... Abstract Literature survey shows that polymer flooding was generally conducted during high water-cut stage (WCT>80%-90%). Even the first China Offshore polymer flooding project was carried out in SZ when water cut was 60%. By then, conduction of polymer flooding in early phase (WCT<10...

... Abstract Chemical flooding EOR techniques, mainly including polymer flooding, chemical combination flooding and foam flooding, play a crucial role in Chinese oil industry. Field tests proved that chemical flooding EOR techniques could be applied successfully in onshore reservoirs in China...

... of the reservoir will lead to appropriate implementation of improved/enhanced oil recovery practices in order to improve the economy of the project. The initial wettability state of the reservoir rock has crucial impact on the performance of polymer flooding process. Polymer flow behavior in the porous media...

... Abstract Field application proves that polymer flooding is an effective technology for improving development effect of heterogeneous reservoirs. Previously, single slug injection is performed. However, there are problems of profile reverse, non-effective circulation of polymer solution in high...

... Abstract This paper presents full field offshoresurfactant-polymer (SP) floodingapplied in JZ 9–3 Oilfield, Bohai Bay, China. Followed by 3-year polymer flooding which produced 4% incremental oil, the field turned to surfactant-polymer flooding. In the first stage, SP flooding was implemented...

... Abstract Polymer flooding has been extensively applied to oilfields as an effective method for EOR, but along with injected time growing, some wells' bottomhole pressure rose up and oil production dropped, and the formation pressure rose while the reservoir was blocked, and water production...

... and it is an important reference for further studies on enhancing oil recovery techniques after ASP flooding. enhanced recovery Proportion Upstream Oil & Gas relative permeability evaluation oil saturation Thickness polymer flooding ASP solution relative permeability curve reservoir displacement...

... Abstract Two phase polymer flooding experiments were carried out using a novel Lab-on-a-Chip experimental set up. The microfluidics device uses porous Glass-Silicon-Glass (GSG) micro-models which were constructed based on reservoir rock thin section. The model attempts to resemble the thin...

... Abstract Polymer flooding in very viscous oil has been gaining interest since its efficiency has been field proven. Multiple laboratory investigations have evidenced that the incremental oil recovered by the tertiary process increases considerably the recovery reached thanks to water flooding...

... Daqing Oilfield has carried out a high viscelasticity polymer flooding pilot in LMDN4-4 Block, demonstrating that the high viscoelasticity polymer flood has bigger capability to further increase oil recovery over moderate viscoelasticity polymer flood. The bulk viscosity of produced polymer...

... Abstract The first field scale Polymer flood project in the Middle East region is being implemented in an oil field of Sultanate of Oman from early 2010. The oil field discussed here containing viscous oil (90 cp) was discovered in 1956 and is located in eastern part of South Oman Salt basin...

... and sweep efficiency and EOR ability for SP flooding is better than that of polymer flooding. EOR effect of SP flooding can be reflected from the following two aspects. Firstly, with SP slug injecting, the pressure of injection well increased and fluid entry profile was adjusted. The performance of profile...

... will increase greatly, which means an order of magnitude of hundreds of million-tons oilfield is discovered without increase any exploration investment. Surfactant-polymer (SP) flooding was a potential enhanced oil recovery (EOR) technology that was more powerful than the polymer flooding. And it was test...

... Abstract Polymer flooding is investigated in laboratory corefloods for potential application in a 2000 cP - 5000 cP heavy oil field. An incremental oil recovery is noted with the addition of very low concentrations of partially-hydrolyzed polyacrylamide (HPAM), either in secondary or tertiary...

..., polymer flooding had not been considered as a viable EOR technology for Pelican Lake due to the high viscosity of the oil, until the idea came of combining it with horizontal wells. A first – unsuccessful – pilot was implemented in 1997 but the lessons drawn from that failure were learnt and a second...

... injection. However, in some cases-for example, deep reservoirs, thin sands, or restricted offshore applications-these methods might not be feasible. This paper discusses published field studies using polymer flooding EOR for viscous oil and provides recommendations for its applicability. In countries...

... Abstract In previous publications, we introduced a methodology to assist in choosing between polymer flooding and infill well drilling. The method has been firstly applied to a synthetic scenario with constant economic parameters, which has demonstrated the impact that oil price can have...

... that include polymer solution properties, injection pressure and injection rates are proposed with the objective of optimizing the SP process in the White Tiger field. The simulation results show that SP flooding is the best recovery schemes in comparison with waterflooding, pure polymer flooding and pure...

... ABSTRACT Daqing oilfield is a heterogeneous sandrock oilfield with multilayers. The application of polymer flooding in the field has obtained significantly technological and economic effects. On the bases of numerous lab experiments, it is indicated that polymer solutions of high concentration...

... Abstract There is no economical exploitation value when water cut of oil wells reaches 98% during the process of water flooding after polymer flooding. But the injection and production systems are still in good condition. Core data shows that there are about 21.2% remaining oil which mainly...