CN208830993U - High temperature and pressure well logging indoor simulation device - Google Patents
High temperature and pressure well logging indoor simulation device Download PDFInfo
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- CN208830993U CN208830993U CN201821201126.5U CN201821201126U CN208830993U CN 208830993 U CN208830993 U CN 208830993U CN 201821201126 U CN201821201126 U CN 201821201126U CN 208830993 U CN208830993 U CN 208830993U
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Abstract
The utility model embodiment discloses a kind of high temperature and pressure well logging indoor simulation device, comprising: test kettle comprising autoclave body, sealing kettle cover and model component；Measuring probe comprising feeler lever, multiple normal probes and multiple angle probes, feeler lever one end pass through sealing kettle cover, be inserted into casing, normal probe and angle probe are connect with feeler lever side wall, are arranged in casing；Heater is abutted with autoclave body outer wall；Pressurizing device comprising press machine and forcing pipe.The utility model can simulate cement sheath, and there is gap in a cementing, interface, gap occurs in second interface and four kinds of situations of free pipe completely, and by filling water, oil in sub- cavity and gap or being not filled with medium, to simulate in free pipe full of these three situations of water, oil or gas medium, the sound width curve graph obtained under different situations is simulated by these, and compared with the sound width curve graph obtained during practical logging, to understand the cementing situation of well cementation.
Description
Technical field
The utility model relates to logging technique field more particularly to a kind of high temperature and pressure well logging indoor simulation devices.
Background technique
The main purpose of oil well cementing is packing oil, gas and water layer, and protection produces layer and Reinforcing Shaft.Well cementation rear sleeve-
The adhesive bond that cement sheath-stratum is formed ensures well wellbore integrality as well cementation barrier.But in the actual production process,
Well cementation barrier temperature under long-term working condition constantly changes, while being acted on by various load, and part well will appear cement
The problems such as ring seal failure causes well head annular space with pressure, and stratum inter-layer fluid is mutually altered leads to barrier failure of cementing the well, seriously affects oil
The service life of well, or even cause major accident.Therefore, for the research of wellbore integrity, be conducive to we have found that solid
Well quality there are the problem of and improved, and existing desk research concentrate on downhole temperature, pressure and it is anti-alter intensity effect,
Wellbore integrity is either detected by fluid flow, although also achieving high temperature and high pressure environment test, is actually used as one
It kind tests and to alter device, be typically only capable to judge that bonding quality quality, interface, can not be between the generations of accurate judgement interface with the presence or absence of gap
Gap position, while the concrete condition of the media such as interfacial gap contained oil, gas and water can not be differentiated.
Utility model content
The purpose of the utility model is to overcome above-mentioned technical deficiencies, propose a kind of high temperature and pressure well logging indoor simulation dress
It sets, solution can only judge that bonding quality quality, interface, can not the generations of accurate judgement interface with the presence or absence of gap in the prior art
Gap position, while the technical issues of the media such as interfacial gap contained oil, gas and water can not be differentiated.
In order to reach above-mentioned technical purpose, the utility model embodiment provides a kind of high temperature and pressure well logging indoor simulation dress
It sets, high temperature and pressure well logging indoor simulation device includes:
Test kettle comprising autoclave body, sealing kettle cover and model component, autoclave body upper end opening are detachable with sealing kettle cover
Connection forms a measurement chamber, and model component, which is built in, measures intracavitary, lower end and autoclave body bottom surface airtight connection, model component packet
The simulated formation for including casing and being socketed on outside casing, forms a cement chamber between simulated formation and casing, cement chamber includes four
A sub- cavity, the first sub- cavity, the second sub- cavity, the sub- cavity of third and the 4th sub- cavity, which are sequentially connected, forms one around casing
Annular, at least one sub- cavity is interior to be filled with cement；
Measuring probe comprising feeler lever, multiple normal probes and multiple angle probes, feeler lever one end pass through sealing kettle cover, insert
Enter into casing, normal probe and angle probe are connect with feeler lever side wall, are arranged in casing；
Heater is abutted with autoclave body outer wall；
Pressurizing device comprising press machine and forcing pipe, forcing pipe one end are connected to press machine, other end connection measurement
Chamber.
Compared with prior art, the room the utility model has the following beneficial effects: high temperature and pressure of the utility model is logged well
Interior simulator can simulate cement sheath, and there is gap in a cementing, interface, gap occurs in second interface and free pipe four completely
Kind situation, and by filling water, oil in sub- cavity and gap or being not filled with medium, it is full of to simulate in free pipe
These three situations of water, oil or gas medium simulate the sound width curve graph obtained under different situations, and and practical logging by these
The sound width curve graph obtained in the process compares, to understand the cementing situation of well cementation.
Detailed description of the invention
Fig. 1 is the connection block diagram of high temperature and pressure well logging indoor simulation device provided by the utility model；
Fig. 2 is the cross-sectional view of test kettle in Fig. 1；
Fig. 3 is the top view of model component in Fig. 2；
Fig. 4 is the flow diagram of the test method of high temperature and pressure well logging indoor simulation device；
Fig. 5 is the sound width curve graph of different annular clearances and well cementation bonding quality；
Fig. 6 be the water of the first model component in Fig. 4, gas, oil medium sound width curve graph；
Fig. 7 be the water of the second model component in Fig. 4, gas, oil medium sound width curve graph；
Fig. 8 be the water of third model component in Fig. 4, gas, oil medium sound width curve graph.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe.
It is the connection frame of high temperature and pressure well logging indoor simulation device provided by the utility model to Fig. 3, Fig. 1 referring to Figure 1
Figure；Fig. 2 is the cross-sectional view of test kettle in Fig. 1；Fig. 3 is the top view of model component in Fig. 2.
High temperature and pressure well logging indoor simulation device includes test kettle 1, measuring probe 2, heater 3, pressurizing device 4, sound wave
Convert switch 5, data collector 6, sound wave processor 7, phonodeik 8, thermometer 31 and pressure gauge 41.
Test kettle 1 includes autoclave body 11, sealing kettle cover 12, model component 13 and rotation scale 14.It opens 11 upper end of autoclave body
Mouthful, which is detachably connected with sealing kettle cover 12, forms a measurement chamber.Sealing is provided between autoclave body 11 and sealing kettle cover 12
Cushion rubber, to guarantee to measure the leakproofness of chamber.A mounting hole is offered on sealing kettle cover 12, rotation scale 14 is embedded in mounting hole
It is interior.It is intracavitary that model component 13 is built in measurement, lower end and 11 bottom surface airtight connection of autoclave body, model component 13 include casing 131,
The simulated formation 133 being socketed on outside casing 131 forms a cement chamber 132 between simulated formation 133 and casing 131.Cement chamber
132 include four sub- cavitys, and four sub- cavitys are 90 ° of sector structures.First sub- cavity 1321, the second sub- cavity 1322,
Three sub- cavitys 1323 and the 4th sub- cavity 1324 are sequentially connected the cement chamber 132 that annular is formed around casing 131, at least one
Cement is filled in sub- cavity.
Measuring probe 2 includes feeler lever 21, multiple normal probes 22 and multiple angle probes 23.21 one end of feeler lever is inserted into casing
In 131, the other end is connect with rotation scale 14, and rotation scale 14 can drive measuring probe 2 to rotate, and is used for different directions
Measurement.Normal probe 22 and angle probe 23 are connect with 21 side wall of feeler lever, are also arranged in casing 131.Normal probe 22 and tiltedly spy
First 23 independent can be emitted and be received, i.e., each probe all can serve as transmitting probe and also can be used as receiving transducer.
Normal probe 22 can be used for single-shot list receipts, adjacent transmission and receive or be spaced transmitting and receive, which can be over the ground
Layer different height position is tested.Angle probe 23 be unable to single-shot list receipts, can only adjacent transmission and receive or interval transmitting with
It receives.Normal probe and angle probe test two different waveforms and reflection case respectively, to judge formation cementation situation, survey simultaneously
Amount probe 2 is connected in rotation scale 14, and angle can be freely rotated, it can the boundary on test cement components different directions
The cementing situation in face can search the cementing weak spot of cement in cement chamber 132, and sentence after waveform acquisition and analysis
(oil, gas and water) medium situation contained by disconnected interface weakness out.
Heater 3 is abutted with 11 outer wall of autoclave body, for heating to test kettle 1, to simulate hot conditions.Heater 3 can be with
Using different heating devices such as electric heater unit, oil bath heating device, electromagnetic heaters.One is additionally provided on autoclave body 11
The thermometer 31 of connection measurement chamber, measures intracavitary temperature for detecting, and heater 3 is instructed to maintain rule for cavity temperature is measured
Determine range.
Pressurizing device 4 includes press machine and forcing pipe, and forcing pipe one end is connected to press machine, other end connection measurement chamber.
Pressurizing device 4 is used to give measurement chamber pressurization, carrys out simulated high-pressure condition.The pressure of a connection measurement chamber is additionally provided on autoclave body 11
Meter 41 measures intracavitary pressure for detecting, instructs pressurizing device 4 that will measure intracavitary pressure and maintain prescribed limit.
Sound wave conversion switch 5, data collector 6, sound wave processor 7 and phonodeik 8 are sequentially connected, sound wave conversion
For switch 5 by rotation scale 14 and measuring probe 2, the data that measuring probe 2 measures pass sequentially through data collector 6, sound
Wave processor 7, phonodeik 8 and secondary computer are handled, and sound width curve graph is obtained.
Fig. 4 is referred to, Fig. 4 is the flow diagram of the test method of high temperature and pressure well logging indoor simulation device.
The high temperature and pressure log well indoor simulation device test method the following steps are included:
S1, the first model component of production, filling concrete in the first sub- cavity and the sub- cavity of third, and with casing and
Simulated formation is completely cementing, and by the first model component lower end and test kettle bottom surface airtight connection, normal temperature and pressure conserves Hou Ning
48h。
S2, it is filled the water in casing and between the first model component and autoclave body, water filling, the 4th sub- cavity in the second sub- cavity
Interior oiling, then installation sealing kettle cover and measuring probe, control heater and press machine, are warming up to so that measurement is intracavitary
140~160 DEG C, 45~55MPa of pressure.Preferably, temperature target is 150 DEG C, and pressure target value is 50MPa.To temperature pressure
After power rises to target value, measuring probe issues acoustic signals and receives the acoustic signals being reflected back, and will reflect back into the sound wave come
Signal is successively transferred to data collector, sound wave processor and phonodeik, obtain the first model component aqueous medium and
The sound width curve graph of oil medium；
S3, the second sub- intracorporal water of chamber is extracted out, then installation sealing kettle cover and measuring probe, obtain according to S2 method
The sound width curve graph of the gas medium of first model component.
S4, the second model component of production, filling concrete in the first sub- cavity, the second sub- cavity and the sub- cavity of third,
Cement and casing and simulated formation are completely cementing in first sub- cavity, in the second sub- cavity between cement and casing setting first
Gap, completely cementing with simulated formation, the second gap is arranged in cement and casing in third cavity, completely cementing with simulated formation, will
Second model component lower end and test kettle bottom surface airtight connection, normal temperature and pressure conserve Hou Ning 48h, in the present embodiment, first
Gap is 1mm, and the second gap is 3mm.
S5, it fills the water, is filled the water in the 4th sub- cavity, according to the side S2 in casing and between the second model component and autoclave body
Method obtains the sound width curve graph of the aqueous medium of the second model component, then extracts water in the 4th sub- cavity out, obtains according to S2 method
The sound width curve graph of the gas medium of the second model component, then the oiling in the 4th sub- cavity are obtained, obtains the second mould according to S2 method
The sound width curve graph of the oil medium of type component.
S6, production third model component, filling concrete in the first sub- cavity, the second sub- cavity and the sub- cavity of third,
Cement and casing and simulated formation are completely cementing in first sub- cavity, cement and simulated formation setting first in the second sub- cavity
Gap, completely cementing with casing, the second gap is arranged in cement and simulated formation in third cavity, completely cementing with casing, by the
Two model component lower ends and test kettle bottom surface airtight connection, normal temperature and pressure conserve Hou Ning 48h.
S7, it fills the water, is filled the water in the 4th sub- cavity, according to the side S2 in casing and between third model component and autoclave body
Method obtains the sound width curve graph of the aqueous medium of third model component, then extracts water in the 4th sub- cavity out, obtains according to S2 method
The sound width curve graph of the gas medium of third model component, then the oiling in the 4th sub- cavity are obtained, obtains third mould according to S2 method
The sound width curve graph of the oil medium of type component.
In the present embodiment, 11 height of autoclave body is 1200mm, and 11 internal diameter of autoclave body is 600mm, outer diameter 750mm, test kettle 1
Designing maximum temperature is 200 DEG C, maximum pressure 70MPa.131 outer diameter of casing is 139.7mm, internal diameter 127.6mm, simulation ground
133 diameter of layer are 400mm, internal diameter 215.9mm, are highly 1100mm.Model component 13 simulate casing 131, cement sheath with
And stratum 133 is formed by one, second interface, there is gap to cement sheath in a cementing, interface, gap occurs in second interface and oneself completely
By four kinds of cementing examples of casing.
In the present embodiment, there is gap to production cement sheath in a cementing, interface, gap occurs in second interface and freedom completely
Casing generally uses following method: free pipe, and the sub- cavity both ends are isolated using two partitions, joints cement slurry
When, this sub- cavity does not pour, as free pipe；One interfacial gap smears one layer in 131 outer wall of casing of selected sub- cavity
Slope soil paste forms thin film after slope soil paste is dry, then joints cement again, and slope soil film can be dissolved in water under long period of soaking in water
In, so slope soil film is dissolved in water in experiment, gap is formed, the size in gap is controlled by control slope soil film thickness；Two boundaries
The production method in face gap is similar to an interface, i.e., slope soil paste is smeared on the inner wall of the simulated formation 133 of selected sub- cavity；
Completely cementing is according to common mode joints cement.
5 normal probes 22 and 3 angle probes 23 are provided on feeler lever 21, two neighboring normal probe spacing is 170mm, phase
The spacing of adjacent two angle probes 23 is respectively 340mm and 170mm.When carry out sound width is tested, selecting two spacing is 340mm's
Normal probe 22, propagation rate of the sound wave in casing 131 (material is steel) are 5400m/s, and propagation rate in water is
1450m/s, propagation rate in the oil are 1295m/s, and the propagation rate in cement sheath is 2650m/s, simulated formation 133
Propagation rate is 3800m/s, and aerial propagation rate is 331m/s.According to sound wave principle of reflection, inner layer sleeve wave is from hair
Penetrate the time that probe propagates to receiving transducer are as follows:Wherein diFor casing inner diameter, VtAnd VfIt is intracorporal with stream in casing
Acoustic wave propagation velocity, L are the distance between probes, and outer layer jacket tube wave travels to the time of receiving transducer from transmitting probeWherein a is probe outer wall to the distance between internal surface of sleeve pipe, d0For the internal diameter of outer layer sleeve, Vc is cement
Interior acoustic wave propagation velocity.Therefore, the acoustic signals sequence being sequentially received are as follows: casing wave, cement sheath wave, formation wave, direct wave.
When casing wave can be calculated then about in 106 microseconds in we, direct wave is then in 234 microseconds.
The sound width curve negotiating DAP transient signal test analysis software of test is analyzed, such as attached drawing 5, Fig. 5 is different
The sound width curve graph of annular clearance and well cementation bonding quality.Fig. 5 from top to bottom, respectively free pipe, an interfacial gap, two boundaries
Face gap and completely cementing sound width curve graph, window when two sound waves in figure obtain the first interface cement of reflection in the window of the left side
Cementing acoustic signals, interval transit time value is in the section 106us~170us；Reflect second contact surface cement gel in right-hand quater to obtain
The acoustic signals of knot, interval transit time value is in the section 170us~234us.Judge the first interface agglutination situation, knows referring to the first interface
Other window, when such as completely cementing, sound width amplitude very little, as soon as and interface when there is crack, sound width amplitude will increase, and crack is wide
It is higher to spend more large amplitude, amplitude is maximum when free pipe.Similarly, judge the cementing situation of second contact surface, identified referring to second contact surface
Window, amplitude is minimum when completely cementing, and amplitude is maximum when free pipe.
Refer to Fig. 6 to Fig. 8, Fig. 6 be the water of the first model component in Fig. 4, gas, oil medium sound width curve graph；Fig. 7 is
The water of second model component in Fig. 4, gas, oil medium sound width curve graph；Fig. 8 is the water of third model component, gas, oil in Fig. 4
The sound width curve graph of medium.
Since the acoustic speed and density of water, oil, gas are different from, their speed and density lower than casing, cement and
Stratum.Sound impedance is also different, and (acoustical impedance value is respectively as follows: casing 40500g/cm2S, cement 5724g/cm2S, stratum 8740g/
cm2S, water 1450g/cm2S, oily 1036g/cm2S, air 99g/cm2S), solid acoustic impedance is greater than fluid acoustic impedance.If
It is that solid stream interface i.e. solid is in contact with fluid, is differentiated according to acoustic impedance size, Gu stream interface coupling is bad, when sound wave is in solid
When middle propagation, most of acoustic wave energy is propagated in solids, and few part is propagated in a fluid.Water is coupled with solid in contrast
It is got well than oil, gas.When bad for interface cementing, casing wave range value is small when interface filled media is water, and (acoustic amplitude is
136~140mv)；Casing wave range value and water are close to (acoustic amplitude is 153~160mv), and bigger when interface filled media is oil
Yu Shui；When interface filled media is gas, casing wave range value is maximum (acoustic amplitude is 203~290mv).
Implement the utility model embodiment, has the following beneficial effects: the indoor mould of high temperature and pressure well logging of the utility model
Quasi- device can simulate cement sheath, and there is gap in a cementing, interface, gap occurs in second interface and four kinds of feelings of free pipe completely
Condition, and by filling water, oil in sub- cavity and gap or being not filled with medium, come simulate in free pipe full of water,
Oil or gas medium these three situations simulate the sound width curve graph obtained under different situations by these, and with practical logging mistake
The sound width curve graph obtained in journey compares, to understand the cementing situation of well cementation
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on should be included in the utility model
Protection scope within.
Claims (7)
- A kind of indoor simulation device 1. high temperature and pressure is logged well, which is characterized in that the high temperature and pressure well logging indoor simulation device packet It includes:Test kettle comprising autoclave body, sealing kettle cover and model component, the autoclave body upper end opening can with the sealing kettle cover Dismantling connection, formed one measurement chamber, the model component be built in it is described measurement it is intracavitary, lower end and the autoclave body bottom surface are closed Connection, the model component include casing and the simulated formation that is socketed on outside described sleeve pipe, the simulated formation and the set A cement chamber is formed between pipe, the cement chamber includes four sub- cavitys, the first sub- cavity, the second sub- cavity, the sub- cavity of third And the 4th sub- cavity be sequentially connected and form an annular around described sleeve pipe, cement is filled at least one described sub- cavity；Measuring probe comprising feeler lever, multiple normal probes and multiple angle probes, described feeler lever one end pass through the seal pot Lid, is inserted into described sleeve pipe, the normal probe and the angle probe are connect with the feeler lever side wall, are arranged in described sleeve pipe It is interior；Heater is abutted with the autoclave body outer wall；Pressurizing device comprising press machine and forcing pipe, described forcing pipe one end are connected to the press machine, and the other end is connected to institute State measurement chamber.
- The indoor simulation device 2. high temperature and pressure according to claim 1 is logged well, which is characterized in that the test kettle further includes One rotation scale, the seal pot, which covers, offers a mounting hole, and the rotation scale is embedded in the mounting hole, institute Feeler lever one end is stated to connect with the rotation scale.
- The indoor simulation device 3. high temperature and pressure according to claim 2 is logged well, which is characterized in that the high temperature and pressure well logging Indoor simulation device further includes the thermometer and pressure gauge being connected to the measurement chamber.
- The indoor simulation device 4. high temperature and pressure according to claim 3 is logged well, which is characterized in that the high temperature and pressure well logging Indoor simulation device further includes sound wave the conversion switch, data collector, sound wave successively connecting with the measuring probe electric signal Processor and phonodeik.
- The indoor simulation device 5. high temperature and pressure according to claim 4 is logged well, which is characterized in that the data collector is Pulse generation receiving instrument.
- The indoor simulation device 6. high temperature and pressure according to claim 4 is logged well, which is characterized in that the sound wave processor is High-speed transient signal Acquisition Instrument.
- The indoor simulation device 7. high temperature and pressure according to claim 4 is logged well, which is characterized in that phonodeik is number Display.
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| CN201821201126.5U CN208830993U (en) | 2018-07-27 | 2018-07-27 | High temperature and pressure well logging indoor simulation device |
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| CN201821201126.5U CN208830993U (en) | 2018-07-27 | 2018-07-27 | High temperature and pressure well logging indoor simulation device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108952684A (en) * | 2018-07-27 | 2018-12-07 | 长江大学 | High temperature and pressure well logging indoor simulation device and its test method |
| CN111827976A (en) * | 2020-08-25 | 2020-10-27 | 中国石油大学(华东) | Well cementation quality measuring device and method |
| CN111827977A (en) * | 2020-08-25 | 2020-10-27 | 中国石油大学(华东) | Acoustic wave measuring instrument device and acoustic wave measuring method for indoor well cementation quality evaluation |
| CN112160742A (en) * | 2020-09-09 | 2021-01-01 | 中石化石油工程技术服务有限公司 | Simulation device and method for establishing well cementation quality evaluation index |
-
2018
- 2018-07-27 CN CN201821201126.5U patent/CN208830993U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108952684A (en) * | 2018-07-27 | 2018-12-07 | 长江大学 | High temperature and pressure well logging indoor simulation device and its test method |
| CN111827976A (en) * | 2020-08-25 | 2020-10-27 | 中国石油大学(华东) | Well cementation quality measuring device and method |
| CN111827977A (en) * | 2020-08-25 | 2020-10-27 | 中国石油大学(华东) | Acoustic wave measuring instrument device and acoustic wave measuring method for indoor well cementation quality evaluation |
| CN111827977B (en) * | 2020-08-25 | 2023-09-22 | 中国石油大学(华东) | Acoustic wave tester device and acoustic wave testing method for evaluating indoor well cementation quality |
| CN111827976B (en) * | 2020-08-25 | 2023-10-20 | 中国石油大学(华东) | Well cementation quality measuring device and method |
| CN112160742A (en) * | 2020-09-09 | 2021-01-01 | 中石化石油工程技术服务有限公司 | Simulation device and method for establishing well cementation quality evaluation index |
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Granted publication date: 20190507 |