[go: up one dir, main page]

WO1991018182A1 - Systemes de production pour puits sous-marins - Google Patents

Systemes de production pour puits sous-marins

Info

Publication number
WO1991018182A1
WO1991018182A1 PCT/GB1991/000747 GB9100747W WO9118182A1 WO 1991018182 A1 WO1991018182 A1 WO 1991018182A1 GB 9100747 W GB9100747 W GB 9100747W WO 9118182 A1 WO9118182 A1 WO 9118182A1
Authority
WO
WIPO (PCT)
Prior art keywords
caisson
christmas tree
umbilical
manifold
production system
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.)
Ceased
Application number
PCT/GB1991/000747
Other languages
English (en)
Inventor
Philip Gwyn Brown
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JP Kenny Caledonia Ltd
Original Assignee
JP Kenny Caledonia Ltd
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 JP Kenny Caledonia Ltd filed Critical JP Kenny Caledonia Ltd
Publication of WO1991018182A1 publication Critical patent/WO1991018182A1/fr
Priority to NO92924344A priority Critical patent/NO924344L/no
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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
    • E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/01—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells specially adapted for obtaining from underwater installations
    • E21B43/017—Production satellite stations, i.e. underwater installations comprising a plurality of satellite well heads connected to a central station
    • E21B43/0175—Hydraulic schemes for production manifolds
    • 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
    • E21B41/08—Underwater guide bases, e.g. drilling templates; Levelling thereof

Definitions

  • This invention relates to production systems for underwater wells/ particularly (but not exclusively) oil or gas wells.
  • a production system for extracting material from an underwater deposit using a caisson characterised in that there are a plurality of Christmas tree assemblies which can be accommodated simultaneously in the caisson, a drilling template for use within the caisson, firstly in the drilling of wells and subsequently for supporting the Christmas tree assemblies, manifold means for connecting each Christmas tree assembly to at least one flowline, which serves all of the Christmas tree assemblies, and distribution means for connecting each Christmas tree to a power and control umbilical which serves all of the Christmas tree assemblies.
  • the manifold means preferably comprise connections to a production flowline and a test flowline; and the distribution means preferably comprise connections to electrical and hydraulic lines in the umbilical.
  • the umbilical will normally include chemical injection hoses for the transmission of chemicals (for example methanol), in which case the drilling template will also support a chemical injection manifold for distributing the chemicals to the Christmas tree assemblies.
  • chemicals for example methanol
  • the manifold means, distribution means and chemical injection manifold are preferably modularised units which may be fitted to the template before or after it is located within the caisson. Each unit preferably has its own lock-down system to facilitate its installation or removal.
  • the Christmas tree assemblies are preferably four in number. Whatever the number, preferably they are distributed around a vertical axis of the caisson, on which axis the manifold means lies.
  • the caisson may have a lid which is preferably slightly domed, so as to minimise scouring effect to optimise hydrodynamic loading, and preferably has a removable cover above each Christmas tree and the manifold means to allow access by a diver.
  • Figures 1 and 1A are perspective views of a subsea oaisson production system according to the invention.
  • Figure IB being an exploded, cutaway and enlarged view of the caisson assembly;
  • Figure 2 is a vertical section through the installed caisson;
  • Figure 3 is a vertical section through the caisson showing its construction in more detail;
  • Figure 4 is a plan corresponding to Fig. 3 of the caisson
  • Figure 5 is a plan of the caisson lid
  • Figure 6 is a plan of a drilling template
  • Figure 7 is an exploded side elevation of the components housed in the caisson
  • Figure 8 is an exploded plan view, partly in section, of the caisson components
  • Figure 9 is an elevation of a Christmas tree installed in the caisson
  • Figure 10 is a plan of manifold piping, and Figs. 10A and 10B are corresponding elevations;
  • Figure 11 is a diagram showing the general arrangement of the production and control systems.
  • Figure 12 is a plan of the caisson with lid removed showing the caisson control system in more detail, Figure 12A being a detail of an umbilical distribution unit and adjacent caisson wall.
  • a subsea caisson production system comprises a caisson 10 supported in an oversized sloping-sided excavation in the seabed 12 on a stabilised pre-engineered concrete foundation layer 14 through which project four conductors 16, and a central conductor 17 (see Fig. IB) these being surrounded by a protective rock dump 18.
  • the caisson has a floor formed by a drilling template 22 on which are mounted four Christmas tree assemblies distributed around a central vertical axis (not shown) of the caisson and a central manifold module 26 which lies on the axis and from which a production flowline 28 and a test flowline 30 run to an on-shore plant 32 via a shore crossing 34 or to a platform.
  • An umbilical 36 which comprises electric, hydraulic and chemical lines also runs to the plant 32 in an excavated trench. Pig receivers 31, a splitter box 33 and tie-in spools 35 are also shown.
  • the foundation layer 14 is laid on a fine rock dump 40 at the bottom of the excavation 11.
  • the excavated area surrounding the sides of the caisson 10 is filled with selected fine rock dump material 42 covered by a top layer of coarse material 44 which provides a stabilised gently sloping surround extending from the top of the caisson 10 to the existing seabed 12 some 2m above.
  • the caisson 10 has a 12-sided wall 46 comprising twelve double skin wall sections 48 formed of welded plates 50 and interconnected by vertical tubular members 52; the sections 48 may be flooded with sea water or • -filled with other material when the caisson 10 has been lowered into position. If desired the caisson 10 may be supplied with levelling mechanisms (not shown).
  • a horizontal internal ring 54 is positioned near the lower edge of the caisson wall 46 to support the drilling template 22 and is fitted with a series of drilling template installation guides 56 and drilling template lockdown brackets 58.
  • the wall 46 is capped by a box-section top chord 60 surmounted by a bumper frame 62 which is interrupted for a set of four lifting eyes 64, and of flowline clamp support inserts 66.
  • the caisson 10 is fitted with a removable lid 20 (Fig. 5) which comprises a tubular framework 68 covered by a serrated bar grating 70, and having five removable hatches 72 to provide access to the Christmas tree assemblies 24 and manifold module 26.
  • a removable lid 20 FIG. 5
  • FIG. 5 The caisson 10 is fitted with a removable lid 20 (Fig. 5) which comprises a tubular framework 68 covered by a serrated bar grating 70, and having five removable hatches 72 to provide access to the Christmas tree assemblies 24 and manifold module 26.
  • Four lifting eyes 74 for connection to a sling 76 (Fig. 7) are also provided.
  • the drilling template 22 (see Fig. 6) comprises a tubular framework 78 including two intersecting parallel pairs of tubular members 80, each terminating in a buffer 82 which on lowering of the template 22 engages the respective guides 56 and is then secured by lock down brackets 58 when it has been levelled (to within 5 cm), which may be accomplished independently of the caisson 10 which is also alignable.
  • Four frusto-conical, gimball-type guide funnels 84 are peripherally disposed and provide a facility to land drilling guide bases 86 (Fig. 7) which, after the drilling of four wells, support the Christmas tree assemblies 24.
  • a similar guide funnel 84 is provided centrally to receive a similar guide base 86 for the manifold 26.
  • FIG. 9 shows one of the Christmas tree assemblies 24 located in the drilling template 22 by means of the drilling guide base 86 having upstanding guide posts 98 over which guide funnels 100 of a guide frame 102 engage.
  • a tree cap 104 fits over the top of the frame 102 (see Figs. 7 and 8).
  • the Christmas tree itself (106) has a minimum of four fail-safe barriers, which are all arranged to be automatically shut in the case of alarm or emergency, and leak detection, system monitoring and data acquisition facilities; and, as its construction is generally conventional, it will not be described in detail. Exploded views of the Christmas tree assembly 24 and a tubing hanger 108 are shown in Figs. 7 and 8.
  • the manifold module 26 Centrally disposed on the template 22 is the manifold module 26 shown in detail in Fig. 10, and generally in the exploded diagrams of Figs. 7 and 8.
  • the manifold module 26 is mounted on the central guide base 86 by means of a framework 110, including four guide funnels 112, and is surmounted by a protective cap 114.
  • the functional components of the module include a pair of tree tie-in spools 116 for each well which are all connected to a production flowline 120 and a test flowline 118 which communicate with the flowlines 28 and 30, respectively; a pigging loop 122; and valve actuators 124.
  • the manifold module also includes piping headers which allow a chemical treatment facility such as ethanol dosing to inhibit 'hydrate formation, pour-point depressant to prevent wax formation, corrosion inhibitor dosing and intermittent scale inhibitor.
  • the chemicals are fed along the umbilical 36 to the umbilical distribution unit 92 and reach a chemical injection manifold 125 on the central manifold module 26 via a chemical injection jumper 126 (Fig. 11). From the manifold 125 the chemicals pass to the Christmas tree assemblies 24.
  • the umbilical distribution unit 92 is located on a desired one of the umbilical distribution socket inserts 90, being mounted on two guide posts 127 which are engaged by guide funnels 128 flanking the unit 92.
  • the unit 92 is connected to the umbilical 36 by a jumper 130, the connection being made through a pullhead 132 received within a pulling cone 134 mounted on an insert 90.
  • Hydraulic and electric jumpers 136 lead to a control pod 138 located by each Christmas tree assembly 24 to provide power and control therefor; and further jumpers 140 lead from each pod 138 to the central manifold module 26 to supply the valve actuators 124.
  • test flowline 118 and the production flowline 120 are connected by the pigging loop 122 so that "round trip" commissioning may be undertaken by passing the appropriate pi train through the lines.
  • the manifold module 26 allows the flow of production hydrocarbons to either the production flowline 120 or, on an individual basis, to the test flowline 118 for well-testing purposes. In normal operation, the oil or gas from two wells passes down the production flowline 120 and that from the other two wells passes down the test flowline 118.
  • the two unused umbilical distribution socket inserts 90 may be used for further umbilicals and/or flowlines, for example if it is subsequently desirable to use 9 as lift or water injection techniques.

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)
  • Earth Drilling (AREA)

Abstract

Des tuyaux adducteurs (28 et 30) transportent du pétrole ou du gaz d'un caisson (10), partiellement ou totalement encastré dans le fond de la mer (12), vers une station terrestre (32), et une conduite (36) relie également le caisson et la station terrestre. Les tuyaux (28 et 30) et la conduite alimentent plusieurs ensembles en arbre de Noël (24) situés dans le caisson; ces ensembles sont placés autour d'un axe vertical du caisson et portés par un gabarit de forage (22) qui a été utilisé pour le forage d'un nombre de puits correspondant. Un collecteur (26) reposant sur l'axe relie tous les arbres de Noël aux tuyaux (28 et 30).
PCT/GB1991/000747 1990-05-11 1991-05-10 Systemes de production pour puits sous-marins Ceased WO1991018182A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
NO92924344A NO924344L (no) 1990-05-11 1992-11-11 Produksjonssystem for undervannsbroenner

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB909010627A GB9010627D0 (en) 1990-05-11 1990-05-11 Protection systems for underwater wells
GB9010627.9 1990-05-11

Publications (1)

Publication Number Publication Date
WO1991018182A1 true WO1991018182A1 (fr) 1991-11-28

Family

ID=10675851

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1991/000747 Ceased WO1991018182A1 (fr) 1990-05-11 1991-05-10 Systemes de production pour puits sous-marins

Country Status (5)

Country Link
EP (1) EP0527858A1 (fr)
AU (1) AU7863191A (fr)
CA (1) CA2082652A1 (fr)
GB (1) GB9010627D0 (fr)
WO (1) WO1991018182A1 (fr)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995015428A1 (fr) * 1993-12-03 1995-06-08 Kvaerner Energy A.S Procede d'exploitation d'un gisement d'hydrocarbures au large des cotes et installation sous-marine utilisable dans la prospection d'un gisement d'hydrocarbures au large des cotes
WO2002063106A1 (fr) * 2001-02-05 2002-08-15 Fmc Kongsberg Subsea As Procede d'installation de puits de petrole et de gaz immerges et appareil afferent
WO2007028982A1 (fr) * 2005-09-07 2007-03-15 Keron Engineering Ltd Ensemble cadre sous-marin d’extrémité de conduite de transport & de guide de forage
CN102482931A (zh) * 2009-09-25 2012-05-30 阿克海底公司 生产管汇配件
US9574146B2 (en) 2012-12-18 2017-02-21 Basf Se Polymeric compositions composed of ethylene-vinyl ester copolymers alkyl (meth)acrylates, processes for production thereof and use thereof as pour point depressants for crude oils, mineral oils or mineral oil products
CN110439495A (zh) * 2019-08-21 2019-11-12 中海油能源发展股份有限公司 一种水下生产系统防护装置
CN113404050A (zh) * 2021-05-27 2021-09-17 中海石油(中国)有限公司 一种一体化钢圆筒水下防护系统的安装方法
CN113898324A (zh) * 2021-09-30 2022-01-07 中海石油(中国)有限公司 一种位于海床泥面下的水下生产的防护系统及方法
US11555382B2 (en) * 2016-09-02 2023-01-17 Fmc Technologies, Inc. Subsea field architecture

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3247672A (en) * 1962-08-29 1966-04-26 Vincent C Johnson Underwater well head encasement structure
US3601189A (en) * 1969-02-10 1971-08-24 Lockheed Aircraft Corp Underwater multiple well installation
AU445122B2 (en) * 1970-12-31 1974-01-25 Mobil Oil Corporation Subsea production satellite and system comprising it
GB2133060A (en) * 1982-09-14 1984-07-18 Canocean Resources Ltd Subsea caisson

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3247672A (en) * 1962-08-29 1966-04-26 Vincent C Johnson Underwater well head encasement structure
US3601189A (en) * 1969-02-10 1971-08-24 Lockheed Aircraft Corp Underwater multiple well installation
AU445122B2 (en) * 1970-12-31 1974-01-25 Mobil Oil Corporation Subsea production satellite and system comprising it
GB2133060A (en) * 1982-09-14 1984-07-18 Canocean Resources Ltd Subsea caisson

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995015428A1 (fr) * 1993-12-03 1995-06-08 Kvaerner Energy A.S Procede d'exploitation d'un gisement d'hydrocarbures au large des cotes et installation sous-marine utilisable dans la prospection d'un gisement d'hydrocarbures au large des cotes
WO2002063106A1 (fr) * 2001-02-05 2002-08-15 Fmc Kongsberg Subsea As Procede d'installation de puits de petrole et de gaz immerges et appareil afferent
WO2007028982A1 (fr) * 2005-09-07 2007-03-15 Keron Engineering Ltd Ensemble cadre sous-marin d’extrémité de conduite de transport & de guide de forage
CN102482931A (zh) * 2009-09-25 2012-05-30 阿克海底公司 生产管汇配件
US9574146B2 (en) 2012-12-18 2017-02-21 Basf Se Polymeric compositions composed of ethylene-vinyl ester copolymers alkyl (meth)acrylates, processes for production thereof and use thereof as pour point depressants for crude oils, mineral oils or mineral oil products
US10072115B2 (en) 2012-12-18 2018-09-11 Basf Se Polymeric compositions as pour point depressants for crude oils
US10287384B2 (en) 2012-12-18 2019-05-14 Basf Se Polymeric compositions as pour point depressants for crude oils
US11555382B2 (en) * 2016-09-02 2023-01-17 Fmc Technologies, Inc. Subsea field architecture
CN110439495A (zh) * 2019-08-21 2019-11-12 中海油能源发展股份有限公司 一种水下生产系统防护装置
CN113404050A (zh) * 2021-05-27 2021-09-17 中海石油(中国)有限公司 一种一体化钢圆筒水下防护系统的安装方法
CN113898324A (zh) * 2021-09-30 2022-01-07 中海石油(中国)有限公司 一种位于海床泥面下的水下生产的防护系统及方法
CN113898324B (zh) * 2021-09-30 2023-11-14 中海石油(中国)有限公司 一种位于海床泥面下的水下生产的防护系统及方法

Also Published As

Publication number Publication date
AU7863191A (en) 1991-12-10
CA2082652A1 (fr) 1991-11-12
GB9010627D0 (en) 1990-07-04
EP0527858A1 (fr) 1993-02-24

Similar Documents

Publication Publication Date Title
US5025865A (en) Subsea oil production system
CA1291945C (fr) Systeme modulaire de completion voisin de la surface
EP0480772B1 (fr) Système de production sousmarin
EP0480773B1 (fr) Système de production sous-marin et procédé pour connexion de conduites entre un manifold et des puits satellites voisins
US3777812A (en) Subsea production system
CA1333280C (fr) Systeme de puits de petrole sous-marin
US4666340A (en) Offshore platform with removable modules
NO151866B (no) Undervannsanlegg
WO1991018182A1 (fr) Systemes de production pour puits sous-marins
EP3551806B1 (fr) Plateforme sans pilote ou à distance
NO309620B1 (no) Undervanns bunnrammeanordning for boring og klargjöring av en brönn, og fremgangsmåte ved anbringelse av en undervannsanordning for boring og klargjöring av en brönn i sjöbunnen
US6059039A (en) Extendable semi-clustered subsea development system
US4442900A (en) Subsea well completion system
EP0438455A1 (fr) Dispositif pour proteger des composants dans des systemes sous-marins.
US4090560A (en) Junction housing for use in undersea oil wells
US3946805A (en) Underwater connections at well head locations
US6926467B1 (en) Method and device for replacing equipment on the seabed
GB2114188A (en) Subsea well completion system, a base template for the system and a method of establishing production capability from multiple subsea wellheads
WO1998016715A1 (fr) Unite de production de gaz ou de petrole marin
GB1594284A (en) Control of sub-sea equipment
Smith et al. Overview of the Highlander field development
GB2318141A (en) Off-shore oil or gas production unit
Koch et al. Snorre Subsea Production System Technological Challenges and Achievements
NO179844B (no) Anordning ved ventiltre

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AU CA NO SU US

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FR GB GR IT LU NL SE

WWE Wipo information: entry into national phase

Ref document number: 2082652

Country of ref document: CA

WWE Wipo information: entry into national phase

Ref document number: 1991909159

Country of ref document: EP

WWP Wipo information: published in national office

Ref document number: 1991909159

Country of ref document: EP

WWW Wipo information: withdrawn in national office

Ref document number: 1991909159

Country of ref document: EP