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Title:
ROTATING TORQUE RUNNING TOOL WITH INTERCHANGEABLE LANDING SUB
Document Type and Number:
WIPO Patent Application WO/2020/264414
Kind Code:
A1
Abstract:
A running tool for installing a casing hanger down a wellbore incorporates an interchangeable landing sub component that engages the tubular body component with a standard threaded coupling that can be disengaged without the use of a tool, the interchangeable landing sub component has internal threads configured for engaging a variety of different external threads of different casing hangers.

Inventors:
DOUGLAS JOSH (US)
NAVA MOISES (US)
LAM DENNIS DAI (US)
Application Number:
PCT/US2020/039975
Publication Date:
December 30, 2020
Filing Date:
June 26, 2020
Export Citation:
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Assignee:
SEABOARD INT INC (US)
International Classes:
E21B33/043; E21B7/20; E21B33/04; E21B43/10
Domestic Patent References:
WO2018107095A22018-06-14
Foreign References:
US20120305269A12012-12-06
US20180258727A12018-09-13
US4674576A1987-06-23
US5069288A1991-12-03
Attorney, Agent or Firm:
JEANG, Wei Wei (US)
Download PDF:
Claims:
WHAT IS CLAIMED IS:

1. A running tool for installing a casing hanger down a wellbore, the running tool comprising:

a first tubular component; and

a plurality of interchangeable second tubular components each designed to couple to the first tubular component with a standard threaded coupling, the plurality of second tubular components each having internal threads configured for engaging a variety of different external threads of different casing hangers.

2. The running tool of claim 1 , wherein the first tubular component and the plurality of interchangeable second tubular components are engageable via an ACME threaded connection.

3. The running tool of claim 1, wherein the first tubular component and the plurality of interchangeable second tubular components are engageable via a standard threaded coupling that can be disengaged without the use of a tool.

4. The running tool of claim 1, further comprising a third tubular component being engageably coupled with the first tubular component so that the first, second, and third tubular components being concentrically coupled.

5. The running tool of claim 1 , further comprising at least one seal disposed at an interface between the first tubular component and at least one of the plurality of second tubular component engaged therewith.

6. A running tool for installing a casing hanger down a wellbore, the running tool comprising:

a tubular sleeve component having a longitudinal axis;

a tubular body component having a longitudinal axis and being coupled to the sleeve component so that the longitudinal axes are in alignment; and

at least one interchangeable landing sub component having a longitudinal axis and configured to couple to the tubular body component with a coupling that can be disengaged without the use of a tool, the at least one interchangeable landing sub having internal threads configured for engaging a variety of different external threads of different casing hangers.

7. The running tool of claim 6, wherein the tubular body component and the at least one interchangeable landing sub component are engageable via an ACME threaded connection.

8. The running tool of claim 6, wherein the tubular body component and the at least one interchangeable landing sub component are engageable via a standard threaded coupling that can be disengaged without the use of a tool.

9. The running tool of claim 6, wherein the at least one interchangeable landing sub component includes a standard threaded interface with the tubular body component so that the longitudinal axes thereof are in alignment.

10. The running tool of claim 6, further comprising at least one O-ring disposed at an interface between the body component and the at least one interchangeable sub component engaged therewith.

11. A running tool for installing a casing hanger down a wellbore, the running tool comprising:

a tubular sleeve component defining a cylindrical interior space with a longitudinal axis; a tubular body component having a longitudinal axis and being insertable within the cylindrical interior space of the tubular sleeve component and engageable therewith so that the longitudinal axes are in alignment; and

at least one interchangeable landing sub component having a longitudinal axis and configured to be insertable within a cylindrical interior space of the tubular body component and engageable with a standard coupling that can be disengaged without the use of a tool, the at least one interchangeable landing sub component having internal threads configured for engaging a variety of different external threads of different casing hangers.

Description:
ROTATING TORQUE RUNNING TOOL

WITH INTERCHANGEABLE LANDING SUB

FIELD

The present disclosure relates to oil and gas wellhead equipment, and in particular, the present disclosure is to a rotating torque running tool with an interchangeable landing sub.

BACKGROUND

The casing hanger is part of a wellhead assembly that provides the means to support and seal a casing string (intermediate and production) when it is lowered into the wellbore. The casing hanger serves to ensure that the casing is properly located. When the casing string has been run into the wellbore it is hung off, or suspended, by a casing hanger, which rests on a landing shoulder inside the casing spool. Casing hangers must be designed to take the full weight of the casing, and provide a seal between the casing hanger and the spool. After a well bore has been drilled and lined with casing, the usual practice is to cement the casing in place to protect ground water and the integrity and stability of the well. Conventional cementing techniques involve displacing cement slurry down through the bore of the casing and out a shoe on the bottom thereof so that the cement fills the annulus between the casing and the well bore wall.

BRIEF DESCRIPTION OF THE DRAWINGS

FIGS. 1A and IB are end and longitudinal cross-sectional views of an exemplary embodiment of a rotating torque running tool with interchangeable landing sub in a locked position according to the teachings of the present disclosure;

FIGS. 2A and 2B are end and longitudinal cross-sectional views of an exemplary embodiment of a rotating torque running tool with interchangeable landing sub in an unlocked position according to the teachings of the present disclosure;

FIG. 3 is another longitudinal cross-sectional view of an exemplary embodiment of a rotating torque running tool with interchangeable landing sub according to the teachings of the present disclosure; and

FIG. 4 is a longitudinal cross-sectional view an exemplary embodiment of a rotating torque running tool with interchangeable landing sub engaged with a casing hanger according to the teachings of the present disclosure. DETAILED DESCRIPTION

To drill a well to surface, intermediate, or production depth, a casing hanger (e.g., mandrel type) is installed on the well casing support shoulder or casing head. The casing hanger is used to support surface, intermediate, or production well casing (also referred to herein as a liner) that is inserted and dropped into the well. A running tool is typically used to apply torque and install the casing hanger in the wellbore. A rotating torque tool supports, for example, extended horizontal wellbore drilling and enables case rotation and low torque release. During installation of casing into extended horizontal sections, there are times when the casing string assembly needs to be rotated to permit it to be installed at the desired depth. The use of a rotating torque tool allows for this rotation, reducing downtime associated with stuck pipe.

The conventional rotating torque tool includes threading on its inner circumferential surface to engage the casing hanger. However, this threaded interface is not standardized due to the number of equipment manufacturers and the type of casing and casing hangers used in the field. Because there may be more than one hundred thread type/size combinations currently in the field, the installation of each casing hanger will require the use of a rotating torque tool that has the correct corresponding thread interface.

Referring to FIG. 1A, the rotating torque running tool 10 described herein includes three primary components: a tubular sleeve 12, a tubular body 14, and an interchangeable landing sub 16. FIG. IB shows the running tool 10 in a locked position, and FIG. 2B shows the running tool 10 in an unlocked position. In the locked position, the body 14 is fully inserted into and engaged with the sleeve 12. The tubular landing sub 16 is coupled to the tool body 14 by a threaded connection 18, such as ACME threads and other suitable threads. One or more seals 20 and 21, e.g., O-rings and the like, may be employed at the sub-and-body interface proximate the threaded interface 18. No special tool is needed to decouple the interchangeable sub 16 from the tool body 14. The sub 16 can be rotated to release the threaded connection with the tool body 14. The landing sub 16 also has an inner thread 22 that is used to engage and couple the running tool 10 to the casing hanger 30 (see FIG. 4) from which the casing 32 (FIG. 4) is supported. This threaded interface 22 of the interchangeable landing sub 16 can be customized to interface with the specific thread profile and weight of the casing hanger 30. Because the landing sub 16 can be quickly and easily switched out without special process or tool, the running tool 10 can be easily adapted to install casing hangers with a variety of different thread profiles.

The running tool 10 may be constructed of sufficiently high strength steel to support the weight of the liner as it is run into the well. The rotating torque tool 10 is designed to allow for the rotation of the casing string assembly, reducing issues of stuck pipe. The design also allows for full bore access of the casing string during all stages of casing installation and cementing operations. The tool 10 can be disengaged from the casing hanger manually once it has been landed. The tool 10 is also designed with diameter dimensions to allow for sufficient annular flow for cementing operations.

The rotating torque tool 10 described herein can be deployed for horizontal and vertical wells, as well as for surface and subsea applications. An exemplary process for installing a mandrel type casing hanger includes the step of: 1) visually inspect the Mandrel Hanger sealing neck and running thread for any damage; 2) lubricate the running threads with an approved lubricant; 3) visually verify that the teeth are in good condition; 4) pick up the rotating torque tool and lower it onto the mandrel hanger and rotate clockwise 9-10 turns for positive stop. After positive stop rotate counterclockwise until the sleeve is aligned with the casing hanger flute slots. Remove the two socket head cap screw on the sleeve and slowly lower the sleeve down inside the casing hanger flute slots; 5) make-up the casing hanger and the rotating torque tool onto the last joint of the casing string; 6) lower the casing hanger until it lands on the load shoulder of the casing head 12.52” from the top flange of the casing head. Take a measurement while installing the casing hanger to verify it is properly landed; 7) after landing the casing hanger and prior to cementing, rotate counterclockwise; 8) circulate cement, taking returns over shaker; and 9) pick up neutral weight then remove the rotating torque tool from the casing hanger by rotate counterclockwise 9-10 turns. Pick up the tool vertically approximately 1/8 turns to disengage sleeve from the flutes

The features of the present invention which are believed to be novel are set forth below with particularity in the appended claims. However, modifications, variations, and changes to the exemplary embodiments described above will be apparent to those skilled in the art, and the rotating torque tool with interchangeable landing subs described herein thus encompasses such modifications, variations, and changes and are not limited to the specific embodiments described herein.