... different oil recovery experiments were conducted using medium heavy crude oil (19 °API), including CO 2 -foam flooding after water flooding, CO 2 -foam flooding and steam-CO 2 -foam flooding. The results showed that steam-CO 2 -foam flooding increases oil recovery dramatically by simultaneous mechanisms...

... Abstract Economically achievable oil recovery factors for offshore fields are typically lower than for similar onshore fields due to larger well spacing, inadequate reservoir characterization and shorter economic field life. The key challenge for mature offshore field development is to leverage...

... profile of the surfactants after subjecting them to reservoir condition for specific periods. The APG showed salinity tolerance up to 263,000 ppm at 220 oF. During phase study divalent ions are seen to have considerable impact on the nature of microemulsion (middle phase). Incremental recovery between 19...

... Abstract This paper discusses about the optimization study of applying the enhanced oil recovery technique in a multilayered mature offshore oilfield. This field is located at water depth 65-70 m. There is significant variation in rock and fluid properties from top to bottom in the field. Upper...

... 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...

... Abstract A series of laboratory investigation on factors affecting Enhanced Oil and Gas Recovery and CO<sub>2</sub> geo-sequestration were conducted. The coreflooding experiments were done using a relatively heavy crude oil (18& API), a number of brines of 0.18%-2.5% NaCl...

... Abstract Studies indicate that as much as 60% of the initial oil-in-place may remain after secondary recovery. At the same time, Enhanced Oil Recovery (EOR) methods are growing more cost effective, with 3% of current worldwide production now attributable to EOR. EOR projects, however...

... Abstract We have performed a miscible CO 2 flood study using fractured and unfractured carbonate cores and 31° API west Texas oil to evaluate oil recovery under three main injection modes: SWAG, WAG, and CGI. For each injection mode, three cases were considered: unfractured, one horizontal...

... gravity drainage cold lake enhanced recovery upstream oil & gas performance prediction thermal method sagd operation pay thickness recovery ultimate recovery spe 144135 horizontal well saturation modeling & simulation nabiye alberta total fluid geocellular model expansion...

... Abstract The study of gas-condensate reservoirs has been a fruitful field of research in the last years because of their peculiar behaviour. Gas cycling is the recovery process of choice for gas-condensate reservoirs but this process can often not be implemented because of economic reasons...

... Abstract Chemical enhanced oil recovery (CEOR) is emerging as a vital method to increase recoverable oil from aging reservoirs, but economics and the achievable incremental recoverable oil will dictate its widespread adoption. Water chemistry of the injectant plays an important role...

...Recovery Tests with Limestone Core Tests with Hele-Shaw model show that both strains are most effective when grown at 45°C. Their performance at reservoir temperature should be further investigated. A limestone core was cut from outcrop at Jabel Hafeet Mountain in UAE. The core has porosity...

... on performances of thermal and non-thermal flood processes. Then, a detailed economic analysis was performed to assess the economic feasibility of each recovery process/scenario. This work has contributed significantly toward our understanding of the mechanisms of thermal injection in high permeability heavy oil...

... Abstract Many fields in the Middle East suffer from low recovery and declines in primary production due to low oil gravity (<20 API) and viscosities above 100 cP. The studied field contains well in excess of 1 billion barrels in place with overall recovery expected to be less than 10...

... Abstract Oil production increased in two test wells in a mature oil reservoir in Mann Field, Myanmar by successfully applying an enzyme-enhanced oil recovery (EEOR) process, a subset of microbial-enhanced oil recovery. A concentrated, water-soluble enzyme preparation made from DNA-modified...

... to be postponed due to operational issues. Instead, drilling campaign will start end of 2011 and the new schedule was incorporated in the optimization runs. In the long-term however, recovery is higher for the optimized case by about 10 MMstb as shown in Figure 10 . Result from the optimization study...

... of such reservoirs to understand their behavior when strong water drives are present and particularly when oil viscosities are moderately high. Most such reservoirs are basement or volcanic rocks; however, numerous analogous clastic and carbonate reservoirs have also been identified. Recoveries in "Type I...

... Abstract The gravity dominated CO 2 injection has received increased attention in the oil fields as it utilizes gravity force to stably displace the remaining oil after primary and/or secondary recovery. Effect of gravity is also important in some CO 2 sequestration in aquifers. To visualize...

... (as at Jan 2010) around 21% of STOIIP. Immiscible Water-Alternating Gas (IWAG) EOR injection has been identified to be implemented which can enhance the oil recovery further. A Pilot injection project was carried out in sub-block area of the main reservoirs for a period of four (4) years. Full field...

... was recovered. Many small scale heterogeneities were identified that led to a lower-than-expected reservoir volume contacted. Unexpected communication between the target sand and the underlying sands outside the pattern also contributed to low tracer recovery and low swept volume. The tracer test was history...