CN206540910U - A kind of self-healing cement mortar simulating-estimating device - Google Patents
A kind of self-healing cement mortar simulating-estimating device Download PDFInfo
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- CN206540910U CN206540910U CN201621243943.8U CN201621243943U CN206540910U CN 206540910 U CN206540910 U CN 206540910U CN 201621243943 U CN201621243943 U CN 201621243943U CN 206540910 U CN206540910 U CN 206540910U
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Abstract
The utility model provides a kind of self-healing cement mortar simulating-estimating device, including cylinder, support unit and elastic caoutchouc cylinder；The cylinder upper and lower part is threaded with top oil gas control unit and bottom oil gas control unit respectively；Provided with elastic caoutchouc cylinder in the cylinder, the elastic caoutchouc cylinder forms closing space with the top oil gas control unit and bottom oil gas control unit three；The support unit is provided with the closing space；The support unit inner hollow, and side wall is provided with some first through hole；The steel cylinder that cracks is cased with the elastic caoutchouc cylinder, and both are close to；Cementing annular space unit is constituted between the elastic caoutchouc drum outer wall and the cylinder inboard wall.A kind of self-healing cement mortar simulating-estimating device described in the utility model, cannot be only used for evaluating the simulation self-healing performance test of self-healing cement mortar microannulus, it may also be used for simulate its microcrack self-healing performance test.
Description
Technical field
The utility model belongs to oil drilling simulating-estimating device field, more particularly, to a kind of self-healing cement mortar mould
Intend evaluating apparatus.
Background technology
With the emergence of new drilling technology, the continuous of the resource such as natural gas, coal bed gas, geothermal well is taken seriously,
It is required that continuous improvement, the exploitation of the energy of deep layer and difficult mine reserves, have higher requirement to the quality of well cementation, especially with oil
Anti-gas channeling problem proposes more harsh requirement in gas well recovery process.At present, do not have an intact device both at home and abroad to comment
Valency self-healing cement mortar.Therefore be badly in need of a kind of new oil gas well cementing self-healing cement mortar of R ＆ D design, with tackle cement mortar in response to
Annular space structure problem produced by power, enables self-heal.
The content of the invention
In view of this, the utility model is directed to a kind of self-healing cement mortar simulating-estimating device, to overcome existing skill
Art defect, can real simulation oil well operating mode, evaluate the self-healing effect of self-healing cement mortar.
To reach above-mentioned purpose, what the technical solution of the utility model was realized in：
A kind of self-healing cement mortar simulating-estimating device, including cylinder, support unit and elastic caoutchouc cylinder；
The cylinder upper and lower part is threaded with top oil gas control unit and bottom oil gas control unit respectively；Institute
State provided with elastic caoutchouc cylinder in cylinder, the elastic caoutchouc cylinder is controlled with the top oil gas control unit and bottom oil gas
Unit three forms closing space；The support unit is provided with the closing space；
The top oil gas control unit and bottom are threadedly coupled respectively with lower end inside on the inside of the support unit upper end
Oil gas control unit, and three's connection；It is close to the elastic caoutchouc cylinder on the outside of the support unit upper end respectively with lower end outside；
The support unit inner hollow, and side wall is provided with some first through hole；
Spacing is left between the elastic caoutchouc cylinder side wall and support unit side wall；It is cased with the elastic caoutchouc cylinder
Crack steel cylinder, and both are close to；Cementing annular space unit is constituted between the elastic caoutchouc drum outer wall and the cylinder inboard wall.
The steel cylinder that cracks is a thin wall cylinder, can be pressed in cylinder and expand outwardly 1~5 μm, but not in the effect of cylinder external pressure
It is lower to contract.
Further, it is provided with boss at the top of the cylinder lateral wall；The boss is extended in the cylinder, and both one
Shaping；First annular filter screen and the second annular filter screen are respectively equipped with the top and bottom of the cementing annular space unit；Described
One annular filter screen is close to the bottom of the top oil gas control unit, and the first annular filter screen extends to the boss top
At the top of portion, elastic caoutchouc cylinder top and support unit；At the top of the boss, at the top of elastic caoutchouc cylinder and at the top of the support unit
Three is concordant；Second annular filter screen is close to the top of the bottom oil gas control unit, and second annular filter screen prolongs
Extend the elastic caoutchouc cylinder bottom and support unit bottom；The elastic caoutchouc cylinder bottom and the support unit bottom are flat
Together.The effect of boss is the first annular filter screen of support.
Further, the top oil gas control unit includes upper chock plug；The upper chock plug middle part threaded connection institute
Support unit is stated, the top plug head edge position screw thread is connected the cylinder；The upper chock plug is provided with the second through hole and the 3rd
Oil gas vent control valve rod and confined pressure oil-feed gas control valve bar are respectively equipped with through hole, second through hole and third through-hole；Institute
Stating bottom oil gas control unit includes lower chock plug；The lower chock plug middle part is threadedly coupled the support unit, the lower plug
Head edge position is threadedly coupled the cylinder；The lower chock plug be provided with fourth hole and fifth hole, the fourth hole and
It is interior respectively in fifth hole to control valve rod and confined pressure emptying gas control valve bar provided with oil and gas import；The first annular filter screen is close to
The bottom of the upper chock plug, second annular filter screen is close to the top of the lower chock plug.
Further, second through hole and fourth hole part are just to the cementing annular space unit；Described 3rd
Through hole and fifth hole are respectively positioned at the middle part of the upper chock plug and the middle part of lower chock plug；The third through-hole and
Five through holes inside the support unit with connecting.
Further, the upper chock plug and lower chock plug are stretched into inside the support unit, and with the support unit spiral shell
Line is connected.
Further, the upper chock plug is equipped with O-ring seal with the support unit, the threaded connection place of cylinder；Institute
State lower chock plug and be equipped with O-ring seal with the support unit, the threaded connection place of cylinder.
Further, the oil gas vent control valve rod is connected with flow monitoring device.
Further, the cylinder material is stainless steel；The support unit is support steel cylinder.
Further, the elastic caoutchouc cylinder is at the top oil gas control unit and bottom oil gas control unit
It is all provided with fluted on excircle, fastening steel loop is equipped with described two grooves.
A kind of installation operation method of self-healing cement mortar simulating-estimating device described in the utility model is as follows：
(1) it will break a seal in steel cylinder loading elastic caoutchouc cylinder, support unit is then loaded into elastic caoutchouc tin inside, and in bullet
Property rubber tube on two grooves in fixed with the sealing of lock ring steel loop；
(2) support unit and lower chock plug are screwed in support unit, junction is sealed with O-ring；
(3) lower chock plug is used with cylinder and be threadedly coupled, open screw thread on the inside of cylinder body bottom is connected with lower chock plug, and junction is used
O-ring is sealed.
(4) upper chock plug is screwed in support unit, junction is sealed with O-ring；Upper chock plug is used with cylinder and is threadedly coupled,
Cylinder upper outside opens screw thread, and junction is sealed with O-ring.
A kind of simulated scenario of self-healing cement mortar simulating-estimating device institute foundation described in the utility model：
Underground cement ring can be with the borehole wall and sleeve into stand column pile casing programme, and self-healing cement sheath once forms microannulus
Or after microcrack, when running into the medium of channelling under oil, the effect of gas-bearing formation pressure in underground can spontaneous healing, block oil gas channelling logical
Road.
A kind of evaluation cement mortar self-healing performance of self-healing cement mortar simulating-estimating device described in the utility model
Operation principle：
Cement mortar is injected to cementing annular space unit, then oil gas is filled with from confined pressure oil-feed gas control valve bar, it is single by supporting
Oil gas feeding is supplied confined pressure oil gas gap location by some first through hole on first side wall, and the steel cylinder that cracks is pressurized outside with elastic caoutchouc cylinder
Cement slurry sets are expanded to, cement sheath is formed；After after cement slurry sets formation cement sheath, stop the entrance of confined pressure oil gas, crack
Steel cylinder and elastic caoutchouc cylinder can shrink, and will form microannulus between elastic caoutchouc cylinder and cement sheath, once microannulus is formed, will
From oil and gas import control valve rod be filled with to cement sheath microannulus can make the spontaneous liquid expanded of Behavior of Hardened Cement Paste self-healing component or
Gas, the spontaneous closure microannulus of meeting is so as to reach the purpose of cement sheath self-healing after the expansion of self-healing component；Or, it is non-pressurized
Appropriate cement mortar is injected under state, after being pressurizeed again after cement slurry sets, cement sheath, which is pressurized, can produce microcrack, once shape
Into microcrack, will be filled with from oil and gas import control valve rod into cement sheath crack can make the spontaneous generation of Behavior of Hardened Cement Paste self-healing component swollen
Swollen liquid or gas, the spontaneous closure microcrack of meeting is so as to reach the purpose of cement sheath self-healing after the expansion of self-healing component.
Relative to prior art, a kind of self-healing cement mortar simulating-estimating device described in the utility model has following excellent
Gesture：
A kind of self-healing cement mortar simulating-estimating device described in the utility model, oil gas, mould are passed through to elastic caoutchouc cylinder
Intend the pressure and operating mode of underground oil gas, inject cement mortar to cementing annular space unit in the state of elastic caoutchouc cylinder expansion, treat
Cement slurry sets, then the oil gas cracked in steel loop is discharged, elastic caoutchouc cylinder shrinks, and is just produced between Behavior of Hardened Cement Paste and elastic caoutchouc cylinder
Raw microannulus, then carries out self-healing experiment.
A kind of self-healing cement mortar simulating-estimating device described in the utility model, confined pressure oil gas uses upper entering and lower leaving, leads to
Control valve rod regulation confined pressure size is crossed, to adjust the size of microannulus, or microcrack, self-healing oil gas uses bottom in and top out,
By controlling valve rod to adjust into oil and gas content (pressure limit：Not less than 0.1MPa) and flow rate (below flow 1.2m/s), not only may be used
For evaluating the simulation self-healing performance test of self-healing cement mortar microannulus, it may also be used for simulate the survey of its microcrack self-healing performance
Examination.
Brief description of the drawings
Constitute a part of accompanying drawing of the present utility model to be used for providing further understanding to of the present utility model, this practicality is new
The schematic description and description of type is used to explain the utility model, does not constitute to improper restriction of the present utility model.
In accompanying drawing：
Fig. 1 is a kind of self-healing cement mortar simulating-estimating device schematic cross-sectional view described in the utility model embodiment；
Fig. 2 is the enlarged diagram of part A in Fig. 1.
Description of reference numerals：
1- cylinders；2- support units；3- elastic caoutchoucs cylinder；4- first through hole；5- cracks steel cylinder；6- cementing annular space lists
Member；7- boss；The first annular filter screens of 8-；The annular filter screens of 9- second；The upper chock plugs of 10-；11- oil gas vents control valve rod；12- confined pressures
Oil-feed gas control valve bar；Chock plug under 13-；14- oil and gas imports control valve rod；15- confined pressure emptying gas control valve bars；16-O types are sealed
Circle；17- fastens steel loop.
Embodiment
It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the utility model can
To be mutually combined.
In description of the present utility model, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " on ", " under ",
The orientation or position relationship of the instruction such as "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom ", " interior ", " outer " are
Based on orientation shown in the drawings or position relationship, it is for only for ease of description the utility model and simplifies description, rather than indicate
Or imply that the device or element of meaning must have specific orientation, with specific azimuth configuration and operation, therefore be not understood that
For to limitation of the present utility model.In addition, term " first ", " second " etc. are only used for describing purpose, and it is not intended that indicating
Or imply relative importance or the implicit quantity for indicating indicated technical characteristic.Thus, " first ", " second " etc. are defined
Feature can express or implicitly include one or more this feature.In description of the present utility model, unless separately
It is described, " multiple " are meant that two or more.
, it is necessary to which explanation, unless otherwise clearly defined and limited, term " are pacified in description of the present utility model
Dress ", " connected ", " connection " should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integratedly
Connection；Can be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected to by intermediary,
It can be the connection of two element internals.For the ordinary skill in the art, on being understood by concrete condition
State concrete meaning of the term in the utility model.
Describe the utility model in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
As shown in Figure 1 and Figure 2, a kind of self-healing cement mortar simulating-estimating device, including cylinder 1, support unit 2 and elasticity
Rubber tube 3；
The upper and lower part of cylinder 1 is threaded with top oil gas control unit and bottom oil gas control unit respectively；
Provided with elastic caoutchouc cylinder 3 in the cylinder 1, the elastic caoutchouc cylinder 3 and the top oil gas control unit and bottom oil
Gas control unit three forms closing space；The support unit 2 is provided with the closing space；
The top oil gas control unit and bottom are threadedly coupled respectively with lower end inside on the inside of the upper end of support unit 2
Oil gas control unit, and three's connection；It is close to the elastic caoutchouc cylinder on the outside of the upper end of support unit 2 respectively with lower end outside
3；The inner hollow of support unit 2, and side wall is provided with some first through hole 4；
Spacing is left between the elastic caoutchouc 3 side walls of cylinder and the side wall of the support unit 2；In the elastic caoutchouc cylinder 3
The steel cylinder 5 that cracks is cased with, and both are close to；Cementing annular space is constituted between elastic caoutchouc 3 outer walls of cylinder and the inwall of the cylinder 1
Unit 6.
The top side wall of cylinder 1 is provided with boss 7；The boss 7 is extended in the cylinder 1, and both are integrally formed；
The top and bottom of the cementing annular space unit 6 are respectively equipped with the first annular annular filter screen 9 of filter screen 8 and second；Described first
Annular filter screen 8 is close to the bottom of the top oil gas control unit, and the first annular filter screen 8 extends to the boss 7 and pushed up
Portion, the top of elastic caoutchouc cylinder 3 and the top of support unit 2；The top of boss 7, the top of elastic caoutchouc cylinder 3 and the support unit
2 top threes are concordant；Second annular filter screen 9 is close to the top of the bottom oil gas control unit, and second annular
Filter screen 9 extends to elastic caoutchouc 3 bottoms of cylinder and the bottom of support unit 2；Elastic caoutchouc 3 bottoms of cylinder and the support list
First 2 bottoms are concordant.
The top oil gas control unit includes upper chock plug 10；The middle part of upper chock plug 10 is threadedly coupled the support
Unit 2, the upper edge screw thread of chock plug 10 is connected the cylinder 1；The upper chock plug 10 is provided with the second through hole and the 3rd
Oil gas vent control valve rod 11 and confined pressure oil-feed gas control valve bar are respectively equipped with through hole, second through hole and third through-hole
12；The bottom oil gas control unit includes lower chock plug 13；The middle part of lower chock plug 13 is threadedly coupled the support unit
2, the lower edge of chock plug 13 is threadedly coupled the cylinder 1；The lower chock plug 13 is provided with fourth hole and fifth hole,
It is interior respectively in the fourth hole and fifth hole to control valve rod 14 and confined pressure emptying gas control valve bar 15 provided with oil and gas import；Institute
The bottom that first annular filter screen 8 is close to the upper chock plug 10 is stated, second annular filter screen 9 is close to the top of the lower chock plug 13
Portion.
Second through hole and fourth hole part are just to the cementing annular space unit 6；The third through-hole and
Five through holes are respectively positioned at the middle part of the upper chock plug 10 and the middle part of lower chock plug 13；The third through-hole and the 5th leads to
The inside of support unit 2 is connected described in Kong Junyu.
The upper chock plug 10 and lower chock plug 13 are stretched into inside the support unit 2, and are connected with the screw thread of support unit 2
Connect.
The upper chock plug 10 is equipped with O-ring seal 16 with the support unit 2, the threaded connection place of cylinder 1；Under described
Chock plug 13 is equipped with O-ring seal 16 with the support unit 2, the threaded connection place of cylinder 1.
The oil gas vent control valve rod 11 is connected with flow monitoring device.
The material of cylinder 1 is stainless steel；The support unit 2 is support steel cylinder.
The elastic caoutchouc cylinder 3 is on the excircle at the top oil gas control unit and bottom oil gas control unit
Be all provided with it is fluted, be equipped with described two grooves fastening steel loop 17.
The course of work of the present embodiment：
In use, the oil gas vent first is controlled into valve rod 11, confined pressure oil-feed gas control valve bar 10, upper chock plug 10, top plug
O-ring seal 16, first annular filter screen 8 remove near first 10, from the top of cementing annular space unit 6 injection self-healing to be evaluated
Heshui mud, installs the first annular filter screen 8, upper chock plug 10 nearby O-ring seal 16, upper chock plug 10, confined pressure successively afterwards
Oil-feed gas control valve bar 10 and oil gas vent control valve rod 11；Confined pressure oil is injected at the confined pressure oil-feed gas control valve bar 12
Gas, the gap that confined pressure oil gas flow to support unit 2 between the steel cylinder 5 that cracks by some first through hole 4 makes described crack
Steel cylinder 5 and elastic caoutchouc cylinder 3 are expanded to the direction close to the cementing annular space unit 6, keep elastic caoutchouc cylinder 3 in expansion
State releases confined pressure oil gas up to cement slurry sets at confined pressure emptying gas control valve bar 15, lays down confined pressure, elastic caoutchouc cylinder
3 are shunk, and microannulus is formed between elastic caoutchouc cylinder 3 and cement sheath；Then self-healing oil gas is made from the oil and gas import control valve
Bar 14 enters annular slot, is gone out from oil gas vent control valve rod 11, carries out cement self-healing experiment.Whole process of the test
Described in flow monitoring device is measurable or record pressure and flow, uninterrupted detection, after no air pressure or liquid outflow, i.e. cement
Ring has realized self-healing function.
Preferred embodiment of the present utility model is the foregoing is only, it is all at this not to limit the utility model
Within the spirit and principle of utility model, any modification, equivalent substitution and improvements made etc. should be included in the utility model
Protection domain within.
Claims (9)
1. a kind of self-healing cement mortar simulating-estimating device, it is characterised in that：Including cylinder (1), support unit (2) and elastic rubber
Packing element (3)；
Cylinder (1) upper and lower part is threaded with top oil gas control unit and bottom oil gas control unit respectively；Institute
State in cylinder (1) provided with elastic caoutchouc cylinder (3), the elastic caoutchouc cylinder (3) and the top oil gas control unit and under
Portion oil gas control unit three forms closing space；The support unit (2) is provided with the closing space；
It is threadedly coupled the top oil gas control unit and bottom oil on the inside of support unit (2) upper end respectively with lower end inside
Gas control unit, and three's connection；It is close to the elastic caoutchouc cylinder on the outside of support unit (2) upper end respectively with lower end outside
(3)；Support unit (2) inner hollow, and side wall is provided with some first through hole (4)；
Spacing is left between described elastic caoutchouc cylinder (3) side wall and the support unit (2) side wall；The elastic caoutchouc cylinder (3)
The steel cylinder (5) that cracks inside is cased with, and both are close to；Constitute and note between elastic caoutchouc cylinder (3) outer wall and the cylinder (1) inwall
Cement sheath dummy cell (6).
2. a kind of self-healing cement mortar simulating-estimating device according to claim 1, it is characterised in that：The cylinder (1)
Top side wall is provided with boss (7)；The boss (7) is extended in the cylinder (1), and both are integrally formed；The cementing
First annular filter screen (8) and the second annular filter screen (9) are respectively equipped with the top and bottom of annular space unit (6)；It is described first annular
Filter screen (8) is close to the bottom of the top oil gas control unit, and the first annular filter screen (8) extends to the boss (7)
At the top of top, elastic caoutchouc cylinder (3) and at the top of support unit (2)；Boss (7) top, elastic caoutchouc cylinder (3) top and institute
State three at the top of support unit (2) concordant；Second annular filter screen (9) is close to the top of the bottom oil gas control unit,
And second annular filter screen (9) extends to elastic caoutchouc cylinder (3) bottom and support unit (2) bottom；The elastic rubber
Packing element (3) bottom is concordant with the support unit (2) bottom.
3. a kind of self-healing cement mortar simulating-estimating device according to claim 2, it is characterised in that：The top oil
Gas control unit includes upper chock plug (10)；Upper chock plug (10) middle part is threadedly coupled the support unit (2), it is described on
Chock plug (10) edge screw thread is connected the cylinder (1)；The upper chock plug (10) is provided with the second through hole and third through-hole, institute
State and oil gas vent control valve rod (11) and confined pressure oil-feed gas control valve bar (12) are respectively equipped with the second through hole and third through-hole；Institute
Stating bottom oil gas control unit includes lower chock plug (13)；Lower chock plug (13) middle part is threadedly coupled the support unit
(2), lower chock plug (13) edge is threadedly coupled the cylinder (1)；The lower chock plug (13) provided with fourth hole and
It is interior provided with oil and gas import control valve rod (14) and confined pressure emptying gas control respectively in fifth hole, the fourth hole and fifth hole
Valve rod (15) processed；The first annular filter screen (8) is close to the bottom of the upper chock plug (10), and second annular filter screen (9) is tight
Paste the top of the lower chock plug (13).
4. a kind of self-healing cement mortar simulating-estimating device according to claim 3, it is characterised in that：Second through hole
With fourth hole part just to the cementing annular space unit (6)；The third through-hole and fifth hole are located at described respectively
The middle part of upper chock plug (10) and the middle part of lower chock plug (13)；The third through-hole and fifth hole with the support
Connected inside unit (2).
5. a kind of self-healing cement mortar simulating-estimating device according to claim 3 or 4, it is characterised in that：The top plug
Head (10) and lower chock plug (13) stretch into the support unit (2) inside, and are threadedly coupled with the support unit (2).
6. a kind of self-healing cement mortar simulating-estimating device according to claim 5, it is characterised in that：The upper chock plug
(10) it is equipped with O-ring seal (16) with the support unit (2), the threaded connection place of cylinder (1)；The lower chock plug (13) with
The support unit (2), the threaded connection place of cylinder (1) are equipped with O-ring seal (16).
7. a kind of self-healing cement mortar simulating-estimating device according to claim 3, it is characterised in that：The oil gas vent
Control valve rod (11) is connected with flow monitoring device.
8. a kind of self-healing cement mortar simulating-estimating device according to claim 1, it is characterised in that：The cylinder (1)
Material is stainless steel；The support unit (2) is support steel cylinder.
9. a kind of self-healing cement mortar simulating-estimating device according to claim 1, it is characterised in that：The elastic caoutchouc
Cylinder (3) be all provided with the excircle at described top oil gas control unit and bottom oil gas control unit it is fluted, described two
Fastening steel loop (17) is equipped with individual groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621243943.8U CN206540910U (en) | 2016-11-15 | 2016-11-15 | A kind of self-healing cement mortar simulating-estimating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621243943.8U CN206540910U (en) | 2016-11-15 | 2016-11-15 | A kind of self-healing cement mortar simulating-estimating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206540910U true CN206540910U (en) | 2017-10-03 |
Family
ID=59937721
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621243943.8U Expired - Fee Related CN206540910U (en) | 2016-11-15 | 2016-11-15 | A kind of self-healing cement mortar simulating-estimating device |
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| Country | Link |
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| CN (1) | CN206540910U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109030350A (en) * | 2018-07-18 | 2018-12-18 | 四川三维节能建材有限公司 | A kind of detection method of the automatic wound healing concrete structure crack of water-repellent paint |
| CN109781538A (en) * | 2019-01-23 | 2019-05-21 | 西南石油大学 | The exogenous self-repair material repair ability evaluating apparatus of well-cementing cement and method |
| CN112540025A (en) * | 2019-09-23 | 2021-03-23 | 中国石油化工股份有限公司 | Testing device and method for simulating gas self-repairing performance of shaft and cement sheath |
-
2016
- 2016-11-15 CN CN201621243943.8U patent/CN206540910U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109030350A (en) * | 2018-07-18 | 2018-12-18 | 四川三维节能建材有限公司 | A kind of detection method of the automatic wound healing concrete structure crack of water-repellent paint |
| CN109781538A (en) * | 2019-01-23 | 2019-05-21 | 西南石油大学 | The exogenous self-repair material repair ability evaluating apparatus of well-cementing cement and method |
| CN109781538B (en) * | 2019-01-23 | 2021-09-28 | 西南石油大学 | Device and method for evaluating repair capability of exogenous self-repairing material of well cementation set cement |
| CN112540025A (en) * | 2019-09-23 | 2021-03-23 | 中国石油化工股份有限公司 | Testing device and method for simulating gas self-repairing performance of shaft and cement sheath |
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