CN108590574A - A kind of stage cementing device with packing function - Google Patents
A kind of stage cementing device with packing function Download PDFInfo
- Publication number
- CN108590574A CN108590574A CN201810695815.4A CN201810695815A CN108590574A CN 108590574 A CN108590574 A CN 108590574A CN 201810695815 A CN201810695815 A CN 201810695815A CN 108590574 A CN108590574 A CN 108590574A
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- Prior art keywords
- cementing device
- packing
- cementing
- closed
- ontology
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- 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
Links
- 238000012856 packing Methods 0.000 title claims abstract description 35
- 239000007788 liquid Substances 0.000 claims abstract description 17
- 238000011144 upstream manufacturing Methods 0.000 claims description 2
- 238000005192 partition Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 239000002002 slurry Substances 0.000 description 5
- 239000004568 cement Substances 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 206010016173 Fall Diseases 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 238000009955 starching 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
- 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
- E21B33/14—Methods or devices for cementing, for plugging holes, crevices or the like for cementing casings into boreholes
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (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)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The invention discloses a kind of stage cementing devices with packing function, including：Cementing device is arranged between casing, including top connection connected in sequence (1), ontology (6) and base tube (10)；Packer, it is set in outside cementing device, including packing element (11), packing element (11) is set in the outside of base tube (10), and between the outside wall surface of base tube (10) formed can filling liquid expansion seal cavity (26), the top of seal cavity (26) by being connected in the reservoir channel (23) and cementing device in base tube (10), by suppressed into cementing device open reservoir channel into seal cavity liquid filling body to realize packing annular space.A kind of stage cementing device with packing function of the invention, is suitable for fraclional well cementing, by Hydraulic Expansion sealed packer after level-one is cemented the well, realizes the partition packing of stage cementing device or more annular space.
Description
Technical field
The present invention relates to a kind of underground well cementation hook-up for cementing more particularly to a kind of packing formula stage cementing devices.
Background technology
After oil/gas well finishing drilling, tripping in casing is needed, well cementing operation is carried out, depth can be solved using two-stage cementing technology
Some technical barriers in well, ultradeep well cementing operation, a such as cementing amount is big, and the construction time is long, and formation fracture pressure is low,
Cement returns the problems such as less than design well depth, and the classification injector with annular space packing function can be realized and cemented the well in level-one
Bi Hou, annular space bore hole, blocking head of liquid transmit packing stage cementing device up and down, can directly reduce pressure of the shaft bottom to stratum
Power protects stratum and wellbore, and can carry out two level cementing operation without waiting for level-one cement slurry sets, shortens operation
Time reduces well cementation cost.
The existing method that can realize that fraclional well cementing insulates annular space in the process is broadly divided into two kinds of forms：The first, uses
Conventional hierarchical cementing device is used in series with packer, and packer is placed in below stage cementing device on pipe string structure,
Its disadvantage needs respectively operate two tools, complicated for operation, and structure is not compact and service condition is limited；Second,
Stage cementing device is designed as integral type with packer, by using ancillary attachment triggering packer effect, certain structures packing
Device has that swollen envelope, security reliability are poor in advance.
Invention content
The purpose of the present invention is to provide one kind capable of being suitable for fraclional well cementing, and annular space can be realized in well cementing operation
The stage cementing device of wellbore packing.
To achieve the above object, a kind of specific technical solution with the stage cementing device for insulating function of the invention
For：
A kind of stage cementing device with packing function, including：Cementing device is arranged between casing, including sequentially
Top connection, ontology and the base tube of connection；Packer is set in outside cementing device, including packing element, and packing element is set in the outer of base tube
Portion, and between the outside wall surface of base tube formed can filling liquid expansion seal cavity, the top of seal cavity passes through the note in base tube
It is connected in liquid channel and cementing device, reservoir channel liquid filling body into seal cavity is opened by being suppressed into cementing device
Annular space is insulated to realize.
The a kind of of the present invention has the advantages that the stage cementing device of packing function is：
1) simple and reasonable, easily operated, reliability is high；
2) it is suitable for fraclional well cementing, by Hydraulic Expansion sealed packer after level-one is cemented the well, realizes stage cementing device
The partition packing of upper and lower annular space；
3) annular space head of liquid of being honored as a queen since packer is swollen is separated by packer, reduces shadow of the fluid column to strata pressure
It rings, formation leakage influences cementing quality when effective protection stratum and wellbore or avoidable level-one are cemented the well, and without waiting for level-one
Cement slurry sets can carry out two level cementing operation, effectively shorten the activity duration；
4) attachment and attachment needed for are subsequently bored except operation is consistent with conventional hierarchical cementing device, improve tool adaptability,
Additional particular/special requirement is not generated.
Description of the drawings
Fig. 1 is the structure chart in original state of the stage cementing device of the present invention；
Fig. 2 is that the stage cementing device of the present invention is opening the structural schematic diagram filled in and reached when opening obturating plug position；
Fig. 3 is reservoir channel structural representation in the open state of the stage cementing device in packer of the present invention
Figure；
Fig. 4 is structural schematic diagram of the stage cementing device of the present invention in circulation port in the open state；
Fig. 5 is structural schematic diagram of the stage cementing device of the present invention when circulation port is closed；
Fig. 6 is the structural schematic diagram of the opening plug in the present invention；
Fig. 7 is the structural schematic diagram of the shut-off plug in the present invention.
In figure：1. top connection；2. closing obturating plug；3. the first shear pin；4. block；5. closing set；6. ontology；7. opening plug
Seat；8. the second shear pin；9. baffle ring；10. base tube；11. packing element；12. opening plug；13. shut-off plug；21. closing set circulation port；22.
Bulk circulation hole；23. reservoir channel；24. check valve；25. closing valve；26. cavity.
Specific implementation mode
In order to be better understood by the purpose of the present invention, structure and function, below in conjunction with the accompanying drawings, have to one kind of the present invention
The stage cementing device of packing function does further detailed description.
As shown in Figures 1 to 7, a kind of stage cementing device with packing function of the present invention, including water filling are shown as
Mud device and the packer being set in outside cementing device, cementing device are arranged between casing, including top connection connected in sequence 1,
Ontology 6 and base tube 10, packer are set in the outside of base tube 10, and for insulating annular space, packer includes packing element 11, packing element 11 with
Formed between the outside wall surface of base tube 10 can filling liquid expansion seal cavity 26, the fluid injection that the top of seal cavity 26 passes through base tube 10
It is connected in channel 23 and cementing device.Wherein, the both ends of top connection 1 are threadedly coupled with casing and ontology 6 respectively, ontology 6
Both ends are internal thread, are threadedly coupled respectively with the base tube 10 of the top connection on top 1 and lower part by internal thread, the bottom of base tube 10
Portion is connected by external screw thread with casing.
Further, it is provided with check valve 24 on reservoir channel 23 and pressure activated closes valve 25, the setting of check valve 24 is being pressed
The upstream of valve 25 is closed in power triggering.That is, pressure activated closes valve 25 than check valve 24 closer to seal cavity 26.When close
Envelope cavity 26, which has filled and reached, closes the triggering pressure of valve 25, and pressure activated closes valve 25 and closes reservoir channel 23, to cut
Liquid flowing in disconnected cementing device.
Further, the internal sleeve of ontology 6, which is equipped with, closes set 5, closes on the side wall of set 5 and is provided with closing set circulation port 21,
It is provided with bulk circulation hole 22 on the side wall of ontology 6, bulk circulation hole 22 is driven with the relative movement for closing set 5 by ontology 6
21 relative motion of circulation port is covered to realize trepanning and closed pore with closing.When the phase parallel with set circulation port 21 is closed of bulk circulation hole 22
When logical, the cavity realization inside and outside cementing device is connected, inner-outer circulation then can be carried out.When bulk circulation hole 22 and closing
When set circulation port 21 is staggered and is not communicated with, the bulk circulation hole 22 on ontology 6 is closed, completes well cementing operation.
Further, the bottom for closing set 5 is provided with opening obturating plug 7, opens obturating plug 7 and is consolidated with set 5 is closed by the first shear pin 8
Fixed connection, closes the mounting hole being provided on the side wall of set 5 for install the first shear pin 8, reservoir channel 23 by mounting hole and
Cementing device inner chamber body is connected.Therefore when opening 12 free-fallings of plug put into cementing device to the opening plug for closing set 5
After at seat 7, to being suppressed in casing, then the first shear pin 8 closed on set 5 can be cut by opening the effect of being under pressure of obturating plug 7, be beaten
It opens to fill in 12 and open obturating plug 7 and continues to move down the first shear pin 8 of drive and leave to close to cover 5, then leak out closing set upper first and cut
8 mounting hole is followed closely, the liquid in cementing device enters close between the base tube 10 and packing element 11 of packer by reservoir channel 23
It seals in cavity 26, the seal cavity 26 by injecting liquid gradually expands, and packing element 11 starts swollen envelope, is expanded by packing element and realizes envelope
The purpose of spacer ring sky.
Further, the top for closing set 5 is provided with closing obturating plug 2, closes obturating plug 2 and is consolidated with set 5 is closed by the second shear pin 3
Fixed connection, closes the mounting hole being provided on the side wall of obturating plug 2 for installing the second shear pin 3.
Further, it closes on set 5, closing obturating plug 2, opening obturating plug 7 and base tube 10 and is both provided with sealing ring, to realize water filling
Various seal requests in mud device under different working condition.
Further, the groove for accommodating block 4 is provided on the inner wall of ontology 6.It closes in the bottom of set 5 and is provided with gear
Ring 9, baffle ring 9 are connected by the external screw thread of outer wall with the internal thread for closing 5 inner walls of set.
A kind of course of work with the stage cementing device of packing function of the present invention is retouched below in conjunction with the accompanying drawings
It states：
First, the stage cementing device of the present invention is lowered into well, level-one cementing is completed to fill in capable replace using flexibility
Slurry, after starching in place, the input opening plug into cementing device is filled in when opening at 12 free-fallings to the opening obturating plug 7 of closing set 5
Afterwards, it to continuing to suppress in cementing device, until opening 7 compression force effect of obturating plug cuts the first shear pin 8 closed on set 5, opens
Plug and opening obturating plug 7 move down, and leak out the mounting hole for closing the first shear pin 8 on set 5, therefore the liquid in cementing device passes through note
Liquid channel 23 enters in the seal cavity 26 in packer, is gradually expanded by seal cavity 26 after the injection of liquid, packing element 11
Start swollen envelope.
Then, to persistently being suppressed in cementing device, when the pressure of the seal cavity 26 in packer reaches certain
After setting value, triggering pressure activated closes valve 25 and closes reservoir channel 23, blocks the liquid flowing in cementing device, packer is swollen
Envelope finishes, and completes the packing operation of annular space up and down of stage cementing device.
Then, to continuing to suppress in cementing device, when pressure reaches trepanning setting value, control stage cementing device is cut
Circulation port open and close the second shear pin 3, at this time the second shear pin 3 partly cut, close obturating plug 2 remain secured on ontology 6, close
5 disengaging ontology 6 of set simultaneously starts to move, and when closing, the closing set circulation port 21 on set 5 is concordant with the bulk circulation hole 22 on ontology 6
When communicating, the cavity inside and outside cementing device is connected, and is recycled by trepanning；When after circulation terminates, carried out by cementing requirements
Two level cementing job.
It is carried out for slurry using shut-off plug 13, until after shut-off plug 13 is fallen at the closing obturating plug 2 of cementing device, shut-off plug
13 push the closing movement of obturating plug 2 to cut the second shear pin 3 again so that close obturating plug 2 and be detached from ontology 6, block 4 falls into shut-off plug
In 2 respective slots of seat, set 5 is closed at this time and is able to move relative to ontology 6, closes set circulation port 21 and bulk circulation hole 22
It no longer communicates, closes the bulk circulation hole 22 on ontology 6, complete whole well cementing operations.
A kind of stage cementing device with packing function of the present invention, simple and reasonable, easily operated, reliability
It is high；It is applicable to fraclional well cementing, annular space wellbore packing can be achieved in well cementing operation；And it is insulated after can realizing level-one well cementation
Annular space above and below stage cementing device；Influence of the fluid column to strata pressure, effective protection stratum and wellbore are reduced, or can avoid one
Formation leakage influences cementing quality when grade well cementation, and can carry out two level cementing operation without waiting for level-one cement slurry sets,
Effectively shorten the activity duration；Required attachment and attachment are subsequently bored except operation is consistent with conventional hierarchical cementing device, improve tool
Adaptability does not generate additional particular/special requirement.
The present invention is further described by specific embodiment above, it should be understood that, here specifically
Description, should not be construed as the restriction to the spirit and scope of the invention, and one of ordinary skilled in the art is reading this explanation
The various modifications made to above-described embodiment after book belong to the range that the present invention is protected.
Claims (6)
1. a kind of stage cementing device with packing function, which is characterized in that including：
Cementing device is arranged between casing, including top connection connected in sequence (1), ontology (6) and base tube (10)；
Packer is set in outside cementing device, including packing element (11), and packing element (11) is set in the outside of base tube (10), and and base
Manage (10) outside wall surface between formed can filling liquid expansion seal cavity (26), the top of seal cavity (26) passes through base tube (10)
It is connected in interior reservoir channel (23) and cementing device, reservoir channel is opened to seal cavity by being suppressed into cementing device
Interior liquid filling body is to realize packing annular space.
2. stage cementing device according to claim 1, which is characterized in that be provided with check valve in reservoir channel (23)
(24) and pressure activated closes valve (25), and the upstream of valve (25) is closed in check valve (24) setting in pressure activated.
3. stage cementing device according to claim 1, which is characterized in that the internal sleeve of ontology (6), which is equipped with to close, to be covered
(5), it closes on the side wall of set (5) and is provided with closing set circulation port (21)；It is provided with bulk circulation hole on the side wall of ontology (6)
(22), bulk circulation hole (22) are driven to be communicated with set circulation port (21) is closed with the relative movement for closing set (5) by ontology (6)
Or staggeredly.
4. stage cementing device according to claim 1, which is characterized in that the bottom for closing set (5) is provided with opening plug
Seat (7) is opened obturating plug (7) and is fixedly connected by the first shear pin (8) with set (5) is closed, is arranged on the side wall of closing set (5) useful
In the mounting hole for installing the first shear pin (8), reservoir channel (23) is connected by mounting hole with cementing device inner chamber body.
5. stage cementing device according to claim 4, which is characterized in that close at the top of set (5) and be provided with shut-off plug
Seat (2) closes obturating plug (2) and is set to the inside closed and cover (5), and the closings obturating plug (2), closes and cover (5) and described
Body (6) three is fixed together by the second shear pin (3), is closed on the side wall of obturating plug (2) and is provided with for installing the second shear pin
(3) mounting hole.
6. stage cementing device according to claim 1, which is characterized in that close in the bottom of set (5) and be provided with baffle ring
(9), baffle ring (9) is connected with set (5) screw thread is closed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810695815.4A CN108590574A (en) | 2018-06-29 | 2018-06-29 | A kind of stage cementing device with packing function |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810695815.4A CN108590574A (en) | 2018-06-29 | 2018-06-29 | A kind of stage cementing device with packing function |
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| Publication Number | Publication Date |
|---|---|
| CN108590574A true CN108590574A (en) | 2018-09-28 |
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| CN201810695815.4A Pending CN108590574A (en) | 2018-06-29 | 2018-06-29 | A kind of stage cementing device with packing function |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112443289A (en) * | 2019-08-27 | 2021-03-05 | 中国石油化工股份有限公司 | Packing type stage cementing device |
| CN112443290A (en) * | 2019-08-28 | 2021-03-05 | 中国石油化工股份有限公司 | Anchoring packing cement surface control device and well cementation tubular column comprising same |
| CN112855069A (en) * | 2021-01-22 | 2021-05-28 | 德州众凯石油科技有限公司 | Graded cementing device |
| CN113338846A (en) * | 2020-02-18 | 2021-09-03 | 中国石油化工股份有限公司 | Packing type stage cementing device |
| CN113846990A (en) * | 2020-06-28 | 2021-12-28 | 中国石油化工股份有限公司 | Stage cementing device |
| CN114109299A (en) * | 2020-08-27 | 2022-03-01 | 中国石油化工股份有限公司 | Stage cementing device and method for top cementing |
| CN114109297A (en) * | 2020-08-25 | 2022-03-01 | 中国石油化工股份有限公司 | Stage cementing method |
| CN114427373A (en) * | 2020-09-16 | 2022-05-03 | 中国石油化工股份有限公司 | Opening plug for stage cementing device and stage cementing device |
| CN114658387A (en) * | 2020-12-23 | 2022-06-24 | 中国石油化工股份有限公司 | Stage cementing device for preventing secondary grouting from being closed in advance |
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112443289A (en) * | 2019-08-27 | 2021-03-05 | 中国石油化工股份有限公司 | Packing type stage cementing device |
| CN112443290A (en) * | 2019-08-28 | 2021-03-05 | 中国石油化工股份有限公司 | Anchoring packing cement surface control device and well cementation tubular column comprising same |
| CN113338846B (en) * | 2020-02-18 | 2022-09-23 | 中国石油化工股份有限公司 | Packing type stage cementing device |
| CN113338846A (en) * | 2020-02-18 | 2021-09-03 | 中国石油化工股份有限公司 | Packing type stage cementing device |
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| CN114109297B (en) * | 2020-08-25 | 2024-05-14 | 中国石油化工股份有限公司 | Stage cementing method |
| CN114109297A (en) * | 2020-08-25 | 2022-03-01 | 中国石油化工股份有限公司 | Stage cementing method |
| CN114109299A (en) * | 2020-08-27 | 2022-03-01 | 中国石油化工股份有限公司 | Stage cementing device and method for top cementing |
| CN114109299B (en) * | 2020-08-27 | 2024-04-19 | 中国石油化工股份有限公司 | Stage cementing device for top cementing and method thereof |
| CN114427373A (en) * | 2020-09-16 | 2022-05-03 | 中国石油化工股份有限公司 | Opening plug for stage cementing device and stage cementing device |
| CN114427373B (en) * | 2020-09-16 | 2024-02-09 | 中国石油化工股份有限公司 | Open plug for stage cementing device and stage cementing device |
| CN114658387A (en) * | 2020-12-23 | 2022-06-24 | 中国石油化工股份有限公司 | Stage cementing device for preventing secondary grouting from being closed in advance |
| CN112855069B (en) * | 2021-01-22 | 2022-06-03 | 德州众凯石油科技有限公司 | Graded cementing device |
| CN112855069A (en) * | 2021-01-22 | 2021-05-28 | 德州众凯石油科技有限公司 | Graded cementing device |
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