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[1]张伟国 金 颢 李 波 王志远 王 泽 仉 志.流花16-2油田钻井返排岩屑堆积参数预测方法[J].中国海上油气,2020,32(01):111-118.[doi:10.11935/j.issn.1673-1506.2020.01.013]
 ZHANG Weiguo JIN Hao LI Bo WANG Zhiyuan WANG Ze ZHANG Zhi.Method in predicting the returned cuttings accumulation parameters of LH16-2 oilfield[J].China Offshore Oil and Gas,2020,32(01):111-118.[doi:10.11935/j.issn.1673-1506.2020.01.013]
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流花16-2油田钻井返排岩屑堆积参数预测方法()

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

卷:
第32卷
期数:
2020年01期
页码:
111-118
栏目:
钻采工程
出版日期:
2020-01-15

文章信息/Info

Title:
Method in predicting the returned cuttings accumulation parameters of LH16-2 oilfield
文章编号:
1673-1506(2020)01-0111-08
作者:
张伟国1 金 颢1 李 波1 王志远2 王 泽2 仉 志2
(1. 中海石油(中国)有限公司深圳分公司 广东深圳 518067; 2. 中国石油大学(华东)石油工程学院 山东青岛 266580)
Author(s):
ZHANG Weiguo1 JIN Hao1 LI Bo1 WANG Zhiyuan2 WANG Ze2 ZHANG Zhi2
(1. CNOOC China Limited, Shenzhen Branch, Shenzhen, Guangdong 518067, China; 2. School of Petroleum Engineering, China University of Petroleum, Qingdao, Shandong 266580, China)
关键词:
流花16-2油田 海洋钻井 生产管汇 岩屑运移 堆积预测模型
Keywords:
LH16-2 oilfield offshore drilling production manifolds cuttings migration accumulation prediction model
分类号:
TE21
DOI:
10.11935/j.issn.1673-1506.2020.01.013
文献标志码:
A
摘要:
在海洋钻井作业中将钻屑排放到海床可显著降低钻井成本,但会导致钻井井场附近海床形成岩屑堆积体,进而会改变原有海床起伏趋势,从而给生产管汇水下安装带来安全隐患。基于岩屑颗粒受力分析,综合考虑岩屑性质(粒度分布、密度和球度)和海水性质(密度和黏度)对岩屑运移的影响,建立了返排岩屑堆积预测模型。利用建立的返排岩屑堆积预测模型分析了流花16-2油田LH16-2-A1井岩屑堆积参数及岩屑运移规律,结果表明本文方法预测结果较为准确,可满足现场需求; 当排量小于4 200 L/min、洋流速度小于0.1 m/s时形成岩屑堆积体距井口不足50 m,存在岩屑堆积体堵塞临井井口隐患,因此建议增大钻井液排量使岩屑运移距离增加,从而保障邻井井口安全。本文研究结果对钻井返排岩屑堆积参数预测及生产管汇设计安装具有指导意义。
Abstract:
Discharging cuttings to the sea floor during offshore drilling can significantly reduce drilling costs, but it tends to form debris deposits on the sea floor near the rig sit and further changes the original undulation trend of sea floor, thus bringing safety hazards to the underwater installation of production manifolds. Through analyzing the force of cuttings particles, after comprehensively considering the effects of cuttings properties(granularity distribution, density and sphericity)and seawater properties(density and viscosity)on cuttings migration, a prediction model for the accumulation of returned cuttings is established. By using the established model, the accumulation parameters and migration laws of cuttings in Well LH16-2-A1 in LH16-2 oilfield are anlyzed. The results show that the prediction results of method in this paper are more accurate and can meet the needs of field operations. When the flowrate is less than 4 200 L/min and the ocean current velocity is less than 0.1 m/s, the formed debris accumulation is less than 50 m away from the wellhead, which is likely to block the wellhead of adjacent wells. In order to ensure the wellhead safety of adjacent wells, it is recommended to increase the flowrate of drilling fluid, thus increasing the migration distance of cuttings. The research results in this paper are of guiding significance for the prediction of returned cuttings accumulation parameters and the design/installation of production manifolds.

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备注/Memo

备注/Memo:
*山东省杰出青年基金“油气井多相流动理论及应用(编号:JQ201716)”部分研究成果。 第一作者简介: 张伟国,男,高级工程师,2002 年毕业于原石油大学(华东)石油工程专业,主要从事海上钻井完井技术研究及相关管理工作。地址:深圳市南山区后海滨路(深圳湾段)3168号中海油大厦A座3410室(邮编:518067)。E-mail:zhangwg@cnooc.com.cn。收稿日期:2019-03-20 改回日期:2019-08-30
更新日期/Last Update: 2020-01-15