钻井液与完井液2017，Vol.34Issue(6)：46-51,6.DOI:10.3969/j.issn.1001-5620.2017.06.009
诺1井钻井液技术及复杂情况处理
Drilling Fluid Technology Used in Drilling Well Nuo-1 and Handling of Downhole Complications
邱春阳 1叶洪超 1王兴胜 1温守云 1陈二丁 1张海青1
作者信息
- 1. 中石化胜利石油工程有限公司钻井工程技术公司,山东东营257064
- 折叠
摘要
Abstract
Well Nuo-1,5 000 m in depth,is a key exploratory well located in the east of the northern margin (Quanji anticline,Huobuxun sag,Sanhu depression) of the Qaidam Basin.Formations penetrated by the well included strongly water-sensitive mudstones and frequent interbeds of sandstones and mudstones.Faults are developed in the area and formation saltwater renders contamination to the drilling fluids used.Difficulties in drilling fluid operation existed because of the problems and no offset well data were available for reference.An amine-based silanol highly inhibitive plugging drilling fluid was selected to inhibit the hydration and swelling of shale,and techniques for drilling fluid maintenance were optimized to inhibit the hydration and swelling of mudstone and shale formations,thereby to stabilize the borehole wall.The drilling of Well Nuo-1 was successful,providing a technical support for subsequent drilling operation in the same area.When drilled to the designed depth of each interval and the completion depth of the well,viscous mud was spotted at the bottom of the well to guarantee the success of casing running and well cementing.10 times of well logging were all conducted successfully and casing strings were run to the bottom with no hindrance.Average percent hole enlargement of the φb444.5mm was 7.46％,the φb 311.2 mm was 9.33％,and the φb 215.9 mm was 9.40％.Although pipe sticking had occurred drilling,these data indicate that the quality of the whole well is satisfactory,especially when the exploratory well was first drilled in an area that had never been explored.Average ROP of the well was 7.54 m/h,realizing the objective of"high quality fast drilling".关键词
井壁稳定/砂泥互层/胺基硅醇/强抑制钻井液/强封堵钻井液/诺1井Key words
Borehole stability/Interbedded sandstone and mudstone/Amine-based silanol/Strongly inhibitive drilling fluid/Plugging drilling fluid/Well Nuo-1分类
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邱春阳,叶洪超,王兴胜,温守云,陈二丁,张海青..诺1井钻井液技术及复杂情况处理[J].钻井液与完井液,2017,34(6):46-51,6.
