... Abstract Primary oil recovery remains less than 10% in tight oil reservoirs, even after expensive multistage horizontal well hydraulic fracturing stimulation. Substantial experiments and pilot tests have been performed to investigate CO 2 -EOR potential in tight reservoirs; however, some...

... stimulation effect for tight oil reservoir. Field application of the new fracturing fluid in 10 tight gas wells showed the enhancement of gas production over 100%. The fluid has 20% lower friction pressure than that of guar fluid. Hence, the new supramolecular fluid is an effective fracturing fluid...

... 31.13 A18 0.021 0.21 4828.60 2698.04 0.27 46.15 0.25 16.89 A19 0.043 0.12 5056.86 2416.22 0.35 39.47 0.44 29.31 In order to realize the commercial development of tight oil reservoirs, it is necessary to use large-scale fracturing technology to obtain high industrial...

... with hydraulic fracturing have enabled commercial oil production from tight oil reservoirs. However, the primary recovery factor remains very low, usually less than 15%. It is a big challenge to supply formation drive energy to sustain production. After hydraulic fracturing, there is often pre-mature water...

... Abstract Daqing oilfield has been produced for more than 50 years. Oil production from conventional oil pools is dropping significantly. But in recent years, massive fracturing technology were applied to difficult tight oil reservoir and unconventional gas development. More and more difficult...

... construction exploration exploitation tight oil reservoir production capacity Drilling Introduction The preliminary results of the latest resource appraisal show that the tight oil initially in place of China exceeds 40 billion tons and moreover China ranks the 3 rd all around the world in terms...

... effect hydraulic fracturing drillstem/well testing reservoir pressure experiment application society of petroleum engineers Drillstem Testing structural geology bottom hole pressure oil field sensitivity co 2 viscosity reduction reservoir tight oil reservoir non-liquid co 2 minimum oil...

... to characterize the pore structure of the tight oil sample in three scales, millimeter, micrometer and nanometer, is proposed and performed on two core samples of tight oil reservoir from Chuanzhong Oilfield. Macro-CT is used to scan a whole core and to obtain millimeter scale images which represent the porosity...