HEM钻井液室内研究与在BD气田的成功应用  

Laboratory Study of HEM Drilling Fluid and Successfully Application in BD Project

作　　者：张文彬 王洪伟[1] 王雪松[1] Zhang Wenbin;Wang Hongwei;Wang Xuesong(COSL OiZ field Chemicals Division,Zhanjiang,Guangdong 524057,China)

机构地区：[1]中海油田服务股份有限公司油田化学事业部湛江作业公司,广东湛江524057

出　　处：《非常规油气》2018年第3期80-83,79,共5页Unconventional Oil & Gas

基　　金：中国海洋石油总公司基金项目"海外BD高温高压高含硫气田水平井钻完井关键技术研究"(YXKY-2015-ZY-15)资助

摘　　要：为了满足BD区块复杂地层钻井需求,筛选出适宜该区块特点的高性能钻井液体系,通过室内试验模拟和评估钻井液的抑制性、防泥包性能、抗污染性能,确定以聚胺为抑制剂的高性能HEM钻井液体系并应用于现场。结果表明,HEM钻井液线性膨胀率可控制在20%,钻具泥包概率为常规钻井液泥包概率的4%;室内使用71.25kg/m^3评价土进行污染试验,污染前后流变性波动可控制在25%范围之内。HEM钻井液体系在BD区块4口井的现场成功应用,钻井液密度达到1.85g/cm^3,常温常压失水控制在6mL之内。研究表明,高密度HEM钻井液体系可以有效解决BD区块的井下复杂情况,为后续区块开发钻井液体系的选择提供参考依据。In order to meet the drilling requirement of complex formation in BD block, a high performance drilling fluid system with suitable characteristics need to be selected. The inhibition, the anti balling performance and the an ti contamination performance of the drilling fluid were simulated and evaluated by indoor experiments and applied in field location. The HEM drilling fluid linear swelling ratio can be controlled less than 20G, the BHA balling proba bility decrease to 4~ of conventional drilling fluid system, after contaminated with 71.25 kg/m^2 re dust, the rheolo gy volatility less than 25G. HEM drilling fluid system was applied in BD project for four wells with drilling fluid density of 1.85 g/cm^2 , API filtration loss less than 6 mL, showed a strong inhibitory, anti balling performance and anti contamination characteristics and fully meet drilling operation requirements. By the study and applying of the HEM drilling fluid, confirmed the high density HEM fluid can solve the complex formation issue in BD block and will provide a reference basis for the follow up block development at the drilling fluid selection.

关 键 词：聚胺 强抑制性 防泥包 抗污染 

分 类 号：TE254[石油与天然气工程—油气井工程]