Experiment on stress sensitivity in low permeability sandstone reservoir;

Experiment:water flooding characteristics of low oil saturation sandstone reservoirs;

Comprehensive evaluation of low permeability sandstone reservoir by geochemistry and well logging-taking Jishan sandstone reservoir of Shanghe Oilfield as an exampIe;

Two retarded acids,SDE-1 and SDE-2,for stimulating sandstone reservoirs are studied experimentally for their performance properties.

An expertise knowledge database is established on the basis of analyses on the static and dynamic geologic data and fracturing parameters obtained from more than 500 wells that have been fractured in sand reservoirs of Zhongyuan oilfield.

The sedimentary facies of Menggulin sand reservoir was analysed according to the datum of core description, electric property, dynamic logging, and production performance of the reservoir.

A thichened,or gelled,mud acid,DXGY1, is developed for removing reservoir blockages in water injection and oil production wells in sandstone oil reservoirs of geological complexity and multiplicity and serious heterogeneity in Dongxin,shengli.

Three mature methods of chemical water shutoff in oil production wells developed for sandstone oil reservoirs of Huabei oil fields,which are featured by complexity in geologic configuration,multiplicity and variety,large difference in physical characteristics,and low well productivity,are reviewed in this article.

Evaluation of sand control experience and effect of sandstone oil reservoir in Shu3 Area;