Full-opening annulus pressure operated sampler valve with reverse circulation valve

Patent · Tue Dec 20 04:00:00 EST 1977

OSTI ID:6817802

Jessup, R L

A normally open oil well sampler valve which provides a fully open testing flow path therethrough is presented, wherein the sampler valve is closed under hydraulic control after a predetermined pressure increase in the well annulus pressure. The sampler includes two spaced apart ball valves having a sample chamber therebetween. The operating mechanism moves the ball valves from the open to the closed position simultaneously, and provides a hydraulic lock as well as a mechanical lock to prevent the balls from reopening in the well. The apparatus further includes a circulation valve which is opened after the closing of the sampler valve. One of the ball valves of the apparatus may be selectively removed to provide a single ball, safety closure valve when a well fluid sample is not desired.

• Assignee: Halliburton Co.
• Patent Number(s): US 4063593
• OSTI ID: 6817802
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
ANNULAR SPACE
CLOSURES
CONFIGURATION
EQUIPMENT
HYDRAULIC EQUIPMENT
LABORATORY EQUIPMENT
OIL WELLS
SAMPLERS
TESTING
WELLS