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CN107828392A - A kind of HTHP stable type cement mortar - Google Patents

A kind of HTHP stable type cement mortar Download PDF

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Publication number
CN107828392A
CN107828392A CN201711192633.7A CN201711192633A CN107828392A CN 107828392 A CN107828392 A CN 107828392A CN 201711192633 A CN201711192633 A CN 201711192633A CN 107828392 A CN107828392 A CN 107828392A
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CN
China
Prior art keywords
high temperature
retarder
addition
cement mortar
level oil
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201711192633.7A
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Chinese (zh)
Inventor
李仕勇
罗杨
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Chengdu Bosch Technology Co Ltd
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Chengdu Bosch Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Chengdu Bosch Technology Co Ltd filed Critical Chengdu Bosch Technology Co Ltd
Priority to CN201711192633.7A priority Critical patent/CN107828392A/en
Publication of CN107828392A publication Critical patent/CN107828392A/en
Pending legal-status Critical Current

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    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09KMATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K8/00Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
    • C09K8/42Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells
    • C09K8/46Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells containing inorganic binders, e.g. Portland cement
    • C09K8/467Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells containing inorganic binders, e.g. Portland cement containing additives for specific purposes

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  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)

Abstract

The invention discloses a kind of HTHP stable type cement mortar and preparation method thereof, the AMPS solved in retarder class product in the prior art has sulfonic acid group monomer, thus easily hydrolyzed in the high temperature more than 120 DEG C and cement mortar alkaline environment, the problem of causing to settle.The present invention includes G levels oil-well cement, fluid loss agent, micro- silicon, high temperature retarder and water;The addition of micro- silicon is the 35 50% of G level oil-well cements, and the addition of fluid loss agent is the 0.5 1% of G level oil-well cements, and the addition of high temperature retarder is the 2 5% of G level oil-well cements, and the addition of water is the 50 60% of G level oil-well cements.It is of the invention effectively to avoid the contradiction that normal temperature thickens and high temperature settles, and retarder dosage and thickening time can also be made linear, and then realize thickening time adjustable effect.

Description

A kind of HTHP stable type cement mortar
Technical field
The present invention relates to cement field, and in particular to a kind of HTHP stable type cement mortar.
Background technology
With going deep into for oil-gas exploration, deep-well, ultradeep well, geothermal well well cementation are increasing, at present manufacturer's application both at home and abroad There is fracture, hydrolysis etc. in polymerization species fluid loss agent at most, the retarder strand under generally more than 130 DEG C of hot conditions Situation, cause polymeric to form good absorption and parcel with oil-well cement again, cause cement and extra material Grain causes to settle due to the effect of density contrast.
Fluid loss agent, the retarder class product of current all manufacturers be by AMPS and the polymerization of other functional monomers and Into, and AMPS is the monomer for having sulfonic acid group, in the high temperature more than 120 DEG C and cement mortar alkaline environment (PH >=11) easily Hydrolysis, the sulfonic acid (sodium salt) formed after hydrolysis have strong peptizaiton, further result in cement mortar sedimentation.
Meanwhile high density, VHD cement mortar, low-density, ultralow density cement slurries due to extra material, as heavy weight additive, Palliative etc. and cement and other excessive (examples of extra material density contrast:Oil well G class g cements density is 3.15g/cm3Heavy weight additive density 4.80g/cm3-7.20g/cm3Palliative density 0.80g/cm3-0.24g/cm3), molecular thermalmotion aggravation is same in temperature-rise period Sample causes cement mortar to settle.
The content of the invention
The technical problems to be solved by the invention are:The AMPS in retarder class product has sulfonic acid group in the prior art Monomer, thus easily hydrolyzed in the high temperature more than 120 DEG C and cement mortar alkaline environment, the problem of causing to settle, it is therefore intended that A kind of HTHP stable type cement mortar to solve the above problems is provided.
The present invention is achieved through the following technical solutions:
A kind of HTHP stable type cement mortar, including G levels oil-well cement, fluid loss agent, micro- silicon, high temperature retarder and Water;Characterized in that,
The addition of micro- silicon is the 35-50% of G level oil-well cements, and the addition of fluid loss agent is G level oil-well cements 0.5-1%, the addition of high temperature retarder are the 2-5% of G level oil-well cements, and the addition of water is the 50- of G level oil-well cements 60%;
The high temperature retarder includes:
For the present invention by the optimization of formula, showing chemical inertness under the conditions of being effectively now below 50 DEG C in fact does not influence water The live mixture and note of mud are replaced, and cause the increase of cement mortar viscosity under the hot conditions more than 90 DEG C, are effectively avoided often Temperature thickening and the contradiction of high temperature sedimentation.
Meanwhile the present invention dissolves the rigid macromolecule group at high temperature, it can not only effectively improve cement mortar viscosity, And end group bulky side chain therein can effectively prevent the hydrolysis of AMPS polymer, pass through the dual of the regulation of viscosity and anti-hydrolysis Effect causes sedimentation to be obviously improved, and effect is very notable.
Further, the percentage by weight of monomer is 25%-35% in the high temperature retarder.
Further, the fluid loss agent is NVP.
Further, the addition of micro- silicon is 40-45%.
The present invention compared with prior art, has the following advantages and advantages:
1st, the present invention can effectively be now below showing chemical inertness in fact under the conditions of 50 DEG C and not influence the scene of cement mortar mixing Match somebody with somebody and note and replace, and cause the increase of cement mortar viscosity under the hot conditions more than 90 DEG C, effectively avoid normal temperature thickening and high temperature The contradiction of sedimentation.
2nd, the present invention dissolves the rigid macromolecule group at high temperature, and it can not only effectively improve cement mortar viscosity, and And end group bulky side chain therein can effectively prevent the hydrolysis of AMPS polymer, pass through the dual work of regulation and the anti-hydrolysis of viscosity With causing sedimentation to be obviously improved, effect is very notable.
3rd, cost of the present invention is cheap, and can effectively make retarder dosage and thickening time linear, Jin Ershi Adjustable effect of existing thickening time.
Embodiment
For the object, technical solutions and advantages of the present invention are more clearly understood, with reference to embodiment, the present invention is made Further to describe in detail, exemplary embodiment of the invention and its explanation are only used for explaining the present invention, are not intended as to this The restriction of invention.
Embodiment 1
A kind of HTHP stable type cement mortar, including G levels oil-well cement, fluid loss agent, micro- silicon, high temperature retarder and Water.
The addition of micro- silicon is the 40% of G level oil-well cements, and the addition of fluid loss agent is the 1% of G level oil-well cements, high The addition of warm retarder is the 3% of G level oil-well cements, and the addition of water is the 57% of G level oil-well cements;
The high temperature retarder includes:
The fluid loss agent is NVP.
The present invention specific preparation method be:
Step 1: it is configured to high temperature retarder;
It is Step 2: high temperature retarder, G levels oil-well cement, fluid loss agent and water is well mixed;
Wherein, the preparation method of high temperature retarder is as follows:
By AMPS, acrylamide, itaconic acid, maleic anhydride, acryloyl morpholine, N, N- DMAAs and water mixing Uniformly and pH value of solution is adjusted to after 5.8~6.2, be added in reaction vessel, and N is passed through in reaction vessel2Protection, 40~55 DEG C when add monomer mass 2.0%-3.0% initiator and carry out radical polymerization;Start when being reacted to and reaching maximum temperature point Timing, finished product is obtained after 1~1.5h of timing.Wherein, adjusted in the preparation method of the high temperature retarder BRT-22L by NaOH PH, pH are adjusted to 6.The temperature when initiator adds is 50 DEG C, and the time of timing is 1h.Initiator is ammonium persulfate.
Embodiment 2
The difference of the present embodiment and embodiment 1 is only in the proportioning of the present embodiment high temperature retarder is different, specifically sets Put as follows:
The high temperature retarder includes:
Embodiment 3
The difference of the present embodiment and embodiment 1 is only in the proportioning of the present embodiment high temperature retarder is different, specifically sets Put as follows:
The high temperature retarder includes:
Embodiment 4
The present embodiment is the comparative example of embodiment 1, and the composition of the present embodiment high temperature retarder is different, specific to set It is as follows:
The high temperature retarder includes:
200 DEG C of thickening times (min) of each embodiment are detected, and detect different retarder dosages and thickening time Between corresponding relation, learnt by detection, the retarder dosage of the finished product described in embodiment 4 and be not in line between the thickening time Sexual intercourse, although the problem of normal temperature thickening is not present in the finished product shown in embodiment 4, under the temperature conditionss more than 200 DEG C The problem of being settled with high temperature.The present invention can effectively avoid normal temperature thickening and high temperature to sink simultaneously by the optimization of component and proportioning Drop the problem of, effect is very notable.
Above-described embodiment, the purpose of the present invention, technical scheme and beneficial effect are carried out further Describe in detail, should be understood that the embodiment that the foregoing is only the present invention, be not intended to limit the present invention Protection domain, within the spirit and principles of the invention, any modification, equivalent substitution and improvements done etc., all should include Within protection scope of the present invention.

Claims (4)

  1. A kind of 1. HTHP stable type cement mortar, with weight percentage, including G levels oil-well cement, fluid loss agent, micro- silicon, height Warm retarder and water;Characterized in that,
    The addition of micro- silicon is the 35-50% of G level oil-well cements, and the addition of fluid loss agent is the 0.5- of G level oil-well cements 1%, the addition of high temperature retarder is the 2-5% of G level oil-well cements, and the addition of water is the 50-60% of G level oil-well cements;
    The high temperature retarder includes:
  2. 2. a kind of HTHP stable type cement mortar according to claim 1, it is characterised in that in the high temperature retarder The percentage by weight of monomer is 25%-35%.
  3. 3. a kind of HTHP stable type cement mortar according to claim 1, it is characterised in that the fluid loss agent is N- Vinyl pyrrolidone.
  4. A kind of 4. HTHP stable type cement mortar according to claim 1, it is characterised in that the addition of micro- silicon For 40-45%.
CN201711192633.7A 2017-11-24 2017-11-24 A kind of HTHP stable type cement mortar Pending CN107828392A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201711192633.7A CN107828392A (en) 2017-11-24 2017-11-24 A kind of HTHP stable type cement mortar

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201711192633.7A CN107828392A (en) 2017-11-24 2017-11-24 A kind of HTHP stable type cement mortar

Publications (1)

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CN107828392A true CN107828392A (en) 2018-03-23

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109652037A (en) * 2019-01-15 2019-04-19 中国海洋石油集团有限公司 A kind of high-temperature stable cement slurry and preparation method thereof

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5536311A (en) * 1992-10-02 1996-07-16 Halliburton Company Set retarded cement compositions, additives and methods
CN106833567A (en) * 2017-03-23 2017-06-13 中国石油大学(华东) A kind of high-intensity high-tenacity high temperature resistant well cementing mortar architecture and preparation method thereof and method for designing

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5536311A (en) * 1992-10-02 1996-07-16 Halliburton Company Set retarded cement compositions, additives and methods
CN106833567A (en) * 2017-03-23 2017-06-13 中国石油大学(华东) A kind of high-intensity high-tenacity high temperature resistant well cementing mortar architecture and preparation method thereof and method for designing

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109652037A (en) * 2019-01-15 2019-04-19 中国海洋石油集团有限公司 A kind of high-temperature stable cement slurry and preparation method thereof
CN109652037B (en) * 2019-01-15 2021-11-16 中国海洋石油集团有限公司 High-temperature stable cement slurry and preparation method thereof

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Application publication date: 20180323