Open AccessNovel acid soluble consolidating material to overcome lost circulation problems in reservoir intervals
Author(s) -
Jinyang Feng,
Lihui Zheng,
L. Li,
Huimin Hao,
C. Zhang,
Z. Zhang
Publication year - 2019
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/634/1/012008
Subject(s) - lost circulation , curing (chemistry) , oil shale , dissolution , seal (emblem) , materials science , petroleum engineering , filter cake , composite material , geology , chemistry , chemical engineering , waste management , drilling fluid , metallurgy , engineering , chromatography , drilling , art , visual arts
Based on lost circulation problem, a new kind of acid soluble consolidating material was developed, and the sealing characteristics were evaluated. This acid soluble consolidating material had the characteristics of rapid water loss, high filter-cake consistency and high acid dissolution. The results indicated that the obtained curing slug had good stability at high temperature, and the sealing strength of curing slug was as high as 10 MPa. High temperature and high pressure (HTHP) sealing analog experiment indicated that the maximum pressure-bearing capacity of plugged zone was up to 18.5 MPa. Using this consolidating material to seal the shale is a very powerful and economical approach to address lost circulation problem in troublesome thief zones.