Abstract Aiming at the problem of complicated occurrence and flow state fluid in tight sandstone reservoir, this paper takes Chang 7 reservoirs Southwestern Ordos Basin as an example to analyze characteristics movable fluids by nuclear magnetic resonance experiment, while a series microscopic experiments influencing factors difference fluids. The results show that T 2 spectrum curves fluid-satu...

The measured clay-water isotope fractionation for boron was applied to natural organic-rich sediments undergoing illitization. Two field areas were chosen that show illitization occurring over a range of temperatures (80–500°C). Samples representing diagenetic temperatures of illitization (80–200°C) are from the Gulf of Mexico sedimentary basin at 4 to 6-km depth in the Eocene Wilcox Fm and Jur...

The paper discusses the details of application method fluid substitution which is used for predicting elastic properties reservoir rocks and their dependence on pore porosity. This makes it possible to predict changes in response a rock saturation with different fluids. main task this was study productive zones visean deposits Yablunivske field using example single well. integration petrophysic...

Reservoir characterization plays a crucial role in comprehending the distribution of formation properties and fluids within heterogeneous reservoirs. This knowledge is instrumental constructing an accurate three-dimensional model reservoir, facilitating predictions regarding porosity, permeability, fluid flow distribution. Among various methods employed for reservoir characterization, hydraulic...

through a collection of cooperative agents called ants, the near optimal solution to the multi-reservoir operation problem may be effectively achieved employing ant colony optimization algorithms (acoas). the problem is approached by considering a finite operating horizon, classifying the possible releases from the reservoir(s) into pre-determined intervals, and projecting the problem on a grap...

Nano-clean fracturing fluids have broad application potential in coalbed methane reservoir owing to their high stability, good temperature resistance, low filtration loss, and strong frictional resistance reduction. However, the sand-carrying regularity of nano-clean reservoirs is unclear, especially for complex fractures with variable directions. This study established a sand transport model t...

In reservoir engineering, special core analysis experiments (SCAL) are performed in the lab to evaluate production capabilities of an oil reservoir. A critical component SCAL is wettability restoration its original wettability, i.e., wet condition. Typically, aging by saturating with and at temperature where time variable question dictating whether resulting restored strongly or weakly oil-wet....

Most of the operating oil fields are in late stages development, which special attention is paid to production energy efficiency. In accordance with trend toward digitalization technical processes, intelligent control stations for wells currently being developed, one main tasks maintain equipment operation an optimal mode. This work aims develop a methodology selecting energy-efficient well mod...