Fiber for oil field fracturing and synthesis method thereof

Abstract

The invention relates to the technical field of oil field fracturing fiber production, and discloses an oil field fracturing fiber and a synthetic method thereof, the oil field fracturing fiber comprises 10%-20% of cellulose, 10%-20% of butyl acrylate, 7%-9% of acrylic acid, 5%-7% of allyl alcohol polyoxyethylene polyoxypropylene ether, 1%-3% of bisphenol A glycerol diacrylate, 1%-3% of 2, 2, 3-trimethyl-1, 3-pentanediol monoisobutyrate, 1%-3% of 2, 3-pentanediol The adhesive is prepared from the following components in percentage by weight: 1%-3% of 2, 2-trifluoroethyl acrylate, 2%-4% of p-styrene sulfonate, 0.7%-0.9% of benzyl methacrylate, 0.5%-0.7% of ammonium persulfate, 0.5%-0.7% of sodium persulfate, 0.3%-0.5% of sodium hydroxide solution, 0.1%-0.3% of sodium sulfite, 0.1%-0.3% of silane coupling agent, 0.1%-0.3% of polymeric dispersant, 0.1%-0.3% of polycarboxylate, 0.2%-0.4% of polyacrylamide and the balance of water. And 0.2%-0.4% of polyvinyl alcohol. According to the invention, by adopting a new preparation formula and changing a new preparation mode, the elasticity and toughness of the fiber can maintain the stability of cracks, prevent the cracks from being closed under high pressure and ensure that the oil gas output quantity is more stable; the stability and reliability of oil-gas field exploitation are improved.

Description

Technical Field

[0001] This invention relates to the field of fiber production technology for oilfield fracturing, specifically to a fiber for oilfield fracturing and its synthesis method. Background Technology

[0002] Oilfield fracturing fibers are key materials used in oil and gas extraction to improve fracturing efficiency, enhance fracture stability, and increase oil production efficiency. Fibers possess excellent elasticity and toughness, enabling the formation of more fractures during fracturing and maintaining their stability, preventing fracture closure under high pressure, thereby increasing the area for oil and gas permeation. As a component of fracturing fluid, fibers exhibit superior proppant-carrying capacity at low viscosity, more effectively delivering proppant to the fractures and improving fracturing performance. After the fracturing fluid is flowed back, the fibers remain in the formation, forming a spatial network structure with the proppant, preventing proppant backflow and playing a dual role in preventing proppant flow and increasing production. Fiber fracturing technology is mainly applied to oil and gas reservoirs with high clay content and low permeability. Depending on the different stages of fiber addition during proppant-carrying fluid injection and the radial distribution, it can be divided into various methods such as tail cone pumping technology, deep pumping technology, and full-process fiber-infused proppant-carrying fracturing technology.

[0003] Traditionally prepared fibers for oilfield fracturing, especially certain fiber polymers, may cause some damage to the reservoir during fracturing, making them relatively unstable in use. Therefore, a new preparation method is proposed to solve this technical problem. Summary of the Invention

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this invention provides a fiber for oilfield fracturing and its synthesis method, which has advantages such as good stability and solves the problem of instability caused by traditional preparation methods mentioned in the background.

[0006] (II) Technical Solution

[0007] To achieve the good stability mentioned in the background section, this invention provides the following technical solution: a fiber for oilfield fracturing and its synthesis method, comprising the following raw materials and excipients: the raw material components and their weight ratios are as follows: cellulose 10%-20%, butyl acrylate 10%-20%, acrylic acid 7%-9%, allyl alcohol polyoxyethylene polyoxypropylene ether 5%-7%, bisphenol A glycerol diacrylate 1%-3%, and 2,2,2-trifluoroethyl acrylate 1%-3%. %, styrene sulfonate 2%-4%, benzyl methacrylate 0.7%-0.9%, ammonium persulfate 0.5%-0.7%, sodium persulfate 0.5%-0.7%, sodium hydroxide solution 0.3%-0.5%, sodium sulfite 0.1%-0.3%, silane coupling agent 0.1%-0.3%, polymeric dispersant 0.1%-0.3%, polycarboxylate 0.1%-0.3%, polyacrylamide 0.2%-0.4%, polyvinyl alcohol 0.2%-0.4%;

[0008] The auxiliary materials and their weight proportions are as follows: deionized water 10%-20%, polyvalent metal ions 1.1%-1.3%, organic crosslinking agent 1.1%-1.3%, sodium chloride 0.7%-0.9%, potassium chloride 0.6%-0.8%, sodium sulfate 0.4%-0.8%, ethylenediaminetetramethylenephosphonate 0.1%-0.3%, sodium polystyrene sulfonate 0.6%-0.8%, carboxymethyl cellulose 0.3%-0.5%, hydroxyethyl cellulose 0.2%-0.4%, alum 0.1%-0.3%, aluminum acetylacetone 0.2%-0.4%, triethanolamine titanate 0.2%-0.4%, titanium lactate 0.1%-0.3%, potassium chromium sulfate 0.1%-0.3%, and potassium dichromate 0.2%-0.4%.

[0009] Preferably, the raw material components and their weight ratios are as follows: cellulose 10%, butyl acrylate 10%, acrylic acid 7%, allyl alcohol polyoxyethylene polyoxypropylene ether 5%, bisphenol A glycerol diacrylate 1%, 2,2,2-trifluoroethyl acrylate 1%, styrene p-sulfonate 2%, benzyl methacrylate 0.7%, ammonium persulfate 0.5%, sodium persulfate 0.5%, sodium hydroxide solution 0.3%, sodium sulfite 0.1%, silane coupling agent 0.1%, polymeric dispersant 0.1%, polycarboxylate 0.1%, polyacrylamide 0.2%, and polyvinyl alcohol 0.2%.

[0010] The auxiliary materials and their weight proportions are as follows: 10% deionized water, 1.1% polyvalent metal ions, 1.1% organic crosslinking agent, 0.7% sodium chloride, 0.6% potassium chloride, 0.4% sodium sulfate, 0.1% ethylenediaminetetramethylenephosphonate, 0.6% sodium polystyrene sulfonate, 0.3% carboxymethyl cellulose, 0.2% hydroxyethyl cellulose, 0.1% alum, 0.2% aluminum acetylacetone, 0.2% triethanolamine titanate, 0.1% titanium lactate, 0.1% potassium chromium sulfate, and 0.2% potassium dichromate.

[0011] Preferably, the raw material components and their weight ratios are as follows: cellulose 20%, butyl acrylate 20%, acrylic acid 9%, allyl alcohol polyoxyethylene polyoxypropylene ether 7%, bisphenol A glycerol diacrylate 3%, 2,2,2-trifluoroethyl acrylate 3%, p-sulfonate styrene 4%, benzyl methacrylate 0.9%, ammonium persulfate 0.7%, sodium persulfate 0.7%, sodium hydroxide solution 0.5%, sodium sulfite 0.3%, silane coupling agent 0.3%, polymeric dispersant 0.3%, polycarboxylate 0.3%, polyacrylamide 0.4%, and polyvinyl alcohol 0.4%.

[0012] The auxiliary materials and their weight proportions are as follows: 20% deionized water, 1.3% polyvalent metal ions, 1.3% organic crosslinking agent, 0.9% sodium chloride, 0.8% potassium chloride, 0.8% sodium sulfate, 0.3% ethylenediaminetetramethylenephosphonate, 0.8% sodium polystyrene sulfonate, 0.5% carboxymethyl cellulose, 0.4% hydroxyethyl cellulose, 0.3% alum, 0.4% aluminum acetylacetone, 0.4% triethanolamine titanate, 0.3% titanium lactate, 0.3% potassium chromium sulfate, and 0.4% potassium dichromate.

[0013] Preferably, the raw material components and their weight ratios are as follows: cellulose 15%, butyl acrylate 15%, acrylic acid 8%, allyl alcohol polyoxyethylene polyoxypropylene ether 6%, bisphenol A glycerol diacrylate 6%, 2,2,2-trifluoroethyl acrylate 2%, p-sulfonate styrene 3%, benzyl methacrylate 0.8%, ammonium persulfate 0.6%, sodium persulfate 0.6%, sodium hydroxide solution 0.4%, sodium sulfite 0.2%, silane coupling agent 0.2%, polymeric dispersant 0.2%, polycarboxylate 0.2%, polyacrylamide 0.3%, and polyvinyl alcohol 0.3%.

[0014] The auxiliary materials and their weight proportions are as follows: 15% deionized water, 1.2% polyvalent metal ions, 1.2% organic crosslinking agent, 0.8% sodium chloride, 0.7% potassium chloride, 0.6% sodium sulfate, 0.2% ethylenediaminetetramethylenephosphonate, 0.7% sodium polystyrene sulfonate, 0.4% carboxymethyl cellulose, 0.3% hydroxyethyl cellulose, 0.2% alum, 0.3% aluminum acetylacetone, 0.3% triethanolamine titanate, 0.2% titanium lactate, 0.2% potassium chromium sulfate, and 0.3% potassium dichromate.

[0015] Preferably, a fiber for oilfield fracturing and its synthesis method are characterized by comprising the following steps:

[0016] Step 1: Using sampling equipment, measure the raw materials for preparation (cellulose 10%-20%, butyl acrylate 10%-20%, acrylic acid 7%-9%, allyl alcohol polyoxyethylene polyoxypropylene ether 5%-7%, bisphenol A glycerol diacrylate 1%-3%, 2,2,2-trifluoroethyl acrylate 1%-3%, p-sulfonate styrene 2%-4%, benzyl methacrylate 0.7%-0.9%, ammonium persulfate 0.5%-0.7%, sodium persulfate 0.5%-0.7%, sodium hydroxide solution 0.3%-0.5%, sodium sulfite 0.1%-0.3%, silane coupling agent 0.1%-0.3%, polymeric dispersant 0.1%-0.3%, polycarboxylate 0.1%-0.3%, polyacrylamide 0.2%-0.4%, polyvinyl alcohol 0.2%-0.4%).

[0017] Step 2: Using sampling equipment, measure the following excipients for preparation: (10%-20% deionized water, 1.1%-1.3% polyvalent metal ions, 1.1%-1.3% organic crosslinking agent, 0.7%-0.9% sodium chloride, 0.6%-0.8% potassium chloride, 0.4%-0.8% sodium sulfate, 0.1%-0.3% ethylenediaminetetramethylenephosphonate, 0.6%-0.8% sodium polystyrene sulfonate, 0.3%-0.5% carboxymethyl cellulose, 0.2%-0.4% hydroxyethyl cellulose, 0.1%-0.3% alum, 0.2%-0.4% aluminum acetylacetone, 0.2%-0.4% triethanolamine titanate, 0.1%-0.3% titanium lactate, 0.1%-0.3% potassium chromium sulfate, and 0.2%-0.4% potassium dichromate).

[0018] Step 3: Add the weighed raw materials to the reactor in sequence, and mix them thoroughly by high-speed stirring to form a uniform emulsion;

[0019] Step 4: Adjust the pH of the emulsion using sodium hydroxide solution to a suitable pH value, and set the reaction temperature and stirring speed according to the specific synthesis process;

[0020] Step 5: Slowly add the reaction excipients into the reactor through a high-level tank. When the reaction reaches a certain extent, stop adding the initiator and reducing agent, and continue stirring.

[0021] Step 6: Perform necessary post-treatment on the obtained viscous polymer, and then perform jetting, winding, drawing, and shearing operations on the post-treated polymer to prepare fibers with a certain length and diameter.

[0022] Step 7: Conduct quality inspection on the prepared oilfield fracturing fibers and package the qualified products.

[0023] Compared with the prior art, the present invention provides a fiber for oilfield fracturing and a method for synthesizing the same, which has the following beneficial effects:

[0024] 1. This invention, by adopting a new preparation formula and changing a new preparation method, enables the elasticity and toughness of the fiber to maintain the stability of the crack, prevent the crack from closing under high pressure, and ensure a more stable oil and gas output. When used, the addition of the fiber can reduce fluctuations in the collection process and improve the stability and reliability of oil and gas field exploitation.

[0025] 2. In this invention, the fiber, as a component of the fracturing fluid, has excellent proppant-carrying performance at low viscosity, which can more effectively deliver the proppant to the fracture and improve the fracturing effect. The fiber interacts with the microparticles, which can prevent the microparticles from settling, reduce the settling rate of the proppant, and ensure the effective distribution of the proppant in the fracture.

[0026] 3. In this invention, fiber can be used as a substitute for fracturing agent, reducing the amount of fracturing agent used and thus reducing mining costs. Fiber is a natural material that will not cause pollution to the environment and meets modern environmental protection requirements. Some biodegradable fibers can also degrade naturally after the fracturing operation is completed, reducing the long-term impact on the environment. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the process of the present invention. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] Example 1

[0030] Step 1: Using sampling equipment, measure the raw materials for preparation (cellulose 10%, butyl acrylate 10%, acrylic acid 7%, allyl alcohol polyoxyethylene polyoxypropylene ether 5%, bisphenol A glycerol diacrylate 1%, 2,2,2-trifluoroethyl acrylate 1%, p-sulfonate styrene 2%, benzyl methacrylate 0.7%, ammonium persulfate 0.5%, sodium persulfate 0.5%, sodium hydroxide solution 0.3%, sodium sulfite 0.1%, silane coupling agent 0.1%, polymeric dispersant 0.1%, polycarboxylate 0.1%, polyacrylamide 0.2%, polyvinyl alcohol 0.2%).

[0031] Step 2: Using sampling equipment, measure the following excipients for preparation: (10% deionized water, 1.1% polyvalent metal ions, 1.1% organic crosslinking agent, 0.7% sodium chloride, 0.6% potassium chloride, 0.4% sodium sulfate, 0.1% ethylenediaminetetramethylenephosphonate, 0.6% sodium polystyrene sulfonate, 0.3% carboxymethyl cellulose, 0.2% hydroxyethyl cellulose, 0.1% alum, 0.2% aluminum acetylacetone, 0.2% triethanolamine titanate, 0.1% titanium lactate, 0.1% potassium chromium sulfate, and 0.2% potassium dichromate).

[0032] Step 3: Add the weighed raw materials to the reactor in sequence, and mix them thoroughly by high-speed stirring to form a uniform emulsion;

[0033] Step 4: Adjust the pH of the emulsion using sodium hydroxide solution to a suitable pH value, and set the reaction temperature and stirring speed according to the specific synthesis process;

[0034] Step 5: Slowly add the reaction excipients into the reactor through a high-level tank. When the reaction reaches a certain extent, stop adding the initiator and reducing agent, and continue stirring.

[0035] Step 6: Perform necessary post-treatment on the obtained viscous polymer, and then perform jetting, winding, drawing, and shearing operations on the post-treated polymer to prepare fibers with a certain length and diameter.

[0036] Step 7: Conduct quality inspection on the prepared oilfield fracturing fibers and package the qualified products.

[0037] Example 2

[0038] Step 1: Using sampling equipment, measure the raw materials for preparation (cellulose 20%, butyl acrylate 20%, acrylic acid 9%, allyl alcohol polyoxyethylene polyoxypropylene ether 7%, bisphenol A glycerol diacrylate 3%, 2,2,2-trifluoroethyl acrylate 3%, p-sulfonate styrene 4%, benzyl methacrylate 0.9%, ammonium persulfate 0.7%, sodium persulfate 0.7%, sodium hydroxide solution 0.5%, sodium sulfite 0.3%, silane coupling agent 0.3%, polymeric dispersant 0.3%, polycarboxylate 0.3%, polyacrylamide 0.4%, polyvinyl alcohol 0.4%).

[0039] Step 2: Using sampling equipment, measure the following excipients for preparation: (20% deionized water, 1.3% polyvalent metal ions, 1.3% organic crosslinking agent, 0.9% sodium chloride, 0.8% potassium chloride, 0.8% sodium sulfate, 0.3% ethylenediaminetetramethylenephosphonate, 0.8% sodium polystyrene sulfonate, 0.5% carboxymethyl cellulose, 0.4% hydroxyethyl cellulose, 0.3% alum, 0.4% aluminum acetylacetone, 0.4% triethanolamine titanate, 0.3% titanium lactate, 0.3% potassium chromium sulfate, and 0.4% potassium dichromate).

[0040] Step 3: Add the weighed raw materials to the reactor in sequence, and mix them thoroughly by high-speed stirring to form a uniform emulsion;

[0041] Step 4: Adjust the pH of the emulsion using sodium hydroxide solution to a suitable pH value, and set the reaction temperature and stirring speed according to the specific synthesis process;

[0042] Step 5: Slowly add the reaction excipients into the reactor through a high-level tank. When the reaction reaches a certain extent, stop adding the initiator and reducing agent, and continue stirring.

[0043] Step 6: Perform necessary post-treatment on the obtained viscous polymer, and then perform jetting, winding, drawing, and shearing operations on the post-treated polymer to prepare fibers with a certain length and diameter.

[0044] Step 7: Conduct quality inspection on the prepared oilfield fracturing fibers and package the qualified products.

[0045] Example 3

[0046] Step 1: Using sampling equipment, measure the raw materials for preparation (cellulose 15%, butyl acrylate 15%, acrylic acid 8%, allyl alcohol polyoxyethylene polyoxypropylene ether 6%, bisphenol A glycerol diacrylate 6%, 2,2,2-trifluoroethyl acrylate 2%, p-sulfonate styrene 3%, benzyl methacrylate 0.8%, ammonium persulfate 0.6%, sodium persulfate 0.6%, sodium hydroxide solution 0.4%, sodium sulfite 0.2%, silane coupling agent 0.2%, polymeric dispersant 0.2%, polycarboxylate 0.2%, polyacrylamide 0.3%, polyvinyl alcohol 0.3%).

[0047] Step 2: Using sampling equipment, measure the following excipients: (15% deionized water, 1.2% polyvalent metal ions, 1.2% organic crosslinking agent, 0.8% sodium chloride, 0.7% potassium chloride, 0.6% sodium sulfate, 0.2% ethylenediaminetetramethylenephosphonate, 0.7% sodium polystyrene sulfonate, 0.4% carboxymethyl cellulose, 0.3% hydroxyethyl cellulose, 0.2% alum, 0.3% aluminum acetylacetone, 0.3% triethanolamine titanate, 0.2% titanium lactate, 0.2% potassium chromium sulfate, and 0.3% potassium dichromate).

[0048] Step 3: Add the weighed raw materials to the reactor in sequence, and mix them thoroughly by high-speed stirring to form a uniform emulsion;

[0049] Step 4: Adjust the pH of the emulsion using sodium hydroxide solution to a suitable pH value, and set the reaction temperature and stirring speed according to the specific synthesis process;

[0050] Step 5: Slowly add the reaction excipients into the reactor through a high-level tank. When the reaction reaches a certain extent, stop adding the initiator and reducing agent, and continue stirring.

[0051] Step 6: Perform necessary post-treatment on the obtained viscous polymer, and then perform jetting, winding, drawing, and shearing operations on the post-treated polymer to prepare fibers with a certain length and diameter.

[0052] Step 7: Conduct quality inspection on the prepared oilfield fracturing fibers and package the qualified products.

[0053] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A fiber for oilfield fracturing and its synthesis method, characterized in that, The product includes the following raw materials and excipients: the raw material components and their weight ratios are as follows: cellulose 10%-20%, butyl acrylate 10%-20%, acrylic acid 7%-9%, allyl alcohol polyoxyethylene polyoxypropylene ether 5%-7%, bisphenol A glycerol diacrylate 1%-3%, 2,2,2-trifluoroethyl acrylate 1%-3%, styrene p-sulfonate 2%-4%, benzyl methacrylate 0.7%-0.9%, ammonium persulfate 0.5%-0.7%, sodium persulfate 0.5%-0.7%, sodium hydroxide solution 0.3%-0.5%, sodium sulfite 0.1%-0.3%, silane coupling agent 0.1%-0.3%, polymeric dispersant 0.1%-0.3%, polycarboxylate 0.1%-0.3%, polyacrylamide 0.2%-0.4%, and polyvinyl alcohol 0.2%-0.4%. The auxiliary materials and their weight proportions are as follows: deionized water 10%-20%, polyvalent metal ions 1.1%-1.3%, organic crosslinking agent 1.1%-1.3%, sodium chloride 0.7%-0.9%, potassium chloride 0.6%-0.8%, sodium sulfate 0.4%-0.8%, ethylenediaminetetramethylenephosphonate 0.1%-0.3%, sodium polystyrene sulfonate 0.6%-0.8%, carboxymethyl cellulose 0.3%-0.5%, hydroxyethyl cellulose 0.2%-0.4%, alum 0.1%-0.3%, aluminum acetylacetone 0.2%-0.4%, triethanolamine titanate 0.2%-0.4%, titanium lactate 0.1%-0.3%, potassium chromium sulfate 0.1%-0.3%, and potassium dichromate 0.2%-0.4%.

2. The fiber for oilfield fracturing and its synthesis method according to claim 1, characterized in that: The raw material components and their weight ratios are as follows: cellulose 10%, butyl acrylate 10%, acrylic acid 7%, allyl alcohol polyoxyethylene polyoxypropylene ether 5%, bisphenol A glycerol diacrylate 1%, 2,2,2-trifluoroethyl acrylate 1%, p-sulfonate styrene 2%, benzyl methacrylate 0.7%, ammonium persulfate 0.5%, sodium persulfate 0.5%, sodium hydroxide solution 0.3%, sodium sulfite 0.1%, silane coupling agent 0.1%, polymeric dispersant 0.1%, polycarboxylate 0.1%, polyacrylamide 0.2%, and polyvinyl alcohol 0.2%. The auxiliary materials and their weight proportions are as follows: 10% deionized water, 1.1% polyvalent metal ions, 1.1% organic crosslinking agent, 0.7% sodium chloride, 0.6% potassium chloride, 0.4% sodium sulfate, 0.1% ethylenediaminetetramethylenephosphonate, 0.6% sodium polystyrene sulfonate, 0.3% carboxymethyl cellulose, 0.2% hydroxyethyl cellulose, 0.1% alum, 0.2% aluminum acetylacetone, 0.2% triethanolamine titanate, 0.1% titanium lactate, 0.1% potassium chromium sulfate, and 0.2% potassium dichromate.

3. The fiber for oilfield fracturing and its synthesis method according to claim 1, characterized in that: The raw material components and their weight ratios are as follows: cellulose 20%, butyl acrylate 20%, acrylic acid 9%, allyl alcohol polyoxyethylene polyoxypropylene ether 7%, bisphenol A glycerol diacrylate 3%, 2,2,2-trifluoroethyl acrylate 3%, p-sulfonate styrene 4%, benzyl methacrylate 0.9%, ammonium persulfate 0.7%, sodium persulfate 0.7%, sodium hydroxide solution 0.5%, sodium sulfite 0.3%, silane coupling agent 0.3%, polymeric dispersant 0.3%, polycarboxylate 0.3%, polyacrylamide 0.4%, and polyvinyl alcohol 0.4%. The auxiliary materials and their weight proportions are as follows: 20% deionized water, 1.3% polyvalent metal ions, 1.3% organic crosslinking agent, 0.9% sodium chloride, 0.8% potassium chloride, 0.8% sodium sulfate, 0.3% ethylenediaminetetramethylenephosphonate, 0.8% sodium polystyrene sulfonate, 0.5% carboxymethyl cellulose, 0.4% hydroxyethyl cellulose, 0.3% alum, 0.4% aluminum acetylacetone, 0.4% triethanolamine titanate, 0.3% titanium lactate, 0.3% potassium chromium sulfate, and 0.4% potassium dichromate.

4. The fiber for oilfield fracturing and its synthesis method according to claim 1, characterized in that: The raw material components and their weight ratios are as follows: cellulose 15%, butyl acrylate 15%, acrylic acid 8%, allyl alcohol polyoxyethylene polyoxypropylene ether 6%, bisphenol A glycerol diacrylate 6%, 2,2,2-trifluoroethyl acrylate 2%, p-sulfonate styrene 3%, benzyl methacrylate 0.8%, ammonium persulfate 0.6%, sodium persulfate 0.6%, sodium hydroxide solution 0.4%, sodium sulfite 0.2%, silane coupling agent 0.2%, polymeric dispersant 0.2%, polycarboxylate 0.2%, polyacrylamide 0.3%, and polyvinyl alcohol 0.3%. The auxiliary materials and their weight proportions are as follows: 15% deionized water, 1.2% polyvalent metal ions, 1.2% organic crosslinking agent, 0.8% sodium chloride, 0.7% potassium chloride, 0.6% sodium sulfate, 0.2% ethylenediaminetetramethylenephosphonate, 0.7% sodium polystyrene sulfonate, 0.4% carboxymethyl cellulose, 0.3% hydroxyethyl cellulose, 0.2% alum, 0.3% aluminum acetylacetone, 0.3% triethanolamine titanate, 0.2% titanium lactate, 0.2% potassium chromium sulfate, and 0.3% potassium dichromate.

5. The fiber for oilfield fracturing and its synthesis method according to claim 1, characterized in that, Includes the following steps: Step 1: Using sampling equipment, measure the raw materials for preparation (cellulose 10%-20%, butyl acrylate 10%-20%, acrylic acid 7%-9%, allyl alcohol polyoxyethylene polyoxypropylene ether 5%-7%, bisphenol A glycerol diacrylate 1%-3%, 2,2,2-trifluoroethyl acrylate 1%-3%, p-sulfonate styrene 2%-4%, benzyl methacrylate 0.7%-0.9%, ammonium persulfate 0.5%-0.7%, sodium persulfate 0.5%-0.7%, sodium hydroxide solution 0.3%-0.5%, sodium sulfite 0.1%-0.3%, silane coupling agent 0.1%-0.3%, polymeric dispersant 0.1%-0.3%, polycarboxylate 0.1%-0.3%, polyacrylamide 0.2%-0.4%, polyvinyl alcohol 0.2%-0.4%). Step 2: Using sampling equipment, measure the following excipients for preparation: (10%-20% deionized water, 1.1%-1.3% polyvalent metal ions, 1.1%-1.3% organic crosslinking agent, 0.7%-0.9% sodium chloride, 0.6%-0.8% potassium chloride, 0.4%-0.8% sodium sulfate, 0.1%-0.3% ethylenediaminetetramethylenephosphonate, 0.6%-0.8% sodium polystyrene sulfonate, 0.3%-0.5% carboxymethyl cellulose, 0.2%-0.4% hydroxyethyl cellulose, 0.1%-0.3% alum, 0.2%-0.4% aluminum acetylacetone, 0.2%-0.4% triethanolamine titanate, 0.1%-0.3% titanium lactate, 0.1%-0.3% potassium chromium sulfate, and 0.2%-0.4% potassium dichromate). Step 3: Add the weighed raw materials to the reactor in sequence, and mix them thoroughly by high-speed stirring to form a uniform emulsion; Step 4: Adjust the pH of the emulsion using sodium hydroxide solution to a suitable pH value, and set the reaction temperature and stirring speed according to the specific synthesis process; Step 5: Slowly add the reaction excipients into the reactor through a high-level tank. When the reaction reaches a certain extent, stop adding the initiator and reducing agent, and continue stirring. Step 6: Perform necessary post-treatment on the obtained viscous polymer, and then perform jetting, winding, drawing, and shearing operations on the post-treated polymer to prepare fibers with a certain length and diameter. Step 7: Conduct quality inspection on the prepared oilfield fracturing fibers and package the qualified products.

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