公开(公告)号：US20200284138A1

公开(公告)日：2020-09-10

申请号：US16807991

申请日：2020-03-03

Applicant: Schlumberger Technology Corporation

Inventor： Adam Ian Bowler ,  Mauro Caresta ,  Benjamin Peter Jeffryes

IPC: E21B47/00 ,  E21B28/00

Abstract: Changes to the vibrational frequencies of a drill string or BHA are monitored for prognostic health monitoring purposes. When one or more orders of resonance frequencies deviate from a baseline frequency, the magnitude of the deviation, and possibly the rate of deviation, is evaluated. When the deviation exceeds a threshold value, an alert is triggered. The alert may be triggered by downhole processing of the vibration data and conveyed to an operator to allow changes in operational parameters or removal of the component from the wellbore. The alert may instead be triggered by post-run processing of stored and dumped data, that can be used to evaluate whether the tool can be re-run, or whether it should be inspected, repaired, or scrapped.

公开(公告)号：US10597942B2

公开(公告)日：2020-03-24

申请号：US15945158

申请日：2018-04-04

Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION

Inventor： Mauro Caresta

IPC: E21B7/06 ,  E21B47/00 ,  E21B47/12 ,  E21B10/42

Abstract: A steering assembly configured for circumferential disposition about a drill string above a drill head and having top and bottom surfaces, an under-gauge peripheral section, and an over-gauge peripheral section substantially opposing the under-gauge peripheral section, where the maximum under-gauge on the top surface in the under-gauge peripheral section is greater than the maximum over-gauge on the bottom surface in the over-gauge peripheral section.

公开(公告)号：US20230142360A1

公开(公告)日：2023-05-11

申请号：US17907551

申请日：2021-03-30

Applicant: Schlumberger Technology Corporation

Inventor： Yuelin Shen ,  Mauro Caresta ,  Scott Richard Woolston ,  Clint William Philbrick

IPC: E21B17/10

CPC classification number: E21B17/10 ,  E21B21/00

Abstract: A torsional damping system includes a housing having an interior space. An inertia ring is located in the interior space, and a torsion fluid is located between the inertia ring and the housing. The inertia ring is rotatably installed relative to the housing. As the housing oscillates, the inertia ring damps at least a portion of the oscillation. The torsional damping system may be included in a downhole tool or bottomhole assembly, and used to damp oscillations along a drill string or along the bottomhole assembly, including between a downhole motor and a cutting tool.

公开(公告)号：US11021912B2

公开(公告)日：2021-06-01

申请号：US16025480

申请日：2018-07-02

Applicant: Schlumberger Technology Corporation

Inventor： Simon H. Bittleston ,  Ashley Bernard Johnson ,  Mauro Caresta ,  Riadh Boualleg ,  Joachim Sihler ,  Huseyin Murat Panayirci

IPC: E21B7/06

Abstract: A drilling system that includes a drill bit that drills a bore through rock. A shaft coupled to the drill bit, wherein the shaft transfers rotational power to the drill bit. A housing that receives at least part of the shaft. A rotary steering system that controls a drilling direction of the drill bit. The rotary steering system includes a steering sleeve that couples to and uncouples from the housing to control a drilling direction of the drill bit.

公开(公告)号：US20200003011A1

公开(公告)日：2020-01-02

申请号：US16025523

申请日：2018-07-02

Applicant: Schlumberger Technology Corporation

Inventor： Joachim Sihler ,  Mauro Caresta

IPC: E21B7/06

Abstract: A directional drilling system that includes a drill bit capable of drilling a bore through rock. A shaft couples to the drill bit. The shaft transfers rotational power from a motor to the drill bit. A steering system controls a drilling direction of the drill bit. The steering system includes a sleeve coupled to the shaft. A steering pad couples to the sleeve. The steering pad forms a steering angle with the drill bit. Axial movement of the steering pad with respect to the drill bit changes the drilling direction by changing the steering angle.

公开(公告)号：US20180283103A1

公开(公告)日：2018-10-04

申请号：US15945158

申请日：2018-04-04

Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION

Inventor： Mauro Caresta

IPC: E21B7/06 ,  E21B47/00

CPC classification number: E21B7/062 ,  E21B10/42 ,  E21B47/00 ,  E21B47/122

Abstract: A steering assembly configured for circumferential disposition about a drill string above a drill head and having top and bottom surfaces, an under-gauge peripheral section, and an over-gauge peripheral section substantially opposing the under-gauge peripheral section, where the maximum under-gauge on the top surface in the under-gauge peripheral section is greater than the maximum over-gauge on the bottom surface in the over-gauge peripheral section.