吉林油田保护油气层射孔液体系研究
发布时间：2018-11-23 15:27
【摘要】：射孔液作为射孔作业中必不可少的入井工作液,在射孔作业中发挥了巨大的作用。但是,作为外来的入井流体,由于含有固相颗粒、滤液与储层不配伍等原因,射孔液体系会对储层带来严重损害,这些损害会降低地层的渗透率,大大降低储层的产能。考虑到射孔液体系对储层的损害,在研发射孔液体系的过程中就必须紧密联系油气层保护的相关技术,针对研究区块的储层特点优选射孔液体系中的各类添加剂,使射孔液体系达到低伤害甚至无伤害的要求。本课题研究区块为吉林油田伊通、王府、德惠、让字井四个区块,具有致密、高温的特点,这也对射孔液体系的研发提出了更高的要求,如何在高温条件下保持射孔液体系的性能,如何在加入少量的固相颗粒甚至是不加入固相颗粒的条件下使射孔液体系的密度达到一定的要求,这些都是本课题研究面临的重要难题。本文通过收集大量国内外射孔液体系资料,各类添加剂资料、研究区块储层的特征资料,以吉林油田伊通、王府、德惠、让字井四个区块作为研究对象,在对射孔液固相伤害以及液相伤害分析研究的基础上,采用理论调研和室内实验相结合的技术路线,进行了低伤害射孔液体系研究,并且对射孔液体系进行性能评价,研制出了保护吉林油田储层的射孔液体系。通过资料调研发现,要达到高密度射孔液的要求,一般采用加入少许固相颗粒的方法。但是,由于固相颗粒对储层伤害严重(尤其是类似于吉林油田的低渗储层),必须减少甚至是杜绝固相颗粒的加入。室内对加重剂的筛选试验提供了两条很好的思路,采用甲酸盐或者是卤盐作为基液的射孔液体系,既能达到一定的密度,而且由于两者均为可溶性盐类,不会对储层带来严重的固相损害。课题要求射孔液密度最高达到2.5g/cm3,而加重剂筛选试验的结果显示,卤盐密度最高达到2.4g/cm3,甲酸盐密度最高达到23 g/cm3,课题采用加入盐结晶抑制剂的办法很好的解决了问题,而且在适当的情况下加入微量的铁矿粉,也可以使射孔液体系的密度满足要求。在密度达到要求的基础上,对其他添加剂进行进一步的优选,确定采用GZN作为抗高温增粘剂,采用KCl作为粘土稳定剂,降滤失剂则选用SMP-Ⅱ+TEMP以及GJL-1+GJL-2+SMP-Ⅱ这两种复配降滤失剂,其中甲酸盐体系采用SMP-Ⅱ+TEMP作为降滤失剂,而卤盐体系则采用GJL-1+GJL-2+SMP-Ⅱ作为降滤失剂。表面活性剂则选用具有耐高温、耐盐、表面活性强的氟碳表面活性剂FX。在确定各类添加剂的基础上确定了两个射孔液体系：甲酸盐+KCl+SMP-Ⅱ +TEMP+GZN+FX的甲酸盐体系,以及卤盐+KCl+GJL-1+GJL-2+SMP-Ⅱ +GZN+FX的卤盐体系。课题要求射孔液最高抗温需达到185℃,在如此高温条件下,对油管、管线的腐蚀情况会加重,而且很多添加剂会因高温而降低性能甚至失效,课题研究中向射孔液体系中加入高温缓蚀剂JCI、HSJ-JH,抗氧剂Na2SO3,护胶剂GBH较好的解决了这一问题,通过室内射孔液评价试验证明,这些添加剂可以与体系很好的配伍,大大提升射孔液体系的抗温性能并减少体系对油管的腐蚀。通过对射孔液体系中各类添加剂的优选,对于不同密度、不同温度要求的两种射孔液体系都研发出了相应的配方。将各类配方进行射孔液体系性能评价,最终结论发现：各类射孔液体系均满足API滤失量≤16ml/30min、腐蚀速率≤0.076mm/a、岩心渗透率恢复值在95%以上的课题要求,可以很好的作用于吉林油田研究区块的现场生产中去。总之,该射孔液体系的研制成功有效地解决了吉林油田(具有低渗、高温的特点)难以找到低伤害、抗高温、高密度的射孔液的问题。而且,研发出的两种射孔液体系在温度达到185℃、密度达到2.5g/cm3时,仍然具有较好的性质,可作为吉林油田研究区块未来开发的技术储备。因此,两种射孔液体系可以较好的应用于吉林油田的四个研究区块中,具有不错的应用前景。
[Abstract]:As an essential working fluid in the perforating operation, the orifice liquid plays a great role in the perforation operation. However, as a foreign-in-in fluid, the injection-hole fluid system can cause serious damage to the reservoir due to the non-compatibility of the solid-phase particles, the filtrate and the reservoir, which can reduce the permeability of the formation and greatly reduce the production capacity of the reservoir. Considering the damage of the injection hole liquid system to the reservoir, the related technology of the oil and gas layer protection must be closely contacted during the development of the injection hole liquid system, and various additives in the injection hole liquid system are preferred for the reservoir characteristics of the research block, and the injection hole liquid system can meet the requirements of low harm and even no harm. The research area of this project is the four blocks of Yitong, Wangfu and Dehui in Jilin Oilfield, and has the characteristics of compact and high temperature. It also puts forward higher requirements for R & D of the injection hole liquid system, and how to keep the performance of the injection hole liquid system under high temperature conditions. How to make the density of the orifice liquid system meet a certain requirement under the condition that a small amount of solid phase particles are added and even the solid-phase particles are not added are the important problems facing the research of the subject. In this paper, by collecting a lot of data of the domestic and international injection hole liquid system and the data of various additives, the characteristic data of the reservoir of the block is studied, and the four blocks of the word well are used as the research object in Yitong, Wangfu and Dehui in Jilin Oilfield. On the basis of the research of the solid phase injury and the liquid phase damage analysis of the injection hole liquid, the research of the low-harm shooting-hole liquid system was carried out by the combination of the theoretical investigation and the indoor experiment, and the performance of the injection-hole liquid system was evaluated. The injection hole liquid system for protecting the reservoir of Jilin oilfield is developed. According to the data investigation, it is found that the method of adding a little solid phase particles is generally adopted in order to meet the requirement of high-density orifice liquid. However, due to the severe damage to the reservoir (especially the low-permeability reservoir similar to the Jilin oilfield), it is necessary to reduce or even eliminate the addition of solid-phase particles. The screening test of the weighting agent in the room provides two very good ideas, which can achieve a certain density by adopting a formic acid salt or a halide salt as a base liquid, and can not cause serious solid phase damage to the reservoir because the two are both soluble salts. The result of the screening test of the weighting agent is that the density of the halogen salt is up to 2.4g/ cm3, the density of the formate is up to 23 g/ cm3, and the problem is solved well by the method of adding the salt crystallization inhibitor. and a trace of iron ore powder is added in the appropriate condition, and the density of the injection hole liquid system can be met. on the basis of the requirement of the density, the other additives are further preferably selected, the GZN is used as the anti-high-temperature tackifier, KCl is used as the clay stabilizer, the SMP-II + TEMP and the GJL-1 + GJL-2 + SMP-II are selected as the filter loss agent, The formate system adopts SMP-II + TEMP as the filtrate reducer, and the halogen salt system adopts GJL-1 + GJL-2 + SMP-II as the filtrate reducer. the surface active agent is selected from the fluorocarbon surfactant FX with high temperature resistance, salt resistance and surface activity. On the basis of the determination of various additives, two solution systems were determined: formate + KCl + SMP-II + TEMP + GZN + FX formate system, and halite + KCl + GJL-1 + GJL-2 + SMP-II + GZN + FX brine system. The subject requires the maximum anti-temperature of the orifice liquid to reach 185.d egree. C., and under such high temperature conditions, the corrosion of the oil pipe and the pipeline can be increased, and the performance or even failure of many additives can be reduced due to the high temperature, and the high-temperature corrosion inhibitor JCI, HSJ-JH and the antioxidant Na2SO3 are added to the injection hole liquid system in the research of the subject. The glue-protecting agent (GBH) has a good solution to this problem, and it is proved that these additives can be compatible with the system, and the anti-temperature performance of the injection-hole liquid system can be greatly improved and the corrosion of the system to the oil pipe can be reduced. Through the optimization of various additives in the liquid-jet system, the corresponding formulations have been developed for two kinds of liquid-injection systems with different densities and different temperature requirements. The performance evaluation of various formulations was carried out, and the final conclusion was found that all kinds of orifice liquid systems met the requirements of the API fluid loss rate of 16ml/ 30min, the corrosion rate of 0.076mm/ a and the recovery value of the core permeability of more than 95%. and can be well applied to the field production of the Jilin oilfield research block. In conclusion, the successful development of the orifice liquid system effectively solves the problems of low-damage, high-temperature and high-density orifice liquid in Jilin Oilfield (which has the characteristics of low permeability and high temperature). In addition, when the temperature reaches 185.degree. C. and the density reaches 2.5g/ cm3, the developed two-shot liquid system still has good properties, and can be used as a technical reserve for the future development of the Jilin Oilfield Research Block. Therefore, the two orifice liquid system can be applied to the four research blocks in Jilin oilfield, and has good application prospect.
【学位授予单位】：长江大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TE257.1
本文编号：2351905
[Abstract]:As an essential working fluid in the perforating operation, the orifice liquid plays a great role in the perforation operation. However, as a foreign-in-in fluid, the injection-hole fluid system can cause serious damage to the reservoir due to the non-compatibility of the solid-phase particles, the filtrate and the reservoir, which can reduce the permeability of the formation and greatly reduce the production capacity of the reservoir. Considering the damage of the injection hole liquid system to the reservoir, the related technology of the oil and gas layer protection must be closely contacted during the development of the injection hole liquid system, and various additives in the injection hole liquid system are preferred for the reservoir characteristics of the research block, and the injection hole liquid system can meet the requirements of low harm and even no harm. The research area of this project is the four blocks of Yitong, Wangfu and Dehui in Jilin Oilfield, and has the characteristics of compact and high temperature. It also puts forward higher requirements for R & D of the injection hole liquid system, and how to keep the performance of the injection hole liquid system under high temperature conditions. How to make the density of the orifice liquid system meet a certain requirement under the condition that a small amount of solid phase particles are added and even the solid-phase particles are not added are the important problems facing the research of the subject. In this paper, by collecting a lot of data of the domestic and international injection hole liquid system and the data of various additives, the characteristic data of the reservoir of the block is studied, and the four blocks of the word well are used as the research object in Yitong, Wangfu and Dehui in Jilin Oilfield. On the basis of the research of the solid phase injury and the liquid phase damage analysis of the injection hole liquid, the research of the low-harm shooting-hole liquid system was carried out by the combination of the theoretical investigation and the indoor experiment, and the performance of the injection-hole liquid system was evaluated. The injection hole liquid system for protecting the reservoir of Jilin oilfield is developed. According to the data investigation, it is found that the method of adding a little solid phase particles is generally adopted in order to meet the requirement of high-density orifice liquid. However, due to the severe damage to the reservoir (especially the low-permeability reservoir similar to the Jilin oilfield), it is necessary to reduce or even eliminate the addition of solid-phase particles. The screening test of the weighting agent in the room provides two very good ideas, which can achieve a certain density by adopting a formic acid salt or a halide salt as a base liquid, and can not cause serious solid phase damage to the reservoir because the two are both soluble salts. The result of the screening test of the weighting agent is that the density of the halogen salt is up to 2.4g/ cm3, the density of the formate is up to 23 g/ cm3, and the problem is solved well by the method of adding the salt crystallization inhibitor. and a trace of iron ore powder is added in the appropriate condition, and the density of the injection hole liquid system can be met. on the basis of the requirement of the density, the other additives are further preferably selected, the GZN is used as the anti-high-temperature tackifier, KCl is used as the clay stabilizer, the SMP-II + TEMP and the GJL-1 + GJL-2 + SMP-II are selected as the filter loss agent, The formate system adopts SMP-II + TEMP as the filtrate reducer, and the halogen salt system adopts GJL-1 + GJL-2 + SMP-II as the filtrate reducer. the surface active agent is selected from the fluorocarbon surfactant FX with high temperature resistance, salt resistance and surface activity. On the basis of the determination of various additives, two solution systems were determined: formate + KCl + SMP-II + TEMP + GZN + FX formate system, and halite + KCl + GJL-1 + GJL-2 + SMP-II + GZN + FX brine system. The subject requires the maximum anti-temperature of the orifice liquid to reach 185.d egree. C., and under such high temperature conditions, the corrosion of the oil pipe and the pipeline can be increased, and the performance or even failure of many additives can be reduced due to the high temperature, and the high-temperature corrosion inhibitor JCI, HSJ-JH and the antioxidant Na2SO3 are added to the injection hole liquid system in the research of the subject. The glue-protecting agent (GBH) has a good solution to this problem, and it is proved that these additives can be compatible with the system, and the anti-temperature performance of the injection-hole liquid system can be greatly improved and the corrosion of the system to the oil pipe can be reduced. Through the optimization of various additives in the liquid-jet system, the corresponding formulations have been developed for two kinds of liquid-injection systems with different densities and different temperature requirements. The performance evaluation of various formulations was carried out, and the final conclusion was found that all kinds of orifice liquid systems met the requirements of the API fluid loss rate of 16ml/ 30min, the corrosion rate of 0.076mm/ a and the recovery value of the core permeability of more than 95%. and can be well applied to the field production of the Jilin oilfield research block. In conclusion, the successful development of the orifice liquid system effectively solves the problems of low-damage, high-temperature and high-density orifice liquid in Jilin Oilfield (which has the characteristics of low permeability and high temperature). In addition, when the temperature reaches 185.degree. C. and the density reaches 2.5g/ cm3, the developed two-shot liquid system still has good properties, and can be used as a technical reserve for the future development of the Jilin Oilfield Research Block. Therefore, the two orifice liquid system can be applied to the four research blocks in Jilin oilfield, and has good application prospect.
【学位授予单位】：长江大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TE257.1
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