第34卷第3期 2017年5月
钻井液与完井液
DRILLINGFLUID&COMPLETIONFLUID
doi:10.3969/j.issn.1001-5620.2017.03.008
B国Syl气田Syl25井钻井液技术
Vol. 34 No. 3 May2017
刘海鹏"，王本利"，赵黎明'，李希君'，洪航海"，王伟"，吴万华2（1.中国石化集团胜利石油工程有限公司钻井工程技术公司，山东东营257064；2.华北油田公司技术监督检验处，河北任丘062552）刘海鹏，王本利，赵擎明，等，B国Syl气田Sy125井钻井液技术[].钻井液与完井液，2017，34（3）：44-48
LIU Haipeng, WANG Benli, ZHAO Liming, et al.Drilling fluid technology for use in drilling well Sy125 in Syl gas field in country B[J].Drilling Fluid & Completion Fluid,2017,34（3): 44-48.
摘要B国Syl气田地质结构复杂，在已市的21口中，钻井过程中卡钻9口井，报度7口井，出现各种复杂23次。为了能够更好地开发Syl气田，B国国家天然气田有限公司与中石化合作，在Syl气田市井4口，Syl25井是合作的第一口井。 Syl25并设计并深3200m，实际完结井深3560m。通过室内试验模拟，优选不同体系以应对不同开次地层。施工过程中，通过适当提高膨润土含量和抑制能力，避免粉砂着钻进振动筛大量跑浆间题；保持良好的流型冲刷并壁，并辅以工程划眼，克服了Syl区块砂岩段的瞬间小井跟间题；选用胺基聚醇钻井液体系应对Syl区块四开井段井壁稳定问题。在设计基础上，配合钻井、地质加深钻进至3560m，钻探开发了3200～3560m井段，该井段是B国钻井史上从未钻探地层，获得了该
并段地质岩性资料，并在该井段额外发现7套高产气层，完钻测试收获日产量为6.4×10"m/d的工业气流。关键词粉砂岩；页着墙塌；胺基聚醇-KCI钻井液体系；砂著瞬间小井眼；Sy125井
文章编号：1001-5620（2017）03-0044-05
中图分类号：TE254.3
文献标识码：A
Drilling Fluid Technology for Use in Drilling Well Sy125 in Syl Gas Field in Country B LIU Haipeng', WANG Benli', ZHAO Liming', LI Xijun', HONG Hanghai', WANG Wei', WU Wanhua
(1.Drilling Engineering Technology Branch of Shengli Petroleum Engineering Ltd.,Sinopec, Dongying, Shandong 257064;
2.Technical supervision and inspectiondepartmentof Huabei Oilfield Company,Renqiu,Hebei 062552)
Abstract The Syl gas field located in Country B has complex geological structures. 21 wells were drilled in this gas field, nine of which have encountered pipe sticking during drilling, 7 abandoned. During drilling of the 21 wells, 23 times of various drilling troubles took place. To better develop the Syl gas field, a cooperation agreement was reached between the National Gas Field Company Ltd. of the country B and Sinopec, which proposed 4 wells in this gas field. The Well Syl-25 was the first well to be drilled, with designed depth of 3,200 m, and actual drilled depth of3,560 m. Different dillingffuid fomulation were selected for use in different intervals. To avoid the flow of drilling fluid over the shale shakers in siltstone drilling, the bentonite content of the drilling fluid was reasonably increased and the inhibitive capacity improved. Good mud rheology, which was maintained to clean the hole, accompanied by reaming operation, overcame the problem of"sudden slim hole" along the sandstone section in the Block Syl. In drilling the fourth interval, amine based poly alcohol drilling fluid was used to stabilize the borehole wall. The Well Syl-25 was finally deepened to 3,560 m with the consent from drilling and geology engineers. Drilling of the hole section from 3,200-3,560 m, which had never been performed in the past in
nlitholog
the country B, not only helped the engineers obtair
ical data ofthis section, it alsofound 7 extra pay zones with high production
rates,Completion tests of the well gave birth to 640,000 m:/day industrial gas flow
Key words Siltstone; Borehole collapse in shale formation; Amine based poly alcohol drilling fluid; Sudden slim hole in sandstone; WellSyl-25
Syl气田位于savma盆地的南部中心部位， trura高原的西缘，在B国首都东北约100km，构
造为南北不对称的背斜构造。该区块隶属于B国国家天然气田有限公司，地质结构复杂。经调查，
第一作者简介：刘海鹏，1979年生，高级工程师，2003年毕业于石油大学（华东）应用化学专业，现在从事钻井液
的现场技术服务和室内研究工作。电话13589449805；E-mail：haipengl@163.com。万方数据