CN202793868U - High-temperature-resisting and high-pressure-resisting foam cement paste strength maintenance slurry cup and maintenance system thereof - Google Patents
High-temperature-resisting and high-pressure-resisting foam cement paste strength maintenance slurry cup and maintenance system thereof Download PDFInfo
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- CN202793868U CN202793868U CN 201220294047 CN201220294047U CN202793868U CN 202793868 U CN202793868 U CN 202793868U CN 201220294047 CN201220294047 CN 201220294047 CN 201220294047 U CN201220294047 U CN 201220294047U CN 202793868 U CN202793868 U CN 202793868U
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Abstract
The utility model relates to a high-temperature-resisting and high-pressure-resisting foam cement paste strength maintenance slurry cup and a maintenance system thereof. The system comprises a foam cement paste high-temperature-resisting and high-pressure-resisting maintenance slurry cup, a foam cement slurry mixing slurry cup and an under-pressure pipeline, wherein the mixing slurry cup is used for carrying out foam cement paste foaming and slurry mixing by the under-pressure pipeline; then the premixed foam cement paste is input into the maintenance slurry cup by pressure to carry out strength maintenance on cement stones; the maintenance slurry cup is arranged into an under-pressure structure and is used for simulating an underground high-temperature and high-pressure environment; and the under-pressure structure is arranged to be provided with a piston structure in the slurry cup. According to the high-temperature-resisting and high-pressure-resisting foam cement paste strength maintenance slurry cup and the maintenance system thereof, the problem of evaluating and simulating a strength development tendency rule of the foam cement stones under a complicated condition in a lab is solved; and the guide effect of preferably selecting a physical foaming agent and having a well cementation effect on foam cement paste is realized.
Description
Technical field
The utility model belongs to low-density well cementing field, oil field, relates in particular to a kind of foam slurry intensity maintenance of equipment of artificial ground.
Background technology
Foamed cement refers to sneak into a certain amount of foam in conventional grout, the heterogeneous system that forms the solid, liquid, gas three-phase and have high dispersion.The foamed cement well cementation mainly is to reduce cement slurry density, thereby reduces the fluid column pressure of annular space grout section, misses problem with the well cementation that solves the low pressure and easy leaking oil reservoir, and plays the effect of protection oil reservoir.Although foam slurry just was used to building trade before more than 50 years, but the oil well foam slurry still proposes first at Aldrich and the Mitchell by the U.S. in 1975,1984, the people such as Smith are in the deep water area of Canadian east coast, use foamed cement to cement the well, successfully realized the disposable well cementing operation on long sealing, leakage stratum.At home, the research of using foamed cement to carry out cementing operation is started from 1985, in succession be able to research and development in each oil field subsequently, in addition along with foaming and the surely development of bubble technology, and the raising of cementing unit performance, so that the foamed low density cementing technique is developed rapidly.
Foam slurry mainly comprises now: physical blowing machinery mixes and the chemical reaction foaming.Physical mechanical foaming be divided into again with foam send out in advance then with cement slurrypump before mix and behind the cementing truck pump, fill nitrogen both modes that foams, chemical blowing is that gas-development agent and foam stabilizer are sneaked into respectively in ash sample and the with slurry water, and both produce bubble because of chemical reaction in the process of cementing operation.Generate nitrogen with chemical reaction and compare, it is high that the intensity of mechanical nitrogen charging foamed cement is obviously wanted.Because contain strong oxidizer in the grout of chemical blowing, can produce destruction to the overall performance of Behavior of Hardened Cement Paste.And because chemical agent nitrite and the ammonia of chemical blowing have corrosivity and toxicity, it is complicated that nitrite and oxygenant and grout add agent interactively each other, do not open so promote.
Development along with the foam cementing technology, although domestic foam cementing technology is launched at the scene, but indoor research to foam slurry also only limits to theoretically the performance impact rule of foam slurry be studied, to the laboratory study most critical of the physical blowing of foam slurry is the condition of the High Temperature High Pressure under the simulation well, in foam cementing cementing practice process, all there is certain pressure in flowing of foam slurry, and the impact that all is stressed of the volume of foam slurry and variable density, therefore to measure really the performance of on-the-spot foam slurry, need under airtight condition with pressure, to carry out.The mode that the machinery notes nitrogen mode of present indoor employing produces foam mostly is the mechanical raking foaming, it is that expanding foam solution is poured in the stirring arm cup, then shear expanding foam solution with the blade of stirring machine, by agitated liquid in gas (referring generally to nitrogen), gas stirred in the liquid and produce foam, relevant apparatus by grout and foams mix, adopt foam in situation with pressure, to produce, in airtight container, mix with grout, and the High Temperature High Pressure maintenance slurry cup that the injection this patent is mentioned under the effect of pressure, put into the mode that the high temperature and pressure protective cauldron of hardened oilwell cement intensity evaluation carries out maintenance, foam slurry maintenance moulding within certain length of time, then the demoulding, intensity and the permeability variation rule of mensuration foam water mudstone, the application of promoting foam slurry for the scene has guiding effect.
The utility model content
The utility model is in order to solve the technical matters that exists in the prior art, a kind of high temperature high voltage resistant foam slurry intensity maintenance slurry cup and curing system thereof have been proposed, this device can solve the problem of the rule of complex condition foam water mudstone strength development trend under the laboratory evaluation simulation well, for preferred physical blowing agent with carry out now foam slurry well cementation effect and have directive function.
The technical solution of the utility model is
Described maintenance slurry cup comprises slurry cup 1, base 2, threeway valve rod 8, piston 3, piston seat 10 and the standby screw rod 12 of pressing; Described threeway valve rod 8 arranges in the base 2, and is provided with horizontal inlet and base seal screw 13 at described valve rod 8; Described piston 3 is arranged in described slurry cup 1 inner chamber; Described standby screw rod 12 1 ends of pressing are connected with piston 3 contacts by I shape piston seat 10, and the other end passes connecting rod 4 by the spiral shell button, and handle is arranged on outside the described slurry cup 1, is used for controlled pressure.
In order to cooperate the band laminated structure, described maintenance slurry cup also comprises one group of fixture and one group of seal; Described fixture comprises base 2, base support nut 14, piston blot 9, piston baffle ring 11, connecting rod 4 and connecting rod screw 5; Described seal comprises base seal screw 13, O RunddichtringO 15, the O RunddichtringO 6 of base 2 and the O RunddichtringO 7 of piston 3;
Described slurry cup 1 is tightly connected with base 2 screw threads, and seals by the O RunddichtringO 6 of base 2; Described threeway valve rod 8 is arranged in the described base 2, and described threeway valve rod 8 is arranged in the described base 2, and the switching by the described threeway valve rod 8 of described base seal screw 13 controls, the described threeway valve rod 8 of described O RunddichtringO 15 sealings; Described piston blot 9 is tightly connected with described piston 3 spiral shell buttons, and described piston is by the O RunddichtringO 7 and described slurry cup 1 inner wall sealing of piston 3; Described piston baffle ring 11 is arranged on the top of slurry cup 1, and is fixed in the slurry cup 1 by screw thread, and described connecting rod 4 is affixed with described slurry cup 1 wall by connecting rod screw 5.
Described system also comprises a high temperature and high pressure kettle, and described maintenance slurry cup is put into described high temperature and high pressure kettle and carried out the intensity maintenance.
In the concrete application, described pressure limit is controlled at 0.3-0.5MPa.
Described piston 3 diameter 30-60mm; The height 150-250mm of slurry cup 1; Thickness 12-20mm, and described slurry cup proof pressure is 25-35MPa.
Another inventive point of the utility model is, a kind of High Temperature High Pressure foam slurry intensity curing system that comprises maintenance slurry cup, and described system comprises foam slurry high temperature high voltage resistant intensity maintenance slurry cup, foam slurry is mixed and starches cup and pipeline with pressure; The described slurry cup that is mixed carries out foam slurry foaming and mixed slurry under described pipeline with pressure; With in the described maintenance slurry of the input with pressure of foam slurry behind the premix cup, Behavior of Hardened Cement Paste is carried out the intensity maintenance afterwards;
Described pipeline with pressure comprises the elevated pressure nitrogen gas tank, high pressure line and operation valve; The described slurry cup that is mixed foams under the pressurized environment of described pipeline with pressure and mixes slurry.
Described pressure limit is controlled at 0.3-0.5MPa.
Described system also comprises a high temperature and high pressure kettle, and described maintenance slurry cup is put into described high temperature and high pressure kettle and carried out the intensity maintenance.
Described piston 3 diameter 30-60mm; The height 150-250mm of slurry cup 1; Thickness 12-20mm, and described slurry cup 1 proof pressure is 25-35MPa.
High temperature high voltage resistant foam slurry curing means of the present utility model by cylinder, bottom, be added with standby loam cake and rapid conversion joint of pressing with the piston of O-ring seal and form.
Characteristics of the present utility model are as follows:
(1) the cup cylinder all adopts corrosion-resistant, anti abrasive stainless steel material, with the energy high temperature high voltage resistant;
(2) bowl cover characteristics up and down: multifibres button, the pressure of ability 25-35M Pa, upper bowl cover are the hollow baffle ring that withstands piston, and lower bowl cover has one with three stainless steel covers of grabbing base;
(3) piston material is selected the stainless steel material that is added with the upper-lower seal circle, piston diameter 30-60mm, the bottom of slurry cup and moving piston all adopt the sealing of O type circle, and piston has adopted the double seal mode to guarantee the seals of piston in the process of motion especially, can guarantee effectively that the slurry cup can be high pressure resistant, and the same employing of O-ring seal is the modified rubber of high temperature resistance.
(4) pressure preparation system is by piston seat, and for pressing screw rod, connecting rod forms, apply stable standby the pressure can for the grout in the slurry cup, by walking bar rod, withdraw from screw mandrel, slow release is standby presses, and screw mandrel rate travel 1-3mm/s makes foam slurry can slowly evenly inject sampler;
(5) straight cup cylinder height 150-250mm; Thickness 12-20mm, piston just in time is the height that thermopair can contact to the design height at top, when carrying out the High Temperature High Pressure maintenance, can guarantee that the temperature that thermopair records is consistent with the temperature of slurry cup inner foam grout maintenance;
(6) compression system that is used consists of foam slurry by high-pressure nitrogen bottle, high pressure line, air release and stop valve environment with pressure is provided.
Complete by the foam water mudstone volume after the maintenance of foam slurry High Temperature High Pressure maintenance slurry cup, the phenomenon of volumetric contraction does not appear, and be 1.5g/cm for density
3Behavior of Hardened Cement Paste, measuring its 48h compressive strength is 12.4MPa, corresponding permeability is 0.058md, foam water mudstone with respect to ordinary pressure curing, the compressive strength of the Behavior of Hardened Cement Paste after the High Temperature High Pressure maintenance is larger, and permeability is lower, can reflect truly that Behavior of Hardened Cement Paste is in the performance of down-hole.
Description of drawings
Fig. 1 is the external structure synoptic diagram of foam slurry high temperature high voltage resistant intensity maintenance slurry cup;
Fig. 2 is the external elevational structural representation of foam slurry high temperature high voltage resistant intensity maintenance slurry cup;
Fig. 3 is the inner structure synoptic diagram of foam slurry high temperature high voltage resistant intensity maintenance slurry cup.
Be illustrated in connection with utility model content and embodiment
Among the figure, 1-starches cup; The 2-base; The 3-piston; The 4-connecting rod; The 5-screw; 6-O type circle; 7-O type circle; 8-threeway valve rod; The 9-screw; The 10-piston seat; The 11-piston baffle ring; The standby screw rod of pressing of 12-; 13-base seal screw; 14-base support nut; 15-O type circle.
Embodiment
Described maintenance slurry cup comprises slurry cup 1, threeway valve rod 8, piston 3, piston seat 10 and the standby screw rod 12 of pressing; Described threeway valve rod 8 is arranged in the described slurry cup base 2, and is provided with horizontal inlet and bottom end seal mouth at described threeway valve rod 8; Described piston 3 is arranged in described slurry cup 1 inner chamber; Described standby screw rod 12 1 ends of pressing press screw rod 12 contacts to connect with being connected in piston 3 by I shape piston seat 10, and the other end passes connecting rod 4 by the spiral shell button, and handle is arranged on outside the described slurry cup 1, is used for controlled pressure.
In order to cooperate the band laminated structure, described maintenance slurry cup also comprises one group of fixture and one group of seal; Described fixture comprises base 2, base support nut 14, piston blot 9, piston baffle ring 11, connecting rod 4 and connecting rod screw 5; Described seal comprises base seal screw 13, O RunddichtringO 15, the O RunddichtringO 6 of base 2 and the O RunddichtringO 7 of piston 3;
Described slurry cup 1 is tightly connected with base 2 screw threads, and seals by the O RunddichtringO 6 of base 2; Described threeway valve rod 8 is arranged in the described base 2, and seals by the O RunddichtringO 15 of threeway valve rod 8; Piston blot 9 and piston 3 are tightly connected by the spiral shell button, and described piston seat 10 passes through I shape piston 3 and is connected the connection of pressure screw rod contact, and convenient standby pressure screw rod is in piston seat 10 rotations and can not unscrew piston blot 9.And described piston is by the O RunddichtringO 7 and described slurry cup 1 inner wall sealing of piston 3; Described piston baffle ring 11 is arranged on the top of slurry cup 1, and is fixed in the slurry cup 1 by screw thread, and described connecting rod 4 is buckled affixed by connecting rod screw 5 and described slurry cup 1 wall spiral shell.
Described piston 3 diameter 30-60mm; The height 150-250mm of slurry cup 1; Thickness 12-20mm, and described slurry cup proof pressure is 25-35MPa.
Foam slurry high temperature high voltage resistant intensity maintenance slurry cup is cooperating the foam slurry slurry cup that is mixed to use, need to consist of foam slurry by high-pressure nitrogen bottle, high pressure line, air release and stop valve in addition environment with pressure is provided, be mixed slurry cup of foam slurry foams under the pressure that compression system improves and mixes slurry, in advance 2-base and 11-piston baffle are all tightened good seal, the 4-connecting rod fixes by 5-screw and 1-slurry cup, the screw thread that the 2-base utilizes and 1-slurry cup good seal, the bottommost that is positioned at the slurry cup of piston during the experiment beginning.Pre-mixed after by with pressure pipeline the horizontal access of foam slurry by threeway 8-valve rod being entered in the maintenance slurry cup, because the pressure in the slurry cup is less than compression system, foam slurry can enter in the slurry cup and pushing piston moves up by valve rod, to manually control the standby speed that retreats of screw rod of pressing of 12-for the control piston rate travel and guarantee that foam slurry can inject in the slurry cup uniformly, when 3 piston tops during to the position of 11-piston baffle, disconnect the outer rapid-acting coupling of described threeway valve rod 8 horizontal access and the bottom end seal nut screwing clamping is closed three-way valve; Turning on nut 5 also will be for pressing screw rod 12 and connecting rod 4 take off.
Example 1:
In the mixed slurry cup of foam slurry, cement based pulp density 1.88g/cm
3, foam is produced by the expanding foam solution high speed shear that contains 0.3% gas-development agent.Foam and grout are mixed as 5: 100 take mass ratio, pressure by compression system raising 0.3-0.5MPa will mix the interior foam slurry of slurry cup by rapid conversion joint injection High Temperature High Pressure maintenance slurry cup, the process of injecting, regulate simultaneously the standby screw rod of pressing, it is even that assurance enters High Temperature High Pressure maintenance slurry cup inner foam grout, there is not free gas to enter, the integrality of the Behavior of Hardened Cement Paste after the assurance maintenance.
Example 2
In the mixed slurry cup of foam slurry, cement based pulp density 1.89g/cm
3, foam is produced by the expanding foam solution high speed shear that contains 0.3% gas-development agent.Foam and grout are mixed as 3: 100 take mass ratio, pressure by compression system raising 0.3-0.5MPa will mix the interior foam slurry of slurry cup by rapid conversion joint injection High Temperature High Pressure maintenance slurry cup, the process of injecting, regulate simultaneously the standby screw rod of pressing, it is even that assurance enters High Temperature High Pressure maintenance slurry cup inner foam grout, there is not free gas to enter, the integrality of the Behavior of Hardened Cement Paste after the assurance maintenance.
Table 1: example 1 contrast and experiment
Table 2: example 2 contrast and experiment
Claims (6)
1. cup is starched in a high temperature high voltage resistant foam slurry intensity maintenance, it is characterized in that:
Described maintenance slurry cup comprises slurry cup (1), threeway valve rod (8), piston (3), piston seat (10) and the standby screw rod (12) of pressing; Described threeway valve rod (8) is arranged in the described slurry cup base (2), and is provided with horizontal inlet and bottom end seal mouth at described threeway valve rod (8); Described piston (3) is arranged in described slurry cup (1) inner chamber; Described standby screw rod (12) one ends of pressing are connected 3 by described piston seat (10) with piston) the contact connection;
Described maintenance slurry cup is set to be with laminated structure; Described band laminated structure adopts in the slurry cup piston structure is set.
2. cup is starched in a kind of high temperature high voltage resistant foam slurry intensity maintenance according to claim 1, it is characterized in that:
Described maintenance slurry cup also comprises one group of fixture and one group of seal; Described fixture comprises base (2), base support nut (14), piston blot (9), piston baffle ring (11), connecting rod (4) and connecting rod screw (5); Described seal comprises base seal screw (13), the O RunddichtringO (15) of threeway valve rod (8), the O RunddichtringO (6) of base (2) and the O RunddichtringO (7) of piston (3);
Described slurry cup (1) is tightly connected with base (2) screw thread, and seals by O RunddichtringO (6) by base (2); Described threeway valve rod (8) is arranged in the described base (2), and the switching by the described threeway valve rod of described base seal screw (13) control (8), described O RunddichtringO (15) sealing described threeway valve rod (8); Described piston blot (9) and piston (3) are affixed by the spiral shell button, and described piston is by the O RunddichtringO (7) and described slurry cup (1) inner wall sealing of piston (3); Described piston baffle ring (11) is arranged on the top of slurry cup (1), and is fixed in the slurry cup (1) by screw thread, and described connecting rod (4) is affixed with described slurry cup (1) wall by connecting rod screw (5);
Described standby screw rod (12) one ends of pressing are connected 3 by described piston seat (10) with piston) the contact connection, the other end passes connecting rod (4) by the spiral shell button, and the described standby handle of screw rod (12) of pressing is arranged on outside the described slurry cup (1), is used for controlled pressure.
3. a kind of high temperature high voltage resistant foam slurry intensity maintenance slurry cup according to claim 1 is characterized in that: described piston (3) diameter 30-60mm; The height 150-250mm of slurry cup (1); Thickness 12-20mm, and described slurry cup (1) proof pressure is 25-35MPa.
4. high temperature high voltage resistant foam slurry intensity curing system that comprises claim 1 or 2 described maintenances slurry cup is characterized in that:
Described system comprises foam slurry high temperature high voltage resistant intensity maintenance slurry cup, and foam slurry is mixed and starches cup and pipeline with pressure; The described slurry cup that is mixed carries out foam slurry foaming and mixed slurry under described pipeline with pressure; With in the described maintenance slurry of the input with pressure of foam slurry behind the premix cup, Behavior of Hardened Cement Paste is carried out the intensity maintenance afterwards;
Described pipeline with pressure comprises the elevated pressure nitrogen gas tank, high pressure line and operation valve; The described slurry cup that is mixed foams under the pressurized environment of described pipeline with pressure and mixes slurry.
5. a kind of high temperature high voltage resistant foam slurry intensity curing system according to claim 4 is characterized in that:
Described pressure limit is controlled at 0.3-0.5MPa.
6. a kind of high temperature high voltage resistant foam slurry intensity curing system according to claim 4 is characterized in that:
Described system also comprises a high temperature and high pressure kettle, and described maintenance slurry cup is put into described high temperature and high pressure kettle and carried out the intensity maintenance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220294047 CN202793868U (en) | 2012-06-19 | 2012-06-19 | High-temperature-resisting and high-pressure-resisting foam cement paste strength maintenance slurry cup and maintenance system thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220294047 CN202793868U (en) | 2012-06-19 | 2012-06-19 | High-temperature-resisting and high-pressure-resisting foam cement paste strength maintenance slurry cup and maintenance system thereof |
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| CN202793868U true CN202793868U (en) | 2013-03-13 |
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| CN 201220294047 Expired - Lifetime CN202793868U (en) | 2012-06-19 | 2012-06-19 | High-temperature-resisting and high-pressure-resisting foam cement paste strength maintenance slurry cup and maintenance system thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104227846A (en) * | 2013-06-21 | 2014-12-24 | 中国石油化工股份有限公司 | Foam cement paste preparation device and application thereof |
| CN105089665A (en) * | 2014-05-14 | 2015-11-25 | 中国石油天然气股份有限公司 | Extraction type polymer solution sampler |
| CN106124741A (en) * | 2016-06-29 | 2016-11-16 | 西南石油大学 | Cement mortar high temperature sedimentary stability test device |
| CN108195737A (en) * | 2017-12-21 | 2018-06-22 | 中国林业科学研究院木材工业研究所 | A kind of gas permeability of wood analysis test apparatus |
-
2012
- 2012-06-19 CN CN 201220294047 patent/CN202793868U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104227846A (en) * | 2013-06-21 | 2014-12-24 | 中国石油化工股份有限公司 | Foam cement paste preparation device and application thereof |
| CN105089665A (en) * | 2014-05-14 | 2015-11-25 | 中国石油天然气股份有限公司 | Extraction type polymer solution sampler |
| CN106124741A (en) * | 2016-06-29 | 2016-11-16 | 西南石油大学 | Cement mortar high temperature sedimentary stability test device |
| CN106124741B (en) * | 2016-06-29 | 2018-04-20 | 西南石油大学 | Cement mortar high temperature sedimentary stability test device |
| CN108195737A (en) * | 2017-12-21 | 2018-06-22 | 中国林业科学研究院木材工业研究所 | A kind of gas permeability of wood analysis test apparatus |
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