第39参第3期 2017年5月
石油钻采工艺
OIL DRILLING & PRODUCTION TECHNOLOGY
文章编号：10007393(2017）030319-04
DOI:10.13639/j-odpt.2017.03.012
Vol. 39 No. 3 May 2017
“接力式”免钻注水泥器在漏失井固井中的应用
李胜杰
中国石油大潘油田第五采油厂
引用格式：李胜杰“接力式”免钻注水泥器在漏失并固并中的应用[J】.石油钻采工艺，2017,39(3)：319-322.
摘要：大港油田港西油田一区二、四断块在加密钻井中，经常发生的层并漏的间题。该断块油藏为明化镇组、馆陶组，埋深700~1500m，纵向上油层分布密集，许多小块油层常年枯竭式开采，造成地层低压，压力系数0.85，日的层承压能力满足不了原设计的二开并固井的要求，给后续固井质量带来了严峻的间题。为提高图并质量，针对漏失的原因，进行了免钻双级注水混完井并身结构设计，研究开发了“接力式”免站双级注水泥器和带档销套管外封隔器的联作技术，“接力式”免钻双级注水泥器成功地解决了双级图并与带档销套管外对隔器的配合、免钻等工艺问题，现场应用固井质量合格率大于90%。
关键词：漏失井；免钻；双级固井；套管外封隔器；联作
中图分类号：TE256
文献标识码：B
Application ofrelay-typedevicewithnodrillingandnocementing
in cementing oflostcirculationwell
LI Shengjie
No.5 Oal Production Planr, PetroChina Dagang Oijfield Company, Tianjin 300270, Ching
Citation: LI Shengjie. Application of relay-type device with no drilling and no cementing in cementing oflost circulation well [ J ] Oil Drlling & Production Technology, 2017, 39(3): 319-322
Abstract: During the infill drlling in the second and fourth fault blocks of Gangxi Aera 1 in Dagang Oilfield, lost circulation of-ten happens in the target layers. The faulted block oil reservoirs are located in Minghua and Guantao Formations with burial depth of 700-1 500 m. Oil layers are closely distributed in the vertical direction and many small oil layers are always developed in the depletior mode without energy supplementation, so the reservoir pressure is low with pressure coefficient of 0.85. And consequently, the pressure bearing capacity of target beds cannot satisfy the requirements of originally designed second-section cementing, and the subsequently cementing quality is impacted seriously. To improve cementing quality, the casing program for well completion of drilling free two-stage cementing was designed after the reasons for lost circulation were analyzed. The combination technology of relay drilling free two-stage cementing device and extemal casing packer with backing pin was researched and developed. By virtue of relay drlling free two-stage cementing device, the technical issues are solved successfully, such as twostage cementing, coordination with the external casing packer with backing pin and drilling free. The qualified cementing rate is over 90%.
Key words: lost circulation well; drilling free; two-stage cementing, external casing packer; combination
在固井作业中，对于深井和易漏地层，往往采用双级固井的方法。目前应用的双级注水泥器（12],从工具操作方式上，有机械式和压差式2种；从工具
附件的处理方式上，有钻塞式和免钻式2种。随技术的发展，应用较多的是免钻式双级注水泥器，
大港油田在老区加密钻井过程中，经常发生井
第一作者：李胜杰（1978-),2002年半业于西南石油学院石油工程专业，现以事产能建设钻井、试油技术管理工作。通试地址：(300280）
天津大港油田公司第五来油厂。电话：022-25933240。E-mail；dg_lishjie@petrochina.com.cn
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