Spiralling tapered slip-on drill string stabilizer

Patent · Tue Dec 23 00:00:00 EST 1986

OSTI ID:6986264

Beasley, T R; Teng, C C

A stabilizer is described for use in a drilling string comprising: a substantially cylindrical body member having a central passageway to accommodate the drill sting, the inside surface of the body member defining a right-hand spiralling thread with a tapered trailing edge which spirals from a starting point on the body member. The thread terminates internally of the body member in an arcuate recess extending around the interior of the body member; a key member is secured to the inner wall surface of the recess of the body member, the key member having a lug extending longitudinally of the body member within the recess; a slip member adapted to thread within the body member between the body member and the drill string. The slip defines a right-hand thread with a matching tapered trailing edge configured to make up with the right-hand thread on the body member and to wedge between the body member and the drill string. One end of the slip terminates in a longitudinally disposed shoulder capable of abutting the lug upon threading of the clip within the body member.

• Assignee: Dailey Petroleum Services Corp., Conroe, TX
• Patent Number(s): US 4630690
• OSTI ID: 6986264
• Resource Relation: Patent File Date: Filed date 12 Jul 1985
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
03 NATURAL GAS
42 ENGINEERING
DRILL BITS
STABILIZATION
DRILL PIPES
WELL DRILLING
NATURAL GAS WELLS
OIL WELLS
THREADED JOINTS
DRILLING
DRILLING EQUIPMENT
EQUIPMENT
JOINTS
PIPES
WELLS
020300* - Petroleum- Drilling & Production
030300 - Natural Gas- Drilling
Production
& Processing
420206 - Engineering- Mining & Drilling Equipment & Facilities- (1980-1989)