第33卷第6期 2016年11月
钻井液与完井液
DRILLING FLUID&COMPLETIONFLUID
doi: 10.3696/j.issn.1001-5620.2016.06.010
水基钻井液CO,污染的处理
Vol. 33 No. 6 Nov.2016
杨媚1,2，艾加伟1.2，李巍1.3，罗陶涛1.3，
陈馥1.2，，
，陈俊斌1,3
（1.油气田应用化学四川省重点实验室，成都610500；2.西南石油大学化学化工学院，成都610500；
3.中国石油川庆钻操工程有限公司钻果工程技术研究院，四川广汉618300）
陈线等，水基粘并液CO,净染的处理[3].结并决与完升滚.2016，33（6)；58-62
量器目前钻并减CO,污旁处理被术的研究成果较多，但在实际应用中仍然存在许多同题，是一不十分缺手的同
摘要
期。总结了见的CO，污染处理方式及其不足之处。针对水基结并该CO，污染现象，根据得染机理提出了处理建议：保持钻非承中量度的粘上合量，使用Ca(OD,和CaCl,等钙处理剂：使用抗高混抗整的能吸附性处理剂、适多使用新浆替代者表。分留了XX46-X1和XX008-6-X2两口受CO,污染并的登理情况，以XX46-X1并为例，采取的具体措施有：使用高心机控制网相合量，用真空服气器不间新在地置成气，增大估并减密度至2.0g/em，以阻止C0,进入流体；使用送量0.2%石成乳冲入钻并求，补充SMP-目、SMP-I、高温抗整降滤失剂RSTF、高温希释剂HTX等处理剂及NaOH胶液；由于净染获为严重，后期配制胺液时加入质量0.5%CaC,配合处理，受污染钻并液接建议经过纯理后，钻#滤黏度、切力降低，流变性和费失量得列控制，满是下工程需要，达到了额期目的，
关键词结并液；00,毒象；肾处理；患润土；结排液添加剂中图分类号：TE254.2
文献标识码：A
文章编号：1001-5620（2016）06-0058-05
Treatment of CO,Contamination toWaterBase DrillingFluids CHEN Fu', YANG Mei'2, AI Jiawei', LI Wei'3, LUO Taotao', CHEN Junbin'
(1. Oil & Gas Field Applied Chemistry Key Laboratory of Sichuan Province, Chengdu, Sichuan 610500; 2. School of Chemistry and Chemical Engineering, Southwest Petroleum University, Chnegdu 610500; 3. Drilling & Production Technology Research Institute of CCDC, Guanghan, Sichuan 618300)
Abstract Many technologies handling CO, contamination to drilling fluids have shortages in practical use, This paper summarizes the deficiencies of the methods commonly used, and presents advices for the treatment of CO, contamination based on the mechanisms of contamination: drilling fluid should have moderate bentonite content, and Ca(OH), and CaCl, should be used, High temperature salt-resistant and highly adsorptive drilling fluid additives should be used, and old mud replaced with new one if necessary. Contamination oeeodn98oet aaaooro sg in drilling the well XX46-X1, centrifuges were used to control solids content and vacuum degassers used for continuous degassing of the drilling fluid at the surface. Mud density was increased to 2.0 g/cm’ to prevent CO, gas cut, A proper amount of 0.2% Ca(OH), SMP-Il, SMP-III, RSTF (high temperature salt-resistant filter loss reducer), HTX (high temperature thinner) and NaOH solution were usedto minimize the negative effects of CO, on the properties of the drilling fluid. 0.5% CaCl, solution was used when the CO, gas cut became severe in late period. With these treatment, the viscosity and gel strengths ofthe drilling fluid were reduced, and the rheology
and filter loss controlled, satisfying the needs of engineering and achieving the desired results. Key words Drilling fluid; CO,; Calcium treatment agent; Bentonite; Drilling additives
随着勘探开发的深人，水基钻井液受CO，污
染有越来越严重的趋势。虽然，近年来许多专家学
第一作者简介：陈载，1964年生，1986年获西南石油学院学士学位，1989年获西南石油大学硕士学位，主要从事油
气田增产措施的工作液和外加剂的开发、研制和应用。E-mail：fuchenswpu126.com。万方数据