China University of Petroleum

Teng Lu

Zhaomin Li

Binfei Li

Yajie Xu

Songyan Li

Dawei Hou

Zhengxiao Xu

Chao Zhang

Qichao Lv

Jian Li

Yao Wei

Qian Sun

Yanling Zhao

Shouya Wu

Binglin Li

Mingxuan Wu

Jianping Yang

Hongyuan Wang

Shizhong Wang

Jianlin Liu

Dingyong Zhang

Zhuangzhuang Wang

Dongya Zhao

Xinru Zhao

Aiwen Jing

Fanyu Meng

Longjiang Guo

Faqiang Dang

Disclosed is a method for performing integral plugging control on water invasion and steam channeling of an edge-bottom water heavy oil reservoir. The method for performing integral plugging control on water invasion and steam channeling of an edge-bottom water heavy oil reservoir comprises the following steps: (1) selecting an oil reservoir; (2) arranging a huff-puff well; (3) performing steam huff-puff development; and (4) performing integral plugging control. An integral plugging control technology is used for the method, a high-strength nitrogen foam system is injected by means of well rows at different positions in the oil reservoir, and effective plugging walls are formed at different positions from the edge-bottom water to reduce water invasion and steam channeling.

Method for integral profile control and plugging of water encroachment and steam channeling of heavy oil reservoir with edge and bottom water

A CCUS system for exploiting a thickened oil reservoir based on an optimal flue gas COenrichment ratio. The CCUS system comprises a flue gas COenrichment unit, a flue gas injection unit, a thickened oil thermal production well group unit and a produced gas recovery unit; the fuel gas COenrichment unit comprises an air separating enrichment unit and a boiler injection gas premixed tank; the air separating enrichment unit comprises an air separating primary device used for separating air into oxygen and nitrogen preliminarily, and an air separating secondary device used for further enriching a part of the oxygen which is subjected to the preliminary separation; and the boiler injection gas premixed tank is used for mixing the preliminarily separated nitrogen, the preliminarily separated part of the oxygen and/or the further enriched oxygen.

CCUS (carbon capture utilization and storage) system for exploiting thickened oil reservoirs based on optimal flue gas COenrichment ratio and working method thereof

A composite nitrogen huff and puff method for a bounded fault block reservoir comprises: selecting the reservoir to be developed, wherein the reservoir to which the development method is applicable is roughly screened according to the following conditions: the reservoir is a bounded fault block reservoir, buried depth&#x3c;5000 m, residual oil saturation&#x3e;0.5, reservoir thickness&#x3e;10 m, horizontal permeability&#x3e;100 mD, vertical permeability to horizontal permeability ratio&#x3e;0.35, reservoir porosity&#x3e;0.20, and stratigraphic dip&#x3e;8&#xb0;; and sequentially performing the following huff and puff phases: a nitrogen huff and puff phase, a nitrogen and water composite huff and puff phase, a nitrogen and foaming agent composite huff and puff phase, and a nitrogen and carbon dioxide composite huff and puff phase.

Composite nitrogen huff and puff method for bounded fault block reservoir

The invention relates to the recovery of heavy oil reservoirs, and more particularly to a supported catalyst-assisted microwave method for exploiting a heavy oil reservoir. The method includes: (1) injecting a slug of a supported catalyst fluid into the heavy oil reservoir; (2) placing a microwave generator in the heavy oil reservoir to perform volumetric heating on an oil layer containing the supported catalyst fluid; and (3) turning off the microwave generator and injecting water into the heavy oil reservoir for subsequent displacement, where a water injection rate is 3 m/d or less.

Supported catalyst-assisted microwave method for exploiting heavy oil reservoir

Disclosed belongs to the technical field of oil and gas field development engineering, and particularly relates to a super heavy oil development method for strengthening an SAGD steam chamber to break through a low physical property reservoir. The super heavy oil development method for strengthening the SAGD steam chamber to break through the low physical property reservoir includes the following steps: (1) selection of a developed oil reservoir; (2) well distribution; (3) steam chamber forming; (4) steam chamber expansion; (5) steam chamber strengthening. The method may enhance the ability of the steam chamber to break through the low physical property reservoir, enlarge the development height of the steam chamber, and further improve the SAGD development effect of super heavy oil.

Super heavy oil development method for strengthening SAGD steam chamber to break through low physical property reservoir

Disclosed belongs to the technical field of heavy oil extraction, and specifically relates to a viscosity reduction system for microwave extraction of heavy oil and a preparation method thereof. The viscosity reduction system is a magnetic graphene oxide. The viscosity reduction system added to heavy oil has a significant viscosity reduction effect after microwave treatment. The viscosity reduction system exhibits lipophilicity and can be adsorbed on oil droplets, so that the thermal effect of microwaves assisted by the viscosity reduction system mainly acts on a reservoir, which reduces heat loss during heat transfer. At the same time, the viscosity reduction system is magnetic, which helps directional regulation and separation under the action of a magnetic field.

Viscosity reduction system for microwave extraction of heavy oil and preparation method thereof

A novel inorganic fine particle reinforced foam system for an oil-gas field and preparation method thereof. The reinforced foam system comprises a gas phase and a liquid phase; the gas phase is nitrogen, carbon dioxide or the air; the liquid phase is prepared from, by mass: 0.2-0.8 wt % of a foaming agent, 0.5-2.0 wt % of novel inorganic fine particles and balance of water; the novel inorganic fine particles are fine particulate matter with diameters being smaller than or equal to 2.5 microns captured and screened from the atmosphere.

Inorganic fine particle reinforced foam system for oil-gas field and preparation method thereof

Growing community of inventors

Qingdao, China

Teng Lu