CN102766447B - Oil well cement efficient spacer fluid and using method thereof - Google Patents
Oil well cement efficient spacer fluid and using method thereof Download PDFInfo
- Publication number
- CN102766447B CN102766447B CN201210284288.0A CN201210284288A CN102766447B CN 102766447 B CN102766447 B CN 102766447B CN 201210284288 A CN201210284288 A CN 201210284288A CN 102766447 B CN102766447 B CN 102766447B
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- CN
- China
- Prior art keywords
- xanthan gum
- oil well
- starch
- well cement
- high efficiency
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- 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.)
- Expired - Fee Related
Links
- 125000006850 spacer group Chemical group 0.000 title claims abstract description 32
- 239000004568 cement Substances 0.000 title claims abstract description 22
- 239000003129 oil well Substances 0.000 title claims abstract description 15
- 238000000034 method Methods 0.000 title claims abstract description 12
- 239000012530 fluid Substances 0.000 title abstract description 24
- 229920001285 xanthan gum Polymers 0.000 claims abstract description 29
- 239000000230 xanthan gum Substances 0.000 claims abstract description 29
- 235000010493 xanthan gum Nutrition 0.000 claims abstract description 29
- 229940082509 xanthan gum Drugs 0.000 claims abstract description 29
- 238000002360 preparation method Methods 0.000 claims abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000013505 freshwater Substances 0.000 claims abstract description 8
- 239000002994 raw material Substances 0.000 claims abstract description 4
- 229920002472 Starch Polymers 0.000 claims description 25
- 235000019698 starch Nutrition 0.000 claims description 25
- 239000008107 starch Substances 0.000 claims description 25
- 238000012986 modification Methods 0.000 claims description 20
- 230000004048 modification Effects 0.000 claims description 20
- 239000007788 liquid Substances 0.000 claims description 16
- 238000002955 isolation Methods 0.000 claims description 13
- 239000012286 potassium permanganate Substances 0.000 claims description 13
- 229940067573 brown iron oxide Drugs 0.000 claims description 10
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 9
- 238000006243 chemical reaction Methods 0.000 claims description 9
- 230000003647 oxidation Effects 0.000 claims description 7
- 238000007254 oxidation reaction Methods 0.000 claims description 7
- 239000000839 emulsion Substances 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 6
- 238000012856 packing Methods 0.000 claims description 3
- 238000013517 stratification Methods 0.000 claims description 3
- 239000006228 supernatant Substances 0.000 claims description 3
- 238000005553 drilling Methods 0.000 abstract description 18
- 239000002002 slurry Substances 0.000 abstract description 7
- 238000005516 engineering process Methods 0.000 abstract description 3
- 238000002156 mixing Methods 0.000 abstract description 3
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 abstract 2
- 239000001254 oxidized starch Substances 0.000 abstract 2
- 235000013808 oxidized starch Nutrition 0.000 abstract 2
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 abstract 2
- 239000000843 powder Substances 0.000 abstract 2
- GJCOSYZMQJWQCA-UHFFFAOYSA-N 9H-xanthene Chemical class C1=CC=C2CC3=CC=CC=C3OC2=C1 GJCOSYZMQJWQCA-UHFFFAOYSA-N 0.000 abstract 1
- 239000011259 mixed solution Substances 0.000 abstract 1
- 239000011440 grout Substances 0.000 description 23
- 230000008719 thickening Effects 0.000 description 8
- 238000012360 testing method Methods 0.000 description 7
- 239000000725 suspension Substances 0.000 description 6
- 229920002261 Corn starch Polymers 0.000 description 3
- 239000008120 corn starch Substances 0.000 description 3
- 235000013336 milk Nutrition 0.000 description 3
- 239000008267 milk Substances 0.000 description 3
- 210000004080 milk Anatomy 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 235000011149 sulphuric acid Nutrition 0.000 description 3
- 239000001117 sulphuric acid Substances 0.000 description 3
- 239000002253 acid Substances 0.000 description 2
- 239000008186 active pharmaceutical agent Substances 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 238000005189 flocculation Methods 0.000 description 2
- 230000016615 flocculation Effects 0.000 description 2
- 210000003205 muscle Anatomy 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000000518 rheometry Methods 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 241001449342 Chlorocrambe hastata Species 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011268 mixed slurry Substances 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Landscapes
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses an oil well cement efficient spacer fluid and a using method thereof and belongs to an oil well cement well cementation technology. The oil well cement efficient spacer fluid is composed of independently packaged raw materials of, by mass, 1%-5% of xanthan gum, 15%-25% of oxidized starch, 5%-15% of ferric oxide powders and the balance fresh water. During the preparation of the spacer fluid, firstly, the modified xanthan gum is dissolved in the water for 1-2 hours, then the oxidized starch is added, and the ferric oxide powders are uniformly mixed with the mixed solution before cementing. The spacer fluid can be used at temperatures from 27 DEG C to 150 DEG C and can effectively replace cement slurries so that the cement slurries and drilling fluids are prevented from mixing to cause slurry mixing.
Description
Technical field
The present invention relates to a kind of cement spacer and using method, especially a kind of oil well cement high efficiency isolation liquid and using method thereof.
Background technology
After general drilling fluid and grout mix, can pollute each other.In order to prevent that drilling fluid and grout from polluting mutually, a certain amount of spacer pad that conventionally reinjects after injecting washing fluid, spacer pad can not react with drilling fluid and grout.In spacer pad, add after suitable spacer pad additive, the viscosity of spacer pad can obviously increase, and has suspension effect, can effectively replace drilling fluid, prevent that grout and drilling fluid from producing mixed slurry, and all there is good consistency with drilling fluid system and cement additive.
Use at present the spacer pad of cementing the well all to have some limitations, as Applicable temperature narrow range, poor etc. with grout and drilling fluid consistency.
Summary of the invention
The object of this invention is to provide a kind of broad application temperature range, good with grout and drilling fluid consistency, convenient easily molten, the efficient isolated water mud of energy is followed drilling fluid and is had oil well cement high efficiency isolation liquid and the using method thereof of certain salt resistance.
In order to solve the problems of the technologies described above, the technical solution used in the present invention is: a kind of oil well cement high efficiency isolation liquid, is comprised of the raw material of the independent packing of following mass percent:
Described xanthan gum is modification xanthan gum.
Described modification xanthan gum is the instant xanthan gum of modification.
Described Sumstar 190 is potassium permanganate oxidation starch.
The preparation method of described potassium permanganate oxidation starch comprises the steps: starch water to be made into the starch emulsion that mass percent concentration is 15%-40%, keep not stopping to stir, maintain the temperature of reaction of 20 ℃-35 ℃, add the potassium permanganate of starch consumption 1%-8% and the aqueous sulfuric acid of starch consumption 2%-10%, react to solution till red-purple becomes white, after reaction finishes, stratification, remove supernatant liquid, lower floor's emulsion is dried, obtain Sumstar 190, described per-cent is mass percent.
The using method of high efficiency isolation liquid for above-mentioned oil well cement, when preparation spacer pad, is first dissolved in xanthan gum 1-2 hour in fresh water, then adds Sumstar 190, before needs cementing, brown iron oxide and above-mentioned dosing is puddled evenly.
The invention has the beneficial effects as follows:
1, Applicable temperature a wider range, is generally 27 ~ 150 ℃ of left and right.
2, there is good consistency with grout, can not make the phenomenons such as grout generation retrogradation, flocculation, sudden strain of a muscle be solidifying.
3, thickening effectiveness is remarkable, and low concentration solution has high viscosity.
4, anti-salt, acid and alkali-resistance, compatible good, in same solution system, there is good compatibility with acid, alkali, salt.
5, synergistic is good, can be used in conjunction with synergy with other thickening material.
6, use simple, stable performance, collect thickening, suspend, be stable at one.
Embodiment
Below in conjunction with embodiment, the present invention is described in further detail:
Oil well cement high efficiency isolation liquid of the present invention, is comprised of the raw material of the independent packing of following mass percent:
Described xanthan gum is modification xanthan gum.
Described modification xanthan gum is the instant xanthan gum of modification.
Described Sumstar 190 is potassium permanganate oxidation starch.
The preparation method of described potassium permanganate oxidation starch comprises the steps: starch water to be made into the starch emulsion that mass percent concentration is 15%-40%, keep not stopping to stir, maintain the temperature of reaction of 20 ℃-35 ℃, add the potassium permanganate of starch consumption 1%-8% and the aqueous sulfuric acid of starch consumption 2%-10%, react to solution till red-purple becomes white, after reaction finishes, stratification, remove supernatant liquid, lower floor's emulsion is dried, obtain Sumstar 190, described per-cent is mass percent.
The using method of high efficiency isolation liquid for above-mentioned oil well cement, during preparation spacer pad, is first dissolved in xanthan gum 1-2 hour in fresh water, then adds Sumstar 190, before needs cementing, brown iron oxide and above-mentioned dosing is puddled evenly.
In order to understand the present invention, with embodiment, further illustrate the present invention below, but do not limit the present invention.
Xanthan gum used is modification xanthan gum, preferably adopts the instant xanthan gum of modification.
Modification xanthan gum used is that Shandong Fu Feng Group Co.,Ltd produces FF410T product.Certainly, the also instant xanthan gum of available modification (be Shandong Fu Feng Group Co.,Ltd produce FF430C product).
Embodiment 1
First prepare potassium permanganate oxidation starch.Prepare 25% corn starch milk, keep not stopping to stir, stirring velocity is 65r/min, maintaining temperature of reaction is 30 ℃, adds starch (butt) amount 5%(quality, lower with) potassium permanganate solution, and starch (butt) amount 8%(quality, lower with) sulphuric acid soln, react 2 hours, filter, the dry Sumstar 190 that obtains.
Get modification xanthan gum 20g, Sumstar 190 300g, brown iron oxide 100g, fresh water 1580g, modification xanthan gum is dissolved in to 1-2 hour in water, then add Sumstar 190, before needs cementing, brown iron oxide and above-mentioned dosing are puddled evenly, obtain sample 1.
Embodiment 2
First prepare Sumstar 190.Prepare 35% corn starch milk, maintaining temperature of reaction is 20 ℃, adds starch (butt) to measure 8% potassium permanganate solution and starch (butt) and measures 5% sulphuric acid soln.
According to the method described in embodiment 1, operate, obtain Sumstar 190.
Get modification xanthan gum 100g, Sumstar 190 500g, brown iron oxide 300g, fresh water 1100g, modification xanthan gum is dissolved in to 1-2 hour in water, then add Sumstar 190, before needs cementing, brown iron oxide and above-mentioned dosing are puddled evenly, obtain sample 2.
Embodiment 3
First prepare Sumstar 190.Prepare 28% corn starch milk, maintaining temperature of reaction is 35 ℃, adds starch (butt) to measure 6% potassium permanganate solution and starch (butt) and measures 10% sulphuric acid soln.
According to the method described in embodiment 1, operate, obtain Sumstar 190.
Get modification xanthan gum 50g, Sumstar 190 350g, brown iron oxide 150g, fresh water 1450g, modification xanthan gum is dissolved in to 1-2 hour in water, then add Sumstar 190, before needs cementing, brown iron oxide and above-mentioned dosing are puddled evenly, obtain sample 3.
Embodiment 4
High efficiency isolation liquid performance evaluation of the present invention
According to standard SY/T5374-2000 Oil/gas Well cementing spearhead using method, spacer pad is carried out to performance evaluation.
(1) suspension property test
Drilling fluid is got from scene, and grout is pressed the preparation of API standard
Get respectively volume fraction for 1. 5% drilling fluid+95% spacer pad, 2. 5% spacer pad+95% grout
Use stirring rod mixing solutions, and be heated to 100 ℃, 120 ℃, 150 ℃, observe phenomena is as following table
Table 1 suspension property (5% drilling fluid+95% spacer pad)
Table 2 suspension property (5% spacer pad+95% grout)
Experimental data shows: spacer pad has good suspension property to drilling fluid and grout, and is that in 150 ℃ of situations, effect is still fine in bottom hole circulating temperature.
(2) the compatible test of rheological
Drilling fluid is got from scene, and grout is pressed the preparation of API standard, and testing data table is as shown in table 3.
The rheology compatibility data table of table 3 drilling fluid, grout and spacer pad
Testing data shows, spacer pad mixes with drilling fluid, grout in varing proportions, and the plastic viscosity of mixture obviously reduces, and shows that rheology consistency is good.
(3) impact of spacer pad on cement slurry water loss amount
The impact of table 4 spacer pad on cement slurry water loss amount
| Mixture (volume fraction) | Fluid loss, ml |
| 100% grout | 215 |
| 5% spacer pad+95% grout | 198 |
| 25% spacer pad+75% grout | 189 |
| 50% spacer pad+50% grout | 195 |
| Experiment condition | 90℃/6.9MPa，30min |
Experimental data shows, spacer pad different ratios mixes with grout, the requirement of fluid loss conformance with standard, and have certain filtrate-loss control energy.
(4) compatible test of thickening time
To being mixed with the grout of different ratios spacer pad, according to GB10238 regulation, carry out thickening time test, data are as shown in table 5.
The impact of table 5 spacer pad on the thickening time
Testing data shows, by the biased sample of different ratios preparation, its thickening time is a little more than the thickening time of neat slurry, and spacer pad must be used can not cause the phenomenons such as grout generation retrogradation, flocculation, sudden strain of a muscle be solidifying.
Indoor Evaluating Experimentation data show, the high efficiency isolation liquid of developing and grout and drilling fluid have good consistency, use temperature wide ranges, and suspension property is good, on not impact of cement slurry property.
Above-described embodiment is only for illustrating technological thought of the present invention and feature, its object is to make those skilled in the art can understand content of the present invention and implement according to this, can not only with the present embodiment, limit the scope of the claims of the present invention, be equal variation or the modification that all disclosed spirit is done, still drop in the scope of the claims of the present invention.
Claims (4)
1. an oil well cement high efficiency isolation liquid, is characterized in that, the raw material of the independent packing of following mass percent, consists of:
Xanthan gum 1% ~ 5%
Potassium permanganate oxidation starch 15% ~ 25%
Brown iron oxide 5% ~ 15%
Fresh water surplus
The preparation method of described potassium permanganate oxidation starch comprises the steps: starch water to be made into the starch emulsion that mass percent concentration is 15%-40%, keep not stopping to stir, maintain the temperature of reaction of 20 ℃-35 ℃, add the potassium permanganate of starch consumption 1%-8% and the aqueous sulfuric acid of starch consumption 2%-10%, react to solution till red-purple becomes white, after reaction finishes, stratification, remove supernatant liquid, lower floor's emulsion is dried, obtain Sumstar 190, described per-cent is mass percent.
2. oil well cement high efficiency isolation liquid according to claim 1, is characterized in that, described xanthan gum is modification xanthan gum.
3. oil well cement high efficiency isolation liquid according to claim 2, is characterized in that, described modification xanthan gum is the instant xanthan gum of modification.
4. the using method of high efficiency isolation liquid for oil well cement claimed in claim 1, is characterized in that, when preparation spacer pad, first xanthan gum is dissolved in to 1-2 hour in fresh water, then add Sumstar 190, before needs cementing, brown iron oxide and above-mentioned dosing are puddled evenly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210284288.0A CN102766447B (en) | 2012-08-10 | 2012-08-10 | Oil well cement efficient spacer fluid and using method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210284288.0A CN102766447B (en) | 2012-08-10 | 2012-08-10 | Oil well cement efficient spacer fluid and using method thereof |
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| Publication Number | Publication Date |
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| CN102766447A CN102766447A (en) | 2012-11-07 |
| CN102766447B true CN102766447B (en) | 2014-03-12 |
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| CN201210284288.0A Expired - Fee Related CN102766447B (en) | 2012-08-10 | 2012-08-10 | Oil well cement efficient spacer fluid and using method thereof |
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| CN107057671B (en) * | 2017-05-26 | 2019-09-27 | 山东大学 | A kind of water-in-oil emulsion interface packing system, preparation method and water-oil separating technique and application with self-reparing capability |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1618922A (en) * | 2002-11-21 | 2005-05-25 | 中国石油化工股份有限公司 | Positive electricity production well treatment liquid and its preparation method |
| CN101970598A (en) * | 2007-08-10 | 2011-02-09 | 哈利伯顿能源服务公司 | Treatment fluids comprising clarified xanthan and associated methods |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2011012921A1 (en) * | 2009-07-29 | 2011-02-03 | Services Petroliers Schlumberger | Compositions and methods for servicing subterranean wells |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1618922A (en) * | 2002-11-21 | 2005-05-25 | 中国石油化工股份有限公司 | Positive electricity production well treatment liquid and its preparation method |
| CN101970598A (en) * | 2007-08-10 | 2011-02-09 | 哈利伯顿能源服务公司 | Treatment fluids comprising clarified xanthan and associated methods |
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| CN102766447A (en) | 2012-11-07 |
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Effective date of registration: 20160309 Address after: 301508 Tianjin city Ninghe County Dong Ji Tuo Zhen Xi Ji Tuo Village East 500 meters Patentee after: TIANJIN KELIOIL ENGINEERING MATERIAL AND TECHNOLOGY Co.,Ltd. Address before: 05 room 2, A District, 300457 Xintai street, Binhai New Area Development Zone, Tianjin, China Patentee before: TIANJIN MEISEN SCIENCE & TECHNOLOGY Co.,Ltd. |
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Granted publication date: 20140312 |