Open AccessSimulation and Design of Multistage Unlimited Packers in Horizontal Wells
Author(s) -
Lo Yang,
Ping Jiang,
Guicai Zhang
Publication year - 2020
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 - 10.1088/1755-1315/585/1/012160
Subject(s) - piston (optics) , petroleum engineering , wellbore , software , coiled tubing , engineering , mechanical engineering , computer science , physics , wavefront , optics , programming language
The staged fracturing technology for horizontal wells has successfully promoted the development of unconventional oil and gas, but it faces the challenges of rapid production decline in oil and gas wells. Studies on the multistage unlimited fracturing technology, that is, the existing fracturing tools are redesigned, the fully bored wellbore can be modified, any number of stages can be designed, and the technical advantages such as maximizing reservoir reconstruction can be achieved. The conventional packers cannot achieve the multistage unlimited fracturing, the packers are redesigned in this study. Through the Solid works software, the single use pin is transformed into a one-way internal tooth and a locking mechanism of the card board. The structure can be hydraulically applied to the piston, and the piston drives the internal teeth of the sealing sleeve to perform locking and adduction, so as to achieve repeated setting and unsealing of the packer. By means of ANSYS software and finite element calculation method, it is verified that the designed packer meets the third strength theory and safety requirements.