A kind of Environment-protecting Drilling Fluids polyaminoacid class thinner and preparation method thereofTechnical field
The present invention relates to a kind of Environment-protecting Drilling Fluids polyaminoacid class thinners and preparation method thereof, belong to oil-gas explorationWith development technique field.
Background technique
Additive for drilling fluid is important one of oil field chemical, is the substance for being adjustable property of drilling fluid.For eachMouth oil/gas well, it is necessary to according to certain formula, be configured to required brill using various raw material with slurry and chemical treatmentsWell liquid, or add them in drilling fluid currently in use, to adjust and safeguard the performance of drilling fluid at any time.It is general nextIt says, drilling fluid raw material with slurry refer in middle dosage biggish basic component, such as bentonite, water, oil and barite with slurry etc..Inorganic agent then refers to be added for improving and stablizing property of drilling fluid, or to meet the chemistry that certain performance of drilling fluid is needed and is addedAdd agent.Inorganic agent is the core of drilling fluid, and often seldom dosage will generate strong influence to property of drilling fluid.
The main function of thinner is the Preferential adsorption place weak in clay edge aquation, and hydrophilic group increases these groundThe hydrated sheath of side weakens or breaks the reticular structure of clay particle composition, releases Free water, and the flowing reduced between viscous particle rubsResistance is wiped, the shear force of drilling fluid and viscosity are reduced.Thinner can inhibit drilling cuttings hydration swelling and dispersion, then can be reduced solidGrain number mesh is also beneficial to reduce drilling fluid viscosity, improves mobility.Although solid control equipment can effectively clear various in drilling fluidSolid phase plays a part of to adjust drilling fluid rheology, reduces thinner usage amount, but the use of live solid control equipment is paid no attention to nowThink, the effect of thinner is also just more important.
Drilling fluid thinner both domestic and external is various in style, but as oil-gas exploration and development geological conditions is more complicated, existingThe latent defect of drilling fluid thinner constantly exposes.Although natural polymer subclass thinner raw material is easy to get, is cheap, defectIt is more, there are some temperature resistances, anti-salt property are poor, or even contain toxic component, such as ferrochrome lignosulfonate.At present field use compared withMore polymer drilling fluid thinners, treatment effect is preferable, and price is higher.Some thinners, laboratory evaluation viscosity reducing effect is good,Dose need to be increased when field application, if dosage is too small, can be disposed of quickly with landwaste, polymer, maintenance period is short, leadsDrilling cost is caused to increase.Furthermore it is not degradable with the polymer that the monomers such as acrylic acid synthesize, it pollutes the environment, is unfavorable for environmental protection.
Therefore, a kind of efficient and cheap is invented, biodegradable viscosity depressant for drilling fluid is oil-gas field development instantlyImportant directions.
Summary of the invention
For some problems existing in the prior art, the present invention provides a kind of Environment-protecting Drilling Fluids polyaminoacid classesThinner, the polyaminoacid class thinner by weight, including following raw material: amino acid A30~35 part, amino acid B 10~13 parts, 10~15 parts of catalyst, 20~25 parts of sodium hydroxide, 15~20 parts of initiator, 100~120 parts of water；The amino acidA is acidic amino acid, and the amino acid B includes basic amino acid or polar neutral amino acid.
As a preferred technical solution of the present invention, the weight part ratio of the amino acid A, amino acid B and initiator is(2~4): (0.5~1.5): (0.5~2).
As a kind of preferred technical solution of the present invention, the weight part ratio of the amino acid A, amino acid B and initiatorFor (2.5~3.5): 1:(1.3~1.8).
As a preferred technical solution of the present invention, the acidic amino acid is L-Aspartic acid, one in glutamic acidKind.
As a preferred technical solution of the present invention, the basic amino acid is one of lysine, arginine, instituteStating polar neutral amino acid is one of asparagine, glutamine.
As a kind of most preferred technical solution of the present invention, the amino acid B is lysine.
As a preferred technical solution of the present invention, the initiator is amino acid C.
As a preferred technical solution of the present invention, the amino acid C is the amino acid containing aromatic ring structure.
As a kind of most preferred technical solution of the present invention, the amino acid containing aromatic ring structure is selected from phenylpropyl alcohol ammoniaOne of acid, tryptophan, tyrosine.
As a preferred technical solution of the present invention, the catalyst is one of phosphoric acid, polyphosphoric acids.
Second aspect of the present invention provides a kind of preparation method of Environment-protecting Drilling Fluids polyaminoacid class thinner, asA preferred technical solution of the present invention, it is described the preparation method is as follows:
(1) amino acid A, catalyst, 5~10 parts of water are sequentially added into reaction kettle, reaction 2 at 170 DEG C~200 DEG C~5h；
(2) into step 1, amino acid B is added in reaction kettle, is reacted 2~5h at 170 DEG C~200 DEG C, is obtained intermediate；
(3) intermediate obtained in step 2 reaction kettle is dissolved in remaining water, keeps being added at 10~60 DEG C of temperature and causesAgent is stirred to react 2~5h；
(4) sodium hydroxide is added to step 3 reaction kettle, adjusting pH value is 8~11 to get polyaminoacid class thinner.
As a kind of preferred technical solution of the present invention, the system of Environment-protecting Drilling Fluids polyaminoacid class thinnerPreparation Method is as follows:
(1) amino acid A, catalyst, 5~10 parts of water are sequentially added into reaction kettle, reaction 2.5 at 175 DEG C~180 DEG C~4h；
(2) into step 1, amino acid B is added in reaction kettle, is reacted 2.5~4.5h at 175 DEG C~180 DEG C, is obtained intermediate；
(3) intermediate obtained in step 2 reaction kettle is dissolved in remaining water, keeps being added at 20~40 DEG C of temperature and causesAgent is stirred to react 3h；
(4) sodium hydroxide is added to step 3 reaction kettle, adjusting pH value is 9 to get polyaminoacid class thinner.
As a kind of most preferred technical solution of the present invention, the system of Environment-protecting Drilling Fluids polyaminoacid class thinnerPreparation Method is as follows:
(1) amino acid A, catalyst, 8 parts of water are sequentially added into reaction kettle, react 3.5h at 178 DEG C；
(2) into step 1, amino acid B is added in reaction kettle, is reacted 4h at 180 DEG C, is obtained intermediate；
(3) intermediate obtained in step 2 reaction kettle is dissolved in remaining water, keeps that initiator is added at 23 DEG C of temperature,It is stirred to react 3h；
(4) sodium hydroxide is added to step 3 reaction kettle, adjusting pH value is 9 to get polyaminoacid class thinner.
The utility model has the advantages that having viscosity break ratio high using amino acid as the polyaminoacid thinner of Material synthesis, have anti-wellSalt, anticalcium ability, as the increase of dosage greatly improves the dispersion performance of bentonite slurry.There is good temperature resistance energy simultaneouslyPower, in 120 DEG C of heat rolling experiment, viscosity break ratio still can reach 65% or more.Compared to traditional FCSL, polyacrylic thinnerThere is better viscosity reducing capability, has good compatibility with other drilling fluid additives.Polyaminoacid thinner has good simultaneouslyGood corrosion inhibition prevents drilling tool drilling rod from corroding.Polyaminoacid can be voluntarily biodegradable as environmental type thinner, not dirtyDrilling well soil nearby is contaminated, the environmental protection concept of oil-gas field development instantly is met.
Specific embodiment
Below in conjunction with the embodiment of the present invention, technical scheme in the embodiment of the invention is clearly and completely described,Obviously, described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Based in the present inventionEmbodiment, every other embodiment obtained by those of ordinary skill in the art without making creative efforts, allBelong to the scope of protection of the invention, illustrate the present invention below by way of specific embodiment, but is not limited to given below specificEmbodiment.
The present invention provides a kind of Environment-protecting Drilling Fluids polyaminoacid class thinner, the polyaminoacid class thinner is pressedParts by weight meter, including following raw material: amino acid A30~35 part, 10~13 parts of amino acid B, 10~15 parts of catalyst, hydroxide20~25 parts of sodium, 15~20 parts of initiator, 100~120 parts of water；The amino acid A is acidic amino acid, the amino acid B packetInclude basic amino acid or polar neutral amino acid.
In a preferred embodiment, the weight part ratio of the amino acid A, amino acid B and initiator is (2~4):(0.5~1.5): (0.5~2).
In a kind of preferred embodiment, the weight part ratio of the amino acid A, amino acid B and initiator is (2.5~3.5): 1:(1.3~1.8).
During the experiment it is found by the applicant that polyaminoacid thinner performance and molecular structure have much relations.The aminoThe weight part ratio of sour A, amino acid B and initiator are as follows: (2~4): (0.5~1.5): when (0.5~2), the viscosity break ratio of thinner is obtainedTo further increasing, conjecture the reason is that: polyaminoacid thinner contains-COO- ,-NH2 isopolarity group and-CH2- nonpolarity baseGroup, power is different the effects of due to gravitation of the different groups in drilling fluid, repulsion, has polyaminoacid molecule in drilling fluidDifferent extended conformations, thus there is different absorption properties to the clay of different shape.The amino acid A, amino acid B and drawSend out the weight part ratio of agent are as follows: (2.5~3.5): 1:(1.3~1.8) when, the polar group and non-polar group in molecule are with certainRatio coexist, just be suitble to different shape clay adsorption entails, to increase the thickness of clay particle surface hydration shellDegree enhances the mutually exclusive power between clay particle, removes the space net structure formed between clay particle, releases freedomWater makes the viscosity reducing effect of polyaminoacid maintain optimum state.
In a preferred embodiment, the acidic amino acid is one of L-Aspartic acid, glutamic acid.
In a kind of most preferred embodiment, the amino acid A is L-Aspartic acid.
In a kind of most preferred embodiment, the parts by weight of the L-Aspartic acid are 33 parts.
In a preferred embodiment, the L-Aspartic acid be purchased from Guangzhou Hu Ao Chemical Co., Ltd., No. CASFor 56-84-8.
In a preferred embodiment, the basic amino acid is one of lysine, arginine, the polarityNeutral amino acid is one of asparagine, glutamine.
Applicants have discovered that absorption of the polymer individually generated by L-Aspartic acid on clay particle is less, viscosity reductionRate reduces.After amino acid B is added, amino acid B and aspartic acid form block polymer, on the one hand which is adsorbed on clayOn particle, the reticular structure formed between clay particle is broken, while reacting shape with the other polymers in drilling fluid systemAt stable complex compound, the reticular structure for interacting and being formed between other polymers has been broken；The especially described amino acid BWhen for lysine, obtained polyaminoacid class thinner viscosity break ratio promoted it is most significant, conjecture be because are as follows: the thinner exists firstParticle surface forms one layer thin of aquation Cation adsorption layer, and it is dense that subsequent thinner by absorption layer surface point is gradually diffused into solutionIt spends uniform place and forms diffusion layer, adsorption layer respectively comes with opposite charge with diffusion layer, when the amino acid B is lysine,Repulsive force between adsorption layer and the current potential official post clay gel grain of diffusion layer increases, so that the viscosity of drilling fluid be made to reduce, flowsProperty improves.
In a kind of most preferred embodiment, the amino acid B is lysine.
In a kind of most preferred embodiment, the parts by weight of the lysine are 11 parts.
In a kind of most preferred embodiment, the lysine be purchased from Hubei Yuancheng Saichuang Technology Co., Ltd., No. CASFor 56-87-1.
In one embodiment, the substitute of the lysine is asparagine.
In one embodiment, the asparagine is purchased from Wuhan Xin Weiye Chemical Co., Ltd., and No. CAS is5794-13-8。
In one embodiment, the substitute of the lysine is glutamine.
In one embodiment, the glutamine is purchased from Nanjing Tai Ye Biotechnology Co., Ltd, and No. CAS is61348-28-5。
In a preferred embodiment, the initiator is amino acid C.
In a preferred embodiment, the amino acid C is the amino acid containing aromatic ring structure.
In a preferred embodiment, the amino acid containing aromatic ring structure be selected from phenylalanine, tryptophan,One of tyrosine.
Applicants have discovered that after amino acid A and amino acid B polymerize cyclization under the effect of the catalyst, after initiator is addedPolyamide open loop is promoted to form the polymer containing rigid radical, due to containing a large amount of-COO on polymer molecular chain-、-CONHGroup is adsorbed on positively charged clay particle surface, enhances the phase repulsive interaction between clay, while polar group makes clayThick hydrated sheath is formed on the end face of particle, weakens end-end between clay, and the connection of end-face reduces the viscosity of drilling fluid.The applicant has been surprisingly found that, when especially initiator is tryptophan, in 120 DEG C of heat rolling experiment, viscosity break ratio fall is veryIt is few.Conjecture reason may be: when thinner just starts to contact with clay, loose adsorption layer is quickly formed in surface of clay,With the extension of time, surface of clay is gradually all covered, the presence of active group can enhance fragrance in tryptophan at this timeThe coplanarity of interannular finally promotes thinner to form fine and close multilayer adsorption layer in surface of clay, makes thinner under hot conditionsStill there is high viscosity break ratio.
In a kind of most preferred embodiment, the initiator is tryptophan.
In a kind of most preferred embodiment, the parts by weight of the tryptophan are 18 parts.
In a kind of most preferred embodiment, the tryptophan is purchased from Hubei Ju Sheng Science and Technology Ltd., and No. CAS is73-22-3。
In one embodiment, the substitute of the tryptophan is phenylalanine.
In one embodiment, the phenylalanine is purchased from Hubei Yuancheng Saichuang Technology Co., Ltd., and No. CAS is 673-31-4。
In one embodiment, the substitute of the tryptophan is tyrosine.
In one embodiment, the tyrosine is purchased from Hubei Yuancheng Saichuang Technology Co., Ltd., and No. CAS is 60-18-4。
In a preferred embodiment, the catalyst is phosphoric acid, polyphosphoric acids.
In a kind of most preferred embodiment, the catalyst is polyphosphoric acids.
In a kind of most preferred embodiment, the parts by weight of the polyphosphoric acids are 12 parts.
In a kind of most preferred embodiment, the polyphosphoric acids is purchased from Hangzhou Bai Yi Chemical Co., Ltd., and No. CAS is8017-16-1。
Second aspect of the present invention provides a kind of preparation method of Environment-protecting Drilling Fluids polyaminoacid class thinner, oneIn kind of preferred embodiment, it is described the preparation method is as follows:
(1) amino acid A, catalyst, 5~10 parts of water are sequentially added into reaction kettle, reaction 2 at 170 DEG C~200 DEG C~5h；
(2) into step 1, amino acid B is added in reaction kettle, is reacted 2~5h at 170 DEG C~200 DEG C, is obtained intermediate；
(3) intermediate obtained in step 2 reaction kettle is dissolved in remaining water, keeps being added at 10~60 DEG C of temperature and causesAgent is stirred to react 2~5h；
(4) sodium hydroxide is added to step 3 reaction kettle, adjusting pH value is 8~11 to get polyaminoacid class thinner.
In a kind of preferred embodiment, the preparation method of Environment-protecting Drilling Fluids polyaminoacid class thinnerIt is as follows:
(1) amino acid A, catalyst, 5~10 parts of water are sequentially added into reaction kettle, reaction 2.5 at 175 DEG C~180 DEG C~4h；
(2) into step 1, amino acid B is added in reaction kettle, is reacted 2.5~4.5h at 175 DEG C~180 DEG C, is obtained intermediate；
(3) intermediate obtained in step 2 reaction kettle is dissolved in remaining water, keeps being added at 20~40 DEG C of temperature and causesAgent is stirred to react 3h；
(4) sodium hydroxide is added to step 3 reaction kettle, adjusting pH value is 9 to get polyaminoacid class thinner.
In a kind of most preferred embodiment, the preparation method of Environment-protecting Drilling Fluids polyaminoacid class thinnerIt is as follows:
(1) amino acid A, catalyst, 8 parts of water are sequentially added into reaction kettle, react 3.5h at 178 DEG C；
(2) into step 1, amino acid B is added in reaction kettle, is reacted 4h at 180 DEG C, is obtained intermediate；
(3) intermediate obtained in step 2 reaction kettle is dissolved in remaining water, keeps that initiator is added at 23 DEG C of temperature,It is stirred to react 3h；
(4) sodium hydroxide is added to step 3 reaction kettle, adjusting pH value is 9 to get polyaminoacid class thinner.
Embodiment 1
The embodiment of the present invention 1 provides a kind of Environment-protecting Drilling Fluids polyaminoacid class thinner, by weight, preparationRaw material includes 33 parts of L-Aspartic acid, 11 parts of lysine, 12 parts of polyphosphoric acids, 23 parts of sodium hydroxide, 18 parts of tryptophan, water 115Part.
Second aspect of the present invention provides a kind of preparation method of Environment-protecting Drilling Fluids polyaminoacid class thinner, describedThe preparation method is as follows:
(1) L-Aspartic acid, polyphosphoric acids, 8 parts of water are sequentially added into reaction kettle, react 3.5h at 178 DEG C；
(2) into step 1, lysine is added in reaction kettle, is reacted 4h at 180 DEG C, is obtained intermediate；
(3) intermediate obtained in step 2 reaction kettle is dissolved in 107 parts of water, keeps being slowly added to color at 23 DEG C of temperaturePropylhomoserin is stirred to react 3h；
(4) sodium hydroxide is added to step 3 reaction kettle, adjusting pH value is 9 to get polyaminoacid class thinner.
Embodiment 2
The embodiment of the present invention 2 provides a kind of Environment-protecting Drilling Fluids polyaminoacid class thinner, by weight, preparationRaw material includes 30 parts of L-Aspartic acid, 10 parts of lysine, 10 parts of polyphosphoric acids, 20 parts of sodium hydroxide, 15 parts of tryptophan, water 100Part.
Second aspect of the present invention provides a kind of preparation method of Environment-protecting Drilling Fluids polyaminoacid class thinner, describedThe preparation method is as follows:
(1) L-Aspartic acid, polyphosphoric acids, 8 parts of water are sequentially added into reaction kettle, react 3.5h at 178 DEG C；
(2) into step 1, lysine is added in reaction kettle, is reacted 4h at 180 DEG C, is obtained intermediate；
(3) intermediate obtained in step 2 reaction kettle is dissolved in 92 parts of water, keeps being slowly added to color ammonia at 23 DEG C of temperatureAcid is stirred to react 3h；
(4) sodium hydroxide is added to step 3 reaction kettle, adjusting pH value is 9 to get polyaminoacid class thinner.
Embodiment 3
The embodiment of the present invention 3 provides a kind of Environment-protecting Drilling Fluids polyaminoacid class thinner, by weight, preparationRaw material includes 35 parts of L-Aspartic acid, 13 parts of lysine, 15 parts of polyphosphoric acids, 25 parts of sodium hydroxide, 20 parts of tryptophan, water 120Part.
Second aspect of the present invention provides a kind of preparation method of Environment-protecting Drilling Fluids polyaminoacid class thinner, describedThe preparation method is as follows:
(1) L-Aspartic acid, polyphosphoric acids, 8 parts of water are sequentially added into reaction kettle, react 3.5h at 178 DEG C；
(2) into step 1, lysine is added in reaction kettle, is reacted 4h at 180 DEG C, is obtained intermediate；
(3) intermediate obtained in step 2 reaction kettle is dissolved in 112 parts of water, keeps being slowly added to color at 23 DEG C of temperaturePropylhomoserin is stirred to react 3h；
(4) sodium hydroxide is added to step 3 reaction kettle, adjusting pH value is 9 to get polyaminoacid class thinner.
Embodiment 4
The embodiment of the present invention 4 provides a kind of Environment-protecting Drilling Fluids polyaminoacid class thinner, by weight, preparationRaw material includes 33 parts of L-Aspartic acid, 9 parts of lysine, 12 parts of polyphosphoric acids, 23 parts of sodium hydroxide, 18 parts of tryptophan, water 115Part.
Second aspect of the present invention provides a kind of preparation method of Environment-protecting Drilling Fluids polyaminoacid class thinner, describedThe preparation method is as follows:
(1) L-Aspartic acid, polyphosphoric acids, 8 parts of water are sequentially added into reaction kettle, react 3.5h at 178 DEG C；
(2) into step 1, lysine is added in reaction kettle, is reacted 4h at 180 DEG C, is obtained intermediate；
(3) intermediate obtained in step 2 reaction kettle is dissolved in 107 parts of water, keeps being slowly added to color at 23 DEG C of temperaturePropylhomoserin is stirred to react 3h；
(4) sodium hydroxide is added to step 3 reaction kettle, adjusting pH value is 9 to get polyaminoacid class thinner.
Embodiment 5
The embodiment of the present invention 5 provides a kind of Environment-protecting Drilling Fluids polyaminoacid class thinner, by weight, preparationRaw material includes 33 parts of L-Aspartic acid, 15 parts of lysine, 12 parts of polyphosphoric acids, 23 parts of sodium hydroxide, 18 parts of tryptophan, water 115Part.
Second aspect of the present invention provides a kind of preparation method of Environment-protecting Drilling Fluids polyaminoacid class thinner, describedThe preparation method is as follows:
(1) L-Aspartic acid, polyphosphoric acids, 8 parts of water are sequentially added into reaction kettle, react 3.5h at 178 DEG C；
(2) into step 1, lysine is added in reaction kettle, is reacted 4h at 180 DEG C, is obtained intermediate；
(3) intermediate obtained in step 2 reaction kettle is dissolved in 107 parts of water, keeps being slowly added to color at 23 DEG C of temperaturePropylhomoserin is stirred to react 3h；
(4) sodium hydroxide is added to step 3 reaction kettle, adjusting pH value is 9 to get polyaminoacid class thinner.
Embodiment 6
The embodiment of the present invention 6 provides a kind of Environment-protecting Drilling Fluids polyaminoacid class thinner, by weight, preparationRaw material includes 33 parts of L-Aspartic acid, 11 parts of asparagine, 12 parts of polyphosphoric acids, 23 parts of sodium hydroxide, 18 parts of tryptophan, water115 parts.
Second aspect of the present invention provides a kind of preparation method of Environment-protecting Drilling Fluids polyaminoacid class thinner, describedThe preparation method is as follows:
(1) L-Aspartic acid, polyphosphoric acids, 8 parts of water are sequentially added into reaction kettle, react 3.5h at 178 DEG C；
(2) into step 1, asparagine is added in reaction kettle, is reacted 4h at 180 DEG C, is obtained intermediate；
(3) intermediate obtained in step 2 reaction kettle is dissolved in 107 parts of water, keeps being slowly added to color at 23 DEG C of temperaturePropylhomoserin is stirred to react 3h；
(4) sodium hydroxide is added to step 3 reaction kettle, adjusting pH value is 9 to get polyaminoacid class thinner.
Embodiment 7
The embodiment of the present invention 7 provides a kind of Environment-protecting Drilling Fluids polyaminoacid class thinner, by weight, preparationRaw material includes 33 parts of L-Aspartic acid, 11 parts of glutamine, 12 parts of polyphosphoric acids, 23 parts of sodium hydroxide, 18 parts of tryptophan, water115 parts.
Second aspect of the present invention provides a kind of preparation method of Environment-protecting Drilling Fluids polyaminoacid class thinner, describedThe preparation method is as follows:
(1) L-Aspartic acid, polyphosphoric acids, 8 parts of water are sequentially added into reaction kettle, react 3.5h at 178 DEG C；
(2) into step 1, glutamine is added in reaction kettle, is reacted 4h at 180 DEG C, is obtained intermediate；
(3) intermediate obtained in step 2 reaction kettle is dissolved in 107 parts of water, keeps being slowly added to color at 23 DEG C of temperaturePropylhomoserin is stirred to react 3h；
(4) sodium hydroxide is added to step 3 reaction kettle, adjusting pH value is 9 to get polyaminoacid class thinner.
Embodiment 8
The embodiment of the present invention 8 provides a kind of Environment-protecting Drilling Fluids polyaminoacid class thinner, by weight, preparationRaw material includes 33 parts of L-Aspartic acid, 11 parts of lysine, 12 parts of polyphosphoric acids, 23 parts of sodium hydroxide, 18 parts of phenylalanine, water115 parts.
Second aspect of the present invention provides a kind of preparation method of Environment-protecting Drilling Fluids polyaminoacid class thinner, describedThe preparation method is as follows:
(1) L-Aspartic acid, polyphosphoric acids, 8 parts of water are sequentially added into reaction kettle, react 3.5h at 178 DEG C；
(2) into step 1, lysine is added in reaction kettle, is reacted 4h at 180 DEG C, is obtained intermediate；
(3) intermediate obtained in step 2 reaction kettle is dissolved in 107 parts of water, keeps being slowly added to benzene at 23 DEG C of temperatureAlanine is stirred to react 3h；
(4) sodium hydroxide is added to step 3 reaction kettle, adjusting pH value is 9 to get polyaminoacid class thinner.
Embodiment 9
The embodiment of the present invention 9 provides a kind of Environment-protecting Drilling Fluids polyaminoacid class thinner, by weight, preparationRaw material includes 33 parts of L-Aspartic acid, 11 parts of lysine, 12 parts of polyphosphoric acids, 23 parts of sodium hydroxide, 18 parts of tyrosine, water 115Part.
Second aspect of the present invention provides a kind of preparation method of Environment-protecting Drilling Fluids polyaminoacid class thinner, describedThe preparation method is as follows:
(1) L-Aspartic acid, polyphosphoric acids, 8 parts of water are sequentially added into reaction kettle, react 3.5h at 178 DEG C；
(2) into step 1, lysine is added in reaction kettle, is reacted 4h at 180 DEG C, is obtained intermediate；
(3) intermediate obtained in step 2 reaction kettle is dissolved in 107 parts of water, keeps being slowly added to network at 23 DEG C of temperaturePropylhomoserin is stirred to react 3h；
(4) sodium hydroxide is added to step 3 reaction kettle, adjusting pH value is 9 to get polyaminoacid class thinner.
Embodiment 10
The embodiment of the present invention 10 provides a kind of Environment-protecting Drilling Fluids polyaminoacid class thinner, by weight, systemStandby raw material includes 33 parts of L-Aspartic acid, 11 parts of lysine, 12 parts of polyphosphoric acids, 23 parts of sodium hydroxide, 16.5 parts of tryptophan, water115 parts.
Second aspect of the present invention provides a kind of preparation method of Environment-protecting Drilling Fluids polyaminoacid class thinner, describedThe preparation method is as follows:
(1) L-Aspartic acid, polyphosphoric acids, 8 parts of water are sequentially added into reaction kettle, react 3.5h at 178 DEG C；
(2) into step 1, lysine is added in reaction kettle, is reacted 4h at 180 DEG C, is obtained intermediate；
(3) intermediate obtained in step 2 reaction kettle is dissolved in 107 parts of water, keeps being slowly added to color at 23 DEG C of temperaturePropylhomoserin is stirred to react 3h；
(4) sodium hydroxide is added to step 3 reaction kettle, adjusting pH value is 9 to get polyaminoacid class thinner.
Embodiment 11
The embodiment of the present invention 11 provides a kind of Environment-protecting Drilling Fluids polyaminoacid class thinner, by weight, systemStandby raw material includes 33 parts of L-Aspartic acid, 11 parts of lysine, 12 parts of polyphosphoric acids, 23 parts of sodium hydroxide, 19 parts of tryptophan, water115 parts.
Second aspect of the present invention provides a kind of preparation method of Environment-protecting Drilling Fluids polyaminoacid class thinner, describedThe preparation method is as follows:
(1) L-Aspartic acid, polyphosphoric acids, 8 parts of water are sequentially added into reaction kettle, react 3.5h at 178 DEG C；
(2) into step 1, lysine is added in reaction kettle, is reacted 4h at 180 DEG C, is obtained intermediate；
(3) intermediate obtained in step 2 reaction kettle is dissolved in 107 parts of water, keeps being slowly added to color at 23 DEG C of temperaturePropylhomoserin is stirred to react 3h；
(4) sodium hydroxide is added to step 3 reaction kettle, adjusting pH value is 9 to get polyaminoacid class thinner.
Embodiment 12
The embodiment of the present invention 12 provides a kind of Environment-protecting Drilling Fluids polyaminoacid class thinner, by weight, systemStandby raw material includes 33 parts of L-Aspartic acid, 11 parts of lysine, 12 parts of polyphosphoric acids, 23 parts of sodium hydroxide, 12 parts of tryptophan, water115 parts.
Second aspect of the present invention provides a kind of preparation method of Environment-protecting Drilling Fluids polyaminoacid class thinner, describedThe preparation method is as follows:
(1) L-Aspartic acid, polyphosphoric acids, 8 parts of water are sequentially added into reaction kettle, react 3.5h at 178 DEG C；
(2) into step 1, lysine is added in reaction kettle, is reacted 4h at 180 DEG C, is obtained intermediate；
(3) intermediate obtained in step 2 reaction kettle is dissolved in 107 parts of water, keeps being slowly added to color at 23 DEG C of temperaturePropylhomoserin is stirred to react 3h；
(4) sodium hydroxide is added to step 3 reaction kettle, adjusting pH value is 9 to get polyaminoacid class thinner.
Embodiment 13
The embodiment of the present invention 13 provides a kind of Environment-protecting Drilling Fluids polyaminoacid class thinner, by weight, systemStandby raw material includes 33 parts of L-Aspartic acid, 11 parts of lysine, 12 parts of polyphosphoric acids, 23 parts of sodium hydroxide, 24 parts of tryptophan, water115 parts.
Second aspect of the present invention provides a kind of preparation method of Environment-protecting Drilling Fluids polyaminoacid class thinner, describedThe preparation method is as follows:
(1) L-Aspartic acid, polyphosphoric acids, 8 parts of water are sequentially added into reaction kettle, react 3.5h at 178 DEG C；
(2) into step 1, lysine is added in reaction kettle, is reacted 4h at 180 DEG C, is obtained intermediate；
(3) intermediate obtained in step 2 reaction kettle is dissolved in 107 parts of water, keeps being slowly added to color at 23 DEG C of temperaturePropylhomoserin is stirred to react 3h；
(4) sodium hydroxide is added to step 3 reaction kettle, adjusting pH value is 9 to get polyaminoacid class thinner.
Embodiment 14
The embodiment of the present invention 14 provides a kind of Environment-protecting Drilling Fluids polyaminoacid class thinner, by weight, systemStandby raw material includes 33 parts of L-Aspartic acid, 12 parts of polyphosphoric acids, 23 parts of sodium hydroxide, 18 parts of tryptophan, 115 parts of water.
Second aspect of the present invention provides a kind of preparation method of Environment-protecting Drilling Fluids polyaminoacid class thinner, describedThe preparation method is as follows:
(1) L-Aspartic acid, polyphosphoric acids, 8 parts of water are sequentially added into reaction kettle, react 3.5h at 178 DEG C；
(2) 107 parts of water will be added in step 1 reaction kettle, keeps being slowly added to tryptophan at 23 DEG C of temperature, is stirred to react3h；
(3) sodium hydroxide is added to step 2 reaction kettle, adjusting pH value is 9 to get polyaminoacid class thinner.
Embodiment 15
The embodiment of the present invention 15 provides a kind of Environment-protecting Drilling Fluids polyaminoacid class thinner, by weight, systemStandby raw material includes 50 parts of L-Aspartic acid, 11 parts of lysine, 12 parts of polyphosphoric acids, 23 parts of sodium hydroxide, 18 parts of tryptophan, water115 parts.
Second aspect of the present invention provides a kind of preparation method of Environment-protecting Drilling Fluids polyaminoacid class thinner, describedThe preparation method is as follows:
(1) L-Aspartic acid, polyphosphoric acids, 8 parts of water are sequentially added into reaction kettle, react 3.5h at 178 DEG C；
(2) into step 1, lysine is added in reaction kettle, is reacted 4h at 180 DEG C, is obtained intermediate；
(3) intermediate obtained in step 2 reaction kettle is dissolved in 107 parts of water, keeps being slowly added to color at 23 DEG C of temperaturePropylhomoserin is stirred to react 3h；
(4) sodium hydroxide is added to step 3 reaction kettle, adjusting pH value is 9 to get polyaminoacid class thinner.
Performance test:
1. the measurement of viscosity break ratio
Test method: according to the Heilungkiang Q/DLYH017-2019 Yi Rui Chemical Co., Ltd. company standard, " drilling fluid dropsStick polyaminoacid class YR-1 " relevant regulations are tested.
The preparation of 1.1 bases slurry
Distilled water 500ml, natrium carbonicum calcinatum 1.2g, sodium bentonite 30g, evaluation soil 55g, high-speed stirring are added in goblet20min is mixed, at least during the stop two times, and to scrape bentonite adhered to the wall of the container, curing in airtight condition is for 24 hours at 24 DEG C ± 3 DEG C.
1.2 viscosity break ratio
It takes a base to starch, stirs 10min with high-speed mixer, with the reading of rotary viscosity design determining 100r/min, numberOtherwise value should adjust bentonite dosage in 50 ± 5 ranges.2.5g sample is added in another base slurry again, uses high-speed stirredMachine stirs 20min, with the reading of rotary viscosity design determining 100r/min；Slurry is starched and tested to base and is respectively charged into ageing can, is put intoIn roller heating furnace, the heat rolling 16h at 120 DEG C, after taking-up is cooled to room temperature, high-speed stirred 20min uses rotary viscosity design determiningThen the reading of 100r/min calculates room temperature, high temperature viscosity break ratio by formula (1), (2).
In formula:
ρ -- indicate room temperature viscosity break ratio, %；
-- indicate the reading when 100r/min of room temperature base slurry；
-- indicate the reading when 100r/min of room temperature sample-adding slurry；
ρ ' -- indicate high temperature viscosity break ratio, %；
-- the reading when 100r/min that base is starched after expression high temperature；
-- the reading when 100r/min of slurry is loaded after expression high temperature；
The test result of embodiment 1-15 is shown in Table 1.
Table 1
Description of the invention and application be it is illustrative, it is not intended to limit the scope of the present invention to the above embodiment,Therefore, present invention is not limited by this embodiment, what any technical solution obtained using equivalence replacement was protected in the present inventionIn range.