lost circulation

[′lȯst ‚sər·kyə′lā·shən]

(petroleum engineering)

A condition that occurs when the drilling fluid escapes into crevices or porous sidewalls of a borehole and does not return to the collar of the drill hole. Also known as lose returns; lose water; lost returns; lost water.

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'The TerraSphere service delivers geological and geomechanical data that not only saves logging time and related rig costs, but also reduces the potential risk for lost circulation of drilling muds into formation fractures.'

Schlumberger Introduces High-Definition Dual-Imaging-While-Drilling Service for Oil-Based Mud

"It was spring of 2015 and I recall working in the yard when I could only work for one or two minutes and had to rest for five to 10 minutes because I lost circulation. Weeks later, I remember getting in the car.

Steps toward a new normal

He said: "My dog fell really ill, unfortunately it couldn't eat its food, it got put on a glucose drip and got fed through its paw and when they took the drip out the paw got infected, and when they bandaged it up it was too tight and it lost circulation and its paw was infected.

Stephen Bear's neighbour brands him 'ignorant pig' and accuses him of neglecting his puppies as they 'call RSPCA'; The former Celebrity Big Brother winner regularly posts pictures of his Rottweiler puppies Ronnie and Reggie

It absorbs hundreds of times its weight in water and is used primarily as a lost circulation material for HDD.

Drilling fluids guide

The transaction includes New Fluid Solutions' line of drilling fluid additives, including lost circulation materials, emulsifiers, lubricants and shale inhibitors used in both onshore and offshore drilling operations.

Omnova Acquires Oil and Gas Drilling Fluid Additives Company

"The 500th run of the DAV MX, in particular, cured 400 bbls per hour losses for an operator by allowing more than 400 bbls of coarse lost circulation material through.

500th run of DAV MX hailed

can process raw hemp which can be used to make paper, fabric, cellulose plastics, materials used extensively in well drilling to prevent lost circulation, material for toxic spill cleanup; and, highly insulating building products such Hempcrete, to name a few.

Visionary Pioneers in the HEMP Industry Are Converging at "The HempZone", Being Held "Inside" The Rockies Venture Club Cannabis Capital Summit in Denver on May 29, 2014

Aged just eight months old, little Noah's tiny body was ravaged with meningitis septicaemia after he fell ill at home and in the critical days that followed whilst trying to battle the virus, his body lost circulation to his extremities causing some of the tissue to die.

Look at me now! Noah steps out after losing a leg to meningitis; REAL LIFE STORIES Noah Stephenson had to have his lower leg amputated after contracting killer virus meningitis aged just eight months. A year on, his parents Gareth and Nicki tell Rachel Mainwaring how he's taking it all in his stride

In the critical days that followed, his tiny body tried to battle the virus, and he lost circulation to his extremities causing some of the tissue to die.

Little Noah makes strides to recovery; Noah Stephenson had to have his lower leg amputated after contracting meningitis as a baby. A year on, his parents Gareth and Nicki tell Rachel Mainwaring how he's taken his first steps - and hasn't stopped since..

ST-1 had recorded flow rates averaging 1,290 barrels per day including oil to surface before the test string was blocked by lost circulation material.

Tunisia: Cooper Energy to drill second sidetrack at Bargou Permit

- Drilled 8 1/2" hole to 2,821.8mMDRT - lost circulation in Baong sands, treated zone with LCM

MEO Australia Limited (ASX:MEO) Seruway PSC - Gurame SE-1XST Progress Report No. 10