CN102766447A - Oil well cement efficient spacer fluid and using method thereof - Google Patents
Oil well cement efficient spacer fluid and using method thereof Download PDFInfo
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- CN102766447A CN102766447A CN2012102842880A CN201210284288A CN102766447A CN 102766447 A CN102766447 A CN 102766447A CN 2012102842880 A CN2012102842880 A CN 2012102842880A CN 201210284288 A CN201210284288 A CN 201210284288A CN 102766447 A CN102766447 A CN 102766447A
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- oil well
- well cement
- starch
- high efficiency
- isolation liquid
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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 method of use, especially a kind of oil well cement high efficiency isolation liquid and method of use 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 after injecting washing fluid, reinjects usually, spacer pad can not react with drilling fluid and grout.After adding suitable spacer pad additive in the spacer pad; The viscosity of spacer pad can obviously increase, and suspension effect is arranged, and can effectively replace drilling fluid; Prevent that grout and drilling fluid from producing mixed slurry, and all have good consistency with drilling fluid system and cement additive.
Use the well cementation spacer pad all to have certain limitation at present, like the Applicable temperature narrow range, with grout and drilling fluid consistency difference etc.
Summary of the invention
The purpose of this invention is to provide a kind of broad application temperature range, good with grout and drilling fluid consistency, conveniently be prone to dissolve, the efficient isolated water mud of ability is followed drilling fluid and is had the oil well cement high efficiency isolation liquid and the method for use thereof of certain salt resistance.
In order to solve the problems of the technologies described above, the technical scheme that the present invention adopts is: a kind of oil well cement is used high efficiency isolation liquid, is made up of the raw material of the independent packing of following mass percent:
Described XG 550 is the modification XG 550.
Described modification XG 550 is the instant XG 550 of modification.
Described Sumstar 190 is a potassium permanganate oxidation starch.
The preparation method of said potassium permanganate oxidation starch comprises the steps: the starch water is made into the starch emulsion that mass percent concentration is 15%-40%, keeps not stopping to stir, and keeps 20 ℃-35 ℃ temperature of reaction; Add the potassium permanganate of starch consumption 1%-8% and the aqueous sulfuric acid of starch consumption 2%-10%; React become white by red-purple to solution till, after reaction finishes, standing demix; Remove supernatant liquid; Lower floor's emulsion is carried out drying, obtain Sumstar 190, said per-cent is mass percent.
Above-mentioned oil well cement is with the method for use of high efficiency isolation liquid, when the preparation spacer pad, at first XG 550 is dissolved in the fresh water 1-2 hour, adds Sumstar 190 then, before the needs cementing, brown iron oxide and above-mentioned dosing puddled evenly.
The invention has the beneficial effects as follows:
1, Applicable temperature a wider range is generally about 27 ~ 150 ℃.
2, with grout good consistency is arranged, can not make grout generation retrogradation, flocculation, sudden strain of a muscle phenomenon such as coagulate.
3, thickening effectiveness is remarkable, and low concentration solution has HV.
4, anti-salt, acid and alkali-resistance, compatible good, in same solution system, favorable compatibility is arranged with acid, alkali, salt.
5, synergistic property is good, can be used 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 done further explain:
Oil well cement of the present invention is used high efficiency isolation liquid, is made up of the raw material of the independent packing of following mass percent:
Described XG 550 is the modification XG 550.
Described modification XG 550 is the instant XG 550 of modification.
Described Sumstar 190 is a potassium permanganate oxidation starch.
The preparation method of said potassium permanganate oxidation starch comprises the steps: the starch water is made into the starch emulsion that mass percent concentration is 15%-40%, keeps not stopping to stir, and keeps 20 ℃-35 ℃ temperature of reaction; Add the potassium permanganate of starch consumption 1%-8% and the aqueous sulfuric acid of starch consumption 2%-10%; React become white by red-purple to solution till, after reaction finishes, standing demix; Remove supernatant liquid; Lower floor's emulsion is carried out drying, obtain Sumstar 190, said per-cent is mass percent.
Above-mentioned oil well cement is with the method for use of high efficiency isolation liquid, during the preparation spacer pad, at first XG 550 is dissolved in the fresh water 1-2 hour, adds Sumstar 190 then, before the needs cementing, brown iron oxide and above-mentioned dosing puddled evenly.
In order to understand the present invention, further specify the present invention with embodiment below, but do not limit the present invention.
Used XG 550 is the modification XG 550, preferably adopts the instant XG 550 of modification.
Used modification XG 550 is that Shandong Fu Feng Group Co.,Ltd produces the FF410T product.Certainly, the instant XG 550 of also available modification (being the FF430C product that Shandong Fu Feng Group Co.,Ltd produces).
Embodiment 1
At first prepare potassium permanganate oxidation starch.Prepare 25% corn starch milk, keep not stopping to stir, stirring velocity is 65r/min; Keeping temperature of reaction is 30 ℃, adds the potassium permanganate solution of starch (butt) amount 5% (quality, down together); And starch (butt) amount 8% (quality; Sulphuric acid soln down together) reacted 2 hours, and filtration, drying obtain Sumstar 190.
Get modification XG 550 20g, Sumstar 190 300g, brown iron oxide 100g, fresh water 1580g, the modification XG 550 be dissolved in the water 1-2 hour, add Sumstar 190 then, before the needs cementing, brown iron oxide and above-mentioned dosing are puddled evenly, sample 1.
Embodiment 2
At first prepare Sumstar 190.Prepare 35% corn starch milk, keeping temperature of reaction is 20 ℃, adds the potassium permanganate solution of starch (butt) amount 8% and the sulphuric acid soln of starch (butt) amount 5%.
Operate according to embodiment 1 described method, obtain Sumstar 190.
Get modification XG 550 100g, Sumstar 190 500g, brown iron oxide 300g, fresh water 1100g, the modification XG 550 be dissolved in the water 1-2 hour, add Sumstar 190 then, before the needs cementing, brown iron oxide and above-mentioned dosing are puddled evenly, sample 2.
Embodiment 3
At first prepare Sumstar 190.Prepare 28% corn starch milk, keeping temperature of reaction is 35 ℃, adds the potassium permanganate solution of starch (butt) amount 6% and the sulphuric acid soln of starch (butt) amount 10%.
Operate according to embodiment 1 described method, obtain Sumstar 190.
Get modification XG 550 50g, Sumstar 190 350g, brown iron oxide 150g, fresh water 1450g, the modification XG 550 be dissolved in the water 1-2 hour, add Sumstar 190 then, before the needs cementing, brown iron oxide and above-mentioned dosing are puddled evenly, 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 method of use spacer pad is carried out performance evaluation.
(1) suspension property test
Drilling fluid is got from the scene, and grout is pressed the preparation of API standard
Get volume(tric)fraction respectively and be 1. 5% drilling fluid+95% spacer pad, 2. 5% spacer pad+95% grout
Use the stirring rod mixing solutions, and be heated to 100 ℃, 120 ℃, 150 ℃, observe phenomena such 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 effect is still fine under 150 ℃ of situation in bottom hole circulating temperature.
(2) the compatible test of rheological
Drilling fluid is got from the scene, and grout is pressed the preparation of API standard, and the 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 that spacer pad mixes with drilling fluid, grout in varing proportions, and the PV of mixture obviously reduces, and shows that the rheology consistency is good.
(3) spacer pad is to the influence of cement slurry water loss amount
Table 4 spacer pad is to the influence of cement slurry water loss amount
| Mixture (volume(tric)fraction) | WL, 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 that the spacer pad different ratios mixes with grout, the requirement of WL conformance with standard, and certain filtrate-loss control ability is arranged.
(4) compatible test of thickening time
Grout to being mixed with the different ratios spacer pad carries out the thickening time test according to the GB10238 regulation, and data are as shown in table 5.
Table 5 spacer pad is to the influence of thickening time
Testing data shows, presses the biased sample of different ratios preparation, and its thickening time is a little more than the thickening time of neat slurry, and spacer pad must use phenomenon such as can not cause that grout generation retrogradation, flocculation, sudden strain of a muscle are coagulated.
Indoor evaluation test data show that high efficiency isolation liquid of being developed and grout and drilling fluid have good consistency, the use temperature wide ranges, and suspension property is good, to not influence of cement slurry property.
Above-described embodiment only is used to explain technological thought of the present invention and characteristics; Its purpose is to make those skilled in the art can understand content of the present invention and implements according to this; Can not only limit claim of the present invention with present embodiment; Be equal variation or the modification that all disclosed spirit is done, still drop in the claim of the present invention.
Claims (6)
1. an oil well cement is used high efficiency isolation liquid, it is characterized in that, is made up of the raw material of the independent packing of following mass percent:
2. oil well cement according to claim 1 is used high efficiency isolation liquid, it is characterized in that, described XG 550 is the modification XG 550.
3. oil well cement according to claim 2 is used high efficiency isolation liquid, it is characterized in that, described modification XG 550 is the instant XG 550 of modification.
4. oil well cement according to claim 1 is used high efficiency isolation liquid, it is characterized in that, described Sumstar 190 is a potassium permanganate oxidation starch.
5. oil well cement according to claim 4 is used high efficiency isolation liquid, it is characterized in that, the preparation method of said potassium permanganate oxidation starch comprises the steps: the starch water is made into the starch emulsion that mass percent concentration is 15%-40%; Keep not stopping to stir, keep 20 ℃-35 ℃ temperature of reaction, add the potassium permanganate of starch consumption 1%-8% and the aqueous sulfuric acid of starch consumption 2%-10%; React become white by red-purple to solution till, after reaction finishes, standing demix; Remove supernatant liquid; Lower floor's emulsion is carried out drying, obtain Sumstar 190, said per-cent is mass percent.
6. the described oil well cement of claim 1 is characterized in that with the method for use of high efficiency isolation liquid, when the preparation spacer pad; At first XG 550 was dissolved in the fresh water 1-2 hour; Add Sumstar 190 then, before the needs cementing, brown iron oxide and above-mentioned dosing are puddled evenly.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107057671A (en) * | 2017-05-26 | 2017-08-18 | 山东大学 | A kind of water-in-oil emulsion interface packing system, its preparation method and water-oil separating technique and application with self-reparing capability |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
| WO2011012921A1 (en) * | 2009-07-29 | 2011-02-03 | Services Petroliers Schlumberger | Compositions and methods for servicing subterranean wells |
| 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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Patent Citations (3)
| 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 |
| WO2011012921A1 (en) * | 2009-07-29 | 2011-02-03 | Services Petroliers Schlumberger | Compositions and methods for servicing subterranean wells |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107057671A (en) * | 2017-05-26 | 2017-08-18 | 山东大学 | A kind of water-in-oil emulsion interface packing system, its preparation method and water-oil separating technique and application with self-reparing capability |
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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. |