Downhole deployment valves

• Main Authors: SMITH, PAUL L, PAVEL, DAVID, GRAYSON, MICHAEL BRIAN, NOSKE, JOE, BRUNNERT, DAVID J, IBLINGS, DAVID
• Format: Patent
• Language: English; French; German
• Published: 19.12.2012
• Subjects: EARTH DRILLING; EARTH DRILLING, e.g. DEEP DRILLING; FIXED CONSTRUCTIONS; MINING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS

Methods and apparatus enable reliable and improved isolation between two portions of a bore extending through a casing string disposed in a borehole. A downhole deployment valve (DDV) may provide the isolation utilizing a valve member such as a flapper (1702) that is disposed in a housing of the DDV...