Author
Pengcheng Liu
Bio: Pengcheng Liu is an academic researcher from China University of Geosciences (Beijing). The author has contributed to research in topics: Steam-assisted gravity drainage & Steam injection. The author has an hindex of 11, co-authored 36 publications receiving 355 citations.
Papers
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TL;DR: In this article, a one-dimensional long core displacement experiment was designed based on injection of pure foam liquid, air, and air-foam system into the tight matrix core and fracture core.
71 citations
TL;DR: In this paper, the in situ stress distribution within depths of 136-1244 m and its implications for coal permeability (0.0001-1.56 mD), gas content (5-22 m3/t) and gas productivity in western Guizhou were investigated.
48 citations
TL;DR: In this article, a 3D experimental model for urea and urea-and-foam-assisted steam flooding was designed and developed to quantify and alleviate steam override and channeling often cause high residual oil saturation.
48 citations
TL;DR: In this paper, a two-dimensional physical model was designed to investigate the production mechanisms of nitrogen on SAGD, and two comparative injection schemes, namely the conventional SAGd and nitrogen assisted SagD (NA-SAGD), were conducted to investigate how nitrogen co-injection with steam improved the SOGD performance.
42 citations
TL;DR: In this paper, a study of coal-bearing Shanxi and Taiyuan formations in the Anze Block, southern Qinshui Basin, reveals the water-flow direction, hydrodynamic units, special tectonic units and their influence on the accumulation and production of coalbed methane.
37 citations
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TL;DR: In this paper, the influence of real coal macropore structure on the fluid flow through coal was studied through 3-D coal structure reconstruction by the CT images, and the reconstructed coal structure, the micron-scale structure parameters were quantitatively analyzed.
139 citations
TL;DR: In this article, the porosity/pore size distribution relationship with matrix compressibility was investigated using MIP and nitrogen adsorption/desorption isotherms for coal ranks.
104 citations
TL;DR: A comprehensive review of different thermal and non-thermal EOR methods is presented and discussed in this paper, which is considered the dominant technique among all different methods of EOR.
Abstract: The oil production from any well passes through three stages. The first stage is the natural extraction of oil under the well pressure, the second stage starts when the well pressure decreases. This second stage includes flooding the well with water via pumping sea or brackish water to increase the well pressure and push the oil up enhancing the oil recovery. After the first and secondary stages of oil production from the well, 20–30% of the well reserve is extracted. The well is said to be depleted while more than 70% of the oil are left over. At this stage, the third stage starts and it is called the enhanced oil recovery (EOR) or tertiary recovery. Enhanced oil recovery is a technology deployed to recover most of our finite crude oil deposit. With constant increase in energy demands, EOR will go a long way in extracting crude oil reserve while achieving huge economic benefits. EOR involves thermal and/or nonthermal means of changing the properties of crude oil in reservoirs, such as density and viscosity that ensures improved oil displacement in the reservoir and consequently better recovery. Thermal EOR, which is the focus of this paper, is considered the dominant technique among all different methods of EOR. In this paper, we present a brief overview of EOR classification in terms of thermal and nonthermal methods. Furthermore, a comprehensive review of different thermal EOR methods is presented and discussed.
95 citations
TL;DR: A comprehensive review of existing literature on the applications and recent advancement of foam fracturing fluid is conducted in this article, where results of experimental studies, simulations predictions and field applications were extensively discussed.
86 citations
TL;DR: A review of the current status of nanoparticles applications for hydraulic fracturing treatments of the unconventional reservoirs, highlighting the mechanisms and applications, the findings, the technical challenges and directions for future studies is presented in this article.
84 citations