CN109458157B - Novel petroleum wax is clear away device - Google Patents

Novel petroleum wax is clear away device Download PDF

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CN109458157B
CN109458157B CN201811343023.7A CN201811343023A CN109458157B CN 109458157 B CN109458157 B CN 109458157B CN 201811343023 A CN201811343023 A CN 201811343023A CN 109458157 B CN109458157 B CN 109458157B
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wax
paraffin
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CN109458157A (en
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钱正楠
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Aochen Technology Co.,Ltd.
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Yancheng Fudequan Technology Co ltd
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    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21BEARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B37/00Methods or apparatus for cleaning boreholes or wells
    • E21B37/06Methods or apparatus for cleaning boreholes or wells using chemical means for preventing or limiting, e.g. eliminating, the deposition of paraffins or like substances
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09KMATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K8/00Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
    • C09K8/52Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning
    • C09K8/524Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning organic depositions, e.g. paraffins or asphaltenes
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09KMATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K8/00Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
    • C09K8/52Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning
    • C09K8/528Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning inorganic depositions, e.g. sulfates or carbonates
    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21BEARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B37/00Methods or apparatus for cleaning boreholes or wells
    • E21B37/02Scrapers specially adapted therefor

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Abstract

The invention provides a novel petroleum wax removing device which can realize wax removing processes such as wax breaking, wax removing, wax prevention and the like at one time, and the wax removing processes are matched and supplemented with each other in a plurality of wax removing modes, so that the efficient, quick, convenient, self-adaptive and environment-friendly wax removing process is realized. In the paraffin removal process, the chemical paraffin removal and softening layer is used for realizing high efficiency of mechanical paraffin removal, the paraffin removal tool bit can be protected by the chemical paraffin removal and softening layer, and after the mechanical paraffin removal is finished, the biological paraffin removal is used for performing paraffin prevention and paraffin removal treatment on the inner part of the pipeline, so that dead corners and residual paraffin which cannot be touched by the tool bit can be removed.

Description

Novel petroleum wax is clear away device
Technical Field
The invention relates to the field of petroleum machinery, in particular to a novel petroleum wax removing device.
Background
During the production of crude oil fields, oil well waxing is a significant cause of oil well production. The method for implementing wax removal and prevention measures on the wax precipitation well is one of the main means for ensuring the normal production of the high wax content well. The wax removal and prevention of oil wells are various in types, and the types of oil wells are classified into electric heating wax removal, organic solvent wax removal, chemical agent wax removal and prevention and hot oil wax removal vehicle wax removal.
Among the four major wax removal methods, electrical heating wax removal is the most effective wax removal and prevention measure, but has the defects of high cost, unsafety and the like. The paraffin removal by organic solvent mostly adopts mixed benzene and light hydrocarbons, and has good paraffin removal effect, and the defects of flammability, explosiveness and high price. The chemical agent has good effect, low cost, safety and reliability, proper drug selection and good effect, but the process and the management are complex.
The paraffin removal of a hot oil paraffin removal vehicle widely applied to an oil field is high in cost, on one hand, a large amount of diesel oil needs to be combusted, on the other hand, a large amount of equipment including two tank trucks and one paraffin removal vehicle needs to be operated by a batch of people, on the other hand, water is used as a carrier during hot washing of the oil field, not only is the pollution to the stratum serious, but also the normal production can be basically recovered after water pumping time of 2-3 days after each time of washing, the cost of 4000 plus 5000 yuan is needed for one-well hot washing through rough calculation, the paraffin precipitation of some wells is fast, the hot washing is needed for 7-15 days, the ordinary wells are washed once a month, and the increase of the hot washing cost brings great loss to the economic benefit of the oil field.
The novel petroleum wax removing device provided by the invention has the advantages of high working efficiency, simplicity and convenience in operation, thorough wax removal and environmental friendliness, is suitable for various wax removal scenes, and does not generate secondary pollution.
Disclosure of Invention
In order to solve the technical problem, the invention provides a novel petroleum wax removing device.
The invention is realized by the following technical scheme:
the invention provides a novel petroleum wax removing device which comprises a rope cap, a control room, a main control board, a power supply module, a first motor, a coupler, a rotating head, a second motor, a linear guide rail, a sliding table, a cutter assembly, a liquid supply system, an end cover and a sealing centralizing ring, wherein the liquid supply system is arranged inside the rotating head and comprises a grading liquid storage chamber, the grading liquid storage chamber comprises a novel paraffin removing liquid storage chamber, and novel paraffin removing liquid is arranged in the novel paraffin removing liquid storage chamber.
Further, the novel dewaxing liquid comprises a nonionic surfactant, an auxiliary agent, a catalyst, a cocatalyst and a solvent.
Further, the novel dewaxing liquid comprises the following specific components: 4.5 to 7.5 percent of nonionic surfactant which is a mixture of novel nonionic surfactant, fatty alcohol-polyoxyethylene ether, poly (octadecyl methacrylate) and polydimethylsiloxane 5:2:3: 1; 2.75 to 3.4 percent of auxiliary agent which is a mixture of n-octanol and isoamylol in equal proportion; 0.05-0.11% of catalyst titanium tetrachloride; 0.21 to 0.25 percent of cocatalyst, triethyl aluminum, 0.5 percent of defoamer, 0.25 percent of antistatic agent and the balance of solvent, wherein the solvent is one or more selected from ethylene glycol monobutyl ether, propylene glycol ether, cyclohexane, normal hexane, ethyl acetate, butyl ester or trichloroethylene, and the preferred mixture is the mixture of ethylene glycol monobutyl ether and cyclohexane in equal proportion.
Preferably, the novel dewaxing liquid comprises the following specific components: 5.25 percent of nonionic surfactant which is a mixture of novel nonionic surfactant, fatty alcohol-polyoxyethylene ether, poly (octadecyl methacrylate) and polydimethylsiloxane 5:2:3: 1; 3.14 percent of auxiliary agent, namely a mixture of n-octanol and isoamylol in equal proportion; 0.11% catalyst titanium tetrachloride; 0.25 percent of cocatalyst, namely triethyl aluminum, 0.5 percent of defoaming agent, 0.25 percent of antistatic agent and the balance of solvent, wherein the solvent is a mixture of ethylene glycol monobutyl ether and cyclohexane in equal proportion.
Further, the synthesis method of the novel nonionic surfactant comprises the following steps: placing n-sebacic acid and 4-aminoantipyrine in equal molar weight into a round-bottom flask to obtain a first mixed solution, adding xylene in the same volume as the first mixed solution into the round-bottom flask to obtain a second mixed solution, adding 0.02g of toluenesulfonic acid into the second mixed solution, dissolving to obtain a third mixed solution, connecting the round-bottom flask containing the third mixed solution with a water separator, heating and stirring the third mixed solution to be anhydrous, filtering out a reaction product, washing with distilled water for three times, and drying in an oven for one day to obtain A-type n-sebacic acid-antipyrine amide; mixing A type n-sebacic acid-antipyrine amide and 1000g/mol of polyethylene glycol in an equimolar ratio, dissolving in 100mL of xylene, adding 0.02g of toluenesulfonic acid, and after obtaining the required amount of reaction water, obtaining a B type nonionic surfactant, namely the novel nonionic surfactant, by evaporating the solvent under reduced pressure.
The invention provides a petroleum wax removing device integrating chemical wax removal, biological wax removal and mechanical wax removal, which can realize wax removal processes such as wax breaking, wax removal, wax prevention and the like at one time, and realizes efficient, rapid, convenient, self-adaptive and environment-friendly wax removal processes by mutually matching and complementing a plurality of wax removal modes. In the paraffin removal process, the chemical paraffin removal and softening layer is used for realizing high efficiency of mechanical paraffin removal, the paraffin removal tool bit can be protected by the chemical paraffin removal and softening layer, paraffin prevention and paraffin removal treatment are carried out on the inner part of the pipeline by biological paraffin removal after mechanical paraffin removal is finished, dead corners and residual paraffin which cannot be touched by the tool bit can be removed, the inner wall of the pipeline has paraffin prevention performance, the paraffin removal period is prolonged, and the paraffin removal period of the inner wall of the pipeline treated by the device can be up to 146 days. Compared with the traditional hot washing wax removal machine, the petroleum wax removal device can reduce the water consumption by more than 95 percent; the sewage discharge is reduced by more than 90 percent; the comprehensive production cost (water, electricity, labor cost and the like) is reduced by over 75 percent. The novel wax inhibitor is a biological product compounded by a plurality of microbial fermentation liquids and metabolites thereof, can be attached to the surface of residual wax for growth and propagation, and can penetrate into the residual wax for growth and propagation from the inside of the residual wax, the residual wax participates in growth and metabolism in the microbial growth and propagation process, the degradation and the complete removal of the residual wax are realized, the formation of secondary crystallization is prevented, the novel wax inhibitor is safe, convenient, high in efficiency and environment-friendly, the cleaning period of an oil well is greatly prolonged, the cleaning cost is reduced, the problem of wax deposition of a pipeline is fundamentally solved, the input-output ratio is large, the economic benefit is remarkable, the microbial wax inhibitor is automatically degraded, the quality of crude oil is not influenced, and the wax deposition of the oil well is effectively inhibited.
Drawings
FIG. 1 is a schematic structural view of a petroleum wax removal device according to the present embodiment;
fig. 2 is a schematic structural diagram of the wax removing knife provided in this embodiment;
FIG. 3 is a top view of the petroleum wax removal device provided in this embodiment.
Wherein: the device comprises a rope cap 1, a control chamber 2, a main control board 3, a power supply module 4, a first motor 5, a coupler 6, a rotary head 7, a second motor 8, a linear guide rail 9, a sliding table 10, a cutter assembly A, a liquid supply system B, a wax removing cutter 11, a connecting rod 12, a spring 13, a liquid storage chamber 14, a micropump 15, a first electromagnetic valve group 16, a first nozzle group 17, a pipeline 18, a second electromagnetic valve group 19, a second nozzle group 20, an end cover 21, a sealing and correcting ring 22, a petroleum pipe 23, a cutter body 111, a cutter head 112, a spiral blade 113 and a cutter head groove 114.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail below. The test methods used in the following examples are all conventional methods unless otherwise specified; the equipment, raw materials, reagents and the like used are, unless otherwise specified, those commercially available from ordinary sources.
Example 1:
the utility model provides a novel petroleum wax clearing device, as shown in figure 1, includes the rope socket, the control room, the main control board, power module, first motor, the shaft coupling, the rotating head, the second motor, linear guide rail, the slip table, cutter unit spare, liquid supply system, the end cover, the ring is right in the sealing. The rope cap is located at the uppermost end of the paraffin cleaner, the lower end of the rope cap is connected with the control room, the control room is of a hollow cylindrical structure, a main control board, a power module, a first motor and a coupler are sequentially arranged in the control room, the main control board comprises a wireless transmission module and is used for signal transmission with an external controller, the power module supplies power for all electrical elements of the paraffin cleaner, the first motor is connected with the rotating head through the coupler, the rotating head is of a hollow cylindrical structure, a second motor and a linear guide rail which are sequentially connected are arranged in the main control board, the second motor drives the sliding table to reciprocate on the linear guide rail, the end cover is arranged at the front end of the rotating head and is used for sealing the hollow cavity of the rotating head, a group of sealing righting rings which are uniformly distributed are arranged on the outer walls of the control room and the rotating head, and the sealing is formed by the rope cap and the pipeline, therefore, pressure difference is established between the two ends of the paraffin cleaner to push the paraffin cleaner to move in the petroleum pipeline, and meanwhile, the sealing centralizing ring is also used for supporting the paraffin cleaner and ensuring the centering of the paraffin cleaner in the moving process.
The cutter component comprises a wax removing cutter, a connecting rod and a spring, the wax removing cutter is connected to the outer wall of the rotating head through a revolute pair, the middle section of the cutter body of the wax removing cutter is connected with one end of the connecting rod through the revolute pair, the other end of the connecting rod is connected to the sliding table through the revolute pair, the spring is arranged in the middle of the connecting rod,
the liquid supply system is arranged in the rotating head and comprises a grading liquid storage chamber, the grading liquid storage chamber comprises a novel paraffin removal liquid storage chamber and a novel paraffin inhibitor liquid storage chamber, a micropump, a first electromagnetic valve group, a first nozzle group, a pipeline, a second electromagnetic valve group and a second nozzle group, the liquid storage chamber is connected with the micropump, the micropump is connected to the first nozzle group through the first electromagnetic valve group and is connected to the second nozzle group through the second electromagnetic valve group, the first nozzle group is arranged on the end cover, the novel paraffin removal liquid is sprayed along the axial direction, and the second nozzle group is arranged on the side wall of the rotating head and sprays the novel paraffin inhibitor along the radial direction.
As shown in fig. 2, the paraffin removal knife includes a knife body, a knife head, a spiral blade and a knife head groove, wherein the knife head is 2-8 times, preferably 4.5 times, the width of the knife body and is in transition connection with the knife body, the spiral blade is arranged on the back of the paraffin removal knife, and the knife head groove is arranged at the front end of the knife head.
As shown in fig. 3, the plurality of paraffin removal knives are axially arranged on the side wall of the rotating head in an array, the cutting heads of the paraffin removal knives are tightly attached to the pipe wall, the second nozzle group is axially arranged on the side wall of the rotating head in an array and is staggered with the paraffin removal knives, preferably, the number of the paraffin removal knives is 4-16, more preferably, the number of the paraffin removal knives is 6, the number of the nozzles of the second nozzle group is 4-8, and preferably, the number of the nozzles of the second nozzle group is 6.
Example 2:
the device can selectively use different working modes according to the blockage degree of the petroleum pipeline, the working modes can be set according to the blockage degree of the petroleum pipeline, and the working modes include but are not limited to the following two working modes:
a general cleaning mode. When the petroleum pipeline to be cleaned is not seriously blocked, the cutter assembly is in an open state, the second motor drives the sliding table to move forwards, the paraffin removal cutter is opened towards the circumferential direction, and the spring can enable the cutter head of the paraffin removal cutter to be adaptive to petroleum pipelines with different diameters and enable the cutter head to be tightly attached to the inner wall of the petroleum pipeline; then, the liquid supply system starts to work continuously, and the novel paraffin inhibitor is sprayed and attached to the paraffin on the pipe wall through the second nozzle group so as to realize paraffin prevention treatment on the pipe wall after paraffin removal; later first motor unit drive rotating head drives paraffin removal knife tackle spare and carries out high-speed rotary motion, carries out clearing away of mechanical type with the paraffin deposition on the pipe wall to when machinery is clear away, evenly paint in petroleum pipeline inner wall novel paraffin inhibitor through paraffin removal knife, paraffin remover moves along the pipeline under the sealed effect of righting the ring, until clear away paraffin in the pipeline is whole, and evenly paint in petroleum pipeline inner wall novel paraffin inhibitor.
Deep cleaning mode: when a petroleum pipeline is seriously blocked, the cutter assembly is in a tightened state, the second motor drives the sliding table to move backwards, the paraffin removal cutter is closed in the circumferential direction, a cutter head groove on a cutter head of the paraffin removal cutter is clamped into a cutter clamping groove at the front end of the linear guide rail, and spiral cutting edges at the backs of cutter bodies of all the paraffin removal cutters are distributed by using variable-diameter spiral lines, so that a drill-bit-shaped integral structure is formed together, and the actual effect of a drill bit is realized; then, the liquid supply system starts to work continuously, and the novel paraffin removal liquid is sprayed to the paraffin in the pipeline through the first nozzle group and the second nozzle group; then, the first motor set drives the rotating head to drive the paraffin removal cutter assembly to rotate at a high speed, and paraffin close to the center in the pipeline is removed firstly; and then the paraffin in the pipeline is completely removed by utilizing the first working mode.
The above specific operation mode is only an illustration of the preferred operation mode, and the scope of the present invention is not limited thereto, so that other operation modes that can be realized based on the functional modules of the present invention, or equivalent changes realized by the functional modules of the present invention, still belong to the scope covered by the present invention.
Example 3:
one of the main causes of wax deposition on the inner wall of the pipe is due to adsorption of crude oil to wax by a membrane, and in particular, when an oil-water emulsion is brought into contact with the surfaces of the oil pipe and equipment, two types of alignment layers, i.e., a hydrophobic alignment layer and a hydrophilic alignment layer, are generally formed. On one hand, oil-soluble surfactants in hydrocarbons are adsorbed by the surface of an oil pipe or equipment to form an oriented layer with hydrophobic tendency and a crude oil film; on the other hand, the crude oil film is broken when it is contacted with water containing no surfactant, and a hydrophilic alignment layer is formed on the surface thereof. At this time, a large amount of surfactant which is not adsorbed by the metal surface in the hydrocarbon begins to be adsorbed on the new oil-water interface in a hydrophilic group water absorption and hydrophobic group oil absorption mode, so that a hydrophobic layer consisting of double-layer surfactant molecules is formed on the metal surface, an oil film thin layer infiltrates the surfaces of the oil pipe and the equipment and extends to the periphery, and when the temperature is reduced to be lower than the paraffin crystallization temperature, a wax crystal grid network is formed on the oil film and continuously grows up to form deposition water. The cycle of this process can cause the wax layer to grow thicker. Based on the technical problems, the invention provides a novel dewaxing liquid which can effectively inhibit the adsorption effect of a crude oil film, the novel dewaxing liquid comprises a nonionic surfactant, an auxiliary agent, a catalyst, a cocatalyst and a solvent, and the novel dewaxing liquid comprises the following specific components:
4.5 to 7.5 percent of nonionic surfactant which is a mixture of novel nonionic surfactant, fatty alcohol-polyoxyethylene ether, poly (octadecyl methacrylate) and polydimethylsiloxane 5:2:3: 1;
2.75 to 3.4 percent of auxiliary agent which is a mixture of n-octanol and isoamylol in equal proportion;
0.05-0.11% of catalyst titanium tetrachloride;
0.21 to 0.25 percent of cocatalyst, triethyl aluminum, 0.5 percent of defoamer, 0.25 percent of antistatic agent and the balance of solvent, wherein the solvent is one or more selected from ethylene glycol monobutyl ether, propylene glycol ether, cyclohexane, normal hexane, ethyl acetate, butyl ester or trichloroethylene, and the preferred mixture is the mixture of ethylene glycol monobutyl ether and cyclohexane in equal proportion.
Optionally, the novel dewaxing liquid comprises the following specific components:
4.5 percent of nonionic surfactant which is a mixture of novel nonionic surfactant, fatty alcohol-polyoxyethylene ether, poly (octadecyl methacrylate) and polydimethylsiloxane 5:2:3: 1;
2.75 percent of auxiliary agent is a mixture of n-octanol and isoamylol in equal proportion;
0.05% of catalyst titanium tetrachloride;
0.21 percent of cocatalyst, triethyl aluminum, 0.5 percent of defoaming agent, 0.25 percent of antistatic agent and the balance of solvent, wherein the solvent is a mixture of ethylene glycol monobutyl ether and cyclohexane in equal proportion, and the component is marked as X1.
Optionally, the novel dewaxing liquid comprises the following specific components:
7.5 percent of nonionic surfactant which is a mixture of novel nonionic surfactant, fatty alcohol-polyoxyethylene ether, poly (octadecyl methacrylate) and polydimethylsiloxane 5:2:3: 1;
3.4 percent of auxiliary agent, namely a mixture of n-octanol and isoamylol in equal proportion;
0.11% catalyst titanium tetrachloride;
0.25 percent of cocatalyst, namely triethyl aluminum, 0.5 percent of defoaming agent, 0.25 percent of antistatic agent and the balance of solvent, wherein the solvent is a mixture of ethylene glycol monobutyl ether and cyclohexane in equal proportion, and the component is marked as X2.
Optionally, the novel dewaxing liquid comprises the following specific components:
5.25 percent of nonionic surfactant which is a mixture of novel nonionic surfactant, fatty alcohol-polyoxyethylene ether, poly (octadecyl methacrylate) and polydimethylsiloxane 5:2:3: 1;
3.14 percent of auxiliary agent, namely a mixture of n-octanol and isoamylol in equal proportion;
0.11% catalyst titanium tetrachloride;
0.25 percent of cocatalyst, namely triethyl aluminum, 0.5 percent of defoaming agent, 0.25 percent of antistatic agent and the balance of solvent, wherein the solvent is a mixture of ethylene glycol monobutyl ether and cyclohexane in equal proportion, and the component is marked as X3.
Optionally, the novel dewaxing liquid comprises the following specific components:
5.25 percent of nonionic surfactant, namely a mixture of fatty alcohol-polyoxyethylene ether, poly (octadecyl methacrylate) and polydimethylsiloxane 2:3: 1;
3.14 percent of auxiliary agent, namely a mixture of n-octanol and isoamylol in equal proportion;
0.11% catalyst titanium tetrachloride;
0.25 percent of cocatalyst, namely triethyl aluminum, 0.5 percent of defoaming agent, 0.25 percent of antistatic agent and the balance of solvent, wherein the solvent is a mixture of ethylene glycol monobutyl ether and cyclohexane in equal proportion, and the component is marked as X4.
The synthesis method of the novel nonionic surfactant comprises the following steps: putting equimolar n-sebacic acid and 4-aminoantipyrine into a round-bottom flask to obtain a first mixed solution, adding xylene which is equal to the volume of the first mixed solution into the round-bottom flask to obtain a second mixed solution, adding 0.02g of toluenesulfonic acid into the second mixed solution, dissolving to obtain a third mixed solution, connecting the round-bottom flask containing the third mixed solution with a water separator, heating and stirring the third mixed solution to be anhydrous, filtering out a reaction product, washing with distilled water for three times, and then obtaining a third mixed solutionDrying in an oven for one day to obtain A type n-sebacic acid-antipyrine amide; mixing A type n-sebacic acid-antipyrine amide and 1000g/mol of polyethylene glycol in an equimolar ratio, dissolving in 100mL of xylene, adding 0.02g of toluenesulfonic acid, obtaining the required reaction water amount, and evaporating the solvent under reduced pressure to obtain B type nonionic surfactant, namely the novel nonionic surfactant, wherein the molecular formula of the novel nonionic surfactant is
Figure BDA0001863029300000081
The paraffin removal effect of the novel paraffin removal liquid is detected, and the specific method comprises the following steps: respectively adding 200mL of wax-containing crude oil into 500mL of flasks, numbering the flasks as 1-5, respectively adding 30mL of X1, X2, X3, X4 and CK (a mixture of ethylene glycol monobutyl ether and cyclohexane in equal proportion) into the flasks 1-5, standing for 30min, detecting the wax content before and after treatment according to the oil and gas industry standard SY/T7550-2000, and calculating the wax content reduction ratio, wherein the specific ratio is shown in Table 1.
TABLE 1 paraffin removal effect test results
Figure BDA0001863029300000082
As can be seen from the results in table 1, the paraffin removal rate of the X3 group is the highest, and the paraffin removal rates of the X1 and X2 groups are lower than that of the X3 group but significantly higher than that of the X4 group and the CK group, so that the novel nonionic surfactant participates in paraffin removal and is a key factor for improving the paraffin removal rate, and therefore, preferably, the novel paraffin removal liquid comprises the following specific components:
5.25 percent of nonionic surfactant which is a mixture of novel nonionic surfactant, fatty alcohol-polyoxyethylene ether, poly (octadecyl methacrylate) and polydimethylsiloxane 5:2:3: 1;
3.14 percent of auxiliary agent, namely a mixture of n-octanol and isoamylol in equal proportion;
0.11% catalyst titanium tetrachloride;
0.25 percent of cocatalyst, namely triethyl aluminum, 0.5 percent of defoaming agent, 0.25 percent of antistatic agent and the balance of solvent, wherein the solvent is a mixture of ethylene glycol monobutyl ether and cyclohexane in equal proportion.
Example 4:
another major cause of wax deposition on the inner wall of the tubing is due to the adsorption of the wax by the oil droplets, and in particular, the energy of the oil-water emulsion as it moves up the tubing under turbulent agitation is sufficient to cause isolated droplets to move radially and collide with the tubing wall. There is relevant data showing that each drop in the flow within 20m from the pump inlet makes more than 10 contacts with the tubing wall, where the drops containing bitumen, gums and paraffins are adsorbed by the oil film on the metal surface, where the drops with sufficient kinetic energy enter the oil film and the paraffins are deposited on the tubing wall. The microorganism is small in individual, the cell wall has a special structure (the main chemical component of the cell wall is a three-dimensional network structure formed by a mucilaginous compound, polysaccharide is filled among the network structures), the surfaces of thalli are provided with flagella, the flagella have strong viscosity and high growth and reproduction speed, so that certain microorganism colonies can be attached to the surface of an object to form a compact microorganism protective film, crystal nuclei are shielded, the liquid drop adsorption can be inhibited, and in order to obtain a novel efficient wax inhibitor, the invention carries out measurement aiming at one or more of the following microorganisms, and specifically, the microorganisms comprise:
cacao-like two-spore (lasiodipia pseudotheobromae) purchased from China general microbiological culture Collection center with the collection number of CGMCC3.18070 and the number of S1;
fomes pinicola (Rhodomitopsis feei) purchased from China general microbiological culture Collection center with the collection number of CGMCC5.929 and the number of S2;
stenotrophomonas rhizophila (Stenotrophomonas rhizophila) purchased from China general microbiological culture Collection center with the preservation number of CGMCC1.15515 and the number of S3;
ceriporia pinicola (Ceriporia viridans) purchased from China general microbiological culture Collection center with the collection number of CGMCC5.832 and the number of S4;
bacillus aryabhattai (Bacillus aryabhattai) which is purchased from China general microbiological culture Collection center with the preservation number of CGMCC1.16121 and the number of S5;
bacillus thiaminolyticus (Aneurinibacillus aniurilinyticus) purchased from China general microbiological culture Collection center with the preservation number of CGMCC1.16118 and the number of S6;
paenibacillus polymyxa (Paenibacillus polymyxa) purchased from China general microbiological culture Collection center with the preservation number of CGMCC1.15984 and the number of S7;
aspergillus nidulans (Aspergillus nidulans) purchased from China general microbiological culture Collection center with the preservation number of CGMCC3.15737 and the number of S8;
actinoplanes sporangium (Actinoplanes capillaceus) is purchased from China general microbiological culture Collection center with the collection number of CGMCC4.1011 and the number of S9.
Compounding the wax inhibitor to be tested according to the following formula, wherein the wax inhibitor to be tested is selected from several strains, and the formula compounded according to the parts by weight is as follows:
the formula A is as follows: s1: S2: S3: S4: S5: S6: S7: S8: S9: 10:5:5:10:5:3:2:5:10
And the formula B is as follows: s1, S2, S4, S5, S6, S7, S9, 20, 15, 5, 7, 5, 10, 3, respectively
And a formula C: s2, S3, S4, S6, S7, S8, S9, 5:5:10:5:2:5:20
And (3) formula D: s1, S3, S4, S5, S6, S7, S8, 10, 12, 3, 6, 2, 5, 7, etc
And a formula E: s1, S2, S4, S5, S6, S7, S8, S9, 15:5:11:5:3:2:5:10
And (3) formula F: s1: S3: S4: S5: S6: S7: S8: 2:4:17:10:5:3:1
The paraffin removal effect of the paraffin inhibitor and a single strain is detected, and the specific method comprises the following steps: respectively adding 100mL of wax-containing crude oil into 500mL (wax-proof bacteria inorganic salt culture solution: S1, S2, S3, S4, S5, S6, S7, S8, S9, formula A, formula B, formula C, formula D and formula E, the mass of thallus accounts for 25% of the mass of the culture solution) and a control group (CK1, CK2, CK1 and CK2 are 500mL inorganic salt culture solutions), co-culturing for 5h on a rocking bed at 120r/min and 35 ℃, taking a culture medium without inoculated bacteria as a blank control, detecting the summary wax content of the co-cultured crude oil according to the petroleum and gas industry standard SY/T7550-2000, and calculating the wax content reduction ratio, which is specifically shown in Table 2.
TABLE 2 paraffin removal effect test results
Figure BDA0001863029300000101
Figure BDA0001863029300000111
The wax control effect of the wax control agent and a single strain is detected, and the microorganism wax control rate is determined by a static method, wherein the specific method comprises the following steps: adding 500mL of wax-containing crude oil into 100mL of samples (wax-proof bacteria inorganic salt culture solution: S1, S2, S3, S4, S5, S6, S7, S8, S9, formula A, formula B, formula C, formula D and formula E, wherein the mass of thalli accounts for 25% of the mass of the culture solution, and the thalli are cultured to logarithmic phase by a shaking table) and control groups (CK1, CK2, CK1 and CK2 are 100mL of inorganic salt culture solution), respectively, incubating for 48h by a shaking table under the conditions of 120r/min and 35 ℃, then weighing common steel (10 cm in length and 10cm in width), soaking in the mixed solution, reducing the temperature of the mixed solution from 35 ℃ to 18 ℃, standing for 72h at 18 ℃, taking out the steel, washing the crude oil by isopropanol, standing and airing for 2h, weighing, calculating the wax deposition amount on the steel sheet in 72h, and obtaining the wax-proof rate, wherein the wax content (CK content) is the wax-wax increase of the wax sample group/wax-increasing amount, the increase of the wax content in the CK group was (CK1+ CK2)/2, and the results of the measurements are shown in table 3.
TABLE 3 results of wax control Effect test
Sample (I) Increment (g) Wax control ratio Sample (I) Increment (g) Wax control ratio
CK1 6.78 0 CK2 7.06 0
S1 3.54 48.84% S8 4.29 38.01%
S2 2.79 59.68% S9 2.25 67.49%
S3 4.23 38.87% Formulation A 0.72 89.60%
S4 4.11 40.61% Formulation B 1.89 72.69%
S5 2.37 65.75% Formulation C 0.12 98.27%
S6 3.78 45.38% Formulation D 1.04 84.97%
S7 4.41 36.27% Formulation E 4.29 38.01%
As can be seen from the results in tables 2 and 3, the formula C has the best paraffin control effect, the formula D has the best paraffin control effect and has a stronger paraffin control effect, and the formula D is selected to prepare the product.
In conclusion, the invention provides the petroleum wax removing device integrating chemical wax removal, biological wax removal and mechanical wax removal, which can realize wax removal processes such as wax breaking, wax removal, wax prevention and the like at one time, and the wax removal processes are matched and supplemented with each other in a plurality of wax removal modes, so that the efficient, quick, convenient, self-adaptive and environment-friendly wax removal process is realized. In the paraffin removal process, the chemical paraffin removal and softening layer is used for realizing high efficiency of mechanical paraffin removal, the paraffin removal tool bit can be protected by the chemical paraffin removal and softening layer, paraffin prevention and paraffin removal treatment are carried out on the inner part of the pipeline by biological paraffin removal after mechanical paraffin removal is finished, dead corners and residual paraffin which cannot be touched by the tool bit can be removed, the inner wall of the pipeline has paraffin prevention performance, the paraffin removal period is prolonged, and the paraffin removal period of the inner wall of the pipeline treated by the device can be up to 146 days.
The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention, and it is therefore to be understood that the invention is not limited by the scope of the appended claims.

Claims (4)

1. A novel petroleum wax removing device is characterized by comprising a rope cap, a control room, a main control board, a power supply module, a first motor, a coupler, a rotating head, a second motor, a linear guide rail, a sliding table, a cutter assembly, a liquid supply system, an end cover and a sealing righting ring, wherein the rope cap is positioned at the uppermost end of a wax remover, the lower end of the rope cap is connected with the control room, the control room is of a hollow cylindrical structure, and the main control board, the power supply module, the first motor and the coupler which are sequentially connected are arranged in the control room; the main control board comprises a wireless transmission module for transmitting signals with an external controller, the power module supplies power for all electrical elements of the paraffin cleaner, the first motor is connected with the rotating head through a coupler, the rotating head is of a hollow cylindrical structure, a second motor and a linear guide rail which are sequentially connected are arranged in the rotating head, the second motor drives the sliding table to reciprocate on the linear guide rail, the end cover is arranged at the front end of the rotating head and used for sealing the hollow cavity of the rotating head, a group of sealing and centering rings which are uniformly distributed are arranged on the outer walls of the control chamber and the rotating head and form sealing with a pipeline, the cutter assembly comprises a paraffin cleaning cutter, a connecting rod and a spring, the paraffin cleaning cutter is connected on the outer wall of the rotating head through a revolute pair, the middle cutter body of the paraffin cleaning cutter is connected with one end of the connecting rod through a revolute pair, and the other end of the connecting rod is connected to the sliding table through a revolute pair, the centre of connecting rod is provided with the spring, liquid feed system sets up the inside at the rotating head, liquid feed system is including hierarchical stock solution room, hierarchical stock solution room is including novel paraffin removal liquid stock solution room, be provided with novel paraffin removal liquid in the novel paraffin removal liquid stock solution room.
2. The device according to claim 1, wherein the novel dewaxing solution comprises a nonionic surfactant, an auxiliary agent, a catalyst, a cocatalyst and a solvent.
3. The device according to claim 2, wherein the novel dewaxing liquid comprises the following components: 4.5 to 7.5 percent of nonionic surfactant, namely a mixture of B type nonionic surfactant, fatty alcohol-polyoxyethylene ether, poly (octadecyl methacrylate) and polydimethylsiloxane 5:2:3: 1; 2.75 to 3.4 percent of auxiliary agent which is a mixture of n-octanol and isoamylol in equal proportion; 0.05-0.11% of catalyst titanium tetrachloride; 0.21 to 0.25 percent of cocatalyst, namely triethyl aluminum, 0.5 percent of defoaming agent, 0.25 percent of antistatic agent and the balance of solvent, wherein the solvent is a mixture of ethylene glycol monobutyl ether and cyclohexane in equal proportion, and the synthesis method of the B-type nonionic surfactant comprises the following steps: placing n-sebacic acid and 4-aminoantipyrine in equal molar weight into a round-bottom flask to obtain a first mixed solution, adding xylene in the same volume as the first mixed solution into the round-bottom flask to obtain a second mixed solution, adding 0.02g of toluenesulfonic acid into the second mixed solution, dissolving to obtain a third mixed solution, connecting the round-bottom flask containing the third mixed solution with a water separator, heating and stirring the third mixed solution to be anhydrous, filtering out a reaction product, washing with distilled water for three times, and drying in an oven for one day to obtain A-type n-sebacic acid-antipyrine amide; the type a n-sebacic acid-antipyrine amide and 1000g/mol of polyethylene glycol were mixed in an equimolar ratio and dissolved in 100mL of xylene, 0.02g of toluene sulfonic acid was added, and after obtaining the required amount of reaction water, the type B nonionic surfactant was obtained by evaporating the solvent under reduced pressure.
4. The device according to claim 2, wherein the novel dewaxing liquid comprises the following components: 5.25 percent of nonionic surfactant, namely a mixture of B type nonionic surfactant, fatty alcohol-polyoxyethylene ether, poly (octadecyl methacrylate) and polydimethylsiloxane 5:2:3: 1; 3.14 percent of auxiliary agent, namely a mixture of n-octanol and isoamylol in equal proportion; 0.11% catalyst titanium tetrachloride; 0.25% of cocatalyst, namely triethyl aluminum, 0.5% of defoaming agent, 0.25% of antistatic agent and the balance of solvent, wherein the solvent is a mixture of ethylene glycol monobutyl ether and cyclohexane in equal proportion, and the synthesis method of the B-type nonionic surfactant comprises the following steps: placing n-sebacic acid and 4-aminoantipyrine in equal molar weight into a round-bottom flask to obtain a first mixed solution, adding xylene in the same volume as the first mixed solution into the round-bottom flask to obtain a second mixed solution, adding 0.02g of toluenesulfonic acid into the second mixed solution, dissolving to obtain a third mixed solution, connecting the round-bottom flask containing the third mixed solution with a water separator, heating and stirring the third mixed solution to be anhydrous, filtering out a reaction product, washing with distilled water for three times, and drying in an oven for one day to obtain A-type n-sebacic acid-antipyrine amide; the type a n-sebacic acid-antipyrine amide and 1000g/mol of polyethylene glycol were mixed in an equimolar ratio and dissolved in 100mL of xylene, 0.02g of toluene sulfonic acid was added, and after obtaining the required amount of reaction water, the type B nonionic surfactant was obtained by evaporating the solvent under reduced pressure.
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