钻井液与完井液2017，Vol.34Issue(6)：18-23,6.DOI:10.3969/j.issn.1001-5620.2017.06.004
超高温屏蔽暂堵剂SMHHP的室内实验研究
Laboratory Study on Ultra-high Temperature Temporary Plugging Agent SMHHP
摘要
Abstract
A temporary plugging agent SMHHP has been developed to satisfy the needs of temporary plugging in ultra-high temperature reservoirs.SMHHP is composed of particle material,fiber material,elastic material and nanophase material which are in reasonable ratios.The sizing and selection of particles was based on ideal packing theory.A high temperature highly acid soluble fiber was introduced into SMHHP to improve the stability of the plugged formations.Considering the poor adaptability of particle sizes to the sizes of pores to be plugged because of the irregularity of particles during processing,a high temperature elastic material was added into SMHHP.Tiny pores formed in bridging can be further precisely packed with nanophase material,thereby improvingthe compactability of plugged formations.SMHHP only slightly affect mud rheology,and has high temperature resistance,strong sealing ability,goodtemporary plugging effect and high acid solubility.SMHHP functioned normally at 200 ℃.Test performed with SMHHP slurry on 0.2 mm fractures showed that pressure bearing capacity of more than 7 MPa can be achieved.Filtration depth of SMHHP slurry on sand bed with 0.28-0.90 mm sand particles was less than 3 cm.Percent permeability recovery of cores contaminated with SMHHP slurry was greater than 93.9％.Acid solubility of SMHHP was greater than 82.1％.SMHHP can be used in reservoirs of ultrahigh temperatures,protecting the reservoirs from being damaged.关键词
屏蔽暂堵/超高温钻井液/封堵/防止地层损害/酸溶Key words
Temporary plugging/Ultra-high temperature drilling fluid/Plugging/Reservoir protection/Acid soluble分类
能源科技引用本文复制引用
何仲,刘金华,方静,胡子乔..超高温屏蔽暂堵剂SMHHP的室内实验研究[J].钻井液与完井液,2017,34(6):18-23,6.基金项目
中国石化西北油田分公司的局级课题“塔中区块钻井液堵漏技术研究”支持(34400007-16-ZC0607-0055). （34400007-16-ZC0607-0055）
