CN102093862A - Salt-tolerant latex cement slurry for well cementation - Google Patents
Salt-tolerant latex cement slurry for well cementation Download PDFInfo
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- CN102093862A CN102093862A CN2010105683406A CN201010568340A CN102093862A CN 102093862 A CN102093862 A CN 102093862A CN 2010105683406 A CN2010105683406 A CN 2010105683406A CN 201010568340 A CN201010568340 A CN 201010568340A CN 102093862 A CN102093862 A CN 102093862A
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Abstract
The invention discloses salt-tolerant latex cement slurry for well cementation, which comprises the following components: cement, salt tolerant latex which is 4-40% of weight of cement, water-loss control agent which is 3-4% of weight of cement, slow-release agent which is 0-2% of weight of cement, dispersant which is 0.5-3% of weight of cement, saline or seawater with concentration not higher than 15% which is 18-51% of weight of cement, and antifoaming agent which is 0.5-1.3% of weight of cement. The salt-tolerant latex cement slurry provided by the invention overcomes the shortcoming that ordinary latex is not salt tolerant, so that the salt-tolerant latex cement slurry system can be used for cementing a complex well with a salt bearing rock formation (salt formation, salt and gypsum formations, saltwater formation). In addition, the salt-tolerant latex cement slurry provided by the invention can be also directly prepared from seawater, so as to reduce the fresh water transportation load of well cementing operation in an offshore drilling platform, and reduce operation cost.
Description
Technical field
The present invention relates to a kind of oil gas well cementing operation latex cement slurry system, concrete is a kind of salt tolerant latex-cement slurry.
Background technology
The latex cement slurry system has been widely used in the well cementation of problem wells such as extended reach well, Multilateral Wells, long horizontal traverse well, adjustment well and slim hole well, in order to anti-gas channeling and the control dehydration ability that improves grout, improve bonding capacity, toughness and the anti-corrosion capability of cement stone simultaneously.But the normal latex grout is salt tolerant not, because of the breakdown of emulsion of saltouing, has limited the use of latex-cement slurry in the complicated well of saliferous rock stratum (salt deposit, saline bed, brine layer) class in salt solution; In addition, high price ion such as the calcium that exists in the seawater, magnesium ion and sodium-chlor make the latex breakdown of emulsion and flocculate that therefore, the normal latex mortar architecture can not be prepared with seawater.
Summary of the invention
The purpose of this invention is to provide a kind of saliferous rock stratum (salt deposit, saline bed, brine layer) well cementation latex cement slurry system that is applicable to, this latex cement slurry system ability mass concentration is not higher than 15% sodium chloride aqueous solution, and can directly prepare with seawater, alleviate the pressure of offshore drilling platform well cementing operation fresh water transportation greatly, reduced the well cementing operation cost.
In order to realize the foregoing invention purpose, the technical scheme that the application adopts is: the salt tolerant latex-cement slurry is used in well cementation, and it consists of: cement; Account for salt tolerant latex, the water retaining of 3-4%, the retardant of 0-2%, the dispersion agent of 0.5-3%, the salt solution of 18-51% or the defoamer of seawater and 0.5-1.3% that cement quality is respectively 4-40%.
When bottom-hole static temperature (BHST) greater than 110 ℃, above-mentioned mortar architecture also comprises the silica flour that accounts for cement quality 35%, to prevent the strength retrogression of water mudstone.
Described salt tolerant latex is made up of special-purpose carboxylic styrene butadiene latex and stablizer, and carboxylic styrene butadiene latex is wherein produced by Tianjin Cnpc Boxing Engineering Technology Co., Ltd., and this product has been applied for national patent (ZL 2,008 1 0167189.8); Stablizer is a tensio-active agent, by one or more composite the obtaining in nonionic surface active agent and the ionogenic surfactant.Wherein, the general molecular formula of nonionogenic tenside is: R1-O-(CH
2CH
2O) m-H (R
1For containing C
5-C
15The aliphatic hydrocarbon or the unsaturated alkane of carbochain, polymerization degree m is 10-40); Contain C in the ionogenic surfactant molecular structure
5～C
15Alkyl, (OCH
2CH
2) nSO
3, (OCH
2CH
2) nOSO
3(polymerization degree n is 10-40), SO
3Or OSO
3Group.
Described water retaining is the special-purpose water retaining of oil gas well, as carboxymethyl cellulose, polysaccharide, contain acrylamide-acrylicacid-α-acrylamide-2-methyl propane sulfonic acid (AMPS) multipolymer.
Described retardant is applicable to that oil gas well bottom hole circulating temperature (BHCT) is greater than 50 ℃ situation, common oil gas well cementing operation retardant is organophosphate (as ethylenediamine tetraacetic methene sodium phosphate and 1-hydroxy ethylidene-1,1-bisphosphate etc.), contain unsaturated carboxylic acid such as multipolymer, sulfonated lignin and water soluble hydroxy carboxylate salts (as citric acid, tartrate and glucoheptonic acid and salt thereof etc.) such as vinylformic acid, toxilic acid or fumaric acid.
Described dispersion agent is the common common dispersion agent of oil gas well cementing operation, as the aldehyde-ketone condensate that forms by the polycondensate of naphthalenesulfonate and formaldehyde, by formaldehyde and acetone.
Described defoamer be the organosilicon alkanes (contain in the molecular structure-Si-O and-CH
3Group), phosphoric acid ester (molecular structure contains C4H9-and PO-group) defoamer.
Described silica flour is applicable to that bottom-hole static temperature is higher than 110 ℃ hole condition, and dioxide-containing silica is not less than 96%.
Described salt solution is that mass concentration is not higher than 15% sodium chloride aqueous solution.
The present invention's beneficial effect compared with prior art: the salt tolerant latex cement slurry system that (1) the present invention proposes has overcome not salt tolerant of normal latex, causes flocculation because of breakdown of emulsion when salt-containing solution preparation grout, thereby jeopardizes the defective of cementing operation safety.Salt tolerant latex cement slurry system can be used for the well cementation of saliferous rock stratum complicated wells such as (salt deposit, saline bed, brine layers); (2) the salt tolerant latex of the present invention's proposition can directly be prepared grout with seawater, alleviates offshore drilling platform well cementing operation fresh water transportation burden, reduces operating cost.
Description of drawings
Fig. 1: the normal latex grout typical case multiviscosisty curve that contains 15wt% sodium-chlor.
Fig. 2: the salt tolerant latex-cement slurry typical case multiviscosisty curve (120 ℃) that contains 15wt% sodium-chlor.
Embodiment
The proportioning of the used salt tolerant latex of following embodiment and the test of latex salt tolerance see Table 1: wherein the preparation method of salt tolerant latex and salt tolerance testing method are: in table 1 ratio, get a certain amount of carboxylic styrene butadiene latex A and at room temperature mix with certain amount of stabilizer B, then 4000 rev/mins of following stir abouts of corrugation stirrer 20 minutes to guarantee that sample mix is even.Be added to and fill in the small beaker that the 20mL mass concentration is 15% sodium chloride aqueous solution or seawater the stability of observation sample in above-mentioned solution with the glue head dropper sample drop that takes a morsel.Test-results is as shown in table 1: the different sample salt tolerance tests of table 1
Annotate: a: be the carboxylic styrene butadiene latex that Jiangyin chemical company limited of positive nation produces, trade(brand)name: ZB2414; B: be the carboxylic styrene butadiene latex that Tianjin Cnpc Boxing Engineering Technology Co., Ltd. produces, trade(brand)name: BCT-800L; OP-10: octyl phenol polyoxyethylene (10) ether; AES: fatty alcohol-polyoxyethylene ether (3) sodium sulfate.
Embodiment 1 is measured each component of salt water resistance mud by table 2, and by GB/T 19139-2003 preparation salt tolerant latex-cement slurry with carry out the cement slurry property test.The G class g cement is high anti-sulphur (HSR) the G class g cement that Sichuan Jiahua Enterprise (Group) Corp., Ltd. produces in the table 2; Silica flour is that the Yanshan Mountain, Tianjin super finely ground slag factory produces; Carboxylic styrene butadiene latex is that Tianjin Cnpc Boxing Engineering Technology Co., Ltd. produces; Containing AMPS polymkeric substance water retaining is the BXF-200L that Tianjin Cnpc Boxing Engineering Technology Co., Ltd. produces; 1-hydroxy ethylidene-1,1-bisphosphate are that Shandong and upright water treatment company limited produce; The polycondensate of naphthalenesulfonate and formaldehyde, aldehyde-ketone condensate are Tianjin red sun chemical industry company limited and produce, and trade(brand)name is respectively UNF and USZ; The phosphoric acid ester defoamer provides trade(brand)name AD-14L for Shuande, Foshan City head of district sky trade Co., Ltd; Following table 3 is identical with table 4 recipe ingredient source.Table 2 salt tolerant latex-cement slurry and performance
Annotate: c: salt tolerant latex composition sees Table 1 numbering 7; D: salt tolerant latex composition sees Table 1 numbering 9.
Embodiment 2 is measured each component of salt water resistance mud by table 3, and by GB/T 19139-2003 preparation salt tolerant latex-cement slurry and carry out the cement slurry property test, experimental result sees Table 3: table 3 salt tolerant latex cement slurry formula and performance
Annotate: c: salt tolerant latex composition sees Table 1 numbering 7; D: salt tolerant latex composition sees Table 1 numbering 9.
Comparative Examples is got the salt tolerant latex-cement slurry that indicates this prescription of * in the table 3, draws its multiviscosisty curve, compares with the multiviscosisty curve of normal latex grout, the results are shown in Figure 1 and Fig. 2.
By among Fig. 1 as can be seen, " bulge phenomenon " appears in the multiviscosisty curve of normal latex grout, denseness can cause the grout can not pumping greater than 70Bc, thereby jeopardizes cementing operation safety; By among Fig. 2 as can be seen, the denseness of salt water resistance mud is stable, does not change in the cementing operation time, can guarantee construction safety.
Embodiment 3 is measured each component of grout by table 4, and by GB/T 19139-2003 preparation seawater latex-cement slurry and carry out the cement slurry property test, experimental result sees Table 4: the latex-cement slurry of table 4 seawater prepared bentonite drilling fluid and performance
Annotate: e: salt tolerant latex composition sees Table 1 numbering 10; F: salt tolerant latex composition sees Table 1 numbering 11.
Claims (9)
1. well cementation salt tolerant latex-cement slurry, it consists of: cement, account for salt tolerant latex that cement quality is respectively 4-40%,
The dispersion agent of the water retaining of 3-4%, the retardant of 0-2%, 0.5-3%, the concentration of 18-51% are not higher than 15% salt solution or the defoamer of seawater and 0.5-1.3%.
2. well cementation salt tolerant latex-cement slurry according to claim 1 is characterized in that: comprise that also accounting for cement quality is 35%
Silica flour.
3. well cementation salt tolerant latex-cement slurry according to claim 1 is characterized in that: salt tolerant latex comprises carboxylic styrene butadiene latex 50-80% and stablizer 20-50% according to mass percent; Wherein stablizer is a tensio-active agent, by one or more composite the obtaining in nonionic surface active agent and the ionogenic surfactant; The general molecular formula of described nonionogenic tenside is: R
1-O-(CH
2CH
2O) m-H, wherein R
1For containing C
5-C
15The aliphatic hydrocarbon or the unsaturated alkane of carbochain, polymerization degree m is 10-40; Contain C in the described ionogenic surfactant molecular structure
5～C
15Alkyl, (OCH
2CH
2) nSO
3, (OCH
2CH
2) nOSO
3SO
3Or OSO
3Group, wherein (OCH
2CH
2) nSO
3With (OCH
2CH
2) nOSO
3SO
3Polymerization degree n be 10-40.
4. well cementation salt tolerant latex-cement slurry according to claim 1 is characterized in that: described water retaining is carboxymethyl cellulose, polysaccharide or contains acrylamide-acrylicacid-α-acrylamide-2-methyl propane sulfonic acid multipolymer; Described retardant is organophosphate, contain unsaturated carboxylic acid or water soluble hydroxy carboxylate salt; Described dispersion agent is by the polycondensate of naphthalenesulfonate and formaldehyde or the aldehyde-ketone condensate that formed by formaldehyde and acetone; Described defoamer is organosilicon alkanes or phosphoric acid ester defoamer.
5. well cementation salt tolerant latex-cement slurry according to claim 4 is characterized in that: described organophosphate is ethylenediamine tetraacetic methene sodium phosphate or 1-hydroxy ethylidene-1, the 1-bisphosphate; Described unsaturated carboxylic acid is vinylformic acid, toxilic acid, fumaric acid multipolymer or sulfonated lignin; Described water soluble hydroxy carboxylate salt is citric acid, tartrate or glucoheptonic acid and salt thereof.
6. well cementation salt tolerant latex-cement slurry according to claim 4 is characterized in that: contain in the molecular structure of organosilane defoamer-Si-O and-CH
3Group; The molecular structure of phosphoric acid ester defoamer contains C
4H
9-and the PO-group.
7. well cementation salt tolerant latex-cement slurry according to claim 4 is characterized in that: described water retaining is for containing acrylamide-acrylicacid-α-acrylamide-2-methyl propane sulfonic acid multipolymer.
8. well cementation salt tolerant latex-cement slurry according to claim 5 is characterized in that: described organophosphate is a 1-hydroxy ethylidene-1, the 1-bisphosphate.
9. well cementation salt tolerant latex-cement slurry according to claim 3 is characterized in that: described stablizer is a kind of or the two composite the getting in octyl phenol polyoxyethylene (10) ether or fatty alcohol-polyoxyethylene ether (3) sodium sulfate.
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102604614A (en) * | 2012-02-15 | 2012-07-25 | 成都欧美科石油科技股份有限公司 | Anti-flow cementing slurry for well cementation |
| CN102618231A (en) * | 2012-03-09 | 2012-08-01 | 中国石油天然气集团公司 | Low-temperature shallow channeling-prevention cement slurry |
| CN102643633A (en) * | 2012-04-06 | 2012-08-22 | 茂名市三元化工有限公司 | High-temperature and anti-salt gas-channeling-preventing agent and manufacturing method thereof |
| CN103923628A (en) * | 2014-04-17 | 2014-07-16 | 中国海洋石油总公司 | Low-viscidity flexible cement paste for well cementation with slim hole and single channel |
| CN104804716A (en) * | 2015-03-16 | 2015-07-29 | 中国石油集团渤海钻探工程有限公司 | Well-cementing and anti-channeling nonionic styrene-butadiene latex and preparation method thereof |
| CN105505352A (en) * | 2015-12-29 | 2016-04-20 | 中国石油化工股份有限公司 | Plugging agent for high-sulfur-content gas wells |
| CN106747015A (en) * | 2017-01-03 | 2017-05-31 | 中国石油集团长城钻探工程有限公司固井公司 | One kind well cementation resistance to CO of high temperature resistance2Corrosion cement mortar |
| CN106947443A (en) * | 2017-03-16 | 2017-07-14 | 中国海洋石油总公司 | Polymer dispersion powder composition and the stabilizer for preventing polymer dispersion powder to be demulsified |
| CN107586538A (en) * | 2017-09-27 | 2018-01-16 | 中石化石油工程技术服务有限公司 | A kind of low frictional resistance high-performance cement slurry system of suitable small size oil pipe |
| CN110249027A (en) * | 2017-02-03 | 2019-09-17 | 沙特阿拉伯石油公司 | Cement slurry, solidification cement and its preparation and application |
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| CN1487049A (en) * | 2003-07-15 | 2004-04-07 | 茂名市三元化工有限公司 | Production process of oil well reinforcing, salt resisting and gas escape preventing agent |
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| CN101759825A (en) * | 2003-11-24 | 2010-06-30 | 中国石油天然气集团公司 | Carboxylated styrene-butadiene rubber latex special for oil and gas field cementing well |
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2010
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Patent Citations (3)
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| CN1487049A (en) * | 2003-07-15 | 2004-04-07 | 茂名市三元化工有限公司 | Production process of oil well reinforcing, salt resisting and gas escape preventing agent |
| CN101759825A (en) * | 2003-11-24 | 2010-06-30 | 中国石油天然气集团公司 | Carboxylated styrene-butadiene rubber latex special for oil and gas field cementing well |
| CN101328401A (en) * | 2007-06-20 | 2008-12-24 | 中国石油天然气集团公司 | High temperature toughcementing carboxyl butadiene-styrene latex additive |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102604614A (en) * | 2012-02-15 | 2012-07-25 | 成都欧美科石油科技股份有限公司 | Anti-flow cementing slurry for well cementation |
| CN102604614B (en) * | 2012-02-15 | 2013-11-27 | 成都欧美科石油科技股份有限公司 | Anti-flow cementing slurry for well cementation |
| CN102618231A (en) * | 2012-03-09 | 2012-08-01 | 中国石油天然气集团公司 | Low-temperature shallow channeling-prevention cement slurry |
| CN102618231B (en) * | 2012-03-09 | 2014-06-18 | 中国石油天然气集团公司 | Low-temperature shallow channeling-prevention cement slurry |
| CN102643633A (en) * | 2012-04-06 | 2012-08-22 | 茂名市三元化工有限公司 | High-temperature and anti-salt gas-channeling-preventing agent and manufacturing method thereof |
| CN103923628A (en) * | 2014-04-17 | 2014-07-16 | 中国海洋石油总公司 | Low-viscidity flexible cement paste for well cementation with slim hole and single channel |
| CN104804716A (en) * | 2015-03-16 | 2015-07-29 | 中国石油集团渤海钻探工程有限公司 | Well-cementing and anti-channeling nonionic styrene-butadiene latex and preparation method thereof |
| CN104804716B (en) * | 2015-03-16 | 2017-09-15 | 中国石油集团渤海钻探工程有限公司 | Well cementation anti-channeling nonionic styrene-butadiene latex and preparation method thereof |
| CN105505352A (en) * | 2015-12-29 | 2016-04-20 | 中国石油化工股份有限公司 | Plugging agent for high-sulfur-content gas wells |
| CN106747015A (en) * | 2017-01-03 | 2017-05-31 | 中国石油集团长城钻探工程有限公司固井公司 | One kind well cementation resistance to CO of high temperature resistance2Corrosion cement mortar |
| CN110249027A (en) * | 2017-02-03 | 2019-09-17 | 沙特阿拉伯石油公司 | Cement slurry, solidification cement and its preparation and application |
| CN110291171A (en) * | 2017-02-03 | 2019-09-27 | 沙特阿拉伯石油公司 | Insulating liquid and cement slurry comprising surfactant |
| CN106947443A (en) * | 2017-03-16 | 2017-07-14 | 中国海洋石油总公司 | Polymer dispersion powder composition and the stabilizer for preventing polymer dispersion powder to be demulsified |
| CN106947443B (en) * | 2017-03-16 | 2019-11-15 | 中国海洋石油集团有限公司 | Polymer dispersion powder composition and the stabilizer for preventing polymer dispersion powder to be demulsified |
| CN107586538A (en) * | 2017-09-27 | 2018-01-16 | 中石化石油工程技术服务有限公司 | A kind of low frictional resistance high-performance cement slurry system of suitable small size oil pipe |
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Application publication date: 20110615 |