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Effect of cold water injection on operation of and oil production from formations of Romashkino field

Journal Article:

Abstract

Each year about 130 million cu m of cold water are injected into this field. Since cold water can lower reservoir temperature, increase oil viscosity, deposit paraffin in the formation, and reduce oil recovery, a thermal survey of this field was conducted. The survey showed that the average reservoir temperature was not reduced by cold-water injection for 15 yr. However, local cooling was observed at distances less than 400 m from the water injection well. Through these wells more than 4 PV of water have passed. The thermal front lags 1,500 m behind the advancing water front. For this reason, cold-water injection does not reduce oil recovery where there is uniform advance of the floodwater. When the formation is heterogeneous so that water advances more rapidly in high-permeability sand than in adjoining low-permeability sand, then the cooling effect can reduce oil recovery. For this reason, it is advisable to force water into the entire interval of the oil formation. An isotherm map of the Romashkino field is shown.
Publication Date:
Nov 01, 1968
Product Type:
Journal Article
Reference Number:
EDB-82-076280
Resource Relation:
Journal Name: Neft. Khoz.; (USSR); Journal Volume: No. 1968:11
Subject:
02 PETROLEUM; OIL WELLS; WATERFLOODING; USSR; OIL FIELDS; COOLING; DEPOSITION; ENHANCED RECOVERY; HEAT TRANSFER; HETEROGENEOUS EFFECTS; ISOTHERM; PARAFFIN; PERMEABILITY; PETROLEUM; RESERVOIR ENGINEERING; RESERVOIR ROCK; RESERVOIR TEMPERATURE; VISCOSITY; VOLUME; ALKANES; ASIA; EASTERN EUROPE; ENERGY SOURCES; ENERGY TRANSFER; ENGINEERING; EUROPE; FLUID INJECTION; FOSSIL FUELS; FUELS; GEOLOGIC DEPOSITS; HYDROCARBONS; MINERAL RESOURCES; ORGANIC COMPOUNDS; OTHER ORGANIC COMPOUNDS; PETROLEUM DEPOSITS; RECOVERY; RESOURCES; WAXES; WELLS; 020300* - Petroleum- Drilling & Production
OSTI ID:
5650404
Country of Origin:
USSR
Language:
Russian
Other Identifying Numbers:
Journal ID: CODEN: NEKHA
Submitting Site:
TUL
Size:
Pages: 26-30
Announcement Date:

Journal Article:

Citation Formats

Mingareev, R Sh, Vakhitov, G G, and Sultanov, S A. Effect of cold water injection on operation of and oil production from formations of Romashkino field. USSR: N. p., 1968. Web.
Mingareev, R Sh, Vakhitov, G G, & Sultanov, S A. Effect of cold water injection on operation of and oil production from formations of Romashkino field. USSR.
Mingareev, R Sh, Vakhitov, G G, and Sultanov, S A. 1968. "Effect of cold water injection on operation of and oil production from formations of Romashkino field." USSR.
@misc{etde_5650404,
title = {Effect of cold water injection on operation of and oil production from formations of Romashkino field}
author = {Mingareev, R Sh, Vakhitov, G G, and Sultanov, S A}
abstractNote = {Each year about 130 million cu m of cold water are injected into this field. Since cold water can lower reservoir temperature, increase oil viscosity, deposit paraffin in the formation, and reduce oil recovery, a thermal survey of this field was conducted. The survey showed that the average reservoir temperature was not reduced by cold-water injection for 15 yr. However, local cooling was observed at distances less than 400 m from the water injection well. Through these wells more than 4 PV of water have passed. The thermal front lags 1,500 m behind the advancing water front. For this reason, cold-water injection does not reduce oil recovery where there is uniform advance of the floodwater. When the formation is heterogeneous so that water advances more rapidly in high-permeability sand than in adjoining low-permeability sand, then the cooling effect can reduce oil recovery. For this reason, it is advisable to force water into the entire interval of the oil formation. An isotherm map of the Romashkino field is shown.}
journal = {Neft. Khoz.; (USSR)}
volume = {No. 1968:11}
journal type = {AC}
place = {USSR}
year = {1968}
month = {Nov}
}