GB1420011A - Method and apparatus for separating material leaving a well - Google Patents

Method and apparatus for separating material leaving a well

Info

Publication number
GB1420011A
GB1420011A GB121873A GB121873A GB1420011A GB 1420011 A GB1420011 A GB 1420011A GB 121873 A GB121873 A GB 121873A GB 121873 A GB121873 A GB 121873A GB 1420011 A GB1420011 A GB 1420011A
Authority
GB
United Kingdom
Prior art keywords
column
oil
water
valve
level
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
GB121873A
Original Assignee
Favret U
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 Favret U filed Critical Favret U
Priority to GB121873A priority Critical patent/GB1420011A/en
Publication of GB1420011A publication Critical patent/GB1420011A/en
Expired legal-status Critical Current

Links

Classifications

    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B43/00Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/34Arrangements for separating materials produced by the well
    • E21B43/36Underwater separating arrangements
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D17/00Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
    • B01D17/02Separation of non-miscible liquids
    • B01D17/0208Separation of non-miscible liquids by sedimentation
    • B01D17/0211Separation of non-miscible liquids by sedimentation with baffles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D17/00Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
    • B01D17/02Separation of non-miscible liquids
    • B01D17/0208Separation of non-miscible liquids by sedimentation
    • B01D17/0214Separation of non-miscible liquids by sedimentation with removal of one of the phases

Abstract

1420011 Separating oil from water U FAVRET JNP 9 Jan 1973 1218/73 Heading B1D Water contaminated with oil, produced at an offshore oil well, is purified by passage down a zig-zag path defined by inclined baffles 18 in a partially submerged column 12, the underside of each baffle defining an oil-collecting zone 34, prior to being discharged from the bottom of the column into the surrounding sea, flow being intermittently stopped or at least reduced to allow coalesced oil globules to rise into zones 34. In Figs. 1, 2 water enters the top of the column by inlets 24, 24a continuously, and valve 41 controls the discharge from the bottom. Half the column extends above the sea level 30, and baffles 18 are spaced along its whole height. A system of risers 52 allows oil to rise from each zone 34 to the corresponding zone of the similarly inclined baffle above. Rises from the upper two zones communicate via duct 56 with oil collection vessel 38. Valve 41 is pneumatically operated and controlled by means 42 which closes the valve when the liquid level in the column falls to 70 and opens it when the level rises to 68. The intervening space accommodates the liquid inflow during settling periods. The quick-shutting action of the valve produces a hydraulic shock in column 12 which assists separation of oil globules. Vessel 38 is intermittently emptied by a pneumatically actuated and controlled pump 39 in response to the oil level varying between 64 and 66. Main inlet 24 delivers water from a first settling tank which handles the well output. Secondary inlet 24a delivers contaminated rain water etc, via a filter 80. The column 12 is supported on the sea bed at 16 and/or by clamps 17 from the main well structure. Discharge water may be sampled by pipe 104. Fig. 5 (not shown) illustrates the shape and mounting of a baffle 18. Baffles are inclined at 25-65 degrees and spaced apart (b in Fig. 4B) by ¢ inch to 10 feet. Figs. 4A, B (not shown) illustrates how column 12 is built up of sections. Fig. 4B also illustrates how zones 34 may be divided by upright plates 97b. Fig. 7 (not shown) illustrates an alternative discharge valve 41 in a protecting housing. In Figs. 8-10 (not shown), which is for use in deeper water than the Fig. 1 model, most of the column is submerged, the bottom of the column is open to the sea and pipes (154, 156) deliver the water to a location where the baffles 18 begin below the sea level. Intermittent flow is achieved by a valve upstream of the column and downstream of a buffer-tank (165). The upper end of the column acts as an oil-storage zone and encloses an oil-discharge pump (157) which is switched on and off as the oil-water interface falls below (164) and rises above (162). Air-lift devices (Figs. 9, 10) enable discharge water to be sampled from the bottom of the column. A device (168) stops well production if the level in column 12 rises too far.
GB121873A 1973-01-09 1973-01-09 Method and apparatus for separating material leaving a well Expired GB1420011A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB121873A GB1420011A (en) 1973-01-09 1973-01-09 Method and apparatus for separating material leaving a well

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB121873A GB1420011A (en) 1973-01-09 1973-01-09 Method and apparatus for separating material leaving a well

Publications (1)

Publication Number Publication Date
GB1420011A true GB1420011A (en) 1976-01-07

Family

ID=9718191

Family Applications (1)

Application Number Title Priority Date Filing Date
GB121873A Expired GB1420011A (en) 1973-01-09 1973-01-09 Method and apparatus for separating material leaving a well

Country Status (1)

Country Link
GB (1) GB1420011A (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0001866A1 (en) * 1977-10-31 1979-05-16 Ballast-Nedam Groep N.V. Device for gravity separating suspended substances from a liquid
US4410425A (en) * 1981-06-04 1983-10-18 Gardes Robert A Flow line filter apparatus
GB2124100A (en) * 1982-07-23 1984-02-15 Exxon Production Research Co Liquid-liquid separation apparatus
FR2628142A1 (en) * 1988-03-02 1989-09-08 Elf Aquitaine DEVICE FOR SEPARATING GAS OIL ON THE HEAD OF A SUBMARINE WELL
EP0826405A1 (en) * 1996-08-30 1998-03-04 Lucas Industries Public Limited Company Sedimenter
WO2003033869A1 (en) * 2001-10-12 2003-04-24 Alpha Thames Ltd A method and system for handling producing fluid
CN102091439A (en) * 2010-12-27 2011-06-15 重庆工商大学 Emulsified oil water hammer harmonic wave demulsification principle and device
CN109403944A (en) * 2018-12-06 2019-03-01 青岛海洋地质研究所 A kind of hydrate mortar thickening separator and separation method
CN110725362A (en) * 2019-10-23 2020-01-24 南京科森挤出装备有限公司 Method for refilling rainwater and storing water by filling sand into waste motor-pumped well

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0001866A1 (en) * 1977-10-31 1979-05-16 Ballast-Nedam Groep N.V. Device for gravity separating suspended substances from a liquid
US4410425A (en) * 1981-06-04 1983-10-18 Gardes Robert A Flow line filter apparatus
GB2124100A (en) * 1982-07-23 1984-02-15 Exxon Production Research Co Liquid-liquid separation apparatus
FR2628142A1 (en) * 1988-03-02 1989-09-08 Elf Aquitaine DEVICE FOR SEPARATING GAS OIL ON THE HEAD OF A SUBMARINE WELL
US4982794A (en) * 1988-03-02 1991-01-08 Societe Nationale Elf Aquitaine (Production) Apparatus for oil/gas separation at an underwater well-head
EP0826405A1 (en) * 1996-08-30 1998-03-04 Lucas Industries Public Limited Company Sedimenter
US5900149A (en) * 1996-08-30 1999-05-04 Lucas Industries Public Limited Company Sedimenter
WO2003033869A1 (en) * 2001-10-12 2003-04-24 Alpha Thames Ltd A method and system for handling producing fluid
CN102091439A (en) * 2010-12-27 2011-06-15 重庆工商大学 Emulsified oil water hammer harmonic wave demulsification principle and device
CN102091439B (en) * 2010-12-27 2013-03-20 重庆工商大学 Emulsified oil water hammer harmonic wave demulsification device
CN109403944A (en) * 2018-12-06 2019-03-01 青岛海洋地质研究所 A kind of hydrate mortar thickening separator and separation method
CN110725362A (en) * 2019-10-23 2020-01-24 南京科森挤出装备有限公司 Method for refilling rainwater and storing water by filling sand into waste motor-pumped well

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee