CN204203007U - A kind of high temperature lower packet packing element contact stress proving installation - Google Patents

A kind of high temperature lower packet packing element contact stress proving installation Download PDF

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Publication number
CN204203007U
CN204203007U CN201420562427.6U CN201420562427U CN204203007U CN 204203007 U CN204203007 U CN 204203007U CN 201420562427 U CN201420562427 U CN 201420562427U CN 204203007 U CN204203007 U CN 204203007U
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China
Prior art keywords
temperature
packing
crossbeam
temperature cabinet
test
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CN201420562427.6U
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Chinese (zh)
Inventor
彭志刚
马明新
李国锋
徐鑫
李铭
冯德杰
刘传永
刘建
许婵婵
张建国
李硕
张磊
齐志刚
邵茹
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China Petrochemical Corp
Drilling Technology Research Institute of Sinopec Shengli Petroleum Engineering Corp
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China Petrochemical Corp
Drilling Technology Research Institute of Sinopec Shengli Petroleum Engineering Corp
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Priority to CN201420562427.6U priority Critical patent/CN204203007U/en
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Abstract

The utility model relates to a kind of high temperature lower packet packing element contact stress proving installation.It sets test temperature by high-temperature cabinet, steady load is applied by AC servo device, packing element rubber material compression deformation contacts with outer tube wall and produces stress deformation, strain data under acting force is carried outside by recording outer tube wall surface characteristics point, utilize stress data analytic system to draw the distribution of contact rule of packing element rubber and outer tube wall by Finite Element Method Extrapolation, thus analyze the temperature variant rule of packing element elastomeric material contact stress.The utility model can worst hot case under simulation well, makes the more realistic working condition of process of the test.Achieve the test of packing element contact stress, can record packing rubber sleeve surface characteristics point carry acting force outside under strain data.Structure is simple, easy to operate, reliable operation, degree of accuracy are higher.

Description

A kind of high temperature lower packet packing element contact stress proving installation
Technical field
The utility model relates to one in subsurface tool proving installation and method field for high temperature lower packet packing element contact stress proving installation.
Background technology
Packer is under the operating mode of down-hole High Temperature High Pressure, the high temperature resistant mechanical property of packing element seems particularly important, therefore to subsurface tool simulation underground working, carry out High-Temperature Strengthening test and Data Detection, not only significant to developing of subsurface tool, to the packer promoted the use of, regularly carry out sampling Detection, guarantee that it is safe and reliable, be also absolutely necessary.
The future developments such as the subsurface tool testing equipment of current domestic and international each oil field and company is all accurate towards simulated conditions, means of testing is complete, test data is complete, measuring accuracy is high.At present, the simulation test of drill and petroleum extraction tools and technology and equipment is as basis and the important component part of drill and petroleum extraction tools research in oilfield exploitation procedure.Sealing and the grappling performance testing device of building packer carry out multiple down-hole drill and petroleum extraction tools and the requisite research technique of technical study.
In a word, physical simulation experiment is only had could to obtain semipilot data that are that site test cannot obtain or that can not obtain within short-term; Also only have simulation test could greatly shorten the scientific research cycle, effectively overcome and just new product, new technology are dropped into the drawback that produced on-site well uses without any semipilot.Thus the idle operation that some can be avoided unnecessary and economic loss, make scientific payoffs have more science, reliability, practicality and economy.
Utility model content
The purpose of this utility model is exactly for prior art present situation, proposes a kind of high temperature lower packet packing element contact stress proving installation of highly effective.
Technology path of the present utility model is: because packing element contact position is at inside pipe casing, generally directly cannot test its contact force value, but contact force can make casing deformation, the size of the deform reaction of sleeve surface interior contact power and distribution situation, as long as therefore measure the distortion of sleeve surface, just inside pipe casing contact force can be extrapolated.Test temperature is set by temp controlled meter, electric heater in high-temperature cabinet heats sample, after temperature stabilization, by AC servo device, setting load is applied to packing element, packing rubber sleeve outer tube wall hoop sticking high-temperature strain plate, AC servo keeps setting stable load a period of time, measures the strain data of packing rubber sleeve outer tube wall surface characteristics point in this process, is transferred to stress data analytic system carries out analytical calculation by strain analysis instrument collection strain value.
Its concrete scheme comprises:
First, a kind of high temperature lower packet packing element contact stress proving installation comprises, test casing, packing element, high-temperature cabinet, charger, load bar, crossbeam, pressure transducer, strain analysis instrument, strain analysis computing machine and supporter; Wherein: test casing is arranged on bottom and reinforces in closed experiment thimble; Experiment thimble is arranged in high-temperature cabinet together with the packing element in it, in high-temperature cabinet, well heater is set, the outer wall of high-temperature cabinet arranges insulation material, the top of high-temperature cabinet is run through load bar, load bar connects on crossbeam above it, be connected with pressure transducer between load bar and crossbeam, crossbeam is connected with the supporter of high-temperature cabinet outside, and load bar and the packing element in experiment thimble form longitudinal extruding and coordinate; Strain analysis instrument is with multiple foil gauge, and multiple foil gauge is pasted onto on the outer wall of experiment thimble by interval, and foil gauge is connected with strain analysis instrument by high temperature resistant wire, and strain analysis instrument and strain analysis computing machine connect; Described charger is arranged between crossbeam and supporter, or be arranged between crossbeam and load bar, or to be arranged on bottom experiment thimble and bottom high-temperature cabinet between, or to be connected to bottom experiment thimble and between supporter by the support bar run through bottom high-temperature cabinet.
Such scheme also comprises: described charger is by AC servo motor and drives ball screw linear drive motor then.
High-temperature cabinet adopt thermopair as well heater, and be connected with temperature controller realize temperature automatically controlled; Have dodge gate before high-temperature cabinet casing, door limit adopts thermostable fluorine rubber seal; High-temperature cabinet is upper and lower when needing to run through load bar or support bar time, its circular hole adopts high temperature resistant asbestos yarn to seal.
Crossbeam and supporter adopt track and pulley to be connected.
The computing method of described stress data analytic system are as follows:
If sleeve surface has n test point, internal surface of sleeve pipe effect, along the acting force P having hoop direction, acts on the contact force P at arbitrary test point i place i, at P iunder independent role, the strain of each test point is respectively ε i, when P continuous distribution is on test point 1 ~ i, then the strain of arbitrary test point i place equals the strain stress sum that each point contact force causes i point, calculates this value by Finite Element Method;
If the strain of 1 to No. 15 foil gauges is followed successively by ε 1× 10 -6, ε 2× 10 -6, ε 3× 10 -6, ε 4× 10 -6... .. ε 15× 10 -6, the interior pressure of sleeve inner and each foil gauge corresponding position is designated as p respectively 1, p 2, p 3... p 15, unit is MPa, and the data matrix in order to inverse packing element and experiment thimble contact stress is set to J, and the inverse matrix of note J is J -1, and
Make { ε }=[ε 1ε 2ε 3ε 4ε 5ε 6ε 7ε 8ε 9ε 10ε 11ε 12ε 13ε 14ε 15] t
{p}=[p 1p 2p 3p 4p 5p 6p 7p 8p 9p 10p 11p 12p 13p 14p 15] T
Then { p}=J -1{ ε }
Test is recorded strain numerical value and substitute into above formula, namely can be regarded as to obtain the sleeve lining compressive stress at corresponding foil gauge place.
Principle of the present utility model is for set test temperature by high-temperature cabinet, by charger imposed load, record packing rubber sleeve outer tube wall surface characteristics point carry acting force outside under strain data, finite Element Stress computing system is utilized to draw stress, the size of strain and the regularity of distribution, and temperature variant rule, test comprises the data such as packing element strain, axial displacement, test temperature.
Advantage of the present utility model and technique effect:
(1) can worst hot case under simulation well, make the more realistic working condition of process of the test.
(2) test of packing element contact stress is achieved, can record packing rubber sleeve surface characteristics point carry acting force outside under strain data, stress data analytic system is utilized to draw stress, the size of strain and the regularity of distribution, test data comprises the strain of packing element, axial displacement, test temperature.
(3) apparatus structure of the present utility model is simple, easy to operate, reliable operation, degree of accuracy are higher, serviceable life is longer, achieve the small-size multifunction feature of rubber performance proving installation under hot conditions, hold facility scope is little, and experimentation cost is low, is suitable for laboratory experiment evaluation.
Accompanying drawing explanation
Fig. 1 is a kind of device example structure sketch of the present utility model.
In Fig. 1: 21, packing element and test casing part; 22, high-temperature cabinet; 23, charger; 24, strain analysis instrument; 25, strain analysis computing machine; 26, crossbeam; 27, pressure transducer; 28, load bar; 29, touch display.
Fig. 2 is the enlarged drawing of packing element in Fig. 1 and test casing part.
In Fig. 2: 1,2,3,4 ... 15, high temperature strain foil; 16, test casing; 17, packing element.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in detail:
Shown in Fig. 1,2, in this test unit, packing element 17 is contained in inside test casing 16.Test casing 16 is placed in high-temperature cabinet 22 li, and high-voltaghe compartment 22 is arranged on supporter inside.Test casing 16 is from the bottom to top in axial direction every 10mm sticking high-temperature strain plate (1 ... 15), for convenience of the record of data during test, be connected on strain analysis instrument 24 by high temperature wire after its numbering.Be provided with AC servo motor in charger 23 and drive ball screw, and being acted on bottom experiment thimble 16 by support bar and reinforce blind end.By load bar 28 pairs of packing element imposed loads after crossbeam 26 bottom Bonding pressure sensor 27.Test figure is connected on strain analysis computing machine 55 by data line by strain analysis instrument 24, touch display 29 is opened testing software and can start test.
Its method of testing: set test temperature by high-temperature cabinet, after test temperature is stable, logical testing software setting loading force and loading force stabilization time, start-up loading device 23 pairs of packing element imposed loads, stable load keeps 0.1 ~ 0.5min, record packing rubber sleeve surface characteristics point carry acting force outside under strain data, the test figure collected is transferred on strain analysis computing machine by strain analysis instrument, stress, the size of strain and the regularity of distribution is drawn by stress data analytic system, and temperature variant rule.

Claims (4)

1. a high temperature lower packet packing element contact stress proving installation, is characterized in that comprising test casing, packing element, high-temperature cabinet, charger, load bar, crossbeam, pressure transducer, strain analysis instrument, strain analysis computing machine and supporter; Wherein: test casing is arranged on bottom and reinforces in closed experiment thimble; Experiment thimble is arranged in high-temperature cabinet together with the packing element in it, in high-temperature cabinet, well heater is set, the outer wall of high-temperature cabinet arranges insulation material, the top of high-temperature cabinet is run through load bar, load bar connects on crossbeam above it, be connected with pressure transducer between load bar and crossbeam, crossbeam is connected with the supporter of high-temperature cabinet outside, and load bar and the packing element in experiment thimble form longitudinal extruding and coordinate; Strain analysis instrument is with multiple foil gauge, and multiple foil gauge is pasted onto on the outer wall of experiment thimble by interval, and foil gauge is connected with strain analysis instrument by high temperature resistant wire, and strain analysis instrument and strain analysis computing machine connect; Described charger is arranged between crossbeam and supporter, or be arranged between crossbeam and load bar, or to be arranged on bottom experiment thimble and bottom high-temperature cabinet between, or to be connected to bottom experiment thimble and between supporter by the support bar run through bottom high-temperature cabinet.
2. high temperature lower packet packing element contact stress proving installation according to claim 1, is characterized in that: described charger is by AC servo motor and drives ball screw linear drive motor then.
3. high temperature lower packet packing element contact stress proving installation according to claim 2, is characterized in that: high-temperature cabinet adopt thermopair as well heater, and be connected with temperature controller realize temperature automatically controlled; Have dodge gate before high-temperature cabinet casing, door limit adopts thermostable fluorine rubber seal; High-temperature cabinet is upper and lower when needing to run through load bar or support bar time, its circular hole adopts high temperature resistant asbestos yarn to seal.
4. high temperature lower packet packing element contact stress proving installation according to claim 3, is characterized in that: crossbeam and supporter adopt track and pulley to be connected.
CN201420562427.6U 2014-09-27 2014-09-27 A kind of high temperature lower packet packing element contact stress proving installation Active CN204203007U (en)

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CN201420562427.6U CN204203007U (en) 2014-09-27 2014-09-27 A kind of high temperature lower packet packing element contact stress proving installation

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

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