CN110439527B - 一种碳酸盐岩储层自降滤酸压方法 - Google Patents
一种碳酸盐岩储层自降滤酸压方法 Download PDFInfo
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- CN110439527B CN110439527B CN201910650677.2A CN201910650677A CN110439527B CN 110439527 B CN110439527 B CN 110439527B CN 201910650677 A CN201910650677 A CN 201910650677A CN 110439527 B CN110439527 B CN 110439527B
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Classifications
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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
- C09K8/72—Eroding chemicals, e.g. acids
- C09K8/74—Eroding chemicals, e.g. acids combined with additives added for specific purposes
- C09K8/76—Eroding chemicals, e.g. acids combined with additives added for specific purposes for preventing or reducing fluid loss
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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
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- 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
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- C—CHEMISTRY; METALLURGY
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- 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
- C09K8/72—Eroding chemicals, e.g. acids
- C09K8/725—Compositions containing polymers
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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
- C09K8/72—Eroding chemicals, e.g. acids
- C09K8/74—Eroding chemicals, e.g. acids combined with additives added for specific purposes
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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
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- 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
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- 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
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- E—FIXED CONSTRUCTIONS
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- 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
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- C—CHEMISTRY; METALLURGY
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- C09K2208/00—Aspects relating to compositions of drilling or well treatment fluids
- C09K2208/30—Viscoelastic surfactants [VES]
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
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- C09K2208/00—Aspects relating to compositions of drilling or well treatment fluids
- C09K2208/32—Anticorrosion additives
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- General Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Mining & Mineral Resources (AREA)
- General Chemical & Material Sciences (AREA)
- Geology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Colloid Chemistry (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
本发明涉及一种碳酸盐岩储层自降滤酸压方法,包括:(1)计算改造储层的破裂压力和裂缝延伸压力;(2)在高于地层破裂压力下向地层注入A剂,使地层产生裂缝;(3)在高于地层破裂压力下向地层注入B剂,使其延伸裂缝、沟通天然缝网;(4)在高于延伸压力、低于破裂压力下向地层泵入高刻蚀能力的酸液体系C剂,提高裂缝导流能力;(5)在低于地层破裂压力下注入顶替液D剂,将井筒中的酸液顶入地层;(6)关井、返排。所述A剂为胶凝酸或VES酸,B剂为自降滤胶凝酸或自降滤VES酸,C剂为闭合酸,D剂为顶替液。本发明利用自降滤体系在裂缝壁面形成沉淀型固体滤饼,进行暂堵降滤,工艺简单、易注入,降滤剂易分散、返排,且安全环保。
Description
技术领域
本发明涉及油气田开发过程中使用的暂堵降滤酸压工艺,特别是涉及一种碳酸盐岩储层自降滤酸压方法。
背景技术
酸压是碳酸盐岩储层增产的主要措施之一,而酸压过程中往往存在酸液沿酸蚀裂缝漏失的现象,影响沿主裂缝的延伸,酸压改造作用范围有限,导致酸压施工效果不佳甚至失败。因此,为了提高酸压作业效率,增加主裂缝延伸长度,需要控制酸液滤失,实现裂缝深部刻蚀。为了解决这一问题,应用最普遍的措施就是在施工过程中引入降滤剂或增加酸液粘度达到酸液降滤的效果。
近年来,我国很多油田产量下降,常规的一次、二次采油后,仍有大量剩余油未采出,因此对于老油田的挖潜仍有大量工作要做。在能源日趋紧张的情况下,增产作业已成为石油开采研究的重大课题。对于碳酸盐岩储层而言,增产改造措施对象越来越复杂,受部分深井、超深井深部地层的高温环境影响,改造目标从低渗、单井发展到中、高渗和整体油田。针对这一问题,为了防止酸液漏失,提高增产效率,增产措施中酸压降滤的要求就越来越高。
国内外对降滤失方法开展了大量研究,常用的有液体稠化降滤(纤维素及其衍生物、腐殖酸及其衍生物、改性淀粉、聚丙烯酰胺)和固相材料降滤(树脂类、纤维丝、硅粉)。“一种有机交联酸体系及其制备方法与应用(CN109575905A)”、“一种阳离子型胶凝酸稠化剂及其制备方法”(CN106318369A)利用酸液増粘达到降滤的目的;“一种嵌入式高承压封堵剂 (CN108300435A)、“一种纤维素醚制备方法及由该方法获得的纤维素醚”(CN105111317A) 利用纤维达到暂堵降滤目的;“全油基钻井液用降滤失剂及制备方法”(CN104610936A)、“一种钻井液用降滤失剂及其制备方法”(CN102766240A)利用腐殖酸及其衍生物进行暂堵降滤;“一种两性酚醛树脂高温钻井液降滤失剂及其制备方法”(CN105154035A)、“一种压裂液纳米降滤剂及其合成方法”(CN103642482A)利用树脂类颗粒进行暂堵降滤。
以上降滤方法已发展成熟且应用广泛,但均有一定的局限性。液体稠化降滤主要是利用交联聚合物,稠化的酸液存在注入困难、破胶后残渣多的问题,固相降滤最大的问题就是注入性差、对注入设备磨损严重,难以实现有效降滤,且以上降滤方法均对储层及井筒条件有一定的限制。
发明内容
本发明的目的在于提供一种碳酸盐岩储层自降滤酸压方法,该方法原理可靠,操作简便,是一种利用自降滤体系在碳酸盐岩储层条件下,在裂缝壁面形成沉淀型固体滤饼,进行暂堵降滤的酸压工艺。该方法工艺简单、成本低、耐温、耐盐、易注入,施工完成后暂堵性降滤剂易分散、返排,既具有良好的降滤失性能,同时又不会对地层造成严重污染,是一种安全、环保、简单的自降滤工艺。
为达到以上技术目的,本发明采用以下技术方案。
本发明利用液相自降滤酸液体系在储层条件下发生化学、物理作用形成固相分散微粒,大量形成的分散微粒聚集,在酸压过程中达到暂堵降滤、转向酸化的作用,最终多角度沟通地层实现有效酸化的目的。由于本发明向地层注入的是液体,相对于聚合物而言,具有更好的耐温耐盐性能和注入性能,相对于固相暂堵剂而言,具有易注入性、有效降滤、减少设备管线磨损的效果。同时具有施工后分散微粒易返排,对地层低伤害的有益效果。
一种碳酸盐岩储层自降滤酸压方法,依次包括以下步骤:
(1)根据储层改造需求和储层地质资料,确定需要酸压改造的储层层位(简称改造储层),计算改造储层的破裂压力Pα和改造储层的裂缝延伸压力PF,过程如下:
查阅作业井所在油气藏破裂压力梯度αF(MPa/m),井深H(m)×αF即为改造储层的破裂压力Pα(李颖川,采油工程,石油工业出版社,2009年2月);查阅作业井层位其他已作业井压裂施工时的参数,得知地面瞬时停泵压力PS,计算作业井压裂施工的静液柱压力PH,PS与PH之和即为改造储层的裂缝延伸压力PF(蒋廷学.裂缝延伸压力的现场确定方法研究及应用[J].石油钻采工艺,1996(05):91-94+109);
(2)在高于地层破裂压力下利用高压水力泵车向地层注入A剂,使地层产生裂缝,待产生的裂缝达到设计要求的裂缝几何尺寸后停泵;
(3)在高于地层破裂压力下向地层注入B剂,使其延伸裂缝、沟通天然缝网;
(4)在高于延伸压力、低于破裂压力下向地层泵入高刻蚀能力的酸液体系C剂,提高裂缝导流能力;
(5)在低于地层破裂压力下注入顶替液D剂,将井筒中的酸液顶入地层;
(6)关井30-60min;
(7)开井返排。
本发明所述A剂为胶凝酸或VES酸,其作用是在酸压过程中对地层造缝。所述胶凝酸由以下组分按重量百分比组成:5%-15%HCl+0.3-0.5%胶凝剂+0.5-2%缓蚀剂+0.5-2%铁离子稳定剂+0.5-2%助排剂,其余为水。所述VES酸由以下组分按重量百分比组成:5-15%HCl+3-10%VES+0.5-2%缓蚀剂+0.5-2%铁离子稳定剂+0.5-2%助排剂,其余为水。
本发明所述B剂为自降滤胶凝酸或自降滤VES酸,其作用是在酸压过程中延伸裂缝,降低酸液滤失,提高酸液的作用效率、实现有效布酸。其中自降滤胶凝酸由以下组分按重量百分比组成:15%-20%HCl+5-20%自降滤剂+0.3-1%胶凝剂+0.1-1%分散剂+0.5-2%缓蚀剂 +0.5-2%铁离子稳定剂+0.5-2%助排剂,其余为水。其中自降滤VES酸由以下组分按重量百分比组成:15%-20%HCl+5-20%自降滤剂+5-10%VES+0.1-1%分散剂+0.5-2%缓蚀剂+0.5-2%铁离子稳定剂+0.5-2%助排剂,其余为水。
本发明所述C剂为闭合酸,其作用是在裂缝闭合后在近井地带的裂缝壁面刻蚀出高导流的流通通道。所述闭合酸由以下组分按重量百分比组成:15%-20%HCl+0-0.2%胶凝剂 +0-5%VES+0.5-2%缓蚀剂+0.5-2%铁离子稳定剂+0.5-2%助排剂。
本发明所述D剂为顶替液,其作用是将C剂完全驱替进地层,降低酸液对管柱设备的腐蚀。顶替液为1-3wt%的NH4Cl水溶液或0.1-1wt%的粘土稳定剂水溶液。
所述胶凝剂为聚丙烯酰胺及其衍生物、纤维素及其衍生物的一种或多种,可选的试剂有:阴离子聚丙烯酰胺、阳离子聚丙烯酰胺、非离子聚丙烯酰胺、蟥甲基化聚丙烯酰胺、胺甲基化聚丙烯酰胺、部分水解聚丙烯酰胺、甲叉基聚丙烯酰胺、羧甲基纤维素钠盐、羟乙基纤维素、羟丙基纤维素、羧甲基羟乙基纤维素。
所述VES为芥酸酰胺丙基羟基磺基甜菜碱、芥酸酰胺甜菜碱、椰油酰胺丙基甜菜碱、十八烷基三甲基氯化铵、十八烷基二甲基甜菜碱或其混合物。
所述自降滤剂为氢氟酸(HF)、氟硼酸(HBF4)、硫酸铵((NH4)2SO4)、氟化铵(NH4F) 或其混合物。自降滤剂是本发明的技术关键,是提高酸压效果的有力保障,其作用机理是酸液体系注入地层后自降滤剂与酸溶矿物的钙、镁离子发生化学反应,生成分散型固相微粒凝胶,在施工过程中实现有效降滤、施工完成后易随返排液排出地面。
所述缓蚀剂为甲基炔醇、甲基戊炔醇、二乙烯三胺、丁炔乙醇、六亚甲基四胺、油酸、油酸咪唑啉或其混合物。
所述铁离子稳定剂为乙二胺四乙酸、柠檬酸、氮川三乙酸、L-谷氨酸、异抗坏血酸或其混合物。
所述助排剂为聚氧乙烯醚、壬基酚聚氧乙烯醚、氟碳表面活性剂或其混合物。
所述分散剂为马来酸-丙烯酸共聚物、聚马来酸、羟基亚乙基二膦酸(HEDP)、氨基三甲叉膦酸(ATMP)、二乙烯三胺五甲叉膦酸(DTPMP)、三聚磷酸钠(Na5P3O10)或其混合物。
所述粘土稳定剂为2,3环氧丙基三甲基氯化铵、γ-氨丙基三乙氧基甲硅烷、聚二甲基二烯丙基氯化铵或其混合物。
与现有技术相比,本发明具有以下有益效果:
与常规降滤酸压相比,不用向地层注入固相降滤剂,而是向地层注入全液相的自降滤酸液体系,该自降滤酸液体系在地面及注入过程中是全液相,进入储层后酸液体系中的自降滤剂与储层矿物、流体、酸反应物再反应生成固相微粒凝胶,实现酸液的有效降滤、有效利用,有效沟通更多的天然裂缝网络,增加远井区域的渗透面积。本发明可有效解决目前现有降滤方法施工注入困难、耐温耐盐性差、不易降解返排、易造成砂堵等问题,实现对碳酸盐岩储层的有效酸压降滤,提高改造效果。本发明所涉及的方法和施工步骤简单方便,且成本低廉,无需额外增加配套装置,具有广阔的应用前景。
具体实施方式
下面根据实例进一步说明本发明,以便于本技术领域的技术人员理解本发明。但应该清楚,本发明不限于具体实施方式的范围,对本技术领域的普通技术人员来讲,只要各种变化在所附的权利要求限定和确定的本发明的精神和范围内,均在保护之列。
实施例1:
以B油田H井工程改造为实施对象,利用自降滤酸压工艺进行改造。储层改造前先配置施工所需作业液体,胶凝酸A1剂,自降滤胶凝酸B1剂,闭合酸C1剂,顶替液D1剂。
A1剂:15%HCl+0.3%蟥甲基化聚丙烯酰胺+0.8%油酸咪唑啉+0.2%丁炔乙醇+0.5%乙二胺四乙酸+0.5%柠檬酸+1%氟碳表面活性剂+0.5%聚氧乙烯醚,其余为水。
每100g剂:
35%HCl加入42.9g,0.3g蟥甲基化聚丙烯酰胺,0.8g油酸咪唑啉,0.2g丁炔乙醇,0.5g 乙二胺四乙酸,0.5g柠檬酸,1g氟碳表面活性剂,0.5g聚氧乙烯醚,53.3g水。
B1剂:20%HCl+5%HF+5%硫酸铵+0.3%蟥甲基化聚丙烯酰胺+0.3%三聚磷酸钠+0.1%聚马来酸+1.2%油酸咪唑啉+0.3%丁炔乙醇+1%乙二胺四乙酸+0.5%柠檬酸+1%氟碳表面活性剂 +0.5%聚氧乙烯醚,其余为水。
每100g剂:
35%HCl加入57.2g,40%HF加入12.5g,5g硫酸铵,0.3g蟥甲基化聚丙烯酰胺,0.3g三聚磷酸钠,0.1g聚马来酸,1.2g油酸咪唑啉,0.3g丁炔乙醇,1g乙二胺四乙酸,0.5g柠檬酸, 1g氟碳表面活性剂,0.5g聚氧乙烯醚,20.1g水。
C1剂:20%HCl+1.5%油酸咪唑啉+0.5%丁炔乙醇+1.5%乙二胺四乙酸+0.5%柠檬酸+0.8%氟碳表面活性剂+0.2%聚氧乙烯醚,其余为水。
每100g剂:
35%HCl加入57.2g,1.5g油酸咪唑啉,0.5g丁炔乙醇,1.5g乙二胺四乙酸,0.5g柠檬酸, 0.8g氟碳表面活性剂,0.2g聚氧乙烯醚,37.8g水。
D1剂:1%NH4Cl,其余为水。
每100g剂:
1g NH4Cl,99g水。
步骤一:H井为一口采气井,岩性为碳酸盐岩,改造层段井深3250-3390m。该井储层破裂压力梯度αF(MPa/m)为0.02MPa/m,该井破裂压力Pα为(3250+3390)/2×0.02=66.4MPa。该井的静液柱压力为PH为35.1MPa,地面地面瞬时停泵压力PS为21MPa,延伸压力PF为 56.1MPa;
步骤二:在68-73MPa下注入胶凝酸A1剂35000Kg停泵;
步骤三:在68-80MPa下注入自降滤胶凝酸B1剂120000Kg停泵;
步骤四:在58-63MPa下注入闭合酸C1剂50000Kg停泵;
步骤五:在50-60MPa下注入顶替液D1剂15000Kg停泵;
步骤六:关井45min;
步骤七:关井返排。
施工过程中记录B油田的H井自降滤酸压工艺过程注液的油压变化,在相同排出排量 4.9m3/min下,注自降滤胶凝酸B过程中油压升高3.6MPa,这说明自降滤体系在没有加入降滤剂的条件下,在酸压过程中实现了较好的降滤作用,减少了酸液滤失消耗,提高酸液的有效性,有效提高酸液的转向作用。施工后生产的自降滤生成物能快速随残酸排出,排除的自降滤生成物为分散状微粒,而非固相胶结块,这有利于自降滤体系的排除,对地层不会造成严重伤害。通过实施例1的现场施工验证说明本发明能有效降低碳酸盐岩储层酸压过程中的酸液滤失,提高酸液的有效作用率,降低酸压施工的资金消耗,且注液相对直接加入降滤剂的酸压更容易、对设备伤害小。
实施例2:
以B油田M井工程改造为实施对象,利用自降滤酸压工艺进行改造。储层改造前先配置施工所需作业液体,VES酸A2剂,自降滤VES酸B2剂,闭合酸C2剂,顶替液D2剂。
A2剂:5%HCl+5%芥酸酰胺丙基羟基磺基甜菜碱+0.3%油酸咪唑啉+0.1%二乙烯三胺 +0.1%甲基炔醇+0.2%柠檬酸+0.3%L-谷氨酸+1%氟碳表面活性剂,其余为水。
每100g剂:
35%HCl加入14.3g,5g芥酸酰胺丙基羟基磺基甜菜碱,0.3g油酸咪唑啉,0.1g二乙烯三胺,0.1g甲基炔醇,0.2g柠檬酸,0.3gL-谷氨酸,1g氟碳表面活性剂,78.7g水。
B2剂:18%HCl+5%HF+5%NH4F+5%硫酸铵+8%芥酸酰胺丙基羟基磺基甜菜碱+0.5% HEDP+0.1%聚马来酸-丙烯酸共聚物+1%油酸咪唑啉+0.3%二乙烯三胺+0.2%甲基炔醇+0.5%柠檬酸+1%L-谷氨酸+1%氟碳表面活性剂,其余为水。
每100g剂:
35%HCl加入51.5g,40%HF加入12.5g,5g NH4F,5g硫酸铵,8g芥酸酰胺丙基羟基磺基甜菜碱,0.5g HEDP,0.1g聚马来酸-丙烯酸共聚物,1g油酸咪唑啉,0.3g二乙烯三胺,0.2g 甲基炔醇,0.5g柠檬酸,1g L-谷氨酸,1g氟碳表面活性剂,13.4g水。
C2剂:20%HCl+3%芥酸酰胺丙基羟基磺基甜菜碱+1.2%油酸咪唑啉+0.4%二乙烯三胺 +0.4%甲基炔醇+0.5%柠檬酸+1.5%L-谷氨酸+1%氟碳表面活性剂,其余为水。
每100g剂:
35%HCl加入57.2g,3g芥酸酰胺丙基羟基磺基甜菜碱,1.2g油酸咪唑啉,0.4g二乙烯三胺,0.4g甲基炔醇,0.5g柠檬酸,1.5g L-谷氨酸,1g氟碳表面活性剂,34.8g水。
D2剂:0.5%聚二甲基二烯丙基氯化铵,其余为水。
每100g剂:
0.5g聚二甲基二烯丙基氯化铵,99.5g水。
步骤一:M井为一口采气井,岩性为碳酸盐岩,改造层段井深3218-3355m。该井储层破裂压力梯度αF(MPa/m)为0.02MPa/m,该井破裂压力Pα为(3218+3355)/2×0.02=65.73MPa。该井的静液柱压力为PH34.5MPa,地面地面瞬时停泵压力PS为21MPa,延伸压力PF为 55.5MPa;
步骤二:在66-70MPa下注入胶凝酸A2剂30000Kg停泵;
步骤三:在66-75MPa下注入自降滤胶凝酸B2剂150000Kg停泵;
步骤四:在56-60MPa下注入闭合酸C2剂60000Kg停泵;
步骤五:在40-50MPa下注入顶替液D2剂12000Kg停泵;
步骤六:关井60min;
步骤七:关井返排。
施工过程中记录B油田的M井自降滤酸压工艺过程注液的油压变化,在相同排出排量 4.8m3/min下,注自降滤胶凝酸B过程中油压升高4.5MPa,这说明自降滤体系在没有加入降滤剂的条件下,在酸压过程中实现了较好的降滤作用,减少了酸液滤失消耗,提高酸液的有效性,有效提高酸液的转向作用。施工后生产的自降滤生成物能快速随残酸排出,排除的自降滤生成物为分散状微粒,而非固相胶结块,这有利于自降滤体系的排除,对地层不会造成严重伤害。通过实施例2的现场施工验证说明本发明能有效降低碳酸盐岩储层酸压过程中的酸液滤失,提高酸液的有效作用率,降低酸压施工的资金消耗,且注液相对直接加入降滤剂的酸压更容易、对设备伤害小。
实施例3:
以B油田Q井工程改造为实施对象,利用自降滤酸压工艺进行改造。储层改造前先配置施工所需作业液体,胶凝酸A3剂,自降滤VES酸B3剂,闭合酸C3剂,顶替液D3剂。
A3剂:10%HCl+0.5%羧甲基羟乙基纤维素+0.6%油酸咪唑啉+0.2%油酸+0.2%六压甲基四胺+0.3%氮川三乙酸+0.7%L-谷氨酸+1%氟碳表面活性剂,其余为水。
每100g剂:
35%HCl加入28.6g,0.5g羧甲基羟乙基纤维素,0.6g油酸咪唑啉,0.2g油酸,0.2g六压甲基四胺,0.3g氮川三乙酸,0.7g L-谷氨酸,1g氟碳表面活性剂,67.9g水。
B3剂:15%HCl+3%HF+5%硫酸铵+3%十八烷基二甲基甜菜碱+3%芥酸酰胺丙基羟基磺基甜菜碱+0.3%HEDP+0.1%聚马来酸+0.2%二乙烯三胺五甲叉膦酸+0.8%油酸咪唑啉+0.2%油酸 +0.2%六压甲基四胺+0.5%乙二胺四乙酸+0.3%柠檬酸+0.4%L-谷氨酸+1.2%氟碳表面活性剂,其余为水。
每100g剂:
35%HCl加入42.9g,40%HF加入7.5g,5g硫酸铵,3g十八烷基二甲基甜菜碱,3g芥酸酰胺丙基羟基磺基甜菜碱,0.3g HEDP,0.1g聚马来酸,0.2g二乙烯三胺五甲叉膦酸,0.8g油酸咪唑啉,0.2g油酸,0.2g六压甲基四胺,0.5g乙二胺四乙酸,0.3g柠檬酸,0.4g L-谷氨酸,1.2g氟碳表面活性剂,34.4g水。
C3剂:18%HCl+0.1%羧甲基羟乙基纤维素+1%油酸咪唑啉+0.2%油酸+0.3%六压甲基四胺 +0.5%乙二胺四乙酸+0.5%柠檬酸+0.5%L-谷氨酸+1.5%氟碳表面活性剂,其余为水。
每100g剂:
35%HCl加入51.5g,0.1g羧甲基羟乙基纤维素,1g油酸咪唑啉,0.2g油酸,0.3g六压甲基四胺,0.5g乙二胺四乙酸,0.5g柠檬酸,0.5g L-谷氨酸,1.5g氟碳表面活性剂,43.9g水。
D3剂:2%NH4Cl,其余为水。
每100g剂:
2g NH4Cl,98g水。
步骤一:Q井为一口采气井,岩性为碳酸盐岩,改造层段井深3280-3380m。该井储层破裂压力梯度αF(MPa/m)为0.02MPa/m,该井破裂压力Pα为(3280+3380)/2×0.02=66.6MPa。该井的静液柱压力为PH34.9MPa,地面地面瞬时停泵压力PS为21MPa,延伸压力PF为55.9MPa;
步骤二:在67-75MPa下注入胶凝酸A3剂35000Kg停泵;
步骤三:在67-80MPa下注入自降滤VES酸B3剂150000Kg停泵;
步骤四:在50-65MPa下注入闭合酸C3剂60000Kg停泵;
步骤五:在40-50MPa下注入顶替液D3剂12000Kg停泵;
步骤六:关井45min;
步骤七:关井返排。
施工过程中记录B油田的Q井自降滤酸压工艺过程注液的油压变化,在相同排出排量 5.1m3/min下,注自降滤胶凝酸B过程中油压升高3.3MPa,这说明自降滤体系在没有加入降滤剂的条件下,在酸压过程中实现了较好的降滤作用,减少了酸液滤失消耗,提高酸液的有效性,有效提高酸液的转向作用。施工后生产的自降滤生成物能快速随残酸排出,排除的自降滤生成物为分散状微粒,而非固相胶结块,这有利于自降滤体系的排除,对地层不会造成严重伤害。通过实施例3的现场施工验证说明本发明能有效降低碳酸盐岩储层酸压过程中的酸液滤失,提高酸液的有效作用率,降低酸压施工的资金消耗,且注液相对直接加入降滤剂的酸压更容易、对设备伤害小。
Claims (2)
1.一种碳酸盐岩储层自降滤酸压方法,依次包括以下步骤:
(1)根据储层改造需求和储层地质资料,确定需要酸压改造的储层层位,计算改造储层的破裂压力Pα和改造储层的裂缝延伸压力PF;
(2)在高于地层破裂压力下利用高压水力泵车向地层注入A剂,使地层产生裂缝,待产生的裂缝达到设计要求的裂缝几何尺寸后停泵;所述A剂为胶凝酸或VES酸,所述胶凝酸由以下组分按重量百分比组成:5%-15%HCl+0.3-0.5%胶凝剂+0.5-2%缓蚀剂+0.5-2%铁离子稳定剂+0.5-2%助排剂,其余为水;所述VES酸由以下组分按重量百分比组成:
5-15%HCl+3-10%VES+0.5-2%缓蚀剂+0.5-2%铁离子稳定剂+0.5-2%助排剂,其余为水;
(3)在高于地层破裂压力下向地层注入B剂,使其延伸裂缝、沟通天然缝网;所述B剂为自降滤胶凝酸或自降滤VES酸,所述自降滤胶凝酸由以下组分按重量百分比组成:
15%-20%HCl+5-20%自降滤剂+0.3-1%胶凝剂+0.1-1%分散剂+0.5-2%缓蚀剂+0.5-2%铁离子稳定剂+0.5-2%助排剂,其余为水;所述自降滤VES酸由以下组分按重量百分比组成:
15%-20%HCl+5-20%自降滤剂+5-10%VES+0.1-1%分散剂+0.5-2%缓蚀剂+0.5-2%铁离子稳定剂+0.5-2%助排剂,其余为水;
(4)在高于延伸压力、低于破裂压力下向地层泵入高刻蚀能力的酸液体系C剂,提高裂缝导流能力;所述C剂为闭合酸,所述闭合酸由以下组分按重量百分比组成:
15%-20%HCl+0-0.2%胶凝剂+0-5%VES+0.5-2%缓蚀剂+0.5-2%铁离子稳定剂+0.5-2%助排剂;
(5)在低于地层破裂压力下注入顶替液D剂,将井筒中的酸液顶入地层;所述D剂为顶替液,所述顶替液为1-3wt%的NH4Cl水溶液或0.1-1wt%的粘土稳定剂水溶液,所述粘土稳定剂为2,3环氧丙基三甲基氯化铵、γ-氨丙基三乙氧基甲硅烷、聚二甲基二烯丙基氯化铵或其混合物;
(6)关井30-60min;
(7)开井返排;
所述胶凝剂为聚丙烯酰胺及其衍生物、纤维素及其衍生物的一种或多种,所述聚丙烯酰胺及其衍生物为阴离子聚丙烯酰胺、阳离子聚丙烯酰胺、非离子聚丙烯酰胺、蟥甲基化聚丙烯酰胺、胺甲基化聚丙烯酰胺、部分水解聚丙烯酰胺或甲叉基聚丙烯酰胺,所述纤维素及其衍生物为羧甲基纤维素钠盐、羟乙基纤维素、羟丙基纤维素或羧甲基羟乙基纤维素;
所述VES为芥酸酰胺丙基羟基磺基甜菜碱、芥酸酰胺甜菜碱、椰油酰胺丙基甜菜碱、十八烷基三甲基氯化铵、十八烷基二甲基甜菜碱或其混合物;
所述自降滤剂为氢氟酸、氟硼酸、硫酸铵、氟化铵或其混合物;
所述缓蚀剂为甲基炔醇、甲基戊炔醇、二乙烯三胺、丁炔乙醇、六亚甲基四胺、油酸、油酸咪唑啉或其混合物;
所述铁离子稳定剂为乙二胺四乙酸、柠檬酸、氮川三乙酸、L-谷氨酸、异抗坏血酸或其混合物;
所述助排剂为聚氧乙烯醚、壬基酚聚氧乙烯醚、氟碳表面活性剂或其混合物;
所述分散剂为马来酸-丙烯酸共聚物、聚马来酸、羟基亚乙基二膦酸、氨基三甲叉膦酸、二乙烯三胺五甲叉膦酸、三聚磷酸钠或其混合物。
2.如权利要求1所述的一种碳酸盐岩储层自降滤酸压方法,其特征在于,所述步骤(1)中计算改造储层的破裂压力Pα和改造储层的裂缝延伸压力PF,过程如下:查阅作业井所在油气藏破裂压力梯度αF,井深H×αF即为改造储层的破裂压力Pα;查阅作业井层位其他已作业井压裂施工时的参数,得知地面瞬时停泵压力PS,作业井压裂施工的静液柱压力为PH,PS与PH之和即为改造储层的裂缝延伸压力PF。
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WO2016118150A1 (en) * | 2015-01-23 | 2016-07-28 | Halliburton Energy Services, Inc. | Pressure relief valve set point systems |
US10988674B2 (en) * | 2015-05-01 | 2021-04-27 | Halliburton Energy Services, Inc. | Chelating etching agent stimulation and proppant stabilization of low-permeability subterranean formations |
CN105838348B (zh) * | 2016-04-25 | 2018-08-28 | 深圳市百勤石油技术有限公司 | 一种用于油气藏酸压增产措施的胶凝酸 |
CN105971579B (zh) * | 2016-07-07 | 2018-05-08 | 赵立强 | 一种相变水力压裂工艺 |
US10100245B1 (en) * | 2017-05-15 | 2018-10-16 | Saudi Arabian Oil Company | Enhancing acid fracture conductivity |
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CN108708704B (zh) * | 2018-05-15 | 2020-03-31 | 重庆交通大学 | 一种煤层气储层降低滤失的方法 |
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