A proven squeeze cementing technique in a dolomite reservoir

Conference · Thu May 01 04:00:00 EDT 1969 · Soc. Pet. Eng. AIME, Pap.; (United States)

OSTI ID:5088557

Goolsby, J L

Early in the installation of secondary recovery in a Grayburg-San Andres reservoir of W. Texas, it became apparent through injectivity profiles that many of the primary cement jobs on the injection wells needed repair. Because of reservoir characteristics, such as thick pay with low porosity and permeability, as well as vertical fracturing and the desire to prevent premature dehydration of the slurry at the perforations, it was necessary to design a unique cementing system and technique. The cement slurry consists of an accelerated first stage (approximately 1/6 of the total volume of cement) and a second stage which contains a small percentage of additive to control fluid loss and sand to function as a bridging agent. To date 46 water injection wells have been squeezed with an 82% success ratio. Injectivity profiles conducted on wells a year after repair indicate the squeezes have held and have maintained the desired profile despite continued injection at fracturing pressure.

• Research Organization: Gulf Oil Corp
• OSTI ID: 5088557
• Report Number(s): CONF-690582-
• Conference Information: Journal Name: Soc. Pet. Eng. AIME, Pap.; (United States) Journal Volume: SPE-2473
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
ALKALINE EARTH METAL COMPOUNDS
BUILDING MATERIALS
CALCIUM CARBONATES
CALCIUM COMPOUNDS
CARBON COMPOUNDS
CARBONATE MINERALS
CARBONATES
CEMENTS
DISPERSIONS
DOLOMITE
INJECTION WELLS
MAGNESIUM CARBONATES
MAGNESIUM COMPOUNDS
MATERIALS
MINERALS
MIXTURES
OXYGEN COMPOUNDS
PERMEABILITY
POROSITY
REPAIR
RESERVOIR ROCK
SLURRIES
SUSPENSIONS
WELL SERVICING
WELLS