案例研究 Expandable steel patches restored casing integrity for sidetracking after cement squeezes proved ineffective
Enabled production from existing slot in mature field despite fully penetrating casing wear across 26 ft.
全国最大的快3平台-全国快3信誉最好的老平台
在套管损坏后恢复完井完整性
Casing damage is often considered a problem of mature wells, suffered only after years or decades of corrosion, 侵蚀, 或磨损疲劳, 然而, it is increasingly occurring in newer wells because of the wear incurred while installing initial casing in long horizontal and tortuous wellbores.
Casing repair options depend on the size and condition of the casing, 泄漏或损坏的深度和程度, 以及油井的生产率(经济). Schlumberger offers a full range of casing isolation, repair, and replacement technologies.
Squeeze cement into the damage to restore isolation without impeding wellbore ID, or place a cement plug or mechanical packer or plug to isolate the damaged zone.
Run a patch through tubing across the damaged zone, and isolate the damaged casing by cementing it in place or inflating it to create a complete seal while retaining nearly full wellbore ID.
适用于油气井套管泄漏修补, 穿孔关闭, and tubing repair and geothermal well integrity restoration. 视图
Save time and reduce costs and emissions by using an expandable steel patch to reliably seal off a perforated zone without restricting production from neighboring perforations or access to the wellbore below.
会给出, 可持续发展的, lower-cost alternative to cement squeezing using a rig, 作业装置, 或CT. 视图
Cut off the damaged casing and leave a stub that can be connected to a new casing string.
