 rectum Anatomy 0.000 description 3
- 230000001131 transforming effect Effects 0.000 description 3
- XQCFHQBGMWUEMY-ZPUQHVIOSA-N Nitrovin Chemical compound C=1C=C([N+]([O-])=O)OC=1\C=C\C(=NNC(=N)N)\C=C\C1=CC=C([N+]([O-])=O)O1 XQCFHQBGMWUEMY-ZPUQHVIOSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000008034 disappearance Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000010734 process oil Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000012954 risk control Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000000844 transformation Methods 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/06—Valve arrangements for boreholes or wells in wells
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The invention discloses a subsection well completion tubular column, subsection reforming tubular column and oil well reforming device. The oil and gas well reforms the technical field of well completion. The subsection well completion tubular column compromises a plurality of connected subsection well completion units which each of compromises an open hole packer and a casing sliding sleeve connected with the open hole packer, and a first packer or a liner hanger which one end of is connected with one end of a plurality of the subsection well completion. The subsection reforming tubular column compromises a downhole switch valves, a sliding sleeve switch arranged at the lower end of the downhole switch valves, a second packer arranged at the lower end of the sliding sleeve switch, a connecting pipe arranged at the lower end of the second packer and the side wall of the connecting pipe is provided with a hole, an inverted valve arranged at the lower end of the connecting pipe and the flow direction of the inverted valve is from down to up side, and a third packer arranged at the lower end of the inverted valve. The subsection well completion tubular column, subsection reforming tubular column and oil well reforming device can carry out any number of subsection of an open hole in the process of reforming.
Description
Technical field
The present invention relates to Oil/gas Well transformation completion technique field, more particularly to a kind of sectional well completion tubing string, segmentation transformation pipe
Post and oil well transformation device.
Background technology
In Oil/gas Well reservoir reconstruction with completion technique field, typically generally well-completing process is transformed using segmentation.Using point
Section transformation well-completing process is because generally individually there is a certain degree of anisotropism in payzone section, if generally transforming work using big section
Skill can then cause modification liquid to concentrate the preferable well section of entrance permeability, and really need the poor well section of the permeability that transforms to obtain
Less than effectively transformation.And this drawback can be then prevented effectively from using segmentation reforming technology so that modification liquid can be more equal
Weighing apparatus ground is entered and is modified well section.Open hole well currently for some long well sections is generally spaced pitching sliding sleeve using open hole packer
To realize multistage subsection transformation and well-completing process.One long open hole well section is exactly separated into several by the function of open hole packer
Segment, so as to the modification liquid certain per a bit of distribution, so as to reach the purpose of balanced fractured.The function of pitching sliding sleeve
It is each section of order that opens during control transformation, in transformation process, from pipe, puts into various sizes of ball from small to large successively, pumping
Corresponding sliding sleeve will be opened to after down-hole from bottom to top one by one, so as to realize the purpose of piecewise transformation, after the completion of all transforming again
Induced flow operation completion.
But, the internal ball seat of the completion tubular column for adopting in well-completing process undergauge step by step is transformed in current segmentation, and this not only leads
Latus rectum very little in pipe is caused, meanwhile, ball seat causes the number of fragments of whole tubing string limited with the differential relation of pitching so that the completion
Tubing string can only be less to number of fragments in transformation process oil well be suitable for, it is impossible to meet need number of fragments larger oil well transformation.
Content of the invention
In order to overcome the drawbacks described above of prior art, embodiment of the present invention technical problem to be solved there is provided one kind
Sectional well completion tubing string, segmentation transformation tubing string and oil well transformation device, which can solve the problem that open hole well number of fragments in transformation process
Few problem.
The concrete technical scheme of the embodiment of the present invention is：
Tubing string is transformed in a kind of segmentation, including：
Underground switching valve；It is arranged on the sliding sleeve switch of the underground switching valve lower end；It is arranged on the sliding sleeve switch lower end
The second packer；The connecting tube of the second packer lower end is arranged on, the side wall of the connecting tube opens up hole；Arrange
In the ball-and-seat of the connecting tube lower end, the flow direction of the ball-and-seat is for from lower to upper；It is arranged on the of the ball-and-seat lower end
Three packers.
In one preferred embodiment, the upper end of the underground switching valve is provided with can make the interior of segmentation transformation tubing string
The circulating valve that portion is communicated with the outside.
In one preferred embodiment, the first oil is provided between second packer and the 3rd packer
Pipe.
In one preferred embodiment, the upper end of the circulating valve is provided with the second oil pipe.
In one preferred embodiment, second packer be across every packer.
In one preferred embodiment, the 3rd packer is mechanical packer.
In one preferred embodiment, between the sliding sleeve switch and second packer, hydraulic anchor is provided with.
Device transformed by a kind of oil well, including：Tubing string and a kind of sectional well completion tubing string are transformed in arbitrary described segmentation as described above,
The sectional well completion tubing string includes：Multiple sectional well completion units being connected, each sectional well completion unit include open hole packer and
The sliding sleeve of bushing being connected with the open hole packer；One end be connected with one end of multiple sectional well completion units first
Packer or extension hanger.
In one preferred embodiment, be connected with one end of multiple sectional well completion units when one end is
During one packer, first packer is hanging packer.
In one preferred embodiment, first packer or the extension hanger and the sectional well completion list
The sleeve pipe being provided between unit for allocating distance.
In one preferred embodiment, the other end of multiple sectional well completion units is connected with guide shoe.
A kind of sectional well completion tubing string, including：Multiple sectional well completion units being connected, each sectional well completion unit includes naked
Eye packer and the sliding sleeve of bushing being connected with the open hole packer, the sectional well completion unit is used for transforming tubing string with segmentation
It is adapted；The first packer or extension hanger that one end is connected with one end of multiple sectional well completion units.
In one preferred embodiment, be connected with one end of multiple sectional well completion units when one end is
During one packer, first packer is hanging packer.
In one preferred embodiment, first packer or the extension hanger and the sectional well completion list
The sleeve pipe being provided between unit for allocating distance.
In one preferred embodiment, the other end of multiple sectional well completion units is connected with guide shoe.
Technical scheme has following notable beneficial effect：
1st, the sectional well completion tubing string in the embodiment of the present invention is connected further using multiple open hole packer tubular distance piece sliding sleeves
The segmentation of any section can be carried out to relatively long open hole well section, this kind of segmented mode is not limited by quantity.Between multiple open hole packers
It is sequentially connected every sliding sleeve of bushing, after sectional well completion tubing string enters barefoot interval in well, open hole packer sets, so adjacent naked
Eye packer between sliding sleeve of bushing corresponding with the barefoot interval that each section is set, and then can pass through sliding sleeve of bushing only to
This section of barefoot interval carries out the transformation of respective degrees.The number of fragments of sectional well completion tubing string is unrestricted, is more beneficial for long open hole
Well section segments balanced fractured, improves correctional effect.
2nd, the segmentation transformation tubing string in the embodiment of the present invention is used cooperatively with above-mentioned sectional well completion tubing string, is changed by this segmentation
Tubing post can open the sliding sleeve of bushing in sectional well completion tubing string successively, then transform tubing string to a sliding sleeve of bushing by this segmentation
Corresponding barefoot interval injects modification liquid.When having injected modification liquid, after the completion of deblocking, when will drag this segmentation transformation tubing string, well
This segmentation transformation tubing string closing so can be prevented effectively from when this segmentation transformation tubing string is dragged well in managing by lower switch valve
Spray.
3rd, the latus rectum of sectional well completion tubing string can be matched with the sleeve pipe in original well, and then ensures the complete of whole well
Property.Meanwhile, the repeatable switch of sliding sleeve of bushing, harness the river to later stage control production, control water, segmentation transformation and other operations are pre- again
Technology window is stayed.
Description of the drawings
Accompanying drawing described here is only used for task of explanation, and is not intended to by any way limiting model disclosed by the invention
Enclose.In addition, the shape of each part of in figure and proportional sizes etc. are only schematically, the understanding of the present invention is used to help, and
It is not shape and the proportional sizes for specifically limiting each part 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 structural representation of sectional well completion tubing string in the embodiment of the present invention.
Fig. 2 is the structural representation that in the embodiment of the present invention, tubing string is transformed in segmentation.
The reference of the figures above：
1st, protective casing；2nd, guide shoe；3rd, the first packer；4th, open hole packer；5th, sliding sleeve of bushing；6th, the second oil pipe；7、
Circulating valve；8th, underground switching valve；9th, sliding sleeve switch；10th, hydraulic anchor；11st, the second packer；12nd, connecting tube；13rd, the first oil pipe；
14th, ball-and-seat；15th, the 3rd packer.
Specific embodiment
In conjunction with the description of accompanying drawing and the specific embodiment of the invention, the details of the present invention can be clearly understood.But
It is, the specific embodiment of invention described herein to be only used for explaining the purpose of the present invention, and can not understand by any way
Become is limitation of the present invention.Under the teachings of the present invention, technical staff is contemplated that the arbitrarily possible change based on the present invention
Shape, these are regarded as belonging to the scope of the present invention.
In order to solve the above problems, applicant proposed a kind of sectional well completion tubing string, Fig. 1 is segmentation in the embodiment of the present invention
The structural representation of completion tubular column, as shown in figure 1, which includes：Multiple sectional well completion units being connected, each sectional well completion list
Unit includes open hole packer 4 and the sliding sleeve of bushing 5 that is connected with the open hole packer 4, sectional well completion unit be used for hereafter
In segmentation transformation tubing string be adapted；The first packer 3 that one end is connected with one end of multiple sectional well completion units or
Extension hanger.
In said structure, be connected with one end of multiple sectional well completion units when one end is the first packer 3
When, first packer 3 can be hanging packer.When the first packer 3 is hanging packer, which can preferably and well
Complete to set between interior protective casing 1 so that sectional well completion tubing string can be connected to the lower end of protective casing 1.
Whole sectional well completion tubing string is carried to down-hole precalculated position by drilling rod, sets the first packer 3 or tail pipe is outstanding
Hanging device so that the upper end of sectional well completion tubing string is set in the lower end of protective casing 1, is then specifically sat according to open hole packer 4
Open hole packer 4 in each sectional well completion unit is set by envelope mode so that the barefoot interval of 1 lower section of protective casing is multiple
Open hole packer 4 is separated into multiple segments, then drilling rod is slipped out of the hand and risen out.When sectional well completion tubing string enters well, all sleeve pipes are slided
Set 5 is disposed as closed mode.After above-mentioned sectional well completion tubing string is provided with, one is formed in barefoot interval and sealed by multistage bore hole
Every the structure of 4 tubular distance piece sliding sleeve 5 of device, this makes whole Open-Hole Section obtain effective support, while whole barefoot interval is divided
Several segments are divided into, each segment further can be connected with well by the switch of sliding sleeve of bushing 5, it is also possible to isolated with well.
In one preferred embodiment, first packer 3 or the extension hanger and the sectional well completion
The sleeve pipe being provided between unit for allocating distance.Sectional well completion unit can be adjusted with described by the length of the sleeve pipe
One packer 3 or the distance of the extension hanger, can be preferable so as to sectional well completion unit after entering under sectional well completion tubing string
Match with barefoot interval.
In one preferred embodiment, the other end of multiple sectional well completion units is connected with guide shoe 2.The guide shoe
2 lower ends for being arranged on sectional well completion unit, when drilling rod carries sectional well completion tubing string lower going-into-well, it is complete which can effectively reduce segmentation
Well casing post lower end is occurred by the situation of card.
In order to solve the above problems, applicant also proposed a kind of segmentation being used in combination with above-mentioned sectional well completion tubing string
Transformation tubing string, Fig. 2 is the structural representation that in the embodiment of the present invention, tubing string is transformed in segmentation, as shown in Fig. 2 which includes：Down-hole is opened
Close valve 8；It is arranged on the sliding sleeve switch 9 of 8 lower end of the underground switching valve；It is arranged on the second packing of 9 lower end of the sliding sleeve switch
Device 11；The connecting tube 12 of 11 lower end of the second packer is arranged on, the side wall of the connecting tube 12 opens up hole；It is arranged on
The ball-and-seat 14 of 12 lower end of the connecting tube, the flow direction of the ball-and-seat 14 is for from lower to upper；It is arranged under the ball-and-seat 14
3rd packer 15 at end.
In order to above-mentioned segmentation transformation tubing string is further appreciated that, which will be further explained below and illustrate.Down-hole switch
Valve 8 is prior art, and its concrete structure refer to the drawing and pressing type all-pass in the Chinese patent of Application No. 201521008105.8
Footpath underground switching valve 8.Underground switching valve 8 is used for controlling the switch in tubing string, can be set when segmentation transformation tubing string enters well
It is set to the state of opening or closing.When underground switching valve 8 is when in open mode, when entering well, completion fluid can be automatically into segmentation
In transformation tubing string, such segmentation transformation tubing string under enter during need not be to liquid feeding pad in pipe；When underground switching valve 8 is in pass
During closed state, enter in isolation inside and outside well casing post, when entering well, the demand of product can be asked to carry out to entering well casing post according to induced flow
Partly empty, realize carrying out before transformation product is sought, be assessment offer foundation after single well productivity assessment and reservoir reconstruction.But no matter well
Lower switch valve 8 enters well with which kind of state, can be activated when the 3rd packer 15 sets pressurization so as in during stretching
The working condition of Time Delay Opening when closing, pressurizeing.Above-mentioned operation principle not only ensure that tubing string enter well during well control risk
Control a difficult problem, and segmentation transformation tubing string is being closed in pipe during dragging between two sections all the time, Time Delay Opening
Also the reservoir reconstruction for this well section has reserved the time window of abundance, can then arrange blowout preventer, so outside segmentation transformation tubing string
Blowout can effectively be prevented, it is ensured that the safety of whole operation.
Sliding sleeve switch 9 is used for opening corresponding sliding sleeve of bushing 5 in sectional well completion tubing string when tubing string is dragged upwards so that should
The barefoot interval of segment is connected with well, to transform the segment after setting to the segment two ends.
Second packer 11 is specifically as follows across every packer.3rd packer 15 can select mechanical packer,
Which sets mode can have various, can set mode from above putting the mode of setting of putting, also can select rotation.Typically in straight well
In the case of can with from a kind of any of the above described mode can, and high angle hole or horizontal well preferably should be set from above putting to put
Mechanical packer.3rd packer 15 continues pressurization after setting, and then causes the second packer 11 also while set, and such the
Two packers 11 and the 3rd packer 15 just can will be modified setting up and down for section, make the modification liquid being passed through from segmentation transformation tubing string
Can only enter the section.
Connecting tube 12 is arranged on the lower end of second packer 11, the upper end of the 3rd packer 15, the connecting tube 12
Side wall open up hole.It is used for during the hole in ditch siphunculus and the passage for being modified section payzone.
Ball-and-seat 14 is arranged on 12 lower end of the connecting tube, the upper end of the 3rd packer 15.The flow direction of ball-and-seat 14 is served as reasons
Under up, well section that modification liquid can be so can not enter under which, and the formation fluid of its lower well section can enter the tubing string
Realize exploitation.
Such as the process in Fig. 1 is carried out by sectional well completion tubing string to barefoot interval, when segmentation rebuilding construction is carried out, then will
Shaft bottom is arrived under above-mentioned segmentation transformation tubing string, then above carry segmentation transformation tubing string make the second packer 11 and the 3rd packer 15 across
The closer to first sliding sleeve of bushing 5 (from bottom to top) in shaft bottom, now sliding sleeve switch 9 is passed through from bottom to top and opens first set
Pipe sliding sleeve 5, then the second packer 11 and the 3rd packer 15 is set by first sliding sleeve of bushing 5 across envelope, setting pressurization makes down-hole
8 Time Delay Opening of switch valve, now only connects in the first paragraph barefoot interval and pipe in shaft bottom, then by the transformation for preparing in advance
Liquid transforms the stratum that tubing string clamp-ons first paragraph barefoot interval by segmentation, and the stratum of first paragraph barefoot interval is transformed.The
After the completion of one section of barefoot interval transformation, the second packer 11 and the 3rd packer 15 can be unsealed, above carry segmentation transformation tubing string.Beat
Open and across second sliding sleeve of bushing 5 of envelope, second segment is transformed, so tubing string is dragged, opened in sectional well completion tubing string one by one
Sliding sleeve of bushing 5 in each sectional well completion unit, transforms stratum paragraph by paragraph, and to the last one section of transformation terminates.Dragging point is proposed upper
During section transforms tubing string, underground switching valve 8 is closed in extended state, is so achieved and is managed interior blowout prevention, and outside managing then
Blowout prevention can be carried out by blowout preventer, be finally reached the purpose of well-control blowout prevention.After segmentation transformation terminates, can be divided with dragging
The direct completion production of section transformation tubing string, the formation fluid of each section of barefoot interval being disposed below can be entered by ball-and-seat 14
Enter segmentation transformation tubing string.
Later stage need to such as carry out yield allotment or control aquatic product, then carry sliding sleeve switch 9 by specified well section with oil pipe again
Sliding sleeve of bushing 5 is closed, then carries out completion production, reaches the purpose of later stage production regulation and control.The ratchet of sliding sleeve switch 9 is managed inside and outside
Pressure reduction control, when pipe internal and external pressure balance, ratchet is in contraction state, and now it does not all work to any sliding sleeve.If
Certain sliding sleeve of bushing 5 is operated, need, first by under sliding sleeve switch 9 near the sliding sleeve of bushing 5, then to build the pressure in pipe, make
Pipe is inside and outside to keep certain pressure reduction, and finally moving tubing string again makes sliding sleeve switch 9 by the sliding sleeve of bushing 5, the just meeting of sliding sleeve of bushing 5
Closed by operation.The tubing string for carrying sliding sleeve switch 9 can once arrange the on off state of multiple sliding sleeves.
In one preferred embodiment, the upper end of the underground switching valve 8 is provided with can make segmentation transformation tubing string
The circulating valve 7 that inside is communicated with the outside.After segmentation transformation terminates, when acting segmentation transformation tubing string operation, will can circulate
Valve 7 is opened to set up circulation canal.After circulating valve 7 is opened, oil pipe is connected with oil jacket annular space, it is established that by oil pipe feed liquor,
Oil pipe and oil jacket annular space go out liquid or reciprocal circulation canal, and the circulation canal can take the mechanical admixture in pit shaft out of well
Mouthful, reduce the chance card risk during segmentation transformation tubing string rises out, facilitate tubing string to rise out.
In one preferred embodiment, is provided between second packer 11 and the 3rd packer 15
One oil pipe 13.The upper end of the circulating valve 7 is provided with the second oil pipe 6.First oil pipe 13 and the second oil pipe 6 are used for adjusting adjacent portions
The distance between part so that segmentation transformation tubing string stretch into corresponding with sectional well completion tubing string during sectional well completion tubing string.
In one preferred embodiment, between the sliding sleeve switch 9 and second packer 11, waterpower is provided with
Anchor 10.During by the stratum of modification liquid press-in first paragraph barefoot interval, the effect due to pipe inside and outside differential pressure can be caused
The anchor block distending of hydraulic anchor 10, and then be firmly locked on casing wall, can so prevent from moving on segmentation transformation tubing string or under
Move and slide.
Sectional well completion tubing string in the embodiment of the present invention is connected further using 4 tubular distance piece sliding sleeve 5 of multiple open hole packers
The segmentation of any section can be carried out to relatively long open hole well section, this kind of segmented mode is not limited by quantity.Between multiple open hole packers 4
It is sequentially connected every sliding sleeve of bushing 5, after sectional well completion tubing string enters barefoot interval in well, open hole packer 4 sets, so adjacent
Sliding sleeve of bushing 5 between open hole packer 4 is corresponding with the barefoot interval that each section is set, and then can pass through sliding sleeve of bushing
5 transformations for only carrying out respective degrees to this section of barefoot interval.The number of fragments of sectional well completion tubing string is unrestricted, is more beneficial for length
Barefoot interval segments balanced fractured, improves correctional effect.Segmentation transformation tubing string and above-mentioned sectional well completion in the embodiment of the present invention
Tubing string is used cooperatively, and can open the sliding sleeve of bushing 5 in sectional well completion tubing string successively by this segmentation transformation tubing string, then by this
Segmentation transformation tubing string injects modification liquid to the corresponding barefoot interval of sliding sleeve of bushing 5.When modification liquid has been injected, deblocking is completed
Afterwards, when will drag this segmentation transformation tubing string, this segmentation transformation tubing string closing can so can be prevented effectively from by underground switching valve 8
Dragging blowout in pipe when tubing string is transformed in this segmentation.The latus rectum of sectional well completion tubing string can be matched with the sleeve pipe in original well,
And then ensure the integrity of whole well.Meanwhile, the repeatable switch of sliding sleeve of bushing 5, harness the river to later stage control production, control water, again
Technology window has been reserved in secondary segmentation transformation and other operations.
Applicant also proposed a kind of oil well transformation device, and which includes any of the above-described described sectional well completion tubing string and as above
State arbitrary described segmentation transformation tubing string.In the application oil well transformation apparatus function realization be need sectional well completion tubing string and
The segmentation for entering well transforms what the common cooperation of tubing string was completed, and corresponding to one instrument of any of which, the disappearance of function can all cause operation
The big heavy discount of effect.
Each embodiment in this specification is all described by the way of going forward one by one, what each embodiment was stressed be with
The difference of other embodiment, between each embodiment identical similar part mutually referring to.
Above-described embodiment technology design only to illustrate the invention and feature, its object is to allow person skilled in the art
Scholar will appreciate that present disclosure and implement according to this, can not be limited the scope of the invention with this.All according to the present invention
Equivalence changes or modification that spirit is made, should all be included within the scope of the present invention.
Claims (15)
1. tubing string is transformed in a kind of segmentation, it is characterised in that included：
Underground switching valve；It is arranged on the sliding sleeve switch of the underground switching valve lower end；It is arranged on the of the sliding sleeve switch lower end
Two packers；The connecting tube of the second packer lower end is arranged on, the side wall of the connecting tube opens up hole；It is arranged on institute
The ball-and-seat of connecting tube lower end is stated, the flow direction of the ball-and-seat is for from lower to upper；It is arranged on the 3rd envelope of the ball-and-seat lower end
Every device.
2. tubing string is transformed in segmentation according to claim 1, it is characterised in that the upper end of the underground switching valve is provided with energy
The circulating valve for making the inside of segmentation transformation tubing string be communicated with the outside.
3. tubing string is transformed in segmentation according to claim 1, it is characterised in that second packer and the described 3rd packing
The first oil pipe is provided between device.
4. tubing string is transformed in segmentation according to claim 2, it is characterised in that the upper end of the circulating valve is provided with the second oil
Pipe.
5. tubing string is transformed in segmentation according to claim 1, it is characterised in that second packer be across every packer.
6. tubing string is transformed in segmentation according to claim 1, it is characterised in that the 3rd packer is mechanical packer.
7. tubing string is transformed in segmentation according to claim 1, it is characterised in that the sliding sleeve switch and second packer
Between be provided with hydraulic anchor.
8. device transformed by a kind of oil well, it is characterised in that include：Segmentation transformation tubing string as described in arbitrary in claim 1 to 7
With a kind of sectional well completion tubing string, the sectional well completion tubing string includes：Multiple sectional well completion units being connected, each sectional well completion list
Unit includes open hole packer and the sliding sleeve of bushing being connected with the open hole packer；One end and multiple sectional well completion units
The first packer for being connected of one end or extension hanger.
9. device transformed by oil well according to claim 8, it is characterised in that when one end and multiple sectional well completion units
One end be connected be the first packer when, first packer be hanging packer.
10. device transformed by oil well according to claim 8, it is characterised in that first packer or the tail pipe are outstanding
The sleeve pipe being provided between hanging device and the sectional well completion unit for allocating distance.
Devices transformed by 11. oil wells according to claim 8, it is characterised in that multiple sectional well completion units another
End is connected with guide shoe.
12. a kind of sectional well completion tubing strings, it is characterised in that include：Multiple sectional well completion units being connected, each sectional well completion
Unit includes open hole packer and the sliding sleeve of bushing being connected with the open hole packer, and the sectional well completion unit is used for and divides
Section transformation tubing string is adapted；The first packer or tail tube hanging that one end is connected with one end of multiple sectional well completion units
Device.
13. sectional well completion tubing strings according to claim 12, it is characterised in that when one end and multiple sectional well completion lists
When what one end of unit was connected is the first packer, first packer is hanging packer.
14. sectional well completion tubing strings according to claim 12, it is characterised in that first packer or the tail pipe are outstanding
The sleeve pipe being provided between hanging device and the sectional well completion unit for allocating distance.
15. sectional well completion tubing strings according to claim 12, it is characterised in that multiple sectional well completion units another
End is connected with guide shoe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610806233.XA CN106437618B (en) | 2016-09-06 | 2016-09-06 | Device is transformed in sectional well completion tubing string, segmentation transformation tubing string and oil well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610806233.XA CN106437618B (en) | 2016-09-06 | 2016-09-06 | Device is transformed in sectional well completion tubing string, segmentation transformation tubing string and oil well |
Publications (2)
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110206531A (en) * | 2019-05-23 | 2019-09-06 | 广州海洋地质调查局 | A kind of oil pipe of horizontal well production profile test method and device |
| CN111886397A (en) * | 2018-03-19 | 2020-11-03 | 沙特阿拉伯石油公司 | Multi-layer section well testing |
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| Publication number | Publication date |
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| CN106437618B (en) | 2019-01-18 |
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