WO2015191961A2 - High pressure gas storage - Google Patents

High pressure gas storage Download PDF

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Publication number
WO2015191961A2
WO2015191961A2 PCT/US2015/035491 US2015035491W WO2015191961A2 WO 2015191961 A2 WO2015191961 A2 WO 2015191961A2 US 2015035491 W US2015035491 W US 2015035491W WO 2015191961 A2 WO2015191961 A2 WO 2015191961A2
Authority
WO
WIPO (PCT)
Prior art keywords
brine
hydrogen
valve
passage
wellhead
Prior art date
Application number
PCT/US2015/035491
Other languages
French (fr)
Other versions
WO2015191961A3 (en
Inventor
Ronald STRYBOS
Original Assignee
L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude filed Critical L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude
Publication of WO2015191961A2 publication Critical patent/WO2015191961A2/en
Publication of WO2015191961A3 publication Critical patent/WO2015191961A3/en

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B41/00—Equipment or details not covered by groups E21B15/00 - E21B40/00
    • E21B41/005—Waste disposal systems
    • E21B41/0057—Disposal of a fluid by injection into a subterranean formation
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B33/00—Sealing or packing boreholes or wells
    • E21B33/02—Surface sealing or packing
    • E21B33/03—Well heads; Setting-up thereof
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B34/00—Valve arrangements for boreholes or wells
    • E21B34/02—Valve arrangements for boreholes or wells in well heads

Definitions

  • a storage wellhead allowing on-line system maintenance and testing is provided. Including at least two fluidically parallel gas passages adapted to allow testing or maintenance of one gas passage, while the other gas passage remains in service.
  • the gas may be hydrogen. Also including at least two fluidically parallel liquid passages adapted to allow testing or maintenance of one liquid passage, while the other liquid passage remains in service.
  • the liquid may be brine.
  • FIG. 1 illustrates one embodiment of the present invention.
  • FIG. 2 illustrates another embodiment of the present invention. Description of Preferred Embodiments
  • high pressure is defined as a gas storage pressure at or above 2401 psig.
  • This invention claims the design of the storage wellhead for high pressure gas to include two outlets on both the gas and the liquid wellhead spools to facilitate testing and maintenance of valves so as to not interrupt gas or liquid flow.
  • all flanges and valves meet API 5000 (API 5M) and for gas storage pressures of 4001 psig to 8000 psig, all flanges and valves meet API 10000 (API 10M).
  • the wellhead design includes hydraulically operated valves of the required pressure rating for use as emergency shutdown devices (ESDs) on the high pressure gas and brine systems.
  • the piping size of the hydraulically operated valves can be from 2 inch up to 9 inch.
  • All automated valves in this invention are designed to fail closed on loss of signal, loss of hydraulic pressure, and on loss of instrument gas.
  • the liquid master valve, high pressure gas wing valves, brine wing valves, and brine logging valve design includes the use of manual valves of the required pressure rating.
  • the piping size of the manually operated valves can be from 2 inch up to 9 inch.
  • each wellhead spool has a flange connection for pressure indication.
  • a storage wellhead allowing on-line system maintenance and testing is described.
  • a gas wellhead spool (1 17) Within a gas wellhead spool (1 17) is a gas passage (102) and a liquid passage (101 ). As the gas passage (102) penetrates the gas wellhead spool (1 17), it splits into at least two fluidically parallel gas passages (103,104).
  • the gas wellhead spool (1 17) is adapted to allow testing or maintenance of one gas passage (103,104), while the other gas passage remains in service.
  • the storage wellhead may be designed such that each gas passage (103, 104) is capable of conveying the entire design gas flowrate.
  • the gas may be hydrogen.
  • Each gas passage may comprise an automatic gas valve (107,108).
  • Each gas passage (103, 104) may comprise a gas wing valve (105, 106). After passing through the gas passage (103, 104), the gas wing valve (105, 106), and the automatic gas valve (107, 108), the gas exits the storage wellhead through conduit (109), to be utilized downstream.
  • FIG. 1 illustrates the situation where one automatic gas valve (107) is closed, as would be the case during testing, while simultaneously the other automatic gas valve (108) is open and allowing gas to pass.
  • each liquid passage (1 10, 1 1 1 ) is capable of conveying the entire design liquid flowrate.
  • the liquid may be brine.
  • Each liquid passage may comprise an automatic liquid valve (1 14,1 15).
  • Each liquid passage (1 10, 1 1 1 ) may comprise a liquid wing valve (1 12, 1 13). After passing through the liquid passage (1 10, 1 1 1 ), the liquid wing valve (1 12, 1 13), and the automatic liquid valve (1 14, 1 15), the liquid exits the storage wellhead through conduit (1 16), to be utilized downstream.
  • the gas passage (103, 104), or automatic gas valve (107,108), testing may occur at predefined first intervals.
  • the predefined first interval may be once a month.
  • the liquid passage (1 10,1 1 1 ), or automatic liquid valve (1 14,1 15), testing may occur at predefined second intervals.
  • the predefined second interval may be once a month.
  • the gas wellhead spool may operate at a pressure of greater than 2400 psig.
  • the gas wellhead spool may operate at a pressure of less than 4000 psig.
  • the gas wellhead spool may operate at a pressure of less than 3000 psig.
  • All automatic gas valves (107,108) and all automatic liquid valves (1 14,1 15) may be tested at a predefined third interval.
  • the predefined third interval may be every six months.
  • the automated valves may be hydraulically operated.
  • the test may comprise measuring the time for each valve to move from a fully open position to a fully closed position.
  • the liquid wellhead spool may operate at a pressure of greater than 2400 psig.
  • the liquid wellhead spool may operate at a pressure of less than 4000 psig.
  • the liquid wellhead spool may operate at a pressure of less than 3000 psig.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)

Abstract

A storage wellhead allowing on-line system maintenance and testing is provided. Including at least two fluidically parallel gas passages adapted to allow testing or maintenance of one gas passage, while the other gas passage remains in service. The gas may be hydrogen. Also including at least two fluidically parallel liquid passages adapted to allow testing or maintenance of one liquid passage, while the other liquid passage remains in service. The liquid may be brine.

Description

HIGH PRESSURE GAS STORAGE
Cross Reference to Related Applications
This application claims priority to US Patent Application No. 14/303,310 filed June 12, 2014 and U.S. Patent Application No. 14/468,714 filed August 26, 2014, the entire contents of which are incorporated herein by reference.
Background
The storage of gases in very deep caverns, whether leached in salt formations or created by hard rock mining, or other gas storage at high pressure conditions require equipment rated for that pressure. Regulatory statues require periodic function testing of emergency control valves and safety equipment.
Commercial demand requires continuous flow of gas from the storage cavern, thus creating the need for multiple flow paths from the storage cavern.
Summary
A storage wellhead allowing on-line system maintenance and testing is provided. Including at least two fluidically parallel gas passages adapted to allow testing or maintenance of one gas passage, while the other gas passage remains in service.
The gas may be hydrogen. Also including at least two fluidically parallel liquid passages adapted to allow testing or maintenance of one liquid passage, while the other liquid passage remains in service. The liquid may be brine.
Brief Description of the Figures
For a further understanding of the nature and objects for the present invention, reference should be made to the following detailed description, taken in conjunction with the accompanying drawings, in which like elements are given the same or analogous reference numbers and wherein:
Figure 1 illustrates one embodiment of the present invention.
Figure 2 illustrates another embodiment of the present invention. Description of Preferred Embodiments
Illustrative embodiments of the invention are described below. While the invention is susceptible to various modifications and alternative forms, specific embodiments thereof have been shown by way of example in the drawings and are herein described in detail. It should be understood, however, that the description herein of specific embodiments is not intended to limit the invention to the particular forms disclosed, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims.
It will of course be appreciated that in the development of any such actual embodiment, numerous implementation-specific decisions must be made to achieve the developer's specific goals, such as compliance with system-related and business-related constraints, which will vary from one implementation to another. Moreover, it will be appreciated that such a development effort might be complex and time-consuming, but would nevertheless be a routine undertaking for those of ordinary skill in the art having the benefit of this disclosure.
For the purpose of this invention, the definition of high pressure is defined as a gas storage pressure at or above 2401 psig.
This invention claims the design of the storage wellhead for high pressure gas to include two outlets on both the gas and the liquid wellhead spools to facilitate testing and maintenance of valves so as to not interrupt gas or liquid flow. For gas storage pressures of 2401 psig to 4000 psig, all flanges and valves meet API 5000 (API 5M) and for gas storage pressures of 4001 psig to 8000 psig, all flanges and valves meet API 10000 (API 10M).
This invention further claims that the wellhead design includes hydraulically operated valves of the required pressure rating for use as emergency shutdown devices (ESDs) on the high pressure gas and brine systems. The piping size of the hydraulically operated valves can be from 2 inch up to 9 inch. The protection of brine and water systems which operate at lower pressure require an additional automatic valve in the line to create a double block on the brine out of the storage well. All automated valves in this invention are designed to fail closed on loss of signal, loss of hydraulic pressure, and on loss of instrument gas. This invention further claims that the liquid master valve, high pressure gas wing valves, brine wing valves, and brine logging valve design includes the use of manual valves of the required pressure rating. The piping size of the manually operated valves can be from 2 inch up to 9 inch.
This invention further claims that each wellhead spool has a flange connection for pressure indication.
Turning to Figures 1 and 2, a storage wellhead allowing on-line system maintenance and testing is described. Within a gas wellhead spool (1 17) is a gas passage (102) and a liquid passage (101 ). As the gas passage (102) penetrates the gas wellhead spool (1 17), it splits into at least two fluidically parallel gas passages (103,104). The gas wellhead spool (1 17) is adapted to allow testing or maintenance of one gas passage (103,104), while the other gas passage remains in service.
The storage wellhead may be designed such that each gas passage (103, 104) is capable of conveying the entire design gas flowrate. The gas may be hydrogen. Each gas passage may comprise an automatic gas valve (107,108). Each gas passage (103, 104) may comprise a gas wing valve (105, 106). After passing through the gas passage (103, 104), the gas wing valve (105, 106), and the automatic gas valve (107, 108), the gas exits the storage wellhead through conduit (109), to be utilized downstream.
As illustrated in Figure 1 , during normal operation, which is to say under non-testing conditions, all gas passages (103, 104), automatic gas valve (107, 108), and gas wing valves (105, 106) may remain in service. Figure 2 illustrates the situation where one automatic gas valve (107) is closed, as would be the case during testing, while simultaneously the other automatic gas valve (108) is open and allowing gas to pass.
As the liquid passage (101 ) penetrates the gas wellhead spool (1 17), it splits into at least two fluidically parallel liquid passages (1 10,1 1 1 ), wherein the liquid wellhead spool (1 18) is adapted to allow testing or maintenance of one liquid passage (1 10, 1 1 1 ), while the other liquid passage remains in service. The storage wellhead may be designed such that each liquid passage (1 10, 1 1 1 ) is capable of conveying the entire design liquid flowrate. The liquid may be brine. Each liquid passage may comprise an automatic liquid valve (1 14,1 15). Each liquid passage (1 10, 1 1 1 ) may comprise a liquid wing valve (1 12, 1 13). After passing through the liquid passage (1 10, 1 1 1 ), the liquid wing valve (1 12, 1 13), and the automatic liquid valve (1 14, 1 15), the liquid exits the storage wellhead through conduit (1 16), to be utilized downstream.
As illustrated in Figure 1 , during normal operation, which is to say under non-testing conditions, all liquid passages (1 10, 1 1 1 ), automatic liquid valve (1 14, 1 15), and liquid wing valves (1 12, 1 13) may remain in service. Figure 2 illustrates the situation where one automatic liquid valve (1 15) is closed, as would be the case during testing, while simultaneously the other automatic gas valve (1 14) is open and allowing gas to pass.
The gas passage (103, 104), or automatic gas valve (107,108), testing may occur at predefined first intervals. The predefined first interval may be once a month. The liquid passage (1 10,1 1 1 ), or automatic liquid valve (1 14,1 15), testing may occur at predefined second intervals. The predefined second interval may be once a month.
The gas wellhead spool may operate at a pressure of greater than 2400 psig. The gas wellhead spool may operate at a pressure of less than 4000 psig. The gas wellhead spool may operate at a pressure of less than 3000 psig.
All automatic gas valves (107,108) and all automatic liquid valves (1 14,1 15) may be tested at a predefined third interval. The predefined third interval may be every six months. The automated valves may be hydraulically operated.
The test may comprise measuring the time for each valve to move from a fully open position to a fully closed position.
The liquid wellhead spool may operate at a pressure of greater than 2400 psig. The liquid wellhead spool may operate at a pressure of less than 4000 psig. The liquid wellhead spool may operate at a pressure of less than 3000 psig.
It will be understood that many additional changes in the details, materials, steps and arrangement of parts, which have been herein described in order to explain the nature of the invention, may be made by those skilled in the art within the principle and scope of the invention as expressed in the appended claims. Thus, the present invention is not intended to be limited to the specific
embodiments in the examples given above.

Claims

What is claimed is:
1 . A method of on-line system maintenance and testing of a storage wellhead, comprising
· providing hydrogen wellhead spool with at least two fluidically parallel and interchangeable hydrogen passages, each fluidically parallel and interchangeable hydrogen passage comprising at least one automatic hydrogen valve configured to fail close, wherein the hydrogen wellhead spool is adapted to allow testing or maintenance of the at least one automatic hydrogen valve in one hydrogen passage, while allowing the other hydrogen passage remains in service, and
• providing a brine wellhead spool with at least two fluidically parallel and interchangeable brine passages, each fluidically parallel and interchangeable brine passage comprising at least one automatic brine valve configured to fail close, wherein the brine wellhead spool is adapted to allow testing or maintenance of the at least one automatic brine valve in one brine passage, while allowing the other brine passage remains in service.
2. The method of claim 1 , wherein each hydrogen passage further comprises a hydrogen wing valve.
3. The method of claim 1 , wherein each brine passage further comprises a brine wing valve.
4. The method of claim 1 , wherein under non-testing conditions all automated hydrogen valves remain open.
5. The method of claim 1 , wherein under non-testing conditions all automated brine valves remain open.
6. The method of claim 1 , wherein the automated hydrogen valve testing occurs at predefined first intervals.
7. The method of claim 6, wherein the predefined first interval is once a month.
8. The method of claim 1 , wherein the automated brine valve testing occurs at predefined second intervals.
9. The method of claim 8, wherein the predefined second interval is once a month.
10. The method of claim 1 , wherein all automated hydrogen valves and all automated brine valves are tested at a predefined third interval.
1 1 . The method of claim 10, wherein the third interval is every six months.
12. The method of claim 1 1 , wherein the test comprises measuring the time for each valve to move from a fully open position to a fully closed position.
13. The method of claim 1 wherein the automated valves are hydraulically operated.
14. The method of claim 1 , wherein the hydrogen wellhead spool operates at a pressure of greater than 2400 psig.
15. The method of claim 14, wherein the hydrogen wellhead spool operates at a pressure of less than 4000 psig.
16. The method of claim 15, wherein the hydrogen wellhead spool operates at a pressure of less than 3000 psig.
17. The method of claim 1 , wherein the brine wellhead spool operates at a pressure of greater than 2400 psig.
18. The method of claim 17, wherein the brine wellhead spool operates at a pressure of less than 4000 psig.
19. The method of claim 18, wherein the brine wellhead spool operates at a pressure of less than 3000 psig.
PCT/US2015/035491 2014-06-12 2015-06-12 High pressure gas storage WO2015191961A2 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US201414303310A 2014-06-12 2014-06-12
US14/303,310 2014-06-12
US14/468,714 US20150361749A1 (en) 2014-06-12 2014-08-26 High pressure gas storage
US14/468,714 2014-08-26

Publications (2)

Publication Number Publication Date
WO2015191961A2 true WO2015191961A2 (en) 2015-12-17
WO2015191961A3 WO2015191961A3 (en) 2016-03-24

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2015/035491 WO2015191961A2 (en) 2014-06-12 2015-06-12 High pressure gas storage

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US (1) US20150361749A1 (en)
WO (1) WO2015191961A2 (en)

Family Cites Families (10)

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Publication number Priority date Publication date Assignee Title
US4616669A (en) * 1985-04-08 1986-10-14 Phillips Petroleum Company Mixing fluids
US5394943A (en) * 1993-11-05 1995-03-07 Harrington; Donald R. Subsurface shutdown safety valve and arrangement system
US7152675B2 (en) * 2003-11-26 2006-12-26 The Curators Of The University Of Missouri Subterranean hydrogen storage process
US7331396B2 (en) * 2004-03-16 2008-02-19 Dril-Quip, Inc. Subsea production systems
US7905251B2 (en) * 2006-12-29 2011-03-15 Saudi Arabian Oil Company Method for wellhead high integrity protection system
US8171996B2 (en) * 2009-04-29 2012-05-08 Vetco Gray Inc. Wellhead system having a tubular hanger securable to wellhead and method of operation
US8746345B2 (en) * 2010-12-09 2014-06-10 Cameron International Corporation BOP stack with a universal intervention interface
US8814133B2 (en) * 2011-06-23 2014-08-26 General Equipment And Manufacturing Company, Inc. Automatic speed searching device and method for a partial stroke test of a control valve
US8690476B2 (en) * 2012-05-25 2014-04-08 Praxair Technology, Inc. Method and system for storing hydrogen in a salt cavern with a permeation barrier
US20150136406A1 (en) * 2013-11-18 2015-05-21 Chevron U.S.A. Inc. Subsea Intervention Plug Pulling Device

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None

Also Published As

Publication number Publication date
US20150361749A1 (en) 2015-12-17
WO2015191961A3 (en) 2016-03-24

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