分支水平井泡沫钻井液研究及应用
发布时间：2018-07-17 20:47
【摘要】：在针对辽河油田砂岩油层和低压裂缝性潜山油层的勘探开发中,使用常规水基钻井液存在严重漏失问题,钻井工艺研究院研制出了抗高温可循环微泡沫钻井液体系。油田储量累计达3.75亿吨,占油田可采储量(10.856亿吨)的34.56%,其中压力系数低于0.8的储量约9382万吨,占油田可采储量的8.64%。对于压力系数低于1.0的低压地层的开发,现在有诸多技术:水平钻井技术、充气钻井液技术或水平泡沫钻井液,但这些技术在现场应用过程中都存在不同问题,为了解决这些问题,参照国外已于上世纪90年代开的油田分支水平钻井液技术研究,用于低压、衰竭、裂缝性地层及大裂缝型硬地层的钻探,在提高钻井速度,降低钻井费用,减少污染等方面取得了较好效果。迄今为止,国内未见系统研究油田分支水平钻井液的报道。本文通过调研国内外在泡沫钻井液方面所做的工作及所采取的措施,研究适合于地层压力系数较低条件下的分支水平钻井液;优选(或合成)分支水平钻井液所使用的化学处理剂(如起泡剂等),确定分支水平钻井液的配方;进行分支水平钻井液的发泡及消泡处理技术研究;进行泡沫流体的压缩性、流动性、抗温性、抗盐性及抗污染性能试验研究,确定其参数控制技术;进行分支水平钻井液现场施工工艺研究及相关设备的配套试验,逐步完善分支水平钻井液的配方,形成油田分支水平钻井液的现场施工工艺方案;现场试验,完成研究内容。并结合辽河油田的地层特性,制定了详细的施工措施,提出油田分支水平钻井液技术,旨在解决充气钻井液及一次性泡沫钻井难以解决的低压问题和一次性泡沫因排放造成的环境污染与成本增加问题,为欠平衡钻井技术的配套完整提供强有的技术支撑,该钻井液密度低,有利于提高钻速,可以作为解决超低压地层的井漏及油层保护难题的技术。在现场应用一次取得成功,产生了良好的经济和社会效益。
[Abstract]:In the exploration and development of sandstone reservoirs and low pressure fractured buried hill reservoirs in Liaohe Oilfield, there is a serious leakage problem in using conventional water-based drilling fluid, and the drilling fluid system is developed by drilling Technology Research Institute. The accumulative reserves of oil fields are 375 million tons, accounting for 34.56 tons of recoverable reserves (1.0856 billion tons), among which the reserves with pressure coefficient below 0.8 are about 93.82 million tons, accounting for 8.64 tons of recoverable reserves. For the development of low pressure formation with pressure coefficient below 1.0, there are many technologies: horizontal drilling technology, aerated drilling fluid technology or horizontal foam drilling fluid, but there are different problems in the field application of these technologies. In order to solve these problems, referring to the research on the horizontal drilling fluid technology of the branched oil fields, which has been developed in the last century, it is used in the drilling of low pressure, failure, fractured and large fractured hard formations. It can improve the drilling speed and reduce the drilling cost. Good results have been achieved in reducing pollution and so on. Up to now, no systematic study of the branch level drilling fluid has been reported in China. By investigating the work and measures taken in foam drilling fluid at home and abroad, this paper studies the branch horizontal drilling fluid suitable for low formation pressure coefficient. The chemical treatment agent (such as foaming agent) used to select (or synthesize) branched horizontal drilling fluid, determine the formula of branching horizontal drilling fluid, study foaming and defoaming treatment technology of branched horizontal drilling fluid, and carry out the compressibility of foam fluid, Fluidity, temperature resistance, salt resistance and pollution resistance are tested and studied to determine the parameter control technology, and the field construction process of branched horizontal drilling fluid and related equipment are studied to improve the formulation of branched horizontal drilling fluid. The field construction technology scheme of oilfield branch horizontal drilling fluid is formed, and the field test is carried out to complete the research content. Combined with the formation characteristics of Liaohe Oilfield, the detailed construction measures are worked out, and the branch horizontal drilling fluid technology is put forward. In order to solve the problem of low pressure and environmental pollution and cost increase caused by discharge of one-off foam, which is difficult to solve in inflatable drilling fluid and one-off foam drilling, and to provide strong technical support for the complete matching of underbalanced drilling technology, The low density of the drilling fluid is beneficial to improve the drilling speed and can be used as a technique to solve the problem of well leakage and reservoir protection in ultra-low pressure formation. It has been successfully applied in the field once and has produced good economic and social benefits.
【学位授予单位】：东北石油大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TE254
本文编号：2130890
[Abstract]:In the exploration and development of sandstone reservoirs and low pressure fractured buried hill reservoirs in Liaohe Oilfield, there is a serious leakage problem in using conventional water-based drilling fluid, and the drilling fluid system is developed by drilling Technology Research Institute. The accumulative reserves of oil fields are 375 million tons, accounting for 34.56 tons of recoverable reserves (1.0856 billion tons), among which the reserves with pressure coefficient below 0.8 are about 93.82 million tons, accounting for 8.64 tons of recoverable reserves. For the development of low pressure formation with pressure coefficient below 1.0, there are many technologies: horizontal drilling technology, aerated drilling fluid technology or horizontal foam drilling fluid, but there are different problems in the field application of these technologies. In order to solve these problems, referring to the research on the horizontal drilling fluid technology of the branched oil fields, which has been developed in the last century, it is used in the drilling of low pressure, failure, fractured and large fractured hard formations. It can improve the drilling speed and reduce the drilling cost. Good results have been achieved in reducing pollution and so on. Up to now, no systematic study of the branch level drilling fluid has been reported in China. By investigating the work and measures taken in foam drilling fluid at home and abroad, this paper studies the branch horizontal drilling fluid suitable for low formation pressure coefficient. The chemical treatment agent (such as foaming agent) used to select (or synthesize) branched horizontal drilling fluid, determine the formula of branching horizontal drilling fluid, study foaming and defoaming treatment technology of branched horizontal drilling fluid, and carry out the compressibility of foam fluid, Fluidity, temperature resistance, salt resistance and pollution resistance are tested and studied to determine the parameter control technology, and the field construction process of branched horizontal drilling fluid and related equipment are studied to improve the formulation of branched horizontal drilling fluid. The field construction technology scheme of oilfield branch horizontal drilling fluid is formed, and the field test is carried out to complete the research content. Combined with the formation characteristics of Liaohe Oilfield, the detailed construction measures are worked out, and the branch horizontal drilling fluid technology is put forward. In order to solve the problem of low pressure and environmental pollution and cost increase caused by discharge of one-off foam, which is difficult to solve in inflatable drilling fluid and one-off foam drilling, and to provide strong technical support for the complete matching of underbalanced drilling technology, The low density of the drilling fluid is beneficial to improve the drilling speed and can be used as a technique to solve the problem of well leakage and reservoir protection in ultra-low pressure formation. It has been successfully applied in the field once and has produced good economic and social benefits.
【学位授予单位】：东北石油大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TE254
【参考文献】
相关期刊论文 前1条
1 吕宏茹;周亚贤;郭建华;苏雪霞;王依建;史佩谦;;抗高温硬胶泡沫钻井液的研究与应用[J];断块油气田;2008年04期
，本文编号：2130890
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