Ongoing challenges are caused by incomplete data, deterioration in the integrity, and condition of the construction components
Side tracking effectively prevents any future re-entry into the original, primary, wellbore.
It is good practice to have at least two barriers between the hydrocarbon bearing formation and the environment. However, the barriers can often be compromised.
When the logging image shows neither cement, nor creeping formation, the wellbore/annulus must be remediated.
A subsea well which was to be abandoned, had a live annulus which required to be isolated before the full abandonment could be safely completed. Isolation had to be achieved without damaging the external casing.
This client had previously installed four barriers with the conventional section milling that took more than 40 days. A close collaboration between the client and HydraWell was awarded with four plugs installed in just 8.8 days.
The production casing cement job goes on losses and you are left with a well not in compliance with regulations. You have two choices to salvage the well;
i) A costly re-sidetrack of the well, or
ii) Utilise HydraHemera™ PWC® from HydraWell.
"I have been working with Hydrawell for the past 7 years and I have always been impressed by the forward-thinking nature of this company, the competency and dedication of its people, both onshore and offshore, the reliability of its tools and the quality of the work it performs days in and days out. This company inspires confidence"
"AkerBP used HydraWell’s Hydrahemera jetting PWC tool throughout the entire 4-year P&A campaign on Valhall DP, and with great success. Thanks to learnings kindly shared by ConocoPhillips, which pioneered the use of this technique, and to a close collaboration with Hydrawell, the time to restore barriers in a critical part of the overburden on Valhall dropped from 12 days down to 2.1, resulting in significant time and money savings."
"Impressed by their forward thinking nature"
"I am very pleased with the simplicity of the HydraHemera™ PWC® operation"
"The most robust plugging method I have ever seen"
"HydraWell´s HydraHemera™ jet-washing PWC® method saved us $15m in rig time over four wells"
"HydraWell´s PWC® technology reduced our well abandonments from 12 to 2.1 days!"
Historically, three basic methods have been used to achieve an annular barrier. Each carries the risk of technical failure or of significant delays and increased cost beyond the forecast.