Oil recovery from fracture blocks by cyclic injection
Journal Article
·
· J. Pet. Technol.; (United States)
Results obtained from a number of laboratory tests confirm the previously proposed idea that a cyclic pressuring/depressuring process in fractured reservoirs may have considerable merit over conventional waterflooding. A new idea brought out by these tests is that conservation of reservoir gas and a supplementary gas injection appear to be necessary for the success of pressure pulsing in applicable reservoirs. A description is given of the laboratory experiments, including the rock properties of the reservoir rock. The history of a typical laboratory test is illustrated by a graphical representation. Primary recovery was followed by 8 pressure-pulse cycles and a final blowdown. Primary recovery was 20% of stock-tank oil initially in place. Water injection in the first pressure pulse equaled the volume vacated by the primary gas and oil production. Oil production in the first pressure pulse equaled 15% of oil initially in place. The graph shows that additional oil was produced in successive pressure- pulse cycles, but that the oil yield declined and the water production rose successively in each of the first 4 cycles.
- Research Organization:
- Continental Oil Co.
- OSTI ID:
- 5720239
- Journal Information:
- J. Pet. Technol.; (United States), Journal Name: J. Pet. Technol.; (United States) Vol. 21; ISSN JPTJA
- Country of Publication:
- United States
- Language:
- English
Similar Records
Pressure pulsing--an improved method of waterflooding fractured reservoirs
Water and gas cyclic pressure pulsing method for improved oil recovery
Method for improved oil recovery from extensively fractured reservoirs
Conference
·
Sat Dec 31 23:00:00 EST 1966
· Soc. Pet. Eng. AIME, Pap.; (United States)
·
OSTI ID:6261406
Water and gas cyclic pressure pulsing method for improved oil recovery
Conference
·
Wed Dec 31 23:00:00 EST 1969
· Soc. Pet. Eng. AIME, Pap.; (United States)
·
OSTI ID:5001112
Method for improved oil recovery from extensively fractured reservoirs
Conference
·
Sun Oct 31 23:00:00 EST 1971
· Proc. of 1st Turkey Petrol. Congr.; (United States)
·
OSTI ID:5172717