Packer Protection Research And Application In The Construction Of Wells Pressure Measurement In Qian’an Oilfield

In recent years，Qian An oilfield’s success rate of layered pressure measurementconstruction is lowe, the admission of the reservoir pressure、temperature’s data is not highavailability. Analysis in recent years to stem the security layered the manometry constructionfailure cases, and found that the main reason for the construction failure is: column difficultand packer failure, caused by the column difficult and packer failure is the main factor: shaftdeformation，column peristalsis and hydraulic shock effect. Shaft deformation will cause thecolumn difficult when it’s go down the well, the packer cones scratch packer Mifengbuyan;column peristalsis cause the damage of the packer; liquid impact efficiency can also cause thescratching of the packer, so measured construction for the packer protection is particularlyimportant.For the problems, we studied a series of hierarchical manometry new technology, fieldtrials, and ultimately identified: measuring the four-arm caliper, simulated manometriccolumn, the protection of large diameter couplings, four cones small diameter seal packers,tubing anchors, single stream where Seoul and once to suppress the packer method ofapplication. Measured the walls of the caliper to determine the wellbore whether with themanometry conditions; analog manometry string scraping, to remove the debris of the casingwall while ensuring that the manometric column Difficult; the application of small diameterpacker minus the packer and the casing wall friction; protective collar can protect the packer,the alternative to packer force; the four cones packer, the packer and the casing wall sealing;tubing anchor minus small packer column to peristalsis packer injury; single-stream where theSeoul can reduce the effect of liquid impact; suppressed once the packer, reduced motilitycaused by the pressure change on the column.New pressure measurement processes before manometry column to go down, go downthe process, by reducing the chance of friction of the packer and the casing to go down afterthe protection device alternative to packer force, increasing the liquid flow area, less sit sealcolumn when the peristalsis, increase the packer and the casing seal these measures to ensurethe success of the load construction, made good use in the field effect.