Odfjell Technology enables Hunt Oil Company of Romania to achieve European depth record for casing while drilling

Published 27.11.2023

Odfjell Technology, an integrated supplier of offshore drilling and well operations, has enabled Hunt Oil Company of Romania to reach a European depth record for 20’’ casing while drilling (CwD).

Hunt Oil set out to mitigate possible surface hole hazards like shallow gas, formations sensitive to swabbing, tight hole, loss of circulation and have the benefit of time saving for the surface section of its Macoveiu 3900 well, located at Buzau, Romania. Casing while drilling was selected as the solution to these challenges.

During job planning, a cap was set on the maximum achievable working flowrate, due to rig surface equipment limitations. This flowrate ceiling was lower than what was required for optimal operational performance, so this scenario required additional analysis of the drill bit performance, the wellbore hydraulics and hole cleaning. The existing 20” casing by 24” bit design was analysed, optimized, and validated for the expected conditions.

A CwD record-breaking depth of 798m below rotary was recorded, alongside a range of other benefits.

By implementing Odfjell Technology’s CwD services, Hunt Oil reduced the number of runs required, with a significant saving on time and cost, thanks to the elimination of conventional bottom hole assembly handling and tripping times. Hunt Oil was able to achieve its drilling objectives on this 24” section by using Odfjell Technology’s casing running tool (CRTi), torque turn computers, manual handling tools, hydraulic power tongs with high torque capacity and power packs.

“Enabling a European record CwD performance for this project is further proof that Odfjell Technology is a prime choice for the delivery of industry-leading well services – from planning and materials to execution,” said Elisabeth Haram, EVP Well Services at Odfjell Technology. “As an established CwD provider in this region, Odfjell Technology’s suite of well services has a track record of saving our customers substantial hours and costs on complex and varied projects.”

“Challenges associated with planning and engineering turned to opportunities that led to this achievement and setting new milestones. The main challenges were shallow gas, swab, and hole stability. All of our objectives were achieved due to excellent team collaboration and continuous effort. Casing while drilling was executed safely with no recordable incidents or accidents. We much appreciate everyone’s effort and support for such an outstanding achievement. This project exemplifies the power of effective communication and teamwork,” said Ciprian Rotareanu, Operations Superintendent at Hunt Oil Company of Romania.

About Odfjell Technology:

Odfjell Technology has five decades of experience operating worldwide, serving offshore and onshore markets. The company’s integrated business model enables it to provide a comprehensive portfolio of products and services designed to create value for clients. Its highly competent, dedicated and experienced workforce is well equipped to find solutions to the challenges of today and tomorrow. The energy transition is one of today’s greatest challenges. Odfjell Technology’s vision is to use its heritage and expertise to support the industry as it transitions to new energy solutions. To find out more about Odfjell Technology and its services, please visit

See all Activities