CN109138906A - Simulate the test device and method of underground cementing concrete ring comprehensive performance - Google Patents
Simulate the test device and method of underground cementing concrete ring comprehensive performance Download PDFInfo
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- CN109138906A CN109138906A CN201811098379.9A CN201811098379A CN109138906A CN 109138906 A CN109138906 A CN 109138906A CN 201811098379 A CN201811098379 A CN 201811098379A CN 109138906 A CN109138906 A CN 109138906A
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- cement sheath
- cementing cement
- comprehensive performance
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- blind plug
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/13—Methods or devices for cementing, for plugging holes, crevices or the like
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
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- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
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- Geochemistry & Mineralogy (AREA)
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
本发明提供一种模拟井下固井水泥环综合性能的测试装置及方法，该测试装置包括：内管，具有密闭内腔，所述内管的两端通过连接板密封连接，所述密闭内腔中填充有压力介质；外管，套设在所述内管的外部，所述外管与所述内管之间形成有环形空腔，所述外管的两端能分别连接有第一外盲堵和第二外盲堵，所述第一外盲堵上连接有能向所述外管内注入压力液的试压接头；其中，在所述环形空腔中填充有固井水泥环。本发明能测试不同水泥浆体系、不同环空间隙时水泥环的胶结能力，本发明可以非常方便且精确的测量油气井固井水泥浆的胶结性能。
The invention provides a test device and method for simulating the comprehensive performance of downhole cementing cement sheath. The test device includes: an inner tube with a closed inner cavity, two ends of the inner tube are sealed and connected by connecting plates, and the closed inner cavity is is filled with pressure medium; the outer tube is sleeved on the outside of the inner tube, an annular cavity is formed between the outer tube and the inner tube, and the two ends of the outer tube can be respectively connected with a first outer tube Blind plug and second outer blind plug, the first outer blind plug is connected with a pressure test joint capable of injecting pressure liquid into the outer pipe; wherein, the annular cavity is filled with a cementing cement ring. The invention can test the cementing ability of the cement ring under different cement slurry systems and different annular gaps, and the invention can very conveniently and accurately measure the cementing performance of the cementing cement slurry of oil and gas wells.
Description
Technical field
The present invention relates to oil/gas wells to be drilled well field more particularly to a kind of survey for simulating underground cementing concrete ring comprehensive performance
Try device and method.
Background technique
With the lasting discovery and exploitation of petroleum resources, current oil-gas exploration and development region is gradually turned to by land
Shallow sea and deep-sea have turned to hp-ht well even superhigh temperature superelevation kill-job by conventional normal Temperature-pressure Conditions well.For
Take extremely high marine drilling and degree-of-difficulty factor, technical requirements, operating cost high hp-ht well operation day, especially
Marine hp-ht well, each single item link in operation can operation timeliness to full well, win or lose have it is extremely crucial
Influence.For hp-ht well, due to the equal very severe of temperature and pressure condition on stratum, good cementing slurry can be with
Ensure qualified well cementation effect, it is ensured that cementing concrete ring will not occur to destroy to lose to well due to severe Temperature-pressure Conditions
The supporting role on setting of casing and stratum, so situ of drilling well, especially high temperature and pressure are drilled well operations scene to cementing slurry
Comprehensive performance have extremely harsh requirement.Therefore, develop it is a set of it is economical, conveniently, efficiently device is different for testing
Bonding capacity of the cementing slurry under different borehole conditions be it is extremely necessary, can also rapidly and efficiently filter out satisfaction
The cementing slurry that scene needs.
Summary of the invention
The object of the present invention is to provide a kind of test device and method for simulating underground cementing concrete ring comprehensive performance, the surveys
Simple, intuitive is set in trial assembly, the cementing power of cement sheath when can test different mortar architectures, different annular clearance, and the present invention can be with
The bonding capacity of very convenient and accurate measurement oil gas well cementing operation cement slurry.
Following technical proposal can be used to realize in above-mentioned purpose of the invention:
The present invention provides a kind of test devices for simulating underground cementing concrete ring comprehensive performance, comprising:
Inner tube, has sealed internal chamber, and the both ends of said inner tube are tightly connected by connecting plate, are filled in the sealed internal chamber
There is pressure medium；
Outer tube is set in the outside of said inner tube, and toroidal cavity is formed between the outer tube and said inner tube, described outer
The both ends of pipe can be connected separately with the first outer blind plugging and the second outer blind plugging, and being connected in the first outer blind plugging can be to the outer tube
The action pressure-testing joint of interior injection pressure liquid；
Wherein, cementing concrete ring is filled in the toroidal cavity.
In embodiments of the present invention, the described first outer blind plugging including the first bottom wall and is connected to the first bottom wall week
First barrel of edge, first barrel have the first internal thread segment, and the first outer blind plugging passes through first internal thread segment
It is threaded in one end of the outer tube, the action pressure-testing joint is arranged on first bottom wall.
In embodiments of the present invention, the first quick coupling, the first fast quick access are connected on first barrel
First pressure gauge can be connected on head.
In embodiments of the present invention, the described second outer blind plugging including the second bottom wall and is connected to the second bottom wall week
Second barrel of edge, second barrel have the second internal thread segment, and the second outer blind plugging passes through second internal thread segment
It is threaded in the other end of the outer tube.
In embodiments of the present invention, the second quick coupling, the second fast quick access are connected on second barrel
Second pressure gauge can be connected on head.
In embodiments of the present invention, the cementing concrete ring is formed in the toroidal cavity by interior blind plugging, institute
Stating interior blind plugging includes:
Block, one end along the circumferential direction offer it is multiple be axially inserted into hole, the block is located at the described first outer blind plugging
It is interior；
First baffle, is along the circumferential direction connected with multiple connecting rods thereon, and the multiple connecting rod can be inserted into the multiple
It is axially inserted into hole, the first baffle is located in the toroidal cavity；
Second baffle is located in the toroidal cavity, and the cementing concrete ring is folded in the first baffle and described the
Between two baffles.
In embodiments of the present invention, described to be axially inserted into Kong Weisi, hole is axially inserted into described in four along the gear
One end of the block is arranged in the circumferencial direction of block at equal intervals.
In embodiments of the present invention, the first baffle and the second baffle have the worn for said inner tube
One centre bore and the second centre bore.
In embodiments of the present invention, first centre bore is eccentric orfice, and second centre bore is eccentric orfice.
The present invention also provides a kind of test methods for simulating underground cementing concrete ring comprehensive performance, use as described above
Simulate the test device of underground cementing concrete ring comprehensive performance, the test method of the simulation underground cementing concrete ring comprehensive performance
Include the following steps:
Step S1: the distance at the both ends of cementing concrete ring both ends away from said inner tube respectively is measured, and described outer
The initial position at cementing concrete ring both ends is marked on pipe；
Step S2: liquid medium is injected into the outer tube by the action pressure-testing joint in the described first outer blind plugging；
Step S3: after the completion of pressure testing, the both ends of the cementing concrete ring both ends away from said inner tube respectively are measured again
Distance, and the physical location at cementing concrete ring both ends after the completion of marking pressure testing on the outer tube, observe the outer tube
The situation of change of the relatively described initial position of the physical location of upper label.
The characteristics of test device and method of simulation underground cementing concrete ring comprehensive performance of the invention and advantage are:
(1) present apparatus can carry out simulated experiment repeatedly, and facilitate subsequent dismounting, maintenance and transformation；
(2) present apparatus measuring accuracy is high, fast and accurately can filter out satisfactory cement slurry for scene；
(3) present apparatus structure is simpler, low in cost, is easy to use；
(4) this method can simulate different borehole gaps according to on-site actual situations, to measure the bonding capacity of cement sheath；
(5) present apparatus can combine on-site actual situations, the cementing performance in analog casing bias situation.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing.
Fig. 1 is the structural schematic diagram of the test device of simulation underground cementing concrete ring comprehensive performance of the invention.
Fig. 2 is the structural schematic diagram of inner tube of the invention.
Fig. 3 is the structural schematic diagram of outer tube of the invention.
Fig. 4 is that cementing concrete ring of the invention is formed in the structural schematic diagram in toroidal cavity.
Fig. 5 is the block of interior blind plugging of the invention and the attachment structure schematic diagram of first baffle.
Fig. 6 is the connection structure of block and first baffle of the invention and the structural schematic diagram of inner tube cooperation.
The structural schematic diagram of device and outer tube, the first outer blind plugging cooperation that Fig. 7 is Fig. 6.
Fig. 8 is the structural schematic diagram in the formation of cementing concrete ring and the toroidal cavity between outer tube and inner tube.
Drawing reference numeral explanation: 1, inner tube；11, sealed internal chamber；12, connecting plate；2, outer tube；21, toroidal cavity；22, outer spiral shell
Line section；23, external thread section；3, the first outer blind plugging；31, action pressure-testing joint；32, the first bottom wall；33, the first barrel；331, in first
Thread segment；34, the first quick coupling；35, first pressure gauge；36, closed annular space；4, the second outer blind plugging；41, the second bottom wall；42,
Second barrel；421, the second internal thread segment；43, the second quick coupling；44, second pressure gauge；5, cementing concrete ring；6, interior blind
It is stifled；61, block；611, it is axially inserted into hole；62, first baffle；621, the first centre bore；622, threaded hole；63, second baffle；
631, the second centre bore；64, connecting rod.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Embodiment one
As shown in Figure 1, to cementing concrete when the present invention is solution high temperature and pressure drilling well, especially marine high temperature and pressure drilling well
It is high to starch bonding capacity requirement, and cement slurry bonding capacity while indefinite problem, provide a kind of simulation underground well cementation water
The test device of mud ring comprehensive performance, the test device include inner tube 1 and outer tube 2, wherein inner tube 1 has sealed internal chamber 11, institute
The both ends for stating inner tube 1 are tightly connected by connecting plate 12, and pressure medium is filled in the sealed internal chamber 11；Outer tube 2 is set in
The outside of said inner tube 1, is formed with toroidal cavity 21 between the outer tube 2 and said inner tube 1, the both ends of the outer tube 2 can be divided
It is not connected with the first outer blind plugging 3 and the second outer blind plugging 4, pressure can be injected into the outer tube 2 by being connected in the first outer blind plugging 3
The action pressure-testing joint 31 of power liquid；Wherein, cementing concrete ring 5 is filled in the toroidal cavity 21.
Specifically, as shown in Fig. 2, inner tube 1 is the smooth steel cylindrical tube of an outer wall, material and size are referring to scene
Common casing size and material are chosen when actual job, and the both ends of the surface of inner tube 1 are with the consistent connection of same tube material
Plate 12 carries out Seal treatment, and in the present embodiment, which is plectane, so that inner tube 1 constitutes an inside and has in closed
The cylindrical body of chamber 11.In the present invention, the pressure medium of certain pressure, the pressure are filled in the sealed internal chamber 11 of inner tube 1
Medium may be, for example, water, other safe and pollution-free fluids such as air can also be used certainly, to ensure in subsequent pressure testing operation
In the process, inner tube 1 will not be influenced because of deforming under the effect of external force test as a result, leading to test data not
It is quasi-.
As shown in figure 3, outer tube 2 is identical as the material of inner tube 1, it is the cylindrical tube shape of both ends open, at the both ends of outer tube 2
Equal vehicle has external thread section 22 and external thread section 23, which is set in the outside of inner tube 1, is formed with toroidal cavity therebetween
21.In the present invention, the wall thickness of outer tube 2 can be selected according to experiment, identical by the replacement thicker outer diameter of wall thickness
Outer tube 2 can make the volume of the toroidal cavity 21 formed between outer tube 2 and inner tube 1 smaller, correspondingly, outer tube 2 and inner tube 1
Between the thickness of cementing concrete ring 5 that fills it is also smaller, so as to simulate under the gap condition of different toroidal cavities 21
The bonding capacity of cementing slurry to be tested.
The both ends of outer tube 2 are connected separately with the first outer blind plugging 3 and the second outer blind plugging 4, the outer diameter of outer tube 2 are slightly smaller than outside first
The outer diameter of blind plugging 3 and the second outer blind plugging 4.In the present invention, please refer to shown in Fig. 1, which includes the first bottom
Wall 32 and the first barrel 33 for being connected to 32 periphery of the first bottom wall, first barrel 33 have the first internal thread segment 331, this first
Outer blind plugging 3 is threaded in one end of outer tube 2 by the first internal thread segment 331, for example, the first outer blind plugging 3 passes through in first
Thread segment 331 is threaded on the external thread section 22 of outer tube 2；The action pressure-testing joint 31 is arranged on the first bottom wall 32, in this reality
It applies in example, the height of the action pressure-testing joint 31 is identical as the thickness of the first bottom wall 32.Further, it is connected on the first barrel 33
First quick coupling 34, first quick coupling 34 are arranged between the end of the first internal thread segment 331 and the first bottom wall 32
On first barrel 33, the inside of first quick coupling 34 and the first outer blind plugging 3 is interconnected, and first pressure gauge 35 can be connected to
In first quick coupling 34, first pressure gauge 35 is allowed to monitor the pressure change in corresponding closed area.
In the present invention, which includes the second bottom wall 41 and is connected to second of 41 periphery of the second bottom wall
Wall 42, second barrel 42 have the second internal thread segment 421, which is threadedly coupled by the second internal thread segment 421
In the other end of outer tube 2, for example, the second outer blind plugging 4 is threaded in the external screw thread of outer tube 2 by the second internal thread segment 421
In section 23.Further, the second quick coupling 43 is connected on the second barrel 42, which is arranged second
On the second barrel 42 between the end of internal thread segment 421 and the second bottom wall 41, second quick coupling 43 and the second outer blind plugging 4
Inside be interconnected, second pressure gauge 44 can be connected in the second quick coupling 43, and second pressure gauge 44 is monitored
Pressure change in corresponding closed area.
In embodiments of the present invention, as shown in figure 4, consolidating in toroidal cavity 21 between inner tube 1 and outer tube 2
Well cement ring 5 is formed in the toroidal cavity 21 by interior blind plugging 6.Specifically, the interior blind plugging 6 includes block 61, first
Baffle 62 and second baffle 63, in which: one end of block 61 along the circumferential direction offer it is multiple be axially inserted into hole 611, the block
61 are located in the first outer blind plugging 3；Multiple connecting rods 64 are along the circumferential direction connected on first baffle 62, multiple connecting rods 64 can insert
Enter it is multiple be axially inserted into hole 611, first baffle 62 is located in toroidal cavity 21；Second baffle 63 is located in toroidal cavity 21,
The cementing concrete ring 5 is folded between first baffle 62 and second baffle 63.
Specifically, it can be metal that block 61, which is solid a cylindrical body or cuboid, please refer to shown in Fig. 5
It can be made of the higher other materials of intensity, an end face of block 61 is circumferentially spaced to be axially inserted into hole equipped with multiple
611, those, which are axially inserted into hole 611, to be circular aperture eye, which can be 1cm~1.5cm.At this
In embodiment, set in an end face uniform intervals of block 61 there are four being axially inserted into hole 611.
First baffle 62 and second baffle 63 are annular baffle, and the outer diameter of the two is slightly smaller than the first outer blind plugging 3
The internal diameter of the internal diameter of first barrel 33 and the second barrel 42 of the second outer blind plugging 4, on first baffle 62 and second baffle 63
It is respectively equipped with the first centre bore 621 and the second centre bore 631, to be set in the outside of inner tube 1.In the present embodiment, this
One centre bore 621 and the second centre bore 631 are not limited to be provided with the center of first baffle 62 Yu second baffle 63, according to
Second centre bore 631 of the first centre bore 621 of first baffle 62, second baffle 63 can be designed as a variety of by the needs of experiment
The central point of different eccentric distance namely the first centre bore 621 be not overlapped with the central point of 62 excircle of first baffle and
The central point of second centre bore 631 is not overlapped with the central point of 63 excircle of second baffle.In the present invention, the first baffle 62
The first centre bore 621 diameter and the diameter of the second centre bore 631 of second baffle 63 it is close with the outer diameter of inner tube 1, and
Slightly larger than the outer diameter of inner tube 1, the outer diameter of the first baffle 62 is slightly larger than the outer diameter of block 61 with the outer diameter of second baffle 63, and small
In the internal diameter of outer tube 2.In the present invention, in an end face of first baffle 62, along the circumferential direction vehicle has multiple threaded holes 622, at this
In embodiment, in an end face of first baffle 62, along the circumferential direction vehicle is there are four the threaded hole 622 of uniform intervals arrangement, this first
Four threaded holes 622 on baffle 62 are consistent with four relative positions for being axially inserted into hole 611 on block 61, in symmetrical
Distribution.
One end vehicle of connecting rod 64 has external thread section, to be threaded in one with the threaded hole 622 on first baffle 62
It rises；The other end of connecting rod 64 is smooth metal round rod, and the diameter of the metal round rod is axially inserted into hole 611 on block 61
Diameter it is close, it is ensured that the other end of connecting rod 64 can be inserted being axially inserted into hole on block 61 and freedom will not occur
It is mobile, it can make to separate between block 61 and connecting rod 64 under the effect of external force.
As shown in figure 5, after being connected in the above manner between four connecting rods 64, block 61, first baffle 62, it will not
Opposite movement occurs either to rotate, while can guarantee block 61 in the state of vertical place, first baffle 62 is in freedom
State is either able to maintain level under the external force of vertical direction, by replacing in first with different eccentric distances
The second baffle 63 of the first baffle 62 in heart hole 621 and the second centre bore 631 with different eccentric distances, test of the invention
The device scene of can really simulating casing that may be present situation not placed in the middle, so that the inner tube 1 in test device of the invention
Not on the same axis with outer tube 2, the situation that side space is big and other side space is small is formed, biggish for space one
The volume of side, cementing slurry is bigger, and the thickness of cementing concrete ring 5 is thicker, and the thickness of the small side cementing concrete ring 5 in space
It spends relatively small, causes the cementing concrete ring 5 of inner tube 1 and 2 two sides of outer tube uneven, work as tubing string in different journeys so as to test
The cementing power of cementing slurry to be tested when the eccentric situation of degree.
The work step of the test device of the simulation underground cementing concrete ring comprehensive performance is as follows:
1, by the both ends welded connecting plate 12 of ready inner tube 1, both ends deburring guarantees that outer diameter is uniform, such as Fig. 2 institute
Show；
2, it will be together by a threaded connection between the screwed one end of four connecting rods 64 and first baffle 62, and
Guarantee that first baffle 62 is horizontal；
3, inner tube 1 is passed through to the first centre bore 621 of first baffle 62, until an end face of inner tube 1 is contacted with block 61,
As shown in Figure 5 and Figure 6；
4, the first outer blind plugging 3 is together by a threaded connection with outer tube 2, and by the inner tube 1 connected in step 3 and
One baffle 62, block 61 connection structure be fitted into outer tube 2 along the other end of outer tube 2 together, until block 61 bottom face
The inner face of the first outer blind plugging 3 is contacted, as shown in Figure 7；
5, the device connected in step 4 is put vertically vertical, the first outer blind plugging 3 is located at downside at this time, later to inner tube 1 with
The toroidal cavity 21 of outer tube 2 fills cementing slurry on probation to be measured, and the upper surface of cementing slurry filling is lower than inner tube 1 and outside
The upper surface of toroidal cavity 21 between pipe 2, as shown in Figure 4；
6, the upper surface for the cementing slurry filled using 63 Duis of second baffle is compacted；
7, it keeps current state to stand design duration T, is later horizontally arranged whole device, and outside the first of removal lower end
The first baffle 62 and second baffle 63 at blind plugging 3 and both ends, as shown in Figure 8；
8, the distance of both ends of the surface of the position of 5 two endfaces of cementing concrete ring at this time respectively away from inner tube 1 is measured, and outside
The initial position that 5 both ends of cementing concrete ring are marked on pipe 2, is connected to step for the first outer blind plugging 3 and the second outer blind plugging 4 later
The both ends of outer tube 2 in rapid 7, as shown in Figure 1；
9, liquid is filled in the closed annular space 36 formed by action pressure-testing joint 31 to outer tube 2, inner tube 1, cementing concrete ring 5 to be situated between
Matter, and first pressure gauge 35 is connected to corresponding first quick coupling 34 and the second quick coupling with second pressure gauge 44
On 43, records the reading of current first pressure gauge 35 or return to zero to first pressure gauge 35；By 44 institute of second pressure gauge
Pressure changing in the correspondence closed area of monitoring may be smaller, therefore 44 permissible accuracy of second pressure gauge is higher than
One pressure gauge 35, while the range of second pressure gauge 44 is smaller than first pressure gauge 35.
10, pressure testing pipeline is connect with action pressure-testing joint 31, local terminal is carried out to suppress operation, suppress value be respectively 2MPa,
5MPa, 8MPa, 10MPa, 15MPa and 20MPa are suppressed for every group and are finished later maintenance pressure state 15 minutes, suppressing and pressing
In the overall process that power maintains, the pressure data of first pressure gauge 35 and second pressure gauge 44, the second pressure of emphasis record are recorded in detail
Whether power table 44 changes in the process；
11, after the completion of pressure testing, disassembly measures the distance at both ends of the both ends of cementing concrete ring 5 respectively away from inner tube 1 again,
And the physical location at 5 both ends of cementing concrete ring after the completion of marking pressure testing on outer tube 2, observe the actual bit marked on outer tube 2
Set the situation of change of relative initial position.
In the present invention, the first baffle 62 and second baffle 63 for replacing different eccentric distances, continue according to step 1~11
Carry out test, so as to simulate the bonding capacity of cement slurry to be tested in live casing situation not placed in the middle.
In the present invention, the outer tube 2 for replacing different inner diameters carries on test according to step 1~11, so as to simulate
The bonding capacity of live casing and cement slurry to be tested in the case of the annular clearance different size of ground interlayer.
Finally, analysis each group of data as a result, suppress and pressure maintain overall process in, if second pressure gauge 44 is not pressed
Power variation, it may be considered that the consolidation effect of such cementing slurry is preferable, its cementing strength is full under current experiment condition
Foot requires.
Beneficial effects of the present invention are as follows:
(1) this test device can carry out simulated experiment repeatedly, and facilitate subsequent dismounting, maintenance and transformation；
(2) this test device measuring accuracy is high, fast and accurately can filter out satisfactory cementing concrete for scene
Slurry；
(3) this test device structure is simpler, low in cost, is easy to use；
(4) this test device can combine on-site actual situations, the glue of the cementing slurry in analog casing bias situation
Tie performance.
Embodiment two
As shown in Figures 1 to 8, the present invention also provides a kind of test sides for simulating underground cementing concrete ring comprehensive performance
Method uses the test device of simulation underground cementing concrete ring comprehensive performance as described above, simulation underground cementing concrete
The test method of ring comprehensive performance includes the following steps:
Step S1: the distance at both ends of the both ends of the cementing concrete ring 5 respectively away from said inner tube 1 is measured, and described
The initial position at 5 both ends of cementing concrete ring is marked on outer tube 2；
Step S2: liquid Jie is injected into the outer tube 2 by the action pressure-testing joint 31 in the described first outer blind plugging 3
Matter；
Step S3: after the completion of pressure testing, both ends of the both ends of the cementing concrete ring 5 respectively away from said inner tube 1 are measured again
Distance, and the physical location at 5 both ends of cementing concrete ring after the completion of marking pressure testing on the outer tube 2, described in observation
The situation of change of the relatively described initial position of the physical location marked on outer tube 2.
Specific experiment step described in present embodiment specifically describes in embodiment 1, and details are not described herein.
The test method of simulation underground cementing concrete ring comprehensive performance of the invention, can test different mortar architectures,
The cementing strength size of cementing concrete ring under different annular clearances and tubing string bias situation, can very convenient and accurate survey
The bonding capacity of oil gas well cementing operation cement slurry is measured, provides theoretical direction with the well cementing operation for scene.
The foregoing is merely several embodiments of the present invention, and those skilled in the art is according to application documents disclosure
Various changes or modifications can be carried out without departing from the spirit and scope of the present invention to the embodiment of the present invention.
Claims (10)
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| CN201811098379.9A CN109138906B (en) | 2018-09-20 | 2018-09-20 | Testing device and method for simulating the comprehensive performance of underground cement sheath |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115406596A (en) * | 2021-05-28 | 2022-11-29 | 中国石油天然气集团有限公司 | Evaluation device and evaluation method for oil-water-gas channeling resistance of cement sheath |
| CN116087434A (en) * | 2023-03-13 | 2023-05-09 | 中国石油天然气集团有限公司 | Testing device and testing method |
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| CN116087434B (en) * | 2023-03-13 | 2024-03-29 | 中国石油天然气集团有限公司 | Testing device and testing method |
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