CN105569603A - Sealing device for high-temperature well completion - Google Patents
Sealing device for high-temperature well completion Download PDFInfo
- Publication number
- CN105569603A CN105569603A CN201410541373.XA CN201410541373A CN105569603A CN 105569603 A CN105569603 A CN 105569603A CN 201410541373 A CN201410541373 A CN 201410541373A CN 105569603 A CN105569603 A CN 105569603A
- Authority
- CN
- China
- Prior art keywords
- expansion pipe
- metal expansion
- central tube
- metal
- inner ring
- 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
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 54
- 239000002184 metal Substances 0.000 claims abstract description 96
- 229910052751 metal Inorganic materials 0.000 claims abstract description 96
- 230000001681 protective effect Effects 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 6
- 230000008676 import Effects 0.000 claims description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 230000006835 compression Effects 0.000 abstract 3
- 238000007906 compression Methods 0.000 abstract 3
- 239000007788 liquid Substances 0.000 description 5
- 238000012856 packing Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 230000011218 segmentation Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Pipe Accessories (AREA)
Abstract
The invention discloses a sealing device for high-temperature well completion, and belongs to the field of oilfield exploitation. The device comprises: the device comprises a central pipe, two inner rings, a metal expansion pipe, two compression rings, a one-way valve and a sealing sleeve; the two inner rings are respectively sleeved outside two ends of the central tube, the metal expansion tube is sleeved on the central tube, two ends of the metal expansion tube are respectively fixed on the two inner rings, a space is formed between the metal expansion tube and the central tube, the two compression rings are respectively sleeved at two ends of the metal expansion tube, one of the inner rings and one of the compression rings clamps one end of the metal expansion tube, the check valve is installed on the central tube, an inlet of the check valve is communicated with an inner cavity of the central tube, an outlet of the check valve is communicated with the space, and the sealing sleeve is sleeved outside the middle part of the metal expansion tube.
Description
Technical field
The present invention relates to field of oilfield exploitation, particularly a kind of sealing device for high temperature completion.
Background technology
At present, oilfield high temperature well section completion mode, mainly based on barefoot completion, can not realize tube exterior subsection packing, Discrete control exploitation, causes moisture rising in subsequent production process fast, the problem that oil reservoir produced degree is low.And the generation of the problems referred to above will be avoided, just need to seal the annular space between the high-temperature stratum bore hole borehole wall and sleeve pipe, to realize segmentation packing and Discrete control exploitation.
In prior art, mainly employing external packer of pipe seals the annular space between the bore hole borehole wall and sleeve pipe.
Realizing in process of the present invention, inventor finds that prior art at least exists following problem:
Along with the continuous progress of exploration and development technology, oil well depth is to deep-well, ultradeep well development, the feature of deep-well, ultradeep well is that reservoir temperature is very high, the bottom hole temperature (BHT) of 5000m deep-well can reach 150 ~ 250 DEG C, when sealing the annular space between the bore hole borehole wall and sleeve pipe, require that sealing device can be high temperature resistant.Heatproof technical indicator due to domestic packing element is the highest can only reach about 160 DEG C, therefore the external packer of pipe adopting domestic packing element to make cannot meet the needs of deep-well, ultradeep well high temperature completion, though abroad have high-temperature resistant rubber material but expensive, oil field is difficult to bear; External packer of pipe ubiquity is short for sealing life simultaneously, the problem that hermetically-sealed construction bearing capacity is low, and sealing performance is poor, easily occurs leaking.
Summary of the invention
In order to solve the problem of prior art, embodiments provide a kind of sealing device for high temperature completion.Described technical scheme is as follows:
Embodiments provide a kind of sealing device for high temperature completion, described device comprises:
Central tube, two inner ring, metal expansion pipe, two hold-down rings, one way valve and sealing shrouds;
Described two inner ring are set in outside the two ends of described central tube respectively, described metal expansion pipe is set on described central tube, and the two ends of described metal expansion pipe are separately fixed in described two inner ring, clearance space is formed between described metal expansion pipe and described central tube, described two hold-down rings are set in the two ends of described metal expansion pipe respectively, a described inner ring and described hold-down ring clamp one end of described metal expansion pipe, described one way valve is arranged on described central tube, the import of described one way valve and the inner space of described central tube, the outlet of described one way valve is communicated with described clearance space, described sealing shroud is set in outside the middle part of described metal expansion pipe.
In a kind of implementation of the embodiment of the present invention, described metal expansion pipe is the metal tube that material yield strength is lower.
In the another kind of implementation of the embodiment of the present invention; described device also comprises two protective covers at the two ends being set in described metal expansion pipe; described protective cover comprises fixed end and protection end; described fixed end is fixed on described hold-down ring; described protection end extends in the middle part of described metal expansion pipe from described fixed end, described protection end be provided with many be parallel to the axis of described central tube cut groove.
In the another kind of implementation of the embodiment of the present invention, described device comprises multiple described sealing shroud, and multiple described sealing shroud interval is arranged.
In the another kind of implementation of the embodiment of the present invention, described sealing shroud comprises rubber ring and metal cap, and described rubber ring set is located on described metal expansion pipe, and described metal cap is wrapped on described rubber ring.
In the another kind of implementation of the embodiment of the present invention, described metal cap is red copper metal cap.
In the another kind of implementation of the embodiment of the present invention, described device also comprises the joint for connecting well inner sleeve, and described joint is fixed on described central tube one end.
In the another kind of implementation of the embodiment of the present invention, respectively there is an internal thread at the two ends of described joint, and the two ends of described central tube are equipped with external screw thread, and one end of described joint is connected with described central tube one end.
In the another kind of implementation of the embodiment of the present invention, described inner ring is welded on described central tube.
In the another kind of implementation of the embodiment of the present invention, the two ends of described metal expansion pipe are welded in described two inner ring respectively.
The beneficial effect that the technical scheme that the embodiment of the present invention provides is brought is:
By in the sheathed inner ring in central tube two ends, then the two ends of metal expansion pipe are separately fixed in two inner ring, then the two ends of metal expansion pipe are compressed by two hold-down rings, one way valve is provided with between central tube and metal expansion pipe, the import of one way valve is communicated with central tube, the outlet of one way valve is communicated with metal expansion pipe, during the work of this device, liquid enters metal expansion pipe by central tube and one way valve, thus swell metal expansion pipe and sealing shroud, be adjacent to after sealing shroud swells on the borehole wall, play sealing function, during sealing, the range of expansion of the bore hole borehole wall to metal expansion pipe plays restriction, prevent metal expansion pipe swollen bad, good seal performance, in this device, expansion tube is metal material, high temperature high voltage resistant, sealing shroud outside is metal cap, high temperature resistant, sealing shroud is swollen by metal expansion pipe and can be high pressure resistant after being adjacent to the bore hole borehole wall, makes sealing device may be used for the sealing of annular space between the bore hole borehole wall and sleeve pipe in deep-well and ultradeep well, in addition, this device only needs in central tube, to be pressed into liquid, safety simple to operate in use.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of the sealing device for high temperature completion that the embodiment of the present invention provides;
Fig. 2 is the sealing device A-A place sectional view for high temperature completion in Fig. 1.
Detailed description of the invention
For making the object, technical solutions and advantages of the present invention clearly, below in conjunction with accompanying drawing, embodiment of the present invention is described further in detail.
Embodiment
Embodiments provide a kind of sealing device for high temperature completion, see Fig. 1 and Fig. 2, this device comprises:
Central tube 101, two inner ring 102, metal expansion pipe 103, two hold-down rings 104, one way valve 105 and sealing shrouds 107;
Two inner ring 102 are set in outside the two ends of central tube 101 respectively, metal expansion pipe 103 is set on central tube 101, the two ends of metal expansion pipe 103 are separately fixed in two inner ring 102, clearance space 1031 is formed between metal expansion pipe 103 and central tube 101, two hold-down rings 104 are set in the two ends of metal expansion pipe 103 respectively, an inner ring 102 and hold-down ring 104 clamp one end of metal expansion pipe 103, one way valve 105 is arranged on central tube 101, the import of one way valve 105 and the inner space of central tube 101, the outlet of one way valve 105 is communicated with clearance space 1031, sealing shroud 107 is set in outside the middle part of metal expansion pipe 103.
In a kind of implementation of the present embodiment, metal expansion pipe 103 is the metal tube that material yield strength is lower.The metal tube that described material yield strength is lower refers to, plastic strain can be there is when internal hydraulic pressure power is greater than its yield strength, external diameter is swollen, make clearance space 1031 become large, be full of liquid in clearance space 1031 and make metal expansion pipe 103 crush seal overlap 107 and make itself and the borehole wall be close to thus play sealing effectiveness.
Further; sealing device also comprises two protective covers 106 at the two ends being set in metal expansion pipe 103; protective cover 106 comprises fixed end 1061 and protection end 1062; fixed end 1061 is fixed on hold-down ring 104; protection end 1062 extends in the middle part of metal expansion pipe 103 from fixed end 1061; protection end 1062 be provided with many be parallel to the axis of central tube 101 cut groove 1063, such as, shown in Fig. 28 are cut groove.Many the circumference of cutting the preferred centrally pipe 101 of groove 1063 is evenly arranged.Expand to two ends because not retraining to prevent metal expansion pipe 103 two ends in expansion process, and finally cause metal expansion pipe 103 to start to swell to two ends from hold-down ring 104 surface and occur breakage, at metal expansion pipe 103 two ends, cover has protective cover 106, the protection end 1062 of protective cover 106 have multiple parallel to the axis cut groove 1063, make when metal expansion pipe 103 swells to two ends, the protection end 1062 of protective cover 106 can be swollen by metal expansion pipe 103, be umbrella when protecting end 1062 to be swollen and be adjacent on the borehole wall, and owing to protecting end 1062 to be connected on fixed end 1061, metal expansion pipe 103 can be blocked continue to expand to two ends, thus play the effect of restriction and protection metal expansion pipe 103.
In a kind of implementation of the present embodiment, this device can only include a sealing shroud 107.In another embodiment of the invention, this device can also comprise multiple sealing shroud 107, and multiple sealing shroud 107 interval is arranged, and adopts multiple sealing shroud 107 can reduce manufacture and assembly difficulty.
Particularly, sealing shroud 107 comprises rubber ring 1071 and metal cap 1072, and rubber ring 1071 is set on metal expansion pipe 103, and metal cap 1072 is wrapped on rubber ring 1071.When metal expansion pipe 103 is swollen by hydraulic pressure, crush seal cover 107 makes it be swollen and finally be adjacent to the bore hole borehole wall simultaneously.The material of the metal cap 1072 of composition sealing shroud 107 is metals that yield strength is lower, plastic strain is there is when being subject to metal expansion pipe extruding, the bore hole borehole wall can not only be adjacent to, and the irregular pit that the borehole wall may exist can be embedded, play the effect of annular space between complete Sealed casing pipe and the bore hole borehole wall.In addition, in sealing shroud 107, metal cap 1072 is corrosion-resistant, and metal cap 1072 wraps up rubber ring 1071 completely, rubber ring 1071 and borehole fluid are separated, to avoid in well, high temperature fluid is to the erosion of rubber ring 1071, and guarantee that this seal heat-resisting ability is stronger, sealing life is longer.
Wherein, metal cap 1072 can be the metal metal cap that red copper metal cap or yield strength and hardness are lower.
Further, this device also comprises the joint 108 for connecting well inner sleeve, and joint 108 is fixed on central tube 101 one end.Particularly, central tube 101 two ends all can female connector pipe.Part sleeve pipe is connected to joint 108 from hanger, and a part of sleeve pipe is connected to shaft bottom from central tube 101.
Particularly, joint 108 and central tube 101 are threaded connection.Respectively there is an internal thread at the two ends of joint 108, and central tube 101 two ends are equipped with external screw thread, and one end of joint 108 is connected with one end of central tube 101.
In a kind of implementation of the present embodiment, inner ring 102 is welded on central tube 101.The two ends of metal expansion pipe 103 are welded in two inner ring 102 respectively.
In other implementations of the present embodiment, inner ring 102 and metal expansion pipe 103 can also adopt other modes to fix, as fixing in bolt etc.
The embodiment of the present invention is passed through in the sheathed inner ring in central tube two ends, then the two ends of metal expansion pipe are separately fixed in two inner ring, then the two ends of metal expansion pipe are compressed by two hold-down rings, one way valve is provided with between central tube and metal expansion pipe, the import of one way valve is communicated with central tube, the outlet of one way valve is communicated with metal expansion pipe, during the work of this device, liquid enters metal expansion pipe by central tube and one way valve, thus swell metal expansion pipe and sealing shroud, be adjacent to after sealing shroud swells on the borehole wall, play sealing function, during sealing, the range of expansion of the bore hole borehole wall to metal expansion pipe plays restriction, prevent metal expansion pipe swollen bad, good seal performance, in this device, expansion tube is metal material, high temperature high voltage resistant, sealing shroud outside is metal cap, high temperature resistant, sealing shroud is swollen by metal expansion pipe and can be high pressure resistant after being adjacent to the bore hole borehole wall, makes sealing device may be used for the sealing of annular space between the bore hole borehole wall and sleeve pipe in deep-well and ultradeep well, in addition, this device only needs in central tube, to be pressed into liquid, safety simple to operate in use.To sum up, this device construction technology is simple, easy to operate, rational in infrastructure, safe and reliable, can realize carrying out permanently effective segmentation packing and Discrete control exploitation to deep-well, ultradeep well high-temperature stratum barefoot interval, improves oil reservoir produced degree, avoids the waste of petroleum resources.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. for a sealing device for high temperature completion, it is characterized in that, described device comprises:
Central tube, two inner ring, metal expansion pipe, two hold-down rings, one way valve and sealing shrouds;
Described two inner ring are set in outside the two ends of described central tube respectively, described metal expansion pipe is set on described central tube, and the two ends of described metal expansion pipe are separately fixed in described two inner ring, clearance space is formed between described metal expansion pipe and described central tube, described two hold-down rings are set in the two ends of described metal expansion pipe respectively, a described inner ring and described hold-down ring clamp one end of described metal expansion pipe, described one way valve is arranged on described central tube, the import of described one way valve and the inner space of described central tube, the outlet of described one way valve is communicated with described clearance space, described sealing shroud is set in outside the middle part of described metal expansion pipe.
2. device according to claim 1, is characterized in that, described metal expansion pipe is the metal tube that material yield strength is lower.
3. device according to claim 1; it is characterized in that; described device also comprises two protective covers at the two ends being set in described metal expansion pipe; described protective cover comprises fixed end and protection end; described fixed end is fixed on described hold-down ring; described protection end extends in the middle part of described metal expansion pipe from described fixed end, described protection end be provided with many be parallel to the axis of described central tube cut groove.
4. device according to claim 1, is characterized in that, described device comprises multiple described sealing shroud, and multiple described sealing shroud interval is arranged.
5. device according to claim 1, is characterized in that, described sealing shroud comprises rubber ring and metal cap, and described rubber ring set is located on described metal expansion pipe, and described metal cap is wrapped on described rubber ring.
6. device according to claim 5, is characterized in that, described metal cap is red copper metal cap.
7. device according to claim 1, is characterized in that, described device also comprises the joint for connecting well inner sleeve, and described joint is fixed on described central tube one end.
8. device according to claim 7, is characterized in that, respectively there is an internal thread at the two ends of described joint, and described central tube two ends are equipped with external screw thread, and one end of described joint is connected with one end of described central tube.
9. the device according to any one of claim 1-8, is characterized in that, described inner ring is welded on described central tube.
10. the device according to any one of claim 1-8, is characterized in that, the two ends of described metal expansion pipe are welded in described two inner ring respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410541373.XA CN105569603A (en) | 2014-10-14 | 2014-10-14 | Sealing device for high-temperature well completion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410541373.XA CN105569603A (en) | 2014-10-14 | 2014-10-14 | Sealing device for high-temperature well completion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105569603A true CN105569603A (en) | 2016-05-11 |
Family
ID=55880159
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410541373.XA Pending CN105569603A (en) | 2014-10-14 | 2014-10-14 | Sealing device for high-temperature well completion |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105569603A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108397176A (en) * | 2017-02-08 | 2018-08-14 | 中国石油化工股份有限公司 | A kind of horizontal well injecting type segmentation packing steam injection string and technique |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000058601A1 (en) * | 1999-03-29 | 2000-10-05 | Socomine 'societe De Cooperation Miniere Et Industrielle' | Wellbore packer |
| US20070056749A1 (en) * | 2005-09-14 | 2007-03-15 | Schlumberger Technology Corporation | Dynamic Inflatable Sealing Device |
| CN201027527Y (en) * | 2007-04-26 | 2008-02-27 | 曹庆仁 | Plugging device |
| CN201835779U (en) * | 2010-02-10 | 2011-05-18 | 谷粒 | Oil expansion pipe seat sealing system |
| CN102459806A (en) * | 2009-05-27 | 2012-05-16 | 里德威尔服务有限公司 | Active external casing packer (ecp) for frac operations in oil and gas wells |
| CN202451105U (en) * | 2012-01-31 | 2012-09-26 | 中国石油化工股份有限公司 | End part outburst-prevention protection device for self-expanding packer |
| CN103717830A (en) * | 2012-03-16 | 2014-04-09 | 索泰尔实业公司 | Device for insulating a portion of a well |
| CN203939478U (en) * | 2013-11-22 | 2014-11-12 | 中国石油天然气股份有限公司 | Hydraulic expansion type high-temperature well completion packer |
-
2014
- 2014-10-14 CN CN201410541373.XA patent/CN105569603A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000058601A1 (en) * | 1999-03-29 | 2000-10-05 | Socomine 'societe De Cooperation Miniere Et Industrielle' | Wellbore packer |
| US20070056749A1 (en) * | 2005-09-14 | 2007-03-15 | Schlumberger Technology Corporation | Dynamic Inflatable Sealing Device |
| CN201027527Y (en) * | 2007-04-26 | 2008-02-27 | 曹庆仁 | Plugging device |
| CN102459806A (en) * | 2009-05-27 | 2012-05-16 | 里德威尔服务有限公司 | Active external casing packer (ecp) for frac operations in oil and gas wells |
| CN201835779U (en) * | 2010-02-10 | 2011-05-18 | 谷粒 | Oil expansion pipe seat sealing system |
| CN202451105U (en) * | 2012-01-31 | 2012-09-26 | 中国石油化工股份有限公司 | End part outburst-prevention protection device for self-expanding packer |
| CN103717830A (en) * | 2012-03-16 | 2014-04-09 | 索泰尔实业公司 | Device for insulating a portion of a well |
| CN203939478U (en) * | 2013-11-22 | 2014-11-12 | 中国石油天然气股份有限公司 | Hydraulic expansion type high-temperature well completion packer |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108397176A (en) * | 2017-02-08 | 2018-08-14 | 中国石油化工股份有限公司 | A kind of horizontal well injecting type segmentation packing steam injection string and technique |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202970607U (en) | High-temperature-resistant double-rubber-cylinder water plugging packer for casing change well | |
| CN202483507U (en) | High-pressure sealing rubber barrel assembly | |
| CN204252931U (en) | Water injection packer | |
| WO2017111661A1 (en) | Small immersion pump assembly | |
| CN107893641B (en) | A kind of underground work metal packer and method | |
| CN204060585U (en) | Continuous circulation valve | |
| CN105672934B (en) | The closed Anticreep packer of hydraulic cylinder-type | |
| CN107893642B (en) | A kind of application method of underground work metal packer | |
| CN103541681A (en) | High-temperature-resistant high-pressure-resistant cross-class compression type seal component for bushes and barefoot wells | |
| CN210714594U (en) | Oil production wellhead assembly with spring safety valve | |
| CN105569603A (en) | Sealing device for high-temperature well completion | |
| CN209339903U (en) | A kind of high-temperature and high-presure resistent small size packer | |
| CN108999577B (en) | Variable-diameter double-layer pipe connecting device for solid-state fluidization exploitation of hydrate | |
| CN201103356Y (en) | Packing and sealing device for oil-well rig water tap washing pipe with butterfly spring | |
| CN108060905B (en) | High-temperature high-pressure packer | |
| CN215108847U (en) | Novel multifunctional bridge plug packer | |
| CN204266981U (en) | The airtight Anticreep packer of a kind of hydraulic cylinder-type | |
| CN205225142U (en) | Take sleeve pipe to set upright or straight geothermol power well head assembly of structure | |
| CN204082061U (en) | Fracture used high-pressure sand-proof hydraulic anchor | |
| CN205135579U (en) | Locking resistance-reducing centralizer for horizontal well casing type composite perforation | |
| CN203939478U (en) | Hydraulic expansion type high-temperature well completion packer | |
| CN203796215U (en) | Packer | |
| CN201443352U (en) | Anchoring expansion packer | |
| CN202707015U (en) | Equilibrium differential external casing packer | |
| CN202381020U (en) | Polish rod grease injection sealing device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160511 |
|
| RJ01 | Rejection of invention patent application after publication |