CN1632279A - Double action air leakage prevention agent for oil-gas well cementing, method for preparation and use thereof - Google Patents
Double action air leakage prevention agent for oil-gas well cementing, method for preparation and use thereof Download PDFInfo
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- CN1632279A CN1632279A CN 200410081347 CN200410081347A CN1632279A CN 1632279 A CN1632279 A CN 1632279A CN 200410081347 CN200410081347 CN 200410081347 CN 200410081347 A CN200410081347 A CN 200410081347A CN 1632279 A CN1632279 A CN 1632279A
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Abstract
The present invention relates to a double-acting air leakage prevention agent used for oil-gas well cementing, method for preparing same and use thereof. Said air leakage prevention agent can not only effectively compensate for reducing of pore pressure during the cement paste condensation process, but also increase the air leakage resistance force of cement paste. Said air leakage prevention agent consists of modified polyvinyl alcohol, carboxyl alkylation cellulose, plasticizer, amorphous active silicon and pretreated aluminum micro powder. The process for producing the air leakage prevention agent is as follows: adding the amorphous active silicon into the polyvinyl alcohol solution to form a stable toughness liquid assumed as component A; mixing the pretreated aluminum micro powder, the plasticizer, the carboxyl alkylation cellulose, the amorphous active silicon and water according to proportions to form a paste assumed as component B; mixing the component A and the component B proportionally to get a viscous liquid product-the double-acting air leakage prevention agent. In combination with dispersing agents and retarders, the air leakage prevention agent can be used to make a cement paste system with double-acting air leakage preventing functions. Said air leakage prevention agent is used principally for casing and cementing of oil gas wells and is characterized by its strong air leakage preventing capability, small loss during filtrations and excellent paste stability.
Description
Technical field
The present invention relates to the reduction that can effectively remedy pressure in the cement paste condensation process that a kind of oil gas well cementing operation is used, can increase the double acting agent for anti gassing-out and preparation method thereof and application of cement paste has channeling resistance again, belong to a kind of additive that uses in the casing and cementing.
Background technology
In the process of exploration and development oil gas field, casing and cementing is an important step of drilling completion engineering, the quality of cementing quality is not only follow-up exploitation and is strengthened the prerequisite of the normal enforcements of engineer operation such as reservoir reconstruction, and is the important assurance that prolongs oil gas well ordinary production life-span, discovery and fully improve production capacity, improve the oilfield prospecting developing benefit.Wait to coagulate in the process in well cementation, because the weightlessness of cement paste causes the hydrocarbon stratum water breakthrough to go into the problem that annular space influences cementing quality, be one of the great difficult problem that the boundary endeavours to solve of cementing the well always.Therefore, about preventing the cementing slurry technology of oil gas water breakthrough in the well cementation process, up to the present, developed multiple anti-gas channeling additive and mortar architecture both at home and abroad at different has channeling potentiality, as Gasblock, the D600 etc. of Gas-chek, the Gastop of Halliburton company, Latex2000 etc. and Dowell company, and the KQ series of domestic-developed, G69 etc.Propose many minimizing cement pastes with good conditionsi " weightlessness " and prevented the practical art technology of has channeling and measure etc.But, for oil-gas-water layer well cementation with very high has channeling potentiality, especially the channeling control cement slurry technology is but demanded further further investigation solution urgently under the hot conditions, and the anti-gas channeling principle of existing cement paste anti-gas channeling additive and mortar architecture thereof is single, not only to increase effective pressure in the cement paste condensation process to reach and reduce the purpose that " weightlessness " prevents has channeling, be exactly only to increase the potentiality that in the formation fluid encroached water mud base resistance that flows take place and reduce to take place has channeling, also both do not increase effective pressure and prevented weightlessness, can increase the double-acting anti-gas channeling additive and the mortar architecture thereof of gas cut resistance again, therefore its anti-gas channeling is limited in one's ability, especially has channeling potentiality height, anti-gas channeling technological measure such as annular space add back pressure and two coagulating under the situation that application such as cement are restricted again, just are difficult to guarantee the quality of cementing the well.
Summary of the invention
The objective of the invention is to overcome above-mentioned the deficiencies in the prior art, a kind of double acting agent for anti gassing-out and preparation method and application of oil gas well cementing operation are provided, this agent for anti gassing-out and other typical additives can make the mortar architecture of double acting anti-gas channeling.
Major technique feature of the present invention is: a kind of double acting agent for anti gassing-out of oil gas well cementing operation, be made up of modified polyvinylalcohol, carboxylation alkylation cellulose, fluidizer, amorphous substance activated silica, pre-treating aluminium micro mist, the weight percent of each component when partial properties sees the following form:
| The component title | Weight, % | Partial properties |
| Modified polyvinylalcohol | 4.0～5.0 | |
| The carboxylation alkylation cellulose | 1.0～1.5 | Viscosity 1000～3000cp. |
| Fluidizer | 2.0～3.0 | Commercially available industrial goods, pulvis.As, dodecane sulfonate, dodecyl benzene sulfonate. |
| The amorphous substance activated silica | 10～15 | Purity＞98%, average grain diameter is less than 15 μ m. |
| The pre-treating aluminium micro mist | 4.0～5.0 | Average grain diameter is less than 75 μ m. |
| Distilled water | 71～79 |
The preparation method of this double acting agent for anti gassing-out is: polyvinyl alcohol is dissolved in 65～85 ℃ of following distilled water, constantly stir fully and be cooled to 40～50 ℃ after the dissolving, adding organic titanium cross-linking agent continuation stir about 20min mixes, organic titanium cross-linking agent has hydramine to close titanium or a diketone closes titanium, adjust the pH value then about 3, continue stirring reaction 60～90min, adjust the pH value again to neutral, promptly obtain modified polyvinylalcohol, in the modified poly ethylene alcoholic solution, add the amorphous substance activated silica and form stable liquid of vicidity, be assumed to be component A; Stir the about 20min of degreasing in the aqueous surfactant solution with aluminium micro mist input 1～2%, the degreasing surfactant can be used the daily use chemicals washing agent, filter-press dehydration then, stir preliminary treatment in the solution of the aluminium micro mist input oxidant after will dewatering again, oxidant can be with hydrogen peroxide or potassium bichromate, about 60～the 90min of pretreatment time, dehydration, washing, oven dry promptly obtain pretreated aluminium micro mist, again pretreated aluminium micro mist, fluidizer, carboxylation alkylation cellulose, amorphous substance activated silica and water are mixed and made into body of paste by the listed percentage by weight of last table, are assumed to be B component; Component A, B component are mixed in proportion the fluid product oil and gas well mud double acting agent for anti gassing-out that promptly obtains thickness.
In cementing slurry, add this double acting agent for anti gassing-out 4～6%, dispersing agent 0.5～1.0%, retarding agent 0.05～0.5%, can make mortar architecture with double acting anti-gas channeling.
Oil and gas well mud double acting agent for anti gassing-out provided by the invention and mortar architecture thereof are compared with the prior art, have following beneficial effect: (1) has the weightlessness that remedies in the cement paste condensation process and increases the double action of the resistance of formation fluid encroached water mud base, thereby improves the ability that prevents has channeling in the cement paste condensation process; (2) this additive has the leak-off of falling effect, and the filter loss that can control cement paste is lower than 50ml, and does not need in addition both to have simplified prescription again with fluid loss additive, can avoid two kinds of inconsistent problems between the additive again; (3) this additive both can be used for conventional density cement paste, also can be used for the low-density cement mortar of sealing Absorption Wells of Low Pressure and the high-density cement mortar of high-pressure well, and serviceability temperature then can be from low temperature to high temperature; (4) this additive and the existing dispersing agent commonly used and the mortar architecture of retarding agent preparation, its integration engineering performance harmony is good, be easy to adjust and control and system is stable and have certain microdilatancy characteristic and improve cementing strength between cement stone ring and stratum and sleeve pipe, the interlayer packing effect of raising cement stone ring; (5) production technology of this additive product is simple, and cost is lower, constant product quality.
The specific embodiment
Embodiment 1: double acting agent for anti gassing-out and preparation method thereof
(1) preparation of modified polyvinylalcohol: it is in 70 ℃ the distilled water that the 16g1796 polyvinyl alcohol is dissolved in the 200ml temperature, after dissolving fully, continuous stirring is cooled to 45 ℃, about 180min, slowly add hydramine and close titanium crosslinkers stir about 20min and make and mix, adjust about pH value to 3, continue stirring reaction 80min, adjust the pH value to neutral, add 36g amorphous substance activated silica again and puddle evenly, promptly obtain the modified poly ethylene alcoholic solution of concentration about 6%, component A.Whole process should be carried out under stirring condition.
(2) preparation of pre-treating aluminium micro mist: 20g aluminium micro mist is dropped into 100ml be added with the about 30min of stirring degreasing in 1% water-detergent solution, filter-press dehydration, aluminium micro mist after will dewatering again drops into the about 70min of stir process in the solution that 100ml is added with 5% hydrogen peroxide, dehydration again, pre-treating aluminium micro mist after the dehydration is dropped into the about 10min of agitator treating in the 200ml water, and the product oven dry after will washing then promptly obtains pretreated aluminium micro mist.
(3) get distilled water 90ml, add the mixture of 4g carboxylation alkylation cellulose, 8g fluidizer, 18g preliminary treatment aluminium powder and 12g amorphous substance activated silica, and be mixed evenly, promptly obtain containing pre-treating aluminium micro mist and the cellulosic paste of carboxylation alkylation, B component.
(4) get 133g component A, the 67g B component mixes, and promptly obtains product of the present invention: oil well cement double acting agent for anti gassing-out.
Embodiment 2: the preparation of double acting channeling control cement slurry and key property
Take by weighing 600gG level oil well cement, this double acting of 30g agent for anti gassing-out, 4.8g dispersing agent SXY-2, SXY-2 is the oil well cement dispersing agent of keto-aldehyde condensation, 3g retarding agent HS-R, HS-R is the oil well cement retarder based on organic phosphate, its actual amount is according to the requirement of cementing operation activity duration, definite by testing, measure by 0.44 water/binder ratio and to join pulp-water.Earlier double acting agent for anti gassing-out, dispersing agent and retarding agent are added join be mixed evenly in the pulp-water after, press the API method and prepare slurry, promptly obtain the double acting channeling control cement slurry.This cement paste can be used for the well cementation of 60～120 ℃ oil gas well, the ability that its grease proofing air water is scurried is strong, filter loss is lower than 50ml, thickening time is easy to regulation and control, the early strength development of cement stone is fast, the stable cementing strength that does not shrink, has microdilatancy, can significantly improve cement stone and cement interface of system.
Claims (3)
1, a kind of double acting agent for anti gassing-out of oil gas well cementing operation, it is characterized in that: this double acting agent for anti gassing-out is made up of modified polyvinylalcohol, carboxylation alkylation cellulose, fluidizer, amorphous substance activated silica, pre-treating aluminium micro mist, and the weight percent of each component when partial properties sees the following form:
The component title Weight, % Partial properties
Modified polyvinylalcohol 4.0～5.0
The carboxylation alkylation cellulose 1.0～1.5 Viscosity 1000～3000cp.
Fluidizer 2.0～3.0 Commercially available industrial goods, pulvis.As, dodecane sulfonate, dodecyl benzene sulfonate.
The amorphous substance activated silica 10～15 Purity＞98%, average grain diameter is less than 15 μ m.
The pre-treating aluminium micro mist 4.0～5.0 Average grain diameter is less than 75 μ m.
Distilled water 71～79
2, according to the described double acting agent for anti gassing-out of claim 1, it is characterized in that: the method for making of this double acting agent for anti gassing-out is, polyvinyl alcohol is dissolved in the distilled water under 65～85 ℃, constantly stir fully and be cooled to 40～50 ℃ after the dissolving, adding organic titanium cross-linking agent continuation stir about 20min mixes, organic titanium cross-linking agent has hydramine to close titanium or a diketone closes titanium, adjust the pH value then about 3, continue stirring reaction 60～90min, adjust the pH value again to neutral, promptly get the modified poly ethylene alcoholic solution, in the modified poly ethylene alcoholic solution, add the amorphous substance activated silica and form stable liquid of vicidity, be assumed to be component A; Stir the about 20min of degreasing in the aqueous surfactant solution with aluminium micro mist input 1～2%, the degreasing surfactant can be used the daily use chemicals washing agent, filter-press dehydration then, stir preliminary treatment in the solution of the aluminium micro mist input oxidant after will dewatering again, oxidant can be with hydrogen peroxide or potassium bichromate, about 60～the 90min of pretreatment time, dehydration, washing, oven dry promptly obtain pretreated aluminium micro mist, again pre-treating aluminium micro mist, fluidizer, carboxylation alkylation cellulose, amorphous substance activated silica and water are hybridly prepared into body of paste by the listed percentage by weight of last table, are assumed to be B component; Component A, B component are mixed in proportion the fluid product double acting agent for anti gassing-out that promptly obtains thickness.
3, double acting agent for anti gassing-out according to claim 1, it is characterized in that: in cementing slurry, add this double acting agent for anti gassing-out 4～6%, dispersing agent 0.5～1.0%, retarding agent 0.05～0.5% can make the mortar architecture with double acting anti-gas channeling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200410081347XA CN1325754C (en) | 2004-11-29 | 2004-11-29 | Double action air leakage prevention agent for oil-gas well cementing, method for preparation and use thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200410081347XA CN1325754C (en) | 2004-11-29 | 2004-11-29 | Double action air leakage prevention agent for oil-gas well cementing, method for preparation and use thereof |
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| Publication Number | Publication Date |
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| CN1632279A true CN1632279A (en) | 2005-06-29 |
| CN1325754C CN1325754C (en) | 2007-07-11 |
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| CNB200410081347XA Expired - Fee Related CN1325754C (en) | 2004-11-29 | 2004-11-29 | Double action air leakage prevention agent for oil-gas well cementing, method for preparation and use thereof |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101967964A (en) * | 2010-09-03 | 2011-02-09 | 大庆石油管理局 | Method for prewashing multi-density double-setting long-sealing gas channeling prevention well cementing |
| CN102505928A (en) * | 2011-10-14 | 2012-06-20 | 西安石油大学 | Method for treating natural gas well suite gas channeling |
| CN105038745A (en) * | 2015-05-19 | 2015-11-11 | 成都欧美克石油科技有限公司 | Novel liquid silicon anti-channeling cement slurry used in well cementation |
| WO2016000090A1 (en) * | 2014-07-03 | 2016-01-07 | 中国石油大学(北京) | Oil extraction method of suppressing escape in co2 flooding process in low-permeability fractured oil reservoir by means of two-stage plugging |
| CN106701048A (en) * | 2016-12-19 | 2017-05-24 | 天津中油渤星工程科技有限公司 | Anti-water breakthrough material for well cementation and preparation method thereof |
| CN108048059A (en) * | 2018-01-09 | 2018-05-18 | 成都川锋栲胶有限公司 | Oil-well cement agent for anti gassing-out preparation method |
| CN111058794A (en) * | 2019-11-26 | 2020-04-24 | 中国石油天然气股份有限公司 | Control method and device for applying back pressure to annulus |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2316038C (en) * | 1991-06-21 | 2005-12-27 | Halliburton Company | Composition and method for cementing a well |
| US5370181A (en) * | 1993-08-13 | 1994-12-06 | Shell Oil Company | Anti gas-migration cementing |
| AU9585698A (en) * | 1997-09-30 | 1999-04-23 | Bj Services Company | Multi-functional additive for use in well cementing |
| CN1288035A (en) * | 2000-04-07 | 2001-03-21 | 西南石油学院 | Agent for anti gassing-out in well cementing slurry and its prepn. method |
-
2004
- 2004-11-29 CN CNB200410081347XA patent/CN1325754C/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101967964A (en) * | 2010-09-03 | 2011-02-09 | 大庆石油管理局 | Method for prewashing multi-density double-setting long-sealing gas channeling prevention well cementing |
| CN101967964B (en) * | 2010-09-03 | 2013-07-10 | 大庆石油管理局 | Method for prewashing multi-density double-setting long-sealing gas channeling prevention well cementing |
| CN102505928A (en) * | 2011-10-14 | 2012-06-20 | 西安石油大学 | Method for treating natural gas well suite gas channeling |
| CN102505928B (en) * | 2011-10-14 | 2013-11-06 | 西安石油大学 | Method for treating natural gas well suite gas channeling |
| WO2016000090A1 (en) * | 2014-07-03 | 2016-01-07 | 中国石油大学(北京) | Oil extraction method of suppressing escape in co2 flooding process in low-permeability fractured oil reservoir by means of two-stage plugging |
| CN105038745A (en) * | 2015-05-19 | 2015-11-11 | 成都欧美克石油科技有限公司 | Novel liquid silicon anti-channeling cement slurry used in well cementation |
| CN106701048A (en) * | 2016-12-19 | 2017-05-24 | 天津中油渤星工程科技有限公司 | Anti-water breakthrough material for well cementation and preparation method thereof |
| CN108048059A (en) * | 2018-01-09 | 2018-05-18 | 成都川锋栲胶有限公司 | Oil-well cement agent for anti gassing-out preparation method |
| CN111058794A (en) * | 2019-11-26 | 2020-04-24 | 中国石油天然气股份有限公司 | Control method and device for applying back pressure to annulus |
| CN111058794B (en) * | 2019-11-26 | 2021-09-28 | 中国石油天然气股份有限公司 | Control method and device for applying back pressure to annulus |
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| Publication number | Publication date |
|---|---|
| CN1325754C (en) | 2007-07-11 |
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