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Sinopec News Network News Zhuanghai 26 side well is a key oil test well in Shengli Offshore.
The well area is located in the Zhuanghai area of Shengli Offshore.
It has multiple geological faults and has good conditions for oil and gas migration
.
This oil test operation can test the development of turbidite sand bodies in the front of the Yellow River Delta and explore the hydrocarbon-bearing situation of structural traps
The wellbore of Zhuanghai 26 has a complicated structure.
There are three types of casings from the well head to the bottom of the well.
The well depth is more than 4000 meters.
Especially the well shows high formation pressure during the drilling process, and it is judged that the oil test has the ability of spouting
.
Each type of casing in this well needs to be treated separately, and the well depth is adjusted, resulting in a very long wellbore processing time in this well
In order to ensure the progress of the construction, the 5 teams of Shengli Downhole Operation Company responsible for the construction of the construction, optimized the selection of tools, optimized the wellbore processing procedures, and scientifically shortened the wellbore processing time
.
During construction, the team checked the quality of the incoming well fluid, strictly inspected the quality of the tools and tubing entering the well, and qualified the pressure test of the pipe string, wellbore, and flow according to the design
The first oil test zone of the Zhuanghai 26 side well is located in the 114.
3 mm casing.
There is a risk of obstruction when the tools pass through the casing hanger, especially the 68 perforating gun cannot withstand pressure.
The construction team carefully calculated that the perforating gun reached 114.
3 mm.
The position of the casing hanger reduces the drilling speed in advance and lowers the pipe string slowly to ensure that the gun body does not suddenly press on the hanger, but with the help of the lower chamfer of the gun body to smoothly enter the casing through the hanger
.
In this construction, the oil test team 5 overcome a series of difficulties, and through strict quality control, finally successfully lowered the triplex pipe string of the first layer into the predetermined position, and the perforation test and other constructions proceeded smoothly
.
After the perforation, the fluid cushion sprayed to the wellhead as soon as the well was tested, indicating that the oil test of the Zhuanghai 26 lateral well has achieved phased results.
