Open AccessStudy on Clear Water Acidic Fracturing Increasing Injection Technology in Sandstone Oilfield
Author(s) -
Cha Na
Publication year - 2019
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.179
H-Index - 26
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/384/1/012228
Subject(s) - petroleum engineering , water injection (oil production) , hydraulic fracturing , adaptability , permeability (electromagnetism) , fracturing fluid , injection well , geology , environmental science , chemistry , ecology , biochemistry , membrane , biology
In view of the fact that it is difficult for some water injection wells in low permeability oilfields to absorb water and the general effect of conventional measures to increase injection, clean water acid fracturing technology research and field test of sandstone in low permeability reservoirs have been carried out. On the basis of fully investigating the adaptability of acid fracturing in sandstone reservoirs and combining with the actual development of low permeability oilfields in our factory, the technology of clear water fracturing and balanced acid fracturing is organically combined. After a lot of theoretical calculation, the construction parameters are optimized, and the suitable fracturing technology is optimized, which greatly reduces the requirements of surface construction equipment. At the same time, through indoor experiments, the suitable well entry fluids are screened to ensure the construction effect. At present, the technology has been tested in 6 wells and achieved good injection increase effect.