CN104449652A - 一种页岩气新型环保压裂液 - Google Patents

一种页岩气新型环保压裂液 Download PDF

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CN104449652A
CN104449652A CN201410731391.4A CN201410731391A CN104449652A CN 104449652 A CN104449652 A CN 104449652A CN 201410731391 A CN201410731391 A CN 201410731391A CN 104449652 A CN104449652 A CN 104449652A
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shale gas
fracturing liquid
environment friendly
fracturing fluid
novel environment
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王绍权
王一林
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Oofy (beijing) Petroleum Technology Co Ltd
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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
    • C09K8/62—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
    • C09K8/84—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
    • C09K8/882—Compositions based on water or polar solvents containing organic compounds macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • 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
    • C09K2208/26—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
    • C09K2208/00—Aspects relating to compositions of drilling or well treatment fluids
    • C09K2208/28—Friction or drag reducing additives

Abstract

本发明公开了一种页岩气新型环保压裂液，由0.3%~1%的氯化物金属类盐、0.2%~1% 的瓜胶、0.03%~0.15%的交联剂、0.03%~0.1%的破胶剂、0.06%~0.12%的降阻剂、0.02%~0.1% 的PH控制剂和余量水混合所得。其中氯化物金属类盐为氯化钾；交联剂为硼砂或三乙醇胺硼酸酯；破胶剂为过硫酸钠；降阻剂为聚丙烯酰胺乳液；PH控制剂为冰乙酸和碳酸氢钠的混合物。该压裂液具有良好的环保性、耐温耐压性、耐剪切性，破胶控制好，有效地降低压裂液对非常规油气层和裂缝的伤害，提高压裂改造的效果。

Description

一种页岩气新型环保压裂液
技术领域
 本发明涉及非常规油气田开采技术领域，特别涉及一种页岩气新型环保压裂液。
背景技术
 随着非常规油气田的勘探和开发，低渗透性、低压力、复杂敏感性储层越来越多。为了获得经济开采价值，必须对非常规储层进行压裂改造。特别是页岩气的开采，必须进行大型压裂才能达到经济开采。在压裂施工过程中，为了提高压裂效果，降低对储层的伤害，减小对环境的影响；对压裂液的性能要求有：环保无污染，清洁，干净，润滑性好，滤失量小，对被压裂储层无堵塞和无伤害，热稳定性能和剪切稳定性能好，配伍性好，无残渣，便于配制以及经济合理。
国内现状特点是：95％的压裂液采用滑溜水体系。但是目前所有的水基压裂液毫无例外的都有残渣。残渣会对地层及充填层造成严重堵塞，使其渗透率大幅度下降(其累计损害可达90%以上)，大大降低压裂的效果，特别是对于低压、低渗非常规油气层尤其突出，常常会造成压裂完全失效。在保证缝长、缝宽前提下，尽量减少压裂液对支撑裂缝和缝壁的基质伤害，发明一种新型环保压裂液，在降低储层伤害和环境污染、提高压裂效果背景下具有重要的意义。
发明内容
本发明提供一种页岩气新型环保压裂液。该压裂液具有良好的环保性、耐温性、耐压性、耐剪切性，对页岩气的油气层的破胶控制好，有效地降低压裂液对非常规油气层和裂缝的伤害，提高压裂改造的效果。
本发明的技术方案为：
 一种页岩气新型环保压裂液，由以下物质混合制备而成：
氯化物金属类盐 0.3%~1% ， 瓜胶 0.2%~1% ， 交联剂 0.03%~0.15%，
破胶剂 0.03%~0.1%， 降阻剂 0.06%~0.12%， PH控制剂 0.02%~0.1%， 其余为水。
所述的氯化物金属类盐为氯化钾。
所述的交联剂为硼砂或三乙醇胺硼酸酯。
所述的破胶剂为过硫酸钠。
所述的降阻剂为聚丙烯酰胺乳液。
所述的PH控制剂为冰乙酸和碳酸氢钠的混合物，使压裂液最终PH为5~6。
 本发明的有益效果在于：具有良好的环保性、耐温性、耐压性、耐剪切性，对非常规油气层的破胶控制好，有效地降低压裂液对非常规油层和裂缝的伤害，提高压裂改造的效果。具有下面所述的显著特点。
 1、可用环境的PH在4.8 – 8之间。
 2、良好的耐温性能，耐温范围在28℃ - 183℃之间。
 3、良好的耐压性能，耐压范围在7MPa – 120MPa之间。
 4、良好的耐剪切性能，排量可达4.5 – 15m3/min。
 5、对油气层的破胶控制的好。
 6、初滤失速度小。
 7、提高低渗透油气藏的压裂改造效果。 
具体实施方式
下面结合实施例对本发明作进一步的详细说明。
实施例1：
该新型环保压裂液配制方法和过程：
在1000mL清水中加入3.0gKCl，缓慢搅拌并加入0.3g过硫酸钠。再称取2g瓜胶在搅拌状态下将其缓慢加入其中，随后再加入0.3g硼砂，6mL聚丙酰胺乳液，0.05g碳酸氢钠，0.15g冰乙酸。在整个过程中，通过不断搅拌使得各组分充分溶解，待溶液混合均匀后即制得所述环保压裂液。
 该实施例得到的这种页岩气新型环保压裂液适用于温度在120℃及以下的页岩气藏。
实施例2：
该新型环保压裂液配制方法和过程：
在1000mL清水中加入3.0gKCl，缓慢搅拌并加入0.4g过硫酸钠。再称取2g瓜胶在搅拌状态下将其缓慢加入其中，随后再加入0.4g三乙醇胺硼酸酯，10mL聚丙酰胺乳液，0.05g碳酸氢钠，0.15g冰乙酸。在整个过程中，通过不断搅拌使得各组分充分溶解，待溶液混合均匀后即制得所述环保压裂液。
 该实施例得到的这种页岩气新型环保压裂液适用于温度在120℃~135℃之间的页岩气藏。
实施例3：
该新型环保压裂液配制方法和过程：
在1000mL清水中加入3.0gKCl，缓慢搅拌并加入0.4g过硫酸钠。再称取2g瓜胶在搅拌状态下将其缓慢加入其中，随后再加入0.4g硼砂，12mL聚丙酰胺乳液，0.05g碳酸氢钠，0.15g冰乙酸。在整个过程中，通过不断搅拌使得各组分充分溶解，待溶液混合均匀后即制得所述环保压裂液。
 该实施例得到的这种页岩气新型环保压裂液适用于温度在135℃~155℃之间的页岩气藏。
实施例4：
该新型环保压裂液配制方法和过程：
在1000mL清水中加入3.0gKCl，缓慢搅拌并加入0.2g过硫酸钠。再称取3g瓜胶在搅拌状态下将其缓慢加入其中，随后再加入0.6g三乙醇胺硼酸酯，20mL聚丙酰胺乳液，0.05g碳酸氢钠，0.15g冰乙酸。在整个过程中，通过不断搅拌使得各组分充分溶解，待溶液混合均匀后即制得所述环保压裂液。
 该实施例得到的这种页岩气新型环保压裂液适用于温度在155℃~183℃之间的页岩气藏。

Claims (6)

1.一种页岩气新型环保压裂液，其特征在于：由以下物质混合制备而成：
 氯化物金属类盐， 0.3%~1%
瓜胶， 0.2%~1%
交联剂， 0.03%~0.15%
破胶剂， 0.03%~0.1%
降阻剂， 0.06%~0.12%
PH控制剂， 0.02%~0.1%
其余为水，各组分重量百分比之和为百分之百。
2.根据权利要求1所述的一种页岩气新型环保压裂液，其特征在于：所述的氯化物金属类盐为氯化钾。
3.根据权利要求1所述的一种页岩气新型环保压裂液，其特征在于：所述的交联剂为硼砂或三乙醇胺硼酸酯。
4.根据权利要求1所述的一种页岩气新型环保压裂液，其特征在于：所述的破胶剂为过硫酸钠。
5.根据权利要求1所述的一种页岩气新型环保压裂液，其特征在于：所述的降阻剂为聚丙烯酰胺乳液。
6.根据权利要求1所述的一种页岩气新型环保压裂液，其特征在于：所述的PH控制剂为冰乙酸和碳酸氢钠的混合物，使压裂液最终PH为5~6。
CN201410731391.4A 2014-12-05 2014-12-05 一种页岩气新型环保压裂液 Pending CN104449652A (zh)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106467736A (zh) * 2015-08-21 2017-03-01 中国石油化工股份有限公司 一种用于页岩压裂的压裂液及其制备方法
CN110437815A (zh) * 2019-07-26 2019-11-12 大港油田集团有限责任公司 海水基压裂液及其制备方法
CN110699060A (zh) * 2018-07-09 2020-01-17 中国石油天然气股份有限公司 压裂液及其制备方法
CN115353871A (zh) * 2022-09-02 2022-11-18 西南石油大学 一种低摩阻饱和甲酸钾加重压裂液

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1403529A (zh) * 2001-08-24 2003-03-19 中国石油天然气股份有限公司 油井用热压裂液配方及配制工艺
CN102996107A (zh) * 2012-12-07 2013-03-27 东营盛世石油科技有限责任公司 一种基于液体聚合物在线连续配制的压裂方法
CN103881691A (zh) * 2014-03-14 2014-06-25 湖北菲特沃尔科技有限公司 环保型压裂液及其返排液的配制和循环利用方法

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1403529A (zh) * 2001-08-24 2003-03-19 中国石油天然气股份有限公司 油井用热压裂液配方及配制工艺
CN102996107A (zh) * 2012-12-07 2013-03-27 东营盛世石油科技有限责任公司 一种基于液体聚合物在线连续配制的压裂方法
CN103881691A (zh) * 2014-03-14 2014-06-25 湖北菲特沃尔科技有限公司 环保型压裂液及其返排液的配制和循环利用方法

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106467736A (zh) * 2015-08-21 2017-03-01 中国石油化工股份有限公司 一种用于页岩压裂的压裂液及其制备方法
CN110699060A (zh) * 2018-07-09 2020-01-17 中国石油天然气股份有限公司 压裂液及其制备方法
CN110437815A (zh) * 2019-07-26 2019-11-12 大港油田集团有限责任公司 海水基压裂液及其制备方法
CN115353871A (zh) * 2022-09-02 2022-11-18 西南石油大学 一种低摩阻饱和甲酸钾加重压裂液

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