WO2015168429A2 - Procédés de refroidissement d'ensemble palier - Google Patents

Procédés de refroidissement d'ensemble palier Download PDF

Info

Publication number
WO2015168429A2
WO2015168429A2 PCT/US2015/028555 US2015028555W WO2015168429A2 WO 2015168429 A2 WO2015168429 A2 WO 2015168429A2 US 2015028555 W US2015028555 W US 2015028555W WO 2015168429 A2 WO2015168429 A2 WO 2015168429A2
Authority
WO
WIPO (PCT)
Prior art keywords
heat exchanger
bearing assembly
inner member
carrier
rcd
Prior art date
Application number
PCT/US2015/028555
Other languages
English (en)
Other versions
WO2015168429A3 (fr
Inventor
James W. Chambers
Original Assignee
Weatherford Technology Holdings, Llc
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 Weatherford Technology Holdings, Llc filed Critical Weatherford Technology Holdings, Llc
Priority to AU2015253003A priority Critical patent/AU2015253003B2/en
Priority to MX2016013237A priority patent/MX2016013237A/es
Priority to EA201692195A priority patent/EA035191B1/ru
Priority to GB1617603.4A priority patent/GB2539356B/en
Priority to CA2942542A priority patent/CA2942542C/fr
Publication of WO2015168429A2 publication Critical patent/WO2015168429A2/fr
Publication of WO2015168429A3 publication Critical patent/WO2015168429A3/fr
Priority to NO20161539A priority patent/NO20161539A1/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
    • E21B36/00—Heating, cooling or insulating arrangements for boreholes or wells, e.g. for use in permafrost zones
    • E21B36/001—Cooling arrangements
    • 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
    • E21B33/06—Blow-out preventers, i.e. apparatus closing around a drill pipe, e.g. annular blow-out preventers
    • 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
    • E21B33/08—Wipers; Oil savers
    • 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
    • E21B33/08—Wipers; Oil savers
    • E21B33/085—Rotatable packing means, e.g. rotating blow-out preventers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/10—Geothermal energy

Definitions

  • the subject matter generally relates to systems and techniques in the field of oil and gas operations. Reduction of heat in rotating control devices (RCDs) improves the life of such RCDs.
  • RCDs rotating control devices
  • pressure control equipment may be placed near the surface of the earth.
  • the pressure control equipment may control the pressure in the wellbore while drilling, completing and producing the wellbore.
  • the pressure control equipment may include blowout preventers (BOP), rotating control devices (RCDs), and the like.
  • BOP blowout preventers
  • RCD rotating control devices
  • the RCD is a drill-through device with a rotating seal that contacts and seals against the drill string (drill pipe with tool joints, casing, drill collars, Kelly, etc.) for the purposes of controlling the pressure or fluid flow to the surface.
  • RCDs and other pressure control equipment are used in underbalanced drilling (UBD) and managed pressure drilling (MPD), which are relatively new and improved drilling techniques, and work particularly well in certain offshore drilling environments. Both technologies are enabled by drilling with a closed and pressurizable circulating fluid system as compared to a drilling system that is open- to-atmosphere at the surface.
  • Managed pressure drilling is an adaptive drilling process used to more precisely control the annular pressure profile throughout the wellbore. MPD addresses the drill-ability of a prospect, typically by being able to adjust the equivalent mud weight with the intent of staying within a "drilling window" to a deeper depth and reducing drilling non-productive time in the process.
  • the drilling window changes with depth and is typically described as the equivalent mud weight required to drill between the formation pressure and the pressure at which an underground blowout or loss of circulation would occur.
  • the equivalent weight of the mud and cuttings in the annulus is controlled with fewer interruptions to drilling progress while being kept above the formation pressure at all times.
  • An influx of formation fluids is not invited to flow to the surface while drilling.
  • Underbalanced drilling (UBD) is drilling with the hydrostatic head of the drilling fluid intentionally designed to be lower than the pressure of the formations being drilled, typically to improve the well's productivity upon completion by avoiding invasive mud and cuttings damage while drilling.
  • An influx of formation fluids is therefore invited to flow to the surface while drilling.
  • the hydrostatic head of the fluid may naturally be less than the formation pressure, or it can be induced.
  • an improved system for cooling radial seals and the bearing section of an RCD is desired, particularly a system which is able to function in environments with or without an external control system. If the radial seals are not sufficiently cooled, the localized temperature at the sealing surface will rise until the temperature limitations of the seal material is reached and degradation of the radial seal begins. High pressure, velocity and temperature conditions at increasing lengths of time affect and reduce the length of usable life for a seal. In order to obtain sufficient life from radial seals, the rate of heat extraction should be fast enough to allow the temperature at the sealing surface to level off at a temperature lower than that of the seal material's upper limit.
  • US Pub. No. 2006/0144622 proposes a system and method for cooling a RCD while regulating the pressure on its upper radial seal.
  • Gas, such as air, and liquid, such as oil, are alternatively proposed for use in a heat exchanger in the RCD.
  • a hydraulic control system is proposed to provide fluid to energize a bladder of an active seal to seal around a drilling string and to lubricate the bearings in the RCD.
  • the disclosure relates to apparatus and methods for cooling a RCD at a wellbore including a bearing assembly configured for operating in the RCD.
  • a fixed latch with a heat exchanger system and a volume of a cooling medium is configured for reducing heat proximate the bearing assembly, an inner member, and one or more seals between the bearing assembly and the inner member.
  • RCD or “RCDs” and the phrases “pressure control equipment”, “pressure control apparatus” or “pressure control device(s)” shall refer to well related pressure control equipment/apparatus/device(s) including, but not limited to, rotating-control-device(s), active rotating control devices, blowout preventers (BOPs), and the like.
  • Figure 1 depicts a schematic view of a well site having pressure control devices for sealing an item or piece of oilfield equipment.
  • Figure 2 depicts a cross sectional view of a pressure control device embodiment having a fixed latch with a heat exchanger therein and a heat exchanger system.
  • Figure 3 depicts a cross sectional view of half of a pressure control device embodiment having a carrier having a pressure reduction system and a heat exchanger profile.
  • Figure 1 depicts a schematic view of a well site 100 having pressure control devices 102 for sealing a rotating drill string or other piece of oilfield equipment 122.
  • the well site 100 may have a wellbore 106 formed in the earth and lined with a casing 108.
  • the one or more pressure control devices 1 02 may control pressure in the wellbore 106.
  • the pressure control devices 1 02 may include, but are not limited to, BOPs, RCDs, and the like.
  • Risers 107 may be positioned above, with and/or below the pressure control devices 102.
  • the risers 107 may present challenges to introducing lubricants, coolants, lubrication systems and/or cooling systems for the pressure control devices 102.
  • the top pressure control device 102 is an RCD 1 14.
  • a staged seal 1 16 may be part of a bearing assembly 1 17a located in the RCD 1 14.
  • the staged seal 1 1 6 may be a radial seal having a pressure reduction system 1 18.
  • the pressure reduction system 1 18 may be a closed piston system configured to stage pressure across the staged seal 1 1 6.
  • the staged seal 1 16 may be configured to engage and seal an inner member 104 during oilfield operations.
  • the inner member 104 may be any suitable, rotatable equipment to be sealed by the staged seal 1 1 6.
  • a pressure control device 102 is located directly below the RCD 1 14 (as shown) and may be a sealing device 1 19.
  • the sealing device 1 19 may have stripper rubbers 120 for sealing against the rotating drill string or piece of oilfield equipment
  • the bearing assembly 1 17b may have a fixed latch (or RCD body) 126 configured to engage a bearing 128.
  • the stripper rubbers 120 may engage the rotating drill string 122 as the drill string 122 is inserted into the wellbore 106.
  • the fixed latch 126 may have a heat exchanger 130 (see Figure 2) built into the latch in order to cool the latch as will be discussed in more detail below.
  • the RCD 1 14 with the staged seal 1 1 6 does not necessarily, although can be, used above or with the RCD 1 14 with the sealing device 1 19.
  • Figure 2 depicts a cross sectional view of the pressure control device 102 having the fixed latch 126 with a heat exchanger profile 400 therein.
  • the fixed latch 126 may secure a bearing assembly 402 within the pressure control device 102.
  • the fixed latch 126 and bearing assembly 402 may allow the inner member 104 to rotate relative to the fixed latch 126 and bearing assembly 402 as the drill string 122 is run through the pressure control device 102.
  • the motion creates friction between the inner member 104 and an inner surface 407 of the bearing assembly 402.
  • the friction may cause heating in both the bearing assembly 402 and the seals or shaft seals 406, which lie between the bearing assembly 402 and the inner member 104.
  • the increased heat decreases life span of the seals 406 and the bearing assembly 402.
  • the bearing assembly 402 and the seals 406 may respectively be any suitable bearing assembly and seals used in the pressure control device 102 including those described herein.
  • the heat exchanger profile 400 may cool the fixed latch 126, and bearing assembly 402 during operation thereby extending the life of the seals 406 and bearing assembly 402. This may further allow the bearing assembly 402 to operate or be operational with a self-contained lubricant (i.e. an integral bearing assembly
  • the heat exchanger profiles 400 may be fluid passages 401 through the interior surface area 403 of the fixed latch 126.
  • the fluid passages 401 may be configured to maximize the interior surface area
  • the heat exchanger profile 400 may be coupled to or integral with a heat exchanger system 408 and may cool through or from either side of the RCD 1 14.
  • the heat exchanger system 408 may include, but is not limited to, a heat exchanger 410, a tank 41 1 for containing a volume of cooling medium or coolant 405, a pump 412, an optional separate condenser 409, and one or more conduits 414.
  • the heat exchanger 410 may be any suitable device for cooling the fluid, a quantity or volume of cooling medium 405, circulating through the conduit 414 including, but not limited to, the exposed sea temperature on the conduit 414, a shell and tube exchanger, and the like.
  • the pump 412 may be any suitable device for circulating the quantity of cooling medium 405 from the tank 41 1 through the conduit 414.
  • the optional separate condenser 409 may be included to condense any gases or fluids after having circulated the fluid passages 401 and conduits 414.
  • the optional separate condenser 409 may be located near the outlet 415b but could also be located near the inlet 415a or intermediate thereto.
  • the pump 412 may be any suitable device for delivering the quantity of cooling medium 405 through the heat exchanger system 408 including, but not limited to, a centrifugal pump, a reciprocating pump, and the like.
  • the quantity of cooling medium 405 may be any suitable medium for cooling the heat exchanger system 408 including, but not limited to, water, sea water, refrigerant, refrigerant mixtures, liquids (including those that remain in a liquid state during the heat exchange process) or gasses, air, oil and/or the like.
  • the inner member 104 may further include an insulating coating 41 6 on the inner surface 142 of the inner member 104.
  • the insulating coating 41 6 may be configured to reduce heat transfer from the inner surface 142 of the inner member 104 caused by heated wellbore fluids to the seals 406. This additional cooling may prevent the wear on the seals 406.
  • the insulating coating 416 may be made of ceramic, refractory, hard rubber, fiberglass, composite, elastomer, and/or thermal/electrical materials of suitable thickness for insulating a passage of inner member 104.
  • the insulating coating 416 may extend to one or more surfaces on the stripper rubber mount 132 to which the stripper rubber(s) 120 are attached to.
  • FIG 3 depicts a cross sectional view of half of a pressure control device 102 embodiment having a carrier 500 (see US Provisional Appl. No. 61 /986,544, filed on April 30, 2014, which is herein incorporated by reference) having the pressure reduction system 1 18 and in the heat exchanger profile 400.
  • the carrier 500 as shown is configured to support a seal element 502 for engaging the drill string 122.
  • the seal element 502 may be configured to seal drill string 122 as the drill pipe is run into or out of the wellbore 106 (as shown in Figure 1 ).
  • the carrier 500 may be located below, above or within the bearing assembly 1 17 of an RCD 1 14.
  • the pressure reduction system 1 18 may operate in the same manner as described in US Provisional Appl. No.
  • the pressure reduction system 1 18 may be controlled by a hydraulic unit or controller in order to maintain the pressure on the outer radial surface 504 of the seal element 502.
  • the heat exchanger profile 400 may operate in the same manner as described in conjunction with Figure 2. To this end, the heat exchanger profile 400 may be a part of the heat exchanger system 408 and have the heat exchanger 410, the pump 412 and the conduit 414 (as shown in Figure 2). A carrier inlet 510 and a carrier outlet (not pictured) may continue or extend the heat exchanger profiles 400 from the fixed latch 126 into the carrier 500 (or from another heat exchanger profile 400 independent of the fixed latch 126), allowing the cooling medium 405 to circulate through the carrier 500. The heat exchanger profile 400 in the carrier 500 may reduce the heat in the carrier 500 and thereby reduce the temperature of the volume of fluid 303 applying pressure to the seal element 502.
  • the carrier 500 may have a layer of insulating coating 506 on the carrier's surfaces 508 (by way of example on the outer or exterior surface) to help reduce heat transfer caused by heated wellbore fluids.
  • the decreased temperature applied to the seal element 502 may reduce wear and increase the life of the seal element 502.
  • the heat exchanger system 408, heat exchanger profile 400, and carrier 500 may be a closed hydraulic control system 420, thereby eliminating the need for an external cooling system to control the temperature of the pressure control device 102.
  • a closed hydraulic system 420 may relieve demand on limited resources, and further, addresses difficulty in installing and maintaining an external cooling system in extreme environments. Risers 107, used in subsea operations, may also pose significant obstacles to the use of external cooling systems.

Landscapes

  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Physics & Mathematics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Mounting Of Bearings Or Others (AREA)
  • Earth Drilling (AREA)
  • Sliding-Contact Bearings (AREA)
  • Support Of The Bearing (AREA)
  • Rolling Contact Bearings (AREA)

Abstract

L'invention se rapporte à un appareil et à des procédés permettant de refroidir un RCD au niveau d'un puits de forage comprenant un ensemble palier configuré de sorte à fonctionner dans le RCD. Un verrou fixe ayant un système d'échangeur de chaleur et un volume d'un milieu de refroidissement est configuré de sorte à réduire la chaleur à proximité de l'ensemble palier, d'un élément interne et d'un ou plusieurs joints d'étanchéité entre l'ensemble palier et l'élément interne.
PCT/US2015/028555 2014-04-30 2015-04-30 Procédés de refroidissement d'ensemble palier WO2015168429A2 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
AU2015253003A AU2015253003B2 (en) 2014-04-30 2015-04-30 Bearing assembly cooling methods
MX2016013237A MX2016013237A (es) 2014-04-30 2015-04-30 Metodos de enfriamiento para ensamble de cojinetes.
EA201692195A EA035191B1 (ru) 2014-04-30 2015-04-30 Система для уменьшения нагрева в устройстве управления давлением и соответствующий способ
GB1617603.4A GB2539356B (en) 2014-04-30 2015-04-30 Bearing assembly cooling methods
CA2942542A CA2942542C (fr) 2014-04-30 2015-04-30 Procedes de refroidissement d'ensemble palier
NO20161539A NO20161539A1 (en) 2014-04-30 2016-09-26 Bearing assembly cooling methods

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201461986661P 2014-04-30 2014-04-30
US61/986,661 2014-04-30

Publications (2)

Publication Number Publication Date
WO2015168429A2 true WO2015168429A2 (fr) 2015-11-05
WO2015168429A3 WO2015168429A3 (fr) 2016-01-28

Family

ID=53175187

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2015/028555 WO2015168429A2 (fr) 2014-04-30 2015-04-30 Procédés de refroidissement d'ensemble palier

Country Status (8)

Country Link
US (1) US20150315874A1 (fr)
AU (1) AU2015253003B2 (fr)
CA (1) CA2942542C (fr)
EA (1) EA035191B1 (fr)
GB (1) GB2539356B (fr)
MX (1) MX2016013237A (fr)
NO (1) NO20161539A1 (fr)
WO (1) WO2015168429A2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023152563A1 (fr) * 2022-02-11 2023-08-17 Weatherford Technology Holdings, Llc Dispositif de régulation rotatif à refroidissement intégré pour paliers étanches

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BR112016022865B1 (pt) * 2014-04-30 2022-05-03 Weatherford Technology Holdings, Llc Conjunto e método de vedação para produzir uma vedação contra um componente de equipamento de campo petrolífero
US20190024473A1 (en) * 2017-07-18 2019-01-24 Schlumberger Technology Corporation Rotating annular preventer and methods of use thereof
US10494877B2 (en) 2017-08-16 2019-12-03 Weatherford Technology Holdings, Llc Subsea rotating control device apparatus having debris barrier
US11136848B2 (en) 2019-04-26 2021-10-05 NTDrill Holdings, LLC Rotating control device with cooling mandrel
US11255144B2 (en) * 2019-12-08 2022-02-22 Hughes Tool Company LLC Annular pressure cap drilling method

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5178215A (en) * 1991-07-22 1993-01-12 Folsom Metal Products, Inc. Rotary blowout preventer adaptable for use with both kelly and overhead drive mechanisms
US5251869A (en) * 1992-07-16 1993-10-12 Mason Benny M Rotary blowout preventer
US7836946B2 (en) * 2002-10-31 2010-11-23 Weatherford/Lamb, Inc. Rotating control head radial seal protection and leak detection systems
US7926593B2 (en) * 2004-11-23 2011-04-19 Weatherford/Lamb, Inc. Rotating control device docking station

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023152563A1 (fr) * 2022-02-11 2023-08-17 Weatherford Technology Holdings, Llc Dispositif de régulation rotatif à refroidissement intégré pour paliers étanches
US11808111B2 (en) 2022-02-11 2023-11-07 Weatherford Technology Holdings, Llc Rotating control device with integrated cooling for sealed bearings

Also Published As

Publication number Publication date
EA035191B1 (ru) 2020-05-12
EA201692195A1 (ru) 2017-02-28
GB2539356A (en) 2016-12-14
MX2016013237A (es) 2017-01-09
NO20161539A1 (en) 2016-09-26
WO2015168429A3 (fr) 2016-01-28
AU2015253003A1 (en) 2016-09-29
US20150315874A1 (en) 2015-11-05
CA2942542A1 (fr) 2015-11-05
AU2015253003B2 (en) 2017-02-02
GB201617603D0 (en) 2016-11-30
GB2539356B (en) 2019-01-23
CA2942542C (fr) 2018-02-27

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