莺歌海盆地盖层泥岩钻井提速研究  

Study on Improvement of ROP in Mudstone Cap Rock in Yinggehai Basin

作　　者：史吉辉 SHI Jihui(Sinopec Offshore Oilfield Services Company Shanghai Drilling Division,Shanghai 201206,China)

机构地区：[1]中石化海洋石油工程有限公司上海钻井分公司,上海200120

出　　处：《海洋石油》2018年第3期52-55,60,共5页Offshore Oil

摘　　要：南海西部油田莺歌海盆地高压储层上部泥岩盖层机械钻速非常低,一直是困扰现场作业的难题。此文针对该段泥岩机械钻速低机理开展了研究,通过对比现场多种提速方法,找出了适用于该段泥岩的提速技术,通过研究表明:水力脉冲工具提速效果显著,311.2 mm井段的机械钻速提高2.86倍,215.9 mm井段的机械钻速提高2.56倍,为后续提高海上高温高压井塑性泥岩的机械钻速提供了借鉴和参考。The low rate of penetration(ROP)through the mudstone cap rock over the high pressure reservoirs in the oilfields in western South China Sea has been a challenge that perplexes the field operation.This paper focuses on the mechanism that cause the low ROP and summarizes a set of drilling speed-up technique appropriate for the mudstone cap rock by comparing the effect of different drilling speed-up methods used in the field.The study shows that the application effect of hydraulic pulse tool is remarkable,as evidenced by the facts that the ROP is increased 2.86 times in the 311.2 mm section and 2.56 times in the 215.9 mm section,respectively.It provides a reference to the subsequent offshore operations with the similar geological condition.

关 键 词：莺歌海 高温高压 钻井提速 水力脉冲工具 

分 类 号：TE52[石油与天然气工程—油气田开发工程]