JP-7855684-B2 - Methane hydrate production equipment and methods

JP7855684B2JP 7855684 B2JP7855684 B2JP 7855684B2JP-7855684-B2

Inventors

アンダーソン，デイビッド，エー．
ロバートソン，フィオナ
クラーク，ポール
ラジャン，ロビン

Assignees

ベーカーヒューズエナジーテクノロジーユナイテッド・キングダムリミテッド

Dates

Publication Date: 20260508
Application Date: 20221026
Priority Date: 20211027

Claims (20)

It is a system for underwater work, A well adapter associated with a production well or monitoring well, comprising: receiving a cap for capping the production well or monitoring well; and receiving a valve package for enabling the flow of production fluid from the production well to the valve package; The valve package is positioned between the cap and the opposite surface of the well adapter to the cap, when viewed from a direction perpendicular to the sea surface . The well adapter is configured to directly receive both the cap and the valve package. system.
The system according to claim 1, further comprising one or more of the Xmas tree, lower riser package (LRP), and emergency cut package (EDP) for forming the valve package.
The system according to claim 1, further comprising an access port in the well adapter for enabling communication equipment, a downhole pressure transducer (DHPT), or monitoring equipment to access the production well or monitoring well.
The system according to claim 1, further comprising a passage mechanism for the well adapter that enables water to flow independently of the gas from the methane hydrate layer of the production well or monitoring well.
The system according to claim 1, further comprising an alignment frame that forms part of the well adapter and includes a control unit for operation by a remotely operated vehicle (ROV).
A wellhead coupler, which is part of the wellhead adapter and sits on the wellhead housing of the production well or monitoring well, The system according to claim 1, further comprising: a dog in the mine port coupler that locks into a groove in the outer diameter of the mine port housing.
The system according to claim 1, further comprising tubing associated with the well adapter, which is located within the casing hanger of the production well or monitoring well.
The system according to claim 1, further comprising a tubing hanger associated with the wellhead housing of the production well or monitoring well, the tubing hanger receiving the well adapter which is stub-connected using an open water intervention riser system (OWIRS).
The system according to claim 1, further comprising a tubing hanger associated with the well adapter and tubing, wherein the tubing is located within the casing hanger of the production well or monitoring well.
A well adapter associated with a production well or monitoring well, which receives a cap for capping the production well or monitoring well, and receives a valve package for enabling the flow of production fluid from the production well to the valve package, The valve package is positioned between the cap and the opposite surface of the well adapter to the cap, when viewed from a direction perpendicular to the sea surface . The well adapter is configured to directly receive both the cap and the valve package. Well adapter.
An access port in the well adapter to enable communication equipment, a downhole pressure transducer (DHPT), or monitoring equipment to access the production well or monitoring well, The well adapter according to claim 10, further comprising one or more of the following: a passage mechanism for the well adapter that enables water to flow independently of the gas from the methane hydrate layer of the production well or monitoring well; or an alignment frame that forms part of the well adapter and includes a control unit for operation by a remotely operated vehicle (ROV).
A method for underwater work, To enable the well adapter to be associated with a production well or a monitoring well, A method comprising associating a cap or valve package with the well adapter, wherein the cap enables capping of the production well or monitoring well, and the valve package enables the flow of production fluid from the production well to the valve package, The valve package is positioned between the cap and the opposite surface of the well adapter to the cap, when viewed from a direction perpendicular to the sea surface . A method wherein the well adapter is configured to directly receive both the cap and the valve package .
The method according to claim 12, further comprising enabling the valve package using one or more of the Xmas tree, lower riser package (LRP), and emergency cut package (EDP).
The method according to claim 12, further comprising enabling an access port in the well adapter to allow communication equipment, a downhole pressure transducer (DHPT), or monitoring equipment to access the production well or monitoring well.
The method according to claim 12, further comprising providing a passage mechanism for the well adapter that allows water to flow independently of the gas from the methane hydrate layer of the production well or monitoring well.
The method according to claim 12, further comprising providing the well adapter with an alignment frame including a control unit for operation by a remotely operated vehicle (ROV).
To enable the wellhead coupler, which becomes part of the wellhead adapter and sits on the wellhead housing of the production well or monitoring well, The method according to claim 12, further comprising providing a dog in the mine port coupler that locks against a groove in the outer diameter of the mine port housing.
The method according to claim 12, further comprising associating tubing with the well adapter, wherein the tubing is located within the casing hanger of the production well or monitoring well.
The method according to claim 12, further comprising associating a tubing hanger with the wellhead housing of the production well or monitoring well, wherein the tubing hanger receives the well adapter, which is stub-connected using an Open Water Intervention Riser System (OWIRS).
The method according to claim 12, further comprising associating a tubing hanger with the well adapter and the tubing, wherein the tubing is located within the casing hanger of the production well or monitoring well.

Description

(Cross-reference of related applications) This application relates to Indian Patent Nonprovisional Application No. 202111049160, entitled "METHANE HYDRATE PRODUCTION EQUIPMENT AND METHOD," filed on 27 October 2021, and claims the benefit of priority from that application, the entire disclosure of which is incorporated herein by reference for all intent and purposes. (Field of invention) This disclosure relates to systems and methods for performing methane hydrate operations. More specifically, this disclosure relates to tool assemblies used for methane hydrate production equipment and methods in a marine environment. Various embodiments of this disclosure will be described with reference to the drawings. Figure 1 is a schematic diagram of a system for performing methane hydrate work that is subject to improvement, according to an embodiment of the present disclosure. Figure 2 shows a system for subsea operations, comprising a well adapter and valve package having a well control package (WCP), according to at least one embodiment. Figure 3 shows details of a well adapter for subsea operations according to at least one embodiment. Figure 4 provides further details in various diagrams of a system for subsea operations, including a well adapter, according to at least one embodiment. Figure 5 shows the details of the association of a system for subsea operations, including a well adapter, according to at least one embodiment. Figure 6 shows various installation sequences for a system for subsea operations, including a well adapter, according to at least one embodiment. Figure 7 shows various installation sequences for a system for subsea operations, including a well adapter, according to at least one embodiment. Figure 8 shows various installation sequences for a system for subsea operations, including a well adapter, according to at least one embodiment. Figure 9 is a flowchart illustrating a method relating to a system for subsea operations, including a well adapter, according to at least one embodiment. The following description illustrates various embodiments. For illustrative purposes, specific configurations and details are described to provide a complete understanding of the embodiments. However, it will be apparent to those skilled in the art that embodiments may be carried out without these specific details. Furthermore, well-known features may be omitted or simplified in order not to obscure the embodiments described. Various other functions may be implemented in various embodiments and may be described and suggested elsewhere in this specification. In at least one embodiment, this disclosure relates to systems and methods relating to systems for subsea operations, including well adapters. In at least one embodiment, a system for subsea work including a well adapter may be associated with a method for installing the system. This system and method relate to the extraction of methane gas from a methane hydrate source. Multiple methods for installing the system may exist, and these multiple methods may include specific installation sequences for reaching the system for subsea work including the well adapter. Once installed, the system for subsea work including the well adapter is associated with a well or wellhead, which is either a production well or a monitoring well. A production well is a well that produces methane gas from a methane hydrate source. Methane hydrate sources generally include seafloor regions containing methane gas surrounded by ice. Methane gas is a useful fuel that is colorless, odorless, and flammable. In at least one embodiment, such methane gas can be produced by the bacterial decomposition of plant and animal matter and can be formed in processes shared by all fossil fuels. The hydrate aspect of a methane hydrate source may relate to a water-containing substance. For example, methane does not chemically bond with water. Instead, each tetrahedral methane molecule may reside within a crystalline shell made of ice. Thus, this substance is called methane hydrate, and its seafloor source can be a methane hydrate source. In at least one embodiment, the installation sequence includes running tubing in open water. The well adapter may be installed with its associated tubing, or without tubing if a stub connection is provided to a tubing hanger, or with its associated tubing hanger. In at least one embodiment, such a system for subsea work, including the well adapter, addresses the issue where a subsea test tree (SSTT) or simplified landing string (SLS) equipment may be required separately. Therefore, the system for subsea work, including the well adapter, eliminates the requirement for using a subsea test tree and BOP, replacing such requirements with an open water finishing system, and consequently allowing the open water finishing system to be used in other projects. In at least one embodiment, the installation sequence provides a seal at the wellhead with a tubing hanger associated wit