雷特堵漏钻井液在低承压地层试验
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摘要
低承压地层是由于特殊岩性的形成、压实过程中,未能形成良好的胶结和密闭构造,在后期地质运动中,发生岩变,导致地层承压能力较低,易发生井漏、井塌等风险,还可能造成油气储层的破坏。大港油田官962-17断块位的沙河街组的生物灰岩、玄武岩、中生界安山岩岩体发育地层,为典型低承压地层,钻井中常出现严重漏失;本文针对该区块低承压地层井漏状况和发生井漏的原因进行了分析,依据官962-17断块生物灰岩、玄武岩、安山岩地层特性,在官962-17断利用雷特高承压堵漏剂的现场试验,取得很好的效果。
The ability of low pressure formation is due to the special rock in the process of formation, compaction, not good cemented together and forms a closed structure. In the late geological movement, formation rock changes lead to lower formation pressure, easy occurrence of well leakage, well collapse and other risks, and may also destroy oil and gas reservoirs.Dagang oil field Guan 962-17 faultblock belongs to the structural reservoir, the Shahejie formation containing biological limestone, containing basalt, Mesozoic andesite, is a typical low pressure formation,and even serious leakage accidents. This paper analyzes the situation and causes of well leakage in low pressure formation in this block. The formation characteristics of limestones, basalt and andesite are analyzed. Field test of Leite high pressure plugging agent has been carried out and good results have been achieved.
The ability of low pressure formation is due to the special rock in the process of formation, compaction, not good cemented together and forms a closed structure. In the late geological movement, formation rock changes lead to lower formation pressure, easy occurrence of well leakage, well collapse and other risks, and may also destroy oil and gas reservoirs.Dagang oil field Guan 962-17 faultblock belongs to the structural reservoir, the Shahejie formation containing biological limestone, containing basalt, Mesozoic andesite, is a typical low pressure formation,and even serious leakage accidents. This paper analyzes the situation and causes of well leakage in low pressure formation in this block. The formation characteristics of limestones, basalt and andesite are analyzed. Field test of Leite high pressure plugging agent has been carried out and good results have been achieved.
引文
[1]石立明,曹灶开.凝胶堵漏技术在阳山矿区漏失地层中的应用[J].探矿工程,2015,(9):22-24.
[2]杨宽才,王兴乐,梁丽,等.基于新型中压堵漏试验仪的堵漏试验研究[J].探矿工程,2017,(2):49-52.
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[4]刘清峰,刘建忠,敖耀庭,等.地层承压能力的影响因素分析[J].内蒙古石油化工,2011,(13):34-37.
[5]臧艳彬,王瑞和,张锐.川东北地区钻井漏失及堵漏措施现状分析[J].石油钻探技术,2011,(2):60-64.
[6]陈星星.涪陵页岩气田防漏堵漏技术应用研究[J].探矿工程,2015,(3):11-14.
[7]刘金华,刘四海,王西江,等.塔河油田SX2井火成岩地层化学固结堵漏技术[J].探矿工程,2017,(3):31-34.
[8]丁立钦,王志乔,王瑜,等.层理性地层钻井稳定性分析模型[J].探矿工程,2017,(3):1-9.
[9]孙兆峰,李云贵,单素华.罗镇地区生物灰岩防漏堵漏技术研究[J].内蒙古石油化工,2010,(10):130-132.
[10]刘磊.欠平衡钻井适用地层及钻井效果影响因素分析[J].探矿工程,2017,(4):28-30.
[2]杨宽才,王兴乐,梁丽,等.基于新型中压堵漏试验仪的堵漏试验研究[J].探矿工程,2017,(2):49-52.
[3]刘振东.钻井漏失层位测量及堵漏模拟研究[J].探矿工程,2015,(8):13-16.
[4]刘清峰,刘建忠,敖耀庭,等.地层承压能力的影响因素分析[J].内蒙古石油化工,2011,(13):34-37.
[5]臧艳彬,王瑞和,张锐.川东北地区钻井漏失及堵漏措施现状分析[J].石油钻探技术,2011,(2):60-64.
[6]陈星星.涪陵页岩气田防漏堵漏技术应用研究[J].探矿工程,2015,(3):11-14.
[7]刘金华,刘四海,王西江,等.塔河油田SX2井火成岩地层化学固结堵漏技术[J].探矿工程,2017,(3):31-34.
[8]丁立钦,王志乔,王瑜,等.层理性地层钻井稳定性分析模型[J].探矿工程,2017,(3):1-9.
[9]孙兆峰,李云贵,单素华.罗镇地区生物灰岩防漏堵漏技术研究[J].内蒙古石油化工,2010,(10):130-132.
[10]刘磊.欠平衡钻井适用地层及钻井效果影响因素分析[J].探矿工程,2017,(4):28-30.