During the production process, water phase incursion into reservoir causes blocking damage and seriously affects of tight gas reservoirs. Recently, nanoemulsions have been used as highly effective removing agents in field, but their mechanism is still unclear. In this research, a series with different droplet sizes were synthesized, performance was intensively investigated. To begin, relationsh...

constructing phase diagram and its subsequent quality lines for lean gas condensate reservoirs is always crucial and challenging topic in reservoir fluid studies. due to small amounts of liquid drop-outs in lean gas condensates at reservoir conditions, full experimental tracking of phase diagram and its relevant quality lines is almost impossible for lean gas condensates.on the other hand, eos ...

Supercritical carbon dioxide injection in tight reservoirs is an efficient and prominent enhanced gas recovery method, as it can be more mobilized low-permeable due to its molecular size. This paper aimed perform a set of laboratory experiments evaluate the impacts permeability water saturation on recovery, storage capacity, content during supercritical injection. It observed that provides high...

Stimulated reservoir volume (SRV) fracturing in tight oil reservoirs often induces complex fracture-network growth, which has a fundamentally different formation mechanism from traditional planar bi-winged fracturing. To reveal the mechanism of fracture network propagation, this paper employs a modified displacement discontinuity method (DDM), mechanical mechanism analysis and initiation and pr...

Tight marl is a special type of unconventional oil and gas resource, the study on its reservoir characteristics controlling factors immense scientific significance. In this paper, 113 core samples from Gouxi Area, Eastern Sichuan were selected. Based organic carbon, pyrolysis, X-ray diffraction whole rock, clay analysis, evaluation eyelid-shaped limestone in first member Maokou Formation was ca...

Horizontal well and large-scale hydraulic fracturing are the main technical means for tight gas development at present. However, reservoirs characterized by strong heterogeneity, different types of Wells have production characteristics pressure propagation laws. In view above problems, based on physical reservoir reconstruction evaluation in GAS Reservoir A Sichuan Basin, three fracture models ...

Tight sand reservoir is usually characterized by high heterogeneity and complex pore structure, which makes the permeability calculation a big challenge and leads to difficulties in reservoir classification and productivity evaluation. First, five different Hydraulic Flow Units and respective Porosity-permeability relations were built based on core dataset from Kekeya block, Tuha Basin; and the...