海拉尔油田低产低效区块引效压裂治理技术
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摘要
海拉尔油田断块油藏地质条件复杂、非均质性强,常规压裂措施效果不理想。为进一步提高低产低效区块整体开发效果,运用压裂工程与油藏地质一体化的研究方法,开展了复杂岩性储层岩石力学参数精细解释,明确了油田开发后期区域动态应力场变化规律;采用非对称全缝长人工裂缝模拟技术,并结合水流优势流场,进一步优化多分支裂缝压裂施工参数,实现油田整体有效动用。现场应用12个区块161口井,油井累计增产18.05×10~4 t,水井累计增注70.90×10~4 m~3,水驱控制程度提高了18.5%,措施效果显著。
The fault block reservoirs in Hailaer oilfield are characterized by complex geological conditions and strong heterogeneity.In order to improve the development effect of low production and low efficiency blocks by the integration method of fracturing engineering and reservoir geology,the detailed interpretation of rock mechanics parameters of complex lithologic reservoirs was carried out in depth.The asymmetric full-length artificial fracture simulation technology was adopted,combined with the advantages of water flow,an effective displacement system was established,the branch fracturing parameters were optimized and the overal effective production of the oilfield was achieved.Over the past few years,161 wells have been applied on site in 12 blocks,and the total production has been increased by 18.05×10~4 t in oil wells,the total injection o water has increased by 70.9×10~4m~3,the control degree of water driving has increased by 18.5%,and the effectiveness is obvious.
The fault block reservoirs in Hailaer oilfield are characterized by complex geological conditions and strong heterogeneity.In order to improve the development effect of low production and low efficiency blocks by the integration method of fracturing engineering and reservoir geology,the detailed interpretation of rock mechanics parameters of complex lithologic reservoirs was carried out in depth.The asymmetric full-length artificial fracture simulation technology was adopted,combined with the advantages of water flow,an effective displacement system was established,the branch fracturing parameters were optimized and the overal effective production of the oilfield was achieved.Over the past few years,161 wells have been applied on site in 12 blocks,and the total production has been increased by 18.05×10~4 t in oil wells,the total injection o water has increased by 70.9×10~4m~3,the control degree of water driving has increased by 18.5%,and the effectiveness is obvious.
引文
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[2]赵国石,徐健,邱金平.人工裂缝方向及其影响因素[J].中国工程科学,2012,12(4):100–104.
[3]师永民,张玉广.石油工程地质[M].北京:科学出版社,2017:5–7.
[4]冯立,才庆,王云涛,等.海拉尔油田不同岩性动态岩石力学参数模型建立及求解[J].油气田地面工程,2011,30(10):4–5.
[5]齐士龙.海拉尔油田薄差储层细分多层压裂技术[J].大庆石油地质与开发,2015,34(5):81–96.
[6]王贤君,肖丹凤,尚立涛.薄差储层压裂改造技术在海拉尔油田的应用[J].石油地质与工程,2015,29(5):107–109.
[7]宋书君.复杂断块群四维应力场模型及油藏预测[M].北京:石油工业出版社,2003:46–62.
[8]张玉广.海拉尔油田薄差储层细分多层压裂技术基于叠前弹性参数反演的三维应力场及全缝长整体压裂技术研究[D].东北石油大学,2012:42–63.
[9]谢朝阳,张浩,唐鹏飞.海拉尔盆地复杂岩性储层压裂增产技术[J].大庆石油地质与开发,2006,25(5):57–60.
[10]唐涛.地应力扰动场研究及其对人工裂缝形态的影响初探[J].油气田地面工程,2006,28(3):23–25.
[11]李存荣,贺杨,翁定为.苏德尔特油田裂缝型油藏体积改造技术应用与分析[J].大庆石油地质与开发,2013,33(4):96–100.
[12]王秀臣,杨成彬,张有才,等.非裂缝型砂岩储层缝网压裂技术[J].大庆石油地质与开发,2014,33(4):235–239.
[13]程玉琪,王树立,周志军,等.海拉尔油田不同区块地应力分布规律[J].新疆石油地质,2009,30(1):81–84.
[14]王贤君,尚立涛,张明慧,等.可降解纤维压裂技术研究与现场试验[J].大庆石油地质与开发,2013,32(2):141–144.
[15]李玮,李卓伦,杨斌,等.多分支缝水力压裂近井筒起裂机制研究[J].特种油气藏,2017,24(1):138–142.
[16]夏富国,郭建春,袁浩仁,等.基于支撑剂数的压裂优化设计方法研究[J].国外油田工程,2010,26(10):20–22.
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