A history of downhole scale inhibition by squeeze treatments on the Murchison platform
The formation water of the Murchison reservoir has a natural scaling potential. As pressure reduces from reservoir conditions carbonate scaling can occur. Also the water has a barium and strontium content so that when injected seawater broke through to the producing wells sulphate scaling also became possible. Initial scale inhibitor squeeze treatments achieved what scale itself to that date had not. They plugged the wells. Since then scale inhibitor squeezes have been successfully carried out and regularly achieve squeeze lives of up to a year. This paper outlines in historical form the philosophies and events of downhole scale inhibition for the Murchison wells. The initial difficulties and present successes are described. Details are also given of previous problem areas of downhole asphaltene deposition and present thoughts on squeeze treating different producing zones within the same wellbore.
- OSTI ID:
- 5923547
- Report Number(s):
- CONF-870993-
- Resource Relation:
- Conference: Offshore Europe '87: SPE of AIME conference, Aberdeen, UK, 8-11 Sep 1987; Other Information: Technical Paper SPE16539/1
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
42 ENGINEERING
ASPHALTENES
DEPOSITION
BOREHOLES
SCALE CONTROL
OFFSHORE PLATFORMS
BARIUM
CARBONATES
GEOLOGIC FORMATIONS
HISTORICAL ASPECTS
HYDROLOGY
SEAWATER
STRONTIUM
SULFATES
ALKALINE EARTH METALS
ASPHALTS
BITUMENS
CARBON COMPOUNDS
CAVITIES
CONTROL
ELEMENTS
HYDROGEN COMPOUNDS
METALS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
SULFUR COMPOUNDS
TAR
WATER
020200* - Petroleum- Reserves
Geology
& Exploration
423000 - Engineering- Marine Engineering- (1980-)