Well perforating apparatus including an underbalancing valve

Patent · Tue Oct 14 00:00:00 EDT 1986

OSTI ID:5097202

Stout, G W; Myers, Jr, W D

A well perforating apparatus is described which consists of: a tubing-carried perforating gun positionable adjacent a production formation, the gun having an impact detonatable primer at one end and a tubular conduit connectable between a tubing string and the top end of the perforating gun. The apparatus also includes at least one pair of axially aligned radial holes in the well of the tubular conduit and a frangible member traversing the bore of the tubular conduit. The ends of the frangible member are slidably and sealingly mounted in the radial holes, whereby the dropping of a detonating bar through the conduit to detonate the primer breaks the member and opens the radial holes to pressured fluid flow from the perforated production formation.

• Assignee: Baker Oil Tools, Inc., Houston, TX
• Patent Number(s): US 4616701
• OSTI ID: 5097202
• Resource Relation: Patent File Date: Filed date 06 Jun 1985
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
03 NATURAL GAS
NATURAL GAS WELLS
PERFORATION
VALVES
OIL WELLS
DRILL PIPES
FLUID FLOW
GUNS
PRESSURIZING
SEALS
CONTROL EQUIPMENT
DRILLING EQUIPMENT
EQUIPMENT
FLOW REGULATORS
PIPES
WELLS
020300* - Petroleum- Drilling & Production
030300 - Natural Gas- Drilling
Production
& Processing