CN108287111A - Device for the packing performance for detecting packing element - Google Patents

Device for the packing performance for detecting packing element Download PDF

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Publication number
CN108287111A
CN108287111A CN201710013978.5A CN201710013978A CN108287111A CN 108287111 A CN108287111 A CN 108287111A CN 201710013978 A CN201710013978 A CN 201710013978A CN 108287111 A CN108287111 A CN 108287111A
Authority
CN
China
Prior art keywords
casting die
packing
annular space
heating
mandrel
Prior art date
Application number
CN201710013978.5A
Other languages
Chinese (zh)
Inventor
胡彦峰
牛新明
陶兴华
王果
涂玉林
刘鹏
刘晓丹
索忠伟
张海平
张仁龙
Original Assignee
中国石油化工股份有限公司
中国石油化工股份有限公司石油工程技术研究院
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 中国石油化工股份有限公司, 中国石油化工股份有限公司石油工程技术研究院 filed Critical 中国石油化工股份有限公司
Priority to CN201710013978.5A priority Critical patent/CN108287111A/en
Publication of CN108287111A publication Critical patent/CN108287111A/en

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Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/08Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/08Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
    • G01N3/18Performing tests at high or low temperatures
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/0014Type of force applied
    • G01N2203/0016Tensile or compressive
    • G01N2203/0019Compressive
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/02Details not specific for a particular testing method
    • G01N2203/022Environment of the test
    • G01N2203/0222Temperature
    • G01N2203/0226High temperature; Heating means

Abstract

The present invention relates to a kind of devices for detecting the sealing performance of packing element comprising:Hollow casing, the mandrel being coaxially set in described sleeve pipe, receiving annular space is configured between described sleeve pipe and mandrel, it is arranged in the side for accommodating annular space and closes first casting die for accommodating annular space, it is arranged in the other side for accommodating annular space and closes second casting die for accommodating annular space, and it is constructed to be permeable to the first pressing mechanism to pressurize into the receiving annular space, wherein, at least one of first casting die and second casting die can be moved relative to another in first casting die and second casting die.This device can accurately detect the packing performance of packing element.

Description

Device for the packing performance for detecting packing element

Technical field

The present invention relates to oil/gas well power tool technical field of measurement and test, more particularly to a kind of packing for detecting packing element The device of performance.

Background technology

In oil gas well operations, packing element is the important tool for insulating space in well.Be drilled well, well workover and oil recovery, In the operation process such as gas production, packing element is widely used.Usually used compression type glue barrel can be compressed at its both ends When be radially expanded, with realize packing well in annular space effect.

In the prior art, it is difficult to which the packing performance of packing element is accurately detected.So packing element is used for underground When operation, can usually encounter because packing element selection it is improper due to cause operation to fail the case where.Since the cost of underground work is very high, and And operating difficulties, therefore it is this be unsuccessfully it is very unfavorable, the environment in the progress and well of underground work can be caused very Ill effect.

Therefore, it is necessary to a kind of devices for the packing performance that can accurately detect packing element.

Invention content

In view of the above-mentioned problems, the present invention proposes a kind of device for detecting the packing performance of packing element, this device energy Accurately detect the packing performance of packing element.

A kind of device for detecting the sealing performance of packing element is proposed according to the present invention comprising:Hollow casing, together The mandrel being set in axis in described sleeve pipe is configured with receiving annular space between described sleeve pipe and mandrel, is arranged in the receiving Simultaneously first casting die for accommodating annular space is closed, be arranged in the other side for accommodating annular space and closes the appearance in the side of annular space It receives the second casting die of annular space, and is constructed to be permeable to the first pressing mechanism to pressurize into the receiving annular space, wherein described first At least one of casting die and second casting die can be moved relative to another in first casting die and second casting die It is dynamic.

For this device, packing element can be arranged in the receiving annular space between the first casting die and the second casting die, And it is set on mandrel.At this point, being run through come center when simulating underground work with mandrel, and made to simulate underground with casing Borehole wall when industry or outer tube string.It, can be in a longitudinal direction by the first casting die and the relative motion toward each other of the second casting die Packing element is compressed, is in close contact with casing to make packing element be expanded in radial directions.Thereby, it is possible to simulate packing element to seal in underground The situation of spacer ring sky.At this point, being pressurizeed into receiving annular space by the first pressing mechanism, until pressure leakage.Wink before leakage Between pressure in annular space be maximum pressure that packing element can be born when being insulated, hereon referred to as maximum packing pressure.Pass through The maximum packing pressure obtained with this device to test, can accurately evaluate the packing performance of packing element.

In one embodiment, second casting die be fixedly connected with the mandrel and with described sleeve pipe is sealed contacts, First casting die is fixed relative to described sleeve pipe and is contacted with the stem seal formula, and the mandrel structure is at energy described in First casting die is mobile and second casting die is driven to be moved towards first casting die.In this way, can conveniently have Effect ground makes the second casting die be moved towards the first casting die.

In one embodiment, described device includes being arranged in first casting die backwards to the side of second casting die Piston cylinder, the mandrel structure has the piston for extending in the piston cylinder and being contacted with the inner wall sealing formula of the piston cylinder End, the piston end can move in the piston cylinder.By this set, can easily band moving mandrel and the second casting die move It is dynamic.

In one embodiment, described device includes the second pressing mechanism, and second pressing mechanism is constructed to be permeable to institute It states in the piston cylinder between piston end and first casting die and pressurizes to make the piston end be moved backwards to first casting die. It is pressurizeed into piston cylinder by the second pressing mechanism, piston end can easily be made to be moved away from the first casting die.

In one embodiment, described device further includes heating container, described sleeve pipe, mandrel, the first casting die and the second pressure Part is in the heating container, and at least part of the heating container is made of thermal insulation material.By this heating container, Environment therein can be made to keep at a higher temperature, therefore packing element can be made to be at higher temperature.So, can Maximum packing pressure under hot conditions is detected.

In one embodiment, it is provided with the first heating element on the bottom wall and/or side wall of the heating container.Pass through This set can effectively be such that the temperature in heating container increases.

In one embodiment, heating fluid, the liquid level of the heating fluid and institute are provided in the heating container State that higher alignment in the first casting die and second casting die.By this set, the temperature of the more preferable simulation underground of energy Environment.

In one embodiment, described device further includes the second heating element in the heating fluid, and described the Two heating elements are connected with the bottom wall of the heating container and/or side wall.It, can be preferably to heating fluid by this set It is heated.

In one embodiment, the second heating element be heater strip described in heater strip both ends respectively with heating container not Same side wall is connected or is connected respectively with the bottom wall of heating container and side wall.

In one embodiment, the first pressing mechanism by injecting fluid into the receiving annular space to the receiving ring Sky pressurization, the temperature of the fluid is in the range of 100 DEG C to 200 DEG C.

Compared with the prior art, the advantages of the present invention are as follows:Packing element can be arranged the first casting die and the second casting die it Between receiving annular space in, and be set on mandrel.At this point, run through come center when simulating underground work with mandrel, and with Casing simulates the borehole wall or outer tube string when underground work.By the first casting die and the relative motion toward each other of the second casting die, Packing element can be compressed in a longitudinal direction, be in close contact with casing to make packing element be expanded in radial directions.Thereby, it is possible to Packing element is simulated the downhole packing annular space the case where.At this point, being pressurizeed into receiving annular space by the first pressing mechanism, until leakage. Pressure before leakage in moment annular space is the maximum pressure that packing element can be born when being insulated, hereon referred to as maximum packing pressure Power.By the maximum packing pressure obtained with this device to test, the packing performance of packing element can be accurately evaluated.

Description of the drawings

The invention will be described in more detail below based on embodiments and refering to the accompanying drawings.Wherein:

Fig. 1 is the structural representation according to the present invention for detecting one embodiment of the device of the sealing performance of packing element Figure.

In the accompanying drawings, identical component uses identical reference numeral.Attached drawing is not according to actual ratio.

Specific implementation mode

The present invention will be further described with reference to the accompanying drawings.

Fig. 1 schematically shows the device according to the present invention for detecting the sealing performance of packing element (hereinafter referred to as Device) 100 one embodiment general structure.

As shown in Figure 1, device 100, which includes casing 12 and coaxial-type, is set in the mandrel 14 in casing 12.Casing 12 with It is formed between mandrel 14 substantially in circular receiving annular space.When being detected, packing element 13 can be closely set in The outside of pipe 12.It is accommodated in annular space at this point, packing element 13 will be in.Furthermore it is also possible to be respectively set at the both ends for accommodating annular space close The first casting die 9 and the second casting die 16 of the end are sealed, the first casting die 9 and the second casting die 16 can carry out opposite fortune toward each other Dynamic, this movement can be realized by one movement in the first casting die 9 and the second casting die 16, can also be by the first casting die 9 Common with the second casting die 16 mobile is realized.When packing element 13 is set to and accommodates in annular space, the first casting die 9 and second pressure Part 16 is respectively at the both ends of packing element 13.By making the first casting die 9 and the second casting die 16 mutually towards ground relative motion, first Casting die 9 and the second casting die 16 can contact and squeeze the both ends of packing element 13 respectively, so that packing element 13 is compressed along its longitudinal axis.This When, packing element 13 can be expanded radially into its outer surface and be in contact with the inner surface of casing, and be pressed tightly against shape on the inner surface At sealing.

In above structure and in the process, central tube string when mandrel 14 is equivalent to underground work or similar structure, and cover The borehole wall or outer tube string when pipe 12 is equivalent to underground work or similar structure.As a result, when packing element 13 is pressed tightly against casing When forming sealing on 12 inner surface, which simulates the case where packing element 13 sets in well and insulated annular space.

At this point, increasing the pressure accommodated in annular space by the first pressing mechanism, until packing element 13 no longer can be with casing 12 Inner wall be in close contact until, i.e., until generation pressure leakage until.Preferably, the first pressing mechanism makes the packing element set The pressure of 13 upper annulus increases.In the moment that pressure leakage occurs, the pressure in the upper annulus reduces suddenly, and packing element The pressure of 13 lower part annular space increases suddenly.Such as it can measure and accommodate at the position accommodated in annular space close to the first casting die 9 Pressure in annular space can measure the pressure in the upper annulus of packing element 13 at this time.Alternatively, can also be close in receiving annular space The pressure accommodated in annular space is measured at the position of second casting die 16, can measure the pressure in the lower part annular space of packing element 13 at this time.

Pressure in upper annulus measured by the moment before pressure leakage occurs by the first pressing mechanism (that is, increased To pressure) it is the maximum pressure (maximum packing pressure) that packing element 13 can bear when insulating annular space.It surveys in this way The maximum packing pressure obtained accurately can describe and evaluate the packing performance of packing element 13.

Preferably, the first pressing mechanism may include topping-up pump 2 and be connected to topping-up pump 2 with the upper annulus of packing element 13 Reservoir channel.Hydraulic oil can be injected into upper annulus by the topping-up pump 2 and reservoir channel, to increase in upper annulus Pressure.Reservoir channel can be connected in the sidewall areas 4 close to the first casting die 9 of casing 12 with annular space is accommodated.

As illustrated in fig. 1, it is preferred that can make the second casting die 16 be fixedly linked with mandrel 14 and with the inner wall sealing of casing 12 Formula contacts, with the first casting die 9 of season relative to casing 12 fix and with mandrel 14 is sealed contacts.The first casting die 9 backwards Piston cylinder 10 is arranged in the side of second casting die, and one end of mandrel 14 is configured to extend into the piston end 11 in piston cylinder 10.Piston End 11 can be engaged with the inner wall sealing formula of piston cylinder 10, and can the movement in piston cylinder 10.As a result, when piston end 11 is in piston When in cylinder 10 backwards to the movement of the first casting die 9, mandrel 14 can move, and drive and be secured to connected 16 direction of the second casting die First casting die 9 moves.Preferably, can be as shown in Figure 1, enable the first casting die 9 be disposed over, the setting of the second casting die 16 In lower section.

As shown in Figure 1, the second pressing mechanism can be arranged to promote piston end 11 to move.Second pressing mechanism includes topping-up pump 1 and reservoir channel.The reservoir channel one end is connected to topping-up pump 1, position of the other end between the first casting die 9 and piston end 11 It is communicated at 3 in piston cylinder 10.Hydraulic oil is injected into piston cylinder 10 by topping-up pump 1 as a result, piston end 11 can be promoted backwards First casting die 9 moves.

In addition, heating container 5 can also be arranged as shown in Figure 1.Heat 5 containment sheath 12 of container, mandrel 14, first Casting die 9 and the second casting die 16.As a result, when detecting the packing performance of packing element 13, packing element 13 can be made to be under hot environment, example Such as it is under 150 DEG C or so or 150 DEG C or more of environment.At this point, can be simulated to the hot environment of underground work, thus The packing performance measured is more accurate.Preferably, at least part of heating container 5 is made of thermal insulation material, for example, its bottom wall It is made of thermal insulation material with lower sides.

Preferably, heating layer or the first heating element 7 can be set on the bottom wall and/or side wall of heater.Pass through One heating element 7 can be such that the temperature in heating container 5 increases.In order to make the temperature in heating container 5 increase faster, temperature It is kept as evenly, setting can heat fluid (for example, hot pressing is oily) in heating container 5.Heat the liquid level of fluid extremely Less will in the first casting die 9 and the second casting die 16 it is higher that be aligned.

In addition, also the second heating element can be arranged in heating fluid.Preferably, multiple second heating elements, which are dispersed in, adds In hot fluid.Thus, it is possible to more efficiently be heated to heating fluid.Second heating element can be with the bottom of heating container 5 Wall and/or side wall are connected.For example, the second heating element can be heater strip, the both ends of heater strip respectively with bottom wall and side wall phase Even or the both ends of heater strip are connected from different side walls respectively.Thereby, it is possible to conveniently and effectively add to heating fluid Heat.

Can also have certain temperature in addition, being injected by the first pressing mechanism and accommodating the fluid (hydraulic oil) in annular space Degree, the temperature is for example in the range of 100 DEG C to 200 DEG C.

In addition, as shown in Figure 1, temperature sensor 15 can also be arranged in heating container 5, so that user easily slaps Hold the temperature in heating container 5.

The packing performance of packing element 13 is accurately obtained by the way that above-mentioned apparatus 100 can be effectively, especially it is in high temperature item Packing performance under part.This is advantageous to underground operators and selects packing element appropriate when carrying out operation, to avoid by well Operation failure caused by lower packing failure.

Although by reference to preferred embodiment, invention has been described, the case where not departing from the scope of the present invention Under, various improvement can be carried out to it and can replace component therein with equivalent.Especially, as long as there is no structures to rush Prominent, items technical characteristic mentioned in the various embodiments can be combined in any way.The invention is not limited in texts Disclosed in specific embodiment, but include all technical solutions fallen within the scope of the appended claims.

Claims (10)

1. a kind of device for detecting the sealing performance of packing element comprising:
Hollow casing,
The mandrel being coaxially set in described sleeve pipe is configured with receiving annular space between described sleeve pipe and mandrel,
It is arranged in the side for accommodating annular space and closes first casting die for accommodating annular space,
It is arranged in the other side for accommodating annular space and closes second casting die for accommodating annular space, and
It is constructed to be permeable to the first pressing mechanism to pressurize into the receiving annular space,
Wherein, at least one of first casting die and second casting die can be relative to first casting die and described second Another movement in casting die.
2. the apparatus according to claim 1, which is characterized in that second casting die be fixedly connected with the mandrel and with institute The contact of bobbin seal formula is stated, first casting die is fixed relative to described sleeve pipe and is contacted with the stem seal formula,
The mandrel structure is at can be mobile towards first casting die and drive second casting die to be moved towards first casting die It is dynamic.
3. the apparatus of claim 2, which is characterized in that described device include be arranged first casting die backwards The piston cylinder of the side of second casting die, the mandrel structure extend in the piston cylinder and in the piston cylinder The piston end of the sealed contact of wall, the piston end can move in the piston cylinder.
4. device according to claim 3, which is characterized in that described device includes the second pressing mechanism, and described second adds Press mechanism is constructed to be permeable to pressurize in the piston cylinder between the piston end and first casting die to make the piston end carry on the back It is moved to first casting die.
5. device according to any one of claims 1 to 4, which is characterized in that described device further includes heating container, institute It states casing, mandrel, the first casting die and the second casting die to be in the heating container, at least part of the heating container is by protecting Adiabator is made.
6. device according to claim 5, which is characterized in that be arranged on the bottom wall and/or side wall of the heating container There is the first heating element.
7. device according to claim 5 or 6, which is characterized in that be provided with heating fluid, institute in the heating container State heating fluid liquid level in first casting die and second casting die it is higher that be aligned.
8. device according to claim 7, which is characterized in that described device further includes the in the heating fluid Two heating elements, second heating element are connected with the bottom wall of the heating container and/or side wall.
9. device according to claim 8, which is characterized in that second heating element is heater strip described in heater strip Both ends are connected from the different side walls of heating container or are connected respectively with the bottom wall of heating container and side wall respectively.
10. the device according to any one of claim 1 to 9, which is characterized in that first pressing mechanism is by institute State accommodate injection fluid in annular space and to the receiving applied pressure by annulus, the range of the temperature of the fluid at 100 DEG C to 200 DEG C It is interior.
CN201710013978.5A 2017-01-09 2017-01-09 Device for the packing performance for detecting packing element CN108287111A (en)

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CN201710013978.5A CN108287111A (en) 2017-01-09 2017-01-09 Device for the packing performance for detecting packing element

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103293062A (en) * 2013-05-07 2013-09-11 中国石油天然气股份有限公司 Test detecting tool for compression-type packer rubber sleeves
CN104749040A (en) * 2015-03-03 2015-07-01 中国石油天然气股份有限公司 Test detection device and method for high temperature packer rubber tube
CN204731109U (en) * 2015-07-06 2015-10-28 中国海洋石油总公司 The performance testing device of packing element
CN105510148A (en) * 2014-09-27 2016-04-20 中国石油化工集团公司 Device for testing packer rubber barrel contact stress at high temperature and method thereof
KR101655837B1 (en) * 2015-03-13 2016-09-08 조선대학교산학협력단 High temperature tube burst test apparatus using hydraulic pressure and burst test method using thereof
CN205861465U (en) * 2016-08-06 2017-01-04 天津统晟石油科技有限公司 Packing element high temperature high voltage resistant test fixture
WO2017152472A1 (en) * 2016-03-08 2017-09-14 中国科学院南海海洋研究所 System and method for testing thermophysical properties of rock under high pressure condition in deep sea
CN107271116A (en) * 2017-06-08 2017-10-20 西南石油大学 The axial seal pilot system and its application method of a kind of packing element

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103293062A (en) * 2013-05-07 2013-09-11 中国石油天然气股份有限公司 Test detecting tool for compression-type packer rubber sleeves
CN105510148A (en) * 2014-09-27 2016-04-20 中国石油化工集团公司 Device for testing packer rubber barrel contact stress at high temperature and method thereof
CN104749040A (en) * 2015-03-03 2015-07-01 中国石油天然气股份有限公司 Test detection device and method for high temperature packer rubber tube
KR101655837B1 (en) * 2015-03-13 2016-09-08 조선대학교산학협력단 High temperature tube burst test apparatus using hydraulic pressure and burst test method using thereof
CN204731109U (en) * 2015-07-06 2015-10-28 中国海洋石油总公司 The performance testing device of packing element
WO2017152472A1 (en) * 2016-03-08 2017-09-14 中国科学院南海海洋研究所 System and method for testing thermophysical properties of rock under high pressure condition in deep sea
CN205861465U (en) * 2016-08-06 2017-01-04 天津统晟石油科技有限公司 Packing element high temperature high voltage resistant test fixture
CN107271116A (en) * 2017-06-08 2017-10-20 西南石油大学 The axial seal pilot system and its application method of a kind of packing element

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