公开(公告)号：US20210403789A1

公开(公告)日：2021-12-30

申请号：US17291627

申请日：2019-11-08

Applicant: Schlumberger Technology Corporation

Inventor： Damian R. Vickers ,  Chemsseddine Bouguetta

IPC: C09K8/36 ,  E21B33/14 ,  E21B21/00

Abstract: A method of drilling a wellbore may include drilling the wellbore using a wellbore fluid that has rheological property values for 6 rpm, 10 minute gel, Yield Point, and/or 10 minute-to-10 second gel ratio that are +/20% of the mean values across a temperature range from 40° F. to 300° F.; and conditioning the wellbore with less than 2 hole volumes. The wellbore fluid may include an oleaginous external phase; a non-oleaginous internal phase; an amidoamine emulsifier stabilizing the non-oleaginous internal phase within the oleaginous external phase; at least two oil wetting agents; a rheology modifier; and a weighting agent having a d50 ranging from 5 to 10 μm.

公开(公告)号：US11203910B2

公开(公告)日：2021-12-21

申请号：US16923429

申请日：2020-07-08

Applicant: CHINA UNIVERSITY OF PETROLEUM—BEIJING

Inventor： Yanbin Wang ,  Deli Gao ,  Jun Fang ,  Jing Zeng

IPC: E21B33/043 ,  E21B23/01 ,  E21B34/04 ,  E21B7/12 ,  E21B33/12 ,  E21B33/14

Abstract: A casing hanger and annulus sealing device running tool for deepwater drilling and a method for using the same. The running tool includes a spindle connected to a hollow suspension structure via a torque transmission structure, one end of the spindle slidably passes through a hollow piston, the suspension structure rotates with the spindle and slide along the piston, the inner cavity of the torque transmission structure communicates with that of the suspension structure to form a piston cavity; the piston cavity and the piston form a hydraulic piston structure; and one end of the suspension structure away from the torque transmission structure can rotatably hook to and lift upward to release the annulus sealing device, and one end of the piston away from the torque transmission structure can radially expand to hook to the casing hanger and can radially contract to release the casing hanger.

公开(公告)号：US11199060B2

公开(公告)日：2021-12-14

申请号：US16082074

申请日：2016-03-01

Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION

Inventor： John Mervyn Cook ,  Quanxin Guo ,  Paul William Way ,  Louise Bailey ,  Simon James ,  Salim Taoutaou

IPC: E21B21/00 ,  C04B20/00 ,  C04B28/02 ,  C09K8/36 ,  C09K8/487 ,  C09K8/504 ,  E21B33/138 ,  E21B33/14 ,  G01N3/12

Abstract: Methods for drilling a wellbore into a subterranean formation include preparing a drilling fluid and circulating the drilling fluid in the wellbore while drilling in the subterranean formation, forming a filtercake from the drilling fluid, creating or encountering one or more fractures in the subterranean formation while drilling, and allowing a portion of the filtercake formed to at least partially seal the one or more fractures while continuing the drilling.

公开(公告)号：US20210372217A1

公开(公告)日：2021-12-02

申请号：US16890860

申请日：2020-06-02

Applicant: Halliburton Energy Services, Inc.

Inventor： Gunnar Lende ,  Torleik Hervik Kleppa

IPC: E21B27/02 ,  E21B33/14 ,  E21B34/06 ,  E21B34/10

Abstract: A system and method for injecting bailer content utilizing a dump bailer having an elongated, flexible bailer receptacle secured between a head assembly and an injection assembly. Disposed within the dump bailer are first and second piston assemblies, each of which includes a piston having a central fluid passage with a pressure actuated flow control mechanism in the form of a rupture disk disposed along the fluid passage of the piston. An electric, positive displacement pump within the head assembly draws wellbore fluid into the dump bailer assembly to drive the first piston assembly towards the second piston assembly so as to release bailer content into a wellbore. The elongated flexible bailer receptacle may be a hose stored on a bailer receptacle reel, which hose may be paid out by the reel to a length that corresponds with a volume of bailer content to be released into the wellbore.

公开(公告)号：US11187072B2

公开(公告)日：2021-11-30

申请号：US16642498

申请日：2017-12-22

Applicant: Halliburton Energy Services, Inc.

Inventor： Luke Christopher Downey ,  Christopher Lee Stokely ,  John Laureto Maida ,  John Paul Bir Singh ,  Lonnie Carl Helms

IPC: E21B47/005 ,  E21B33/14 ,  E21B34/06 ,  E21B23/14 ,  E21B47/135

Abstract: A flow assembly is deployed downhole in a casing for a cementing operation. The flow assembly has a spool with an optical cable. As cement is pumped downhole and through the flow assembly, a dart attached to the optical cable on the spool is dragged with the flow of cement. Cement flow is stopped based on signals along the optical cable that the dart is at a desired location downhole.

公开(公告)号：US11187061B2

公开(公告)日：2021-11-30

申请号：US16080882

申请日：2017-11-13

Applicant: Halliburton Energy Services, Inc.

Inventor： Mark C. Glaser

IPC: E21B43/10 ,  E21B23/02 ,  E21B33/12 ,  E21B33/14

Abstract: A method for securing a downhole assembly to a casing string disposed within a wellbore includes moving, in a first direction, at least a portion of the downhole assembly within a passageway of a landing nipple that forms a portion of the casing string; exchanging a wireless signal between a first communication device that is coupled to the downhole assembly and a second communication device that forms a portion of the nipple; and preventing further movement of the downhole assembly, relative to the nipple, in the first direction in response to the exchange of the wireless signal and when the first communication device is spaced from the second communication device in the first direction.

公开(公告)号：US20210355782A1

公开(公告)日：2021-11-18

申请号：US17375501

申请日：2021-07-14

Applicant: Saudi Arabian Oil Company

Inventor： Ali A. Hijles

IPC: E21B33/14 ,  E21B34/14 ,  E21B33/16

Abstract: A stage cementing tool includes a housing configured to couple to a casing and having a central bore therethrough, a first plurality of ports arranged on a radial surface of the housing and configured to fluidly connect the central bore and an annulus of a wellbore, a second plurality of ports arranged on the radial surface of the housing uphole of the first plurality of ports and configured to fluidly connect the central bore and the annulus of the wellbore, an expandable element coupled to the housing between the first plurality of ports and the second plurality of ports, and a sleeve. The sleeve is moveable from a first position on the housing to a second position on the housing to fluidly disconnect the central bore and the annulus through the first plurality of ports and fluidly connect the central bore and the annulus through the second plurality of ports.

公开(公告)号：US20210324847A1

公开(公告)日：2021-10-21

申请号：US17363277

申请日：2021-06-30

Applicant: SANJEL ENERGY SERVICES INC.

Inventor： Ben Mattock ,  Charlie Eykelbosh ,  Jeff Spence ,  Josh Seens ,  Liguo Zhou ,  Daniel Blair Fisher ,  Bilal Abdurahman ,  Neville Dholoo

IPC: F04B49/08 ,  F04B1/00 ,  E21B33/14 ,  F04B49/22

Abstract: A slow rate pumping system which includes a discharge line to receive a discharge flow of displacement fluid from a high rate pumper, a return line off of the discharge line to receive a return flow of displacement fluid, a slow rate diversion pumping line off of the discharge line for supplying a diversion flow of displacement fluid downhole, a return valve to control the return flow, and a diversion valve to control the downhole flow. A method of supplying a slow rate flow which includes receiving a main pumping flow through a return line at a pumping pressure, producing a differential pressure between the pumping pressure and a downhole pressure matching a differential setpoint, diverting a slow rate flow of fluid from the main flow using a diversion line off the return line prior to the return valve, and maintaining the differential pressure.

公开(公告)号：US11143014B2

公开(公告)日：2021-10-12

申请号：US15116412

申请日：2014-05-19

Applicant: Halliburton Energy Services, Inc.

Inventor： Paul Joseph Ganssle ,  Krishna M. Ravi ,  Songhua Chen ,  Peter James Boul

IPC: E21B47/005 ,  E21B47/135 ,  E21B33/14 ,  G01N24/08 ,  G01R33/38 ,  G01N33/38

Abstract: Various embodiments include nuclear magnetic resonance (MR) sensor array systems and methods are disclosed. One such system includes a downhole casing having at least one MR sensor array peripherally coupled to an outside of the casing. At least one MR sensor array can include an MR sensor configured to monitor a cement/fluid mix composition while the cement is setting.

公开(公告)号：US11130899B2

公开(公告)日：2021-09-28

申请号：US15319013

申请日：2015-06-16

Applicant: Schlumberger Technology Corporation

Inventor： Mickael Allouche ,  Sebastien Catheline ,  Alice Chougnet-Sirapian ,  Nicolas Droger

IPC: C09K8/467 ,  C04B28/04 ,  E21B47/14 ,  E21B33/14 ,  C04B28/14 ,  C04B28/06 ,  C04B28/18 ,  C04B28/02 ,  C04B28/34 ,  C04B28/00 ,  C04B28/32 ,  E21B47/005 ,  E21B47/007 ,  E21B47/107 ,  C04B22/06 ,  C04B103/56

Abstract: Methods for cementing a subterranean well and maintaining zonal isolation involve preparing a cement slurry that contains water, an inorganic cement and an expanding agent. The slurry is placed in the annular region between casing and the formation or between two casing strings. After the cement sets, the expanding agent reacts and causes the set cement to be in a state of compression within the annular region. The casing dimensions may fluctuate in response to a temperature change, a pressure change, a mechanical disturbance resulting from a well intervention, or mud contamination or a combination thereof. The expanding agent may further react and maintain a state of compression within the annular region. The state of compression in the annular region may be monitored by acoustic impedance measurements.