Virtual Riser for Dual Gradient Drilling

Virtual Riser for Dual Gradient Drilling - Mud Circulating...

Info iconThis preview shows pages 1–5. Sign up to view the full content.

View Full Document Right Arrow Icon
Upper THD TM Package Latched Onto 20 in. Wellhead S/W Supply & Mud Return Lines Mud Circulating System Top Hole Dual Gradient Stabilizes hole to: Improve core quality Run longer total length of OH core Improve success with logging Mud returns to rig for cutting analysis Minimal environmental impact Eliminate “pump and dump” onto seafloor Risk mitigation - Shallow hazard control - Equipment reliability Allows drilling to maximum possible depth with annular control at all times Enhanced safety benefits
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Static Wellbore Pressures SEA WATER HYDROSTATIC PRESSURE PRESSURE D E P T H MUD HYDROSTATIC PRESSURE THDG MUD HYDROSTATIC PRESSURE Conventional THDG FLOATER MUD RETURN RISER TOP HOLE DUAL GRADIENT DRILLING SYSTEM SEA WATER POWER FLUID DRILL PIPE BIT
Background image of page 2
THDG Virtual Riser System
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Options Option 1. Deploy Mud Lift pump (MLP) and connect to wellhead connector-- analogous to drilling open hole sections prior to setting surface conductor. Option 2. Subsea shutoff device (SSOD),
Background image of page 4
Image of page 5
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 10/30/2011 for the course PETROLEUM 689 taught by Professor Jeromej.schubert during the Fall '11 term at Texas A&M University-Galveston.

Page1 / 7

Virtual Riser for Dual Gradient Drilling - Mud Circulating...

This preview shows document pages 1 - 5. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online