EP0735233A2 - Obturateur à manchon actionné hydrauliquement pour puits - Google Patents

Obturateur à manchon actionné hydrauliquement pour puits Download PDF

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Publication number
EP0735233A2
EP0735233A2 EP96104393A EP96104393A EP0735233A2 EP 0735233 A2 EP0735233 A2 EP 0735233A2 EP 96104393 A EP96104393 A EP 96104393A EP 96104393 A EP96104393 A EP 96104393A EP 0735233 A2 EP0735233 A2 EP 0735233A2
Authority
EP
European Patent Office
Prior art keywords
hydraulic
sliding sleeve
cylinder cavity
outer body
piston
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.)
Granted
Application number
EP96104393A
Other languages
German (de)
English (en)
Other versions
EP0735233B1 (fr
EP0735233A3 (fr
Inventor
Ferenc Kerekes
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.)
Neptune Energy Deutschland GmbH
Original Assignee
Preussag Energie GmbH
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 Preussag Energie GmbH filed Critical Preussag Energie GmbH
Publication of EP0735233A2 publication Critical patent/EP0735233A2/fr
Publication of EP0735233A3 publication Critical patent/EP0735233A3/fr
Application granted granted Critical
Publication of EP0735233B1 publication Critical patent/EP0735233B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • E21B34/00—Valve arrangements for boreholes or wells
    • E21B34/06—Valve arrangements for boreholes or wells in wells
    • E21B34/10—Valve arrangements for boreholes or wells in wells operated by control fluid supplied from outside the borehole

Definitions

  • the invention relates to a sliding sleeve for installation in a pipe tour of a bore according to the preamble of claim 1.
  • Sliding sleeves are part of the underground equipment of a probe equipped with packers. By actuating the sliding sleeve, hydraulic communication between the riser and the annulus of a hole is made possible or prevented. In normal bores equipped with packers, the function of a sliding sleeve is limited to circulating the dead pump fluid in and out when carrying out completion or overhaul work.
  • the individual beams are perforated one after the other in bores that have intersected several separate beams and then, if necessary, separated by packers. If two or more intersected carriers are not to be conveyed together in one probe, then a sliding sleeve is installed in the interval packed with two packers, which allows a temporary opening or closing of the packed carrier. The opening or closing as well as the changeover of the funding from one to another carrier takes place by actuating these built-in sliding sleeves. These sliding sleeves are operated using wireline devices.
  • the invention has for its object to design a sliding sleeve so that it can be operated or controlled in a simple manner and without Wirelincons.
  • the hydraulic sliding sleeve consists of an outer body with an integrated hydraulic unit and a movable hydraulic piston. Seals are arranged on the outer body, in particular on the hydraulic unit, the seals being attached in particular above and below the circulation openings and above and below the cylinder cavity. At the upper and lower ends of the cylinder cavity there are inlets or outlets for a hydraulic fluid supplied through the hydraulic connections. In addition, seals are attached to the hydraulic piston thickener, which divide the cylinder cavity into two mutually sealed chambers. Circulation openings are arranged in the outer body and in the hydraulic piston, respectively above and below the cylinder cavity.
  • Such a sliding sleeve can advantageously be hydraulically controlled or actuated via the liquid pressure.
  • the further advantages achieved with the invention consist in the simple and quick actuation of the hydraulic sliding sleeve, in particular by the operating personnel, for example by means of a hydraulic hand pump, and the reduction in the operating costs for the sliding sleeve actuation. It is also advantageous that no special tools are required for the actuation and the use of costly wireline service personnel is dispensed with, since no wireline devices are required anymore.
  • a further advantage is the use in probes, some of which also deliver eruptive, since in these cases it is possible to switch from pump to eruptive delivery and vice versa with installed, running pumps in a simple, cost-effective and time-saving manner.
  • the increased safety due to the actuation of the hydraulic sliding sleeve is also advantageous, since no lock and no wireline manipulation on the sod is required to carry out these measures. This results in increased operational safety and reduced environmental risk in the event of a gas or oil outbreak, for example.
  • the total area of the circulation openings of the sliding sleeves is at least 0.5 times, in particular 1.5 times the inner cross-sectional area of the riser pipe. This has the advantage that when circulating liquids, for example, through the circulation openings with the hydraulic sliding sleeve open, the maximum volume flow of the riser pipe can be circulated without restrictions.
  • the outer surface of the piston unit and the inner surface of the hydraulic cylinder unit are designed to be honed.
  • the advantage of fine machining and hardening of these surfaces is the avoidance or reduction of wear and tear and therefore lead to longer tool life.
  • the upper end profile of the piston unit is chamfered in the direction of the riser pipe, in particular at an angle of 30 ° to 60 °. Such a design can advantageously be used to connect or disconnect various wireline devices.
  • the inside diameter of the piston unit corresponds at least to the minimum inside diameter of the riser pipe above the sliding sleeve. It is thereby advantageously achieved that wreline devices or other units can get into the deeper areas of a bore below the sliding sleeve without restriction in diameter. A bottleneck through the sliding sleeve is avoided.
  • An anti-rotation slot is arranged on the piston unit and an anti-rotation nose is arranged on the outer body. This ensures that the circulation openings of the piston unit are exactly congruent with the circulation openings of the hydraulic cylinder unit when the sliding sleeve is fully open.
  • the hydraulic connections are each connected to hydraulic lines which are arranged parallel to the pipe tour and connected to the surface facilities of the boreholes.
  • the hydraulic sliding sleeve is connected to a hydraulically balanced hydraulic system. This advantageously ensures that the static pressures above us are balanced below the piston and relatively low actuation pressures have to be applied.
  • the hydraulic fluid consists in particular of oil or glycol or water or of mixtures of these fluids.
  • the use of different hydraulic fluids has the advantage that a fluid can be selected and used according to the individual borehole requirements.
  • the hydraulic sliding sleeve in Figure 1 consists of an outer body 1, which is formed in the middle part as a hydraulic cylinder unit 2 with several sealing packages 3.
  • the seals 3 are located above the cylinder cavity 14 and above and below the circulation opening 10 in the outer body of the sliding sleeve 1.
  • the hydraulic cylinder unit 2 is provided with two connections 7, 8 for the two hydraulic lines.
  • the hydraulic piston 6 installed in the hydraulic cylinder unit 2 is provided with seals 4, in particular in the region of the piston thickening 15, which seal the hydraulic piston unit 6 to the outer body 1 seal.
  • the piston thickening 15 divides the cylinder cavity 14 into two mutually sealed chambers.
  • scraper rings 18 are arranged in the outer body 1 in this exemplary embodiment and are intended to strip off the existing liquid film on the hydraulic piston unit 6 when the sliding sleeve is actuated.
  • the threads 11 are necessary for the assembly of the hydraulic sliding sleeve and have an internal pressure resistance that is at least the internal pressure resistance of the riser pipe.
  • the hydraulic piston unit 6 contains circulation openings 5, the shape and size of which correspond to the circulation openings 10 of the outer body of the sliding sleeve 1.
  • the lower stop 19 represents the limitation of the stroke of the piston unit 6 downwards and in this example ensures that the lower connection for the hydraulic line 8 is not closed by the piston thickening 15.
  • Figure 2 shows a hydraulic sliding sleeve in the open state.
  • the stop 23 represents the limitation of the stroke of the hydraulic piston unit 6.
  • the circulation opening 5 of the piston unit 6 covers the circulation opening 10 of the outer body of the sliding sleeve 1.
  • the circulation between the outside and interior of the sliding sleeve is established.
  • the lower chamber of the cylinder cavity 14 has reached its maximum volume.
  • the leadership of the Piston unit 6 is brought about by a lug 16 in the outer body of sliding sleeve 1, which engages in a slot 17 in hydraulic piston unit 6. This prevents the hydraulic piston unit 6 from rotating.
  • the closing of the sliding sleeve is effected by pressurizing the hydraulic fluid line 20 and pressing down the piston unit 6 while simultaneously draining fluid from the lower chamber via the lower connection 8 and the hydraulic line to the surface.
  • FIG. 3 shows an example of the circulation openings 10 milled in the hydraulic cylinder unit 2.
  • the installation of a hydraulic sliding sleeve 29 in a riser pipe string 27 is shown in the borehole sketch in FIG.
  • the sliding sleeve is actuated from the surface via the hydraulic fluid lines 20, 28.
  • the riser pipe string 27 is installed in the annular space 26 of the casing 25.
  • the cement jacket 24 creates the connection between the casing 25 and the rock. With the packer 30, the lower part of the borehole with the perforation 31 of the casing 25 and the cement jacket 24 is sealed off from the rest of the annular space 26.
  • the hydraulic cylinder unit 2 is arranged below the circulation openings 10.

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)
  • Multiple-Way Valves (AREA)
  • Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
EP96104393A 1995-03-30 1996-03-20 Obturateur à manchon actionné hydrauliquement pour puits Expired - Lifetime EP0735233B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19511722A DE19511722C2 (de) 1995-03-30 1995-03-30 Schiebemuffe
DE19511722 1995-03-30

Publications (3)

Publication Number Publication Date
EP0735233A2 true EP0735233A2 (fr) 1996-10-02
EP0735233A3 EP0735233A3 (fr) 2000-06-28
EP0735233B1 EP0735233B1 (fr) 2003-02-19

Family

ID=7758189

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96104393A Expired - Lifetime EP0735233B1 (fr) 1995-03-30 1996-03-20 Obturateur à manchon actionné hydrauliquement pour puits

Country Status (3)

Country Link
EP (1) EP0735233B1 (fr)
DE (2) DE19511722C2 (fr)
DK (1) DK0735233T3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102797435A (zh) * 2012-08-20 2012-11-28 中国海洋石油总公司 一种地面液压控制注水井安全阀

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0970388B1 (fr) * 1997-03-25 2001-11-21 Siemens Aktiengesellschaft Procede d'evaluation de la direction
DE102006038858A1 (de) 2006-08-20 2008-02-21 Voxeljet Technology Gmbh Selbstaushärtendes Material und Verfahren zum schichtweisen Aufbau von Modellen

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4434854A (en) * 1980-07-07 1984-03-06 Geo Vann, Inc. Pressure actuated vent assembly for slanted wellbores
US4403659A (en) * 1981-04-13 1983-09-13 Schlumberger Technology Corporation Pressure controlled reversing valve
US4429747A (en) * 1981-09-01 1984-02-07 Otis Engineering Corporation Well tool
DE3641103A1 (de) * 1986-12-02 1988-06-16 Edeco Gmbh Totpump-ventil fuer eine foerdersonde
US4842074A (en) * 1987-10-15 1989-06-27 Otis Engineering Corporation Gas storage well safety system and method
US4915175A (en) * 1989-02-21 1990-04-10 Otis Engineering Corporation Well flow device
NO903764L (no) * 1989-08-31 1991-03-01 British Petroleum Co Plc Ringrom-sikkerhetsventil.
US5048611A (en) * 1990-06-04 1991-09-17 Lindsey Completion Systems, Inc. Pressure operated circulation valve

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102797435A (zh) * 2012-08-20 2012-11-28 中国海洋石油总公司 一种地面液压控制注水井安全阀

Also Published As

Publication number Publication date
DK0735233T3 (da) 2003-05-05
EP0735233B1 (fr) 2003-02-19
DE19511722A1 (de) 1996-10-02
EP0735233A3 (fr) 2000-06-28
DE59610142D1 (de) 2003-03-27
DE19511722C2 (de) 1997-04-17

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