CN104087271A - Compound polyamine shale inhibitor for drilling fluid and preparation method thereof - Google Patents
Compound polyamine shale inhibitor for drilling fluid and preparation method thereof Download PDFInfo
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- CN104087271A CN104087271A CN201410345892.9A CN201410345892A CN104087271A CN 104087271 A CN104087271 A CN 104087271A CN 201410345892 A CN201410345892 A CN 201410345892A CN 104087271 A CN104087271 A CN 104087271A
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/02—Well-drilling compositions
- C09K8/03—Specific additives for general use in well-drilling compositions
- C09K8/035—Organic additives
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F226/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a single or double bond to nitrogen or by a heterocyclic ring containing nitrogen
- C08F226/02—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a single or double bond to nitrogen or by a heterocyclic ring containing nitrogen by a single or double bond to nitrogen
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- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G65/00—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule
- C08G65/02—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring
- C08G65/26—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring from cyclic ethers and other compounds
- C08G65/2618—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring from cyclic ethers and other compounds the other compounds containing nitrogen
- C08G65/2621—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring from cyclic ethers and other compounds the other compounds containing nitrogen containing amine groups
- C08G65/2624—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring from cyclic ethers and other compounds the other compounds containing nitrogen containing amine groups containing aliphatic amine groups
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Abstract
The invention discloses a compound polyamine shale inhibitor for a drilling fluid and a preparation method thereof, and the compound polyamine shale inhibitor is used for solving the problems that the existing shale inhibitor has multiple defects, and the abroad existing polyether amine inhibitor is needed to be prepared at a high temperature under high pressure, and is complex in production process, less in possibility of realizing industrial production, not strong in temperature resistance and incapable of being applied to a deep well and an extra-deep well. The inhibitor comprises an amido polymer A and an amido polymer at a weight ratio of (3-6):(7-4). The compound polyamine shale inhibitor for drilling fluid disclosed by the invention can be used for effectively inhibiting shale hydration and bentonite mud making, has no greater influence on water loss performance of the drilling fluid, and can be used for effectively keeping well wall stable, preventing occurrence of underground complex conditions such as hole shrinkage, and ensuring that drilling is smoothly carried out. The compound polyamine shale inhibitor for drilling fluid disclosed by the invention is strong in inhibition, small in flowing deformation and water loss interference of drilling liquid, and good in compatibility. And meanwhile, the preparation method for the inhibitor is simple to operate, and easy for realization of industrial large-scale production.
Description
Technical field
The present invention relates to oilfield chemistry field, especially oil field drilling fluids is used inhibitor field, is specially compound polyamine shale control agent and preparation method thereof for drilling fluid.
Background technology
In recent years, along with petroleum exploration and development develops to deep formation, drilling depth constantly increases, and high-angle wells and horizontal wells quantity increases gradually; In the process of drilling well; often can bore chance mud shale stratum, and the hydration swelling of mud shale, disperse will cause the appearance of a series of down hole problems such as bit balling, borehole well instability, undergauge bit freezing, have a strong impact on drilling period; increase drilling cost, even cause whole mouthful of well to be scrapped.
The problem that expands, disperses for above-mentioned shale hydration, people add shale control agent in drilling fluid, to reach the object that suppresses shale hydration.At present, common shale-control agent for drilling fluid mainly comprises inorganic salts inhibitor, pitch class inhibitor, silicates inhibitor, polymerization alcohols inhibitor and amine inhibitor etc.
But, these shale control agents part that all comes with some shortcomings.Inorganic salts inhibitor dosage is large, easily causes the sudden change of drilling fluid rheology and the significantly increase of dehydration.The inhibition of pitch class shale-control agent for drilling fluid is indifferent, and easy contaminate environment.Silicates shale-control agent for drilling fluid can make drilling fluid rheology be difficult to control.Polymerization alcohols inhibitor cannot suppress for strong water-sensitive mud shale, and temperature resistance not.Amine inhibitor is the focus of Recent study, but that the amine inhibitor ubiquity of current domestic use heat-resisting property is not strong, adds the rear problem that easily makes the dehydration of drilling fluid significantly increase.Develop a kind of polyetheramine inhibitor abroad, it has stronger rejection, and the dehydration impact on drilling fluid is less, be widely used in high performance water-based drilling fluid, but this class polyetheramine need be prepared under High Temperature High Pressure, production process is loaded down with trivial details, be difficult for realizing suitability for industrialized production, and owing to there is ehter bond in its main chain, heat-resisting property is not strong, cannot be applied in deep-well and ultra deep well.
Therefore, possess strong inhibition ability and high temperature resistant property in the urgent need to studying one, be easy to the shale-control agent for drilling fluid of suitability for industrialized production simultaneously.
Summary of the invention
Goal of the invention of the present invention is: the some shortcomings part existing for domestic existing shale control agent, and the external polyetheramine inhibitor using need be prepared under High Temperature High Pressure, production process is loaded down with trivial details, be difficult for realizing suitability for industrialized production, heat-resisting property is not strong, cannot be applied to the problem in deep-well and ultra deep well, compound polyamine shale control agent and preparation method thereof for a kind of drilling fluid is provided.Drilling fluid of the present invention can effectively suppress shale hydration and wilkinite pulping with compound polyamine shale control agent, simultaneously to the dehydration performance of drilling fluid without considerable influence, can effectively keep wellbore stability, prevent the appearance of the down hole problems such as undergauge, guarantee drilling well is carried out smoothly.Restraint of the present invention is strong, and temperature resistance reaches 180 DEG C, and the rheology on drilling fluid and dehydration impact are little, and compatibleness is good.Meanwhile, this drilling fluid is simple to operate by the preparation method of compound polyamine shale control agent, without aftertreatment, can be applied directly in drilling fluid, is easy to realize industrialized mass production, for ensureing drilling period, reduces drilling cost, significant.
To achieve these goals, the present invention adopts following technical scheme:
Compound polyamine shale control agent for drilling fluid, comprises amine based polymer A, amine based polymer B, and the weight ratio of described amine based polymer A, amine based polymer B is 3 ~ 6:7 ~ 4;
Described amine based polymer A is prepared from by the raw material of following ratio of weight and number: 12 ~ 27 parts of epoxy chloropropane, 18 ~ 33 parts of aminated compoundss, 0.5 ~ 2 part of initiator, 40 ~ 70 parts, water;
Described amine based polymer B is prepared from by the raw material of following ratio of weight and number: 10 ~ 20 parts of vinyl monomers, 20 ~ 35 parts of cationic monomers, 0 ~ 15 part, alkali, 0.5 ~ 2 part of initiator, 40 ~ 70 parts, water;
Described aminated compounds is alcamine compound or polyamine compounds.
Described aminated compounds is the one in dimethylamine, Trimethylamine 99, diethylenetriamine, triethylene tetramine, tetraethylene pentamine, polyethylene polyamine, thanomin, diethanolamine, trolamine.
Described vinyl monomer is the one in vinylformic acid, acrylamide, 2-acrylamido-2-methylsulphonic acid, allyl sulphonic acid.
Described cationic monomer is the one in diallyldimethylammonium chloride, allyl group trimethyl ammonium chloride.
Described initiator is one or more in Potassium Persulphate, ammonium persulphate, sodium bisulfite, S-WAT.
Described alkali is one or both in sodium hydroxide, potassium hydroxide.
The preparation method of compound polyamine shale control agent for aforementioned drilling fluid, comprises the steps:
(1) prepare amine based polymer A: the each feed composition that takes amine based polymer A by proportioning, aminated compounds, part water are joined in the first reactor, again under agitation condition, in the first reactor, slowly drip epoxy chloropropane, after being added dropwise to complete, the first reactor is warming up to 40 ~ 65 DEG C, initiator is mixed with water simultaneously, then in the first reactor, add the initiator mixing with water, insulated and stirred 4h, obtains amine based polymer A;
(2) amine based polymer B: the each feed composition that takes amine based polymer B by proportioning, get part water and put into the second reactor, in the second reactor, add vinyl monomer again, being stirred well to vinyl monomer dissolves, in the second reactor, slowly add cationic monomer again, after stirring and dissolving, to pH value to 7 ~ 10 that add alkali in the second reactor and regulate solution in the second reactor, again the second reactor is warming up to 40 ~ 65 DEG C, initiator is mixed with water simultaneously, then in the second reactor, add the initiator mixing with water, insulated and stirred 4h, obtain amine based polymer B,
(3) amine based polymer B prepared by the amine based polymer A being prepared by step 1 and step 2 is mixed in proportion, and stirs, and obtains product.
In described step 3, churning time is 0.5-5h.
The present invention is directed to the deficiencies in the prior art, compound polyamine shale control agent and preparation method thereof for a kind of drilling fluid is provided, this inhibitor is by amine based polymer A, the composite gained of amine based polymer B.Drilling fluid provided by the present invention is yellow liquid by compound polyamine shale control agent outward appearance, and effective content is 30% ~ 60%, and all the other are water.Inhibitor of the present invention can effectively suppress shale hydration and wilkinite pulping, simultaneously to the dehydration performance of drilling fluid without considerable influence, can play and keep the effect of wellbore stability, prevent the appearance of the down hole problems such as undergauge, ensure that drilling well carries out smoothly.Meanwhile, inhibitor restraint of the present invention is strong, and temperature resistance reaches 180 DEG C, has good high temperature resistant property, and meanwhile, it is little on the rheology on drilling fluid and dehydration impact, and compatibleness is good.The present invention also provides the preparation method of aforementioned drilling fluid with compound polyamine shale control agent, and the method is simple to operate, can be applied directly in drilling fluid without aftertreatment, is easy to realize industrialized mass production.
In sum, owing to having adopted technique scheme, the present invention has following beneficial effect.
1, drilling fluid of the present invention has strong rejection capability with compound polyamine shale control agent, and it is by amine based polymer A and the composite gained of amine based polymer B.Wherein, amine based polymer A molecular weight is little, and on molecular chain with multiple amine groups, can enter between clay layer and carry out multipoint adsorption, can effectively adjacent clay lamella be strapped in together, thereby stop water molecules to enter, prevent aquation dispersion, play strong restraining effect.The molecular weight of amine based polymer B is slightly large, in its molecular chain of while, also with amine groups, can adsorb on clay surface and wrap up, and prevents clay aquation, plays restraining effect.Meanwhile, the present invention of amine based polymer A and the composite system of amine based polymer B, two kinds of restraining effect are worked in coordination with, and can play the rejection stronger compared with like product.
2, drilling fluid provided by the present invention has stronger heat-resisting property with compound polyamine shale control agent, and temperature resistance can reach 180 DEG C; Meanwhile, compatibleness is good, less on the impact such as rheological and dehydration of drilling fluid.
3, inhibitor of the present invention is completely water-soluble, and non-foaming, and usage quantity is little, can effectively reduce the cost of drilling fluid, reduces the generation of the down hole problems such as borehole well instability, bit balling and undergauge bit freezing, and guarantee drilling well is carried out smoothly.
4, raw material of the present invention is cheaply easy to get, and cost is low, for the production cost that reduces inhibitor, significant.
5, preparation method of the present invention is simple, easy to operate, low for equipment and environmental requirement, and the inhibitor of preparation is without carrying out aftertreatment, easily realizes suitability for industrialized production.
Embodiment
Disclosed all features in this specification sheets, or step in disclosed all methods or process, except mutually exclusive feature and/or step, all can combine by any way.
Disclosed arbitrary feature in this specification sheets, unless narration especially all can be replaced by other equivalences or the alternative features with similar object.,, unless narration especially, each feature is an example in a series of equivalences or similar characteristics.
Embodiment 1
(1) prepare amine based polymer A
To the water that adds 250kg in the first reactor, take the diethylenetriamine of 125kg, slowly join in the first reactor, be uniformly mixed.Then, take the epoxy chloropropane of 75kg, slowly drop in the first reactor, dropping process completes in 1 ~ 2h, and outside needs open cold water cycle simultaneously, keeps the first temperature of reaction kettle in dropping process below 90 DEG C.Take 1.5kg sodium bisulfite, 3.5kg ammonium persulphate is dissolved in the water of 50kg, the first initiator solution, in the time of the first temperature of reaction kettle to 40 ~ 65 DEG C, to the first initiator solution that adds preparation in the first reactor, insulation reaction 4h, obtains amine based polymer A.Distilled water or pure water for hydromining.
(2) prepare amine based polymer B
First in the second reactor, add the water of 400kg, then get the vinylformic acid (AA) of 150kg, be added in the second reactor, fully after stirring and dissolving, in the second reactor, add the diallyldimethylammonium chloride (DMDAAC) of 250kg again, and stir, obtain solution one.Add 100kg potassium hydroxide (KOH) to solution one again, pH value to 7 ~ 10 of regulator solution one.Taking the sodium bisulfite of 2.5kg and the Potassium Persulphate of 2.5kg is dissolved in the water of 100kg, obtain the second initiator solution, in the time that the second temperature of reaction kettle rises to 40 ~ 65 DEG C, to the second initiator solution that adds preparation in the second reactor, and at this temperature insulation reaction 4h, obtain amine based polymer B.
(3) preparing product
The amine based polymer B that amine based polymer A prepared by step 1 is prepared with step 2 stirs 0.5 ~ 5h to after mixing by weight 4:6, obtains product.
Embodiment 2
(1) prepare amine based polymer A
To the water that adds 320kg in the first reactor, take the dimethylamine of 184kg, slowly join in the first reactor, be uniformly mixed.Then, take the epoxy chloropropane of 216kg, slowly drop in the first reactor, dropping process completes in 1 ~ 2h, and outside needs open cold water cycle simultaneously, keeps the first temperature of reaction kettle in dropping process below 90 DEG C.Take in the water that 12kg S-WAT is dissolved in 80kg, obtain the first initiator solution, in the time of the first temperature of reaction kettle to 40 ~ 65 DEG C, to the first initiator solution that adds preparation in the first reactor, insulation reaction 4h, obtains amine based polymer A.
(2) prepare amine based polymer B
First to the water that adds 750kg in the second reactor, get again 180kg 2-acrylamide-2-methylpro panesulfonic acid (AMPS), be added in the second reactor, fully after stirring and dissolving, in the second reactor, add 315kg diallyldimethylammonium chloride (DMDAAC) again, and stir, obtain solution one.Add 105kg sodium hydroxide (NaOH) to solution one again, pH value to 7 ~ 10 of regulator solution one.Taking 5kg S-WAT and 10kg ammonium persulphate is dissolved in 150kg water, the second initiator solution, in the time that the second temperature of reaction kettle rises to 40 ~ 65 DEG C, to the second initiator solution that adds preparation in the second reactor, and at this temperature insulation reaction 4h, obtain amine based polymer B.
(3) preparing product
The amine based polymer B that amine based polymer A prepared by step 1 is prepared with step 2 stirs 0.5 ~ 5h to after mixing by weight 5:5, obtains product.
Embodiment 3
(1) prepare amine based polymer A
To the water that adds 350kg in the first reactor, take 300kg trolamine, slowly join in the first reactor, be uniformly mixed.Then, take the epoxy chloropropane of 250kg, slowly drop in the first reactor, dropping process completes in 1 ~ 2h, and outside needs open cold water cycle simultaneously, keeps the first temperature of reaction kettle in dropping process below 90 DEG C.Take 2.5kg S-WAT, 2.5kg Potassium Persulphate is dissolved in 100kg water, obtains the first initiator solution, in the time of the first temperature of reaction kettle to 40 ~ 65 DEG C, to the first initiator solution that adds preparation in the first reactor, insulation reaction 4h, obtains amine based polymer A.
(2) prepare amine based polymer B
First in the second reactor, add the water of 450kg, then get 140kg acrylamide (AM), be added in the second reactor, fully after stirring and dissolving, in the second reactor, add 300kg allyl group trimethyl ammonium chloride (TMAAC) again, and stir, obtain solution one.Add 10kg potassium hydroxide (KOH) to solution one again, pH value to 7 ~ 10 of regulator solution one.Take 5kg S-WAT, 10kg Potassium Persulphate is dissolved in 100kg water, the second initiator solution, in the time that the second temperature of reaction kettle rises to 40 ~ 65 DEG C, to the second initiator solution that adds preparation in the second reactor, and at this temperature insulation reaction 4h, obtain amine based polymer B.
(3) preparing product
The amine based polymer B that amine based polymer A prepared by step 1 is prepared with step 2 stirs 0.5 ~ 5h to after mixing by weight 6:4, obtains product.
Embodiment 4
(1) prepare amine based polymer A
To the water that adds 450kg in the first reactor, take 495kg triethylene tetramine, slowly join in the first reactor, be uniformly mixed.Then, take 405kg epoxy chloropropane, slowly drop in the first reactor, dropping process completes in 1 ~ 2h, and outside needs open cold water cycle simultaneously, keeps the first temperature of reaction kettle in dropping process below 90 DEG C.Take 10kg sodium bisulfite, 5kg ammonium persulphate is dissolved in 150kg water, obtains the first initiator solution, in the time of the first temperature of reaction kettle to 40 ~ 65 DEG C, to the first initiator solution that adds preparation in the first reactor, insulation reaction 4h, obtains amine based polymer A.
(2) prepare amine based polymer B
First in the second reactor, add the water of 450kg, then get 130kg allyl sulphonic acid, be added in the second reactor, fully after stirring and dissolving, in the second reactor, add 230kg diallyldimethylammonium chloride (DMDAAC) again, and stir, obtain solution one.Add 90kg potassium hydroxide (KOH) to solution one again, pH value to 7 ~ 10 of regulator solution one.Take 7.5kg S-WAT, 7.5kg ammonium persulphate is dissolved in 100kg water, the second initiator solution, in the time that the second temperature of reaction kettle rises to 40 ~ 65 DEG C, to the second initiator solution that adds preparation in the second reactor, and at this temperature insulation reaction 4h, obtain amine based polymer B.
(3) preparing product
The amine based polymer B that amine based polymer A prepared by step 1 is prepared with step 2 stirs 0.5 ~ 5h to after mixing by weight 3:7, obtains product.
Embodiment 5
(1) prepare amine based polymer A
To the water that adds 900kg in the first reactor, take 400kg thanomin, slowly join in the first reactor, be uniformly mixed.Then, take 500kg epoxy chloropropane, slowly drop in the first reactor, dropping process completes in 1 ~ 2h, and outside needs open cold water cycle simultaneously, keeps the first temperature of reaction kettle in dropping process below 90 DEG C.Take 10kg S-WAT and be dissolved in 200kg water, obtain the first initiator solution, in the time of the first temperature of reaction kettle to 40 ~ 65 DEG C, to the first initiator solution that adds preparation in the first reactor, insulation reaction 4h, obtains amine based polymer A.
(2) prepare amine based polymer B
First in the second reactor, add the water of 400kg, then get 180kg vinylformic acid (AA), be added in the second reactor, fully after stirring and dissolving, in the second reactor, add 220kg allyl group trimethyl ammonium chloride (TMAAC) again, and stir, obtain solution one.Add 100kg sodium hydroxide (NaOH) to solution one again, the pH value of regulator solution one.Take 5kg S-WAT, 10kg ammonium persulphate is dissolved in 100kg water, the second initiator solution, in the time that the second temperature of reaction kettle rises to 40 ~ 65 DEG C, to the second initiator solution that adds preparation in the second reactor, and at this temperature insulation reaction 4h, obtain amine based polymer B.
(3) preparing product
The amine based polymer B that amine based polymer A prepared by step 1 is prepared with step 2 stirs 0.5 ~ 5h to after mixing by weight 6:4, obtains product.
Contrast experiment
Buy from Research Institute of Nanjing Chemical Industry Group taking inhibitor NH-1() be contrast sample 1, taking JA-II (buying from Chengdu Xi Youhuawei Science and Technology Ltd.) as contrast sample 2.
Performance evaluation
1, the heat yield evaluation of rolling back
The 1.1 heat yield evaluation method of rolling back
Mud shale ore after air-dry is broken into pieces to make 6-10 object particle for subsequent use; Measure two parts, 350mL water, a mud shale particle that adds wherein 50.0g to prepare; Portion adds after 5.25g sample stirring and dissolving, then the mud shale particle that adds 50.0g to prepare; All pack into after digestion tank, at 180 DEG C, heat is rolled after 16h, cooling taking-up, cross 40 mesh sieves, collect the mud shale remaining, after water rinses, at 100 DEG C, forced air drying is to constant weight, weighs residue mud shale quality G, by R=(G/50) * 100% calculate the heat yield of rolling back; Wherein: R is the heat yield of rolling back; G is that heat is rolled rear residue mud shale quality.
1.2 heat are rolled determination of recovery rates
Above-described embodiment 1 ~ 5 and contrast sample 1, contrast sample 2 are evaluated by the heat yield evaluation method of rolling back, and result is as shown in table 1 below.
The table 1 heat yield measurement result of rolling back
2, relative inhibition evaluation
2.1 relative inhibition evaluation methods
Measure 350mL water, slowly add wherein the secondary wilkinite of 52.5g, under 10000r/min, stir 20min, cooling taking-up after aging 16h at 180 DEG C; Under 10000r/min, stir 5min again, at room temperature test the Ф of base slurry
100reading.Measure the water of 350mL, add wherein 5.25g polyamine sample, after stirring and dissolving, slowly add the secondary wilkinite of 52.5g, under 10000r/min, stirring 20min, cooling taking-up after aging 16h at 180 DEG C; Under 10000r/min, stir 5min again, the Ф ' of testing experiment slurry at 25 DEG C
100reading, by formula X=(Ф
100-Ф '
100)/Ф
100calculate relative inhibition; In formula, X is relative inhibition; Ф
100for base slurry aging after at the reading of 100r/min; Ф '
100for test slurry aging after at the reading of 100r/min.
2.2 relative inhibitions are measured
Above-described embodiment 1 ~ 5 and contrast sample 1, contrast sample 2 are evaluated by relative inhibition evaluation method, and result is as shown in table 2 below.
Table 2 relative inhibition measurement result
3, dehydration evaluation
3.1 dehydration evaluation methods
Measure 400mL water, add wherein 16g wilkinite and 0.8g anhydrous sodium carbonate, high-speed stirring 20min under 10000r/min, is a base slurry, places 24h for subsequent use; Get a base slurry, add wherein 6g polyamine sample, under 10000r/min after high-speed stirring 20min, aging 16h at 180 DEG C, cooling rear taking-up, under 10000r/min, after high-speed stirring 5min, press the method for 7.2 joints in GB/T 16783.1-2006 and test the API filtration (room temperature/0.69MPa) after high temperature ageing.
3.2 dehydrations are measured
Above-described embodiment 1 ~ 5 and contrast sample 1, contrast sample 2 are evaluated by dehydration evaluation method, and result is as shown in table 3 below.
Table 3 dehydration measurement result
The present invention is not limited to aforesaid embodiment.The present invention expands to any new feature or any new combination disclosing in this manual, and the arbitrary new method disclosing or step or any new combination of process.
Claims (8)
1. compound polyamine shale control agent for drilling fluid, is characterized in that, comprises amine based polymer A, amine based polymer B, and the weight ratio of described amine based polymer A, amine based polymer B is 3 ~ 6:7 ~ 4;
Described amine based polymer A is prepared from by the raw material of following ratio of weight and number: 12 ~ 27 parts of epoxy chloropropane, 18 ~ 33 parts of aminated compoundss, 0.5 ~ 2 part of initiator, 40 ~ 70 parts, water;
Described amine based polymer B is prepared from by the raw material of following ratio of weight and number: 10 ~ 20 parts of vinyl monomers, 20 ~ 35 parts of cationic monomers, 0 ~ 15 part, alkali, 0.5 ~ 2 part of initiator, 40 ~ 70 parts, water;
Described aminated compounds is alcamine compound or polyamine compounds.
2. according to compound polyamine shale control agent for the drilling fluid described in right 1, it is characterized in that, described aminated compounds is the one in dimethylamine, Trimethylamine 99, diethylenetriamine, triethylene tetramine, tetraethylene pentamine, polyethylene polyamine, thanomin, diethanolamine, trolamine.
3. according to compound polyamine shale control agent for the drilling fluid described in right 1 or 2, it is characterized in that, described vinyl monomer is the one in vinylformic acid, acrylamide, 2-acrylamido-2-methylsulphonic acid, allyl sulphonic acid.
4. according to compound polyamine shale control agent for the drilling fluid described in right 1, it is characterized in that, described cationic monomer is the one in diallyldimethylammonium chloride, allyl group trimethyl ammonium chloride.
5. according to compound polyamine shale control agent for the drilling fluid described in right 1, it is characterized in that, described initiator is one or more in Potassium Persulphate, ammonium persulphate, sodium bisulfite, S-WAT.
6. according to the compound polyamine shale control agent for drilling fluid described in right 1-5 any one, it is characterized in that, described alkali is one or both in sodium hydroxide, potassium hydroxide.
7. the preparation method with compound polyamine shale control agent according to drilling fluid described in right 1-6 any one, it is characterized in that, comprise the steps: that (1) prepare amine based polymer A: the each feed composition that takes amine based polymer A by proportioning, by aminated compounds, part water joins in the first reactor, again under agitation condition, in the first reactor, slowly drip epoxy chloropropane, after being added dropwise to complete, the first reactor is warming up to 40 ~ 65 DEG C, initiator is mixed with water simultaneously, then in the first reactor, add the initiator mixing with water, insulated and stirred 4h, obtain amine based polymer A,
(2) amine based polymer B: the each feed composition that takes amine based polymer B by proportioning, get part water and put into the second reactor, in the second reactor, add vinyl monomer again, being stirred well to vinyl monomer dissolves, in the second reactor, slowly add cationic monomer again, after stirring and dissolving, to pH value to 7 ~ 10 that add alkali in the second reactor and regulate solution in the second reactor, again the second reactor is warming up to 40 ~ 65 DEG C, initiator is mixed with water simultaneously, then in the second reactor, add the initiator mixing with water, insulated and stirred 4h, obtain amine based polymer B,
(3) amine based polymer B prepared by the amine based polymer A being prepared by step 1 and step 2 is mixed in proportion, and stirs, and obtains product.
8. the preparation method with compound polyamine shale control agent according to drilling fluid described in right 7, is characterized in that, in described step 3, churning time is 0.5-5h.
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Cited By (21)
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| CN104448100A (en) * | 2014-11-24 | 2015-03-25 | 卫辉市化工有限公司 | Preparation method of polymer inhibitor for drilling fluid |
| CN105038738A (en) * | 2015-07-14 | 2015-11-11 | 中国石油天然气集团公司 | High-temperature resistant efficient mud shale inhibitor for drilling fluid and preparation method therefor |
| CN105086955A (en) * | 2015-08-27 | 2015-11-25 | 中国石油集团渤海钻探工程有限公司 | Polyamine inhibitor for water-based drilling fluid and method for preparing polyamine inhibitor |
| CN105670574A (en) * | 2014-11-21 | 2016-06-15 | 中石化胜利石油工程有限公司钻井工艺研究院 | Drilling fluid ether-amine compound inhibitor and preparation method thereof |
| CN105694841A (en) * | 2015-12-31 | 2016-06-22 | 浙江大川新材料股份有限公司 | Preparation method of oil extraction sand carrying liquid treating agent |
| CN105802592A (en) * | 2016-04-07 | 2016-07-27 | 西南石油大学 | Shale inhibitor as well as preparation method and application thereof |
| CN106093107A (en) * | 2016-07-07 | 2016-11-09 | 中国石油集团川庆钻探工程有限公司 | Evaluation method of shale inhibitor for drilling fluid |
| CN106608946A (en) * | 2015-10-21 | 2017-05-03 | 中国石油化工股份有限公司 | Tackifier copolymerization associate used for drilling fluid and preparation method of tackifier copolymerization associate |
| CN108070364A (en) * | 2017-12-08 | 2018-05-25 | 成都劳恩普斯科技有限公司 | A kind of water-base drilling fluid potent shale control agent aqua, pulvis and preparation method thereof and inhibitor |
| CN109694697A (en) * | 2017-10-23 | 2019-04-30 | 中石化石油工程技术服务有限公司 | A kind of drilling fluid polyamine shale inhibitor and preparation method thereof and drilling fluid |
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| CN115353618A (en) * | 2022-08-18 | 2022-11-18 | 桥封科技(成都)有限公司 | Temperature-resistant shale inhibitor and preparation method thereof |
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| CN109694697A (en) * | 2017-10-23 | 2019-04-30 | 中石化石油工程技术服务有限公司 | A kind of drilling fluid polyamine shale inhibitor and preparation method thereof and drilling fluid |
| CN108070364A (en) * | 2017-12-08 | 2018-05-25 | 成都劳恩普斯科技有限公司 | A kind of water-base drilling fluid potent shale control agent aqua, pulvis and preparation method thereof and inhibitor |
| CN110317586A (en) * | 2018-03-29 | 2019-10-11 | 晋州市茂源钻采技术开发有限公司 | A kind of formula and preparation method thereof of drilling fluid shale potent inhibitor |
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| CN110607170A (en) * | 2018-06-15 | 2019-12-24 | 中国石油天然气集团有限公司 | Shale inhibitors for water-based drilling fluids for shale formations |
| CN110607170B (en) * | 2018-06-15 | 2023-04-25 | 中国石油天然气集团有限公司 | Shale inhibitor for shale formation water-based drilling fluid |
| CN111087981A (en) * | 2018-12-25 | 2020-05-01 | 北京石大博诚科技有限公司 | Inhibitor for drilling fluid and preparation method thereof |
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| CN110981996A (en) * | 2019-12-11 | 2020-04-10 | 荆州市学成实业有限公司 | Preparation method of high-performance anti-collapse environment-friendly inhibitor for drilling fluid |
| CN110981996B (en) * | 2019-12-11 | 2021-12-21 | 荆州市学成实业有限公司 | Preparation method of high-performance anti-collapse environment-friendly inhibitor for drilling fluid |
| CN113527550A (en) * | 2021-05-24 | 2021-10-22 | 中国石油化工集团有限公司 | Plugging film-forming polyamine for drilling fluid, preparation method of plugging film-forming polyamine and drilling fluid |
| CN115403786A (en) * | 2021-05-28 | 2022-11-29 | 中石化石油工程技术服务有限公司 | Humic acid shale inhibitor and preparation method and application thereof |
| CN115403786B (en) * | 2021-05-28 | 2023-09-19 | 中石化石油工程技术服务有限公司 | Humic acid shale inhibitor and preparation method and application thereof |
| CN113372888B (en) * | 2021-07-02 | 2022-06-07 | 北京大德广源石油技术服务有限公司 | Preparation method of oil-base-like drilling fluid and product thereof |
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| CN113896831A (en) * | 2021-11-05 | 2022-01-07 | 中国石油大学(华东) | Double-effect inhibitor for natural gas hydrate drilling fluid and preparation method and application thereof |
| CN115353618A (en) * | 2022-08-18 | 2022-11-18 | 桥封科技(成都)有限公司 | Temperature-resistant shale inhibitor and preparation method thereof |
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