WO2015089885A1 - Seawater-based quick-dissolving fracturing liquid and preparation method therefor - Google Patents

Seawater-based quick-dissolving fracturing liquid and preparation method therefor Download PDF

Info

Publication number
WO2015089885A1
WO2015089885A1 PCT/CN2014/000064 CN2014000064W WO2015089885A1 WO 2015089885 A1 WO2015089885 A1 WO 2015089885A1 CN 2014000064 W CN2014000064 W CN 2014000064W WO 2015089885 A1 WO2015089885 A1 WO 2015089885A1
Authority
WO
WIPO (PCT)
Prior art keywords
parts
seawater
cross
water
fracturing fluid
Prior art date
Application number
PCT/CN2014/000064
Other languages
French (fr)
Chinese (zh)
Inventor
孙虎
王祖文
张冕
廖乐军
郭伟林
陈亚联
赵文钢
李婧
高燕
李楠
高红平
魏晓龙
李环向
王科萌
陈飞
马捷
包霞
Original Assignee
中国石油集团川庆钻探工程有限公司长庆井下技术作业公司
孙虎
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司, 孙虎 filed Critical 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司
Publication of WO2015089885A1 publication Critical patent/WO2015089885A1/en

Links

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
    • C09K8/62—Compositions for forming crevices or fractures
    • C09K8/66—Compositions based on water or polar solvents
    • C09K8/68—Compositions based on water or polar solvents containing organic compounds
    • C09K8/685—Compositions based on water or polar solvents containing organic compounds containing cross-linking agents
    • 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
    • C09K8/602—Compositions for stimulating production by acting on the underground formation containing surfactants
    • 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
    • C09K8/602—Compositions for stimulating production by acting on the underground formation containing surfactants
    • C09K8/604—Polymeric surfactants
    • 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
    • C09K8/665—Compositions based on water or polar solvents containing inorganic 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
    • 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
    • C09K8/887—Compositions based on water or polar solvents containing organic compounds macromolecular compounds containing cross-linking agents
    • 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
    • C09K2208/00—Aspects relating to compositions of drilling or well treatment fluids
    • C09K2208/24—Bacteria or enzyme containing gel breakers
    • 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
    • C09K2208/26—Gel breakers other than bacteria or enzymes
    • 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
    • C09K8/52—Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning
    • C09K8/528—Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning inorganic depositions, e.g. sulfates or carbonates

Definitions

  • the invention relates to a seawater-based instant fracturing fluid used in an offshore seawater-based rapid solution fracturing hydraulic crack stimulation process and a preparation method thereof.
  • China is significantly increasing offshore oil exploration, and deepwater oil exploration will be one of the priorities of the future global oil strategy.
  • China's deepwater oil exploration and development is still in its infancy stage, and it has deep-water large-scale equipment, which will enable China's offshore oil fields to have the ability to conduct offshore operations in various deep water fields around the world.
  • domestic offshore fracturing technology has just started, because the old oil and gas fields are facing the stage of low-efficiency development in the later stage, and it is necessary to use fracturing and other technical means to increase production capacity.
  • newly developed oil fields can also use fracturing methods to transform the entire block and expand The production potential of oil and gas reservoirs; at the same time, it can solve the problems of oil well sand production and heavy oil exploitation.
  • the object of the present invention is to provide a seawater-based instant fracturing fluid and a preparation method thereof, and the fracturing fluid of the invention can achieve pretreatment of seawater (mainly large mud sand, floating plastic bags, etc.), and can directly use seawater. get on Continuous mixing and fracturing, all the indexes of the fracturing fluid can meet the technical requirements of offshore fracturing operations, reducing the cost of offshore operations and waste of resources.
  • the technical solution of the present invention is: a seawater-based instant fracturing fluid, characterized in that: the fracturing fluid is 65 ⁇
  • the base liquid is 95.0 ⁇ 99.6 parts water, 0.1 ⁇ 1.0 parts thickener, 0.1 ⁇ 2.0 parts colloidal protective agent, 0.1 ⁇ 1.0 part synergist And 0.1 ⁇ 1.0 parts of demulsifier drainage agent;
  • the cross-linking liquid is composed of 0-99.9 parts water, 0.1-100.0 parts of cross-linking agent and 0.001-0.5 part of gel breaker.
  • the fracturing fluid is composed of 97 parts base liquid and 3 parts cross-linking liquid; the base liquid is 98.1 ⁇ 98.5 parts water, 0.2 ⁇
  • the cross-linking liquid is composed of 49.6 parts water, 50 parts cross-linking agent and 0.4 parts of broken glue Agent.
  • the colloidal protective agent is one or a mixture of an organic phosphine series scale inhibitor or a polycarboxylic acid scale inhibitor dispersant, and ensures that the salinity does not precipitate at 60,000 ppm and 90 °C.
  • the breaker is used in combination of one or a combination of ammonium persulfate, potassium persulfate, hydrogen peroxide, glycanase or other biological enzymes.
  • the thickening agent is a modified thickening agent, and the modified thickening agent is prepared: firstly, etherification is carried out, and the specific method is: the ratio of guar film, water, caustic soda, ethanol and ethylene oxide is 5 according to the mass ratio. :6:0.44: 12: 1.2 ⁇ 3.3 Reaction at 60 ° C ⁇ 80 ° C 31!
  • the demulsification drainage agent is composed of water, fluorocarbon surfactant FC-211, sodium lauryl sulfate SDS, nonylphenol ethoxylate OP-10 according to 300 ⁇ 400: 1:250 ⁇ 300: 3 to 10 ratios are compounded.
  • the preparation method of the seawater-based instant fracturing fluid is as follows:
  • Formulation base solution Add the formula thickener in the continuous mixing car powder tank used in the field.
  • the colloidal protective agent, demulsifier drainage agent and synergist are mixed according to the formula amount and poured into the formula.
  • the mixing truck adjusts the powder speed of the powder tank according to the requirements of the construction, the speed is 6 ⁇ 12kg/min and the suction speed of the water base suction pump is 60L/min, forming a base at the discharge port of the compound truck.
  • Step 3 Preparation of fracturing fluid: Under stirring, mix the base solution of step 1 and the cross-linking liquid of step 2 in a proportion of the formulation to form a highly viscous liquid.
  • This fracturing fluid is suitable for use in oil and gas wells where the well temperature is within 170 °C.
  • the seawater fracturing fluid thickener has a faster swelling ratio: 10 ° C, 0.6% thickener in seawater, the swelling rate of more than 85%, can meet the requirements of continuous compounding construction process;
  • the fracturing fluid formed is more than 60000ppm, and the seawater in Bohai Bay and other areas can be directly mixed continuously, which has good salt resistance;
  • the fracturing fluid of the present invention is suitable for use in oil and gas wells having a well temperature of 170 ° C or less.
  • Figure 1 shows the effect of temperature resistance.
  • a seawater-based instant fracturing fluid consisting of 97 parts base liquid and 3 parts cross-linking liquid; the base liquid is 98.1 parts Water, 0.2 parts thickener, 1.0 part colloidal protectant, 0.2 part synergist and 0.1 part demulsifier drainage agent; the cross-linking liquid is composed of 49.6 parts water, 50 parts cross-linking agent and 0.4 parts Glue breaker.
  • the preparation method of the fracturing fluid is as follows:
  • Formulation base solution Add the formula thickener in the continuous mixing car powder tank used in the field.
  • the colloidal protective agent, demulsifier drainage agent and synergist are mixed according to the formula amount and poured into the formula.
  • the mixing truck adjusts the powder speed of the powder tank according to the requirements of the construction, the speed is 6 ⁇ 12kg/min and the suction speed of the water base suction pump is 60L/min, forming a base at the discharge port of the compound truck.
  • the colloidal protective agent is one or a mixture of an organic phosphine series scale inhibitor or a polycarboxylic acid scale inhibitor dispersing agent, and ensures that the salinity does not precipitate at 60,000 ppm and 90 ° C; Is an organic phosphine series scale inhibitor, specifically ethylenediamine tetramethylene phosphonate EDTMPS;
  • the crosslinking agent refers to a mixture of one or more of triethanolamine borate, ethylene glycol borate, zirconium oxychloride, tetrabutyl zirconate or boron, zirconium organic or inorganic compounds;
  • the example cross-linking agent used was triethanolamine borate.
  • the thickening agent is a modified thickening agent, and the modified thickening agent is prepared: firstly, etherification is carried out by: the ratio of guar film, water, caustic soda, ethanol and ethylene oxide is 5 according to a mass ratio.
  • the demulsification drainage agent is composed of water, fluorocarbon surfactant FC-211, sodium lauryl sulfate SDS, nonylphenol ethoxylate OP-10 according to a mass ratio of 350: 1: 280: 7 It is compounded.
  • Embodiment 2 is basically the same as Embodiment 1, except that:
  • the fracturing fluid consists of 97 parts base liquid and 3 parts cross-linking liquid; the base liquid is 98.5 parts water, 0.6 parts thickener, 1.0 part colloidal protectant, 0.2 part synergist and 0.1 part demulsification
  • the drainage agent is composed;
  • the cross-linking liquid is composed of 49.6 parts of water, 50 parts of a crosslinking agent and 0.4 parts of a breaker.
  • the colloidal protective agent used in this embodiment is an organic phosphine series scale inhibitor, specifically 2-phosphonic acid butane-1, 2, 4-tricarboxylic acid PBTCA; the crosslinking agent used in this embodiment is zirconium oxychloride.
  • the demulsifier of the present embodiment is potassium persulfate; the demulsification drainage agent is composed of water, fluorocarbon surfactant FC-211, sodium lauryl sulfate SDS, nonylphenol polyoxyethylene ether OP -10 is compounded in a mass ratio of 300: 1: 250:3.
  • Embodiment 3 is basically the same as Embodiment 1, and the difference is:
  • the fracturing fluid consists of 97 parts base liquid and 3 parts cross-linking liquid; the base liquid is 98.3 parts water, 0.4 parts thickener, 1.0 part colloidal protectant, 0.2 part synergist and 0.1 parts.
  • the composition of the demulsification drainage agent; the crosslinking liquid is composed of 49.6 parts of water, 50 parts of a crosslinking agent and 0.4 parts of a breaker.
  • the colloidal protective agent used in this embodiment is a polycarboxylic acid scale inhibitor dispersing agent, specifically polyepoxysuccinic acid (sodium) PESA; the crosslinking agent used in this embodiment is tetrabutyl zirconate.
  • the breaker used in this embodiment is ammonium persulfate; the emulsion breaker is composed of water, fluorocarbon surfactant FC-211, sodium lauryl sulfate SDS, nonylphenol ethoxylate OP -10 is compounded in a mass ratio of 400: 1: 300:10.
  • the synergist of this embodiment employs a conventional synergist in the art and will not be described in detail herein.
  • Embodiment 4 is basically the same as Embodiment 1, except that:
  • the colloidal protective agent used in this embodiment is a mixture of an organic phosphine series scale inhibitor and a polycarboxylic acid scale inhibitor dispersant in a mass ratio of 1:1;
  • the crosslinking agent in this embodiment is a triethanolamine borate and an ethylene compound.
  • the alcohol borate ester is a mixture of a mass ratio of 1:1;
  • the gel breaker used in this embodiment is a mixture of hydrogen peroxide and glycanase in a mass ratio of 1:1.
  • Example 5 Adding a thickening agent to the continuous mixing vehicle powder tank on site, and pouring the three water base materials of colloidal protective agent, demulsifier drainage aid and synergist into a 30m 3 pool, thickener and colloid
  • the protective agent, demulsifier drainage aid and synergist are in accordance with the mass ratio of 3:10:1:2; if the on-site construction displacement is 2m 3 /min, the powder speed of the thickener under continuous mixing is 6kg during construction. /min, the water base has a suction displacement of 60 L/min ; a base liquid is formed.
  • cross-linking liquid 100 liters: 2 to 4 liters by volume ratio to form a fracturing fluid.
  • the above fracturing fluid is recommended for use in oil and gas wells where the well temperature does not exceed 100 °C.
  • the synergist is: a low molecular weight high polymer solution containing organic cations and nonionic surfactant groups, the molecular formula is: ClNH 4 CHF(CH 2 ) n OS0 3 H'N (CH 2 CH 2 OH) 3 , where n is 12-18.
  • cross-linking liquid 100 liters: 2 to 4 liters by volume ratio to form a fracturing fluid.
  • the above fracturing fluid is recommended for use in oil and gas wells where the well temperature does not exceed 130 °C.
  • the thickening agent to the continuous mixing car powder tank on site, and pour the three water base materials of colloidal protective agent, demulsifier drainage aid and synergist into the 30m 3 pool, thickener and colloid protectant.
  • the demulsifier drainage agent and synergist are in accordance with the mass ratio of 5:10:1:2; if the on-site construction displacement is 2m 3 /min, the powder speed of the thickener under continuous mixing is 10kg/min during construction.
  • the water base has a suction displacement of 60 L/min ; a base liquid is formed.
  • cross-linking liquid 100 liters: 2 to 4 liters by volume ratio to form a fracturing fluid.
  • the above fracturing fluid is recommended for use in oil and gas wells with a well temperature not exceeding 150 °C.
  • cross-linking liquid 100 liters: 2 to 4 liters by volume ratio to form a fracturing fluid.
  • the seawater-based instant fracturing fluid of the present invention is composed of 65 ⁇ 99.99 parts base liquid and 0.01 ⁇ 35.0 parts cross-linking liquid;
  • the base liquid is 95.0 ⁇ 99.6 parts water, 0.1-1.0 part thickener, 0.1 ⁇ 2.0 parts colloidal protective agent, 0.1 ⁇ 1.0 part synergist and 0.1 ⁇ 1.0 part demulsifier drainage agent;
  • the cross-linking liquid is from 0 ⁇ 99.9 parts water, 0.1 ⁇ 100.0 parts cross-linking agent and 0.001 ⁇ 0.5 parts of gel breaker; values within the range are acceptable.
  • Ethylenediamine tetramethylene phosphonate EDTMPS, 2-phosphonic acid butane-1, 2, 4-tricarboxylic acid in the above examples PBTCA and polyepoxysuccinic acid (sodium) PESA were purchased from Shandong Taihe Water Treatment Co., Ltd.; surfactant FC-211 was purchased from Zhejiang Yinzhou Jiameng Chemical Co., Ltd.; sodium lauryl sulfate SDS was purchased from Hunan Li Chen Aowei Industrial Co., Ltd.; nonylphenol ethoxylate OP-10 was purchased from Tianjin Haoyuan Fine Chemical Co., Ltd. ;*: the test of the bun
  • Example 1 Temperature resistance
  • Fig. 1 The temperature resistance of the formulation and preparation method of Example 1 or Example 5 is shown in Fig. 1.
  • the seawater-based instant solution fracturing fluid prepared by the invention has instant dissolution, salt resistance, high temperature resistance, etc. Performance, can meet the self-priming of the mixed car
  • the model of liquid-side fracturing at seawater reduces the cost and construction risk, promotes large-scale application, reduces the comprehensive cost by more than 30% compared with the conventional model, and innovates the offshore fracturing mode with good economic benefits. Great social benefits and broad application prospects.
  • the effect of using other embodiments for temperature resistance is basically the same.

Abstract

The present invention relates to a seawater-based quick-dissolving fracturing liquid and a preparation method therefor. The fracturing liquid consists of 65 - 99.99 parts of a base liquid and 0.01 - 35.0 parts of a cross-linking liquid, wherein the base liquid consists of 95.0 - 99.6 parts of water, 0.1 - 1.0 part of a thickening agent, 0.1 - 2.0 parts of a colloidal protective agent, 0.1 - 1.0 part of a synergist and 0.1 - 1.0 part of a demulsifying-cleanup agent; and the cross-linking liquid consists of 0 - 99.9 parts of water, 0.1 - 100.0 parts of a cross-linking agent and 0.001 - 0.5 part of a gel breaker. The prepared seawater-based quick-dissolving fracturing liquid has properties of quick dissolution, salinity resistance, high temperature resistance etc., which can meet the requirement of a mode in which a blending truck self-absorbs seawater for fracturing while compounding, thereby reducing the cost and the risk of construction, promoting large-scale applications, reducing the overall cost by not less than 30% of that of a conventional mode, innovating the off-shore fracturing mode, having a good economic benefit and tremendous social benefit, and having a broad application prospect.

Description

一种海水基速溶压裂液及其配制方法  Seawater-based instant fracturing fluid and preparation method thereof
技术领域 Technical field
本发明涉及一种用于海上海水基速溶压裂液压裂增产工艺中所使用的海水基速 溶压裂液及其配制方法。  The invention relates to a seawater-based instant fracturing fluid used in an offshore seawater-based rapid solution fracturing hydraulic crack stimulation process and a preparation method thereof.
背景技术 Background technique
海上压裂技术从上世纪八十年代以来在欧洲北海， 墨西哥湾， 巴西， 东南亚海 域的油气田中广泛应用， 特别是北海油田， 压裂已经成为一种完井、 防砂、 增产的 重要技术手段。  Offshore fracturing technology has been widely used in oil and gas fields in the North Sea, Gulf of Mexico, Brazil, and Southeast Asia since the 1980s. Especially in the North Sea oil field, fracturing has become an important technical means for completion, sand control and production increase.
中国正在大幅增加海洋石油开采， 对深水石油开采将是未来全球石油战略重点 之一。 我国的深水石油勘探开发尚处在起歩阶段， 拥有深水大型装备， 将使中国海 洋油田具备在世界各个深水领域进行海上作业的能力。 但是国内海上压裂技术刚刚 起歩， 因为老油气田面临进入后期低效率开发阶段， 需要用压裂等技术手段来增加 产能； 同时新开发的油田也可以用压裂手段来改造整个区块， 扩大油气藏的生产潜 力； 同时可以解决油井出砂和稠油开采的问题。  China is significantly increasing offshore oil exploration, and deepwater oil exploration will be one of the priorities of the future global oil strategy. China's deepwater oil exploration and development is still in its infancy stage, and it has deep-water large-scale equipment, which will enable China's offshore oil fields to have the ability to conduct offshore operations in various deep water fields around the world. However, domestic offshore fracturing technology has just started, because the old oil and gas fields are facing the stage of low-efficiency development in the later stage, and it is necessary to use fracturing and other technical means to increase production capacity. At the same time, newly developed oil fields can also use fracturing methods to transform the entire block and expand The production potential of oil and gas reservoirs; at the same time, it can solve the problems of oil well sand production and heavy oil exploitation.
由于施工环境的影响， 增加了成本和施工的风险， 限制了大规模的应用。 设备 的运送， 改造拖船； 设备在平台摆放和应用问题， 大型压裂受限制； 海上地层出水 严重， 压裂控制缝高是一个大的挑战。  Due to the impact of the construction environment, the cost and construction risks are increased, which limits the large-scale application. Transportation of equipment, modification of tugboats; equipment placement and application problems, large-scale fracturing is restricted; effluent from offshore formations is severe, and fracturing control seam height is a big challenge.
因此， 高抗盐、 速溶稠化剂型压裂液开发成为海上油田发展的趋势， 同时混砂 车自吸海水边配液边压裂的模式， 大大降低海上压裂施工成本。  Therefore, the development of high-resistance and fast-dissolving thickening type fracturing fluids has become a trend in the development of offshore oilfields. At the same time, the mode of fracturing of the sand-mixing vehicles from the seawater side is greatly reduced, and the cost of offshore fracturing construction is greatly reduced.
发明内容 Summary of the invention
本发明的目的是提供一种海水基速溶压裂液及其配制方法， 本发明的压裂液能 达到对海水进行预处理 （主要是大块泥砂、 漂浮的塑料袋等）， 可直接使用海水进行 连续混配压裂， 所配压裂液各项指标均能达到海上压裂作业技术要求， 减少海上作 业成本和资源浪费。 本发明的技术方案是： 一种海水基速溶压裂液， 其特征在于： 该压裂液由 65〜 The object of the present invention is to provide a seawater-based instant fracturing fluid and a preparation method thereof, and the fracturing fluid of the invention can achieve pretreatment of seawater (mainly large mud sand, floating plastic bags, etc.), and can directly use seawater. get on Continuous mixing and fracturing, all the indexes of the fracturing fluid can meet the technical requirements of offshore fracturing operations, reducing the cost of offshore operations and waste of resources. The technical solution of the present invention is: a seawater-based instant fracturing fluid, characterized in that: the fracturing fluid is 65~
99.99份基液和 0.01〜35.0份交联液组成；所述的基液是由 95.0〜99.6份水、 0.1〜1.0 份稠化剂、 0.1〜2.0份胶体保护剂、 0.1〜1.0份增效剂和 0.1〜1.0份破乳助排剂组成； 所述的交联液是由 0〜99.9份水、 0.1〜100.0份交联剂和 0.001〜0.5份的破胶剂。 99.99 parts base liquid and 0.01~35.0 parts cross-linking liquid; the base liquid is 95.0~99.6 parts water, 0.1~1.0 parts thickener, 0.1~2.0 parts colloidal protective agent, 0.1~1.0 part synergist And 0.1~1.0 parts of demulsifier drainage agent; the cross-linking liquid is composed of 0-99.9 parts water, 0.1-100.0 parts of cross-linking agent and 0.001-0.5 part of gel breaker.
该压裂液由 97份基液和 3份交联液组成；所述的基液是由 98.1〜98.5份水、 0.2〜 The fracturing fluid is composed of 97 parts base liquid and 3 parts cross-linking liquid; the base liquid is 98.1~98.5 parts water, 0.2~
0.6份稠化剂、 1.0份胶体保护剂、 0.2份增效剂和 0.1份破乳助排剂组成 ； 所述的交 联液是由 49.6份水、 50份交联剂和 0.4份的破胶剂。 0.6 parts thickener, 1.0 part colloidal protectant, 0.2 part synergist and 0.1 part demulsifier drainage agent; the cross-linking liquid is composed of 49.6 parts water, 50 parts cross-linking agent and 0.4 parts of broken glue Agent.
所述的胶体保护剂为有机膦系列阻垢剂或聚羧酸类阻垢分散剂其中的一种或者 几种混合物， 确保矿化度在 60000ppm、 90°C下不产生沉淀。  The colloidal protective agent is one or a mixture of an organic phosphine series scale inhibitor or a polycarboxylic acid scale inhibitor dispersant, and ensures that the salinity does not precipitate at 60,000 ppm and 90 °C.
所述的交联剂是指三乙醇胺硼酸酯、 乙二醇硼酸酯、 氯氧化锆、 锆酸四丁酯或 硼、 锆的有机或无机化合物中的一种或者几种的混合物。  The crosslinking agent means a mixture of one or more of triethanolamine borate, ethylene glycol borate, zirconium oxychloride, tetrabutyl zirconate or an organic or inorganic compound of boron or zirconium.
所述的破胶剂为过硫酸铵、 过硫酸钾、 双氧水、 聚糖酶或其它生物酶中的一种 或者几种组合使用。  The breaker is used in combination of one or a combination of ammonium persulfate, potassium persulfate, hydrogen peroxide, glycanase or other biological enzymes.
所述的稠化剂为改性稠化剂， 该改性稠化剂制备： 首先进行醚化， 具体方法为： 瓜尔胶片、水、烧碱、乙醇、环氧乙烷比例按照质量比为 5:6:0.44: 12: 1.2〜3.3在 60°C〜 80°C下反应 31！〜 6h， 冷却、 醋酸中和至中性、 增粘、 干燥、 粉碎， 然后将得到的羟 丙基胍胶再进行磺酸基化， 具体方式为： 在惰性气体保护条件下， 羟丙基胍胶、 水、 烧碱、 3-氯 -2-羟基丙磺酸钠按照 6:8:0.3〜1： 2.0—4.2比例在 75 °C〜90°C下反应 31！〜 5h， 降温至 25°C， 中和、 分离、 纯化、 增粘、 干燥、 粉碎得到改性所需稠化剂。  The thickening agent is a modified thickening agent, and the modified thickening agent is prepared: firstly, etherification is carried out, and the specific method is: the ratio of guar film, water, caustic soda, ethanol and ethylene oxide is 5 according to the mass ratio. :6:0.44: 12: 1.2~3.3 Reaction at 60 ° C ~ 80 ° C 31! ~ 6h, cooled, neutralized to neutral, viscosified, dried, pulverized, and then sulfonated the resulting hydroxypropyl sulfonate in the following manner: Under inert gas protection conditions, hydroxypropyl hydrazine Glue, water, caustic soda, sodium 3-chloro-2-hydroxypropane sulfonate in the ratio of 6:8:0.3~1: 2.0-4.2 at 75 °C ~ 90 °C reaction 31! ~ 5h, cooled to 25 ° C, neutralized, separated, purified, viscosified, dried, pulverized to obtain the required thickener.
所述的增效剂为： 一种含有机阳离子和非离子表面活剂基团的低分子量高聚物 溶液， 其分子式是： ClNH4CHF(C¾)nOS03H'N(CH2CH2OH)3， 其中 n值为 12〜18。 The synergist is: a low molecular weight high polymer solution containing organic cations and nonionic surfactant groups, the molecular formula is: ClNH 4 CHF(C3⁄4) n OS0 3 H'N (CH 2 CH 2 OH) 3 , wherein the value of n is 12 to 18.
所述的破乳助排剂是由水、 氟碳表面活性剂 FC-211、 十二烷基硫酸钠 SDS、 壬 基酚聚氧乙烯醚 OP-10按照 300〜400： 1： 250〜300： 3〜10比例进行复配而成。 所述的一种海水基速溶压裂液的制备方法， 歩骤如下： The demulsification drainage agent is composed of water, fluorocarbon surfactant FC-211, sodium lauryl sulfate SDS, nonylphenol ethoxylate OP-10 according to 300~400: 1:250~300: 3 to 10 ratios are compounded. The preparation method of the seawater-based instant fracturing fluid is as follows:
1 ) 配制基液： 在现场使用的连续混配车粉料罐里面加入配方量的稠化剂， 胶 体保护剂、 破乳助排剂和增效剂按照配方量的比例混合倒入盛有配方量的水池中， 混配车根据施工的要求调整粉料罐的下粉速度，速度为 6〜12kg/min和水基料吸入泵 的吸入速度为 60L/min， 在混配车排出口形成基液；  1) Formulation base solution: Add the formula thickener in the continuous mixing car powder tank used in the field. The colloidal protective agent, demulsifier drainage agent and synergist are mixed according to the formula amount and poured into the formula. In the quantity of pools, the mixing truck adjusts the powder speed of the powder tank according to the requirements of the construction, the speed is 6~12kg/min and the suction speed of the water base suction pump is 60L/min, forming a base at the discharge port of the compound truck. Liquid
2) 交联液的配制： 将交联剂和破胶剂与水按配方比例充分混合均匀；  2) Preparation of cross-linking liquid: Mix the cross-linking agent and the breaker together with water according to the formula ratio;
3 ) 压裂液的配制： 在搅拌的状况下， 将歩骤 1的基液和歩骤 2的交联液按配方 比例充分混合均匀， 以形成高粘度的液体， 即可。 该压裂液适用于在井温在 170°C以内的油气井使用。  3) Preparation of fracturing fluid: Under stirring, mix the base solution of step 1 and the cross-linking liquid of step 2 in a proportion of the formulation to form a highly viscous liquid. This fracturing fluid is suitable for use in oil and gas wells where the well temperature is within 170 °C.
本发明具有以下几个优点  The invention has the following advantages
1、 海水压裂液稠化剂具有较快的溶胀率： 10°C、 0.6%增稠剂在海水中的溶胀速 率达到 85%以上， 可满足连续混配施工工艺要求；  1. The seawater fracturing fluid thickener has a faster swelling ratio: 10 ° C, 0.6% thickener in seawater, the swelling rate of more than 85%, can meet the requirements of continuous compounding construction process;
2、 形成的压裂液抗盐 60000ppm以上， 渤海湾及其他地区的海水可以直接连续 混配， 具有较好的抗盐性能；  2. The fracturing fluid formed is more than 60000ppm, and the seawater in Bohai Bay and other areas can be directly mixed continuously, which has good salt resistance;
3、 可满足混配车自吸海水边配液边压裂的模式， 降低了成本和施工的风险， 促 进大规模的应用， 综合成本较常规的模式降低 30%以上。  3. It can meet the mode of liquid-side fracturing of self-priming seawater in mixed vehicles, reduce the cost and construction risk, promote large-scale application, and reduce the comprehensive cost by more than 30% compared with the conventional mode.
4、 本发明压裂液适用于在井温在 170°C以内的油气井使用。  4. The fracturing fluid of the present invention is suitable for use in oil and gas wells having a well temperature of 170 ° C or less.
附图说明 DRAWINGS
下面结合具体实施例和附图对本发明进一歩说明， 但不作为对本发明的限定。 图 1为耐温性能效果。  The invention will be further described with reference to the specific embodiments and the accompanying drawings, but not to limit the invention. Figure 1 shows the effect of temperature resistance.
具体实施方式 detailed description
实施例 1 Example 1
一种海水基速溶压裂液由 97份基液和 3份交联液组成；所述的基液是由 98.1份 水、 0.2份稠化剂、 1.0份胶体保护剂、 0.2份增效剂和 0.1份破乳助排剂组成 ； 所述 的交联液是由 49.6份水、 50份交联剂和 0.4份的破胶剂。 A seawater-based instant fracturing fluid consisting of 97 parts base liquid and 3 parts cross-linking liquid; the base liquid is 98.1 parts Water, 0.2 parts thickener, 1.0 part colloidal protectant, 0.2 part synergist and 0.1 part demulsifier drainage agent; the cross-linking liquid is composed of 49.6 parts water, 50 parts cross-linking agent and 0.4 parts Glue breaker.
该压裂液的制备方法， 歩骤如下：  The preparation method of the fracturing fluid is as follows:
1 ) 配制基液： 在现场使用的连续混配车粉料罐里面加入配方量的稠化剂， 胶体 保护剂、 破乳助排剂和增效剂按照配方量的比例混合倒入盛有配方量的水池中， 混 配车根据施工的要求调整粉料罐的下粉速度，速度为 6〜12kg/min和水基料吸入泵的 吸入速度为 60L/min， 在混配车排出口形成基液；  1) Formulation base solution: Add the formula thickener in the continuous mixing car powder tank used in the field. The colloidal protective agent, demulsifier drainage agent and synergist are mixed according to the formula amount and poured into the formula. In the quantity of pools, the mixing truck adjusts the powder speed of the powder tank according to the requirements of the construction, the speed is 6~12kg/min and the suction speed of the water base suction pump is 60L/min, forming a base at the discharge port of the compound truck. Liquid
2) 交联液的配制： 将交联剂和破胶剂与水按配方比例充分混合均匀；  2) Preparation of cross-linking liquid: Mix the cross-linking agent and the breaker together with water according to the formula ratio;
3 ) 压裂液的配制： 在搅拌的状况下， 将歩骤 1的基液和歩骤 2的交联液按配方 比例充分混合均匀， 以形成高粘度的液体， 即可。  3) Preparation of fracturing fluid: Under stirring, mix the base solution of step 1 and the cross-linking liquid of step 2 in a proportion of the formulation to form a highly viscous liquid.
所述的胶体保护剂为有机膦系列阻垢剂或聚羧酸类阻垢分散剂其中的一种或者 几种混合物， 确保矿化度在 60000ppm、 90°C下不产生沉淀； 本实施例采用的是有机 膦系列阻垢剂， 具体为乙二胺四甲叉膦酸钠 EDTMPS;  The colloidal protective agent is one or a mixture of an organic phosphine series scale inhibitor or a polycarboxylic acid scale inhibitor dispersing agent, and ensures that the salinity does not precipitate at 60,000 ppm and 90 ° C; Is an organic phosphine series scale inhibitor, specifically ethylenediamine tetramethylene phosphonate EDTMPS;
所述的交联剂是指三乙醇胺硼酸酯、 乙二醇硼酸酯、 氯氧化锆、 锆酸四丁酯或 硼、 锆的有机或无机化合物中的一种或者几种的混合物； 本实施例交联剂采用的是 三乙醇胺硼酸酯。  The crosslinking agent refers to a mixture of one or more of triethanolamine borate, ethylene glycol borate, zirconium oxychloride, tetrabutyl zirconate or boron, zirconium organic or inorganic compounds; The example cross-linking agent used was triethanolamine borate.
所述的破胶剂为过硫酸铵、 过硫酸钾、 双氧水、 聚糖酶或其它生物酶中的一种 或者几种组合使用。 本实施例破胶剂采用的是过硫酸铵。  The breaker is used in combination of one or a combination of ammonium persulfate, potassium persulfate, hydrogen peroxide, glycanase or other biological enzymes. The gel breaker of this embodiment is ammonium persulfate.
所述的稠化剂为改性稠化剂， 该改性稠化剂制备： 首先进行醚化， 具体方法为： 瓜尔胶片、 水、 烧碱、 乙醇、 环氧乙烷比例按照质量比为 5:6:0.44: 12 : 1.2-3.3 在 60°C~80°C下反应 3h~6h， 冷却、 醋酸中和至中性、 增粘、 干燥、 粉碎， 然后将得到 的羟丙基胍胶再进行磺酸基化， 具体方式为： 在惰性气体保护条件下， 羟丙基胍胶、 水、 烧碱、 3-氯 -2-羟基丙磺酸钠按照 6:8:0.3~1： 2.0-4.2 比例在 75°C~90°C下反应 31！〜 5h， 降温至 25 °C， 中和、 分离、 纯化、 增粘、 干燥、 粉碎得到改性所需稠化剂。 其中中和、 分离、 纯化、 增粘、 干燥、 粉碎均为公知技术这里就不做详细描述。 所述的增效剂为： 一种含有机阳离子和非离子表面活剂基团的低分子量高聚物 溶液， 其分子式是： ClNH4CHF(CH2)nOS03H'N(CH2CH2OH)3， 其中 n值为 12~18。 所述的破乳助排剂是由水、 氟碳表面活性剂 FC-211、 十二烷基硫酸钠 SDS、 壬 基酚聚氧乙烯醚 OP-10按照质量比 350: 1： 280： 7比例进行复配而成。 实施例 2 同实施例 1基本相同， 不同之处是： The thickening agent is a modified thickening agent, and the modified thickening agent is prepared: firstly, etherification is carried out by: the ratio of guar film, water, caustic soda, ethanol and ethylene oxide is 5 according to a mass ratio. :6:0.44: 12 : 1.2-3.3 React at 60 ° C ~ 80 ° C for 3h ~ 6h, cool, neutralize acetic acid to neutral, thicken, dry, pulverize, and then get the hydroxypropyl phthalate The sulfonation is carried out in the following manner: Under the protection of inert gas, hydroxypropyl phthalocyanine, water, caustic soda, sodium 3-chloro-2-hydroxypropane sulfonate according to 6:8:0.3~1: 2.0-4.2 The ratio is 30 at 75 ° C ~ 90 ° C! ~ 5h, cooled to 25 °C, neutralized, separated, purified, viscosified, dried, pulverized to obtain the required thickener. Neutralization, separation, purification, thickening, drying, and pulverization are all well-known techniques and will not be described in detail herein. The synergist is: a low molecular weight high polymer solution containing organic cations and nonionic surfactant groups, the molecular formula is: ClNH 4 CHF(CH 2 ) n OS0 3 H'N (CH 2 CH 2 OH) 3 , where n is 12-18. The demulsification drainage agent is composed of water, fluorocarbon surfactant FC-211, sodium lauryl sulfate SDS, nonylphenol ethoxylate OP-10 according to a mass ratio of 350: 1: 280: 7 It is compounded. Embodiment 2 is basically the same as Embodiment 1, except that:
该压裂液由 97份基液和 3份交联液组成； 所述的基液是由 98.5份水、 0.6份稠 化剂、 1.0份胶体保护剂、 0.2份增效剂和 0.1份破乳助排剂组成 ； 所述的交联液是 由 49.6份水、 50份交联剂和 0.4份的破胶剂。  The fracturing fluid consists of 97 parts base liquid and 3 parts cross-linking liquid; the base liquid is 98.5 parts water, 0.6 parts thickener, 1.0 part colloidal protectant, 0.2 part synergist and 0.1 part demulsification The drainage agent is composed; the cross-linking liquid is composed of 49.6 parts of water, 50 parts of a crosslinking agent and 0.4 parts of a breaker.
本实施例采用的胶体保护剂是有机膦系列阻垢剂， 具体为 2-膦酸丁烷 -1， 2， 4- 三羧酸 PBTCA; 本实施例交联剂采用的是氯氧化锆。 本实施例破胶剂采用的是过硫 酸钾； 所述的破乳助排剂是由水、 氟碳表面活性剂 FC-211、 十二烷基硫酸钠 SDS、 壬基酚聚氧乙烯醚 OP-10按照质量比 300: 1： 250： 3比例进行复配而成。 实施例 3 同实施例 1基本相同， 不同之处是：  The colloidal protective agent used in this embodiment is an organic phosphine series scale inhibitor, specifically 2-phosphonic acid butane-1, 2, 4-tricarboxylic acid PBTCA; the crosslinking agent used in this embodiment is zirconium oxychloride. The demulsifier of the present embodiment is potassium persulfate; the demulsification drainage agent is composed of water, fluorocarbon surfactant FC-211, sodium lauryl sulfate SDS, nonylphenol polyoxyethylene ether OP -10 is compounded in a mass ratio of 300: 1: 250:3. Embodiment 3 is basically the same as Embodiment 1, and the difference is:
该压裂液由 97份基液和 3份交联液组成； 所述的基液是由 98.3份水、 0. 4份稠 化剂、 1.0份胶体保护剂、 0.2份增效剂和 0.1份破乳助排剂组成 ； 所述的交联液是 由 49.6份水、 50份交联剂和 0.4份的破胶剂。 本实施例采用的胶体保护剂是聚羧酸类阻垢分散剂， 具体为聚环氧琥珀酸 (钠） PESA; 本实施例交联剂采用的是锆酸四丁酯。 本实施例采用的破胶剂是过硫 酸铵； 所述的破乳助排剂是由水、 氟碳表面活性剂 FC-211、 十二烷基硫酸钠 SDS、 壬基酚聚氧乙烯醚 OP-10按照质量比 400: 1： 300： 10比例进行复配而成。 本实施 例的增效剂采用本领域常规的增效剂， 这里就不做详细说明。 实施例 4 同实施例 1基本相同， 不同之处是： The fracturing fluid consists of 97 parts base liquid and 3 parts cross-linking liquid; the base liquid is 98.3 parts water, 0.4 parts thickener, 1.0 part colloidal protectant, 0.2 part synergist and 0.1 parts. The composition of the demulsification drainage agent; the crosslinking liquid is composed of 49.6 parts of water, 50 parts of a crosslinking agent and 0.4 parts of a breaker. The colloidal protective agent used in this embodiment is a polycarboxylic acid scale inhibitor dispersing agent, specifically polyepoxysuccinic acid (sodium) PESA; the crosslinking agent used in this embodiment is tetrabutyl zirconate. The breaker used in this embodiment is ammonium persulfate; the emulsion breaker is composed of water, fluorocarbon surfactant FC-211, sodium lauryl sulfate SDS, nonylphenol ethoxylate OP -10 is compounded in a mass ratio of 400: 1: 300:10. The synergist of this embodiment employs a conventional synergist in the art and will not be described in detail herein. Embodiment 4 is basically the same as Embodiment 1, except that:
本实施例采用的胶体保护剂是有机膦系列阻垢剂和聚羧酸类阻垢分散剂按 1 ： 1的质量比混合物； 本实施例交联剂采用的是三乙醇胺硼酸酯和乙二醇硼酸酯按 1 ： 1的质量比混合物； 本实施例采用的破胶剂是双氧水和聚糖酶按 1 ： 1的质量比混 合物。  The colloidal protective agent used in this embodiment is a mixture of an organic phosphine series scale inhibitor and a polycarboxylic acid scale inhibitor dispersant in a mass ratio of 1:1; the crosslinking agent in this embodiment is a triethanolamine borate and an ethylene compound. The alcohol borate ester is a mixture of a mass ratio of 1:1; the gel breaker used in this embodiment is a mixture of hydrogen peroxide and glycanase in a mass ratio of 1:1.
实施例 5 在现场的连续混配车粉料罐里面加入稠化剂， 将胶体保护剂、 破乳助排剂、 增效 剂这三种水基料倒入 30m3水池， 稠化剂、 胶体保护剂、 破乳助排剂和增效剂按照 3:10:1 :2的质量比例； 如果现场施工排量为 2m3/min， 施工时连续混配车的稠化剂下 粉速度为 6kg/min， 水基料的吸入排量为 60L/min; 形成基液。 在现场 5m3容器中加入 1982.5Kg清水， 在用泵循环或搅拌器搅拌的情况下， 加 入 2000Kg交联剂及 17.5kg过硫酸铵， 继续循环或搅拌 30分钟， 以便交联剂和过硫 酸铵溶解并混合充分， 形成含有破胶剂的、 含量为 50%交联液。 Example 5 Adding a thickening agent to the continuous mixing vehicle powder tank on site, and pouring the three water base materials of colloidal protective agent, demulsifier drainage aid and synergist into a 30m 3 pool, thickener and colloid The protective agent, demulsifier drainage aid and synergist are in accordance with the mass ratio of 3:10:1:2; if the on-site construction displacement is 2m 3 /min, the powder speed of the thickener under continuous mixing is 6kg during construction. /min, the water base has a suction displacement of 60 L/min ; a base liquid is formed. Add 1982.5Kg of clean water to the 5m 3 container on site, add 2000Kg of cross-linking agent and 17.5kg of ammonium persulfate with pump circulation or stirrer, continue to circulate or stir for 30 minutes, so as to make cross-linking agent and ammonium persulfate. Dissolved and mixed well to form a 50% cross-linking liquid containing a breaker.
压裂施工时， 在泵注基液的同时， 将交联液按基液:交联液 =100公升： 2~4公升 的体积比进行混合而形成压裂液。  During fracturing, the cross-linking liquid is mixed with the base liquid: cross-linking liquid = 100 liters: 2 to 4 liters by volume ratio to form a fracturing fluid.
以上压裂液推荐在井温为不超过 100°C的油气井进行使用。  The above fracturing fluid is recommended for use in oil and gas wells where the well temperature does not exceed 100 °C.
所述的胶体保护剂为有机膦系列阻垢剂，具体为乙二胺四甲叉膦酸钠 EDTMPS; 确保矿化度在 60000ppm、 90 °C下不产生沉淀； 本实施例交联剂采用的是三乙醇胺硼 酸酯。 所述的稠化剂为改性稠化剂， 该改性稠化剂制备： 首先进行醚化， 具体方法 为： 瓜尔胶片、 水、 烧碱、 乙醇、 环氧乙烷比例按照质量比为 5:6:0.44:12: 1.2-3.3 在 60°C~80°C下反应 3h~6h， 冷却、 醋酸中和至中性、 增粘、 干燥、 粉碎， 然后将得 到的羟丙基胍胶再进行磺酸基化， 具体方式为： 在惰性气体保护条件下， 羟丙基胍 胶、 水、 烧碱、 3-氯 -2-羟基丙磺酸钠按照 6:8:0.3~1 : 2.0~4.2比例在 75°C~90°C下反应 31！〜 5h， 降温至 25 °C， 中和、 分离、 纯化、 增粘、 干燥、 粉碎得到改性所需稠化剂。 其中中和、 分离、 纯化、 增粘、 干燥、 粉碎均为公知技术这里就不做详细描述。 所 述的增效剂为： 一种含有机阳离子和非离子表面活剂基团的低分子量高聚物溶液， 其分子式是： ClNH4CHF(CH2)nOS03H'N(CH2CH2OH)3， 其中 n值为 12~18。 所述的破乳助排剂是由水、 氟碳表面活性剂 FC-211、 十二烷基硫酸钠 SDS、 壬 基酚聚氧乙烯醚 OP-10按照质量比 350: 1： 280： 7比例进行复配而成。 The colloidal protective agent is an organic phosphine series scale inhibitor, specifically ethylenediamine tetramethylene phosphonate EDTMPS; ensuring that the salinity does not precipitate at 60,000 ppm, 90 ° C; It is a triethanolamine borate. The thickening agent is a modified thickening agent, and the modified thickening agent is prepared: firstly, etherification is carried out by: the ratio of guar film, water, caustic soda, ethanol and ethylene oxide is 5 according to a mass ratio. :6:0.44:12: 1.2-3.3 react at 60 ° C ~ 80 ° C for 3h ~ 6h, cool, neutralize acetic acid to neutral, thicken, dry, pulverize, and then get the hydroxypropyl phthalate The sulfonation is carried out in the following manner: Under the protection of inert gas, hydroxypropyl hydrazine Glue, water, caustic soda, sodium 3-chloro-2-hydroxypropane sulfonate according to the ratio of 6:8:0.3~1: 2.0~4.2 at 75 °C ~ 90 °C 31! ~ 5h, cooled to 25 °C, neutralized, separated, purified, viscosified, dried, pulverized to obtain the required thickener. Neutralization, separation, purification, thickening, drying, and pulverization are all well-known techniques and will not be described in detail herein. The synergist is: a low molecular weight high polymer solution containing organic cations and nonionic surfactant groups, the molecular formula is: ClNH 4 CHF(CH 2 ) n OS0 3 H'N (CH 2 CH 2 OH) 3 , where n is 12-18. The demulsification drainage agent is composed of water, fluorocarbon surfactant FC-211, sodium lauryl sulfate SDS, nonylphenol ethoxylate OP-10 according to a mass ratio of 350: 1: 280: 7 It is compounded.
实施例 6 在现场的连续混配车粉料罐里面加入稠化剂， 将胶体保护剂、 破乳助排剂、 增 效剂这三种水基料倒入 30m3水池， 稠化剂、 胶体保护剂、 破乳助排剂和增效剂按照 4: 10:1 :2的质量比例； 如果现场施工排量为 2m3/min， 施工时连续混配车的稠化剂下 粉速度为 8kg/min， 水基料的吸入排量为 60L/min; 形成基液。 Example 6 Add a thickening agent to the continuous mixing vehicle powder tank on site, and pour the three water base materials of colloidal protective agent, demulsifier drainage aid and synergist into the 30m 3 pool, thickener and colloid. protective agents, synergists and drainage aids demulsification according to 4: 10: 1: 2 ratio by mass; construction site if displacement of 2m 3 / min, under continuous compounding powder thickener vehicle speed construction 8kg /min, the water base has a suction displacement of 60 L/min ; a base liquid is formed.
在现场 5m3容器中加入 1982.5Kg清水， 在用泵循环或搅拌器搅拌的情况下， 加 入 2000Kg交联剂及 17.5kg过硫酸铵， 继续循环或搅拌 30分钟， 以便交联剂和过硫 酸铵溶解并混合充分， 形成含有破胶剂的、 含量为 50%交联液。 Add 1982.5Kg of clean water to the 5m 3 container on site, add 2000Kg of cross-linking agent and 17.5kg of ammonium persulfate with pump circulation or stirrer, continue to circulate or stir for 30 minutes, so as to make cross-linking agent and ammonium persulfate. Dissolved and mixed well to form a 50% cross-linking liquid containing a breaker.
压裂施工时， 在泵注基液的同时， 将交联液按基液:交联液 =100公升： 2~4公升 的体积比进行混合而形成压裂液。  During fracturing, the cross-linking liquid is mixed with the base liquid: cross-linking liquid = 100 liters: 2 to 4 liters by volume ratio to form a fracturing fluid.
以上压裂液推荐在井温为不超过 130°C的油气井进行使用。  The above fracturing fluid is recommended for use in oil and gas wells where the well temperature does not exceed 130 °C.
实施例 7 Example 7
在现场的连续混配车粉料罐里面加入稠化剂， 将胶体保护剂、 破乳助排剂、 增 效剂这三种水基料倒入 30m3水池， 稠化剂、 胶体保护剂、 破乳助排剂和增效剂按照 5: 10:1 :2的质量比例； 如果现场施工排量为 2m3/min， 施工时连续混配车的稠化剂下 粉速度为 10kg/min， 水基料的吸入排量为 60L/min; 形成基液。 在现场 5m3容器中加入 1982.5Kg清水， 在用泵循环或搅拌器搅拌的情况下， 加 入 2000Kg交联剂及 17.5kg过硫酸铵， 继续循环或搅拌 30分钟， 以便交联剂和过硫 酸铵溶解并混合充分， 形成含有破胶剂的、 含量为 50%交联液。 Add the thickening agent to the continuous mixing car powder tank on site, and pour the three water base materials of colloidal protective agent, demulsifier drainage aid and synergist into the 30m 3 pool, thickener and colloid protectant. The demulsifier drainage agent and synergist are in accordance with the mass ratio of 5:10:1:2; if the on-site construction displacement is 2m 3 /min, the powder speed of the thickener under continuous mixing is 10kg/min during construction. The water base has a suction displacement of 60 L/min ; a base liquid is formed. Add 1982.5Kg of clean water to the 5m 3 container on site, add 2000Kg of cross-linking agent and 17.5kg of ammonium persulfate with pump circulation or stirrer, continue to circulate or stir for 30 minutes, so as to make cross-linking agent and ammonium persulfate. Dissolved and mixed well to form a 50% cross-linking liquid containing a breaker.
压裂施工时， 在泵注基液的同时， 将交联液按基液:交联液 =100公升： 2~4公升 的体积比进行混合而形成压裂液。  During fracturing, the cross-linking liquid is mixed with the base liquid: cross-linking liquid = 100 liters: 2 to 4 liters by volume ratio to form a fracturing fluid.
以上压裂液推荐在井温为不超过 150°C的油气井进行使用。  The above fracturing fluid is recommended for use in oil and gas wells with a well temperature not exceeding 150 °C.
实施例 8 Example 8
在现场的连续混配车粉料罐里面加入稠化剂， 将胶体保护剂、 破乳助排剂、 增 效剂这三种水基料倒入 30m3水池， 稠化剂、 胶体保护剂、 破乳助排剂和增效剂按照 6: 10:1 :2的质量比例； 如果现场施工排量为 2m3/min， 施工时连续混配车的稠化剂下 粉速度为 12kg/min， 水基料的吸入排量为 60L/min; 形成基液。 Add the thickening agent to the continuous mixing car powder tank on site, and pour the three water base materials of colloidal protective agent, demulsifier drainage aid and synergist into the 30m 3 pool, thickener and colloid protectant. The demulsification drainage agent and synergist are in accordance with the mass ratio of 6:10:1:2; if the on-site construction displacement is 2m 3 /min, the powder speed of the thickener under continuous mixing is 12kg/min during construction. The water base has a suction displacement of 60 L/min ; a base liquid is formed.
在现场 5m3容器中加入 1982.5Kg清水， 在用泵循环或搅拌器搅拌的情况下， 加 入 2000Kg交联剂及 17.5kg过硫酸铵， 继续循环或搅拌 30分钟， 以便交联剂和过硫 酸铵溶解并混合充分， 形成含有破胶剂的、 含量为 50%交联液。 Add 1982.5Kg of clean water to the 5m 3 container on site, add 2000Kg of cross-linking agent and 17.5kg of ammonium persulfate with pump circulation or stirrer, continue to circulate or stir for 30 minutes, so as to make cross-linking agent and ammonium persulfate. Dissolved and mixed well to form a 50% cross-linking liquid containing a breaker.
压裂施工时， 在泵注基液的同时， 将交联液按基液:交联液 =100公升： 2~4公升 的体积比进行混合而形成压裂液。  During fracturing, the cross-linking liquid is mixed with the base liquid: cross-linking liquid = 100 liters: 2 to 4 liters by volume ratio to form a fracturing fluid.
以上压裂液推荐在井温为不超过 170°C的油气井进行使用。  The above fracturing fluid is recommended for use in oil and gas wells where the well temperature does not exceed 170 °C.
本发明一种海水基速溶压裂液只要由 65〜99.99份基液和 0.01〜35.0份交联液组 成;所述的基液是由 95.0〜99.6份水、 0.1~1.0份稠化剂、 0.1~2.0份胶体保护剂、0.1~1.0 份增效剂和 0.1~1.0份破乳助排剂组成；所述的交联液是由 0〜99.9份水、 0.1〜100.0 份交联剂和 0.001〜0.5份的破胶剂； 范围之内数值均可以。  The seawater-based instant fracturing fluid of the present invention is composed of 65~99.99 parts base liquid and 0.01~35.0 parts cross-linking liquid; the base liquid is 95.0~99.6 parts water, 0.1-1.0 part thickener, 0.1 ~2.0 parts colloidal protective agent, 0.1~1.0 part synergist and 0.1~1.0 part demulsifier drainage agent; the cross-linking liquid is from 0~99.9 parts water, 0.1~100.0 parts cross-linking agent and 0.001~ 0.5 parts of gel breaker; values within the range are acceptable.
上述实施例中的乙二胺四甲叉膦酸钠 EDTMPS、 2-膦酸丁烷 -1， 2， 4-三羧酸 PBTCA和聚环氧琥珀酸（钠） PESA均购自为山东省泰和水处理有限公司； 面活性剂 FC-211购自浙江衢州佳盟化工有限公司；十二烷基硫酸钠 SDS购自湖南丽 臣奥威实业有限公司；壬基酚聚氧乙烯醚 OP-10购自天津市浩元精细化工有限公司。 ；*：发昍的教 验 Ethylenediamine tetramethylene phosphonate EDTMPS, 2-phosphonic acid butane-1, 2, 4-tricarboxylic acid in the above examples PBTCA and polyepoxysuccinic acid (sodium) PESA were purchased from Shandong Taihe Water Treatment Co., Ltd.; surfactant FC-211 was purchased from Zhejiang Yinzhou Jiameng Chemical Co., Ltd.; sodium lauryl sulfate SDS was purchased from Hunan Li Chen Aowei Industrial Co., Ltd.; nonylphenol ethoxylate OP-10 was purchased from Tianjin Haoyuan Fine Chemical Co., Ltd. ;*: the test of the bun
1、 本发明采用的不同浓度改性稠化剂在海水、 清水中粘度对比 1. Viscosity comparison of different concentrations of modified thickeners in seawater and clean water used in the present invention
Figure imgf000011_0001
Figure imgf000011_0002
Figure imgf000011_0001
Figure imgf000011_0002
3、 耐温性能 采用实施例 1或实施例 5的配方及制备方法耐温性能见图 1， 从图 1可知， 本发 明配制的海水基速溶压裂液具有的速溶、 抗盐、 耐高温等性能， 可满足混配车自吸 海水边配液边压裂的模式， 降低了成本和施工的风险， 促进大规模的应用， 综合成 本较常规的模式降低 30%以上， 将海上压裂模式进行了创新， 具有良好的经济效益 和巨大的社会效益， 具有广阔的应用前景。 采用其它实施例做耐温性能其效果基本 一致。 3. Temperature resistance The temperature resistance of the formulation and preparation method of Example 1 or Example 5 is shown in Fig. 1. As can be seen from Fig. 1, the seawater-based instant solution fracturing fluid prepared by the invention has instant dissolution, salt resistance, high temperature resistance, etc. Performance, can meet the self-priming of the mixed car The model of liquid-side fracturing at seawater reduces the cost and construction risk, promotes large-scale application, reduces the comprehensive cost by more than 30% compared with the conventional model, and innovates the offshore fracturing mode with good economic benefits. Great social benefits and broad application prospects. The effect of using other embodiments for temperature resistance is basically the same.
本实施例没有详细叙述的工艺属本行业的公知的常用手段， 这里不一一叙述。  The processes not described in detail in the present embodiment are well-known conventional means in the art, and are not described here.

Claims

权 利 要 求 书 claims
1、 一种海水基速溶压裂液， 其特征在于： 该压裂液由 65〜99.99份基液和 0.01〜35.0份交联 液组成； 所述的基液是由 95.0〜99.6份水、 0.1〜1.0份稠化剂、 0.1〜2.0份胶体保护剂、 0.1〜1.0份增 效剂和 0.1〜1.0份破乳助排剂组成；所述的交联液是由 0〜99.9份水、 0.1〜100.0份交联剂和 0.001〜 0.5份的破胶剂。 1. A seawater-based instant fracturing fluid, characterized in that: the fracturing fluid is composed of 65 to 99.99 parts of base fluid and 0.01 to 35.0 parts of cross-linked fluid; the base fluid is composed of 95.0 to 99.6 parts of water, 0.1 ~1.0 parts of thickening agent, 0.1~2.0 parts of colloidal protective agent, 0.1~1.0 parts of synergist and 0.1~1.0 parts of demulsifying and drainage aid; the cross-linking liquid is composed of 0~99.9 parts of water, 0.1~ 100.0 parts of cross-linking agent and 0.001~0.5 parts of gel breaker.
2、 根据权利要求 1所述的一种海水基速溶压裂液， 其特征在于： 该压裂液由 97份基液和 3 份交联液组成； 所述的基液是由 98.1〜98.5份水、 0.2〜0.6份稠化剂、 1.0份胶体保护剂、 0.2份增效 剂和 0.1份破乳助排剂组成 ； 所述的交联液是由 49.6份水、 50份交联剂和 0.4份的破胶剂。 2. A seawater-based instant fracturing fluid according to claim 1, characterized in that: the fracturing fluid consists of 97 parts of base fluid and 3 parts of cross-linking fluid; the base fluid is composed of 98.1 to 98.5 parts Water, 0.2~0.6 parts of thickening agent, 1.0 parts of colloidal protective agent, 0.2 parts of synergist and 0.1 part of demulsifying and drainage aid; the cross-linking liquid is composed of 49.6 parts of water, 50 parts of cross-linking agent and 0.4 parts of glue breaker.
3、 根据权利要求 1或 2所述的一种海水基速溶压裂液， 其特征在于： 所述的胶体保护剂为有 机膦系列阻垢剂或聚羧酸类阻垢分散剂其中的一种或者几种混合物，确保矿化度在 60000ppm、90°C 下不产生沉淀。 3. A seawater-based instant fracturing fluid according to claim 1 or 2, characterized in that: the colloidal protective agent is one of an organic phosphine series scale inhibitor or a polycarboxylic acid scale inhibitor and dispersant. Or several mixtures to ensure that the mineralization does not produce precipitation at 60000ppm and 90°C.
4、 根据权利要求 1或 2所述的一种海水基速溶压裂液， 其特征在于： 所述的交联剂是指三 乙醇胺硼酸酯、 乙二醇硼酸酯、 氯氧化锆、锆酸四丁酯或硼、锆的有机或无机化合物中的一种或者 几种的混合物。 4. A seawater-based instant fracturing fluid according to claim 1 or 2, characterized in that: the cross-linking agent refers to triethanolamine borate, ethylene glycol borate, zirconium oxychloride, zirconium Tetrabutyl acid or one or a mixture of several organic or inorganic compounds of boron and zirconium.
5、 根据权利要求 1或 2所述的一种海水基速溶压裂液， 其特征在于： 所述的破胶剂为过硫酸 铵、 过硫酸钾、 双氧水、 聚糖酶或其它生物酶中的一种或者几种组合使用。 5. A seawater-based instant fracturing fluid according to claim 1 or 2, characterized in that: the gel breaker is ammonium persulfate, potassium persulfate, hydrogen peroxide, polysaccharase or other biological enzymes. Use one type or a combination of several.
6、 根据权利要求 1或 2所述的一种海水基速溶压裂液， 其特征在于： 所述的稠化剂为改性稠 化剂， 该改性稠化剂制备： 首先进行醚化， 具体方法为： 瓜尔胶片、 水、 烧碱、 乙醇、 环氧乙烷比 例按照质量比为 5:6:0.44: 12: 1.2〜3.3在 60°C〜80°C下反应 31！〜 6h， 冷却、 醋酸中和至中性、 增粘、 干燥、 粉碎， 然后将得到的羟丙基胍胶再进行磺酸基化， 具体方式为： 在惰性气体保护条件下， 羟 丙基胍胶、水、烧碱、 3-氯 -2-羟基丙磺酸钠按照 6:8:0.3〜1 : 2.0〜4.2比例在 75 °C〜90°C下反应 31！〜 5h， 降温至 25 °C， 中和、 分离、 纯化、 增粘、 干燥、 粉碎得到改性所需稠化剂。 6. A seawater-based instant fracturing fluid according to claim 1 or 2, characterized in that: the thickener is a modified thickener, and the modified thickener is prepared: first, etherification is performed, The specific method is: guar film, water, caustic soda, ethanol, and ethylene oxide are reacted at a mass ratio of 5:6:0.44:12:1.2~3.3 at 60°C~80°C 31! ~6h, cool, neutralize with acetic acid to neutrality, thicken, dry, and pulverize, and then sulfonate the obtained hydroxypropyl guanidine. The specific method is: under inert gas protection conditions, hydroxypropyl guanidine Glue, water, caustic soda, and sodium 3-chloro-2-hydroxypropanesulfonate are reacted at a ratio of 6:8:0.3~1:2.0~4.2 at 75°C~90°C 31! ~5h, cool down to 25 °C, neutralize, separate, purify, thicken, dry, and pulverize to obtain the thickener required for modification.
7、 根据权利要求 1或 2所述的一种海水基速溶压裂液， 其特征在于： 所述的增效剂为： 一种 含有机阳离子和非离子表面活剂基团的低分子量高聚物溶液， 其分子式是： Cl H4CHF(CH2)nOS03H N(CH2CH2OH)3， 其中 n值为 12〜18。 7. A seawater-based instant fracturing fluid according to claim 1 or 2, characterized in that: the synergist is: a low molecular weight polymer containing organic cationic and nonionic surfactant groups material solution, its molecular formula is: Cl H 4 CHF (CH 2 ) n OS0 3 HN (CH 2 CH 2 OH) 3 , where the n value is 12 to 18.
8、根据权利要求 1或 2所述的一种海水基速溶压裂液， 其特征在于： 所述的破乳助排剂是由 水、 氟碳表面活性剂 FC-211、 十二烷基硫酸钠 SDS、 壬基酚聚氧乙烯醚 OP-10按照 300〜400： 1： 250-300： 3-10比例进行复配而成。 8. A seawater-based instant fracturing fluid according to claim 1 or 2, characterized in that: the demulsification and drainage aid is composed of water, fluorocarbon surfactant FC-211, and dodecyl sulfate Sodium SDS and nonylphenol polyoxyethylene ether OP-10 are compounded according to the ratio of 300~400: 1: 250-300: 3-10.
9、 根据权利要求 1或 2所述的一种海水基速溶压裂液的制备方法， 其特征在于： 步骤如下： 1 ) 配制基液： 在现场使用的连续混配车粉料罐里面加入配方量的稠化剂， 胶体保护剂、 破乳助排 剂和增效剂按照配方量的比例混合倒入盛有配方量的水池中，混配车根据施工的要求调整粉料罐的 下粉速度， 速度为 6〜12kg/min和水基料吸入泵的吸入速度为 60L/min， 在混配车排出口形成基液； 9. A method for preparing seawater-based instant fracturing fluid according to claim 1 or 2, characterized in that: the steps are as follows: 1) Preparation of base liquid: Add the formula amount of thickener, colloidal protective agent, demulsifying and drainage aid and synergist into the powder tank of the continuous mixing truck used on site. Mix and pour the formula into the powder tank according to the proportion of the formula amount. In the pool with a certain amount of water, the mixing car adjusts the powder feeding speed of the powder tank according to the construction requirements. The speed is 6~12kg/min and the suction speed of the water base material suction pump is 60L/min. A base is formed at the discharge port of the mixing car. liquid;
2 ) 交联液的配制： 将交联剂和破胶剂与水按配方比例充分混合均匀； 2) Preparation of cross-linking liquid: Fully mix the cross-linking agent, gel breaker and water according to the formula proportion;
3 )压裂液的配制： 在搅拌的状况下， 将步骤 1的基液和步骤 2的交联液按配方比例充分混合 均匀， 以形成高粘度的液体， 即可。 3) Preparation of fracturing fluid: While stirring, fully mix the base fluid in step 1 and the cross-linked fluid in step 2 according to the formula proportion to form a high-viscosity liquid.
10、根据权利要求 1或 2所述的一种海水基速溶压裂液， 其特征在于： 该压裂液适用于在井温在 170°C以内的油气井使用。 10. A seawater-based instant fracturing fluid according to claim 1 or 2, characterized in that: the fracturing fluid is suitable for use in oil and gas wells with a well temperature within 170°C.
PCT/CN2014/000064 2013-12-17 2014-01-17 Seawater-based quick-dissolving fracturing liquid and preparation method therefor WO2015089885A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201310690535.1A CN103666439B (en) 2013-12-17 2013-12-17 Seawater-based instant fracturing fluid and preparation method thereof
CN201310690535.1 2013-12-17

Publications (1)

Publication Number Publication Date
WO2015089885A1 true WO2015089885A1 (en) 2015-06-25

Family

ID=50305230

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2014/000064 WO2015089885A1 (en) 2013-12-17 2014-01-17 Seawater-based quick-dissolving fracturing liquid and preparation method therefor

Country Status (2)

Country Link
CN (1) CN103666439B (en)
WO (1) WO2015089885A1 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105542744B (en) * 2015-12-11 2018-04-06 中国石油天然气股份有限公司 Salt resistance thickening agent and the recyclable fracturing fluid of anti-salt type containing the salt resistance thickening agent
CN105778880B (en) * 2016-04-12 2018-12-18 三原弘迪森精细化工有限公司 Utilize the preparation method of high rigidity saline natural plant gum crosslinked fracturing fluid
CN106479472B (en) * 2016-08-29 2019-06-18 中国石油集团川庆钻探工程有限公司工程技术研究院 A kind of fracturing fluid and preparation method thereof
CN110437815A (en) * 2019-07-26 2019-11-12 大港油田集团有限责任公司 Seawater-based fracturing fluid and preparation method thereof
CN110373175A (en) * 2019-07-26 2019-10-25 大港油田集团有限责任公司 Seawater-based fracturing fluid crosslinking agent and fracturing fluid and preparation method
CN111718702A (en) * 2020-07-20 2020-09-29 中国石油大学(北京) Seawater-based fracturing filling liquid and preparation method and application thereof
CN114656946A (en) * 2022-03-09 2022-06-24 河南天祥新材料股份有限公司 Emulsion breaking and gel breaking agent for emulsion fracturing fluid without residues
CN117264088B (en) * 2023-11-17 2024-02-06 东营市宝泽能源科技有限公司 Instant guar gum and synthetic method and application thereof

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102757778A (en) * 2012-08-14 2012-10-31 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 Fracturing fluid capable of resisting high salinity water quality
CN103131405A (en) * 2013-03-20 2013-06-05 中国海洋石油总公司 High-temperature sea water-base fracturing liquid suitable for formation temperature of 160 DEG C and preparation method thereof
CN103289668A (en) * 2012-11-01 2013-09-11 湖北菲特沃尔科技有限公司 Method for preparing fracturing fluid by utilizing seawater
CN103305206A (en) * 2012-11-01 2013-09-18 湖北菲特沃尔科技有限公司 Method for continuously blending fracturing fluid by utilizing sea water

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101633840B (en) * 2009-07-08 2013-02-13 中国石油天然气股份有限公司 Hydrophobic group grafted and modified guar gum fracturing fluid gel
US8590621B2 (en) * 2010-04-06 2013-11-26 Halliburton Energy Services, Inc. Low damage seawater based frac pack fluid
CN102286276A (en) * 2011-07-06 2011-12-21 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 Method for preparing water base pressing crack liquid by multiple-effect thickening agents
CN102618249B (en) * 2012-03-05 2014-01-08 中国海洋石油总公司 Seawater base fracturing fluid and preparation method thereof

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102757778A (en) * 2012-08-14 2012-10-31 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 Fracturing fluid capable of resisting high salinity water quality
CN103289668A (en) * 2012-11-01 2013-09-11 湖北菲特沃尔科技有限公司 Method for preparing fracturing fluid by utilizing seawater
CN103305206A (en) * 2012-11-01 2013-09-18 湖北菲特沃尔科技有限公司 Method for continuously blending fracturing fluid by utilizing sea water
CN103131405A (en) * 2013-03-20 2013-06-05 中国海洋石油总公司 High-temperature sea water-base fracturing liquid suitable for formation temperature of 160 DEG C and preparation method thereof

Also Published As

Publication number Publication date
CN103666439A (en) 2014-03-26
CN103666439B (en) 2017-02-15

Similar Documents

Publication Publication Date Title
WO2015089885A1 (en) Seawater-based quick-dissolving fracturing liquid and preparation method therefor
CN103540304B (en) Surfactant composition for intensified oil production and preparation method thereof
CN103422840B (en) Use the flooding method of anions and canons complexed surfactant
WO2017084379A1 (en) Multifunctional composite fracturing fluid system
CN107573917B (en) Solid foam drainage agent composition and preparation method and application thereof
CN108559479B (en) Reverse microemulsion polymer fracturing liquid system capable of being constructed on line
EP2738191B1 (en) Amphiphilic macromolecule and use
CN104192918A (en) Sewage treatment agent, as well as preparation method and application thereof
CN103540303A (en) Composite surfactant composition as well as preparation method thereof
WO2018108186A1 (en) Authigenic acid-induced tackifying control system having oil washing function and preparation method therefor
CN106350053A (en) Quick-dissolving type seawater-based high-temperature fracturing fluid
Chen Polyacrylamide and its derivatives for oil recovery
CN105368430A (en) Oil-displacing agent, preparing method of oil-displacing agent and intensified oil production method
Zhang et al. Towards sustainable oil/gas fracking by reusing its process water: A review on fundamentals, challenges, and opportunities
CN109321225B (en) CO suitable for high-temperature high-salinity oil reservoir2Foaming agent system and preparation method thereof
CN107216865B (en) Self-diverting acidizing fluid and preparation method and application thereof
CN103206192B (en) A kind of method of quick removing oil well and nearly well oil reservoir indissoluble dirt
CN103031119A (en) Sulfonate-containing anionic/nonionic surfactant composition and preparation method
CN109749730B (en) Efficient and environment-friendly slickwater fracturing fluid drag reducer and preparation method thereof
CN103666440B (en) A kind of acid solution instant dissolving viscosifier and its preparation method
CN103773346B (en) Surfactant composition for high-efficiency displacement and preparation method of composition
CN110982506A (en) Integrated recyclable mixable fracturing fluid and construction method
CN102757777B (en) Inhibition water locking type high temperature resistant fracturing fluid for tight gas reservoir fracturing
CN106749892B (en) A kind of degreaser of heavy crude heat extraction sewage and preparation method thereof
AU2017210060B2 (en) Spacer fluid having sized particulates and methods of using the same

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 14872054

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 14872054

Country of ref document: EP

Kind code of ref document: A1