CN200956022Y - Cementring interfacial shear ultrasonic measuring instrument - Google Patents
Cementring interfacial shear ultrasonic measuring instrument Download PDFInfo
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- CN200956022Y CN200956022Y CN 200620133977 CN200620133977U CN200956022Y CN 200956022 Y CN200956022 Y CN 200956022Y CN 200620133977 CN200620133977 CN 200620133977 CN 200620133977 U CN200620133977 U CN 200620133977U CN 200956022 Y CN200956022 Y CN 200956022Y
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Abstract
The utility model discloses an ultrasonic tester for the interface shear of the cement sheath, which comprises a computer, an oil box and a pump. The oil box is connected with the pump. An upper plate is arranged on the upper part of the pressure vessel. The upper plate is provided with a through hole. An outer layer sleeve is arranged at the interior of the pressure vessel. An internal layer sleeve is arranged at the interior of the outer layer sleeve. The height of the internal layer sleeve is lower than the outer one. A stopcock is arranged at the lower part of the pressure vessel. The upper part of the stopcock is contacted with the lower part of the internal layer. A thrust oil pump is arranged at the lower part of the stopcock. The stopcock obtains the thrust force from the thrust oil pump. A hole is arranged at the thrust oil pump. The pressure vessel is provided with a pressurized hole. The hole of the thrust oil pump and the pressurized hole are connected with the pump by pipeline respectively. An acoustic wave tester is arranged at the interior of the internal layer sleeve, and connects to the computer by lead.The pump obtains the control signal from the computer.
Description
Technical field
The utility model relates to a kind of cementing quality and surveys experimental technique, relates to a kind of cement interface shearing in annulus supersonic ultrasonic testing instrument specifically.
Background technology
At present, casing and cementing circle generally believes that under the condition of cement-free groove, the packing performance of cement mantle depends primarily on it and sleeve pipe reaches and the consolidation strength at two interfaces of interlayer, ground (being called first interface and second contact surface).Consolidation strength is divided into fluid power consolidation strength and clipping knotting strength again.Experiment shows that the fluid power consolidation strength is big, and then the clipping knotting strength is also big.When cement mantle closely contacted with sleeve pipe, strength of cement was big, and then the fluid power consolidation strength at this interface and clipping knotting strength are also all big.Unfortunately, also nobody can derive strict relationship between this three.Main cause is, consolidation strength is not only relevant with strength of cement, also is subjected to the influence of factors such as interface roughness degree, tapering, circularity and confined pressure, and situation is quite complicated.So world-renowned road Weir Si Lunbeixie (Dowell Schlumberger) company thinks what contrast meaning the absolute value of measuring fluid power consolidation strength and clipping knotting strength under different condition does not have.Think that simultaneously the clipping knotting strength is almost irrelevant with the size of sample.
Under surface condition, owing to there is the bubble random disturbance that is difficult to eliminate, fluid power consolidation strength experimental result discreteness is too big.In view of this, the long Ji Dengren of Daqing oil field sieve (1993) has carried out clipping knotting strength experimental study to cement mantle, has obtained interface cementing strength curve over time.People such as Nahm (1996) transform the cement mantle packing performance of grout (MTC) after fixed by interface shearing consolidation strength research mud, have obtained important understanding.By above two cross-section studies as can be seen: the first, fixed engineering circle thinks that at present the clipping knotting strength is the feasible way of reflection cement mantle packing performance; The second, the relation of still unmanned research consolidation strength and acoustic logging response.Cement the well just boundary and logging community of the latter all thought vital bridge of getting in touch well cementation～well logging, and up to the present do not see the research precedent.
Though, the consolidation strength absolute value of measurement under different sleeve surface roughness, different tapering and different circularity situations do not have any value, but, under the experiment condition that guarantees same tapering and circularity, use experimentizes with a kind of sleeve pipe of surfaceness, and the relation between research cement bond intensity, confined pressure and the acoustic logging response is very significant certainly.Because it has disclosed the ability of acoustic response reflection cement mantle consolidation strength, but reflecting wave response simultaneously is for the variation tendency of cement mantle consolidation strength.This variation tendency and a large amount of data of scurrying of testing combine, and can determine corresponding logging evaluation standard.
Acoustic logging be use in the existing method and technology of checking cementing quality the most extensive, generally believe comparatively effective a kind of logging method.People such as G.M.Pardue (1962) have carried out systematic study to the relation of strength of cement and acoustic logging response under surface condition, and based on this, set up the nomogram of present widely used acoustic attenuation rate (or sound width of cloth) and cement stone compressive strength relation.The experiment of Pardue is for to lay a good foundation up to present primary cement evaluation thereafter.Now, each main oil well logging company of the world and each domestic oil field all adopt the plate of being formulated by this experimental result to carry out primary cement evaluation.This evaluation method is applicable to the cementing quality well logging that utilizes sleeve pipe slide wave class casing wave amplitude and attenuation rate, such as CBL/VDL and SBT etc.According to plate, be strength of cement with the acoustic logging conversion of signals.Recently the cementing quality well logging of releasing (CET, PET, USI and CAST etc.) that utilizes sleeve pipe reflection wave class is converted to strength of cement according to the plate of being formulated by other experiment with the reflection wave relative amplitude.Can also be converted into cementation exponent BI by the casing wave amplitude that collects.Can avoid the adverse effect of factors such as the inaccurate and light weight cement well cementation of scale with BI evaluating cementing quality.
A large amount of practices show that the packing performance of cement mantle is not only close with the cement bond strength relationship, and quite close with the packing length relation of cement mantle.In the sixties,, it is found that the minimum packing length that guarantees the cement mantle packing is relevant with casing size CS by scurrying in the experiment many times testing of Gulfian oil gas field.In using external assessment technique process, China's oil scientific and technical personnel find that cement mantle still might play the packing effect when BI＜0.8, and it is more longer to need only BI＞0.6 and minimum packing length.
But, in the prior art, do not disclose the various parameters in down-hole relation each other.For example, be not disclosed in the relation between fluid power consolidation strength, clipping knotting strength and the strength of cement of the cement mantle of maintenance under the different confined pressure conditions, relation between clipping knotting strength, strength of cement and the log response, and the log response variation after the interface shearing destruction etc.
The utility model content
The technical matters that the utility model solved provides a kind of cement interface shearing in annulus supersonic ultrasonic testing instrument, by measuring cement stone compressive strength, cement mantle interface cementing strength and corresponding acoustic logging response under different curing and maintenance pressure condition, study the relation between cement stone compressive strength under the different curing conditions, cement mantle interface cementing strength and the acoustic logging response.
Technical scheme is as follows:
The cement interface shearing in annulus supersonic ultrasonic testing instrument comprises computing machine, fuel tank, pump, and described fuel tank is connected with pump, is provided with loam cake on the top of pressure vessel, and described loam cake is provided with the loam cake through hole; The inside of described pressure vessel is provided with outer layer sleeve, is provided with inner layer sleeve in the inside of described outer layer sleeve, and the height of described inner layer sleeve is lower than described outer layer sleeve; The bottom of described pressure vessel is provided with piston, and the top of piston and the bottom of inner layer sleeve contact, and described lower part of piston is provided with push action cylinder, and described piston obtains thrust upwards by push action cylinder; Described push action cylinder is provided with the push action cylinder hole, by pipeline the push action cylinder hole is connected with pump; Described pressure vessel is provided with the pressurization hole, by pipeline described pressurization hole is connected with pump; The inside of described inner layer sleeve is provided with the acoustic measurement instrument, and described acoustic measurement instrument is connected with described computing machine by circuit, and described pump obtains control signal by computing machine.
Preferably, the bottom of described pressure vessel is provided with drain hole.
Preferably, be provided with bursting disk, explosion when described bursting disk surpasses set pressure in the bottom of described drain hole.
Preferably, the top of described outer layer sleeve and the bottom of described loam cake contact, and described outer layer sleeve is provided with through hole.
Preferably, the outer setting of described pressure vessel has protective cover.
Preferably, described pressure vessel is connected by screw thread with loam cake, and is provided with O-ring seal between pressure vessel and loam cake.
Technique effect is as follows:
For given water cement ratio and different curing times, by measuring cement stone compressive strength, cement mantle interface cementing strength and corresponding acoustic logging response under different curing and maintenance pressure condition, can study the relation between cement stone compressive strength under the different curing conditions, cement mantle interface cementing strength and the acoustic logging response.
Description of drawings
Fig. 1 is the structural representation of cement interface shearing in annulus supersonic ultrasonic testing instrument.
Embodiment
As shown in Figure 1, the preferred embodiment of cement interface shearing in annulus supersonic ultrasonic testing instrument comprises fuel tank 10, oil pump 8, and fuel tank 10 and oil pump 8 are connected by pipeline.Be provided with loam cake 3 on the top of pressure vessel 11, loam cake 3 is provided with loam cake through hole 15.The inside of pressure vessel 11 is provided with outer layer sleeve 2, is provided with inner layer sleeve 1 in the inside of outer layer sleeve 2, and the height of inner layer sleeve 1 is lower than outer layer sleeve 2.The bottom of pressure vessel 11 is provided with piston 7, and the bottom of the top of piston 7 and inner layer sleeve 1 contacts, and the bottom of piston 7 is provided with push action cylinder 6, and piston obtains thrust upwards by push action cylinder 6.Push action cylinder 6 is provided with push action cylinder hole 14 at side, by pipeline this push action cylinder hole 14 is connected with oil pump 8.Pressure vessel 11 is provided with pressurization hole 12 on the top of sidewall, be connected with oil pump 8 by the pipeline hole 12 of should pressurizeing.The inside of inner layer sleeve 1 is provided with acoustic measurement instrument 4, and acoustic measurement instrument 4 is connected with computing machine 9 by circuit, and oil pump 8 obtains control signal by computing machine 9.
Actual CBL and VDL measure spacing and are respectively 3 feet (914.4mm) and 5 feet (1524.0mm), and this is too big for test unit.Even in actual source apart from and the ratio of experiment spacing be that 2: 1 ratio is dwindled the experiment spacing, CBL measures spacing and also wants 457.2mm, adds the additional space that the transducer two ends must be considered, at least 640mm must be arranged in the container.For temperature, the pressure condition of experimental study design, it is too high building inner so big its price of pressure vessel.In order to solve this contradiction, take the single-emission and double-receiving sonic system to measure the way of acoustic attenuation rate.
There is shelves difference problem in the acquisition precision of sound wave amplitude measurement.But attenuation rate is measured the problem that can avoid sound wave amplitude measurement shelves difference.As long as the amplitude measurement precision of nearly waveform and waveform far away is enough high, and at same shelves collection and display waveform, the precision that attenuation rate is measured is just enough high.The short space R1 that the restriction of the internal tank size that is stressed, the inside of inner layer sleeve 1 are provided with acoustic measurement instrument 4 is designed to 140mm, and long space R2 is 260mm.
For regulate or simulated pressure container 11 in the temperature of grout 5, in pressure vessel 11, be provided with heating plate, utilize heating plate that fluid and grouts in the pressure vessel 11 are heated.
It is good again to seal, and also has pressure leakage inevitably.As time goes on, the pressure in the pressure vessel 11 also can descend gradually.In addition, because the excessive phenomenon of 11 pressure in the pressure vessel often appears in the hysteresis quality and the inertia of temperature transfer in the process of heating.So it is very necessary on the device stable hydraulic system being installed.When hydraulic coupling descended 100psi again on target maintenance pressure-based, the automatic primer fluid press pump pressurization of program control system was added to till the target maintenance pressure always; When hydraulic coupling rose 100psi again on target maintenance pressure-based, program control system started the electromagnetic valve pressure release automatically, let out till the target maintenance pressure always.
Under " consolidation strength test " pattern of system, oil pump 8 turns to and promotes to move on the piston 7, and system's maximum thrust can reach 80 tons.
Piston 7 inlets, pressurization hole 12 and drain hole 13 all utilize O-ring seal to seal, and loam cake 3 utilizes screw thread and O-ring seal to seal.
Shielding cover prevents that in the outside of pressure vessel 11 fluid from directly releasing from pressure vessel 11, when the hydraulic coupling in the pressure vessel 11 was higher than experiment setting pressure value 100psi, electromagnetic valve was opened drain hole 13 automatically and carried out pressure release.
The important technological parameters of this preferred embodiment is as follows:
1, high workload hydraulic coupling: 5000psi (35Mpa, or 350atm.);
2, maximum operating temperature: 80 ℃;
3, attenuation rate is measured spacing: 120mm;
4, piston maximum thrust: 80000kg;
5, cement conservation phase temperature fluctuation: ± 2 ℃;
6, cement conservation phase hydraulic pressure fluctuates: ± 100psi (± 0.69Mpa, or ± 6.9atm.);
7, interface shear strength testing period hydraulic pressure fluctuates: ± 100psi (± 0.69Mpa, or ± 6.9atm.);
8, the maximum vertical temperature difference in the pressure vessel: ± 2 ℃;
9, the highest heating rate in the pressure vessel: 1.5 ℃/min.;
10, clipping knotting strength Measuring Time: 10sec.～2min.;
11, design maximum interface shear strength: 1000psi (7Mpa, or 70atm.);
12, transmitting transducer frequency (in clear water): 40kHz;
13, inner layer sleeve external diameter (OD): 2-7/8 " (73mm);
14, inner layer sleeve internal diameter (ID): 57.4mm;
15, inner layer sleeve wall thickness: 0.3079 " (7.8mm);
16, inner layer sleeve length: 380mm;
17, outer layer sleeve external diameter (OD): 5 " (127mm);
18, outer layer sleeve length: 400mm;
19, the specified bearing pressure of bursting disk: 6000psi (42Mpa, or 420atm.)
20, hydraulic coupling: 8000psi (56.2Mpa, or 562atm.) in the container during system cut-off;
21, the temperature-time sampling rate of cement conservation phase: 1 time/sec.;
22, the pressure time sampling rate of cement conservation phase: 1 time/sec.;
23, interface shear strength testing period thrust time-sampling rate: 0.055 time/sec..
Cement interface clipping knotting strength and waterpower consolidation strength have equivalent action, all can be used to reflect the bond of cement and sleeve pipe.Because the CBL well logging utilizes the bonding quality that the most responsive casing wave of interface shear strength is detected cement and sleeve pipe, thereby the relation between research CBL log response and the clipping knotting strength is highly significant.
The clipping knotting strength equals the ratio of peak value thrust and bushing outer surface (being sleeve pipe-cement mantle contact area).
Grout under given temperature and pressure (well depth of simulate given) condition after maintenance a period of time between inner layer sleeve 1 and the outer layer sleeve 2, fixed outer layer sleeve pipe 2, apply a thrust that makes progress with the piston 7 that is positioned at inner layer sleeve 1 bottom to inner layer sleeve 1, measure cement clipping knotting strength with this.Because the exterior surface area of inner layer sleeve 1 is more much smaller than the inner surface area of outer layer sleeve 2, thrust must make inner layer sleeve 1 make shear displacemant and not destroy gluing between cement mantle and the outer layer sleeve 2.
Claims (6)
1, a kind of cement interface shearing in annulus supersonic ultrasonic testing instrument comprises computing machine, fuel tank, pump, and described fuel tank is connected with pump, it is characterized in that, is provided with loam cake on the top of pressure vessel, and described loam cake is provided with the loam cake through hole; The inside of described pressure vessel is provided with outer layer sleeve, is provided with inner layer sleeve in the inside of described outer layer sleeve, and the height of described inner layer sleeve is lower than described outer layer sleeve; The bottom of described pressure vessel is provided with piston, and the top of piston and the bottom of inner layer sleeve contact, and described lower part of piston is provided with push action cylinder, and described piston obtains thrust upwards by push action cylinder; Described push action cylinder is provided with the push action cylinder hole, by pipeline the push action cylinder hole is connected with pump; Described pressure vessel is provided with the pressurization hole, by pipeline described pressurization hole is connected with pump; The inside of described inner layer sleeve is provided with the acoustic measurement instrument, and described acoustic measurement instrument is connected with described computing machine by circuit, and described pump obtains control signal by computing machine.
2, according to the described cement interface shearing in annulus supersonic ultrasonic testing instrument of claim 1, it is characterized in that the bottom of described pressure vessel is provided with drain hole.
3, according to the described cement interface shearing in annulus supersonic ultrasonic testing instrument of claim 2, it is characterized in that, be provided with bursting disk, explosion when described bursting disk surpasses set pressure in the bottom of described drain hole.
According to the described cement interface shearing in annulus supersonic ultrasonic testing instrument of claim 1, it is characterized in that 4, the top of described outer layer sleeve and the bottom of described loam cake contact, described outer layer sleeve is provided with through hole.
5, according to the described cement interface shearing in annulus supersonic ultrasonic testing instrument of claim 1, it is characterized in that the outer setting of described pressure vessel has protective cover.
6, according to the described cement interface shearing in annulus supersonic ultrasonic testing instrument of claim 1, it is characterized in that described pressure vessel is connected by screw thread with loam cake, and between pressure vessel and loam cake, be provided with O-ring seal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620133977 CN200956022Y (en) | 2006-09-30 | 2006-09-30 | Cementring interfacial shear ultrasonic measuring instrument |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 200620133977 CN200956022Y (en) | 2006-09-30 | 2006-09-30 | Cementring interfacial shear ultrasonic measuring instrument |
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Cited By (12)
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| CN102979505A (en) * | 2012-12-06 | 2013-03-20 | 中国海洋石油总公司 | Well cementation cement sheath performance simulation experiment device and experiment method |
| CN103512806A (en) * | 2013-09-18 | 2014-01-15 | 华侨大学 | Novel test device and method for safety performance of concrete barrel shells |
| CN103512807A (en) * | 2013-09-18 | 2014-01-15 | 华侨大学 | Novel inner pressure limit test device and method for concrete hemispherical shell |
| CN104345088A (en) * | 2013-08-07 | 2015-02-11 | 中国石油天然气股份有限公司 | Method for evaluating cementing quality of two interfaces of well cementation indoors by utilizing ultrasonic waves |
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| CN105352670A (en) * | 2014-08-22 | 2016-02-24 | 中国石油化工股份有限公司 | Sealing evaluation system of cementing cement sheath of oil and gas well |
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| CN111335874A (en) * | 2020-03-20 | 2020-06-26 | 中国石油大学(北京) | Oil-gas well cementing cement packing capacity detection device and detection method thereof |
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| CN115419393A (en) * | 2022-05-13 | 2022-12-02 | 中海石油(中国)有限公司海南分公司 | Plate method for evaluating interlayer packing performance of cement sheath |
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2006
- 2006-09-30 CN CN 200620133977 patent/CN200956022Y/en not_active Expired - Fee Related
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102979505A (en) * | 2012-12-06 | 2013-03-20 | 中国海洋石油总公司 | Well cementation cement sheath performance simulation experiment device and experiment method |
| CN102979505B (en) * | 2012-12-06 | 2015-04-29 | 中国海洋石油总公司 | Well cementation cement sheath performance simulation experiment device and experiment method |
| CN104345088A (en) * | 2013-08-07 | 2015-02-11 | 中国石油天然气股份有限公司 | Method for evaluating cementing quality of two interfaces of well cementation indoors by utilizing ultrasonic waves |
| CN103512806A (en) * | 2013-09-18 | 2014-01-15 | 华侨大学 | Novel test device and method for safety performance of concrete barrel shells |
| CN103512807A (en) * | 2013-09-18 | 2014-01-15 | 华侨大学 | Novel inner pressure limit test device and method for concrete hemispherical shell |
| CN103512806B (en) * | 2013-09-18 | 2016-06-29 | 华侨大学 | A kind of novel test method of concrete circular barrel shell security performance |
| CN103512807B (en) * | 2013-09-18 | 2016-07-06 | 华侨大学 | A kind of novel limit internal pressure force test method of concrete hemispherical Shell |
| CN105352670B (en) * | 2014-08-22 | 2019-01-01 | 中国石油化工股份有限公司 | A kind of oil gas well cementing operation cement sheath leakproofness evaluation system |
| CN105352670A (en) * | 2014-08-22 | 2016-02-24 | 中国石油化工股份有限公司 | Sealing evaluation system of cementing cement sheath of oil and gas well |
| CN104502453A (en) * | 2014-12-17 | 2015-04-08 | 河南理工大学 | Longitudinal wave test device of gas-containing coal rock test sample |
| CN110987611A (en) * | 2019-10-21 | 2020-04-10 | 武汉大学 | Method for nondestructively measuring active and passive restraint force of FRP (fiber reinforced Plastic) restraint concrete column based on ultrasonic waves |
| CN111006946A (en) * | 2019-10-21 | 2020-04-14 | 武汉大学 | Method for ultrasonic nondestructive detection of nonuniform sleeve restraining force of square steel tube concrete column |
| CN110987611B (en) * | 2019-10-21 | 2020-11-17 | 武汉大学 | Method for nondestructively measuring active and passive restraint force of FRP (fiber reinforced Plastic) restraint concrete column based on ultrasonic waves |
| CN111335874A (en) * | 2020-03-20 | 2020-06-26 | 中国石油大学(北京) | Oil-gas well cementing cement packing capacity detection device and detection method thereof |
| CN111335874B (en) * | 2020-03-20 | 2021-08-13 | 中国石油大学(北京) | Oil-gas well cementing cement packing capacity detection device and detection method thereof |
| CN111650274A (en) * | 2020-05-28 | 2020-09-11 | 武汉理工大学 | Test device for simulating and evaluating coral reef sand accelerated cementation |
| CN114624332A (en) * | 2020-12-10 | 2022-06-14 | 中国石油化工股份有限公司 | Ultrasonic measuring device, system and method for cement slurry evolution |
| CN115419393A (en) * | 2022-05-13 | 2022-12-02 | 中海石油(中国)有限公司海南分公司 | Plate method for evaluating interlayer packing performance of cement sheath |
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| CF01 | Termination of patent right due to non-payment of annual fee |
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