|本期目录/Table of Contents|

[1]林四元 李 中 郭永宾 黄 熠 陈浩东 张波涛.北部湾盆地探井井身结构优化设计及应用[J].中国海上油气,2019,31(04):135-140.[doi:10.11935/j.issn.1673-1506.2019.04.017]
 LIN Siyuan LI Zhong GUO Yongbin HUANG Yi CHEN Haodong ZHANG Botao.Optimization design and application of casing program for exploratory wells in Beibuwan basin[J].China Offshore Oil and Gas,2019,31(04):135-140.[doi:10.11935/j.issn.1673-1506.2019.04.017]
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北部湾盆地探井井身结构优化设计及应用()

《中国海上油气》[ISSN:1673-1506/CN:11-5339/TE]

卷:
第31卷
期数:
2019年04期
页码:
135-140
栏目:
钻采工程(南海西部钻完井技术研究专辑)
出版日期:
2019-07-25

文章信息/Info

Title:
Optimization design and application of casing program for exploratory wells in Beibuwan basin
文章编号:
1673-1506(2019)04-0135-06
作者:
林四元1 李 中1 郭永宾1 黄 熠1 陈浩东1 张波涛2
(1. 中海石油(中国)有限公司湛江分公司 广东湛江 524057; 2. 中海油能源发展股份有限公司工程技术湛江分公司 广东湛江 524057)
Author(s):
LIN Siyuan1 LI Zhong1 GUO Yongbin1 HUANG Yi1 CHEN Haodong1 ZHANG Botao2
(1. CNOOC China Limited, Zhanjiang Branch, Zhanjiang, Guangdong 524057, China; 2. CNOOC EnerTech-Drilling & Production Co., Zhangjiang Branch, Zhanjiang, Guangdong 524057,China)
关键词:
北部湾盆地 探井 井身结构 “二合一”优化设计
Keywords:
Beibuwan basin exploratory well casing program “two-in-one”optimization design
分类号:
TE22
DOI:
10.11935/j.issn.1673-1506.2019.04.017
文献标志码:
A
摘要:
北部湾盆地古近系地层地应力复杂、坍塌压力高、钻井液安全密度窗口窄,钻井过程中易发生漏、卡、塌等井下复杂情况,并且所在海域每年7~10月易遭遇台风极端天气影响,常规508.00 mm隔水导管设计方案难以进一步缩短建井周期、提高钻井速度需求。本文通过隔水导管稳定性及强度理论分析,将表层套管与隔水导管进行“二合一”优化设计、古近系易坍塌必封地层与目的层进行“二合一”优化设计,形成了北部湾盆地探井井身结构优化设计方案。该方案已在北部湾盆地成功应用,单井可平均减少钻井工期7~8 d、降低钻井费用31%~37%,具有较好的应用推广价值。
Abstract:
The Paleogene formation in the Beibuwan basin has complex in-situ stress, high collapse pressure and narrow safety density window of drilling fluid, and downhole complexities of leakage, sticking, collapse may happen in the drilling process. In addition, the sea area where the basin is located is susceptible to extreme weather of typhoon in July to October. Hence, the conventional 508.00 mm riser design is difficult to further shorten the well construction period and increase the drilling speed. In this paper, through the theoretical analysis on the stability and strength of riser, the “two-in-one” optimization design of integrating the surface casing with the riser, and the “two-in-one” optimization design of sealing both the Paleogene fragile strata and target layer were proposed to form the optimized casing program design scheme for exploratory wells in Beibuwan basin. This scheme has been successfully applied in Beibuwan basin, and the drilling period per well is reduced by 7~8 d and 31.0%~37.0% of drilling cost is saved, showing a good application and promotion prospect.

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相似文献/References:

备注/Memo

备注/Memo:
*“十三五”国家科技重大专项“南海西部海域低渗油藏勘探开发关键技术(编号:2016ZX05024-006)”部分研究成果。 第一作者简介: 林四元,男,高级工程师, 2006年毕业于长江大学石油工程专业,主要从事海洋石油钻完井工艺技术的研究与管理。地址:广东省湛江市坡头区南调路22号(邮编:524057)。E-mail:linsy@cnooc.com.cn。
更新日期/Last Update: 1900-01-01