特低渗油藏长停井恢复技术
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摘要
针对延长油田特低渗油藏低产、低效长期停产井的特点,根据长停井形成的不同原因,应用水力喷射径向钻孔、补孔、选择性堵水、复合堵水、DRIVE解堵、二氧化氯解堵等治理技术对长停井进行治理。在现场应用中结合完善井网、注水井分注、注水井调驱技术,改善区块整体开发水平。在现场应用后,取得了较好的措施效果,并形成了长停井挖潜配套恢复技术,提高了特低渗油田注水开发水平。
In view of the characteristics of low-yield or inefficient long term shut-down wells in extra-low permeability reservoir of Yanchang oilfield, according to the causes forming long term shut-down wells, hydraulic radial perforation, perforation adding, selective plugging, compound plugging, DRIVE plug removal and ClO_2 plug removal were applied to treat these wells. In field application, the development level of the block was obviously improved in combination of well pattern improving, separate water injection, and flooding. After the field application, good results were achieved. A technology to recover long term shut-down wells was formatted to improve the water injection development level of extra-low permeability oilfields.
In view of the characteristics of low-yield or inefficient long term shut-down wells in extra-low permeability reservoir of Yanchang oilfield, according to the causes forming long term shut-down wells, hydraulic radial perforation, perforation adding, selective plugging, compound plugging, DRIVE plug removal and ClO_2 plug removal were applied to treat these wells. In field application, the development level of the block was obviously improved in combination of well pattern improving, separate water injection, and flooding. After the field application, good results were achieved. A technology to recover long term shut-down wells was formatted to improve the water injection development level of extra-low permeability oilfields.
引文
[1]王香增.特低渗油藏采油工艺技术[M].北京:石油工业出版社,2013.
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[3]Adel M Salem Ragab,Amr M Kamel.Radial Drilling Technique for Improving Well Productivity in Petrobel-Egypt[J].SPE164773,2013.
[4]舒刚,张华礼,曹权.水力喷射径向钻孔增产技术选井选层研究[J].钻采工艺,2017,40(3):46-49.
[5]余海棠,杜素珍,俞忠宝,等.水力喷射径向钻孔增产技术选井选层研究[J].钻采工艺,2017,40(3):46-49.
[6]付云龙.依托补孔技术改善油田开发效果[J].中国石油和化工标准与质量,2014,(6):141.
[7]赵福麟.油井选择性堵水[J].中国石油大学学报(自然科学版),2010,34(1):84-92.
[8]付贵春.探讨油井选择性堵水[J].中国化工贸易,2014,6(29):183.
[9]樊世忠,王彬.二氧化氯解堵技术[J].钻井液与完井液,2005,22(增刊):113-116.
[10]段玉秀,雷晓岚,吴金桥,等.粘弹性表面活性剂清洁压裂液破胶剂筛选实验[J].石油地质与工程,2013,27(5):136-138.
[2]徐洋.水力喷射径向钻孔工艺射流参数研究[D].大庆:东北石油大学,2012:9-10.
[3]Adel M Salem Ragab,Amr M Kamel.Radial Drilling Technique for Improving Well Productivity in Petrobel-Egypt[J].SPE164773,2013.
[4]舒刚,张华礼,曹权.水力喷射径向钻孔增产技术选井选层研究[J].钻采工艺,2017,40(3):46-49.
[5]余海棠,杜素珍,俞忠宝,等.水力喷射径向钻孔增产技术选井选层研究[J].钻采工艺,2017,40(3):46-49.
[6]付云龙.依托补孔技术改善油田开发效果[J].中国石油和化工标准与质量,2014,(6):141.
[7]赵福麟.油井选择性堵水[J].中国石油大学学报(自然科学版),2010,34(1):84-92.
[8]付贵春.探讨油井选择性堵水[J].中国化工贸易,2014,6(29):183.
[9]樊世忠,王彬.二氧化氯解堵技术[J].钻井液与完井液,2005,22(增刊):113-116.
[10]段玉秀,雷晓岚,吴金桥,等.粘弹性表面活性剂清洁压裂液破胶剂筛选实验[J].石油地质与工程,2013,27(5):136-138.