CN106928976A - Expanding material composition containing polyethylene glycol and from suspended prop and its application and preparation method - Google Patents
Expanding material composition containing polyethylene glycol and from suspended prop and its application and preparation method Download PDFInfo
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- CN106928976A CN106928976A CN201511021313.6A CN201511021313A CN106928976A CN 106928976 A CN106928976 A CN 106928976A CN 201511021313 A CN201511021313 A CN 201511021313A CN 106928976 A CN106928976 A CN 106928976A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/60—Compositions for stimulating production by acting on the underground formation
- C09K8/80—Compositions for reinforcing fractures, e.g. compositions of proppants used to keep the fractures open
- C09K8/805—Coated proppants
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L71/00—Compositions of polyethers obtained by reactions forming an ether link in the main chain; Compositions of derivatives of such polymers
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/25—Methods for stimulating production
- E21B43/26—Methods for stimulating production by forming crevices or fractures
- E21B43/267—Methods for stimulating production by forming crevices or fractures reinforcing fractures by propping
Abstract
The invention discloses a kind of expanding material composition containing polyethylene glycol and from suspended prop and its application and preparation method.Expanding material composition of the invention is coated on proppant body, expanding material composition can be with Fast-swelling in water, firm hydrated sheath is formed in proppant particles outer surface, reduce the relative density of proppant particles, a small amount of organic molecule in composition can be stretched in water, increase the viscosity of water, this is also beneficial to suspension of the proppant particles in water.Simultaneously, it is of the invention can be easy to operate without configuring fracturing fluid using water as fracturing fluid from suspended prop, equipment is simple, avoid and use organic solvent, it is also possible to reduce the viscosity of fracturing fluid, reduce the conveying difficulty of fracturing fluid, and without additionally adding macromolecular compound in fracturing fluid, macromolecular compound is avoided as fracturing fluid enters underground, oil-gas mining hole is blocked, pollution of the macromolecular compound to ground environment is decreased.
Description
Technical field
The present invention relates to fluid ore deposit exploitation field, in particular it relates to a kind of expanding material composition containing polyethylene glycol and from suspended prop and its application and preparation method.
Background technology
Often needed by fracturing technique in the recovery process of the fluid ore deposit such as oil, natural gas, i.e., using hydraulic action, oil-gas Layer is formed a kind of method in crack, so also known as hydraulic fracturing.Hydraulic fracturing is exactly, using ground high-pressure pump, the fracturing fluid with viscosity higher to be squeezed to oil reservoir by pit shaft.When the speed for injecting fracturing fluid exceedes the absorbability of oil reservoir, then pressure very high is formed on the oil reservoir of shaft bottom, when this pressure exceedes the shaft bottom fracture pressure of reservoir rock nearby, oil reservoir will be pressed off and produce crack.At this moment, fracturing fluid on and on is squeezed to oil reservoir, crack will continue to oil reservoir interior expansion.In order to keep the crack for pressing off to be in open configuration, then the load fluid with proppant particles is clamp-oned to oil reservoir, load fluid enters after crack, crack on the one hand can be made to continue to extend forward, on the other hand the crack for having pressed off can be supported, it is not closure.Followed by injection displacement fluid, the load fluid of pit shaft is all replaced and enters crack, fracture support is got up with proppant.Finally, outside the high viscosity fracturing fluid of injection can automatically degrade discharge pit shaft, the crack that one or more length is not waited is left in oil reservoir, makes to set up a new fluid passage between oil reservoir and pit shaft.After pressure break, oil gas well yield can typically increase substantially.
In existing proppant-fracturing fluid system, in order to prevent proppant particles from settling, it usually needs high viscosity fracturing fluid makes particle suspend, and this fracturing fluid generally increases the viscosity of fluid as thickener by adding water miscible polymer.But special operation with liquid and equipment is needed in this fracturing work, the pump power consumed when simultaneously by the specified location of high-viscosity fracturing fluid feeding underground and the row of returning is larger, and the macromolecular compound used in fracturing fluid enters stratum in company with fracturing fluid, being partially left at the macromolecular compound of underground can block the hole on stratum, cause oil pump capacity to decline and can cause the pollution on stratum.
The content of the invention
It is an object of the invention to provide a kind of expanding material composition containing polyethylene glycol and from suspended prop and its application and preparation method, the expanding material composition can apply to prepare that relative density is low, can be suspended in clear water from suspended prop, to solve to need high viscosity fracturing fluid to carry out suspended proppant particles in the prior art, and high-viscosity fracturing fluid causes the technical problem of fracturing fluid difficulty of transportation, while the macromolecular compound added in can solving fracturing fluid blocks fuel-displaced hole and the technical problem polluted to stratum.
To achieve these goals, the present invention provides a kind of expanding material composition containing polyethylene glycol, the expanding material composition contains polyethylene glycol and natural macromolecular material, wherein, relative to the polyethylene glycol of 100 weight portions, the content of the natural macromolecular material is 3-24 weight portions, and the natural macromolecular material is natural plant gum family macromolecule material and/or animal glue family macromolecule material.
The present invention also provides a kind of from suspended prop, this includes that proppant body and cladding or part are coated on the water-soluble intumescent material on the proppant body from suspended prop, the water-soluble intumescent material makes above-mentioned expanding material composition bond and coat by binding agent and curing agent or part is coated on the proppant body, relative to the proppant body of 100 weight portions, the consumption of the binding agent is 2.5-18 weight portions, the consumption of the curing agent is 0.02-1.8 weight portions, and the consumption of the expanding material composition is 2.5-18 weight portions.
The present invention also provides the above-mentioned preparation method from suspended prop, and the method is comprised the following steps：
(1) by proppant body and binding agent and curing agent, dispersion mixing is uniform at the first temperature, obtain being stained with the granular aggregates of binding agent and/or curing agent, relative to the proppant body of 100 weight portions, the consumption of the binding agent is 2.5-18 weight portions, and the consumption of the curing agent is 0.02-1.8 weight portions；
(2) dispersion mixing is uniform so that the expanding material composition is coated in the granular aggregates at the second temperature to make the granular aggregates and expanding material composition, obtain granular from suspended prop, wherein, relative to the proppant body of 100 weight portions, the consumption of the expanding material composition is 2.5-18 weight portions.
The present invention also provides the above-mentioned application from suspended prop in terms of fluid ore deposit exploitation.
By above-mentioned technical proposal, expanding material composition is coated on proppant body surface, expanding material composition can be with Fast-swelling in water, firm hydrated sheath is formed in proppant particles outer surface, reduce the relative density from suspended proppant particles, a small amount of organic molecule in expanding material composition can be stretched in water, increase the viscosity of water, and this is also beneficial to the suspension in water from suspended proppant particles.Simultaneously, it is of the invention can be easy to operate without configuring fracturing fluid using water as fracturing fluid from suspended prop, equipment is simple, avoid and use organic solvent, it is also possible to reduce the viscosity of fracturing fluid, reduce the conveying difficulty of fracturing fluid, and without additionally adding macromolecular compound in fracturing fluid, macromolecular compound is avoided as fracturing fluid enters underground, oil-gas mining hole is blocked, pollution of the macromolecular compound to ground environment is decreased.
Other features and advantages of the present invention will be described in detail in subsequent specific embodiment part.
Specific embodiment
Specific embodiment of the invention is described in detail below.It should be appreciated that specific embodiment described herein is merely to illustrate and explain the present invention, it is not intended to limit the invention.
The present invention provides a kind of expanding material composition containing polyethylene glycol, the expanding material composition contains polyethylene glycol and natural macromolecular material, wherein, relative to the polyethylene glycol of 100 weight portions, the content of the natural macromolecular material is 3-24 weight portions, and the natural macromolecular material is natural plant gum family macromolecule material and/or animal glue family macromolecule material.Expanding material composition of the invention is coated on proppant body surface, expanding material composition can be with Fast-swelling in water, firm hydrated sheath is formed in proppant particles outer surface, reduce the relative density from suspended proppant particles, a small amount of organic molecule in expanding material composition can be stretched in water, increase the viscosity of water, this is also beneficial to the suspension in water from suspended proppant particles.Simultaneously, it is of the invention can be easy to operate without configuring fracturing fluid using water as fracturing fluid from suspended prop, equipment is simple, avoid and use organic solvent, it is also possible to reduce the viscosity of fracturing fluid, reduce the conveying difficulty of fracturing fluid, and without additionally adding macromolecular compound in fracturing fluid, macromolecular compound is avoided as fracturing fluid enters underground, oil-gas mining hole is blocked, pollution of the macromolecular compound to ground environment is decreased.
According to the present invention, the implication of polyethylene glycol is well known to those skilled in the art, and is water-soluble polymer, with the structural formula as shown in formula (1), wherein, the value of n is not required particularly, can be well known to those skilled in the art, such as n can be 1-103Integer.Contain a large amount of hydrophilic polar groups in the molecule of polyethylene glycol, solubility property is good in water, be conducive to expanding material composition Fast-swelling in water, and the polar group in polyethylene glycol can be extended in water, the hydrated sheath for helping stabilization to be formed, further to make proppant particles suspend in water.
According to the present invention, the weight average molecular weight of polyethylene glycol can change in very large range, for example can be 50-20000, under preferable case, the weight average molecular weight of polyethylene glycol can be 200-8000, and weight average molecular weight polyethylene glycol within the above range has suitable dissolubility in water, so that the expanding material composition of composition has suitable swelling character, the hydrated sheath with Suitable Density can be formed in water, so as to reduce the global density of proppant particles, it is suspended on the water surface.The polyethylene glycol for meeting above-mentioned condition can be commercially available, for example, PEG 200, PEG 300, PEG 400, PEG 600, PEG 1000, PEG 1450, PEG 3350, PEG 4000, polyethylene glycol of PEG 8000 of Dow Chemical production etc..
According to the present invention, natural macromolecular material can be natural plant gum family macromolecule material and/or animal glue family macromolecule material.Wherein, specifically, natural plant gum family macromolecule material can be preferably one or more in Arabic gum, tragacanth, locust bean gum and rubber made from soybean cake；Animal glue family macromolecule material can be preferably one or more in gelatine, gelatin and casein.The natural macromolecular material of mentioned kind can constitute expanding material composition with polyacrylamide, the swelling behavior of expanding material composition can be made to be increased, meanwhile, relative to artificial synthesized macromolecular material, degradable natural macromolecular material can reduce the pollution to environment.The natural macromolecular material for meeting above-mentioned condition can be commercially available, for example, purchased from DL-80, DL-100 Arabic gum of Tai'an your kind effort Jiao Ye Co., Ltds；Purchased from the locust bean gum of Jining Hua Kai resin Co., Ltd；The soybean separation protein white powder of Zhengzhou dragon biochemistry chemical product Co., Ltd production, decentralized；Gelatine, gelatin of Jinan Hong Ju Chemical Co., Ltd.s etc..
The present invention also provides a kind of from suspended prop, this includes that proppant body and cladding or part are coated on the water-soluble intumescent material on the proppant body from suspended prop, the water-soluble intumescent material makes above-mentioned expanding material composition bond and coat by binding agent and curing agent or part is coated on the proppant body, relative to the proppant body of 100 weight portions, the consumption of the binding agent is 2.5-18 weight portions, the consumption of the curing agent is 0.02-1.8 weight portions, and the consumption of the expanding material composition is 2.5-18 weight portions.It is of the invention that above-mentioned expanding material composition is coated on the proppant particles that the formation of proppant body outer surface has coated expanding material from suspended prop, when the proppant particles enter in water, the expanding material composition on surface can dissolve rapidly or swelling, one layer of hydrated sheath of expansion is formed on proppant particles surface, so that the density of proppant particles is substantially reduced, so as to be suspended on the water surface.
According to the present invention, above-mentioned proppant body can be aggregate and/or pre-coated membrane bone material.
Wherein, aggregate can be that existing various can be used in preparing from the aggregate of suspended prop, under preferable case, aggregate can be selected from one or more in quartz sand, haydite, metallic particles, globular glass particle, sintered bauxite, sintered alumina, sintered zirconia, synthetic resin, precoated sand, the shell particle of crushing.The aggregate density of mentioned kind is suitable, heat endurance is good and intensity is higher, and it is possessed into good mechanical property from suspended prop with expanding material composition of the invention is prepared.
According to the present invention, pre-coated membrane bone material can be coated on the pre- film covered resin layer of aggregate surface including above-mentioned aggregate and cladding or part.Wherein, pre- film covered resin layer is preferably and contains one or more in phenolic resin, epoxy resin, furane resins, polyester resin and unsaturated polyester resin.Specifically, above-mentioned pre- film covered resin can be selected from species well-known to those skilled in the art, for example, can be bisphenol A type epoxy resin, bisphenol f type epoxy resin, thermoplastic phenolic resin, thermosetting phenolic resin, 3301 unsaturated polyester resins, dimethylbenzene unsaturated polyester resin or furfuryl alcohol resin.
According to the present invention, the average particulate diameter of proppant body can change in very large range, it is possible to reasonably be selected according to actual needs, for example, the particle diameter of proppant body can be 6-200 mesh, preferably can be 10-100 mesh.
According to the present invention, the species of above-mentioned binding agent can be well known to those skilled in the art for the conventional binding agent from suspended prop preparation field, preferably, binding agent can be selected from one or more in phenolic resin, epoxy resin, unsaturated polyester resin, heterocyclic polymer bonding agent.The binding agent of mentioned kind is more preferable for the bond effect of expanding material composition and granular aggregates, and will not make to reunite and influence the particle size and dispersiveness from suspended prop from suspended proppant particles.
Preferably, phenolic resin can be thermoplastic phenolic resin or thermosetting phenolic resin；Epoxy resin can be the epoxy resin of 0.09-0.14mol/100g using epoxide equivalent；Preferably bisphenol A type epoxy resin, more preferably epoxy resin E-55 (616), E-51 (618), E-44 (6101), E-42 (634), E-35 (637), E-20 (601), E-12 (604), E-06 (607), E-03 (609)；Unsaturated polyester resin can be one or more in m-phthalate unsaturated polyester resin, metaphenylene unsaturated polyester resin, xylol type unsaturated polyester resin, Bisphenol a unsaturated polyester resin, halo unsaturated polyester resin, vinyl ester resin；It is preferred that m-phthalate unsaturated polyester resin model can be 191 or 196；Metaphenylene unsaturated polyester resin model can be that 199, xylol type unsaturated polyester resin resin model can be one or more in 2608,902A3, Xm-1, Xm-2；Bisphenol a unsaturated polyester resin model can be one or more in 197,3301,323；Heterocyclic polymer bonding agent can be selected from one or more in polyimides, polybenzimidazoles, polyphenylene sulfide, polydiphenyl ether.
According to the present invention, in order to improve the covering property of binding agent, under preferable case, it is above-mentioned to include curing agent from suspended prop, what the species of curing agent can be well known to those skilled in the art, for example can be aliphatic amine and its addition product, tertiary amine and its salt, aromatic amine and its modified body, imidazoles, acid anhydrides, acyl peroxide, lipid peroxidation, paraformaldehyde, hexamethylenetetramine, phenolic aldehyde amine, diethylenetriamine, one kind in triethylene tetramine, what the consumption of curing agent can be well known to those skilled in the art, preferably hardener dose can be the 0.5-10% of weight of binder.
The present invention also provides the above-mentioned preparation method from suspended prop, and the method is comprised the following steps：
(1) by proppant body and binding agent and curing agent, dispersion mixing is uniform at the first temperature, obtain being stained with the granular aggregates of binding agent and/or curing agent, wherein, relative to the proppant body of 100 weight portions, the consumption of the binding agent is 2.5-18 weight portions, and the consumption of the curing agent is 0.02-1.8 weight portions；
(2) dispersion mixing is uniform so that the expanding material composition is coated in the granular aggregates at the second temperature to make the granular aggregates and expanding material composition, obtain granular from suspended prop, wherein, relative to the proppant body of 100 weight portions, the consumption of the expanding material composition is 2.5-18 weight portions.
Preparation method from suspended prop of the invention can coat binding agent, curing agent and expanding material composition in proppant body surface, the water-soluble expanding material of the cladding for obtaining can be using water as fracturing fluid from suspended prop, simultaneously, expanding material composition from suspended prop surface is rapid swelling in water, form the hydrated sheath of expansion, the relative density from suspended proppant particles is reduced, it is suspended on the water surface, consequently facilitating the conveying of fracturing fluid.
In the preparation method from suspended prop of the invention, in order to improve the covered effect that water-soluble expanding material coats binding agent, granular aggregates may be pretreated, processing method is well known to those skilled in the art, for example, the steps such as scouring, drying, screening can be preferably first passed through, to remove the moisture in aggregate, is easy to aggregate preferably to be combined with binding agent.
In the preparation method from suspended prop of the invention, the first Contact Temperature and the second Contact Temperature are not required particularly, as long as meet above-mentioned binding agent can melt to be coated on water-soluble intumescent particles surface under the first Contact Temperature；Above-mentioned expanding material composition can be bonded under the second Contact Temperature with binding agent.Under preferable case, the first temperature can be 150-240 DEG C；Second temperature can be 100-190 DEG C.At the temperature disclosed above, binding agent can be uniformly wrapped on aggregate surface, and expanding material composition can be adhere closely on binding agent, obtain expanding material composition uniformly cladding from suspended proppant particles.
The present invention also provides the above-mentioned application from suspended prop in terms of fluid ore deposit exploitation.
According to the present invention, the exploitation of fluid ore deposit can specifically include natural gas, oil, shale oil, shale gas, fresh water, salt solution, the exploitation of hot water.Preferably, fluid ore deposit can be one or more in oil, natural gas, shale oil and shale gas.
The present invention is further illustrated below by embodiment, but the present invention is not therefore subject to any restriction.In following embodiments of the invention, quartz sand, globular glass particle and haydite are purchased from Hebei Jing Hang mineral products Co., Ltd；Sintered alumina and sintered zirconia are purchased from Jiaxing Jie Naier hard alloy Co., Ltd；Polyethylene glycol is purchased from Dow Chemical, and remaining reagent is commercially available prod.
Embodiment 1
The present embodiment is used to illustrating expanding material composition of the invention and is prepared from the preparation method of suspended prop and from suspended prop by expanding material composition.
The expanding material composition of the present embodiment is the polyethylene glycol (weight average molecular weight 200) of 100 weight portions and the Arabic gum (Tai'an your kind effort Jiao Ye Co., Ltds, DL-80) of 3 weight portions.
(1) with quartz sand (particle diameter is 6-10 mesh) as raw material, after drying 5h through scouring, 120 DEG C, the quartz sand for screening 6-40 mesh is aggregate；
(2) quartz sand of 100 weight portions screening is taken, 240 DEG C are heated to, adds the weight portions of epoxy resin E-51 (618) 2.5, the weight portion of curing agent phthalic anhydride 0.02 to be uniformly mixed the granular aggregates for obtaining binding agent cladding；
(3) when the temperature of the granular aggregates of above-mentioned binding agent cladding is down to 190 DEG C, the above-mentioned expanding material composition of 2.5 weight portions is added, is uniformly mixed.
(4) cool down, broken, screening, the present embodiment for obtaining from suspended prop.
Embodiment 2
The present embodiment is used to illustrating expanding material composition of the invention and is prepared from the preparation method of suspended prop and from suspended prop by expanding material composition.
The expanding material composition of the present embodiment is the polyethylene glycol (weight average molecular weight 8000) of 100 weight portions and the locust bean gum (Jining Hua Kai resin Co., Ltd) of 24 weight portions.
(1) 100 weight portion haydites are taken (particle diameter is 100-200 mesh), it is heated to 190 DEG C, 18 parts by weight binder bisphenol A-type unsaturated polyester (UP)s 3301 are added, the weight portion of curing agent phthalic anhydride 1.8 is added, the granular aggregates for obtaining binding agent cladding are uniformly mixed；
(2) when the temperature of the granular aggregates of above-mentioned binding agent cladding is down to 100 DEG C, the above-mentioned expanding material composition of 18 weight portions is added, is uniformly mixed.
(3) cool down, broken, screening, the present embodiment for obtaining from suspended prop.
Embodiment 3
The present embodiment is used to illustrating expanding material composition of the invention and is prepared from the preparation method of suspended prop and from suspended prop by expanding material composition.
The expanding material composition of the present embodiment is the polyethylene glycol (weight average molecular weight 400) of 100 weight portions and the soybean separation protein white powder (purchased from Zhengzhou dragon biochemistry chemical product Co., Ltd, decentralized) of 5 weight portions.
(1) 100 weight portion globular glass particles are taken (particle diameter is 10-50 mesh), 210 DEG C are heated to, 16 parts by weight binder epoxy resin E-44s, stirring are added, the weight portion of curing agent diethylenetriamine 1.5 is added, the granular aggregates for obtaining binding agent cladding are uniformly mixed；
(2) when the temperature of the granular aggregates of above-mentioned binding agent cladding is down to 150 DEG C, the above-mentioned expanding material composition of 15 weight portions is added, is uniformly mixed.
(3) cool down, broken, screening, the present embodiment for obtaining from suspended prop.
Embodiment 4
The present embodiment is used to illustrating expanding material composition of the invention and is prepared from the preparation method of suspended prop and from suspended prop by expanding material composition.
The expanding material composition of the present embodiment is the polyethylene glycol (weight average molecular weight 600) of 100 weight portions and the gelatine (purchased from Jinan Hong Ju Chemical Co., Ltd.s) of 10 weight portions.
(1) 100 weight portion sintered aluminas are taken (particle diameter is 10-50 mesh), it is heated to 150 DEG C, 12.5 parts by weight binder thermoplastic phenolic resins are added, the weight portion of curing agent phthalic anhydride 0.65 is added, the granular aggregates for obtaining binding agent cladding are uniformly mixed；
(2) when the temperature of the granular aggregates of above-mentioned binding agent cladding is down to 110 DEG C, the above-mentioned expanding material composition of 15 weight portions is added, is uniformly mixed.
(3) cool down, broken, screening, the present embodiment for obtaining from suspended prop.
Embodiment 5
The present embodiment is used to illustrating expanding material composition of the invention and is prepared from the preparation method of suspended prop and from suspended prop by expanding material composition.
The expanding material composition of the present embodiment is the gelatin (purchased from Jinan Hong Ju Chemical Co., Ltd.s) of the polyethylene glycol (weight average molecular weight 1000) of 100 weight portions and the Arabic gum (Tai'an your kind effort Jiao Ye Co., Ltds, DL-80) of 10 weight portions and 3 weight portions.
(1) 100 weight portion sintered zirconias (particle diameter is 10-100 mesh) are taken, 160 DEG C are heated to, 12 parts by weight binder polyimides are added, the weight portion of curing agent triethylamine 1.3 is added, the granular aggregates for obtaining binding agent cladding are uniformly mixed；
(2) when the temperature of the granular aggregates of above-mentioned binding agent cladding is down to 125 DEG C, the above-mentioned expanding material composition of 6 weight portions is added, is uniformly mixed.
(3) cool down, broken, screening, the present embodiment for obtaining from suspended prop.
Embodiment 6
The present embodiment is used to illustrating expanding material composition of the invention and is prepared from the preparation method of suspended prop and from suspended prop by expanding material composition.
The expanding material composition of the present embodiment is the polyethylene glycol (weight average molecular weight 4000) of 100 weight portions and the Arabic gum (Tai'an your kind effort Jiao Ye Co., Ltds, DL-80) of 22 weight portions.
(1) take the pre- laminated quartz sand of 100 weight portions and (create scientific and technological group purchased from benevolence, trade mark ZFS-KND, particle diameter is 10-50 mesh), it is heated to 230 DEG C, add 17 parts by weight of xylene unsaturated polyester resin Xm-2, the weight portion of curing agent methyl ethyl ketone peroxide 1.2 is added, the granular aggregates for obtaining binding agent cladding are uniformly mixed；
(2) when the temperature of the granular aggregates of above-mentioned binding agent cladding is down to 165 DEG C, the above-mentioned expanding material composition of 16 weight portions is added, is uniformly mixed.
(3) cool down, broken, screening, the present embodiment for obtaining from suspended prop.
Embodiment 7
The present embodiment is used to illustrating expanding material composition of the invention and is prepared from the preparation method of suspended prop and from suspended prop by expanding material composition.
Prepared from suspended prop using expanding material composition same as Example 1 and preparation method, except that, the weight average molecular weight of polyethylene glycol is 100.
Embodiment 8
The present embodiment is used to illustrating expanding material composition of the invention and is prepared from the preparation method of suspended prop and from suspended prop by expanding material composition.
Prepared from suspended prop using expanding material composition same as Example 1 and preparation method, except that, the particle diameter of quartz sand is 300 mesh.
Comparative example 1
This comparative example is used to illustrating different from suspended prop and preparation method with of the invention.
This comparative example from suspended prop be the quartz sand (20-40 mesh) that does not do any treatment.
Comparative example 2
(1) with quartz sand (particle diameter is 6-10 mesh) as raw material, after drying 5h through scouring, 120 DEG C, the quartz sand for screening 6-40 mesh is aggregate；
(2) take the quartz sand of 100 weight portions screening, be heated to 240 DEG C, add the weight portions of epoxy resin E-51 (618) 2.5, add the weight portion of curing agent phthalic anhydride 0.02, be uniformly mixed obtain this comparative example from suspended prop.
Comparative example 3
Prepared from suspended prop using expanding material composition same as Example 1 and preparation method, except that, it is added without Arabic gum in expanding material composition.
Comparative example 4
Prepared from suspended prop using expanding material composition same as Example 1 and preparation method, except that, it is added without polyethylene glycol in expanding material composition.
Comparative example 5
Prepared from suspended prop using expanding material composition same as Example 1 and preparation method, except that, polyethylene glycol is replaced with etc. the PPOX (purchased from Jiangsu Hai'an Petrochemical Plant, PPG8000) of weight
Testing example 1
The preparation of active water：The PAMA (3,000,000) of 0.25g is dissolved in the water of 488.65g, is well mixed, obtain viscous water；The OP-10 of 1g is dissolved in the viscous water of acquisition, is well mixed；10g potassium chloride is added, is stirred；0.1g formaldehyde is added, is stirred.
Test method：Embodiment 1-8, comparative example 1-5 from suspended prop are carried out into liquid viscosity, solid-carrying performance and frictional resistance parameter testing in active water respectively, viscosity determining procedure is referring to standard (SYT5107-2005)；Sinking speed is determined and uses 0.5m lucite tubes, loads 45cm active waters high and sand than the proppant for 30%, shakes up the sinking speed of test proppant；Frictional resistance use DV-III viscosimeters, configuration 30% sand than pressure break system, rotating speed is 100rpm, determines their moment of torsion to characterize the frictional resistance of proppant.Test result is as shown in table 1 below：
Table 1
What data can be seen that prepared by expanding material composition of the invention from table 1 possesses excellent prop-carrying capacity and drop frictional resistance ability from suspended prop in active water.Expanding material composition of the invention is coated on proppant body surface, expanding material composition can be with Fast-swelling in water, firm hydrated sheath is formed in proppant particles outer surface, reduce the relative density from suspended proppant particles, a small amount of organic molecule in expanding material composition can be stretched in water, increase the viscosity of water, this is also beneficial to the suspension in water from suspended proppant particles.Without additionally adding macromolecular compound in fracturing fluid, reduce the viscosity of fracturing fluid, reduce the conveying difficulty of fracturing fluid, it is to avoid macromolecular compound enters underground with fracturing fluid, oil-gas mining hole is blocked, pollution of the macromolecular compound to ground environment is decreased.
Be can be seen that with the Data Comparison of comparative example 1-2 from embodiment 1, expanding material composition of the invention prepare from suspended prop compared with the proppant particles do not made the proppant aggregate of any cladding and only coated binding agent, its sinking speed and frictional resistance are lower, the viscosity of the active water for obtaining is also smaller, and illustrate expanding material composition preparation of the invention possesses more excellent prop-carrying capacity and drop frictional resistance ability from suspended prop.
Be can be seen that with the Data Comparison of comparative example 3-4 from embodiment 1, natural macromolecular material Arabic gum is used alone relative to being used alone in comparative example 3 in polyethylene glycol and comparative example 4, be applied in combination with more preferable effect for polyethylene glycol and natural macromolecular material by expanding material composition of the invention.Embodiment 1 be can be seen that with the Data Comparison of comparative example 5 and coat proppant particles relative to using other polymers, and the proppant particles coated using expanding material composition of the invention are had preferably from suspending power and drop frictional resistance ability.
Be can be seen that with the Data Comparison of embodiment 7-8 from embodiment 1, currently preferred polyethylene glycol weight average molecular weight for the aggregate of 200-8000 and proppant particle diameter for 6-200 purposes in the case of, the prop-carrying capacity from suspended prop and drop frictional resistance ability prepared by expanding material composition of the invention are more prominent.
Testing example 2
The proppant of embodiment 1-8, comparative example 1-5 is carried out into liquid viscosity, solid-carrying performance and frictional resistance parameter testing in clear water respectively, viscosity determining procedure is referring to standard (SYT5107-2005)；Sinking speed is determined and uses 0.5m lucite tubes, loads 45cm active waters high and sand than the proppant for 30%, shakes up the sinking speed of test proppant；Frictional resistance uses DV-III viscosimeters, 30% sand of configuration than pressure break system, fixed rotating speed and rotor determine their moment of torsion to characterize.Test result is as shown in table 2：
Table 2
What data can be seen that prepared by expanding material composition of the invention from table 2 possesses excellent prop-carrying capacity and drop frictional resistance ability from suspended prop in riverfrac treatment system.
The preferred embodiment of the present invention described in detail above; but, the present invention is not limited to the detail in above-mentioned implementation method, in range of the technology design of the invention; various simple variants can be carried out to technical scheme, these simple variants belong to protection scope of the present invention.
It is further to note that each particular technique feature described in above-mentioned specific embodiment, in the case of reconcilable, can be combined by any suitable means.In order to avoid unnecessary repetition, the present invention is no longer separately illustrated to various possible combinations.
Additionally, can also be combined between a variety of implementation methods of the invention, as long as it is without prejudice to thought of the invention, it should equally be considered as content disclosed in this invention.
Claims (14)
1. a kind of expanding material composition containing polyethylene glycol, it is characterised in that the expanding material is combined
Thing contains polyethylene glycol and natural macromolecular material, wherein, relative to the polyethylene glycol of 100 weight portions,
The content of the natural macromolecular material is 3-24 weight portions, and the natural macromolecular material is plant
Glue family macromolecule material and/or animal glue family macromolecule material.
2. composition according to claim 1, it is characterised in that the weight of the polyethylene glycol is equal
Molecular weight is 200-8000.
3. composition according to claim 1, it is characterised in that the natural plant gum class high score
Sub- material is selected from one or more in Arabic gum, tragacanth, locust bean gum and rubber made from soybean cake；It is described dynamic
Thing glue family macromolecule material is selected from one or more in gelatine, gelatin and casein.
4. one kind is from suspended prop, it is characterised in that should include proppant body from suspended prop
And cladding or part are coated on the water-soluble intumescent material on the proppant body, the water solubility is swollen
Swollen material layer makes the expanding material group in claim 1-3 described in any one by binding agent and curing agent
Compound bonds and coats or be partly coated on the proppant body, relative to the support of 100 weight portions
Agent body, the consumption of the binding agent is 2.5-18 weight portions, and the consumption of the curing agent is 0.02-1.8
Weight portion, the consumption of the expanding material composition is 2.5-18 weight portions.
5. it is according to claim 4 from suspended prop, it is characterised in that the proppant sheet
Body is aggregate and/or pre-coated membrane bone material.
6. according to claim 5 from suspended prop, wherein, the aggregate is selected from quartz
Sand, haydite, metallic particles, globular glass particle, sintered bauxite, sintered alumina, sintering oxidation
One or more in the shell particle of zirconium, synthetic resin and crushing.
7. according to claim 5 from suspended prop, wherein, the pre-coated membrane bone material includes
Aggregate and cladding or part described in claim 6 are coated on the pre- film covered resin layer of aggregate surface.
8. according to claim 7 from suspended prop, wherein, the pre- film covered resin layer contains
Have one kind in phenolic resin, epoxy resin, furane resins, polyester resin and unsaturated polyester resin or
It is several.
9. according to claim 4 or 5 from suspended prop, it is characterised in that the support
The particle diameter of agent body is 6-200 mesh.
10. it is according to claim 4 from suspended prop, it is characterised in that the bonding agent is
Selected from the one kind in phenolic resin, epoxy resin, unsaturated polyester resin and heterocyclic polymer bonding agent or
It is several；The curing agent is aliphatic amine and its addition product, tertiary amine and its salt, aromatic amine and its is modified
Body, imidazoles, acid anhydrides, acyl peroxide, lipid peroxidation, paraformaldehyde, hexamethylenetetramine, phenolic aldehyde amine,
One or more in diethylenetriamine and triethylene tetramine.
The preparation method from suspended prop described in 11. claims 4, it is characterised in that the method
Comprise the following steps：
(1) by proppant body and binding agent and curing agent, dispersion mixing is uniform at the first temperature, obtains
To the granular aggregates for being stained with binding agent and/or curing agent, relative to the proppant sheet of 100 weight portions
Body, the consumption of the binding agent is 2.5-18 weight portions, and the consumption of the curing agent is 0.02-1.8 weight
Part；
(2) dispersion mixing is uniform at the second temperature to make the granular aggregates and expanding material composition
So that the expanding material composition is coated in the granular aggregates, obtain granular from the branch that suspends
Support agent, wherein, relative to the proppant body of 100 weight portions, the consumption of the expanding material composition
It is 2.5-18 weight portions.
12. preparation methods according to claim 11, it is characterised in that first temperature is
150-240℃；The second temperature is 100-190 DEG C.
In 13. claim 4-10 described in any one from suspended prop in terms of fluid ore deposit exploitation
Application.
14. applications according to claim 13, it is characterised in that the fluid ore deposit is selected from stone
One or more in oil, natural gas, shale oil and shale gas.
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| CN201511021313.6A CN106928976A (en) | 2015-12-30 | 2015-12-30 | Expanding material composition containing polyethylene glycol and from suspended prop and its application and preparation method |
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