NO319232B1 - Feed pump for a sand removal device in a underground well - Google Patents
Feed pump for a sand removal device in a underground well Download PDFInfo
- Publication number
- NO319232B1 NO319232B1 NO20034519A NO20034519A NO319232B1 NO 319232 B1 NO319232 B1 NO 319232B1 NO 20034519 A NO20034519 A NO 20034519A NO 20034519 A NO20034519 A NO 20034519A NO 319232 B1 NO319232 B1 NO 319232B1
- Authority
- NO
- Norway
- Prior art keywords
- sand
- feed pump
- removal device
- well
- sand removal
- Prior art date
Links
- 239000004576 sand Substances 0.000 title claims description 49
- 239000012530 fluid Substances 0.000 claims description 15
- 238000004519 manufacturing process Methods 0.000 description 6
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005755 formation reaction Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
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
- E21B27/00—Containers for collecting or depositing substances in boreholes or wells, e.g. bailers, baskets or buckets for collecting mud or sand; Drill bits with means for collecting substances, e.g. valve drill bits
-
- 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
- E21B37/00—Methods or apparatus for cleaning boreholes or wells
Landscapes
- 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)
- Jet Pumps And Other Pumps (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Description
MATEPUMPE FOR ET SANDFJERNINGSAPPARAT I EN UNDERGRUNNS BRØNN FEED PUMP FOR A SAND REMOVAL DEVICE IN AN UNDERGROUND WELL
Denne oppfinnelse vedrører en matepumpe for et sandfjerningsapparat i en undergrunnsbrønn. Nærmere bestemt dreier det seg om en matepumpe som leverer drivfluid til en strålepumpe i et sandfjerningsapparat. This invention relates to a feed pump for a sand removal device in an underground well. More specifically, it concerns a feed pump that supplies drive fluid to a jet pump in a sand removal device.
Ved produksjon av olje og gass er det et stadig forekommende problem at sand rives løs fra formasjonen og følger med inn i brønnen. Sand som følger med strømmen av olje eller gass, så-kalt produsert sand, kan føre til stor skade på produksjons-utstyr både i og utenfor brønnen. In the production of oil and gas, it is a constantly occurring problem that sand is torn loose from the formation and follows it into the well. Sand that accompanies the flow of oil or gas, so-called produced sand, can cause major damage to production equipment both inside and outside the well.
Mengden av produsert sand øker med økende strømningsrate, og et viktig tiltak mot sandproduksjon er således å begrense strømningsraten. Det er utviklet måleutstyr for å detektere produsert sand, slik at sandreduserende tiltak kan settes i verk før det oppstår så stor skade at produksjonsutstyret må repareres. The amount of sand produced increases with increasing flow rate, and an important measure against sand production is thus to limit the flow rate. Measuring equipment has been developed to detect produced sand, so that sand-reducing measures can be implemented before such great damage occurs that the production equipment must be repaired.
I tillegg er det vanlig å forsterke formasjoner som lett gir sand, for eksempel ved å injisere sand som er tilsatt et bin-demiddel, for eksempel sand/grus iblandet klebemiddel av den type blanding som benevnes "limgrus". Det er også kjent flere typer filter som kan installeres i brønnen for å hindre at løs sand får følge med opp gjennom brønnen. In addition, it is common to reinforce formations that easily yield sand, for example by injecting sand to which a binder has been added, for example sand/gravel mixed with an adhesive of the type of mixture known as "glue gravel". Several types of filter are also known which can be installed in the well to prevent loose sand from being carried up through the well.
Etter en tids bruk fylles brønnens nedre del med løs sand, og det blir stadig vanskeligere å opprettholde en akseptabel strømningsrate. Ved vedlikehold av en brønn er det derfor vanlig å forsøke å fjerne løs sand som har samlet seg i bun-nen av brønnen. Løs sand kan også følge av boring og annet arbeid i brønnen, og slik sand blir forsøkt fjernet før pro-duksjonsstart. After a period of use, the lower part of the well is filled with loose sand, and it becomes increasingly difficult to maintain an acceptable flow rate. When maintaining a well, it is therefore common to try to remove loose sand that has collected at the bottom of the well. Loose sand can also result from drilling and other work in the well, and such sand is tried to be removed before production starts.
Norsk patentskrift 306027 omhandler et sandfjerningsapparat omfattende en beholder med et lukkbart innløp for væske som er blandet med medrevet sand, og et separat utløp som er til-ordnet sugesiden av en strålepumpe. Strålepumpen utgjør appa-ratets drivanordning og forsynes med energi fra et tilfør-selsrør som forløper til overflaten. Norwegian patent document 306027 deals with a sand removal apparatus comprising a container with a closable inlet for liquid which is mixed with entrained sand, and a separate outlet which is assigned to the suction side of a jet pump. The jet pump forms the device's drive device and is supplied with energy from a supply pipe that leads to the surface.
Apparatet ifølge det nevnte patentskrift betinger således at en rørforbindelse for eksempel i form av en rørstreng eller et kveilrør føres ned i brønnen, idet apparatet er koplet til forbindelsesrørets nedre endeparti. The apparatus according to the aforementioned patent thus requires that a pipe connection, for example in the form of a pipe string or a coiled pipe, is led down into the well, the apparatus being connected to the lower end part of the connecting pipe.
Et relativt omfattende utstyr må være tilstede ved brønnen for å kunne utføre rørstreng- eller kveilrøroperasjoner av denne art, og sandfjerning ved hjelp av utstyr ifølge kjent teknikk faller derfor relativt kostbart. A relatively extensive equipment must be present at the well to be able to carry out pipe string or coiled pipe operations of this nature, and sand removal using equipment according to known technology is therefore relatively expensive.
Oppfinnelsen har til formål å avhjelpe ulempene ved kjent teknikk. The purpose of the invention is to remedy the disadvantages of known technology.
Formålet oppnås i henhold til oppfinnelsen ved de trekk som er angitt i nedenstående beskrivelse og i de etterfølgende patentkrav. The purpose is achieved according to the invention by the features indicated in the description below and in the subsequent patent claims.
Sandrensearbeid av denne art forenkles i vesentlig grad der-som sandfjerneapparatet er tilrettelagt for å kunne føres inn i brønnen ved hjelp av kabelutstyr. Sand cleaning work of this kind is greatly simplified where the sand removal device is arranged to be able to be introduced into the well using cable equipment.
Ved å forsyne sandfjerningsapparatet ifølge NO 306027 med en lokal matepumpe som er innrettet til å forsyne sandfjernings-apparatets strålepumpe (ejektor) med drivfluid, er sandfjerningsapparatet velegnet også for å være tilkoplet og føres inn i en brønn ved hjelp av en kabel. By supplying the sand removal device according to NO 306027 with a local feed pump which is designed to supply the sand removal device's jet pump (ejector) with drive fluid, the sand removal device is also suitable for being connected and led into a well by means of a cable.
I en foretrukket utførelsesform omfatter drivfluidmateren en matepumpe som drives ved hjelp av elektrisk kraft fra overflaten via en ledning som er tilknyttet kabelen. In a preferred embodiment, the drive fluid feeder comprises a feed pump which is driven by means of electric power from the surface via a line which is connected to the cable.
Matepumpen er innrettet til å pumpe fluid fra matepumpens om-givelse i brønnen og til strålepumpens drivside. The feed pump is designed to pump fluid from the feed pump's surroundings in the well and to the jet pump's drive side.
En sammontasje av matepumpen og sandfjerningsapparatet er også velegnet for å kunne transporteres inn i brønnen ved hjelp av for eksempel en brønntraktor. A joint installation of the feed pump and the sand removal device is also suitable for being transported into the well using, for example, a well tractor.
I det etterfølgende beskrives et ikke-begrensende eksempel på en foretrukket utførelsesform som er anskueliggjort på med-følgende tegninger, hvor.-Fig. 1 viser et sandfjerningsapparat med en påmontert matepumpe hvor piler indikerer fluidstrømningsretninger; og Fig. 2 viser et sandfjerningsapparat med en påmontert pakning. In what follows, a non-limiting example of a preferred embodiment is described which is illustrated in the accompanying drawings, where.-Fig. 1 shows a sand removal apparatus with an attached feed pump where arrows indicate fluid flow directions; and Fig. 2 shows a sand removal device with an attached seal.
På tegningene betegner henvisningstallet 1 en matepumpe som er anbrakt i en brønn 2 og hvor matepumpen 1 tilføres energi via en ledning 6 fra overflaten. In the drawings, the reference number 1 denotes a feed pump which is placed in a well 2 and where the feed pump 1 is supplied with energy via a line 6 from the surface.
Matepumpen 1 er forbundet til en kabels 8 (wireline) nedre endeparti. Kabelen 8 forløper til overflaten og ledningen 6 utgjør en del av kabelen 8. The feed pump 1 is connected to the lower end of a cable 8 (wireline). The cable 8 extends to the surface and the wire 6 forms part of the cable 8.
Matepumpens 1 utløp er koplet til et sandfjerningsapparat 10. The outlet of the feed pump 1 is connected to a sand removal device 10.
Sandfjerningsapparatet 10 omfatter et sandkammer 12 og en strålepumpe 14. Sandkammeret 12 er i sitt nedre parti forsynt med et innløp 16 for sandblandet fluid. Innløpet 16 er innrettet til å kunne stenges av en enveisventil 18. The sand removal apparatus 10 comprises a sand chamber 12 and a jet pump 14. The sand chamber 12 is provided in its lower part with an inlet 16 for sand-mixed fluid. The inlet 16 is designed to be closed by a one-way valve 18.
Innvendig i sandkammeret 12 er det anordnet et filter 20. Filteret 20 dekker et ikke vist utløp fra sandkammeret 12 idet det ikke viste utløp kommuniserer med en strålepumpes 14 sugeside. Strålepumpens 14 utløp 22 munner ut i brønnen 2. A filter 20 is arranged inside the sand chamber 12. The filter 20 covers an outlet not shown from the sand chamber 12, the outlet not shown communicating with the suction side of a jet pump 14. The outlet 22 of the jet pump 14 opens into the well 2.
Matepumpens 1 utløp kommuniserer med strålepumpens 14 drivside. The feed pump's 1 outlet communicates with the jet pump's 14 drive side.
Når sandfjerningsapparatet 10 og matepumpen 1 er anbrakt ved brønnens 2 bunnparti, startes matepumpen 1 ved at elektrisk kraft tilføres matepumpen 1 via ledningen 6. Fluid strømmer via matepumpens 1 innløpsåpninger 24 og matepumpen 1 til strålepumpen 14, hvorved et undertrykk opprettes på strålepumpens 14 sugeside. Fluid medbringende medrevet sand 26 strømmer derved gjennom innløpet 16, tilbakeslagsventilen 18 og inn i sandkammeret 12. Fluidet renses for sand i filteret 20 og strømmer videre til strålepumpen 14 hvorfra det sammen med fluidet fra matepumpen 1 strømmer ut i brønnen 2 via strålepumpens 14 utløp 22. When the sand removal device 10 and the feed pump 1 are placed at the bottom of the well 2, the feed pump 1 is started by supplying electric power to the feed pump 1 via line 6. Fluid flows via the feed pump 1's inlet openings 24 and the feed pump 1 to the jet pump 14, whereby a negative pressure is created on the jet pump 14's suction side. Fluid entrained sand 26 thereby flows through the inlet 16, the non-return valve 18 and into the sand chamber 12. The fluid is cleaned of sand in the filter 20 and flows on to the jet pump 14 from where it, together with the fluid from the feed pump 1, flows out into the well 2 via the outlet 22 of the jet pump 14 .
En del av det fra strålepumpen 14 utstrømmende fluid strømmer ned mot brønnens 2 bunnparti og river med seg sand 26 som befinner seg nede i brønnen 2, før det igjen strømmer inn i innløpet 16. Part of the fluid flowing out from the jet pump 14 flows down towards the bottom of the well 2 and sweeps sand 26 down in the well 2 with it, before it again flows into the inlet 16.
Etter at sandkammeret 12 er fylt opp, trekkes matepumpen 1 og sandfjerningsapparatet 10 opp til overflaten ved hjelp av kabelen 8 for å tømmes. After the sand chamber 12 has been filled, the feed pump 1 and the sand removal device 10 are pulled up to the surface by means of the cable 8 to be emptied.
I fig. 2 er strålepumpen 14 forsynt med en pakning 28 som er innrettet til å kunne stenge mot brønnens 2 vegg. Strålepumpen kan i denne utførelse bidra til å løfte de relativt tunge fluider som anvendes ved brønnvedlikehold til overflaten for derved hurtigere å igangsette produksjonen i en brønn 2. In fig. 2, the jet pump 14 is provided with a seal 28 which is arranged to be able to close against the wall of the well 2. In this version, the jet pump can help to lift the relatively heavy fluids used in well maintenance to the surface in order to start production in a well 2 more quickly.
Claims (3)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NO20034519A NO319232B1 (en) | 2003-10-09 | 2003-10-09 | Feed pump for a sand removal device in a underground well |
PCT/NO2004/000301 WO2005033471A1 (en) | 2003-10-09 | 2004-10-07 | A feed pump for a sand removal apparatus in an underground well |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NO20034519A NO319232B1 (en) | 2003-10-09 | 2003-10-09 | Feed pump for a sand removal device in a underground well |
Publications (2)
Publication Number | Publication Date |
---|---|
NO20034519D0 NO20034519D0 (en) | 2003-10-09 |
NO319232B1 true NO319232B1 (en) | 2005-07-04 |
Family
ID=29417595
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NO20034519A NO319232B1 (en) | 2003-10-09 | 2003-10-09 | Feed pump for a sand removal device in a underground well |
Country Status (2)
Country | Link |
---|---|
NO (1) | NO319232B1 (en) |
WO (1) | WO2005033471A1 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008058540A1 (en) * | 2006-11-15 | 2008-05-22 | Welltec A/S | Fluid cleaner |
CN101641489B (en) | 2007-02-28 | 2012-11-28 | 韦尔泰克有限公司 | Drilling tool with fluid cleaner |
GB2454884B (en) * | 2007-11-22 | 2011-11-02 | Schlumberger Holdings | Well cleaning apparatus |
WO2023183577A1 (en) * | 2022-03-25 | 2023-09-28 | Schlumberger Technology Corporation | Method and system for simultaneous wireline milling and debris collection |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5794703A (en) * | 1996-07-03 | 1998-08-18 | Ctes, L.C. | Wellbore tractor and method of moving an item through a wellbore |
US6189617B1 (en) * | 1997-11-24 | 2001-02-20 | Baker Hughes Incorporated | High volume sand trap and method |
US6273189B1 (en) * | 1999-02-05 | 2001-08-14 | Halliburton Energy Services, Inc. | Downhole tractor |
US6394183B1 (en) * | 2000-07-25 | 2002-05-28 | Schlumberger Technology Corporation | System and method for removing solid particulates from a pumped wellbore fluid |
-
2003
- 2003-10-09 NO NO20034519A patent/NO319232B1/en not_active IP Right Cessation
-
2004
- 2004-10-07 WO PCT/NO2004/000301 patent/WO2005033471A1/en active Application Filing
Also Published As
Publication number | Publication date |
---|---|
WO2005033471A1 (en) | 2005-04-14 |
NO20034519D0 (en) | 2003-10-09 |
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