CN106593411B - A kind of cement sheath sealing and the experimental provision and method of sleeve pipe lifting - Google Patents
A kind of cement sheath sealing and the experimental provision and method of sleeve pipe lifting Download PDFInfo
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- CN106593411B CN106593411B CN201710015991.4A CN201710015991A CN106593411B CN 106593411 B CN106593411 B CN 106593411B CN 201710015991 A CN201710015991 A CN 201710015991A CN 106593411 B CN106593411 B CN 106593411B
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- pressure
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- air source
- production casing
- sleeve pipe
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/005—Monitoring or checking of cementation quality or level
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B49/00—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
Abstract
The present invention provides the experimental provision and method of a kind of cement sheath sealing and sleeve pipe lifting.Cement sheath sealing and the experimental provision of sleeve pipe lifting include：Kettle, there are multiple sleeve pipes inside kettle, including：Surface pipe；The intermediate casing being coaxially nested inside surface pipe, with surface pipe；The production casing being coaxially nested inside intermediate casing, with intermediate casing；Also include：Cement mortar holding vessel；Heating rod, it is lowered into production casing inner chamber；The automatic confined pressure pump being connected with confined pressure chamber；Confined pressure sensor between confined pressure chamber and automatic confined pressure pump；The interior press pump being connected with production casing inner chamber；High-pressure air source；High-pressure air source pressure sensor between high-pressure air source and kettle；Production casing inner chamber, the first annular space and the second annular space are inserted with temperature sensor；Displacement transducer is all connected with production casing and intermediate casing；Gas flowmeter.By implementing the present invention, can simulate HTHP influences result to well head lifting and cement sheath sealing.
Description
Technical field
The present invention relates to Oil-Gas Well Engineering field, in particular it relates to the experiment of a kind of cement sheath sealing and sleeve pipe lifting
Device and method.
Background technology
High temperature and high pressure environment can cause cement sheath performance change, and sealing failure, sleeve pipe axial direction thermal stress is excessive to be caused
Well head lifting.At present, although some oil wells obtain good logging evaluation after well cementing operation, oil well by high temperature and
Well head lifting occurs after hyperbaric environment, well head bleed, steams, or even interlayer occurs and alters the complex situations such as groove.Therefore, to cement
Ring sealing fails and the research of well head uplifting mechanism has good field application meaning.
But current experimental provision can not fully simulate high temperature and high pressure environment to casing string lifting and cement sheath sealing
Influence result, can not for oil field production risk analyze reliable theoretical foundation be provided.
The content of the invention
The main purpose of the embodiment of the present invention is the experimental provision for providing a kind of cement sheath sealing and sleeve pipe lifting, uses
To simulate high temperature and high pressure environment to casing string lifting and the influence result of cement sheath sealing.To achieve these goals, this hair
Bright embodiment provides the experimental provision of a kind of cement sheath sealing and sleeve pipe lifting, including：Kettle, there are multiple sets inside kettle
Pipe, including：Confined pressure chamber is formed between surface pipe, with clamper shell；Inside surface pipe, with the coaxial phase of surface pipe
The intermediate casing of set, and form the second annular space with surface pipe；The life being coaxially nested inside intermediate casing, with intermediate casing
Sleeve pipe is produced, and the first annular space is formed with intermediate casing；Cement sheath sealing and the experimental provision of sleeve pipe lifting also include：Cement mortar
Holding vessel, for injecting cement mortar to the first annular space and the second annular space；Heating rod, production casing inner chamber is lowered into, for heating
Liquid is heated to design temperature；The automatic confined pressure pump being connected with confined pressure chamber, for applying setting confined pressure to surface pipe；Positioned at confined pressure
Confined pressure sensor between chamber and automatic confined pressure pump, for gathering confined pressure data；The interior press pump being connected with production casing inner chamber, to
Production casing inner chamber applies setting internal pressure；Interior pressure sensor inside production casing, for gathering internal pressure data；High pressure gas
Source, for inputting gases at high pressure to the first annular space and the second annular space；High-pressure air source pressure between high-pressure air source and kettle
Sensor, for gathering high-pressure air source pressure data；Production casing inner chamber, the first annular space and the second annular space are inserted with TEMP
Device, for collecting temperature data；Displacement transducer is all connected with production casing and intermediate casing, for gathering production casing with
Between sleeve pipe displacement data；Gas flowmeter, for measuring the gas flow of the first annular space and the second annular space respectively.
In wherein a kind of embodiment, in addition to：Respectively with heating rod, automatic confined pressure pump, high-pressure air source, interior press pump, interior
Pressure sensor, confined pressure sensor, high-pressure air source pressure sensor, gas flowmeter, multiple temperature sensors and multiple displacements
The computer of sensor connection, set for controlling heating rod heating heating liquid, the automatic confined pressure pump of control to apply to surface pipe
Confined pressure, control high-pressure air source input gases at high pressure to the first annular space and the second annular space, and press pump is applied to production casing inner chamber in control
Add and determine internal pressure, gather the confined pressure data from confined pressure sensor, the internal pressure data from interior pressure sensor, from high-pressure air source
The high-pressure air source pressure data of pressure sensor, the first annular space from gas flowmeter and the second annular space gas flow, come
From multiple temperature datas of multiple temperature sensors and the production casing from multiple displacement transducers and intermediate casing it is more
Individual displacement data.
In wherein a kind of embodiment, in addition to：Cement mortar master control valve, first end are connected with cement mortar holding vessel, the
Two ends are connected with the second end of high-pressure air source master control valve, the first control valve first end and the second control valve first end respectively；High pressure
Source of the gas master control valve, first end are connected with high-pressure air source, the second end also respectively with the first control valve first end and the second control valve
First end connects；First control valve, first end are also connected with the second control valve first end, and the second end is connected with the first annular space；The
Two control valves, the second end are connected with the second annular space；The control valve of gas flowmeter first, first end are connected with the first annular space, and second
End is connected with the second end of the second control valve of gas flowmeter and gas flow meter respectively；The control valve of gas flowmeter second, first
End is connected with the second annular space, and the second end is also connected with gas flowmeter；Internal pressure pump control valve, first end are connected with interior press pump, the
Two ends are connected with production casing inner chamber.
In wherein a kind of embodiment, in addition to：Kettle includes upper kettle cover and lower kettle seat；Upper kettle cover on lower kettle seat with having
Multiple grooves facing each other, for inserting surface pipe, intermediate casing and production casing respectively.
In wherein a kind of embodiment, in addition to：Multiple sealing rings, for sealing multiple grooves.
In wherein a kind of embodiment, in addition to：Positioned at the upper runner of upper kettle cover；Upper runner is connected with condenser pump, condensation
Pump is used to convey kettle cover in condensation water cooling；Pump control valve is condensed, first end is connected with upper runner, and the second end connects with condenser pump
Connect.
In wherein a kind of embodiment, heating liquid is oil or water.
Because the cement sheath sealing of the present invention and the experimental provision of sleeve pipe lifting are by cement mortar holding vessel to the first ring
Empty and the second annular space injection cement mortar simulated formation geological environment, heating liquid is heated to design temperature by heating rod, passed through
Automatic confined pressure pump applies setting confined pressure to surface pipe, applies setting internal pressure to production casing inner chamber by interior press pump, passes through height
Pressurized air source inputs gases at high pressure to the first annular space and the second annular space, passes through confined pressure sensor, interior pressure sensor, high-pressure air source pressure
Sensor, gas flowmeter, temperature sensor and displacement transducer carry out data acquisition, and well head is lifted so as to simulate HTHP
Rise and cement sheath sealing influences result.
The embodiment of the present invention also provides a kind of cement sheath sealing and the experimental method of sleeve pipe lifting, to simulate high temperature height
Pressure ring border to casing string lifting and the influence result of cement sheath sealing, for the analysis of oil field production risk provides reliable theory according to
According to.
To achieve these goals, the embodiment of the present invention provides a kind of cement sheath sealing as described above and sleeve pipe lifting
Experimental provision experimental method, including：To production casing inner chamber injection heating liquid, cement mortar holding vessel is to the first annular space and
Two annular injection full water mud；Heating rod heating heats liquid to design temperature；Automatic confined pressure pump applies setting confined pressure to surface pipe,
Interior press pump applies setting internal pressure to production casing inner chamber；The of setting maintenance cement sheath sealing and the experimental provision of sleeve pipe lifting
One time, until the cement sheath that cement mortar is cemented to is cemented to an entirety with surface pipe, intermediate casing and production casing；It is more
The displacement data of individual displacement transducer collection production casing and intermediate casing；Close heating rod order heating liquid temperature degree and be down to normal temperature,
In the process, the displacement data of multiple displacement transducer collection production casings and intermediate casing, the collection of multiple temperature sensors
Multiple temperature datas, until the displacement data of production casing and intermediate casing is constant；High-pressure air source is to the first annular space and the second ring
Sky input gases at high pressure；High-pressure air source pressure sensor gathers high-pressure air source pressure data, and gas flowmeter measures first respectively
The gas flow data of annular space and the second annular space.
In wherein a kind of embodiment, in addition to：Heating rod heating heating liquid, the automatic confined pressure pump of control is controlled to be covered to top layer
Pipe applies setting confined pressure, and press pump applies setting internal pressure to production casing inner chamber in control, gathers the confined pressure from confined pressure sensor
Data, the internal pressure data from interior pressure sensor, the high-pressure air source pressure data from high-pressure air source pressure sensor, from gas
First annular space of flowmeter body and the gas flow of the second annular space, multiple temperature datas from multiple temperature sensors and
The displacement data of production casing and intermediate casing from multiple displacement transducers.
In wherein a kind of embodiment, in addition to：Kettle cover in conveying condensation water cooling.
Because the cement sheath sealing of the present invention and the experimental method of sleeve pipe lifting are to production casing inner chamber injection heating liquid
Fluid in analog casing, cement mortar simulated formation geology is injected to the first annular space and the second annular space by cement mortar holding vessel
Environment, heating liquid is heated to design temperature by heating rod, setting confined pressure is applied to surface pipe by automatic confined pressure pump, passed through
Interior press pump applies setting internal pressure to production casing inner chamber, and high pressure gas is inputted to the first annular space and the second annular space by high-pressure air source
Body, passed by confined pressure sensor, interior pressure sensor, high-pressure air source pressure sensor, gas flowmeter, temperature sensor and displacement
Sensor carries out data acquisition, influences result to well head lifting and cement sheath sealing so as to simulate HTHP, draws cement sheath
Sealing and well head lifting changing rule, reliable theoretical foundation is provided for the analysis of oil field production risk.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, embodiment will be described below
In the required accompanying drawing used be briefly described, it should be apparent that, drawings in the following description be only the present invention some
Embodiment, for those of ordinary skill in the art, on the premise of not paying creative work, can also be attached according to these
Figure obtains other accompanying drawings.
Fig. 1 is the structure chart of cement sheath sealing and the experimental provision of sleeve pipe lifting in the embodiment of the present invention；
Fig. 2 is the flow chart of cement sheath sealing and the experimental method of sleeve pipe lifting in the embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made
Embodiment, belong to the scope of protection of the invention.
In view of prior art can not fully simulate high temperature and high pressure environment to casing string lifting and the influence of cement sheath sealing
As a result, the embodiment of the present invention provides the experimental provision of a kind of cement sheath sealing and sleeve pipe lifting, by cement mortar holding vessel to
First annular space and the second annular space injection cement mortar simulated formation geological environment, heating liquid is heated to setting temperature by heating rod
Degree, applies setting confined pressure by automatic confined pressure pump to surface pipe, applies setting internal pressure to production casing inner chamber by interior press pump,
Gases at high pressure are inputted to the first annular space and the second annular space by high-pressure air source, pass through confined pressure sensor, interior pressure sensor, high pressure gas
Source pressure sensor, gas flowmeter, temperature sensor and displacement transducer carry out data acquisition, so as to simulate HTHP pair
Well head lifting and cement sheath sealing influence result.Below in conjunction with accompanying drawing, the present invention is described in detail.
Fig. 1 is the structure chart of cement sheath sealing and the experimental provision of sleeve pipe lifting in the embodiment of the present invention.Such as Fig. 1 institutes
Show, the experimental provision of cement sheath sealing and sleeve pipe lifting includes：Kettle, there are multiple sleeve pipes inside kettle, including：Surface pipe
Confined pressure chamber 2 is formed between 5, with clamper shell 39；The intermediate sleeve being coaxially nested inside surface pipe 5, with surface pipe 5
Pipe 27, and form the second annular space 6 with surface pipe 5；The production being coaxially nested inside intermediate casing 27, with intermediate casing 27
Sleeve pipe 29, and form the first annular space 28 with intermediate casing 27；Cement sheath sealing and the experimental provision of sleeve pipe lifting also include：Water
Slurry Storage tank 10, for injecting cement mortar to the first annular space 28 and the second annular space 6；Heating rod 19, is lowered into production casing
Chamber 30, for heating heating liquid to design temperature；The automatic confined pressure pump 3 being connected with confined pressure chamber 2, for applying to surface pipe 5
Set confined pressure；Confined pressure sensor 4 between confined pressure chamber 2 and automatic confined pressure pump 3, for gathering confined pressure data；Covered with production
The interior press pump 38 that tube cavity 30 connects, apply setting internal pressure to production casing inner chamber 30；Internal pressure inside production casing 29
Sensor 18, for gathering internal pressure data；High-pressure air source 11, for inputting gases at high pressure to the first annular space 28 and the second annular space 6；
High-pressure air source pressure sensor 14 between high-pressure air source 11 and kettle, for gathering high-pressure air source pressure data；Production
Cannula cavity 30, the first annular space 28 and the second annular space 6 are inserted with temperature sensor 20, for collecting temperature data；Production casing
29 and intermediate casing 27 on be all connected with displacement transducer 16, for gathering the displacement data of production casing 29 and intermediate casing 27；
Gas flowmeter 31, for measuring the gas flow of the first annular space 28 and the second annular space 6 respectively.
When it is implemented, kettle can include upper kettle cover 8 and lower kettle seat 35, the upper top of kettle cover 8 is provided with sealing cap, is used for
It is heat-insulated.Upper kettle cover 8 on lower kettle seat 35 with having multiple grooves facing each other, for inserting surface pipe 5, intermediate casing respectively
27 and production casing 29, wherein, groove can be multiple various sizes of concentric circles.Cement sheath sealing and the reality of sleeve pipe lifting
Experiment device can also include multiple sealing rings, for sealing multiple grooves.
In embodiment, cement mortar holding vessel 10, high-pressure air source 11, interior press pump 38 and automatic confined pressure pump 3 can be by defeated
Enter manifold to be connected with kettle.Cement mortar holding vessel 10 is injected necessarily by liquid injection hole 7 and 17 to the first annular space 28 and the second annular space 6
The cement mortar simulated formation geological environment of volume.Wherein, the proportioning of each composition of cement mortar can need any adjustment according to experiment.
Heating rod 9 can heat heating liquid to design temperature using electrically heated mode, make heat outwards transmit, simulation high temperature fluid and
Temperature environment in well.Wherein, it can be oil or water to heat liquid.Automatic confined pressure pump 3 applies setting confined pressure simulation to surface pipe 5
Stratum confined pressure, high-pressure air source 11 input gases at high pressure to the first annular space 28 and the second annular space 6, interior press pump 38 by internal pressure mouth 34 to
Production casing inner chamber 30 applies setting internal pressure, to simulate the pressure environment in well.Confined pressure sensor 4, interior pressure sensor 18, high pressure
The temperature sensors 20 of bleed pressure sensor 14, gas flowmeter 31 and each inside pipe casing carry out data acquisition, root
Result is influenceed on well head lifting and cement sheath sealing according to the change modeling HTHP of data.
As shown in figure 1, cement sheath sealing and the experimental provision of sleeve pipe lifting can also include：Respectively with heating rod 19,
Automatic confined pressure pump 3, interior pressure sensor 18, high-pressure air source 11, interior press pump 38, confined pressure sensor 4, high-pressure air source pressure sensor
14th, the computer 1 that gas flowmeter 31, multiple temperature sensors 20 and multiple displacement transducers 16 connect, add for controlling
The heating heating of hot pin 19 liquid, the automatic confined pressure pump 3 of control apply setting confined pressure to surface pipe 5, control high-pressure air source 11 to first
The annular space 6 of annular space 28 and second inputs gases at high pressure, and press pump 38 applies setting internal pressure to production casing inner chamber 30 in control, and collection comes
Confined pressure data from confined pressure sensor 4, the internal pressure data from interior pressure sensor 18, from high-pressure air source pressure sensor 14
High-pressure air source pressure data, the gas flow of the first annular space 28 from gas flowmeter 31 and the second annular space 6, from multiple temperature
Spend multiple temperature datas and the production casing 29 from multiple displacement transducers 16 and the position of intermediate casing 27 of sensor 20
Move data.Computer 1 can control the change of monitoring relevant parameter by programming software, simulate HTHP and well head is lifted
Rise and cement sheath sealing influences result.Heating rod 19, automatic confined pressure pump 3, high-pressure air source 11, interior press pump 38, confined pressure sensor
4th, interior pressure sensor 18, pressurized air source pressure sensor 14, gas flowmeter 31, multiple temperature sensors 20 and multiple displacements
Sensor 16 can be connected by data acquisition lines with computer 1, can also by the Wireless Telecom Equipments such as bluetooth, GPRS with
Computer 1 is connected.
In embodiment, the experimental provision of cement sheath sealing and sleeve pipe lifting can also include：Cement mortar master control valve 12,
First end is connected with cement mortar holding vessel 10, the second end respectively with the end of high-pressure air source master control valve 13 second, the first control valve 15
First end connects with the first end of the second control valve 9；High-pressure air source master control valve 13, first end is connected with high-pressure air source 11, and second
End is also connected with the first end of the first control valve 15 and the first end of the second control valve 9 respectively；First control valve 15, first end is also with
The first end of two control valve 9 is connected, and the second end is connected with the first annular space 28；Second control valve 9, the second end are connected with the second annular space 6；
The first control valve of gas flowmeter 32, first end are connected with the first annular space 28, and the second end controls with gas flowmeter second respectively
The end and gas flow meter 31 of valve 33 second connects；The second control valve of gas flowmeter 33, first end are connected with the second annular space 6, the
Two ends are also connected with gas flowmeter 31；Internal pressure pump control valve 36, first end are connected with interior press pump 38, the second end and production casing
Inner chamber 30 connects.
When it is implemented, opening and the closing of above-mentioned valve can also be controlled by computer 1, to control high-pressure air source 11
Apply setting confined pressure, control to surface pipe 5 to the first annular space 28 and the second annular space 6 input gases at high pressure, the automatic confined pressure pump 3 of control
Press pump 38 applies setting internal pressure to production casing inner chamber 30 in system.
As shown in figure 1, cement sheath sealing and the experimental provision of sleeve pipe lifting can also include：Positioned at the upper of upper kettle cover 8
Runner 22；Upper runner 22 is connected with condenser pump 26, and condenser pump 26 is used to convey kettle cover 8 in condensation water cooling；Condense pump control valve
25, first end is connected with upper runner 22, and the second end is connected with condenser pump 26.By cooling down the condenser pump 26 of kettle, can prevent
Kettle temperature is too high to cause O-ring seal to fail.
To sum up, cement sheath sealing of the invention and the experimental provision of sleeve pipe lifting by cement mortar holding vessel to the first ring
Empty and the second annular space injection cement mortar simulated formation geological environment, heating liquid is heated to design temperature by heating rod, passed through
Automatic confined pressure pump applies setting confined pressure to surface pipe, applies setting internal pressure to production casing inner chamber by interior press pump, passes through height
Pressurized air source inputs gases at high pressure to the first annular space and the second annular space, passes through confined pressure sensor, interior pressure sensor, high-pressure air source pressure
Sensor, gas flowmeter, temperature sensor and displacement transducer carry out data acquisition, and well head is lifted so as to simulate HTHP
Rise and cement sheath sealing influences result.The embodiment of the present invention can also be simulated by the change of computer monitor relevant parameter
Go out HTHP influences result to well head lifting and cement sheath sealing, cools down kettle by condenser pump, prevents kettle temperature mistake
Height causes O-ring seal to fail.
Based on same inventive concept, the embodiment of the present invention additionally provides the experiment of a kind of cement sheath sealing and sleeve pipe lifting
Method, as described in example below.Because this method solves the principle of problem and cement sheath sealing and the experiment of sleeve pipe lifting
Device is similar, therefore the implementation of this method may refer to the experimental provision of cement sheath sealing and sleeve pipe lifting, repeats part not
Repeat again.
Fig. 2 is the flow chart of cement sheath sealing and the experimental method of sleeve pipe lifting in the embodiment of the present invention.Such as Fig. 2 institutes
Show, this method can include：
Step 101：To the injection heating liquid of production casing inner chamber 30, cement mortar holding vessel 10 is to the first annular space 28 and the second ring
Sky 6 fills cement mortar, the heating of heating rod 19 heating liquid to design temperature；
Step 102：Automatic confined pressure pump 3 applies setting confined pressure to surface pipe 5, and interior press pump 38 is applied to production casing inner chamber 30
Add and determine internal pressure；
Step 103：The very first time of setting maintenance cement sheath sealing and the experimental provision of sleeve pipe lifting, until cement mortar
The cement sheath being cemented to is cemented to an entirety with surface pipe 5, intermediate casing 27 and production casing 29；
Step 104：Multiple displacement transducers 16 gather the displacement data of production casing 29 and intermediate casing 27；
Step 105：Close the order heating liquid temperature degree of heating rod 9 and be down to normal temperature, in the process, multiple displacement transducers 16 are adopted
Displacement data, the multiple temperature sensors 20 of collection production casing 29 and intermediate casing 27 gather multiple temperature datas, until production
The displacement data of sleeve pipe 29 and intermediate casing 27 is constant；
Step 106：High-pressure air source 11 inputs gases at high pressure to the first annular space 28 and the second annular space 6；
Step 107：High-pressure air source pressure sensor 14 gathers high-pressure air source pressure data, and gas flowmeter 31 measures respectively
The gas flow data of first annular space 28 and the second annular space 6.
When it is implemented, step 101 can include：With O-shaped sealing rubber ring sealed groove, by production casing 29, middle
Corresponding to sleeve pipe 27 and the lower kettle seat 35 of the insertion of simulated formation 5 in groove, coordinate with upper kettle cover 8 and assemble.Injected in cannula cavity 30
Liquid is heated, heating liquid can be water or oil.From the central tripping in heating rod 19 of upper kettle cover 8, fixing seal.In cement mortar holding vessel 10
According to certain proportioning configure cement mortar.Wherein, the proportioning of each composition of cement mortar can need any adjustment according to experiment.Beat
Boiling water mud master control valve 12, the first control valve 15 and the second control valve 9, by cement mortar holding vessel 10 to the first annular space 28 with
The cement mortar that the injection of second annular space 6 has configured, show that cement mortar has been noted when thering is cement mortar to overflow and overflowed in pipeline from liquid storage
It is full, close cement mortar master control valve 12.
When it is implemented, the temperature data for the temperature sensor 20 that heating rod 19 is heated in production casing 29 can be
122 DEG C, to simulated formation temperature；Automatic confined pressure pump 3 can apply 60Mpa confined pressure to surface pipe 5；Press pump control in opening
Valve 36 processed makes interior press pump 38 apply setting internal pressure to production casing inner chamber 30.By step 105 and 106, HTHP pair is drawn
Well head lifting influences result.
When it is implemented, step 107 can include：The and gas flow meter first of high-pressure air source master control valve 13 is first opened to control
Valve 32 processed, the gas flow of now the first annular space 28 is recorded by gas flowmeter 31.Gas flowmeter first is then shut off to control
Valve 32 processed, the second control valve of gas flowmeter 33 is opened, the gas stream of now the second annular space 6 is recorded by gas flowmeter 31
Amount.By step 107, show that HTHP influences result to cement sheath sealing.
This method can also include：After step 101- steps 108 are performed, step 201- steps 205 are continued executing with：
Step 201：After computer 1 controls heating heating liquid to the design temperature of heating rod 9, when continuous heating second is set
Between.
Step 202：Close the order heating liquid temperature degree of heating rod 9 and be down to normal temperature, in the process, multiple displacement transducers 16 are adopted
Displacement data, the multiple temperature sensors 20 of collection production casing 29 and intermediate casing 27 gather multiple temperature datas, until production
The displacement data of sleeve pipe 29 and intermediate casing 27 is constant；
Step 203：High-pressure air source 11 inputs gases at high pressure to the first annular space 28 and the second annular space 6；
Step 204：High-pressure air source pressure sensor 14 gathers high-pressure air source pressure data, and gas flowmeter 31 measures respectively
The gas flow data of first annular space 28 and the second annular space 6.
Step 205：Circulation step 201- steps 204, until the gas flow data of the first annular space 28, the second annular space 6
The displacement data of gas flow data, the displacement data of production casing 29 and intermediate casing 27 no longer changes.
Gas flow data, the displacement number of production casing 29 of gas flow data, the second annular space 6 when the first annular space 28
When no longer being changed according to the displacement data with intermediate casing 27, show that cement sheath has completely disengaged surface pipe 5, intermediate sleeve
Pipe 27 and production casing 29, cement sheath seal failure.
By step 201- steps 205, the gas flow data of multigroup first annular space 28, the second annular space 6 can be obtained
The displacement data of gas flow data, the displacement data of production casing 29 and intermediate casing 27.The above-mentioned multi-group data of com-parison and analysis,
Steam soak can be obtained influences result to well head lifting and cement sheath sealing, show that cement sheath sealing and well head lifting become
Law.
In embodiment, the experimental method of the experimental provision of cement sheath sealing and sleeve pipe lifting can also include：Control adds
The heating heating of hot pin 19 liquid, the automatic confined pressure pump 3 of control apply setting confined pressure to surface pipe 5, and press pump 38 covers to production in control
Tube cavity 30 applies setting internal pressure, gathers the confined pressure data from confined pressure sensor 4, the internal pressure number from interior pressure sensor 18
According to, the high-pressure air source pressure data from high-pressure air source pressure sensor 14, the first annular space 28 from gas flowmeter 31 with
The gas flow of second annular space 6, multiple temperature datas from multiple temperature sensors 20 and from multiple displacement transducers
16 production casing 29 and the displacement data of intermediate casing 27.When it is implemented, it can be held using the application software of computer 1
The above-mentioned function of row.Application software can use Visual Basic6.0 to program.After the completion of experiment, computer 1 can be exported directly
Data sheet.
In embodiment, the experimental method of the experimental provision of cement sheath sealing and sleeve pipe lifting can also include：Convey cold
The upper kettle cover 8 of condensate cooling.
The key technical indexes of the present invention is as follows：
1) experimental temperature：- 220 DEG C of normal temperature；
2) internal pressure：0-15Mpa；
3) confined pressure：0-60Mpa；
4) production casing size：7 inches, wall thickness 8.05mm, length 500mm；
6) intermediate casing size：9.625 inches, wall thickness 9.19mm, length 500mm；
7) surface pipe size：13.375 inches, wall thickness 12.09mm, length 500mm；
8) pressure sensor：The range of annular fluid pressure sensor, confined pressure sensor and high-pressure air source pressure sensor
It is 70MPa, the range of interior pressure sensor is 20MPa；Sensor sensitivity is 0.27%FS；
9) sleeve surface roughness：0.2.
Wherein, normal temperature can be 25 DEG C.
To sum up, cement sheath sealing of the invention and the experimental method of sleeve pipe lifting are to production casing inner chamber injection heating liquid
Fluid in analog casing, cement mortar simulated formation geology is injected to the first annular space and the second annular space by cement mortar holding vessel
Environment, heating liquid is heated to design temperature by heating rod, setting confined pressure is applied to surface pipe by automatic confined pressure pump, passed through
Interior press pump applies setting internal pressure to production casing inner chamber, and high pressure gas is inputted to the first annular space and the second annular space by high-pressure air source
Body, passed by confined pressure sensor, interior pressure sensor, high-pressure air source pressure sensor, gas flowmeter, temperature sensor and displacement
Sensor carries out data acquisition, influences result to well head lifting and cement sheath sealing so as to simulate HTHP, draws cement sheath
Sealing and well head lifting changing rule, reliable theoretical foundation is provided for the analysis of oil field production risk.
Particular embodiments described above, the purpose of the present invention, technical scheme and beneficial effect are carried out further in detail
Describe in detail it is bright, should be understood that the foregoing is only the present invention specific embodiment, the guarantor being not intended to limit the present invention
Scope is protected, within the spirit and principles of the invention, any modification, equivalent substitution and improvements done etc., should be included in this
Within the protection domain of invention.
Claims (10)
1. a kind of cement sheath sealing and the experimental provision of sleeve pipe lifting, it is characterised in that including：
Kettle, there are multiple sleeve pipes inside kettle, including：
Confined pressure chamber (2) is formed between surface pipe (5), with clamper shell (39)；
Positioned at surface pipe (5) is internal, the intermediate casing (27) that is coaxially nested with surface pipe (5), and with surface pipe (5) shape
Into the second annular space (6)；
Positioned at intermediate casing (27) inside, the production casing (29) being coaxially nested with intermediate casing (27), and and intermediate casing
(27) the first annular space (28) is formed；
Cement sheath sealing and the experimental provision of sleeve pipe lifting also include：
Cement mortar holding vessel (10), for injecting cement mortar to the first annular space (28) and the second annular space (6)；
Heating rod (19), production casing inner chamber (30) is lowered into, for heating heating liquid to design temperature；
The automatic confined pressure pump (3) being connected with confined pressure chamber (2), for applying setting confined pressure to surface pipe (5)；
Confined pressure sensor (4) between confined pressure chamber (2) and automatic confined pressure pump (3), for gathering confined pressure data；
The interior press pump (38) being connected with production casing inner chamber (30), apply setting internal pressure to production casing inner chamber (30)；
The interior pressure sensor (18) internal positioned at production casing (29), for gathering internal pressure data；
High-pressure air source (11), for inputting gases at high pressure to the first annular space (28) and the second annular space (6)；
Positioned at high-pressure air source pressure sensor (14) of the high-pressure air source (11) between kettle, for gathering high-pressure air source number pressure
According to；
Production casing inner chamber (30), the first annular space (28) and the second annular space (6) are inserted with temperature sensor (20), for gathering temperature
Degrees of data；
Be all connected with displacement transducer (16) on production casing (29) and intermediate casing (27), for gather production casing (29) and in
Between sleeve pipe (27) displacement data；
Gas flowmeter (31), for measuring the gas flow of the first annular space (28) and the second annular space (6) respectively.
2. cement sheath sealing according to claim 1 and the experimental provision of sleeve pipe lifting, it is characterised in that also include：
Respectively with heating rod (19), automatic confined pressure pump (3), high-pressure air source (11), interior press pump (38), interior pressure sensor (18), enclose
Pressure sensor (4), high-pressure air source pressure sensor (14), gas flowmeter (31), multiple temperature sensors (20) and multiple
The computer (1) of displacement transducer (16) connection, for controlling heating rod (19) heating heating liquid, the automatic confined pressure pump (3) of control
Apply setting confined pressure to surface pipe (5), control high-pressure air source (11) inputs high pressure to the first annular space (28) and the second annular space (6)
Gas, press pump (38) applies setting internal pressure, confined pressure of the collection from confined pressure sensor (4) to production casing inner chamber (30) in control
Data, the internal pressure data from interior pressure sensor (18), the high-pressure air source number pressure from high-pressure air source pressure sensor (14)
According to, the first annular space (28) from gas flowmeter (31) with the gas flow of the second annular space (6), from multiple temperature sensors
(20) multiple temperature datas and the production casing from multiple displacement transducers (16) (29) and intermediate casing (27) it is more
Individual displacement data.
3. cement sheath sealing according to claim 1 and the experimental provision of sleeve pipe lifting, it is characterised in that also include：
Cement mortar master control valve (12), first end are connected with cement mortar holding vessel (10), the second end respectively with high-pressure air source master control
The end of valve (13) second processed, the first control valve (15) first end connect with the second control valve (9) first end；
High-pressure air source master control valve (13), first end are connected with high-pressure air source (11), the second end also respectively with the first control valve
(15) first end connects with the second control valve (9) first end；
First control valve (15), first end are also connected with the second control valve (9) first end, and the second end connects with the first annular space (28)
Connect；
Second control valve (9), the second end are connected with the second annular space (6)；
The control valve of gas flowmeter first (32), first end are connected with the first annular space (28), the second end respectively with gas flowmeter
The end and gas flow meter (31) of second control valve (33) second connects；
The control valve of gas flowmeter second (33), first end are connected with the second annular space (6), the second end also with gas flowmeter (31)
Connection；
Internal pressure pump control valve (36), first end are connected with interior press pump (38), and the second end is connected with production casing inner chamber (30).
4. cement sheath sealing according to claim 1 and the experimental provision of sleeve pipe lifting, it is characterised in that also include：
Kettle includes upper kettle cover (8) and lower kettle seat (35)；
Have multiple grooves facing each other on upper kettle cover (8) and lower kettle seat (35), for insert respectively surface pipe (5), in
Between sleeve pipe (27) and production casing (29).
5. cement sheath sealing according to claim 4 and the experimental provision of sleeve pipe lifting, it is characterised in that also include：
Multiple sealing rings, for sealing multiple grooves.
6. cement sheath sealing according to claim 4 and the experimental provision of sleeve pipe lifting, it is characterised in that also include：
Upper runner (22) positioned at upper kettle cover (8)；
Upper runner (22) is connected with condenser pump (26), and condenser pump (26) is used to convey kettle cover (8) in condensation water cooling；
Pump control valve (25) is condensed, first end is connected with upper runner (22), and the second end is connected with condenser pump (26).
7. cement sheath sealing according to claim 1 and the experimental provision of sleeve pipe lifting, it is characterised in that heating liquid is
Oil or water.
8. the experimental method of a kind of any cement sheath sealing of claim 1-7 and the experimental provision of sleeve pipe lifting, it is special
Sign is, including：
To production casing inner chamber (30) injection heating liquid, cement mortar holding vessel (10) is to the first annular space (28) and the second annular space (6)
Fill cement mortar；
Heating rod (19) heating heats liquid to design temperature；
Automatic confined pressure pump (3) applies setting confined pressure to surface pipe (5), and interior press pump (38) applies to production casing inner chamber (30) to be set
Determine internal pressure；
The very first time of setting maintenance cement sheath sealing and the experimental provision of sleeve pipe lifting, until the cement that cement mortar is cemented to
Ring is cemented to an entirety with surface pipe (5), intermediate casing (27) and production casing (29)；
Multiple displacement transducer (16) collection production casings (29) and the displacement data of intermediate casing (27)；
Close heating rod (9) order heating liquid temperature degree and be down to normal temperature, in the process, multiple displacement transducer (16) collection production sets
Displacement data, the multiple temperature datas of multiple temperature sensors (20) collection of (29) and intermediate casing (27) are managed, until production set
The displacement data for managing (29) and intermediate casing (27) is constant；
High-pressure air source (11) inputs gases at high pressure to the first annular space (28) and the second annular space (6)；
High-pressure air source pressure sensor (14) gathers high-pressure air source pressure data, and gas flowmeter (31) measures the first annular space respectively
(28) with the gas flow data of the second annular space (6).
9. the experimental method of cement sheath sealing according to claim 8 and the experimental provision of sleeve pipe lifting, its feature exist
In, in addition to：
Heating rod (19) heating heating liquid, the automatic confined pressure pump (3) of control is controlled to apply setting confined pressure, control to surface pipe (5)
Interior press pump (38) applies setting internal pressure to production casing inner chamber (30), confined pressure data of the collection from confined pressure sensor (4), comes from
The internal pressure data of interior pressure sensor (18), the high-pressure air source pressure data from high-pressure air source pressure sensor (14), from gas
The first annular space (28) of flowmeter body (31) and the gas flow of the second annular space (6), from the more of multiple temperature sensors (20)
Individual temperature data and production casing (29) and the displacement data of intermediate casing (27) from multiple displacement transducers (16).
10. the experimental method of cement sheath sealing according to claim 8 and the experimental provision of sleeve pipe lifting, its feature exist
In, in addition to：
Kettle cover (8) in conveying condensation water cooling.
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107991165B (en) * | 2017-11-03 | 2020-07-14 | 中国石油大学(北京) | Cement sheath air tightness failure judgment method |
| CN107725030B (en) * | 2017-11-20 | 2023-05-26 | 中国石油大学(华东) | Device and method for evaluating two-interface maintenance and cementing quality of well cementation under disturbance of formation water |
| CN111042801A (en) * | 2019-12-03 | 2020-04-21 | 新疆贝肯能源工程股份有限公司 | Device and method for measuring annulus cement slurry weight loss |
| CN111636861B (en) * | 2020-07-14 | 2021-11-02 | 中国石油大学(北京) | Experimental device for well cementation cement sheath sealing integrity real-time supervision |
| CN114109362A (en) * | 2020-09-01 | 2022-03-01 | 中国石油化工股份有限公司 | Device and method for evaluating performance of well cementation cement sheath with multiple cementing surfaces for oil and gas wells |
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