Journal of Petrochemical Universities

Journal of Petrochemical Universities ›› 2016, Vol. 29 ›› Issue (3): 38-42.DOI: 10.3969/j.issn.1006-396X.2016.03.008

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Research on Performance of Shearing Resistance Sealing Agent DLJ5 Used in Drilling Engineering

Yan Jian1, Lyu Haiyan2, Li Zhuanhong2   

  1. (1.College of Petroleum Engineering, Xi'an Shiyou University, Xi'an Shaanxi 710065, China;  2. National Engineering Laboratory for Low Permeability Exploration and Development, Oil and Gas Technology  Institute of Changqing Oilfield, Xi'an Shaanxi 710018, China)
  • Received:2016-04-01 Revised:2016-04-17 Published:2016-06-25 Online:2016-07-01

钻井用耐剪切堵漏剂DLJ-5的性能

闫 健1,吕海燕2,李转红2   

  1. (1.西安石油大学石油工程学院,陕西西安710065;2.长庆油田油气工艺研究院低渗透勘探开发国家工程实验室,陕西西安710018)
  • 基金资助:
    国家自然科学基金项目(51404197)

Abstract: Aiming at the poor plugging performance of conventional bridge plug plugging material or the problem of repeat leakage in the drilling process of fractured reservoir, a kind of shearing resistance sealing agent DLJ5 was synthesized by the adding of hectorite. The microstructure of DLJ5 was researched by laser particle size analyzer and diffractometer. The swelling property, shearing resistance property, compatibility with drilling fluid and plugging performance were evaluated through lab tests. The results show that the initial average particle size of sealing agent DLJ5 is 204.5 μm. The internal double network structure with organic and inorganic can improve the strength of sealing agent. The swelling ratio of sealing agent DLJ5 is 35.52 in the simulation formation water of 50 ℃. The sealing agent has good shearing resistance properties and good compatibility with Changqing drilling fluid. The sealing agent also has good plugging property in high salinity reservoir. The shearing resistance sealling agent has broad application prospects in the drilling of fractured reservoir.

Key words: Sealing agent, Hectorite, Swelling property, Shearing resistance, Plugging performance

摘要: 针对裂缝性地层钻井过程中,常规的桥塞堵漏材料堵漏效果不佳或者堵漏后发生重复性漏失的难题,通过引入锂皂石,研制出了一种耐剪切的钻井液堵漏剂DLJ-5,借助激光粒度分析仪和衍射仪研究了其微观形貌,并对其吸水膨胀性能、耐剪切性能以及与钻井液的配伍性进行了评价,最后研究了DLJ-5的堵漏性能。结果表明,研制出的堵漏剂DLJ-5的平均初始粒径为204.5μm,内部的有机和无机双网络结构提高了堵漏剂的强度。堵漏剂DLJ-5在50℃模拟地层水条件下的膨胀倍数为35.52,具有很好的耐剪切性能,与长庆油田钻井液的配伍性好,在高矿化度地层具有一定的堵漏承压性能。该耐剪切堵漏剂在裂缝性地层的钻井过程中具有广泛的应用前景。

关键词: 堵漏剂, 锂皂石, 膨胀性能, 耐剪切, 堵漏性能

Cite this article

Yan Jian, Lyu Haiyan, Li Zhuanhong. Research on Performance of Shearing Resistance Sealing Agent DLJ5 Used in Drilling Engineering[J]. Journal of Petrochemical Universities, 2016, 29(3): 38-42.

闫 健,吕海燕,李转红. 钻井用耐剪切堵漏剂DLJ-5的性能[J]. 石油化工高等学校学报, 2016, 29(3): 38-42.