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1. 发明授权

US11898404B2 Drill string components having multiple-thread joints 有权
公开(公告)号：US11898404B2
公开(公告)日：2024-02-13
申请号：US16709552
申请日：2019-12-10
申请人： BLY IP INC.
发明人： Christopher L. Drenth , Keith William Littlely
IPC分类号： E21B17/22 , E21B17/042
CPC分类号： E21B17/22 , E21B17/042
摘要： Drill string components having at least two threads extending around a body. The leading end of each thread can have a configuration having increased strength and resistance to jamming and cross-threading. In particular, the leading end of each thread can comprise a planar surface normal to the body. The leading end of each thread can provide an abrupt transition to full thread depth that helps reduce or eliminate cross-threading and can be oriented at an angle relative to the axis of the drill string component. Each thread can further provide at least one of a variable thread width and a variable thread pitch configured to create an axial progressive fit. Each thread can also provide a cylindrical thread root and a thread crest that circumscribes a frusta-cone over at least a portion of the axial length of the threads configured to create a radial progressive fit.

2. 发明授权

US11703161B2 Internal spiral conduit bearing capacity reinforcing device and method for using the same 有权
公开(公告)号：US11703161B2
公开(公告)日：2023-07-18
申请号：US16514970
申请日：2019-07-17
申请人： China University of Petroleum-Beijing
发明人： Qishuai Yin , Jin Yang , Shanshan Shi , Yang Long , Qianling Xue , Li Li
IPC分类号： F16L11/12 , E21B17/22
CPC分类号： F16L11/121 , E21B17/22
摘要： A bearing capacity reinforcing device. The bearing capacity reinforcing device comprises: a reinforcing mechanism having a reinforcing body and a reinforcing disc connected to a lower portion of the reinforcing body, a plurality of reinforcing rib plates being spaced apart in a circumferential direction of the reinforcing body and connected to the reinforcing disc; wherein the reinforcing disc is provided with a plurality of accommodating spaces which are spaced apart in a circumferential direction thereof and provided therein with a movable sector plate, respectively, and the reinforcing disc at each of the accommodating spaces is provided with a perforated portion which can be blocked by the sector plate; and a connecting portion having a male buckle end connected to a lower end of the reinforcing body, and a female buckle end connected to an upper end of the reinforcing body. The present disclosure can increase the area of action between the riser or the surface conduit and the seabed soil, thereby increasing the bearing capacity of the conduit to ensure the safety and high efficiency of on-site exploration and development operations.

3. 发明授权

US11572740B2 Downhole production casing string 有权
公开(公告)号：US11572740B2
公开(公告)日：2023-02-07
申请号：US15039146
申请日：2014-11-28
申请人： Welltec Oilfield Solutions AG
发明人： Ricardo Reves Vasques , Satish Kumar , Line Bergmann
IPC分类号： E21B7/20 , E21B33/127 , E21B17/08 , E21B17/10 , E21B17/22
摘要： The present invention relates to a downhole production casing string for insertion in a borehole in a reservoir, the downhole production casing string having a first end nearest a top of the borehole and a second end furthest away from the top, the downhole production casing string extending along a longitudinal axis and comprising at least one opening which during production allows hydrocarbon-containing fluid from the reservoir into the downhole production casing string, a plurality of casing parts having end sections and a base section between the end sections, the base section having an outer diameter, and at least one annular projecting element having an outer face and at least one helical groove arranged in or on the outer face and having an overall outer diameter which is larger than the outer diameter of the base section. Furthermore, the invention relates to a downhole production casing string system for completing a well downhole and to a method of implementing a production casing string according to the invention.

4. 发明申请

US20230003089A1 DOWNHOLE TRACTION TOOL AND METHOD OF USE 有权
公开(公告)号：US20230003089A1
公开(公告)日：2023-01-05
申请号：US17783394
申请日：2020-12-09
申请人： INNOVATIVE DRILLING SYSTEMS LIMITED
发明人： Jean BOULET , Siegfried GRABNER
IPC分类号： E21B17/22 , E21B17/10
摘要： The invention provides a downhole borehole traction apparatus (10) and method of use. The apparatus comprises a body comprising a borehole engaging section wherein the borehole engaging section comprises an outer surface comprising at least one thread. The at least one thread comprises a crest surface (32), a leading surface (30), and a trailing surface (28) having a curvilinear shape. The at least one thread has a low pressure generation means comprising one or more formations.

5. 发明授权

US11499396B2 Downhole cleaning tool 有权
公开(公告)号：US11499396B2
公开(公告)日：2022-11-15
申请号：US16647686
申请日：2018-09-14
申请人： INNOVATIVE DRILLING SYSTEMS LIMITED
发明人： Jean Gilbert Boulet , Siegfried Johann Grabner
IPC分类号： E21B17/22 , E21B37/10 , B08B9/032 , E21B17/10
摘要： A downhole borehole cleaning apparatus (10) for recirculating drill cuttings contained in a downhole borehole is provided and has a body (10) having an outer surface for contacting downhole fluid containing said drill cuttings, the downhole fluid comprising a certain pressure within the downhole borehole (16). The body (10) has a pair of bearing surfaces (30U; 30D) spaced apart along the longitudinal axis of the body (10), and the pair of bearing surfaces (30U; 30D) comprise substantially the same maximum outer diameter (d1) which is greater than the maximum outer diameter of the rest (14) of the body (10). Each of the pair of bearing surfaces (30U; 30D) comprises a substantially constant and un-interrupted diameter (d1) around its whole outer circumference for at least a portion of its longitudinal length; this forces all of the drilling fluid to pass around that maximum outer diameter. The outer surface of the body (10) further comprises a low pressure generation means (50) located in between the two longitudinally spaced apart bearing surfaces (30U; 30D) for generating a region of lower pressure in the downhole fluid within that region compared to the said certain pressure. A method of cleaning a downhole borehole is also described involving miming in a work string comprising a downhole borehole cleaning tool (10) into a borehole to be cleaned, and permitting or arranging for relative movement to occur between the downhole borehole cleaning tool (10) and fluid located in the annulus (15) in the borehole (16) whereby drill cuttings are recirculated.

6. 发明授权

US11359486B2 Mud pulser and method for operating thereof 有权
公开(公告)号：US11359486B2
公开(公告)日：2022-06-14
申请号：US16863512
申请日：2020-04-30
申请人： China Petroleum & Chemical Corporation
发明人： Sheng Zhan , Sam Seldon
IPC分类号： E21B47/18 , E21B21/12 , E21B34/16 , E21B17/22 , E21B17/00
摘要： A pulser for generating pressure pulses propagating through a column of drilling fluid in the drill string to the surface during drilling. The pulser may include a screen in the surface of a tubular housing to permit mud from the mud stream to enter into the pulser; an adjustable servo valve configured to receive the mud and including a removable servo poppet and a removable servo orifice member positioned in the tubular housing, wherein the adjustable servo valve is configured to allow the removable servo poppet and the removable servo orifice member to be replaced by another removable servo poppet and another removable servo orifice member to alter an inner diameter of an orifice of the adjustable servo valve to accommodate drilling conditions to increase a performance of the pulser generating pressure pulses for the mud stream returning to the surface.

7. 发明申请

US20210310333A1 EXTENDED SURFACE SYSTEM WITH HELICAL REAMERS 有权
公开(公告)号：US20210310333A1
公开(公告)日：2021-10-07
申请号：US16838874
申请日：2020-04-02
申请人： Saudi Arabian Oil Company
发明人： Ibrahim Abdullah Althowiqeb
IPC分类号： E21B37/00 , E21B17/22 , E21B47/007 , E21B47/024
摘要： A debris removal system includes: a drill pipe disposed within a borehole including a threaded portion disposed longitudinally above a bottom hole assembly (BHA). The threaded portion includes at least one spiral notch that wraps around the drill pipe. An outer diameter of the threaded portion of the drill pipe remains constant throughout a longitudinal length of the threaded portion.

8. 发明授权

US11125033B2 Wellbore cleanout tool 有权
公开(公告)号：US11125033B2
公开(公告)日：2021-09-21
申请号：US16763837
申请日：2018-12-04
申请人： Altus Intervention (Technologies) AS
发明人： Svein Edvardsen
IPC分类号： E21B4/02 , E21B4/04 , E21B21/12 , E21B27/04 , E21B21/08 , E21B17/22 , E21B7/18 , E21B10/18 , E21B29/00
摘要： A downhole tool string forming a free end portion for performing an operation in a well having a well fluid, the string comprising towards the free end portion; a motor for delivering a rotational speed, a pump connected the motor for circulating the well fluid through a first port and a second port, a gear housing comprising a gear being driven by the pump and delivering a reduced rotational speed, a tool shaft rotatable by the gear at the reduced rotational speed; a reservoir around a section of the tool shaft for collecting dislodged material, and a material dislodging means connected to the tool shaft, wherein the gear housing further comprises a first fluid channel for providing fluid communication between the pump and the first port via the tool shaft being hollow, and a second fluid channel for providing fluid communication between the pump and second port via the reservoir.

9. 发明授权

US11085278B2 Top-down fracturing system 有权
$Top-down fracturing system$
公开(公告)号：US11085278B2
公开(公告)日：2021-08-10
申请号：US16408734
申请日：2019-05-10
申请人： ABD TECHNOLOGIES LLC
发明人： Neil H. Akkerman , John A. Barton
IPC分类号： E21B43/12 , E21B43/119 , E21B29/00 , E21B23/00 , E21B23/04 , E21B34/06 , E21B34/10 , E21B17/22 , E21B47/024 , E21B43/14 , B23B1/00 , E21B43/26 , E21B43/116 , E21B33/134 , E21B33/12 , E21B17/20
摘要： A flow transported obturating tool for actuating a valve in a wellbore includes a housing including a first engagement member and a second engagement member, wherein the first and second engagement members each include an unlocked and a locked position, and a core disposed in the housing, wherein the core is configured to actuate both the first engagement member and the second engagement member between the unlocked and locked positions, wherein, when the first engagement member is in the locked position, the first engagement member is configured to locate the obturating tool at a predetermined axial position in the valve, wherein, when the second engagement member is in the locked position, the second engagement member is configured to shift the valve from an open position to a closed position.

10. 发明授权

US10961791B2 Method and apparatus to rotate subsurface wellbore casing 有权
公开(公告)号：US10961791B2
公开(公告)日：2021-03-30
申请号：US16410043
申请日：2019-05-13
申请人： COLORADO SCHOOL OF MINES
发明人： William W. Fleckenstein , Alfred W. Eustes, III
IPC分类号： E21B33/14 , E21B17/22
摘要： Embodiments of the present invention are generally related to a method and apparatus for subterranean wellbores and in particular, to a method and apparatus for rotating a subsurface tubular string, such as a casing section, without rotation at the surface. More specifically, a casing section of a wellbore may be rotated to provide a cement seal with increased strength and reliability. In one embodiment, a downhole tool and rotation assembly is disclosed which imparts a torsional force to a predetermined casing section when a fluid is flowed through the downhole tool and rotation assembly.

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