Application of stratified pressure measurement in oilfield development

At the later stage of the thin oil development in Henan oilfield,the focus of developing and tapping the latent power turns from the major reservoir to minor ones,and according- ly the regular techniques of pressure measurement fail to meet the requirements of oil field development and dynamic analysis.For this reason,a stratified pressure measurement for producing wells is studied and obtained independently. The technique consists of packer,working barrel of pressure measurement and other tools.In the technique,the dropping pipe strings for stratified pressure measurement is put into wells in the borehole;the blanking plug and manometer are laid down from the decentralized wellhead by using the annu- lus test method to seal off the subject reservoir and to meas- ure the stratified pressure recovery curve of pay off.Finally, the discharge situations of all strata are obtained through the analysis on all the measured stratified pressures of pay off, which provide the basis of later adjustment of development.