The pocket-slip rotatable liner hanger (PST-D/R) is part of the COLOSSUS CMT cemented liner hanger system. It is designed to be run in well applications that require tight annular clearance and meets the requirements to hang extremely heavy liners in heavy-wall casing. It features an integral tieback receptacle (TBR) and either a drillable or rotational cement bushing (DCB or RCB).

The PST-D/R also features a bypass that reduces equivalent circulating density to a low level. Its tongue-in-groove slip design also minimizes running interference and reduces the potential of casing deformation after it is set. Drive slots in the liner top permit rotation while running into the well, enabling navigation around obstructions.

Applications

• Wells that require tight annular clearance
• Wells that require hanging extrmely heavy liners in heavy well casing
• Wells that reequire rotation while running in hole to navigate around obstructions
• Hanging lines in low-strength, non- cemented or multistring casing where thorought load distribution is critical
• Offshore and deepwater wells

Features

• Large fluid bypass area aids hole clearing, reduces ECD, and decreases trip time
• Slip design that minimizes stress in supporting casing and eliminates cone collapse
• Compatibility of slip design and hardness with high-grade casing
• Drive slots in liner top to permit orientation around obsturctions while running in hole
• Internal and external bypass fluid
• Integral design eliminates potential leaks and thread upset
• Optional or dual hydraulic and/or mechanical setting
• Heavy wall tubular alloy steel consturction design specifically to hang heavy liners
• Optional drillable or rotational cement bushing

Source : https://www.slb.com/completions/well-completions/liner-hangers/pst-dr-pocket-slip-rotatable-liner-hanger

Schlumberger

Established in the year 1926, Schlumberger is the world’s first well logging company. Recognized as one of the leading oilfield services companies in the world, Schlumberger is a major supplier of technology for reservoir characterization, drilling, production, and processing to the oil and gas industry. The Houston-based firm has a global footprint with offices in more than 85 countries and employing approximately 100,000 people.

Schlumberger’s product portfolio encompasses the most comprehensive range of products and services. It offers services such as exploration through production and integrated pore-to-pipeline solutions. The oilfield services giant has shown strong commitment towards technology and innovation, through a network of technology centers around the world.