Local borehole wall lining equipment
Perekryvatel LLC, a subsidiary of System-Service Group of Companies, produces local borehole wall lining equipment.
Details
Local borehole wall lining equipment
Purpose
Designed to cover the intervals of disastrous loss of circulation in an open hole during drilling.Construction
1. Profile liner (longitudinally corrugated pipes)2. Tool for its installation in the well (reamer, underreamer, etc.).
Application
1. Vertical wells 2. Directional wells 3. Horizontal wells.Technologies
Depending on the functional application of the equipment, various modifications of local borehole wall lining equipment are provided (see the table) for:• sequential local overlapping of trouble zones;
• adding length of casing strings from below with pipes with a diameter of 8.63 in without reducing the internal diameter of the well;
• water shut-off before lowering the production casing string;
• separation of individual sections in horizontal wells.
The technology and equipment for local borehole wall lining have more than 40 patents in the Russian Federation and 53 patents in other countries, including the USA, Canada, Australia, China, India, Norway, Japan, Germany, Great Britain, Mexico, Italy, France, etc.
Work principle
During the local borehole wall lining, casings with diameter larger than the diameter of the well are profiled along the entire length and decreased in cross-section so that they can be lowered freely into the well, and increase the diameter of a borehole with expanding reamer up to a diameter of starting (plain) casings in the problem interval. After the profile tie-back casing is lowered into the well on drill pipes, due to the pressure created by drill fluid pumping, profile pipes shall be swedged out to the original size and tightly pressed against the wall of the expanded well section.Advantages
1. Solves the problem of sealing the difficult lost circulation zones.2. Excludes the use of intermediate casing and tie-back casing.
3. Allows to reduce the energy intensity, material consumption, and time for well construction.
Characteristics
Documents
Questions and answers
How to order a service?
Leave a request for the service in one of the forms on the website and you will definitely be called back to clarify the order.
Staffs
Head of the service for the organization of sales of products and services of LLC "Overlap"
Sungatullin Linar Nafisovich
Phone number
E-mail
You also like