Full bore sampler valve apparatus

Patent · Tue Nov 19 04:00:00 EST 1985

OSTI ID:5755908

Meek, D E; Upchurch, J M

In accordance with an illustrative embodiment of the present invention, a full-bore sampler and safety valve apparatus includes a housing having an actuator mandrel slidably arranged therein, axially spaced normally open ball valve elements mounted on the mandrel assembly and cooperable with fixed eccentric pins on the housing for simultaneously closing a flow passage extending through the housing when the mandrel assembly is shifted from one axial position to another, a hydraulically operable piston on the mandrel assembly normally subject to balanced pressures, and means responsive to a predetermined pressure of fluids in the well annulus for exposing the hydraulically operable means to well pressure to cause shifting of the actuator mandrel assembly and simultaneous closing of the ball valve elements.

• Assignee: Schlumberger Technology Corp.
• Patent Number(s): US 4553598
• OSTI ID: 5755908
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
03 NATURAL GAS
030300 -- Natural Gas-- Drilling
Production
& Processing
CONTROL EQUIPMENT
DESIGN
DRILL STEM TESTING
EQUIPMENT
FLOW REGULATORS
FLUID MECHANICS
HYDRAULICS
MECHANICS
PISTONS
SAMPLERS
SLEEVES
TESTING
VALVES
WELL LOGGING EQUIPMENT