CN101126018A - Low-temperature hardening scurry-proof cement slurry for well cementing - Google Patents
Low-temperature hardening scurry-proof cement slurry for well cementing Download PDFInfo
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- CN101126018A CN101126018A CNA2006100892748A CN200610089274A CN101126018A CN 101126018 A CN101126018 A CN 101126018A CN A2006100892748 A CNA2006100892748 A CN A2006100892748A CN 200610089274 A CN200610089274 A CN 200610089274A CN 101126018 A CN101126018 A CN 101126018A
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Abstract
The invention relates to a low temperature early strength channeling control cement slurry, comprising portland cement, water, light strengthening agent, low-temperature early strength agent, channeling control agent, rheological performance adjusting agent and defoaming agent; wherein, the light strengthening agent consists of glass beads, fine cement, fine silicon powder and superfine, high-activity slag; the low-temperature early strengthening agent consists of sodium silicate, calcium sulphate and triethanolamine; the channeling control agent consists of polyvinyl alcohol, gypsum, poly naphthalene sulphonic sodium and borax; the rheological performance adjusting agent consists of sodium polystyrene sulfonate and calcium lignosulfonate; the defoaming agent consists of poly glycol dipropionate ether. The invention has the advantages of fast expanding speed of intensity in low temperature, strong channeling control and leakage resistance performance, low water lost and good rheological performance, and can be used as cementing material in low-temperature air layer, activity water layer and leakiness ground layer.
Description
Technical field
The present invention relates to a kind of low-temperature hardening scurry-proof cement slurry for well cementing, be used in particular for the low temperature gas-bearing formation, enliven water layer, the well cementing material on leakiness stratum.
Background technology
In the existing well cementing operation, there are shallow gas and waterbearing stratum, the face of land, the stratum bearing capacity is low and the winter job temperature is low situation, make the cementitious grout strength development slow, the weightlessness that grout is waited when coagulating causes fluid column pressure to reduce, very easily cause the generation of aqueous vapor channelling, had a strong impact on cementing quality.At the problems referred to above, the method for the existing raising cement slurry density that adopts, its weak point is very easily to cause grout to formation leakage; The existing method that adds setting accelerator such as calcium chloride that adopts can shorten cement slurry thickening time, but can not significantly improve the development of cementitious grout intensity, can not effectively prevent channelling, and volume can produce backward-acting when excessive, brings undesirable action to well cementing operation.
Summary of the invention
The technical problem to be solved in the present invention: avoid above-mentioned deficiency of the prior art, provide that a kind of to be used under low temperature well cementing operation, the low temperature strength development fast, curing time is short, can effectively prevent channelling, prevent to miss, the low-temperature hardening scurry-proof cement slurry for well cementing of reasonable price.
The technical solution used in the present invention: low-temperature hardening scurry-proof cement slurry for well cementing, it is characterized in that by 100 weight part silicate cementing concretes, the 50-95 weight parts water, 10-100 weight part lightweight toughener, 3-8 weight part low-temperature early strength agent, 3-8 weight part anti-migration agent, 0.2-1 weight part rheological property conditioning agent, 0.1-0.3 the weight part defoamer is formed, wherein the lightweight toughener is by the glass microballon of 100 weight part 150-200 μ m, 40-60 weight part 40-100 μ m ultrafine high activity slag, the fine silica flour of 20-30 weight part 0.5-3 μ m fine cement and 10-20 weight part 0.02-0.5 μ m is formed; Low-temperature early strength agent is made up of 100 weight part sulfuric acid calcium powders, 80-100 weight part trolamine, 40-60 weight part water glass; Anti-migration agent is made up of the poly-sodium naphthalene sulfonate of gypsum, 200-300 weight part of 100 weight part 20-80 order polyvinyl alcohol, 150-300 weight part and the borax of 5-10 weight part; The rheological property conditioning agent is made up of 100 weight part sodium polystyrene sulfonates and 80-100 weight part calcium lignin sulphonate; Defoamer is made up of the polyoxyethylene glycol ether.
More excellent low-temperature hardening scurry-proof cement slurry for well cementing, it is characterized in that being made up of 100 weight part silicate cementing concretes, 50 weight parts waters, 10 weight part lightweight tougheners, 4 weight part low-temperature early strength agents, 3 weight part anti-migration agents, 0.2 weight part rheological property conditioning agent, 0.2 weight part defoamer, wherein the lightweight toughener is made up of glass microballon, 50 weight part 40-100 μ m ultrafine high activity slags, 25 weight part 0.5-3 μ m fine cements and the fine silica flour of 15 weight part 0.02-0.5 μ m of 100 weight part 150-200 μ m; Low-temperature early strength agent is made up of 100 weight part sulfuric acid calcium powders, 80 weight part trolamines, 50 weight part water glass; Anti-migration agent is made of the poly-sodium naphthalene sulfonate of gypsum, 200 weight parts of 100 weight part 20-80 order polyvinyl alcohol, 200 weight parts and the borax of 10 weight parts; The rheological property conditioning agent is made up of 100 weight part sodium polystyrene sulfonates and 100 weight part calcium lignin sulphonates; Defoamer is made up of the polyoxyethylene glycol ether.
More excellent low-temperature hardening scurry-proof cement slurry for well cementing, it is characterized in that being made up of 100 weight part silicate cementing concretes, 70 weight parts waters, 50 weight part lightweight tougheners, 4 weight part low-temperature early strength agents, 3 weight part anti-migration agents, 0.5 weight part rheological property conditioning agent, 0.2 weight part defoamer, wherein the lightweight toughener is made up of glass microballon, 50 weight part 40-100 μ m ultrafine high activity slags, 25 weight part 0.5-3 μ m fine cements and the fine silica flour of 15 weight part 0.02-0.5 μ m of 100 weight part 150-200 μ m; Low-temperature early strength agent is made up of 100 weight part sulfuric acid calcium powders, 80 weight part trolamines, 50 weight part water glass; Anti-migration agent is made of the poly-sodium naphthalene sulfonate of gypsum, 200 weight parts of 100 weight part 20-80 order polyvinyl alcohol, 200 weight parts and the borax of 10 weight parts; The rheological property conditioning agent is made up of 100 weight part sodium polystyrene sulfonates and 100 weight part calcium lignin sulphonates; Defoamer is made up of the polyoxyethylene glycol ether.
More excellent low-temperature hardening scurry-proof cement slurry for well cementing, it is characterized in that being made up of 100 weight part silicate cementing concretes, 60 weight parts waters, 30 weight part lightweight tougheners, 4 weight part low-temperature early strength agents, 3 weight part anti-migration agents, 0.5 weight part rheological property conditioning agent, 0.2 weight part defoamer, wherein the lightweight toughener is made up of glass microballon, 50 weight part 40-100 μ m ultrafine high activity slags, 25 weight part 0.5-3 μ m fine cements and the fine silica flour of 15 weight part 0.02-0.5 μ m of 100 weight part 150-200 μ m; Low-temperature early strength agent is made up of 100 weight part sulfuric acid calcium powders, 80 weight part trolamines, 50 weight part water glass; Anti-migration agent is made of the poly-sodium naphthalene sulfonate of gypsum, 200 weight parts of 100 weight part 20-80 order polyvinyl alcohol, 200 weight parts and the borax of 10 weight parts; The rheological property conditioning agent is made up of 100 weight part sodium polystyrene sulfonates and 100 weight part calcium lignin sulphonates; Defoamer is made up of the polyoxyethylene glycol ether.
The preparation process of low-temperature hardening scurry-proof cement slurry for well cementing is as follows:
Prepare each admixture in advance, preparation lightweight toughener grinds 40-100 μ m with the ultrafine high activity slag, evenly makes with the 150-200 μ m glass microballon of fine cement, fine silica flour and airtight, lightweight, inflation is mixed then.
Prepare low-temperature early strength agent in advance, sulfuric acid calcium powder, trolamine, water glass are mixed make.
Prepare anti-migration agent in advance, 20-80 order polyvinyl alcohol, gypsum, poly-sodium naphthalene sulfonate and borax are mixed make.
Prepare the rheological property conditioning agent in advance, sodium polystyrene sulfonate and calcium lignin sulphonate are mixed make.Defoamer adopts commercially available polyoxyethylene glycol ether.
Then cement and lightweight toughener, low-temperature early strength agent, anti-migration agent and rheological property conditioning agent are mixed, last water with the adding defoamer stirs, and makes the low-temperature high-early strength anti-migration grout.
In low-temperature hardening scurry-proof cement slurry for well cementing, the lightweight toughener is by glass microballon and have the high reactivity slag material of reasonable particle size distribution and fine silica flour, fine cement are formed, can not only play the effect of filling water mudstone hole, also have stronger volcanic ash effect simultaneously, absorb the Ca (OH) that hydrated cementitious produces
2, the hydration reaction of further complete cement.High reactivity ultrafine slag and fine silica flour and fine cement are by hydrogen bond action, the gelling reaction that coagulates rigid reaction and take place with the hydrated cementitious product of self, can compensate contraction and the fine and close cement stone uniformly of formation that cement setting causes, reduce dehydration and free liquid content simultaneously, prevent the contraction that grout aquation, dehydration and segregation cause, effectively stop the formation of micro-annulus.Many gelling reactions of lightweight toughener can form the spatial grid structure of even compact between subparticle simultaneously, under static state, can comparatively fast form the self-support type viscous gel, make grout have certain thixotroping ability, improve the anti-channeling ability of grout.
Low-temperature early strength agent is made up of water glass, sulfuric acid calcium powder, trolamine, three's acting in conjunction can significantly promote the hydration reaction of cement at low temperatures, improve the hydration activity of strongthener, further accelerate the carrying out of hydration reaction, generate more gelling hydrated product, form densification, non-infiltration, high-intensity cement stone more, demonstrate good low-temperature high-early strength ability.
Anti-migration agent is made up of polyvinyl alcohol, gypsum, poly-sodium naphthalene sulfonate and borax, by controlled crosslinked, the polyreaction of its macromolecular compound in grout, between the spatial grid structure that the cement granules aquation forms, form the macromolecule network structure, improved the viscous resistance in the grout, can slow down because the weightlessness that the grout aquation causes, and can form dense film on pervious course surface, thus reduce the dehydration of grout and the rate of permeation of cement stone, help to prevent to miss generation with channelling.
Anti-migration agent and lightweight toughener, low-temperature early strength agent acting in conjunction, compensated the volumetric shrinkage of system cement stone, shorten multiviscosisty transit time and quiet gel strength transit time of grout greatly, reduced the aquation gelling weightlessness of grout, thereby guaranteed the overall sealing performance of cement mantle and the pressure equilibrium of grout dynamic process, prevented the generation of channelling effectively.
The rheological property conditioning agent can improve grout initial consistency and flowability, guarantees the good construction performance of grout.Defoamer can reduce the air admission amount, helps the preparation of grout.
The present invention's beneficial effect compared with prior art:
1, low-temperature hardening scurry-proof cement slurry for well cementing of the present invention is applicable to the low temperature gas-bearing formation, enlivens water layer, the well cementation on leakiness stratum.
2, low-temperature hardening scurry-proof cement slurry for well cementing, under the low temperature strength development fast, curing time is short, can effectively prevent channelling, prevent leakage, improves cementing quality.
2, simple, the reasonable price of preparation method.
Embodiment 1
Low-temperature hardening scurry-proof cement slurry for well cementing, it is characterized in that being made up of 100 weight part silicate cementing concretes, 50 weight parts waters, 10 weight part lightweight tougheners, 4 weight part low-temperature early strength agents, 3 weight part anti-migration agents, 0.2 weight part rheological property conditioning agent, 0.2 weight part defoamer, wherein the lightweight toughener is made up of glass microballon, 50 weight part 40-100 μ m ultrafine high activity slags, 25 weight part 0.5-3 μ m fine cements and the fine silica flour of 15 weight part 0.02-0.5 μ m of 100 weight part 150-200 μ m; Low-temperature early strength agent is made up of 100 weight part sulfuric acid calcium powders, 80 weight part trolamines, 50 weight part water glass; Anti-migration agent is made up of the poly-sodium naphthalene sulfonate of gypsum, 200 weight parts of 100 weight part 20-80 order polyvinyl alcohol, 200 weight parts and the borax of 10 weight parts; The rheological property conditioning agent is made up of 100 weight part sodium polystyrene sulfonates and 100 weight part calcium lignin sulphonates, and defoamer is made up of the polyoxyethylene glycol ether.
The raw materials used commercially available product that is.
Above-mentioned raw materials is made density 1.80g/cm
3Low-temperature hardening scurry-proof cement slurry for well cementing, the application hole condition is bit size: 311mm, well depth total length: 165m; Surface string size: 244.5mm is dark under the sleeve pipe: 161.2m; Bottom-hole static temperature: 22 ℃; Formation-parting pressure: 1.80g/cm
320～30 meters exist active gas-bearing formation and water layer.Adopt this low-temperature high-early strength anti-migration grout 0～80 meter well depth section, performance test is listed in table 1.
Table 1
| Performance | Embodiment 1 | Embodiment 2 | Embodiment 3 |
| The cement rank | JH“G” | JH“G” | JH“G” |
| Test temperature, ℃ | 20 | 20 | 30 |
| Test pressure, MPa cement slurry density, g/cm 3 | 5 1.80 | 5 1.50 | 10 1.60 |
| Free liquid, mL | 0 | 0 | 0 |
| The API dehydration, mL | 20 | 18 | 16 |
| Plastic viscosity, CP | 121.5 | 134.5 | 124.5 |
| Thickening time, min | 114 | 225 | 185 |
| Yield value, 1bf/100sq ft | 30.5 | 20.5 | 18.5 |
| Ultimate compression strength, MPa, 8h/12h/24h | 2.33/4.12/14.65 | 2.06/5.99/16.05 | 2.63/7.38/16.72 |
Embodiment 2
Low-temperature hardening scurry-proof cement slurry for well cementing, it is characterized in that forming by 100 weight part silicate cementing concretes, 70 weight parts waters, 50 weight part lightweight tougheners, 4 weight part low-temperature early strength agents, 3 weight part anti-migration agents, 0.5 weight part rheological property conditioning agent, 0.2 weight part defoamer, it is identical with embodiment 1 with the application hole condition that its each admixture is formed, and makes 1.50g/cm
3Low-temperature hardening scurry-proof cement slurry for well cementing, be used for 80-165 rice well depth section.Performance test is listed in table 1.
Embodiment 3
Low-temperature hardening scurry-proof cement slurry for well cementing, it is characterized in that being made up of 100 weight part silicate cementing concretes, 60 weight parts waters, 30 weight part lightweight tougheners, 4 weight part low-temperature early strength agents, 3 weight part anti-migration agents, 0.5 weight part rheological property conditioning agent, 0.2 weight part defoamer, its each admixture is formed identical with embodiment 1.
Above-mentioned raw materials is made density 1.60g/cm
3Low-temperature hardening scurry-proof cement slurry for well cementing, the application hole condition is bit size: 215.9mm, well depth total length: 500m; Sand string size: 177.8mm is dark under the sleeve pipe: 497.53m; Choking ring position: 472.92m; Bottom-hole static temperature: 33 ℃; Formation-parting pressure: 1.62g/cm
3Performance test is listed in table 1.
Test-results shows that the well cementing operation quality is good.Simultaneous test shows, uses each admixture all not reach this admixture effect of Combination separately.
Claims (4)
1. low-temperature hardening scurry-proof cement slurry for well cementing, it is characterized in that being made up of 100 weight part silicate cementing concretes, 50-95 weight parts water, 10-100 weight part lightweight toughener, 3-8 weight part low-temperature early strength agent, 3-8 weight part anti-migration agent, 0.2-1 weight part rheological property conditioning agent, 0.1-0.3 weight part defoamer, wherein the lightweight toughener is made up of glass microballon, 40-60 weight part 40-100 μ m ultrafine high activity slag, 20-30 weight part 0.5-3 μ m fine cement and the fine silica flour of 10-20 weight part 0.02-0.5 μ m of 100 weight part 150-200 μ m; Low-temperature early strength agent is made up of 100 weight part sulfuric acid calcium powders, 80-100 weight part trolamine, 40-60 weight part water glass; Anti-migration agent is made up of the poly-sodium naphthalene sulfonate of gypsum, 200-300 weight part of 100 weight part 20-80 order polyvinyl alcohol, 150-300 weight part and the borax of 5-10 weight part; The rheological property conditioning agent is made up of 100 weight part sodium polystyrene sulfonates and 80-100 weight part calcium lignin sulphonate; Defoamer is made up of the polyoxyethylene glycol ether.
2. low-temperature hardening scurry-proof cement slurry for well cementing according to claim 1, it is characterized in that being made up of 100 weight part silicate cementing concretes, 50 weight parts waters, 10 weight part lightweight tougheners, 4 weight part low-temperature early strength agents, 3 weight part anti-migration agents, 0.2 weight part rheological property conditioning agent, 0.2 weight part defoamer, wherein the lightweight toughener is made up of glass microballon, 50 weight part 40-100 μ m ultrafine high activity slags, 25 weight part 0.5-3 μ m fine cements and the fine silica flour of 15 weight part 0.02-0.5 μ m of 100 weight part 150-200 μ m; Low-temperature early strength agent is made up of 100 weight part sulfuric acid calcium powders, 80 weight part trolamines, 50 weight part water glass; Anti-migration agent is made up of the poly-sodium naphthalene sulfonate of gypsum, 200 weight parts of 100 weight part 20-80 order polyvinyl alcohol, 200 weight parts and the borax of 10 weight parts; The rheological property conditioning agent is made up of 100 weight part sodium polystyrene sulfonates and 100 weight part calcium lignin sulphonates; Defoamer is made up of the polyoxyethylene glycol ether.
3. low-temperature hardening scurry-proof cement slurry for well cementing according to claim 1, it is characterized in that being made up of 100 weight part silicate cementing concretes, 70 weight parts waters, 50 weight part lightweight tougheners, 4 weight part low-temperature early strength agents, 3 weight part anti-migration agents, 0.5 weight part rheological property conditioning agent, 0.2 weight part defoamer, wherein the lightweight toughener is made up of glass microballon, 50 weight part 40-100 μ m ultrafine high activity slags, 25 weight part 0.5-3 μ m fine cements and the fine silica flour of 15 weight part 0.02-0.5 μ m of 100 weight part 150-200 μ m; Low-temperature early strength agent is made up of 100 weight part sulfuric acid calcium powders, 80 weight part trolamines, 50 weight part water glass; Anti-migration agent is made up of the poly-sodium naphthalene sulfonate of gypsum, 200 weight parts of 100 weight part 20-80 order polyvinyl alcohol, 200 weight parts and the borax of 10 weight parts; The rheological property conditioning agent is made up of 100 weight part sodium polystyrene sulfonates and 100 weight part calcium lignin sulphonates; Defoamer is made up of the polyoxyethylene glycol ether.
4. low-temperature hardening scurry-proof cement slurry for well cementing according to claim 1, it is characterized in that being made up of 100 weight part silicate cementing concretes, 60 weight parts waters, 30 weight part lightweight tougheners, 4 weight part low-temperature early strength agents, 3 weight part anti-migration agents, 0.5 weight part rheological property conditioning agent, 0.2 weight part defoamer, wherein the lightweight toughener is made up of glass microballon, 50 weight part 40-100 μ m ultrafine high activity slags, 25 weight part 0.5-3 μ m fine cements and the fine silica flour of 15 weight part 0.02-0.5 μ m of 100 weight part 150-200 μ m; Low-temperature early strength agent is made up of 100 weight part sulfuric acid calcium powders, 80 weight part trolamines, 50 weight part water glass; Anti-migration agent is made up of the poly-sodium naphthalene sulfonate of gypsum, 200 weight parts of 100 weight part 20-80 order polyvinyl alcohol, 200 weight parts and the borax of 10 weight parts; The rheological property conditioning agent is made up of 100 weight part sodium polystyrene sulfonates and 100 weight part calcium lignin sulphonates; Defoamer is made up of the polyoxyethylene glycol ether.
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| CN101747880A (en) * | 2009-12-29 | 2010-06-23 | 中国石油天然气集团公司 | Deep-water low-temperature low-density early-strength cementing slurry for well cementation |
| CN102030508A (en) * | 2010-11-24 | 2011-04-27 | 潘林有 | Muddy soil cement grout applied to vertical shaft part of pedestrian underpass in saturated soft clay region |
| CN101628800B (en) * | 2009-08-25 | 2011-12-07 | 北京中煤矿山工程有限公司 | Early strength cement grout with low dehydration ratio for grouting |
| CN102352226A (en) * | 2011-08-02 | 2012-02-15 | 东北石油大学 | Low-temperature early-strength oil well cement paste |
| CN102504775A (en) * | 2011-10-12 | 2012-06-20 | 西南石油大学 | Large temperature difference cement slurry for cementing of deep well long isolation section and preparation method thereof |
| CN102703044A (en) * | 2012-05-23 | 2012-10-03 | 成都欧美科石油科技股份有限公司 | Novel cement slurry plugging fluid |
| CN101633836B (en) * | 2009-08-26 | 2012-10-31 | 北京中煤矿山工程有限公司 | Quick-setting early strength cement slurry for ground pregrouting reinforcement |
| CN103865501A (en) * | 2014-02-28 | 2014-06-18 | 中国石油集团渤海钻探工程有限公司 | Low-density cement paste for salt-cavern gas storage well cementation |
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| CN101628800B (en) * | 2009-08-25 | 2011-12-07 | 北京中煤矿山工程有限公司 | Early strength cement grout with low dehydration ratio for grouting |
| CN101633836B (en) * | 2009-08-26 | 2012-10-31 | 北京中煤矿山工程有限公司 | Quick-setting early strength cement slurry for ground pregrouting reinforcement |
| CN101747880A (en) * | 2009-12-29 | 2010-06-23 | 中国石油天然气集团公司 | Deep-water low-temperature low-density early-strength cementing slurry for well cementation |
| CN101747880B (en) * | 2009-12-29 | 2013-12-04 | 中国石油天然气集团公司 | Deep-water low-temperature low-density early-strength cementing slurry for well cementation |
| CN102030508B (en) * | 2010-11-24 | 2013-02-13 | 潘林有 | Muddy soil cement grout applied to vertical shaft part of pedestrian underpass in saturated soft clay region |
| CN102030508A (en) * | 2010-11-24 | 2011-04-27 | 潘林有 | Muddy soil cement grout applied to vertical shaft part of pedestrian underpass in saturated soft clay region |
| CN102352226A (en) * | 2011-08-02 | 2012-02-15 | 东北石油大学 | Low-temperature early-strength oil well cement paste |
| CN102504775A (en) * | 2011-10-12 | 2012-06-20 | 西南石油大学 | Large temperature difference cement slurry for cementing of deep well long isolation section and preparation method thereof |
| CN102703044A (en) * | 2012-05-23 | 2012-10-03 | 成都欧美科石油科技股份有限公司 | Novel cement slurry plugging fluid |
| CN103865501A (en) * | 2014-02-28 | 2014-06-18 | 中国石油集团渤海钻探工程有限公司 | Low-density cement paste for salt-cavern gas storage well cementation |
| CN104774600A (en) * | 2015-03-13 | 2015-07-15 | 中国石油集团渤海钻探工程有限公司 | Oil well cement low-temperature composite early-strong coagulation accelerator |
| CN104893694A (en) * | 2015-06-02 | 2015-09-09 | 中科华星新材料有限公司 | High-strength low-density cement paste |
| CN104893694B (en) * | 2015-06-02 | 2018-05-29 | 中科华星新材料有限公司 | A kind of high intensity low density cement mortar |
| CN106746847A (en) * | 2016-09-27 | 2017-05-31 | 中国石油集团川庆钻探工程有限公司长庆固井公司 | A kind of compound micro- silicon light weight cement early strength agent and preparation method and application |
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