--- title: Case Study: Rock-to-rock remediation operations using PWC® and hydraulic work-over unit (HWO). description: Check out our latest case study demonstrating how HydraWell flawlessly executed PWC® operations from Hydraulic Workover Unit for a major UKCS Operator image: https://blog.hydrawell.no/hubfs/Hubspot%20Case%20Study%20May%202021%20v2-1.jpg --- [![HydraWell home](https://blog.hydrawell.no/hs-fs/hubfs/hydrawell_logo_lockup_black.png?width=1920&height=522&name=hydrawell_logo_lockup_black.png "HydraWell home")](https://www.hydrawell.no) Search ## Case Study: Rock-to-rock remediation operations using PWC® and hydraulic work-over unit (HWO). ![](https://cdn2.hubspot.net/hubfs/2040891/Marketplace/WASABI/icons/icon-calendar.svg) *By Calum Smith - May 25, 2021* After a review of a historic well data, a major UKCS Operator identified the requirement for remedial barrier placement on several of the platform wells to be permanently abandoned. Due to the small platform footprint and available deck space, a P&A specific Hydraulic Workover Unit (HWO) was chosen by the client as the optimal solution for performing the downhole operations.  Check our out latest case study, linked below, which outlines, in detail how HydraWell flawlessly executed PWC operations from HWO® unit for the client.  --- [![Read the full Case Study](https://no-cache.hubspot.com/cta/default/4835018/3a1aa73c-ec4c-4758-8988-9b0cd4c7b78c.png)](https://cta-redirect.hubspot.com/cta/redirect/4835018/3a1aa73c-ec4c-4758-8988-9b0cd4c7b78c) ### Recent Posts Comments ### Sign Up for our Blog We promise that we won't SPAM you. #### [What's next?](https://www.hydrawell.no/) #### [Recent blogs](https://blog.hydrawell.no/) [![HydraWell secures a long-term contract with Dutch well specialist WellGear](https://blog.hydrawell.no/hubfs/HW%20Contract%20with%20WellGear_April2026.jpg) **HydraWell secures a long-term contract with Dutch well specialist WellGear** 21 April 2026 ](https://blog.hydrawell.no/news/hydrawell-secures-a-long-term-contract-with-dutch-well-specialist-wellgear) [![Perforate, Wash and Cement (PWC®) - CFD-Driven Validation with HydraHemera™](https://blog.hydrawell.no/hubfs/CFD%20Case%20study.png) **Perforate, Wash and Cement (PWC®) - CFD-Driven Validation with HydraHemera™** 27 January 2026 ](https://blog.hydrawell.no/news/perforate-wash-and-cement-pwc-cfd-driven-validation-with-hydrahemera) #### Subscribe Get the latest knowledge articles and news right into your inbox. #### Subscribe to Blog or News [![Subscribe](https://no-cache.hubspot.com/cta/default/4835018/d7232604-02c4-46a5-9009-b9d2e0a754a5.png)](https://cta-redirect.hubspot.com/cta/redirect/4835018/d7232604-02c4-46a5-9009-b9d2e0a754a5) #### [Contact us](https://www.hydrawell.no/contact-hydrawell) HydraWell (HQ) Norsea Base, Bygg 104, N-4056 Tananger, Norway #### [Privacy Policy](https://www.hydrawell.no/privacy-policy) All rights reserved | 2026 | © Hydra Well Intervention AS | Made by [Leadify](https://leadify.no)