Permeability reduction mechanisms involved in in-situ gelation of a polyacrylamide/chromium (VI)/thiourea system

Journal Article · Thu Jan 31 23:00:00 EST 1991 · SPE (Society of Petroleum Engineers) Reservoir Engineering; (United States)

DOI:https://doi.org/10.2118/17333-PA· OSTI ID:5847522

McCool, C S; Green, D W; Willhits, G P ^[1]

---

1. University of Kansas, KS (US)

In this paper an investigation of the in-situ gelation of a polyacrylamide/chromium(VI)/thiourea system under flow conditions in unconsolidated sandpacks is presented. High flow resistance was observed in a localized section of the sandpacks that was consistent with deep-bed filtration mechanisms. A method to measure the size of aggregates in gel solution is also presented. Results from this method showed that the gel aggregates grow with reaction time and distance traveled through the sandpack, supporting the conclusion that filtration is a dominant factor in the in-situ gelation process under flow conditions.

• OSTI ID: 5847522
• Journal Information: SPE (Society of Petroleum Engineers) Reservoir Engineering; (United States), Journal Name: SPE (Society of Petroleum Engineers) Reservoir Engineering; (United States) Vol. 6:1; ISSN SREEE; ISSN 0885-9248
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020200 -- Petroleum-- Reserves
Geology
& Exploration
020300* -- Petroleum-- Drilling & Production
ANTITHYROID DRUGS
CARBONIC ACID DERIVATIVES
COLLOIDS
DISPERSIONS
DRUGS
ESTERS
FILTRATION
FLUID INJECTION
FLUID INJECTION PROCESSES
FLUID MECHANICS
GELS
GEOLOGIC DEPOSITS
HORMONE ANTAGONISTS
MECHANICS
MICROEMULSION FLOODING
MINERAL RESOURCES
MISCIBLE-PHASE DISPLACEMENT
OIL FIELDS
ORGANIC COMPOUNDS
ORGANIC POLYMERS
ORGANIC SULFUR COMPOUNDS
PERMEABILITY
PETROLEUM DEPOSITS
POLYACRYLATES
POLYAMIDES
POLYMERS
POLYVINYLS
RESOURCES
SAND
SEPARATION PROCESSES
SIZE
STIMULATION
THIOUREA
THIOUREAS
WELL STIMULATION