WO2015144091A1 - 一种自悬浮支撑剂及其制备和应用 - Google Patents
一种自悬浮支撑剂及其制备和应用 Download PDFInfo
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- WO2015144091A1 WO2015144091A1 PCT/CN2015/075289 CN2015075289W WO2015144091A1 WO 2015144091 A1 WO2015144091 A1 WO 2015144091A1 CN 2015075289 W CN2015075289 W CN 2015075289W WO 2015144091 A1 WO2015144091 A1 WO 2015144091A1
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- 239000009096 changqing Substances 0.000 description 1
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- 239000008187 granular material Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
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- 235000010420 locust bean gum Nutrition 0.000 description 1
- 239000000711 locust bean gum Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002343 natural gas well Substances 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 238000005502 peroxidation Methods 0.000 description 1
- 229920005596 polymer binder Polymers 0.000 description 1
- 239000002491 polymer binding agent Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
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- 238000012552 review Methods 0.000 description 1
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- 239000011043 treated quartz Substances 0.000 description 1
- 238000013022 venting Methods 0.000 description 1
Images
Classifications
-
- 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
-
- 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
- C09K8/62—Compositions for forming crevices or fractures
- C09K8/66—Compositions based on water or polar solvents
-
- 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
- C09K8/84—Compositions based on water or polar solvents
- C09K8/86—Compositions based on water or polar solvents containing organic compounds
- C09K8/88—Compositions based on water or polar solvents containing organic compounds macromolecular compounds
-
- 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
- C09K8/84—Compositions based on water or polar solvents
- C09K8/86—Compositions based on water or polar solvents containing organic compounds
- C09K8/88—Compositions based on water or polar solvents containing organic compounds macromolecular compounds
- C09K8/90—Compositions based on water or polar solvents containing organic compounds macromolecular compounds of natural origin, e.g. polysaccharides, cellulose
-
- 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
- C09K8/92—Compositions for stimulating production by acting on the underground formation characterised by their form or by the form of their components, e.g. encapsulated material
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK 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
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK 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
-
- 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
- C09K2208/00—Aspects relating to compositions of drilling or well treatment fluids
- C09K2208/04—Hulls, shells or bark containing well drilling or treatment fluids
Definitions
- the invention belongs to the field of fluid mineral exploitation such as petroleum, natural gas and shale gas, and particularly relates to a proppant for strengthening cracks through support and a preparation method thereof.
- drag reducing water can pump large amounts of water and a small amount of proppant at high displacements, carrying proppants into deeper fracture networks, resulting in larger fracture networks and venting areas, which have now become fracturing operations.
- Standard practice Among the components of drag reducing water, clear water accounts for the majority (99.5%), so it is also known as clear water fracturing (Zhao Jie et al., Shale gas horizontal well completion fracturing technology review, natural gas and petroleum, February 2012).
- the existing support fracturing technology mainly includes the use of proppant and fracturing fluid (active water, linear glue or jelly).
- the fracturing fluid and proppant are two independent systems, and the fracturing fluid flows at high speed.
- the turbulent suspension proppant is utilized, however, when the proppant reaches the crack, the proppant settles rapidly at the bottom of the crack due to the large drop in fluid flow rate (patent CN102159797A).
- the polymer compound used in the drag reducing water enters the formation along with the clean water, and the viscosity of the drag reducing water increases. When returning to the row, it consumes a large pump power and is not conducive to all the return flow; some remain high in the ground.
- the molecular compound blocks the pores of the formation, resulting in a decrease in oil output.
- Another object of the present invention is to provide a process for the preparation of the self-suspending proppant.
- a third object of the invention is to propose the use of the self-suspending proppant.
- a self-suspending proppant which is coated on a granular aggregate or partially coated with a water-soluble polymer material
- the aggregate is a solid particle having sufficient mechanical strength to withstand crack closure stress, and is selected from the group consisting of quartz sand, ceramsite, metal particles, spherical glass particles, sintered bauxite, sintered alumina, sintered zirconia, synthetic resin, and coating.
- One or more of the film sand and the crushed nut shell particles; the metal particles are made of one or more of carbon steel, stainless steel, aluminum alloy, iron-nickel alloy, iron-manganese alloy;
- the water-soluble polymer material is selected from the group consisting of a natural polymer, a synthetic polymer or a semi-natural semi-synthetic polymer material, and the water-soluble polymer is used in an amount of 0.1 to 15% by weight based on the amount of the aggregate.
- the aggregate has a size of 6-200 mesh.
- the water-soluble polymer material according to the present invention is an organic material which rapidly swells or dissolves in contact with water, and is selected from a natural polymer material, a synthetic polymer material or a semi-natural semi-synthetic polymer material;
- the synthetic polymer material comprises a condensation type and a polymer type polymer material; wherein the condensation type polymer material is selected from one or more of a polyamine resin, an amino resin and a polyurethane resin; One or more of polyacrylamide, polyacrylic acid, polyethylene glycol, polyethylene oxide, polymaleic anhydride, polyquaternium;
- the semi-natural semi-synthetic synthetic polymer material comprises modified starch, modified cellulose and modified vegetable gum, and is specifically selected from the group consisting of starch derivatives, carboxymethyl starch, hydroxymethyl cellulose, methyl cellulose, Ethyl cellulose, hydroxyethyl cellulose, carboxyethyl starch, starch acetate, One or more of hydroxymethyl guar, hydroxypropyl guar, carboxymethyl hydroxypropyl guar.
- the granular aggregate is preferably further coated with a binder, and the binder includes all materials having an attachment function, including a natural binder and a synthetic binder, the natural binder including Animal glue, vegetable glue and mineral glue; the animal glue is selected from one or more of skin glue, bone glue, shellac, casein glue, albumin glue and fish gelatin; the vegetable gum is selected from starch and paste.
- a natural binder and a synthetic binder including Animal glue, vegetable glue and mineral glue
- the animal glue is selected from one or more of skin glue, bone glue, shellac, casein glue, albumin glue and fish gelatin
- the vegetable gum is selected from starch and paste.
- the mineral glue is selected from one or more of mineral wax and asphalt
- the synthetic binder is selected from the group consisting of phenolic resin and epoxy
- a resin, an unsaturated polyester resin, and a heterocyclic polymer binder is used in an amount of 0.5 to 15% by weight of the aggregate.
- the phenolic resin is a thermoplastic phenolic resin and/or a thermosetting phenolic resin
- the epoxy resin is selected from one or more of epoxy resins E-42, E-35, E-20 (601), E-14, E-12, E-06, E-03; or
- the epoxy resin uses an epoxy resin having an epoxy equivalent of 0.09-0.14 mol/100 g; preferably a bisphenol A epoxy resin, an 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) One or more;
- the unsaturated polyester resin is an o-benzene type unsaturated polyester resin, an isophthalic type unsaturated polyester resin, a xylene type unsaturated polyester resin, a bisphenol A type unsaturated polyester resin, a halogenated unsaturated One or more of a polyester resin and a vinyl ester resin; preferably an ortho-phenyl unsaturated polyester resin of the type 191 or 196, an isophthalic unsaturated polyester resin of the type 199, and a resin model number of 2608, One or more of 902A3, Xm-1, Xm-2 xylene type unsaturated polyester resin; one selected from the group consisting of bisphenol A type unsaturated polyester resins of the type 197, 3301, 323 or A plurality of; the heterocyclic polymeric binder is selected from one or more of the group consisting of polyimide, polybenzimidazole, polyphenylene sulfide, and polydiphenyl ether.
- the preparation method comprises the steps of: raising the aggregate to 170-200 ° C, and then cooling the aggregate to 80-150 ° C to disperse the water-soluble polymer material in the aggregate.
- the binder is dispersed in the aggregate, the water-soluble polymer material is added, and the curing agent is added;
- the curing agent is an aliphatic amine and an adduct thereof, a tertiary amine and a salt thereof, an aromatic amine and a modified body thereof, an imidazole, an acid anhydride, a peroxide, a peroxylipid, a paraformaldehyde, a phenalkamine, One of diethylenetriamine, triethylenetetramine, and hexamethylenetetramine; the curing agent is 0.5-10% by weight of the binder.
- the above preparation method of the self-suspending proppant comprises the following steps:
- step 2) When the temperature of the mixture obtained in the step 1) is lowered to 150 ° C or lower, 0.1 to 5 wt% of the water-soluble polymer material by weight of the aggregate is added and stirred.
- step 2) the step of cooling and sieving is further included.
- the construction method of the present invention is specifically as follows: firstly, one of the jelly, the linear glue, the slick water or the natural water is used as the pre-liquid, and the high-pressure pump truck is used to pump the pre-liquid and fracturing the target reservoir to form the initial geology. crack. Then, natural water is continuously added as a sand-carrying liquid in the sand mixer tank, and a suspension of natural water and a proppant is formed while adding a self-suspending proppant; the suspension is continuously pumped into the initial stage by using a high-pressure pump truck. In the formation of geological cracks, the initial geological cracks are continuously extended to form geological cracks supported by the proppant.
- the rock formation is one of a rock formation, a shale formation, a salt rock formation and a sedimentary rock formation of a heavy oil reservoir.
- Figure 1 is a schematic flow diagram of oil production using the sub-suspended proppant of the present invention.
- Step 2) The temperature of the mixture was lowered to 140 ° C, and 8 g of carboxymethylcellulose was added. Stir well. After cooling, it is crushed and sieved.
- the proppant obtained after sieving is particles having a particle size of 20-40 mesh, and the aggregate surface is coated or partially coated with a carboxymethyl cellulose polymer material.
- Step 2) The temperature of the mixture was lowered to 140 ° C, and 8 g of carboxymethylcellulose was added. Stir well.
- the obtained proppant is particles having a particle size of 20-40 mesh, and the aggregate surface is coated or partially coated with a carboxymethyl cellulose polymer material.
- the obtained proppant is particles having a particle size of 40-70 mesh, and the aggregate surface is coated or partially coated with a polycaprolactone polymer material.
- Epoxy resin E-55 was mixed with ethyl acetate in a ratio of 1:1. Stir well, prepare 50 mL of binder solution, and then add aggregate and 10 g of tannin to the binder solution.
- Step 2) The resulting mixture was dried at 80 ° C for 2 hours and sieved.
- the proppant obtained in this embodiment is a particle having a particle size of 20-40 mesh, and the aggregate surface is coated or partially coated with a silicone polymer material.
- Epoxy resin E-51 mixed with ethyl formate in a ratio of 1:1. Stir well, prepare 50 mL of the binder solution, and then add the aggregate and 10 g of carboxymethyl tannin to the binder solution.
- Step 2) The obtained mixture is dried at 80 ° C for 4 hours, and sieved to obtain.
- Proppant Coated sand prepared according to the method of Example 2 of Patent CN1640981A.
- the preparation process of the active water is: dissolving the above specific amount of polyacrylamide in 488.65 g of water and mixing uniformly to obtain thickened water; dissolving the above specific amount of OP-10 in the obtained thickened water and mixing uniformly; Add 10 g of potassium chloride and stir well; add 0.1 g of formaldehyde and stir well.
- test results of Examples 13-26 are listed in the following table (test method is the same as above).
- test results show that the self-suspending proppant proposed by the invention has excellent sand-carrying capacity and friction-reducing ability in the active water.
- the proppants prepared in Examples 1-12 of the present application were added to clean water according to a sand ratio (volume ratio of proppant to water) of 10:100, 20:100, and 30:100, and were stirred for more than two hours.
- This experimental example provides a fracturing construction method based on natural water-carrying sand for natural gas wells, including the following steps:
- the natural water used in this example is fresh water in the surface river, and there are no solid particles visually observed.
- the proppant used in this example was a 20/40 mesh self-suspending proppant prepared by the method of Example 7.
- Step 2 Connect the fracturing construction pipeline, test the pressure with the pre-liquid linear glue, and press open the target reservoir.
- Step 3 Under continuous stirring, the clean water pump is pumped into the sand mixing vehicle at a flow rate of 1.96 m 3 /min, and the self-suspending proppant is conveyed into the sand mixing vehicle at a rate of 0.84 m 3 /min, and the mixture is uniformly mixed.
- Step 4 Mix the homogeneous suspension and pump into the target reservoir crack at the same rate as the mixed sand via the fracturing pump.
- the construction process pressure is stable, the whole process is 2.5 hours, and the construction is completed after 1.5 hours of shut-in. After returning to the drain for 3 hours, it was clear and returned to the bottom for 5 hours.
- the initial daily gas production is 700 square meters/d, which is slightly higher than that of the conventional melon rubber linear rubber fracturing.
- the self-suspending proppant provided by the invention is coated on the granular aggregate or partially coated with the water-soluble polymer material;
- the aggregate is a solid particle having sufficient mechanical strength to withstand the crack closure stress,
- the amount of the molecule is from 0.1 to 5% by weight based on the amount of the aggregate.
- the self-suspending proppant proposed by the invention does not need to be fracturing using a fracturing fluid which is added with an organic polymer and is expensive, and directly uses natural water which is available everywhere for fracturing, which reduces pollution and reduces cost.
- the self-suspending proppant proposed by the invention can reduce the friction of the fracturing fluid, so that the fracturing support system of the invention has substantially the same performance as the existing fracturing fluid, is easy to transport, and is easy to return.
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Abstract
Description
Claims (17)
- 一种自悬浮支撑剂,其特征在于,所述自悬浮支撑剂是在颗粒状骨料上包覆、或部分包覆有水溶性高分子材料;所述骨料为具有承受裂缝闭合应力的足够机械强度的固体颗粒,选自石英砂、陶粒、金属颗粒、球状玻璃颗粒、烧结铝土矿、烧结氧化铝、烧结氧化锆、合成树脂、覆膜砂、粉碎的果壳颗粒中的一种或多种;所述金属颗粒的材质为碳钢、不锈钢、铝合金、铁镍合金、铁锰合金中的一种或多种;所述的水溶性高分子材料选自天然高分子、人工合成高分子或半天然半人工合成的高分子材料,所述水溶性高分子的用量为骨料用量的0.1~15wt%。
- 根据权利要求1所述的自悬浮支撑剂,其特征在于,所述骨料的尺寸为6-200目。
- 根据权利要求1所述的自悬浮支撑剂,其特征在于,所述的天然高分子材料选自淀粉、植物胶、动物胶或海藻胶;所述植物胶为***胶、黄耆胶、槐豆胶、胍胶、田菁胶、大豆胶中的一种或多种;所述的动物胶为骨胶、明胶、干酪素、壳聚糖中的一种或多种;所述的海藻胶为藻蛋白酸钠、海藻酸钠、琼胶中的一种或多种;所述的水溶性高分子材料为遇水快速溶胀或溶解的有机材料,选自天然高分子材料、人工合成的高分子材料或半天然半人工合成的高分子材料;所述人工合成的高分子材料包括缩合类和聚合类高分子材料;其中,缩合类高分子材料选自聚胺树脂、氨基树脂和聚氨酯树脂中的一种或多种;聚合类高分子材料选自聚丙烯酰胺、聚丙烯酸、聚乙二醇、聚氧化乙烯、聚马来酸酐、聚季铵盐中的一种或多种;所述的半天然半人工合成的高分子材料包括改性淀粉、改性纤维素和改性植物胶,具体选自淀粉衍生物、羧甲基淀粉、羟甲基纤维素、甲基纤维素、乙基纤维素、羟乙基纤维素、羧乙基淀粉、醋酸淀粉、羟甲基瓜尔胶、 羟丙基瓜尔胶、羧甲基羟丙基瓜尔胶中的一种或多种。
- 根据权利要求1所述的自悬浮支撑剂,其特征在于,所述颗粒状骨料上还包覆有粘结剂,所述粘结剂包括所有具有附着功能的材料,包括天然粘结剂和合成粘结剂,所述天然粘结剂包括动物胶、植物胶和矿物胶;所述动物胶选自皮胶、骨胶、虫胶、酪素胶、白蛋白胶、鱼鳔胶中的一种或多种;所述植物胶选自淀粉、糊精、松脂、桐油、***树胶、天然橡胶中的一种或多种;所述矿物胶选自矿物蜡、沥青中的一种或多种;所述合成粘结剂选自酚醛树脂、环氧树脂、不饱和聚酯树脂、杂环高分子粘结剂中的一种或多种,粘结剂的用量为骨料用量0.5-15wt%。
- 根据权利要求3所述的自悬浮支撑剂,其特征在于,所述酚醛树脂为热塑性酚醛树脂和/或热固性酚醛树脂;所述的环氧树脂选自环氧树脂E-42、E-35、E-20(601)、E-14、E-12、E-06、E-03、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)中的一种或多种;所述的不饱和聚酯树脂为邻苯型不饱和聚酯树脂、间苯型不饱和聚酯树脂、二甲苯型不饱和聚酯树脂、双酚A型不饱和聚酯树脂、卤代不饱和聚酯树脂、乙烯基酯树脂中的一种或多种;优选型号为191或196的邻苯型不饱和聚酯树脂、型号为199的间苯型不饱和聚酯树脂、树脂型号为2608、902A3、Xm-1、Xm-2的二甲苯型不饱和聚酯树脂中的一种或多种;选自型号为197、3301、323的双酚A型不饱和聚酯树脂中的一种或多种;所述杂环高分子粘结剂选自聚酰亚胺、聚苯并咪唑、聚苯硫醚、聚二苯醚中的一种或多种。
- 权利要求1-5任一所述的自悬浮支撑剂的制备方法,其特征在于,是将水溶性高分子材料分散于骨料中制得。
- 根据权利要求6所述的自悬浮支撑剂的制备方法,其特征在于, 是在15-150℃条件下,将水溶性高分子材料分散于骨料中制得;所述的水溶性高分子材料选自植物胶、动物胶或微生物胶中的一种,所述水溶性高分子的用量为骨料用量的0.5-15wt%。
- 根据权利要求7所述的自悬浮支撑剂的制备方法,其特征在于,是将骨料先升温至170-200℃,然后待骨料降温至80-150℃,将水溶性高分子材料分散于骨料中。
- 根据权利要求6所述的自悬浮支撑剂的制备方法,其特征在于,以6-200目的颗粒为骨料,向骨料中加入粘结剂溶液并搅拌,所述粘结剂溶液占骨料重量10-30%,再加入占骨料重量0.1~5%的水溶性高分子材料并搅拌,所述粘结剂溶液的溶剂为有机溶剂,所述有机溶剂选自丙酮、乙酸乙酯、乙酸甲酯氯仿,二甲基甲酰胺、四氢呋喃、乙醇中的一种或多种。
- 根据权利要求6所述的自悬浮支撑剂的制备方法,其特征在于,是将粘结剂分散于骨料中,加入固化剂,再加入水溶性高分子材料而得;或,是将粘结剂分散于骨料中,加入水溶性高分子材料,再加入固化剂而得;其中,所述固化剂为脂肪族胺及其加成物、叔胺及其盐、芳香族胺及其改性体、咪唑、酸酐、过氧化酰、过氧化脂、多聚甲醛、酚醛胺、二乙烯三胺、三乙烯四胺、六次甲基四胺中的一种;固化剂为粘结剂重量的0.5-10%。
- 根据权利要求7所述的自悬浮支撑剂的制备方法,其特征在于,包括步骤:1)以石英砂、陶粒、金属颗粒、球状玻璃颗粒、烧结铝土矿、烧结氧化铝、烧结氧化锆、合成树脂、覆膜砂、粉碎的果壳颗粒中的一种或多种为骨料;加热至50-300℃,降温至240℃以下,加入重量为骨料重量 0.5~15wt%的粘结剂并搅拌;2)当步骤1)所得混合物温度降至150℃以下时,加入骨料重量的0.1~5wt%的水溶性高分子材料,并搅拌。
- 根据权利要求11所述的自悬浮支撑剂的制备方法,其特征在于,在步骤1)或步骤2)中加入固化剂。
- 根据权利要求6所述的制备方法,其特征在于,包括步骤:1)以石英砂、陶粒、覆膜砂、金属颗粒、球状玻璃颗粒、烧结铝土矿、烧结氧化铝、烧结氧化锆、合成树脂、粉碎的果壳颗粒中的一种或多种为骨料,加入重量为骨料重量0.5~15wt%的粘结剂并搅拌;2)加入骨料重量的0.1~5wt%的水溶性高分子材料,再加入固化剂,并搅拌。
- 根据权利要求11或13所述的制备方法,其特征在于,所述步骤2)之后还包括冷却和筛分的步骤。
- 一种天然水压裂施工方法,其特征在于,是向作为携砂液的体积份100份天然水中添加5-60体积份权利要求1-5任一所述的自悬浮支撑剂,形成水力压裂悬浮液,然后将所得悬浮液输送到地下岩层中;所述作为携砂液的天然水选自河水、养殖用水、湖水、海水及地下水中的一种或多种。
- 根据权利要求15所述的天然水压裂施工方法,其特征在于,首先以冻胶、线性胶、滑溜水或者天然水中的一种作为前置液,利用高压泵车泵入前置液并压裂目标储层,形成初期的地质裂缝。
- 根据权利要求15所述的天然水压裂施工方法,其特征在于,所述岩层是稠油油藏的岩层、页岩层、盐岩层、沉积岩层中的一种。
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CA2948953A CA2948953A1 (en) | 2014-03-28 | 2015-03-27 | Self-suspending proppant and preparation and use thereof |
RU2016142542A RU2652592C1 (ru) | 2014-03-28 | 2015-03-27 | Самосуспендирующийся проппант, его приготовление и использование |
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CN201410124452.0 | 2014-03-28 | ||
CN201410123724.5A CN104946233B (zh) | 2014-03-28 | 2014-03-28 | 一种用于天然水压裂的自悬浮支撑剂 |
CN201410124452.0A CN104946235A (zh) | 2014-03-28 | 2014-03-28 | 自悬浮支撑剂的制备方法及制备得到的支撑剂 |
CN201410123922.1A CN104944840A (zh) | 2014-03-28 | 2014-03-28 | 用于天然水压裂施工的自悬浮支撑剂的制备方法 |
CN201410124182.3A CN104946234A (zh) | 2014-03-28 | 2014-03-28 | 一种自悬浮支撑剂及其制备方法 |
CN201410123922.1 | 2014-03-28 | ||
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CN201410124182.3 | 2014-03-28 | ||
CN201410123908.1A CN104948158A (zh) | 2014-03-28 | 2014-03-28 | 水力压裂的油气田开采方法 |
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CN201410124455.4A CN104948159A (zh) | 2014-03-28 | 2014-03-28 | 一种天然水压裂施工方法 |
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US10435624B2 (en) | 2014-03-28 | 2019-10-08 | Arr-Maz Products, L.P. | Attrition resistant proppant composite and its composition matters |
US10508231B2 (en) | 2014-03-28 | 2019-12-17 | Arr-Maz Products, L.P. | Attrition resistant proppant composite and its composition matters |
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US11274243B2 (en) | 2018-06-08 | 2022-03-15 | Sunita Hydrocolloids Inc. | Friction reducers, fracturing fluid compositions and uses thereof |
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