Scribd
Upload
158 views1 page

Landing Sub

The document describes a LANDING SUB tool that acts as a no-go device for landing and activating other downhole tools. It has box-up/pin-down connections and large tapered fluted lugs to land on restrictions like liner tops or polished bores.

Uploaded by

nano
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
158 views1 page

Landing Sub

The document describes a LANDING SUB tool that acts as a no-go device for landing and activating other downhole tools. It has box-up/pin-down connections and large tapered fluted lugs to land on restrictions like liner tops or polished bores.

Uploaded by

nano
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
You are on page 1/ 1

LANDING SUB

The LANDING SUB* acts as a “no-go” for landing and activating a multifunction circulating
tool or other devices. Typically, this operation occurs on a liner-top polished-bore receptacle or
on another similar internal-diameter restriction.

The unit is manufactured from one piece with box-up/pin-down drillpipe connections and
comprises a central set of large, tapered, fluted outer lugs.

Features

• Landing on liner top, polished-bore receptacle or other suitable shoulder


• One-piece, rugged construction
• No restriction in internal diameter

Advantages

• Design to be run below a multifunction circulating tool and act as a “no-go” device for
activating the tool
• Fluted body for generous fluid bypass

UBHO Subs
• Description

The Universal Bottom Hole Orientation (UBHO) sub is


used in a directional drilling BHA. Sometimes referred
to as a mule shoe sub, this device is typically run directly
below a drill collar and contains a landing sleeve for
directional survey equipment. This sub is used to
establish the "high side of the tool" which is essential for
knowing the tool's orientation in the wellbore.

You might also like