CN101538990A - System and method for protecting underground component during arrangement and borehole adjustment - Google Patents
System and method for protecting underground component during arrangement and borehole adjustment Download PDFInfo
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- CN101538990A CN101538990A CN200810083048A CN200810083048A CN101538990A CN 101538990 A CN101538990 A CN 101538990A CN 200810083048 A CN200810083048 A CN 200810083048A CN 200810083048 A CN200810083048 A CN 200810083048A CN 101538990 A CN101538990 A CN 101538990A
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Abstract
The invention provides technology for temporarily protecting a well system during transmission, underground motion and/or initial underground operation. A protective sacrificial element made from a sacrificial material is arranged close to an easy-damaged well system component. The protective sacrificial element is at least partially soluble in fluid of a borehole so that the element can be conveniently removed after the required time period. Once the temporary protective sacrificial element is removed, the protective well system component can be completely operated.
Description
Technical field
The present invention relates to a kind of system and method at layout and well conditioning period protection underground component.
Background technology
During the installation process, well equipment is moved in the well and may have damage effect to the plurality of devices parts to the down-hole.This frangible effect is like this especially for fragile part, seal member and easy crooked parts.Such parts may be damaged owing to the impact with on every side well, sleeve pipe, bushing pipe or open pore open hole portion.In case navigate to the down-hole, this impact may produce functional wearing and tearing or other damages of the described equipment of restriction.Also may be because the corrosion of component materials or the pollution of parts cause this damage in the mode that influences its operation.
In some applications, the underground equipment parts comprise and are used for forming the potted component of sealing with miscellaneous part or with on every side well bore wall (for example sleeve pipe).Before described potted component arrives final destination, down-hole,, therefore may be damaged owing to slide past sleeve pipes hundreds of or thousands of feet.Because described potted component forms by plastics or softer material, may damage one or more a plurality of potted component with the impact of on every side well bore wall, bar or other equipment, and limit potted component and form the ability that satisfied down-hole seals.
Summary of the invention
In general, the invention provides the technology that a kind of parts that prevent the well system are damaged.Near the well arrangements of components expendable material of sensitive for damages so that the temporary protection to described parts to be provided.Described expendable material is used for protection borehole systems parts during described system is installed to down well placement.For example, described material can protect the well parts of sensitive for damages owing to the damage of being impacted that reason caused.But expendable material also can temporary protection well parts avoids being subjected to the influence of other potential damage effects of abominable borehole environment between the installation period of system.
Description of drawings
After this specific embodiment of the present invention describes with reference to the accompanying drawings, and wherein identical reference number is represented components identical, and:
Fig. 1 be according to embodiments of the invention, the well device systems when the down-hole moves to well, have the front view of embodiment of well device systems of the parts of at least one sensitive for damages;
Fig. 2 is according to an embodiment of the invention, is used for protecting the part viewgraph of cross-section of an embodiment of the sacrifice element of of the well device systems that is presented at Fig. 1 or more a plurality of parts;
Fig. 3 is according to an embodiment of the invention, is used for protecting the part viewgraph of cross-section of another embodiment of the sacrifice element of of the well device systems that is presented at Fig. 1 or more a plurality of parts;
Fig. 4 is according to an embodiment of the invention, is used for protecting the part viewgraph of cross-section of another embodiment of the sacrifice element of of the well device systems that is presented at Fig. 1 or more a plurality of parts;
Fig. 5 be according to an embodiment of the invention, lateral view with example of well parts potted component, that may be damaged;
Fig. 6 is according to embodiments of the invention, the lateral view similar to Fig. 5, has shown to be arranged to and to sacrifice the adjacent described well parts of arrangements of elements;
Fig. 7 be according to an embodiment of the invention, the part viewgraph of cross-section of sacrificing another embodiment of element, described sacrifice element is used for preventing to be presented at one of well device systems among Fig. 1 or more a plurality of parts and being activated too early by one or more a plurality of parts are locked in required state temporarily; With
Fig. 8 is according to embodiments of the invention, the part viewgraph of cross-section similar to Fig. 7, but shown remove sacrifice element after or more a plurality of parts of actuating.
The specific embodiment
In following manual, having described a plurality of details provides for the understanding of the present invention.But those of ordinary skill it should be understood that, the present invention can implement under the situation of these details not having, and with multiple variation or the modification of described embodiment be possible.
The present invention relates to be used for the system and method for the well parts of protection sensitivity during for example fitting operation and early stage acquisition phase.The possibility of damaging the well parts during being sent to well is very big, particularly for frangible relatively parts, for example seal.Therefore, native system and method may be at providing temporary protection to the impact that damages responsive well parts, and described impact for example is that wearing and tearing, burn into pollute and other environmental effects.In many application, reaching when the well parts before their the final well destination, provide described protection to sliding past casing hundreds of or the dried foot of number.
With reference to Fig. 1, the embodiment of well system 20 is shown as it and is installed in the well 22 generally.But well system 20 also can be in early stage production phase for example, be positioned at the desired position.By example, well system 20 can comprise completion 24, and described completion 24 has a plurality of well parts 26,28,30 and 32.
In the example shown, design electric submersible pumping system 20 is used for being arranged in well 22, and described well 22 has pierced geo-logical terrain 34, and described stratum 34 comprises the fluid of required collection, for example oil.In at least some were used, well 22 was alignd with well bore casing 36.A plurality of perforations 37 form by well bore casing 36 so that fluid around stratum 34 and well 22 between flow.
In the described well parts at least one, for example parts 30 are by 38 protections of sacrificing protection element, for example interim covering 40 of locating around well parts 30.In this embodiment; sacrificing protection element 38 prevents that described parts are subjected to owing to the damage that wearing and tearing, burn into pollute or other damages are caused, and these wearing and tearing, burn into pollute or other damages are that the initial operation that moves through well and/or well system 20 causes.Shown interim covering 40 is formed by soluble material at least in part, so that well parts 30 exposed in well 22 selectively in the required time.Therefore, in case well system 20 is positioned at desired positions in the well 22, during the sending into of well system 20 and/or during the process that initially goes into operation, one or more a plurality of well parts 30 can be protected with interim covering 40.As a result, interim covering 40 removes automatically, and exposes one or more a plurality of well parts 30, so that the proper handling within described well.
Can on the various times during the installation process, interim covering 40 be applied to parts 30.For example, interim covering 40 can be adjacent with parts 30 around parts 30 or installation before being transferred to the well location that forms well 22 along described surface.Covering 40 can both also be used to protect one or more a plurality of parts 30 between the installation period of well system 20 before the installation of well system 20 like this, temporarily.Even when during sending into, not needing protection; used before surface transmission that covering 40 has been avoided otherwise will time and the cost relevant with removing interim covering 40; because along with described covering 40 immerses and dissolving within well 22, covering 40 removes from described parts 30 automatically.Therefore, keep the to the last possible moment of described protection, and the time that reduces to bore, do not remove stage makeup and costume because do not need.In some applications, the material and the thickness of interim covering 40 are chosen to dissolve described soluble material, and covering 40 need be than the final longer a little time cycle of degree of depth needs that well system 20 must be moved to its well 22 from follow-up the removing of parts 30.
In Fig. 2-4, shown the example of interim covering 40.At first with reference to Fig. 2, the embodiment of interim covering 40 comprises layer 42, and described layer 42 has thickness sufficient and comes guard block 30 to avoid owing to the wall impact that is subjected to well 22 damages.In this embodiment, layer 42 thickness is greater than the thickness of coating, and is designed to the buffer unit 30 that antagonism may be impacted during sending into.Layer 42 is formed by soluble material 44, dissolves with required speed when described soluble material is selected to well fluids within being exposed to well 22.Therefore, during well system 20 moves to desired position within the well, by soluble material being immersed the dissolving of controlling interim covering 40 in the fluid that appears within the well 22.Alternatively, fluid media (medium) also can add the dissolving of well with control material 44 to.
Layer 42 can form lining 46, and described lining 46 surrounds parts 30 around its longitudinal axis.In many application, layer 42 be provided with near parts 30 and be positioned at parts 30 and can vitiable structure (for example by sleeve pipe 36 formed well bore wall) between.In fact, the external surface 48 that layer 42 can directly adhere to parts 30, and no matter whether layer 42 forms lining 46 or form some other form of structure.
In Fig. 3, interim covering 40 comprises the internal layer 50 that is formed by soluble material 44.Internal layer 50 is covered by coating 52, described coating 52 is designed to, the well system install or operation sequence during, prevent that soluble material 44 is exposed to dissolution fluids up to the required time.Coating 52 degradables or by provide suitable input (end) to remove in the down-hole.For example, coating 52 can be chosen to it for thermo-responsive.In this embodiment, in case coating 52 required degree of depth place within well 22 is exposed to sufficient heat, described coating degraded, this will make internal layer 50 be exposed to the well fluids that can dissolve internal layer 50.In another embodiment, coating 52 can be designed to degrading under the pressure fully, described sufficient pressure or be provided at specific borehole depth place naturally or the artificially provides by exerting pressure from for example surface location.In other embodiment, coating 52 can be designed to, degrade when being exposed to the particular chemical thing of guiding the down-hole into.In these embodiment arbitrary, coating 52 prevents that internal layer 50 from disappearing, up to the special time cycle that wherein pressure or temperature for example cause coating 52 to lose efficacy, the dissolving of initialization internal layer 50 like this.In case internal layer 50 is dissolved, exposed component 30 just in order to operate.In this embodiment and other embodiment, one or more a plurality of parts 30 can comprise control line 54, and described control line 54 is by interim covering 40 whole or partly protections.
Totally, shown another example of protection covering 40 with reference to Fig. 4.In this embodiment, protection covering 40 is formed by durable lining 56, and described lining is adjacent to be held in place by solubilized structural member 58 and parts 30.Durable lining 56 is formed by the material that can not dissolve in well fluids, for example non-solvable elastomeric material.Correspondingly, when the parts 30 of well system 20 moved in the wells 22 and are immersed in the well fluids, 58 dissolvings of solubilized structural member also discharged durable lining 56.In this stage, durable lining 56 slips off with functional unit 30 suitably simply from parts 30.
With reference to Fig. 5,6, shown to can be changed into the concrete example that is used for one type parts 30 of interim covering 40 installations especially.In this embodiment, well parts 30 comprise packer 60, and described packer 60 has one or more a plurality of potted component 62, and described potted component 62 is positioned within the well 22 and forms seal.For example, potted component 62 can be used for forming sealing between packing body 64 and casing 36.In the example shown, packer 60 comprises four potted components 62, described potted component 62 comprise two towards the cup seal members 66 of down-hole and two towards last cup seal element 68, preferably as shown in Figure 5.For some application, the mode of potted component 62 design is, produces slight interference with respect to casing 36, slides past the possibility that has increased the damage potted component when hundreds of or number is done the well bore casing of foot like this before they arrive final packer destination.
In order to prevent from potted component 62 is caused the function of damage and protecting packer 60, covering 40 is applied on the well parts 30, as shown in Figure 6.When parts 30 when the down-hole is moved, interim covering 40 provides the protectiveness bar between potted component 62 and casing on every side 36.A plurality of holes or perforation 69 can increase to described interim covering 40 with convenient during sending into and/or the pressure equalizing of initial pressure cycle period.Described covering 40 slides and is used as sliding-contact along well bore wall and protects potted component to avoid the infringement of well bore wall.In the embodiment shown in Fig. 6, covering 40 can be configured to the form of lining 46, and described lining 46 is by soluble material 44 structures, and this is shown in more detail among Fig. 2 generally.But the example that is presented among Fig. 6 also can utilize other embodiment of covering 40 to protect one or more a plurality of potted component 62, for example the embodiment that shows in greater detail among Fig. 3,4.In this application, interim covering 40 is designed to guard block 30 and potted component 62 and is placed in up to packer 60 at least and is used for the required borehole position that engages with well bore casing 36.After interim covering 40 dissolvings and exposing described potted component 62, can activate packer 60 and move described potted component 62 relative to sleeve pipe 36.Be noted that packer 60 can cooperate with other well system units, for example longitudinally extend through or more a plurality of control line 70 of described packer.
Another embodiment of sacrificing protection element 38 is presented among Fig. 7,8.In this embodiment, well system 20 comprises the parts (for example parts 28) with or more a plurality of moveable part 72 and or more a plurality of standing part 74.Sacrificing protection element 38 is forms of interim element 76, and described interim element 76 guard blocks 28 prevent in transmission, send in the hole or the early stage actuating of early stage operating period.Interim element 76 is the solubilized parts that temporarily stop the motion of moveable part 72 with respect to standing part 74, only guarantees thus after the time of scheduled volume or can obtain the specific function of well parts 28 after other trigger mechanisms have begun to dissolve interim element 76.In case dissolved sacrificing protection element 38 (the interim element 76 among this embodiment), described parts can activate by the relative motion of part 72,74, shown in the best among Fig. 8.Interim element 76 can be used for alternative as current be used for transmission, early stage production phase of sending into or operating temporarily with as described in parts shear stress bolt (shear shrew) or other mechanical lock mechanisms of being held in place.
The certain components that is used for this well system 20 can change according to the employed real well application of system.Similarly, the certain components 28,30 by 38 protections of sacrificing protection element can differ from one another according to the application of well.In addition, the customized configuration of element 38 and structure can be suitable for being capped or protected specific features, the environmental factor that is associated with given well application and other design considerations.In any case; 38 designs of sacrificing protection element have enough material thicknesses; to provide protection to parts, prevent since send into the initial start process during the impact experienced the damage that feature caused relevant and/or protect the actuating in advance that before it is used for the down-hole, prevents parts with other wells.
Correspondingly, although described only some embodiment of the present invention in the above in detail, those of ordinary skill is obviously understood, and can carry out many modifications under situation without departing the teaching of the invention.Such modification will be included within protection scope of the present invention that claim limits.
Claims (27)
1. one kind is arranged into method in the well with parts to the down-hole, comprising:
With the potted component of soluble material protection well parts, to the down-hole between moving period, described soluble material can be protected described potted component;
Described well parts are moved into described well; With
Described soluble material is dissolved within the described well to expose described potted component.
2. method according to claim 1, wherein said protection step comprise the lining with soluble material be placed on described potted component around.
3. method according to claim 1 also comprises with coating covering described soluble material, described coating degradable when specific input.
4. method according to claim 1, wherein said protection step comprise durable lining are placed on the potted component, and durable lining be held in place with soluble material temporarily.
5. method according to claim 1, wherein said dissolving step comprise the well parts are remained in the wellbore fluid up to dissolving.
6. method according to claim 1, wherein said protection step are included in to the down-hole and cover a plurality of potted components between moving period.
7. method according to claim 1, wherein said protection step is included in to the down-hole and covers packer component between moving period.
8. method according to claim 1, wherein said protection step is included in to the down-hole covers the cover cup type packer component between moving period.
9. method according to claim 1, wherein said dissolving step are included in to the down-hole and are partly dissolved described soluble material between moving period at least.
10. method according to claim 1, wherein said protection step comprise that the described soluble material in location is with well bore wall slip relatively during sending into.
11. the method for the parts that a protection will be moved to the down-hole comprises:
Be chosen in the material that can within borehole environment, dissolve after the required time period;
When described well parts when move the down-hole, the well parts are covered to protect described well parts with described material; With
Provide described material between described well parts and well bore wall on every side, to contact preventing with abundant thickness.
12. method according to claim 11 also is included under the state of covering the well parts is transported to well location; Described well parts are moved in the described well, wait for described material dissolves; With the described well parts of operation.
13. method according to claim 11, wherein said covering step are included in and apply described material on the well parts, and described material is coated with degradable layer under sufficient temperature.
14. method according to claim 11, wherein said covering step are included in and apply described material on the well parts, and described material is coated with degradable layer under sufficient pressure.
15. method according to claim 11, wherein said covering step are included in and apply described material on the well parts, and described material is coated with degradable layer when being exposed to specific medium.
16. one kind is used for the system of arrangements of components to well comprised:
The well system has the parts in the well of being applied to; With
Covering, to protect described parts when sending into described well, described covering is partly dissolved within the described well described covering can be removed from described parts described covering at least around described positioning parts.
17. system according to claim 16, wherein said parts comprise seal member.
18. system according to claim 16, wherein said parts comprise packer.
19. system according to claim 16, wherein said parts surround with described covering.
20. system according to claim 16, wherein said covering forms and is arranged on described parts lining on every side.
21. system according to claim 16, wherein said covering comprises the material that multilayer is different.
22. system according to claim 16, wherein said covering comprises the durable lining that is adjacent to be held in place by soluble material and described parts.
23. a method comprises:
Structure has the well equipment post of well parts, and described well parts have a plurality of parts, and described a plurality of parts can relative to each other move between the period of energization of described well parts; With
Stop the relative motion of described a plurality of parts with the solubilized element temporarily.
24., also comprise described well equipment post sent into well according to the method for claim 23.
25., also comprise described solubilized element is dissolved in the described well according to the method for claim 24.
26., also comprise topping is applied to the solubilized element according to the method for claim 23.
27., also be included in the described solubilized element of dissolving and activate described well parts afterwards according to the method for claim 25.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810083048A CN101538990A (en) | 2008-03-18 | 2008-03-18 | System and method for protecting underground component during arrangement and borehole adjustment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810083048A CN101538990A (en) | 2008-03-18 | 2008-03-18 | System and method for protecting underground component during arrangement and borehole adjustment |
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| Publication Number | Publication Date |
|---|---|
| CN101538990A true CN101538990A (en) | 2009-09-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN200810083048A Pending CN101538990A (en) | 2008-03-18 | 2008-03-18 | System and method for protecting underground component during arrangement and borehole adjustment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104204401A (en) * | 2012-02-03 | 2014-12-10 | 贝克休斯公司 | Wiper plug elements and methods of stimulating a wellbore environment |
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| CN1432096A (en) * | 2000-05-31 | 2003-07-23 | 国际壳牌研究有限公司 | Method and system for reducing longitudinal fluid flow around permeable well tublar |
| GB2411918A (en) * | 2004-03-12 | 2005-09-14 | Schlumberger Holdings | Sealing system |
| US20060272806A1 (en) * | 2005-01-31 | 2006-12-07 | Wilkie Arnold E | Swelling packer with overlapping petals |
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2008
- 2008-03-18 CN CN200810083048A patent/CN101538990A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1432096A (en) * | 2000-05-31 | 2003-07-23 | 国际壳牌研究有限公司 | Method and system for reducing longitudinal fluid flow around permeable well tublar |
| GB2380752B (en) * | 2000-05-31 | 2004-06-30 | Shell Int Research | Method and system for reducing longitudinal fluid flow around a permeable well tubular |
| US7059410B2 (en) * | 2000-05-31 | 2006-06-13 | Shell Oil Company | Method and system for reducing longitudinal fluid flow around a permeable well |
| GB2411918A (en) * | 2004-03-12 | 2005-09-14 | Schlumberger Holdings | Sealing system |
| US20050199401A1 (en) * | 2004-03-12 | 2005-09-15 | Schlumberger Technology Corporation | System and Method to Seal Using a Swellable Material |
| US20060272806A1 (en) * | 2005-01-31 | 2006-12-07 | Wilkie Arnold E | Swelling packer with overlapping petals |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104204401A (en) * | 2012-02-03 | 2014-12-10 | 贝克休斯公司 | Wiper plug elements and methods of stimulating a wellbore environment |
| CN104204401B (en) * | 2012-02-03 | 2018-04-24 | 贝克休斯公司 | The method for scraping plug member and increasing production oil well environment |
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Application publication date: 20090923 |