Study on Reservoir Engineering: ASP Flooding Pilot Test in Karamay Oilfield

Abstract

In the northern part of Erzhong District in Karamay conglomerate oilfield, Xinjiang, China, ASP pilot tests have been conducted in 13 wells in a pilot area of 0.031 square kilometers since September 1994. The pilot area was developed through combining laboratory results in recent years with specific conditions in the field. This test is aimed to verify oil displacement efficiency of ASP and related reservoir behaviors, to improve production techniques necessary to obtain remaining oil from conglomerate reservoirs, and to provide data for economic feasibility evaluation. P. 385

Surface Chemistry of Oil Recovery From Fractured, Oil-Wet, Carbonate Formation

“…Also, this technology has found many applications during the past decade when it was commonly thought that surfactant flooding was not economical because of the expense of the surfactant [25][26][27][28][29][30][31][32][33][34][35][36][37][38][39][40] .…”

Characterization of Mixed Wettability at Different Scales and Its Impact on Oil Recovery Efficiency

“…This is consistent with previous results reported for threephase systems 27 . In spreading systems the oil maintains phase continuity till very low oil saturations and can, therefore, be drained to near zero residual saturation 28,29,30,31 . Higher oil recoveries may, therefore, be expected for spreading oils.…”

“…It builds on the previous understanding developed for alkaline surfactant flooding 23,24 . Also, this technology has found many applications during the past decade when it was commonly thought that surfactant flooding was not economical because of the expense of the surfactant [25][26][27][28][29][30][31][32][33][34][35][36][37][38][39][40] .…”

Surfactant Based Enhanced Oil Recovery and Foam Mobility Control

“…It builds on the previous understanding developed for alkaline surfactant flooding 36,37 . Also, this technology has found many applications during the past decade when it was commonly thought that surfactant flooding was not economical because of the expense of the surfactant [38][39][40][41][42][43][44][45][46][47][48][49][50][51][52][53] .…”