WO2013022501A1 - Système modulaire de traitement de gaz - Google Patents

Système modulaire de traitement de gaz Download PDF

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Publication number
WO2013022501A1
WO2013022501A1 PCT/US2012/033525 US2012033525W WO2013022501A1 WO 2013022501 A1 WO2013022501 A1 WO 2013022501A1 US 2012033525 W US2012033525 W US 2012033525W WO 2013022501 A1 WO2013022501 A1 WO 2013022501A1
Authority
WO
WIPO (PCT)
Prior art keywords
skid
raceway
heater
treater
production
Prior art date
Application number
PCT/US2012/033525
Other languages
English (en)
Inventor
Jerrold GILL
Original Assignee
Sti Group
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 Sti Group filed Critical Sti Group
Publication of WO2013022501A1 publication Critical patent/WO2013022501A1/fr

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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
    • E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/34—Arrangements for separating materials produced by the well

Definitions

  • the present invention relates to gas processing systems and more particularly, to transportable, modular gas processing systems for installation at an oil and/or gas well site.
  • the production stream from the well head is directed to a first separation zone, which can comprise a 2-phase separator (separating liquids and gas), a 3-phase separator (separating oil, water, and gas), or a 4-phase separator (separating oil, water, gas, and solids).
  • the gas passing through the first separation zone is then directed to a compressor or other gathering system.
  • the liquids from the first separation zone can then be sent to a second separation zone or to a heater/treater, wherein additional gas is recovered and the oil and water are further separated.
  • the recovered oil can either be directed to an oil storage tank or to a vapor recovery tower, while the water is sent to a water storage tank or other reclamation zone.
  • prior art on-site gas processing facilities generally comprise a phase separation system to separate gas, water, oil (liquid hydrocarbons) and solids.
  • each component of the system such as the towers, separators, treaters, pumps, storage tanks, connector piping, auxiliary equipment, as well as any containment components must be delivered to the well pad which is typically a 200 ft x 300 ft cleared site.
  • erection equipment e.g., cranes
  • one of the main problems at well sites and treating facilities of the type under consideration is that spills of oil, water-oil mixtures, and the like can occur causing serious environmental problems.
  • this problem has been addressed by building berms around the equipment, tanks, etc., the berms forming a pond-like enclosure which is generally lined with a material or substrate preventing the spilled material from migrating into the ground. Building of berms surrounding specifically prepared substrate on which the components of the system are positioned is time consuming, labor intensive and expensive.
  • One aspect of the present invention provides a modular gas processing system comprised of self-contained portable skids upon which is mounted the necessary components of the processing system, and necessary piping sufficient to provide a "plug and play" gas processing system.
  • the modular system of the present invention provides highway transportable skids which can be rapidly deployed to a well site using trucks, trailers, and other such vehicles or carriers which can be legally used on regulated highways leading to the well site.
  • the invention provides a modular gas processing system comprised of a production skid, a heater treater skid, and at least one raceway skid, preferably two raceway skids, and move preferably three raceway skids which support necessary piping to connect the production skid to the heater treater skid and other necessary conduits, components, facilities or the like, of the processing system.
  • Fig. 1 shows an overall, perspective view of a modular system of the present invention installed at a well site.
  • Fig. 2 is a perspective view of one embodiment of a production skid of the present invention.
  • Fig. 3 is a perspective view of one embodiment of a heater treater skid of the present invention.
  • Fig. 4 is a perspective view of one embodiment of two of the raceway skids of the present invention.
  • Fig. 5 is a perspective view of one embodiment of another raceway skid used in the present invention.
  • Fig. 6 is an elevational view, partly in section, of a portion of a skid showing the containment of liquids and an apparatus for removing the contained liquids.
  • Fig. 7 is an elevational view showing the use of a flex connection in one embodiment of the present invention.
  • Fig. 8 is an elevational view, partly in section, showing one apparatus allowing the VRT to pivot between generally horizontal and generally vertical positions.
  • Fig. 9 is a top, plan view taken along the lines 9— 9 of Fig. 8.
  • Fig. 10 is a view similar to Fig. 8 but showing the VRT moved from the vertical position shown in Fig. 8 to a generally horizontal position.
  • one of the main skids comprises a first gas-liquid separator system and can comprise two separators, a flare scrubber, and a vapor recovery tower, while the other main skid, which is physically separated from the first main skid, comprises the heater treater unit, i.e., a second gas-liquid separator system.
  • the heater treater unit i.e., a second gas-liquid separator system.
  • a fifth skid which also is basically a pipe rack for piping, connects piping from the other two pipe skids to a facilities station at the well site.
  • the present invention in one embodiment, can have five skids albeit that three of the skids are mainly pipe racks. However, for maximum modularity, preferably all five skids are used.
  • a feature of the present invention is that the need for constructing large berms is greatly reduced.
  • the skids for the two main processing units from which spills most frequently occur comprises trays or pans which collect any spilled material.
  • the trays are provided with pumps connected by suitable piping to both of the main skids, such that if there is a spill, or if there is excessive rainfall which fills the pans or trays, an automatic float system or other automatic level sensing system turns on the pump and pumps the accumulation of liquid in the skid pans or trays to one of the storage/collector tanks in a tank battery.
  • a further important feature of the present invention is that the connections between the two main skid units and the pipeline skids can be done by flex connections, meaning that there is no necessity for on-site plumbing requiring accurate measuring, cutting, welding, etc.; i.e., the flex connections allow quick connection between the pipeline racks and the two main skids.
  • flex connections allow quick connection between the pipeline racks and the two main skids.
  • the piping from equipment on production skid 16 is connected, preferably by flex connectors (described hereafter), to the piping on the first raceway skid 18 which in turn in connected, preferably by flex connectors, to the piping on a second raceway skid 20.
  • the piping on the skid 20 is also connected, preferably by flex connectors, to piping on a heater treater skid shown generally as 22.
  • a third raceway skid 22 has piping which connects, preferably via flex connectors, to a facilities station shown generally as 24.
  • Facilities station 24 is typical of those at a gas processing well site and can comprise pumps, compressors, generators and other equipment normally used in the operation of an on-site gas processing facility.
  • the well site 10 also includes a tank battery shown generally as 26, having tanks 26A-26D for storage of water, oil and other liquid hydrocarbons.
  • Tank battery 26 is connected via suitable piping indicated in phantom at 28 to necessary piping coming from production skid 16, heater treater skid 22, as well or facilities station 24.
  • Tank battery 26 sits on a prepared pad 27 surrounded by berm 28, the pad 27 being formed of a material or substrate which, to the extent practicable, prevents the migration of any spill of oil and/or contaminated water into the ground beneath the tank battery 26.
  • recovered natural gas and other normally gaseous hydrocarbons emanating from wellhead 12 can be introduced into a pipeline or other gathering facility (not shown) located at site 10 or, in certain cases, can be compressed on site and stored in a suitable pressure vessel.
  • FIG. 2 there is shown one of the main skids, i.e., the production skid 16.
  • Production skid 16 as seen with reference to Figs. 2 and 6 has a bottom wall 30 (see Fig. 6), side walls 32 and 34, and opposite end walls, one of which is shown in Fig. 2 as 38.
  • the end walls in conjunction with side walls 32 and 34 and bottom wall 30 form a pan or tray-like containment structure.
  • Mounted on the top of skid 16 is a work surface 36 which can be comprised at least partially of metal grate or the like commonly used in industrial facilities such as refineries, chemical plants, etc.
  • metal grate is preferable in that it ensures that any leakage from equipment on skid 16 falls into the pan or tray-like containment structure rather than running off onto the ground surrounding the skid, which would be the case if a solid plate-like support surface were employed.
  • skid 16 as well as skid 22, described more fully hereafter, is a fabricated structure which basically comprises a framework made of steel beams, cross braces, (as described below with respect to raceway skids 18, 20 and 21 ) and any other necessary structural components as described or readily apparent to those of skill in the art to ensure that the skid(s) 16 and 22 can support the weight of any vessels, equipment and the like placed thereon, but yet be light enough to as to be transported by carriers, e.g., trailers, tractor trailers, etc. which can move over regulated highways.
  • carriers e.g., trailers, tractor trailers, etc. which can move over regulated highways.
  • the skids 16 and 22, and for that matter, the raceway skids described hereafter, if necessary, will have a pull bar such as bar 17 shown on skid 16 which can be grasped by any number of devices for pulling the skid, if necessary, either on the ground, on a concrete pad, or up a ramp onto a suitable carrier for transportation.
  • the skids could be provided with retractable wheels, rollers, or the like, which could be used to more easily maneuver the skids into position either during fabrication or at the well site, the wheels or rollers, then being retracted, such that the bottom framework of the skid would sit on the well site.
  • production skid 16 comprises a vapor recovery tower (VRT) 40 well known to those skilled in the art.
  • VRT 40 can rest in a generally horizontal position, a portion laying on a cradle 42 affixed to production skid 16 such that the production skid 16 can be transported along regulated highways.
  • the VRT 40 can be moved to a generally vertical position when in operation.
  • Production skid 16 can also comprise a flare scrubber 44, one or more separators, e.g., a high pressure separator 46 and a low pressure separator 48.
  • Skid 16 can also carry a tool box 50 for tools customarily used in connection with any servicing of equipment on production skid 16.
  • a tool box 50 for tools customarily used in connection with any servicing of equipment on production skid 16.
  • piping indicated generally at 40, valving, etc. which although not shown is well known to those skilled in the art.
  • the operation of VRT's, separators, flare scrubbers, and associated equipment is well known to those skilled in the art.
  • FIG. 8-10 there is shown one assembly that can be used such that VRT 40 can be secured to skid 16 in such a way that it can be moved from a generally horizontal position for transport to a generally vertical position when in use.
  • a frame shown generally as 79 comprising upper and lower collars 80 and 82, respectively, which encircle VRT 40.
  • Frame 79 further comprises a plurality of circumferentially displaced struts 83 which are secured to collars 80 and 82 whereby a frame is formed in a cage-like structure.
  • Collars 80 and 82 as seen with particular reference to Fig. 9, but also with reference to Figs. 8 and 10, comprise first and second jaw members 84 and 86 which cooperate to define a circular opening 88 having a diameter substantially the same as the OD of VRT 40.
  • diameter 88 would be slightly smaller than that of the OD of VRT 40 such that when the jaw members 84 and 86 are securedly connected to one another by means of flange/nut-bolt assemblies 90 and 92, jaws 84 and 86 will be tightly compressed against VRT 40.
  • collar 82 is comprised of first and second jaw members 94 and 96.
  • collar 82 is similar to collar 80 in having jaw members 94 and 96 which can be flanged together or for that matter, hinged. However, collar 82 is also provided with hinge leafs 98 and 100 which are pivotally connected by means of pivot pins 106 and 108 to brackets 102 and 104, respectively, which in turn are secured to a structural cross beam 1 10 forming part of the frame of skid 16. Additionally, collar 82 is provided with a laterally outwardly extending flange 1 12 which rests on a support plate 1 14 which in turn is connected by support member 1 16 to another crossbeam 1 18.
  • production skid 16 comprises an initial gas/liquids separation system.
  • skid 16 includes a VRT as well as a high pressure separator 46 and a low pressure separator 48, a flare scrubber, etc.
  • the VRT may be dispensed with in favor of high and/or low pressure separators.
  • a VRT serves to insulate the compressors from gas surges and is generally more tolerant to higher and lower pressures.
  • the VRT makes for more stable pressures and allows better operation.
  • skid 16 can be considered as comprising a gas/liquids separation system.
  • heater treater skid 22 which also comprises a gas-liquid separator system.
  • Heater treater skid 22 carries a heater treater unit 50.
  • a heater treater unit 50 as is well known, is a combination of a heater, a free-water knockout, and an oil and gas separator. The operation and construction of heater treaters is well known to those skilled in the art and need not be described in detail here.
  • the raceway skids are comprised of metal beams 60, and cross-pieces 61 welded or otherwise securely affixed to one another to form a generally rectangular base shown generally as 63.
  • the raceway skids Securely mounted on each of the bases 63 and extending upward therefrom are a plurality of spaced pipe supports or racks 62 on which piping shown generally as 64 rests.
  • the supports 62 can be provided with saddles or cradles in which the undivided pipe segments 64 can nest, if desired.
  • skids 16 and 22 generally form pan-like structures which collect spilled liquids from equipment on those skids.
  • Fig. 6 it can be seen that spilled liquids including rain water has collected in a pan.
  • each of the skids having a pan or tray is also provided with one or more pumps P (see Fig. 6) which is connected to a float 70 or some other automatic, liquid level sensor system which will turn pump P on when the liquid in the skid reaches a certain level.
  • the pump P is connected by suitable piping, e.g., pipe 62, to one of the tanks in the tank battery 26 where pumped liquids can be later processed or disposed of in an environmentally friendly manner.
  • the modular system of the present invention provides decided advantages over prior art on site gas processing facilities.
  • the modular system of the present invention combines all necessary equipment and hookups to separate the gas, oil, water and solid components produced from land drilled wells.
  • the portable skids used in the modular system have built-in connection piping that can be connected to each other by flex connectors in a plug-and-play method.
  • the flex connections cut installation time and eliminate many plumbing operations that are necessary on prior art well site gas processing facilities. Additionally, and as described above, several of the skids have built in containment to mitigate and even eliminate environmental impact.
  • piping between the various skids can be connected by means of flex connections which greatly enhance the speed of assembly of the gas processing system, reduces labor and also reduces waste that is typically associated in rigid plumbing operations.
  • Fig. 7 for a typical flex connection between piping from two different skids.
  • Piping 64 on skid 20 is connected to piping 64 on skid 18 via flex connection 160.
  • flex connection 160 and flanges 162 and 164 at opposite ends, flange 162 being mated with flange 166 on piping 64 from skid 20, flange 164 being mated with flange 168 on piping 64 from skid 18.
  • the flanges are connected by nut and bolt assemblies.
  • the flex pipe 160 can be of metal and/or composite construction, both of which can be made to withstand high pressures.
  • flex pipe 160 can be made of metal hose and braid or of concentric layers of thermoplastic (in an hour glass) and a core of reinforcing material (steel or fiber).
  • thermoplastic in an hour glass
  • steel or fiber a core of reinforcing material
  • composite flex pipe may also avert the need for cathodic protection because of the protective thermoplastic jacket.
  • the modular system of the present invention comprises five different skids, i.e., a production skid, a heater treater skid, and three raceway skids.
  • the production skid can comprise a high pressure separator, a low pressure separator, a vapor recovery tower (VRT), flare scrubber, a fuel pot, and a coalescing filter together with all necessary connection piping, valving, controllers etc.
  • the heater treater skid can comprise a heater treater, a fuel pot, and a coalescing filter along with all necessary valving, piping, controllers, etc..
  • flex connections are used between the various skids.
  • VRT mount is hinged such that the skid carrying the VRT can, like the other skids, be transported on regulated highways using conventional trucks, trailers or the like customarily used to transport heavy equipment, i.e., the VRT can be moved to a substantially horizontal position for transport.
  • Another distinct advantage of the modular system of the present invention is that if a given well is abandoned, virtually all of the processing equipment and most of the piping can be recovered. In prior art systems, when a well was abandoned, the well would be capped, the processing equipment would simply be shut down, and at least the piping cut up on site. In that event, some of the equipment as well as most of the piping was either left at the site or not available for future use.
  • piping connections can be easily disassembled, the skids can be picked up and moved and either recovered for scrap, and/or if still usable, moved to another well site.
  • the modular system of the present invention minimizes potential environmental damages from spills which can occur in prior art well site gas processing facilities. Since the skids which contain the processing equipment have collection pans or trays, any spilled liquids or collected rain water can be pumped to one of the tanks in the tank battery where it can be subsequently removed for processing or disposal.

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Pipeline Systems (AREA)

Abstract

L'invention porte sur un système de traitement de gaz destiné à être utilisé sur un site de puits de pétrole et/ou de gaz. Le système de traitement de gaz comprend un châssis mobile de production transportable comprenant un premier séparateur gaz/liquide, un châssis mobile d'élément chauffant/dispositif de traitement transportable comprenant un second séparateur gaz/liquide et au moins un châssis mobile de piste ayant une tubulure pour relier ledit châssis mobile de production audit châssis mobile d'élément chauffant/dispositif de traitement.
PCT/US2012/033525 2011-08-05 2012-04-13 Système modulaire de traitement de gaz WO2013022501A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201161515618P 2011-08-05 2011-08-05
US61/515,618 2011-08-05

Publications (1)

Publication Number Publication Date
WO2013022501A1 true WO2013022501A1 (fr) 2013-02-14

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103510922A (zh) * 2013-10-14 2014-01-15 四川恒重清洁能源成套装备制造有限公司 一种用于储气库的注采分配计量结构
WO2017177156A1 (fr) * 2016-04-08 2017-10-12 Green Flow Industries, LLC Appareil de séparation et de surveillance
US10862307B2 (en) 2018-08-01 2020-12-08 Crusoe Energy Systems Inc. Systems and methods for generating and consuming power from natural gas
US11136873B2 (en) 2017-04-11 2021-10-05 Kustom Koncepts, Inc. Skid mounted oil well production processing system
US11574372B2 (en) 2017-02-08 2023-02-07 Upstream Data Inc. Blockchain mine at oil or gas facility
US11907029B2 (en) 2019-05-15 2024-02-20 Upstream Data Inc. Portable blockchain mining system and methods of use

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4659460A (en) * 1981-05-29 1987-04-21 Ecolochem, Inc. Mobile fluid purification unit
US4779677A (en) * 1987-05-19 1988-10-25 Incorporated Tank Systems, Inc. Oil well fluid processing system
US5082556A (en) * 1990-10-11 1992-01-21 Reese Martin W Separator, float shut-off valve, and orifice meter mounted as a unit of skid
US5287927A (en) * 1992-11-10 1994-02-22 David A. Pass Vapor recovery apparatus and method
US20080167390A1 (en) * 2006-06-01 2008-07-10 James Archer Defoamer composition for suppressing oil-based and water-based foams

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4659460A (en) * 1981-05-29 1987-04-21 Ecolochem, Inc. Mobile fluid purification unit
US4779677A (en) * 1987-05-19 1988-10-25 Incorporated Tank Systems, Inc. Oil well fluid processing system
US5082556A (en) * 1990-10-11 1992-01-21 Reese Martin W Separator, float shut-off valve, and orifice meter mounted as a unit of skid
US5287927A (en) * 1992-11-10 1994-02-22 David A. Pass Vapor recovery apparatus and method
US20080167390A1 (en) * 2006-06-01 2008-07-10 James Archer Defoamer composition for suppressing oil-based and water-based foams

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103510922B (zh) * 2013-10-14 2016-04-27 四川恒重清洁能源成套装备制造有限公司 一种用于储气库的注采分配计量结构
CN103510922A (zh) * 2013-10-14 2014-01-15 四川恒重清洁能源成套装备制造有限公司 一种用于储气库的注采分配计量结构
WO2017177156A1 (fr) * 2016-04-08 2017-10-12 Green Flow Industries, LLC Appareil de séparation et de surveillance
CN108883350A (zh) * 2016-04-08 2018-11-23 格林佛洛工业有限责任公司 分离和监测设备
US10722821B2 (en) 2016-04-08 2020-07-28 Green Flow Industries, LLC Separation and monitoring apparatus
US10722822B2 (en) 2016-04-08 2020-07-28 Green Flow Industries, LLC Separation and monitoring apparatus
US10758845B2 (en) 2016-04-08 2020-09-01 Green Flow Industries, LLC Separation and monitoring apparatus
US11574372B2 (en) 2017-02-08 2023-02-07 Upstream Data Inc. Blockchain mine at oil or gas facility
US11428090B2 (en) 2017-04-11 2022-08-30 Kustom Koncepts, Inc. Skid mounted oil well production processing system
US11136873B2 (en) 2017-04-11 2021-10-05 Kustom Koncepts, Inc. Skid mounted oil well production processing system
US11549350B2 (en) 2017-04-11 2023-01-10 Kustom Koncepts, Inc. Skid mounted oil well production processing system
US10862309B2 (en) 2018-08-01 2020-12-08 Crusoe Energy Systems Inc. Systems and methods for generating and consuming power from natural gas
US11437821B2 (en) 2018-08-01 2022-09-06 Crusoe Energy Systems Llc Systems and methods for generating and consuming power from natural gas
US11451059B2 (en) 2018-08-01 2022-09-20 Crusoe Energy Systems Llc Systems and methods for generating and consuming power from natural gas
US11418037B2 (en) 2018-08-01 2022-08-16 Crusoe Energy Systems Llc Systems and methods for generating and consuming power from natural gas
US10862307B2 (en) 2018-08-01 2020-12-08 Crusoe Energy Systems Inc. Systems and methods for generating and consuming power from natural gas
US11907029B2 (en) 2019-05-15 2024-02-20 Upstream Data Inc. Portable blockchain mining system and methods of use

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