CN108729873B - Tandem compression packer - Google Patents
Tandem compression packer Download PDFInfo
- Publication number
- CN108729873B CN108729873B CN201810775707.8A CN201810775707A CN108729873B CN 108729873 B CN108729873 B CN 108729873B CN 201810775707 A CN201810775707 A CN 201810775707A CN 108729873 B CN108729873 B CN 108729873B
- Authority
- CN
- China
- Prior art keywords
- annular
- guide cylinder
- plate
- sealing
- bag body
- 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.)
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Links
- 230000006835 compression Effects 0.000 title claims abstract description 19
- 238000007906 compression Methods 0.000 title claims abstract description 19
- 238000007789 sealing Methods 0.000 claims abstract description 43
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 13
- 239000010959 steel Substances 0.000 claims abstract description 13
- 239000007788 liquid Substances 0.000 claims description 14
- 239000004677 Nylon Substances 0.000 claims description 3
- 229920001778 nylon Polymers 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 239000004568 cement Substances 0.000 abstract description 12
- 230000000694 effects Effects 0.000 abstract description 7
- 239000002002 slurry Substances 0.000 abstract description 6
- 230000005484 gravity Effects 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000002775 capsule Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000033001 locomotion Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
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
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
- E21B33/122—Multiple string packers
Abstract
The invention relates to a serial compression packer which is arranged in an annular space between a guide cylinder and a steel pile, wherein the steel pile penetrates through the guide cylinder and comprises a plurality of layers of annular bag bodies which are overlapped up and down and are connected together, the top of the uppermost layer of annular bag body is connected with an annular upper pressing plate, the upper pressing plate is connected with an annular sealing flat plate, the outer circumference of the sealing flat plate integrally extends upwards along the inner wall of the guide cylinder and is provided with a sealing vertical plate capable of sliding up and down, a sealing ring is arranged between the sealing vertical plate and the guide cylinder, the bottom of the lowermost layer of annular bag body is connected with a lower supporting plate, and the lower supporting plate is fixed on the inner wall of the guide cylinder. The beneficial effects of the invention are as follows: the annular air bags of each layer can compress the annular air bag body by gravity through the weight difference of the upper ballast cement slurry, and the annular air bag body compresses and then extrudes the steel piles, so that a plurality of seals are realized, the sealing effect on the upper cement slurry is formed, and the annular air bag has the advantages of simple structure, good sealing effect and low cost.
Description
Technical Field
The invention relates to a series compression packer, and belongs to the technical field of packers for offshore regulation type drilling platforms.
Background
Currently, subsea packers for offshore use are classified into active packers and passive packers according to the type of operation. The active packer mainly comprises a product, namely an inflatable packer, and the inflatable packer has the advantages that: the inner surface of the inflatable packer is not contacted with the outer surface of the column in the column-making process; is not limited by the weight (grouting height) and the water depth of cement paste; can allow for reverse motion of the pile and moderate eccentricity of the pile; can withstand vibrations during pile driving and impact loads of the pile due to vertical movements of the offshore crane during pile driving. The disadvantage is the complex system, which requires the provision of power stations, hydraulic lines, ROV (underwater robot) emergency interfaces. ROV subsea connection hoses are required once the pipeline is damaged; the land installation and debugging workload is large, the cost is high, and the offshore operation is complex; the residual hardware consumes the anode, and the existence of the pipeline endangers the underwater operation of the diver; the cost is high, often several times higher than passive packers.
Passive packers are mainly mechanical packers and Crux packers. The passive packer has the advantages that: pipeline and power system are not needed, and valve installation and an underwater ROV standby system are not needed; land debugging and offshore operation are not needed, and meanwhile, the function of blocking mud from entering the annular space is achieved; the anode is consumed by the residual hardware, and various pipelines and valves which harm the underwater operation of a diver are avoided; the price is low. The defects are mainly that: the application water depth is limited; the pile falls down quickly, possibly causing the packer to be damaged and fail.
The underwater packer has the advantages of both an active packer and a passive packer, and achieves the purposes of simple structure, good sealing effect and low cost.
Disclosure of Invention
In order to solve the technical defects, the invention provides the series compression packer which is simple in structure, good in sealing effect and low in cost.
The invention is realized by the following measures:
The invention relates to a serial compression packer which is arranged in an annular space between a guide cylinder and a steel pile, wherein the steel pile penetrates through the guide cylinder and comprises a plurality of layers of annular bag bodies which are overlapped up and down and are connected together, the top of the uppermost layer of annular bag body is connected with an annular upper pressing plate, the upper pressing plate is connected with an annular sealing flat plate, the outer circumference of the sealing flat plate extends upwards and downwards along the inner wall of the guide cylinder integrally, a sealing ring is arranged between the sealing vertical plate and the guide cylinder, the bottom of the lowermost layer of annular bag body is connected with a lower supporting plate, and the lower supporting plate is fixed on the inner wall of the guide cylinder.
An intermediate baffle is arranged between the two layers of annular capsules, which are adjacent up and down, a spring seat is arranged on the intermediate baffle, and a compression spring penetrating through the annular capsules is connected between the spring seats on the two layers of intermediate baffle.
The spring seat is provided with a through hole, and the through hole is communicated with two layers of annular capsules which are adjacent up and down.
The lower supporting plate is provided with a gas-liquid inlet and a gas-liquid outlet, the upper end of the gas-liquid inlet and the gas-liquid outlet are communicated with the annular air bag, and the lower end of the gas-liquid inlet and the gas-liquid outlet is connected with a joint with a valve.
The annular bag body is made of rubber, the side wall of the annular bag body is formed by bonding a plurality of rubber layers, and nylon skeleton lines are embedded in each rubber layer.
The sealing vertical plate and the inner wall of the guide cylinder above the sealing flat plate are provided with a plurality of guide plates extending along the radial direction, and the top of the guide plates is provided with oblique edges with high outside and low inside.
Above-mentioned bottom plate is the ring, the bottom plate below is connected with the annular dull and stereotyped that supports, the outer circumference of dull and stereotyped along the inner wall of guide cylinder downwards an organic whole extension has the fixed plate, the fixed plate is connected through the bolt with the inner wall of guide cylinder, be connected with the bracing support between fixed plate and the dull and stereotyped bottom of support.
The beneficial effects of the invention are as follows: the annular air bags of each layer can compress the annular air bag body by gravity through the weight difference of the upper ballast cement slurry, and the annular air bag body compresses and then extrudes the steel piles, so that a plurality of seals are realized, the sealing effect on the upper cement slurry is formed, and the annular air bag has the advantages of simple structure, good sealing effect and low cost.
Drawings
Fig. 1 is a schematic diagram of the overall structure of the present invention.
Fig. 2 is a schematic view of a part of the structure of the present invention.
Fig. 3 is a partially enlarged schematic structural view of the present invention.
Fig. 4 is a schematic view of the structure of the present invention after cement slurry is injected.
Wherein: the device comprises a guide cylinder 1, a steel pile 2, a guide plate 3, an annular bag body 4, an upper pressing plate 5, a sealing flat plate 6, a sealing vertical plate 7, a sealing ring 8, a compression spring 9, a lower supporting plate 10, an air inlet and air outlet 11, a supporting flat plate 12, a fixing plate 13, an inclined support 14, an intermediate partition plate 15, a spring seat 16 and a through hole 17.
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings:
As shown in fig. 1,2 and 3, the tandem compression packer is arranged in an annular space between a guide cylinder 1 and a steel pile 2, the steel pile 2 penetrates through the guide cylinder 1 and comprises a plurality of layers of annular bag bodies 4 which are overlapped up and down and are connected together, the top of the uppermost layer of annular bag bodies 4 is connected with an annular upper pressing plate 5, the upper pressing plate 5 is connected with an annular sealing flat plate 6, the outer circumference of the sealing flat plate 6 integrally extends upwards along the inner wall of the guide cylinder 1 to form a sealing vertical plate 7 capable of sliding up and down, a sealing ring 8 is arranged between the sealing vertical plate 7 and the guide cylinder 1, the bottom of the lowermost layer of annular bag bodies 4 is connected with a lower supporting plate 10, and the lower supporting plate 10 is fixed on the inner wall of the guide cylinder 1. The lower support plate 10 is circular, a circular support flat plate 12 is connected below the lower support plate 10, a fixing plate 13 is integrally extended downwards along the inner wall of the guide cylinder 1 on the outer circumference of the support flat plate 12, the fixing plate 13 is connected with the inner wall of the guide cylinder 1 through bolts, and a diagonal bracing bracket 14 is connected between the fixing plate 13 and the bottom of the support flat plate 12. The upper part of the annular air bag is used as a movable compression end, and the bottom of the annular air bag is fixed, so that downward compression can be realized.
An intermediate baffle 15 is arranged between the two layers of annular capsules 4 which are adjacent up and down, a spring seat 16 is arranged on the intermediate baffle 15, a compression spring 9 penetrating through the annular capsules 4 is connected between the spring seats 16 on the two layers of intermediate baffles 15 which are adjacent up and down, and the compression spring 9 is used as a force transmission contact part of internal compression force. The spring seat 16 is provided with a through hole 17, and the through hole 17 is communicated with the upper layer and the lower layer of the annular bag body 4. The annular air bags are connected in series, the consistency of the internal pressure is ensured, the compression springs 9 are additionally arranged in the annular air bags, the annular air bag supporting state in the initial state is realized, and the integral annular air bags can compress the bag body by gravity through the weight difference of the upper ballast cement slurry, as shown in fig. 4.
The lower support plate 10 is provided with an air inlet and an air outlet 11, the upper end of the air inlet and the air outlet 11 is communicated with the annular air bag, the lower end of the air inlet and the air outlet 11 is connected with a joint with a valve, and air or liquid can be accessed through an external pipeline joint and the like, so that the internal pressure of the annular bag body 4 is increased, and the contact pressure between the annular bag body 4 and the outer wall of the steel pile 2 can be improved, and the sealing performance is improved. The annular bag body 4 is made of rubber, the side wall of the annular bag body 4 is formed by bonding a plurality of rubber layers, nylon skeleton wires are embedded in each rubber layer, and compressive strength is enhanced. A plurality of guide plates 3 extending along the radial direction are arranged on the inner wall of the guide cylinder 1 above the sealing vertical plate 7 and the sealing flat plate 6, and the top of the guide plates 3 is provided with sloping sides with high outside and low inside.
The working process comprises the following steps:
In the first mode, when cement paste is injected into the upper part of the sealing plate 6, the upper part of the sealing plate 6 can accumulate more and more cement paste due to the weight difference between the cement paste and the seawater, and the sealing vertical plate 7 and the sealing plate 6 slide downwards along the inner wall of the guide cylinder 1, so that the annular capsule body 4 is gradually compressed, the annular capsule body 4 is compressed and deformed, the contact sealing between the capsule body and the steel pile 2 is realized, and the more the cement paste injection amount is, the more obvious the sealing effect is;
In the second mode, when a larger sealing pressure is needed, air or liquid in the annular bag body 4 can be pumped out through the air inlet and air outlet 11 at the lower part of the annular bag body 4 in the pouring process, the annular bag body 4 deforms greatly, the formed contact surface is larger, and the sealing with larger pressure is realized along with the increase of the weight of cement paste at the upper part.
The foregoing is merely a preferred embodiment of the present patent, and it should be noted that modifications and substitutions will now occur to those skilled in the art without departing from the technical principles of the present patent, and such modifications and substitutions should also be considered to be within the scope of the present patent.
Claims (3)
1. The utility model provides a tandem compression packer sets up in the annular space between guide cylinder and steel pile, the steel pile wears in the guide cylinder, its characterized in that: the device comprises a plurality of layers of annular bag bodies which are overlapped up and down and are connected together, wherein the top of the annular bag body at the uppermost layer is connected with an annular upper pressing plate, the upper pressing plate is connected with an annular sealing flat plate, the outer circumference of the sealing flat plate integrally extends upwards along the inner wall of a guide cylinder to form a sealing vertical plate capable of sliding up and down, a sealing ring is arranged between the sealing vertical plate and the guide cylinder, the bottom of the annular bag body at the lowermost layer is connected with a lower supporting plate, and the lower supporting plate is fixed on the inner wall of the guide cylinder; an intermediate baffle is arranged between two layers of annular bag bodies which are adjacent up and down, a spring seat is arranged on the intermediate baffle, and a compression spring penetrating through the annular bag bodies is connected between the spring seats on the two layers of intermediate baffle which are adjacent up and down; the spring seat is provided with a through hole which is communicated with two layers of annular bag bodies which are adjacent up and down; the lower support plate is provided with a gas-liquid inlet and a gas-liquid outlet, the upper end of the gas-liquid inlet and the gas-liquid outlet is communicated with the annular air bag, and the lower end of the gas-liquid inlet and the gas-liquid outlet is connected with a joint with a valve; the lower support plate is annular, an annular supporting plate is connected below the lower support plate, a fixing plate integrally extends downwards along the inner wall of the guide cylinder on the outer circumference of the supporting plate, the fixing plate is connected with the inner wall of the guide cylinder through bolts, and a diagonal bracing bracket is connected between the fixing plate and the bottom of the supporting plate.
2. The tandem compression packer of claim 1, wherein: the annular bag body is made of rubber, the side wall of the annular bag body is formed by bonding a plurality of rubber layers, and nylon skeleton wires are embedded in each rubber layer.
3. The tandem compression packer of claim 1, wherein: the sealing vertical plate and the inner wall of the guide cylinder above the sealing flat plate are provided with a plurality of guide plates extending along the radial direction, and the top of the guide plates is provided with oblique edges with high outside and low inside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810775707.8A CN108729873B (en) | 2018-07-16 | 2018-07-16 | Tandem compression packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810775707.8A CN108729873B (en) | 2018-07-16 | 2018-07-16 | Tandem compression packer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108729873A CN108729873A (en) | 2018-11-02 |
| CN108729873B true CN108729873B (en) | 2024-04-30 |
Family
ID=63926885
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810775707.8A Active CN108729873B (en) | 2018-07-16 | 2018-07-16 | Tandem compression packer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108729873B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109973043B (en) * | 2019-05-14 | 2021-02-23 | 淮安市井神钻采机具有限公司 | Multilayer continuous injection step-by-step deblocking water injection packer |
| CN113502797B (en) * | 2021-05-14 | 2023-02-24 | 海洋石油工程股份有限公司 | Active packer |
| CN113897967B (en) * | 2021-11-19 | 2022-07-19 | 江苏科技大学 | Packer device for grouting of jacket pile leg and installation method thereof |
| CN114508105A (en) * | 2022-03-03 | 2022-05-17 | 海洋石油工程股份有限公司 | Offshore oil platform jacket grouting process |
| CN115045330A (en) * | 2022-05-11 | 2022-09-13 | 西安向阳航天材料股份有限公司 | Inflatable active packer |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4968184A (en) * | 1989-06-23 | 1990-11-06 | Halliburton Company | Grout packer |
| CN1313927A (en) * | 1998-08-19 | 2001-09-19 | 赵喜南 | Grouting pipe equipment and method of grouting using the same for an underground water well |
| CN102733385A (en) * | 2012-05-09 | 2012-10-17 | 中国京冶工程技术有限公司 | Fully-recycled body expanding anchor rod and construction method for anchoring ground using same |
| EP2672016A1 (en) * | 2012-06-04 | 2013-12-11 | RWE Innogy GmbH | Grout seal and method to grout an annular space between two foundation members of an offshore structure |
| CN105133661A (en) * | 2015-08-11 | 2015-12-09 | 深圳市腾海油田工程技术有限公司 | Inflatable packer based on undersea pile leg |
| CN208456547U (en) * | 2018-07-16 | 2019-02-01 | 山东南海气囊工程有限公司 | Series connection compression packer |
-
2018
- 2018-07-16 CN CN201810775707.8A patent/CN108729873B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4968184A (en) * | 1989-06-23 | 1990-11-06 | Halliburton Company | Grout packer |
| CN1313927A (en) * | 1998-08-19 | 2001-09-19 | 赵喜南 | Grouting pipe equipment and method of grouting using the same for an underground water well |
| CN102733385A (en) * | 2012-05-09 | 2012-10-17 | 中国京冶工程技术有限公司 | Fully-recycled body expanding anchor rod and construction method for anchoring ground using same |
| EP2672016A1 (en) * | 2012-06-04 | 2013-12-11 | RWE Innogy GmbH | Grout seal and method to grout an annular space between two foundation members of an offshore structure |
| CN105133661A (en) * | 2015-08-11 | 2015-12-09 | 深圳市腾海油田工程技术有限公司 | Inflatable packer based on undersea pile leg |
| CN208456547U (en) * | 2018-07-16 | 2019-02-01 | 山东南海气囊工程有限公司 | Series connection compression packer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108729873A (en) | 2018-11-02 |
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