阅读说明：本技术 一种基于超分子材料的超低密度支撑剂的生产方法 (A kind of production method of the super-low-density proppant based on supramolecular materials ) 是由 罗志锋 吴林 赵立强 张楠林 周长林 刘洪涛 刘平礼 李年银 李楠 刘举 耿宇迪 于 2019-09-04 设计创作，主要内容包括：本发明公开了一种基于超分子材料的超低密度支撑剂的生产方法,包括步骤：将反应液体A和非反应液体B按照0-0.75：0.25-1的质量比先后注入反应釜；反应釜将反应液体A和非反应液体B搅拌均匀后,加热并保温,直到反应液体A各组分之间的反应完成,然后进行自然冷却；将反应釜中反应液体A生成的珠状颗粒与非反应液体B进行分离；将珠状颗粒加入球磨机进一步磨成球；进入振筛机分筛,即得超低密度支撑剂。通过本发明方法生产的超低密度支撑剂,具有一定的抗压强度,用于解决现有支撑剂因为密度大而导致的在裂缝中输送距离短、支撑剂沉降的问题。(The invention discloses a kind of production methods of super-low-density proppant based on supramolecular materials, comprising steps of reaction liquid A and non-reaction liquid B are successively injected reaction kettle according to the mass ratio of 0-0.75:0.25-1；Reaction liquid A and non-reaction liquid B after mixing evenly, is heated and is kept the temperature by reaction kettle, until the reaction completion between reaction liquid A each component, then carries out natural cooling；The Beads generated of reaction liquid A in reaction kettle are separated with non-reaction liquid B；Beads addition ball mill is further worn into ball；Into vibrating sieving machine sub-sieve to get super-low-density proppant.The super-low-density proppant produced by the method for the invention has certain compression strength, for solving the problems, such as existing proppant because conveying distance is short in crack caused by density is big, proppant sedimentation.)

1. a kind of production method of the super-low-density proppant based on supramolecular materials, it is characterised in that the following steps are included:

(1) reaction liquid A and non-reaction liquid B are successively injected into reaction kettle according to the mass ratio of 0-0.75:0.25-1；It is described anti- Liquid A is answered to be made of by mass percentage following each component: supermolecule construction unit 15-40%, Supramolecular Functions unit 10- 40%, surfactant 1-2.5%, activator 1-2.5%, promoter 1-5%, remaining is organic solvent；Non- reaction liquid B is Clear water；

(2) reaction kettle by reaction liquid A and non-reaction liquid B after mixing evenly, heat and keep the temperature, until reaction liquid A each group / reaction complete, then carry out natural cooling；

(3) Beads generated of reaction liquid A in reaction kettle are separated with non-reaction liquid B；

(4) Beads addition ball mill is further worn into ball；

(5) enter vibrating sieving machine sub-sieve to get super-low-density proppant.

2. a kind of production method of super-low-density proppant based on supramolecular materials according to claim 1, feature Be: in step (1), the supermolecule construction unit is the mixture of ammeline, cyanuramide or both.

3. a kind of production method of super-low-density proppant based on supramolecular materials according to claim 1, feature Be: in step (1), the Supramolecular Functions unit is the mixture of acrylic acid, butenoic acid or both.

4. a kind of production method of super-low-density proppant based on supramolecular materials according to claim 1, feature Be: in step (1), the surfactant is polyoxyethylene carboxylate, fatty acid methyl ester ethoxylate or both Mixture.

5. a kind of production method of super-low-density proppant based on supramolecular materials according to claim 1, feature Be: in step (1), the activator is the mixture of azodiisobutyronitrile, azobisisoheptonitrile or both.

6. a kind of production method of super-low-density proppant based on supramolecular materials according to claim 1, feature Be: in step (1), the promoter is or mixtures thereof sodium chloride, potassium chloride.

7. a kind of production method of super-low-density proppant based on supramolecular materials according to claim 1, feature It is: in step (2), after reaction kettle is with the speed uniform stirring 1min of 60r/min-80r/min, is warming up to 60 DEG C -120 DEG C, Keep the temperature 30min-60min.

8. a kind of production method of super-low-density proppant based on supramolecular materials according to claim 1, feature Be: in step (5), the specification into super-low-density proppant obtained by vibrating sieving machine sub-sieve is 20/40 mesh.

Technical field

The present invention relates to a kind of production methods of super-low-density proppant based on supramolecular materials, belong to oil-gas field development Technical field.

Background technique

Hydraulic fracturing technology has obtained extensively in China at present as one of well production increment, intensified injection of wells measure Application.Hydraulic fracturing is by infusing highly viscous prepad fluid to purpose reservoir pump, and high pressure forms crack and extends, is subsequently injected into Mulling liquid with proppant, makes proppant pack in hydraulic fracture, to form long enough, sufficiently wide height in the earth formation Water conservancy diversion sand packed fracture, thus the performance of proppant largely affects the effect of hydraulic fracturing.

Density and compression strength are to evaluate two important indicators of proppant performance.If proppant density is too high, it is unfavorable for Fracturing fluid carries, and proppant is easily settled, and distal end crack, branch's seam and vertical fracture top half cannot be filled effectively, In The filling effect of proppant is improved frequently with the mode for improving operational discharge capacity or fracturing fluid viscosity in scene, but is easy to produce safety wind Danger simultaneously damages reservoir.If compression strength is too low, proppant is easily broken, and it is not high to also result in fracture condudtiviy, water Power fracturing effect is bad.Therefore proppant, while meeting low-density, compression strength can not be too poor.

Now widely used proppant mainly has quartz sand, haydite, overlay film proppant etc..The density of quartz sand, haydite It is larger, it there is the situation that proppant lays effect difference in the hydraulic fracturing process of conventional reservoir, overlay film proppant is in routine Reservoir has well adapting to property, but in the unconventional reservoirs fracturing process such as shale gas, coal bed gas, is not also able to satisfy narrow branch Stitch the demand to low-density.

Therefore a kind of exploitation of the proppant of extremely-low density for China's conventional gas and oil resource, unconventional petroleum resources is researched and developed It is of great significance.

Summary of the invention

Goal of the invention of the invention is: in view of the above problems, providing a kind of based on the ultralow of supramolecular materials The production method of density proppant, the super-low-density proppant produced by the method have certain compression strength, for solving Certainly existing proppant is because of the problem of conveying distance is short in crack caused by density is big, proppant settles.

The technical solution adopted by the present invention is that such:

A kind of production method of the super-low-density proppant based on supramolecular materials, comprising the following steps:

(1) reaction liquid A and non-reaction liquid B are successively injected into reaction kettle according to the mass ratio of 0-0.75:0.25-1；Institute It states reaction liquid A to be made of by mass percentage following each component: supermolecule construction unit 15-40%, Supramolecular Functions unit 10-40%, surfactant 1-2.5%, activator 1-2.5%, promoter 1-5%, remaining is organic solvent；Non- reaction liquid B is clear water；

(2) reaction kettle by reaction liquid A and non-reaction liquid B after mixing evenly, heat and keep the temperature, until reaction liquid A Reaction between each component is completed, and natural cooling is then carried out；

(3) Beads generated of reaction liquid A in reaction kettle are separated with non-reaction liquid B；

(4) Beads addition ball mill is further worn into ball；

(5) enter vibrating sieving machine sub-sieve to get super-low-density proppant.

Reaction liquid A provided by the invention, during heating and thermal insulation, each component is according to the entropys of supramolecular materials in system Driving has order theory, realizes self assembly, to form pearl Selid propping agent particle in non-reaction liquid B, dispersion is wherein.This The super-low-density proppant based on supramolecular materials that invention provides introduces polyphosphazene polymer while Supramolecular self assembly Reaction is closed, makes physics, chemical crosslinking synergistic effect, to improve the toughness of product, shortens generated time.

In above-mentioned technical proposal, the serial Supramolecular self assembly auxiliary agent added in reaction liquid A, function is respectively as follows: table Face activating agent can effectively improve the ability of organic solvent dissolution supermolecule construction unit and Supramolecular Functions unit, and assist whole The stabilization of inorganic matter and organic matter in a system；Activator can activate polymerization reaction, reduce energy consumption, improve reaction rate； Promoter can be used to form inorganic gel, and intermediate effect is played in supermolecule is constructed.

Preferably, the supermolecule construction unit is ammeline, cyanogen urine in the step of above-mentioned technical proposal (1) The mixture of amide or both.

Preferably, in the step of above-mentioned technical proposal (1), the Supramolecular Functions unit be acrylic acid, butenoic acid or The mixture of the two.

Preferably, the surfactant is polyoxyethylene carboxylate, rouge in the step of above-mentioned technical proposal (1) The mixture of fatty acid methyl esters ethoxylate or both.

Preferably, in the step of above-mentioned technical proposal (1), the activator is azodiisobutyronitrile, azo two different heptan The mixture of nitrile or both.

Preferably, the promoter is or mixtures thereof sodium chloride, potassium chloride in the step of above-mentioned technical proposal (1).

Preferably, reaction kettle is uniformly stirred in the step of above-mentioned technical proposal (2) with the speed of 60r/min-80r/min After mixing 1min, 60 DEG C -120 DEG C are warming up to, keeps the temperature 30min-60min.

Preferably, in the step of above-mentioned technical proposal (5), into the rule of super-low-density proppant obtained by vibrating sieving machine sub-sieve Lattice are 20/40 mesh.

In conclusion by adopting the above-described technical solution, the beneficial effects of the present invention are:

1, compared with proppant in the prior art, the super-low-density proppant produced by the method for the invention greatly drops The low requirement of proppant density and fracturing fluid viscosity to solid-carrying performance, and further reduced pit shaft frictional resistance, well head pressure and Construction risk；

2, compared with proppant in the prior art, the super-low-density proppant produced by the method for the invention can be solved effectively Proppant caused by certainly existing proppant conveying distance in crack is short, proppant settles lays unreasonable problem；

3, compared with proppant in the prior art, the super-low-density proppant produced by the method for the invention can be mentioned effectively The sphericity of high proppant, it is ensured that proppant is more uniformly stressed in high closure stress lower surface, is born higher load, is mentioned The flow conductivity of high supporting crack.

Specific embodiment

The present invention is described in detail below.

A kind of production method of super-low-density proppant based on supramolecular materials of the invention, comprising the following steps:

(1) reaction liquid A and non-reaction liquid B are successively injected into reaction kettle according to the mass ratio of 0-0.75:0.25-1；Institute It states reaction liquid A to be made of by mass percentage following each component: supermolecule construction unit 15-40%, Supramolecular Functions unit 10-40%, surfactant 1-2.5%, activator 1-2.5%, promoter 1-5%, remaining is organic solvent；Non- reaction liquid B is clear water.In step (1), the supermolecule construction unit is the mixture of ammeline, cyanuramide or both, described Supramolecular Functions unit be acrylic acid, butenoic acid or both mixture, the surfactant be polyoxyethylene carboxylate, The mixture of fatty acid methyl ester ethoxylate or both, the activator are azodiisobutyronitrile, azobisisoheptonitrile or two The mixture of person, the promoter are or mixtures thereof sodium chloride, potassium chloride.

(2) reaction kettle is by reaction liquid A and non-reaction liquid B with the speed uniform stirring 1min of 60r/min-80r/min Afterwards, be warming up to 60 DEG C -120 DEG C, keep the temperature 30min-60min, until the reaction between reaction liquid A each component is completed, then into Row natural cooling.

(3) Beads generated of reaction liquid A in reaction kettle are separated with non-reaction liquid B.

(4) Beads addition ball mill is further worn into ball.

(5) enter super-low-density proppant of the vibrating sieving machine sub-sieve to get specification for 20/40 mesh.