韩耀图,庞明越,王晓鹏,林家昱
HAN Yaotu,PANG Mingyue,WANG Xiaopeng,LIN Jiayu

• 1:中海石油(中国)有限公司天津分公司
• 2:西南石油大学石油与天然气工程学院

摘要(Abstract)：

渤海某油田经过多年注水开发,疏松砂岩储集层呈现局部压力系数低、层间差异大的特点,储集层保护难度大。目前国内外针对疏松砂岩储集层出砂机理及防砂措施研究较多,而针对疏松砂岩复杂压力体系调整井钻井液及钻井优化技术研究不足。基于此,针对该油田开发情况,结合疏松砂岩和地层压力复杂的特点,开展了储集层伤害机理研究,利用室内实验进行了钻井液体系优化研究并优化设计了钻井施工工艺。结果表明:钻井阶段储集层损害的主要原因为黏土吸水膨胀、外部或内部固体颗粒运移堵塞孔喉或孔隙导致渗透率降低,以及施工工艺不完善等;使用胺基硅醇、LPF-ZP-HTC复配能提高钻井液的抑制性和封堵承压能力;并通过施工工艺的优化研究,形成了一套疏松砂岩复杂压力储集层保护技术。渤海油田现场试用情况表明,该技术的应用能够实现易造浆井段的流变稳定、提高起钻速率、缩短建井周期及提高单井产量。
After many years' waterflooding development of one oilfield in Bohai,the unconsolidated sandstone reservoirs have the characteristics of low local pressure coefficient and great inter-layer difference,therefore the reservoir protection is very difficult. Nowadays,the sand produced mechanisms and sand controlling measures of this kind of the reservoir at home and abroad were researched a great deal,while few people studied on the adjustingwell drilling fluid and drilling optimizing technique for the unconsolidated sandstone and complex pressure system.On the basis of the above,in the light of the developed conditions of the oilfield,integrating with the two characteristics stated above,the reservoir damage mechanisms were figured out,and moreover with the help of the indoor experiment,the drilling fluid system was optimized and the drilling operation technologies was optimally designed.The study achievements show that the main reasons of the reservoir damage result from the clay water swelling and solid particles no matter the external and internal migration blocking the throats and pores,and finally the permeabilities are decreased and moreover the operational technologies are not perfected and so on; the inhibitive propertyof the drilling fluid and pressure bearing capacity can be improved by adding HAS and LPF-ZP-HTC,and furthermore,by means of the studied optimization of the operation technologies,a set of the reservoir protecting techniques were developed for the unconsolidated sandstone and complex pressure reservoirs. The field test of Bohai Oilfield shows that the application of the technique can realize the rheological stability of the slurry-yield well section,increase the lifting rate,shorten the drilling period and improve the production of the individual well.

关键词(KeyWords)： 渤海油田;疏松砂岩;复杂压力;储集层保护;钻井工艺
Bohai Oilfield;unconsolidated sandstone;complex pressure;reservoir protection;drilling technology

Abstract:

Keywords:

基金项目(Foundation): 国家科技重大专项“复杂压力体系油藏钻完井全过程储层保护技术”(2011ZX05057-002-002)

作者(Author): 韩耀图,庞明越,王晓鹏,林家昱
HAN Yaotu,PANG Mingyue,WANG Xiaopeng,LIN Jiayu

DOI: 10.19597/j.issn.1000-3754.201611074

参考文献(References)：

• [1]李玉光.海洋石油高孔高渗油田开发储层保护研究[J].中国海上油气(工程),2001,13(4):42-47.
• [2]王伟庆,邹丽萍,郭津.疏松砂岩储层出砂机理和保护措施:以太平油田和尚店油田为例[J].油气地质与采收率,2003,10(3):69-70.
• [3]蒋官澄,郭雄华,李道轩.疏松砂岩油藏深部稳砂体系配方设计与应用[J].应用化学,2007,24(7):796-800.
• [4]李斌,黄焕阁,邓建明,等.简易防砂完井技术在渤海稠油油田的应用[J].石油钻采工艺,2007,29(3):25-28.
• [5]李文军.孤岛油田出砂机理及防砂方法研究[D].荆州:长江大学,2014.
• [6]信晓栋.渤海地区疏松砂岩适度出砂控制技术研究[D].青岛:中国石油大学,2011.
• [7]岳前升,刘书杰,向兴金.适于疏松砂岩稠油油藏储集层保护的水平井钻井液[J].石油勘探与开发,2010,37(2):232-236.
• [8]韩立国,吕开河.高泥质疏松砂岩防塌保护油气层钻井液技术[J].石油钻采工艺,2006,28(5):25-27.
• [9]杨玉贵,康毅力,游利军,等.水平井钻井完井液侵入损害数值模拟研究进展[J].钻井液与完井液,2009,26(6):69-72.
• [10]耿铁.渤中13-1油田井壁稳定与钻井液优化技术研究[D].青岛:中国石油大学,2009.
• [11]姜伟.储层保护技术在渤海油田开发中的应用[J].中国海上油气(地质),2002,16(6):394-399.
• [12]方培林,刘俊军,白健华,等.渤海油田储层保护效果评价方法探讨[J].油气井测试,2015,24(5):39-42.
• [13]徐加放,李小迪,孙泽宁,等.疏松砂岩储层敏感性评价方法[J].中国石油大学学报(自然科学版),2014(5):130-134.