FR2253139A1 - Drilling vessel wave motion compensator - with pneumatically pressurized rams between travelling block and drill string supports - Google Patents

Drilling vessel wave motion compensator - with pneumatically pressurized rams between travelling block and drill string supports

Info

Publication number
FR2253139A1
FR2253139A1 FR7342866A FR7342866A FR2253139A1 FR 2253139 A1 FR2253139 A1 FR 2253139A1 FR 7342866 A FR7342866 A FR 7342866A FR 7342866 A FR7342866 A FR 7342866A FR 2253139 A1 FR2253139 A1 FR 2253139A1
Authority
FR
France
Prior art keywords
drill string
rams
travelling block
drilling vessel
motion compensator
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
FR7342866A
Other languages
French (fr)
Other versions
FR2253139B1 (en
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.)
Rucker Co
Original Assignee
Rucker Co
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 Rucker Co filed Critical Rucker Co
Priority to FR7342866A priority Critical patent/FR2253139A1/en
Publication of FR2253139A1 publication Critical patent/FR2253139A1/en
Application granted granted Critical
Publication of FR2253139B1 publication Critical patent/FR2253139B1/fr
Granted legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
    • E21B19/08—Apparatus for feeding the rods or cables; Apparatus for increasing or decreasing the pressure on the drilling tool; Apparatus for counterbalancing the weight of the rods
    • E21B19/09—Apparatus for feeding the rods or cables; Apparatus for increasing or decreasing the pressure on the drilling tool; Apparatus for counterbalancing the weight of the rods specially adapted for drilling underwater formations from a floating support using heave compensators supporting the drill string

Abstract

To compensate for the rise and fall of a drilling vessel, the drill string support is carried by at least one chain which extends from the support over a pulley carried by one of two relatively moveable members defining a pneumatically pressurised chamber, the other member being connected to a frame carried by the travelling block, the other end of the chain also being connected to one frame. The pressure in the chamber is adjustable to a desized level which will remain virtually constant during movement of the vessel.
FR7342866A 1973-11-30 1973-11-30 Drilling vessel wave motion compensator - with pneumatically pressurized rams between travelling block and drill string supports Granted FR2253139A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7342866A FR2253139A1 (en) 1973-11-30 1973-11-30 Drilling vessel wave motion compensator - with pneumatically pressurized rams between travelling block and drill string supports

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7342866A FR2253139A1 (en) 1973-11-30 1973-11-30 Drilling vessel wave motion compensator - with pneumatically pressurized rams between travelling block and drill string supports

Publications (2)

Publication Number Publication Date
FR2253139A1 true FR2253139A1 (en) 1975-06-27
FR2253139B1 FR2253139B1 (en) 1978-02-10

Family

ID=9128566

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7342866A Granted FR2253139A1 (en) 1973-11-30 1973-11-30 Drilling vessel wave motion compensator - with pneumatically pressurized rams between travelling block and drill string supports

Country Status (1)

Country Link
FR (1) FR2253139A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2378709A1 (en) * 1977-01-28 1978-08-25 Strommen Staal As ACTIVE COMPENSATION SYSTEM FOR RELATIVE UNDESIRABLE MOVEMENTS, PREFERRED WHILE MOVING A LOAD (CARGO)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2378709A1 (en) * 1977-01-28 1978-08-25 Strommen Staal As ACTIVE COMPENSATION SYSTEM FOR RELATIVE UNDESIRABLE MOVEMENTS, PREFERRED WHILE MOVING A LOAD (CARGO)

Also Published As

Publication number Publication date
FR2253139B1 (en) 1978-02-10

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Legal Events

Date Code Title Description
TP Transmission of property
ST Notification of lapse