Down hole safety valve for concentric completion

Conference · Thu Jan 01 00:00:00 EST 1987

OSTI ID:6666747

Geyelin, J L

Gas lift is a widespread method of artificial lift. However, on wells where there is no provision for Side Pocket Mandrels one way to avoid a heavy work over, is to run a macaroni string inside the existing tubing; gas can be injected via the macaroni and the lifted fluid flowed through the tubing-macaroni annulus. On offshore wells, regulations or Company policy may impose the use of Surface Controlled Subsurface Safety Valve. This paper describes a new type of SC-SSV, run as an integral part of the macaroni string, which will close the macaroni string and the tubing-macaroni annulus. Associated equipment to set the SC-SSV in place and to seal the macaroni string system in the Christmas-tree is also covered in the paper. In addition, field experience on over 30 offshore wells equipped with such a system is related.

• OSTI ID: 6666747
• Report Number(s): CONF-870993-
• Resource Relation: Conference: Offshore Europe '87: SPE of AIME conference, Aberdeen, UK, 8 Sep 1987; Other Information: Technical Paper SPE 16536/1
• Country of Publication: United States
• Language: English

Related Subjects

03 NATURAL GAS
42 ENGINEERING
NATURAL GAS WELLS
OFFSHORE OPERATIONS
TECHNOLOGY ASSESSMENT
SUBSURFACE STRUCTURES
SAFETY
BOREHOLES
DESIGN
FIELD TESTS
REGULATIONS
TUBES
VALVES
CAVITIES
CONTROL EQUIPMENT
EQUIPMENT
FLOW REGULATORS
TESTING
WELLS
030200* - Natural Gas- Reserves
Geology
& Exploration
032000 - Natural Gas- Transport
Handling
& Storage
420206 - Engineering- Mining & Drilling Equipment & Facilities- (1980-1989)
423000 - Engineering- Marine Engineering- (1980-)