CN104165054A - Testing device and method for detecting performance of locking mechanism of packer - Google Patents
Testing device and method for detecting performance of locking mechanism of packer Download PDFInfo
- Publication number
- CN104165054A CN104165054A CN201310183631.7A CN201310183631A CN104165054A CN 104165054 A CN104165054 A CN 104165054A CN 201310183631 A CN201310183631 A CN 201310183631A CN 104165054 A CN104165054 A CN 104165054A
- Authority
- CN
- China
- Prior art keywords
- packer
- sleeve
- retaining mechanism
- pressure
- experimental rig
- 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
Abstract
The invention relates to a testing device and method for detecting performance of a locking mechanism of a packer. The device comprises a sleeve, a sealing barrel, elastic pieces and a pressurization nozzle. According to the testing device, the sealing barrel is adopted, so the annulus between the packer and the sleeve can be effectively sealed, and a rubber sleeve under the normal working condition can be effectively simulated. Thus, under the circumstance that the rubber sleeve is not used, the resilience distance and anti-back bearing capacity of the locking mechanism can be independently detected; research and development efficiency of the packer is greatly improved, the packer can be recycled many times, and testing cost is greatly reduced. In addition, resilience of a compression spring is adopted to simulate resilience force of the rubber sleeve, spring materials and performance can be adjusted according to the resilience force and other properties of the rubber sleeve of the packer, and the resilience distance of the unloaded locking mechanism is detected. The testing device is simple in structure, convenient, safe and reliable to operate and capable of being used for simulating the construction process of the packer.
Description
Technical field
The present invention relates to the experimental rig for the packer of the solid completion practice in oil field, be specifically related to a kind of experimental rig and method of the retaining mechanism performance for detection of packer.
Background technology
Packer is as the sealing device of oil down-hole annular shutoff, and its packing sealability is to weigh an important technology index of packer performance, is directly connected to the success or failure of Downhole Construction.
The packing sealing performance of packer, except outside the Pass having with potted component, is restricted by the performance of retaining mechanism also to a great extent.Snap-off-distance, anti-back supporting capacity etc. after retaining mechanism sets, all directly determined the annular space packing ability of packer and the reliability of sealing.And by grasping the technical data such as snap-off-distance, anti-back supporting capacity of retaining mechanism, can provide important reference frame for improving and optimizating of packer.But at present still not for detection of the snap-off-distance of packer retaining mechanism and the experimental rig of anti-back supporting capacity.
Summary of the invention
For the problems referred to above, the object of the present invention is to provide a kind of experimental rig and method of the retaining mechanism performance for detection of packer, can detect snap-off-distance and the anti-back supporting capacity of packer retaining mechanism.
According to a first aspect of the invention, a kind of experimental rig of the retaining mechanism performance for detection of packer has been proposed, comprise, the sleeve of bottom lock, it is for being fixedly mounted in packer to be measured in sleeve, and form annular space between the body of packer and sleeve, on packer body, be provided with retaining mechanism, be installed on the elastic component of the retaining mechanism below of packer, bear against the sealing drum on elastic component, the outer wall of sealing drum engages with the inner wall sealing formula of sleeve, and inwall can engage with the retaining mechanism of packer, for the load maintainer to sealing drum imposed load, load maintainer can promote sealing drum compression elastic piece, and through the outer wall of sleeve and be communicated with the inner chamber of sleeve suppress mouth, be communicated with hydraulic test pump and carry out annular space and suppress by suppressing mouth, to detect the anti-back supporting capacity of retaining mechanism of packer.
According to experimental facilities of the present invention, can test packer on the ground, whole experimental facilities is simple, safety, and can simulate well the work progress of packer, has improved research and development of products efficiency.The restoring force of elastic component can be simulated the screen resilience of packing element, can detect thus the snap-off-distance after retaining mechanism unloading.In a preferred embodiment, elastic component is spring or packing element.
In one embodiment, load maintainer comprises loaded member, pressure transmission plate and pressure-transmission tube, and loaded member loads sealing drum by pressure transmission plate and pressure-transmission tube.
In one embodiment, packer is fixed in sleeve by detent mechanism, and detent mechanism comprises the support tube that is fixed on sleeve bottom, and is fixed on the packer low head at support tube top, and packer low head is connected with packer lower end by sealing thread.In a preferred embodiment, detent mechanism also comprises packer upper cover and backstay end socket, and packer upper cover is threaded in packer upper end; Backstay end socket is threaded connection in sleeve upper end, and backstay end socket is threadedly connected to backstay, and backstay contacts with packer upper cover, and packer is realized to axial location.In test process, this detent mechanism can carry out axial limiting safely and steadly by packer.Particularly backstay end socket is with sleeve for being threaded, and this makes easily to regulate the height of backstay end socket and realizes the packer of different size is carried out to axial limiting.
In one embodiment, sleeve lower end is connected in sleeve low head by sealing thread and realizes sealing.
In one embodiment, on the inside and outside wall of sealing drum, be provided with some sealing rings, with the annular space between packing sleeve and packer.This set can be simulated the state after packing element sets.The reliability that can detect separately like this retaining mechanism in the situation that not using packing element, greatly reduces experimental cost.
In one embodiment, retaining mechanism adopts unidirectional retreating prevention mechanism.In a preferred embodiment, unidirectional retreating prevention mechanism comprises the one in sawtooth jump ring, slope jump ring and straight step jump ring.
According to a second aspect of the invention, propose a kind of method of the retaining mechanism performance for detection of packer, comprised the steps:
Step 10, connects loaded member, by pressure transmission plate and pressure-transmission tube, sealing drum is loaded, and promotes the descending compression elastic piece of sealing drum;
Step 20, measures and records pressure transmission plate upper end to after the distance L of sleeve upper end, unloading, again measure and record pressure transmission plate upper end to the distance L of sleeve upper end ', calculate and set snap-off-distance l, wherein l=L-L ' after retaining mechanism unloading;
Step 30, removes loading equipemtn, removal pressure transmission plate and pressure-transmission tube,
Step 40, measures and records the distance B of packer upper cover upper end to sealing drum upper end;
Step 50, will suppress mouth and connect hydraulic test pump, carry out that water filling is suppressed, voltage stabilizing, the pressure of measuring during voltage stabilizing in sleeve changes, and the anti-back supporting capacity of checking retaining mechanism, if sleeve upper end has liquid to flow out, carrying inefficacy is described, now stops suppressing and recording the pressure in sleeve;
Step 60, again measure and record packer upper cover upper end to the distance B of sealing drum upper end ', calculate the carrying snap-off-distance d of retaining mechanism, wherein d=D-D '.
According to method of testing of the present invention, the pressurizer pressure in sleeve has reflected the performance of retaining mechanism, and the pressurizer pressure in sleeve is larger, illustrates that the performance of retaining mechanism is better.
The present invention is owing to taking above technical scheme, it has following beneficial effect: 1, the present invention is owing to having adopted the design of sealing drum, annular space between energy effective sealing packer body and sleeve, thereby effectively simulate the packing element under normal operating conditions, therefore the snap-off-distance and the anti-back supporting capacity that in packing element situation, detect separately retaining mechanism can not used, the research and development that not only greatly improve packer improve efficiency, and can recycled for multiple times, have greatly reduced experimentation cost.2, the present invention adopts the screen resilience of the restoring force simulation packing element of Compress Spring, and spring material and performance can regulate according to various aspects of performance such as the screen resiliences of packing element, detects the snap-off-distance after retaining mechanism unloading.3, the present invention is provided with and suppresses mouth on sleeve, suppresses the detection that can realize the anti-back supporting capacity to retaining mechanism by annular space.4, when the present invention suppresses the experimental rig of packer retaining mechanism, be provided with backstay end socket in packer body upper end, can, by regulating backstay length, carry out axial limiting to packer body.
Brief description of the drawings
Below in conjunction with accompanying drawing, the present invention is carried out to detailed describing.But only the providing in order to understand better the present invention of accompanying drawing is provided, they not should be understood to limitation of the present invention.
Fig. 1 is the structural representation while loading according to the experimental rig of packer retaining mechanism of the present invention;
Fig. 2 is the structural representation while suppressing according to the experimental rig of packer retaining mechanism of the present invention.
Detailed description of the invention
Contrast accompanying drawing below and by the description of embodiment is illustrated to the present invention in further detail.
Fig. 1 shown load time according to the experimental rig 100 of packer retaining mechanism of the present invention, it comprises sleeve 4, sealing drum 8, elastic component 10 and suppresses mouth 11.Wherein, sleeve 4 can simulated field sleeve pipe, and its lower end is connected with sleeve low head 14 by sealing thread, seal sleeve 4 inside when suppressing.Packer 6 is fixed in sleeve 4 coaxially, and leaves annular space between packer 6 outer walls and sleeve 4 inwalls.The retaining mechanism 7 of packer 6 is arranged in the annular groove of packer 6 outer walls in the mode that can slide axially, and can only be descending along packer 6, can not be up.Sealing drum 8 is arranged on packer 6 outer walls in retaining mechanism 7 outsides in the mode that can slide axially, and the inwall of sealing drum 8 has the locked groove matching with retaining mechanism 7, plays locking anti-back effect.On the inside and outside wall of sealing drum 8, be provided with some sealing rings, with the annular space between packing sleeve 4 and packer 6, can simulate the packing element that sets rear normal work.In the time that the sealing ring on sealing drum 8 inwalls arrives the annular groove on packer 6 outer walls, i.e. seal failure.Elastic component 10 is arranged between the boss of packer 6 outer wall bottoms and the lower end of sealing drum 8, suppresses mouth 11 and is welded in sleeve 4 bottoms and is communicated with the inner chamber of sleeve 4.
In the time that the retaining mechanism 7 to packer 6 loads, in sealing drum 8 upper ends, one pressure-transmission tube 3 is set, in pressure-transmission tube 3 upper ends, one pressure transmission plate 2 is set, and a loaded member 1 is installed on pressure transmission plate 2, loaded member 1 loads sealing drum 8 by pressure transmission plate 2 and pressure-transmission tube 3, promote the descending compression elastic piece 10 of sealing drum 8, the restoring force after elastic component 10 compressions can be simulated the screen resilience after packing element compression, to detect the snap-off-distance after the retaining mechanism 7 of packer 6 unloads.
In a preferred embodiment, packer 6 lower ends are connected with packer low head 12 by sealing thread, seal pack device 6 inside when suppressing.Packer low head 12 bottoms are fixedly connected with support tube 13 tops simultaneously, and support tube 13 bottoms are fixedly connected with sleeve 4, thereby realize the axial location to packer 6.
In a preferred embodiment, sleeve 4 can be a cylindrical shell with closed bottom, now without installing sleeve low head 14.
In a preferred embodiment, elastic component 10 is spring or packing element.
In a preferred embodiment, retaining mechanism 7 is various unidirectional retreating prevention mechanisms, as common sawtooth jump ring, and slope jump ring, straight step jump ring etc.
Fig. 2 has shown the experimental rig 100 according to packer retaining mechanism of the present invention in the time suppressing.Now, removable loaded member 1, removal pressure transmission plate 2 and pressure-transmission tube 3.Meanwhile, will suppress mouth 11 and be communicated with hydraulic test pump and carry out annular space and suppress, to detect the anti-back supporting capacity after retaining mechanism 7 unloadings.
In a preferred embodiment, can be threaded connection in packer 6 upper ends a packer upper cover 5, simultaneously in sleeve 4 upper ends by the blow-by screw rod end socket 15 that is threaded, a screw rod 16 is threaded on screw rod end socket 15, the length of adjusting screw(rod) 16 makes it contact with packer upper cover 5, thereby further packer 6 is realized to axial location.
The experimental rig of the packer retaining mechanism providing in conjunction with the above embodiment of the present invention, the invention allows for the method for detection of the tight mechanism performance of packer lock, and it comprises load step 10-20 and suppresses step 30-60:
101) connect loaded member 1, by pressure transmission plate 2 and pressure-transmission tube 3, sealing drum 8 is loaded, promote the descending compression elastic piece 10 of sealing drum 8.In one embodiment, the descending required axial force of promotion retaining mechanism 7 that test applies in this process is with test, to detect the setting force size of packer.
102) measure and record pressure transmission plate 2 upper ends to after the distance L of sleeve 4 upper ends, unloading, again measure and record pressure transmission plate 2 tops to sleeve 4 top distance L ', can calculate and set snap-off-distance l=L-L ' after retaining mechanism 7 unloadings.Set snap-off-distance l less, the reliability of retaining mechanism 7 is stronger, sets snap-off-distance l larger, and the reliability of retaining mechanism 7 is poorer.
103) remove loaded member 1, removal pressure transmission plate 2 and pressure-transmission tube 3, be installed to packer body 6 upper ends by body upper cover 5.
104) measure and record packer upper cover 5 upper ends after the distance B of sealing drum 8 upper ends, at sleeve 4 upper end connecting screw rod end sockets 15, adjusting screw(rod) 16 makes its contact packer upper cover 5, completes the axial location to packer 6.
105) will suppress mouth 10 and connect Motordriven pressure test pump, carry out according to the performance of the retaining mechanism of packer and test requirements document that water filling is suppressed, voltage stabilizing, the pressure of measuring during voltage stabilizing in sleeve 4 changes, the anti-back supporting capacity of checking retaining mechanism 7, if screw rod end socket 15 places have liquid to flow out, carrying inefficacy is described.In this step, the pressurizer pressure in sleeve 4 is larger, and the opposite force that retaining mechanism 7 is subject to is larger, and this anti-back supporting capacity that has reflected retaining mechanism 7 is stronger.In addition, if the pressure stability in sleeve 4 is constant, prove the rational in infrastructure of this locking device 7, dependable performance, if declining appears in pressure or sleeve 4 upper ends occur that liquid flows out, proves that rollback appears in this locking device, and retaining mechanism lost efficacy.
106) dismantling screw end socket 15, again measure and record packer upper cover 5 upper ends to the distance B of sealing drum 8 upper ends ', calculate the carrying snap-off-distance d of retaining mechanism, d=D-D '.Carrying snap-off-distance d has reflected in actual use, the sealing effectiveness of packer: d is larger for carrying snap-off-distance, the anti-back supporting capacity of retaining mechanism 7 is poorer in practice, the sealability of packer is just poorer, d is less for carrying snap-off-distance, the anti-back supporting capacity of retaining mechanism 7 is stronger in practice, and the sealability of packer is stronger.
The above specific embodiment; object of the present invention, technical scheme and beneficial effect are further described; institute is understood that; the foregoing is only specific embodiments of the invention; be not limited to the present invention, within the spirit and principles in the present invention all, any amendment of making; protection scope of the present invention is equal to replacement, improvement etc., within all should be included in.
Claims (10)
1. for detection of an experimental rig for the retaining mechanism performance of packer, it is characterized in that, this experimental rig comprises,
The sleeve of bottom lock, it is for packer to be measured is fixedly mounted in described sleeve, and forms annular space between the body of described packer and sleeve, on described packer body, is provided with retaining mechanism,
Be installed on the elastic component of the retaining mechanism below of described packer,
Bear against the sealing drum on elastic component, the outer wall of described sealing drum engages with the inner wall sealing formula of described sleeve, and inwall can engage with the retaining mechanism of described packer,
For the load maintainer to described sealing drum imposed load, described load maintainer can promote described sealing drum and compress described elastic component, and
Through the outer wall of described sleeve and is communicated with the inner chamber of described sleeve suppress mouth, by will described in suppress mouth connection hydraulic test pump and carry out annular space and suppress, to detect the anti-back supporting capacity of retaining mechanism of described packer.
2. the experimental rig of a kind of retaining mechanism performance for detection of packer as claimed in claim 1, it is characterized in that, described load maintainer comprises loaded member, pressure transmission plate and pressure-transmission tube, and described loaded member loads described sealing drum by described pressure transmission plate and pressure-transmission tube.
3. the experimental rig of a kind of retaining mechanism performance for detection of packer as claimed in claim 1 or 2, it is characterized in that, described packer is fixed in described sleeve by detent mechanism, described detent mechanism comprises the support tube that is fixed on described sleeve bottom, and being fixed on the packer low head at described support tube top, described packer low head is connected with described packer lower end by sealing thread.
4. the experimental rig of a kind of retaining mechanism performance for detection of packer as claimed in claim 3, is characterized in that, described detent mechanism also comprises packer upper cover and backstay end socket, and described packer upper cover is threaded in described packer upper end; Described backstay end socket is threaded connection in described sleeve upper end, and described backstay end socket is threadedly connected to backstay, and described backstay contacts with described packer upper cover, and described packer is realized to axial location.
5. the experimental rig of a kind of retaining mechanism performance for detection of packer according to any one of claims 1 to 4, is characterized in that, described sleeve lower end is connected in sleeve low head by sealing thread and realizes sealing.
6. the experimental rig of a kind of retaining mechanism performance for detection of packer as described in any one in claim 1 to 5, is characterized in that, is provided with some sealing rings, with the annular space between sleeve described in packing and packer on the inside and outside wall of described sealing drum.
7. the experimental rig of a kind of retaining mechanism performance for detection of packer as described in any one in claim 1 to 6, is characterized in that, described elastic component is spring or packing element.
8. the experimental rig of a kind of retaining mechanism performance for detection of packer as described in any one in claim 1 to 7, is characterized in that, described retaining mechanism adopts unidirectional retreating prevention mechanism.
9. as the experimental rig of above-mentioned a kind of retaining mechanism performance for detection of packer claimed in claim 8, it is characterized in that, described unidirectional retreating prevention mechanism comprises the one in sawtooth jump ring, slope jump ring and straight step jump ring.
10. for detection of a method for the retaining mechanism performance of packer, comprise the steps:
Step 10, connects loaded member, by pressure transmission plate and pressure-transmission tube, sealing drum is loaded, and promotes the descending compression elastic piece of sealing drum;
Step 20, measures and records pressure transmission plate upper end to after the distance L of sleeve upper end, unloading, again measure and record pressure transmission plate upper end to the distance L of sleeve upper end ', calculate and set snap-off-distance l, wherein l=L-L ' after retaining mechanism unloading;
Step 30, removes loading equipemtn, removal pressure transmission plate and pressure-transmission tube,
Step 40, measures and records the distance B of packer upper cover upper end to sealing drum upper end;
Step 50, will suppress mouth and connect hydraulic test pump, carry out that water filling is suppressed, voltage stabilizing, the pressure of measuring during voltage stabilizing in sleeve changes, and the anti-back supporting capacity of checking retaining mechanism, if sleeve upper end has liquid to flow out, carrying inefficacy is described, now stops suppressing and recording the pressure in sleeve;
Step 60, again measure and record packer upper cover upper end to the distance B of sealing drum upper end ', calculate the carrying snap-off-distance d of retaining mechanism, wherein d=D-D '.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310183631.7A CN104165054A (en) | 2013-05-17 | 2013-05-17 | Testing device and method for detecting performance of locking mechanism of packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310183631.7A CN104165054A (en) | 2013-05-17 | 2013-05-17 | Testing device and method for detecting performance of locking mechanism of packer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104165054A true CN104165054A (en) | 2014-11-26 |
Family
ID=51909019
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310183631.7A Pending CN104165054A (en) | 2013-05-17 | 2013-05-17 | Testing device and method for detecting performance of locking mechanism of packer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104165054A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104634514A (en) * | 2015-03-05 | 2015-05-20 | 中国海洋石油总公司 | Device for testing sealing performance of rubber cylinder assembly of packer |
| CN106525714A (en) * | 2015-09-15 | 2017-03-22 | 中国石油化工股份有限公司 | Test device for tail tube top packer |
| CN108732022A (en) * | 2017-04-25 | 2018-11-02 | 中国石油化工股份有限公司 | Device and method for the test of packer pressure-bearing |
| CN109269739A (en) * | 2018-10-12 | 2019-01-25 | 中国石油天然气股份有限公司西南油气田分公司工程技术研究院 | It is a kind of for testing the test tool of packing element performance |
| CN109297655A (en) * | 2018-11-27 | 2019-02-01 | 天鼎联创密封技术（北京）有限公司 | Ground experiment device with disc spring compensation function |
-
2013
- 2013-05-17 CN CN201310183631.7A patent/CN104165054A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104634514A (en) * | 2015-03-05 | 2015-05-20 | 中国海洋石油总公司 | Device for testing sealing performance of rubber cylinder assembly of packer |
| CN106525714A (en) * | 2015-09-15 | 2017-03-22 | 中国石油化工股份有限公司 | Test device for tail tube top packer |
| CN106525714B (en) * | 2015-09-15 | 2019-09-20 | 中国石油化工股份有限公司 | Experimental rig for top packer for tail pipe |
| CN108732022A (en) * | 2017-04-25 | 2018-11-02 | 中国石油化工股份有限公司 | Device and method for the test of packer pressure-bearing |
| CN108732022B (en) * | 2017-04-25 | 2021-01-05 | 中国石油化工股份有限公司 | Device and method for packer pressure bearing test |
| CN109269739A (en) * | 2018-10-12 | 2019-01-25 | 中国石油天然气股份有限公司西南油气田分公司工程技术研究院 | It is a kind of for testing the test tool of packing element performance |
| CN109297655A (en) * | 2018-11-27 | 2019-02-01 | 天鼎联创密封技术（北京）有限公司 | Ground experiment device with disc spring compensation function |
| CN109297655B (en) * | 2018-11-27 | 2023-12-22 | 天鼎联创密封技术（北京）有限公司 | Ground test device with disc spring compensation function |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104165054A (en) | Testing device and method for detecting performance of locking mechanism of packer | |
| CN102564702B (en) | Device and system for testing packer in formation tester | |
| CN101775982A (en) | Microsphere hydraulic sidewall contact device | |
| CN106153469A (en) | Isolated Triaxial tester | |
| CN105319020A (en) | Jacket-type oil casing air tightness detection device and detection method | |
| CN209432674U (en) | A kind of test device of packing element | |
| CN203403859U (en) | Large-pressure-difference double-floating anti-creep packer | |
| CN203594406U (en) | Novel two-direction-setting packer | |
| CN205861336U (en) | A kind of Wellendichtring Work condition analogue double testing mould | |
| CN102879156A (en) | Sealing pressure test method for O-shaped seal rings and sealing device for O-shaped seal rings | |
| CN207609409U (en) | A kind of annular space vent valve | |
| CN201650194U (en) | Rapid pressure-testing tool for well mouth | |
| CN203702064U (en) | Wellhead oil pipe plugging device | |
| CN205370502U (en) | Wedge -type seal ware | |
| CN109083618A (en) | Deep-well binary channels safety valve | |
| CN202501953U (en) | Piston type oil-water isolator | |
| CN202330175U (en) | Reciprocating oil seal pressure-resistant detection device | |
| CN204646166U (en) | A kind of well mouth oil pipe plugging device | |
| CN201486549U (en) | Micro-spherical hydraulic geolock | |
| CN201391296Y (en) | Framework sealing ring and anti-blocking self sealing seal section | |
| CN106988733A (en) | A kind of solid isotope release with automatic pressure-balancing | |
| CN207905755U (en) | A kind of oil well head sealing device | |
| CN208858323U (en) | Deep-well binary channels safety valve | |
| CN206503949U (en) | A kind of inner screw thread gate valve | |
| CN203594402U (en) | Oil tube plugging 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: 20141126 |
|
| RJ01 | Rejection of invention patent application after publication |