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Improving The Development Efficiency of Low-Permeability Reservoirs and Hard-To-Recover Reserves with The Introduction of Recoverable Liners Technology in Horizontal Wells with Multi-Stage Hydraulic Fracturing
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, Horizontal Wells 2021, May 2021, Volume 2021, p.1 - 5
Abstract
Summary
Objective of the project is to introduce a new type of uncemented liner «Smart-liner» in wells with multistage hydraulic fracturing using the extraction of a part of the liner from the T1 zone to the adapter, in order to implement the 2nd horizontal wellbore with drilling from T1 with deviation in azimuth of the wellbore. This technology will increase the efficiency of the development of low-permeability reservoirs. The method assumes adaptation and revision of existing liners with multistage hydraulic fracturing assemblies with division of a single assembly into 2 parts. The first part with hydraulic fracturing sleeves is lowered into the horizontal wellbore, while it has a connecting unit for docking with the second part of the liner at T1. The second part is lowered on the next trip, while it has a connecting unit with the first part in the zone T1 of the well and has a removable liner hanger packer on the adapter head, which in the future will be possible to extract by the workover team. In the process of developing reserves, a moment comes after which the question of the implementation of the second horizontal wellbore is considered.
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