Would you like to start a free subscription?
Remember me | Forgot password
For full content view: Log in Now!
In a High-Pressure, High-Temperature (HPHT) cleanout operation, a Hydraulic Workover Unit (HWU) was used to clean out the production tubing to allow isolation barriers to be installed. The wells had been shut in for some time following production of reservoir solids.
In rig-assist mode, the HWU deploys pipe against surface pressure with the jackup drilling rig providing pipe-handling support. Detailed planning and risk assessment were required during operations because well conditions changed. Some equipment problems required a review of planned operations, and onshore tests were carried out before mobilization for the intervention project’s second phase.
Modifications were required to the HWU to withstand the high buckling loads associated with snubbing against high pressure. Additionally, special downhole tooling was required to accommodate extreme well conditions. This article discusses the development work involved and the subsequent performance of the equipment. Operating performance statistics and lessons learned are presented.
This area of the site is restricted.
In order to gain access, please either Log
In, or subscribe to World Oil.
Two options are available to you for creating an account.
1. Get a Free Trial Subscription to World Oil Magazine and gain immediate access to select content on World Oil Online.
Start a Free Trial Subscription and gain immediate access to the complete current issue of World Oil Magazine. Plus, you’ll receive 3 upcoming issues of World Oil Magazine in print or digital format.* You also receive access to the Energy Events Calendar, Industry Statistics and WO Wire’s news and industry coverage.
2. Purchase a subscription to World Oil magazine and gain immediate
and complete access to World Oil Online. As a Total Access subscriber
you will have access to all areas of the site available to registered users and
free subscribers as well as having access to such premium content areas as:
Physical copies of this content may be available for purchase. Visit the Reprints & Back Issues section.
If you are already a paid subscriber and do not have access, please email CustomerService@worldoil.com.
World Oil's specialized upstream Engineering Data Tables featuring the Drill Bit Classifier, Tubing Tables and more. Get Total Access today.
Tel Aviv - March 10-12
London - March 11-13
Kuala Lumpur - March 25-28
All material subject to strictly enforced copyright laws.
© 2014 World Oil. © 2014 Gulf Publishing Company.