CN102827590A - High-efficiency semi-permeable membrane inhibitor for drilling fluid and preparation method thereof - Google Patents
High-efficiency semi-permeable membrane inhibitor for drilling fluid and preparation method thereof Download PDFInfo
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- CN102827590A CN102827590A CN2012103513255A CN201210351325A CN102827590A CN 102827590 A CN102827590 A CN 102827590A CN 2012103513255 A CN2012103513255 A CN 2012103513255A CN 201210351325 A CN201210351325 A CN 201210351325A CN 102827590 A CN102827590 A CN 102827590A
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Abstract
The invention relates to a high-efficiency semi-permeable membrane inhibitor for drilling fluid and a preparation method thereof, belonging to the technical field of chemical assistants for petroleum drilling. The semi-permeable membrane inhibitor is prepared from sodium silicate, trichloromethyl silane, sodium hydroxide, phosphate starch and water through a special process; and the preparation process is simple, the preparation cost is low, and the semi-permeable membrane efficiency can be up to 80% or above. The shale hydration, expansion and dispersion capacities of the high-efficiency semi-permeable membrane inhibitor is higher than that of other inhibitors and is far higher than that of anionic polymers and zwitterionic copolymers; and the drill chip recovery rate can be up to 97% or above. Sodium methyl siliconate generated in the reaction reacts with sodium silicate to generate an organic silicon compound which has fine high-temperature resistance; the high-temperature and high-pressure filter loss is 16ml and is much less than that of the existing product (>=20ml); and environment-polluting substances can not be produced, thereby ensuring that the high-efficiency semi-permeable membrane inhibitor is green and environment-friendly. The invention solves the problems that the existing inhibitor production process is complicated, a large number of environment-polluting substances can be produced in use, the high-temperature resistance and the drill chip pollution resistance are poor and the preparation cost is high.
Description
Technical field
The present invention relates to a kind of drilling fluid with efficient semi-permeable membranes suppressor factor and preparation method thereof, belong to oil drilling and use the auxiliary chemicals technical field.
Background technology
Mud shale in the petroleum drilling operation runs into water phenomenons such as hydration swelling, dispersion can occur, very easily causes accidents such as slump in, bit freezing.The reason of slump in unstability is because PP spreads institute extremely, and therefore, the diffusion of control PP is to keep the firm key of the borehole wall.The means of control PP diffusion are in drilling fluid, to add shale control agent at present; But existing shale control agent not only costs an arm and a leg; Complex manufacturing, and high temperature resistance, anti-cuttings contamination ability also can produce the material of a large amount of contaminate environment; Be unfavorable for wellbore stability, can not satisfy environmental requirement.
Summary of the invention
The objective of the invention is to; Raw materials such as a kind of employing water glass, silicone resin, phosphate ester starch, sodium hydroxide are provided; Be prepared from through special process; Have good high temperature resistance, anti-cuttings contamination performance and strong rejection capability ability, do not produce contaminate environment material, environmental protection, and production technique is simple, cheap for manufacturing cost.Can solve existing shale control agent complex manufacturing, produce a large amount of contaminate environment materials during use, and high temperature resistance, anti-cuttings contamination ability, the drilling fluid of the high problem of manufacturing cost is with efficient semi-permeable membranes suppressor factor and preparation method thereof.
The present invention realizes above-mentioned purpose through following technical scheme:
A kind of drilling fluid is characterized in that with efficient semi-permeable membranes suppressor factor it is processed by following raw materials by weight percent:
Water glass 17.5%,
Trichloromethyl silane 1%,
Sodium hydroxide 2.2%,
Phosphate ester starch 10.1%,
Water 69.2%.
Above-mentioned drilling fluid comprises the steps: with the preparation method of efficient semi-permeable membranes suppressor factor
The first step: the water with 0.7% joins in the reaction kettle, and the temperature in the reaction kettle is a normal temperature, adds 0.5% sodium hydroxide again, stirs 15～25 minutes, is mixed with aqueous sodium hydroxide solution;
Second step: the trichloromethyl silane of adding 1% in aqueous sodium hydroxide solution, after stirring, the temperature in the reaction kettle is risen to 80～90 ℃, reacted 1 hour, generate methyl silicon sodium alcoholate;
The 3rd step: in reaction kettle, add 1.7% sodium hydroxide, 3.5% water, 17.5% water glass successively, and to keep the temperature in the reaction kettle be 80～90 ℃, stirred 30 minutes, the methyl silicon sodium alcoholate in adding raw material and the reaction kettle is mixed;
The 4th step: in reaction kettle, add 10.1% phosphate ester starch and remaining 65% water again, and the temperature in the reaction kettle is risen to 100～110 ℃, reacted 2 hours, promptly make drilling fluid with efficient semi-permeable membranes suppressor factor product;
The 5th step: the product that makes is put in storage after with the plastic tank metering packing.
This drilling fluid with efficient semi-permeable membranes suppressor factor owing to adopt water glass, trichloromethyl silane, sodium hydroxide, phosphate ester starch and water to be prepared from through above-mentioned special process; And the methyl silicon sodium alcoholate that sodium hydroxide and trichloromethyl silane reaction generate is a kind of organosilicon stablizer, contains oleophilic drainage group alkyl in the molecule, is exposed to the outer end after adsorbing with clay; Wettability reversal takes place; Can improve the hydration shell of surface of clay, play the effect that keeps clay, improve the stability of drilling fluid; Can suppress to make slurry, keep good rheological.In addition; Silicate has the silicon-oxy tetrahedron structure; Can combine with the compound of silicon such as silicate on the borehole wall, Si oxide, the complex compound characteristic of formation is highly stable, can on the borehole wall, form one deck and have certain intensity; And hard " sealing shell " with semi-permeable membranes performance; At the peripheral resist that forms of the borehole wall, stop water and drilling fluid to get into the stratum, effectively reached the migration that prevents stratum hydration swelling, bedding crack, shutoff stratum, prevents clay particle in the stratum, the purpose that prevents slump in and protection hydrocarbon zone.
The present invention's beneficial effect compared with prior art is:
This drilling fluid is simple, cheap for manufacturing cost with efficient semi-permeable membranes suppressor factor manufacture craft, and its semipermeable membrane efficiency can reach more than 80%.Strong than other suppressor factor to shale hydration swelling, dispersive ability, much larger than negatively charged ion, amphoteric ion polymer, its cuttings recovery can reach more than 97%.The silicoorganic compound that methyl silicon sodium alcoholate that generates in the reaction and water glass reaction generate have good high temperature resistant property, and high temperature and high pre ssure filtration is 16ml, and the high temperature and high pre ssure filtration of currently available products is generally >=20ml.And do not produce the contaminate environment material, environmental protection.Solved the prior art complex manufacturing, can produce a large amount of contaminate environment materials during use, high temperature resistance, anti-cuttings contamination ability, the problem that manufacturing cost is high.
Embodiment
Use efficient semi-permeable membranes suppressor factor to be example with the drilling fluid of producing 1000 ㎏ below, the present invention is done further description.
Earlier take by weighing raw material by above-mentioned raw material weight per-cent:
Water glass 175 ㎏,
Trichloromethyl silane 10 ㎏,
Sodium hydroxide 22 ㎏,
Phosphate ester starch 101 ㎏,
Water 692 ㎏.
Concrete preparation method is following:
The first step: the water with 7 ㎏ joins in the reaction kettle earlier, and the temperature in the reaction kettle is a normal temperature, promptly 20 ℃.The sodium hydroxide that adds 5 ㎏ again stirred 20 minutes, was mixed with aqueous sodium hydroxide solution.
Second step: in the aqueous sodium hydroxide solution of the first step preparation, add the trichloromethyl silane of 10 ㎏, after stirring, the temperature in the reaction kettle is risen to 85 ℃, reacted 1 hour, generate methyl silicon sodium alcoholate.
Its chemical principle is following:
。
The 3rd step: in reaction kettle, add sodium hydroxide, the water of 35 ㎏ and the water glass of 175 ㎏ of 17 ㎏ more successively, and to keep the temperature in the reaction kettle be 85 ℃, stirred 30 minutes, the raw material of adding and the methyl silicon sodium alcoholate in the reaction kettle are mixed.
The 4th step: in reaction kettle, add the phosphate ester starch of 101 ㎏ and the water of remaining 650 ㎏ again, and the temperature in the reaction kettle is risen to 105 ℃, reacted 2 hours, promptly make drilling fluid with efficient semi-permeable membranes suppressor factor product;
The 5th step: the product that makes is used the plastic tank metering packing, every barrel of net weight 50 ㎏, warehouse-in is preserved.
The effect of each raw material is following in the present invention:
The aqueous solution of water glass is claimed water glass, and cohesive force is strong, acid resistance and good heat resistance, and intensity is higher.Making heat-resistant agent among the present invention uses.
Trichloromethyl silane is claimed silicone resin again, is the one type of resin that receives heat solidifiable and form tridimensional network that is made up of the silica structural unit, has excellent thermo-oxidative stability and good heat-resisting, cold-resistant, weather-proof, hydrophobicity performance.Making heat-resistant agent among the present invention uses.The methyl silicon sodium alcoholate that trichloromethyl silane and aqueous sodium hydroxide solution reaction generate is a kind of organosilicon stablizer, contains oleophilic drainage group alkyl in the molecule, is exposed to the outer end after adsorbing with clay; Wettability reversal takes place; Can improve the hydration shell of surface of clay, play the effect that keeps clay, can improve the stability of drilling fluid; And can suppress to make slurry, keep good rheological.
Sodium hydroxide is commonly called as caustic soda, caustic soda, and its aqueous solution is strong basicity; Industrial ion exchange membrane sodium hydroxide is answered National standard GB/T 11199-89; Generally make moisture absorber; Sodium hydroxide still is the good catalyst of many organic reactions, and wherein most typical is the hydrolysis reaction of ester; Also can produce big calorimetric with mineral acid generation neutralization reaction, generate corresponding salt.Making catalyzer among the present invention uses.
Phosphate ester starch is a kind of inorganic acid ester, foodstuff additive, and stability is high, generally exists with sodium-salt form, in the aqueous solution, dissociates and electronegative, belongs to the negative ion starch derivative, has the cold water swelling property, and slurries can not congeal when low temperature.Even congeal several times repeatedly, dissolve its slurries of back and still keep good level and smooth, mobile and emulsifying property.Stable viscosity, good fluidity, serous coat is transparent, tough, high resilience, wear resistance strong and destarch easily.Making dispersion emulsifier among the present invention uses.
The above is the embodiment of this invention; Above-mentioned not illustrating constitutes restriction to flesh and blood of the present invention; Under the those of ordinary skill of technical field after having read this specification sheets, can make an amendment or be out of shape above-mentioned embodiment, and do not deviate from essence of the present invention and scope.
Claims (1)
1. a drilling fluid is characterized in that with efficient semi-permeable membranes suppressor factor it is processed by following raw materials by weight percent:
Water glass 17.5%,
Trichloromethyl silane 1%,
Sodium hydroxide 2.2%,
Phosphate ester starch 10.1%,
Water 69.2%;
Above-mentioned drilling fluid comprises the steps: with the preparation method of efficient semi-permeable membranes suppressor factor
The first step: the water with 0.7% joins in the reaction kettle, and the temperature in the reaction kettle is a normal temperature, adds 0.5% sodium hydroxide again, stirs 15～25 minutes, is mixed with aqueous sodium hydroxide solution;
Second step: the trichloromethyl silane of adding 1% in aqueous sodium hydroxide solution, after stirring, the temperature in the reaction kettle is risen to 80～90 ℃, reacted 1 hour, generate methyl silicon sodium alcoholate;
The 3rd step: in reaction kettle, add 1.7% sodium hydroxide, 3.5% water, 17.5% water glass successively, and to keep the temperature in the reaction kettle be 80～90 ℃, stirred 30 minutes, the methyl silicon sodium alcoholate in adding raw material and the reaction kettle is mixed;
The 4th step: in reaction kettle, add 10.1% phosphate ester starch and remaining 65% water again, and the temperature in the reaction kettle is risen to 100～110 ℃, reacted 2 hours, promptly make drilling fluid with efficient semi-permeable membranes suppressor factor product;
The 5th step: the product that makes is put in storage after with the plastic tank metering packing.
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| CN201210351325.5A CN102827590B (en) | 2012-09-20 | 2012-09-20 | High-efficiency semi-permeable membrane inhibitor for drilling fluid and preparation method thereof |
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| CN201210351325.5A CN102827590B (en) | 2012-09-20 | 2012-09-20 | High-efficiency semi-permeable membrane inhibitor for drilling fluid and preparation method thereof |
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Cited By (5)
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| CN103937473A (en) * | 2014-03-27 | 2014-07-23 | 中国石油大学(华东) | Organic silicon water plugging agent and preparation method thereof |
| CN104558217A (en) * | 2014-12-30 | 2015-04-29 | 北京中科日升科技有限公司 | Cross-linked starch for drilling fluid and preparation method thereof |
| CN109735314A (en) * | 2019-02-28 | 2019-05-10 | 吉林大学 | A kind of inorganic-organic composite silicon hydrochlorate high temperature resistant filming drilling fluid system |
| CN109971438A (en) * | 2017-12-28 | 2019-07-05 | 中国石油化工股份有限公司 | A kind of drilling fluid modified starch coating caving control agent and preparation method thereof |
| CN112209958A (en) * | 2020-09-17 | 2021-01-12 | 江苏吉良新材料科技有限公司 | Preparation method and device of cement water repellent |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103937473A (en) * | 2014-03-27 | 2014-07-23 | 中国石油大学(华东) | Organic silicon water plugging agent and preparation method thereof |
| CN103937473B (en) * | 2014-03-27 | 2016-06-29 | 中国石油大学(华东) | A kind of organosilicon water shutoff agent and preparation method thereof |
| CN104558217A (en) * | 2014-12-30 | 2015-04-29 | 北京中科日升科技有限公司 | Cross-linked starch for drilling fluid and preparation method thereof |
| CN109971438A (en) * | 2017-12-28 | 2019-07-05 | 中国石油化工股份有限公司 | A kind of drilling fluid modified starch coating caving control agent and preparation method thereof |
| CN109971438B (en) * | 2017-12-28 | 2021-05-18 | 中国石油化工股份有限公司 | Modified starch coated anti-sloughing agent for drilling fluid and preparation method thereof |
| CN109735314A (en) * | 2019-02-28 | 2019-05-10 | 吉林大学 | A kind of inorganic-organic composite silicon hydrochlorate high temperature resistant filming drilling fluid system |
| CN109735314B (en) * | 2019-02-28 | 2021-07-20 | 吉林大学 | Organic-inorganic composite silicate high-temperature-resistant film-forming drilling fluid system |
| CN112209958A (en) * | 2020-09-17 | 2021-01-12 | 江苏吉良新材料科技有限公司 | Preparation method and device of cement water repellent |
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| CN102827590B (en) | 2014-02-26 |
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