China University of Petroleum

Zhaomin Li

Teng Lu

Chao Zhang

Binfei Li

Songyan Li

Qian Sun

Quanwei Dong

Yajie Xu

Peng Wang

Shouya Wu

Dawei Hou

Zhengxiao Xu

Linghui Xi

Mingxuan Wu

Chao Yu

Yong Wang

Qichao Lv

Jian Li

Yao Wei

Yanling Zhao

Binglin Li

Guangzhong Lv

Faqiang Dang

Longjiang Guo

Jiquan Liu

Jianping Yang

Jianlin Liu

Hongyuan Wang

Meijia Wang

Pengfei Li

Dongya Zhao

Dingyong Zhang

Zhuangzhuang Wang

Dexin Zhang

Hong Cheng

Shizhong Wang

Zihan Gu

Xingchang Xue

Zhaohui Shang

Haifeng He

Xinru Zhao

Fanyu Meng

Aiwen Jing

Skid-mounted flue gas injection equipment and method with an adjustable COenrichment degree are disclosed, and belongs to the technical field of experimental devices for oil and gas field development engineering. As for the equipment of the present disclosure, it is of a skid-mounted structure, is compact in structure, modular, easy to install, and highly mobile, can be applied to remote regions of overland deserts and narrow spaces on offshore platforms, has very high flexibility in operation and maintenance, and in most cases requires lower capital costs and lower energy consumption. As for a membrane separation unit of the present disclosure, a corresponding permeable gas storage tank is designed for each stage of membrane separator. Moreover, the membrane separation unit is further provided with a retained gas storage tank, and the retained gas storage tank and each stage of permeable gas storage tank are each provided with an injection port.

Skid-mounted flue gas injection equipment and method with adjustable COenrichment degree

Provided is a carbon dioxide fluidity control device comprising, a sample preparation tank, a high-pressure stirring unit, a reciprocating plunger pump and a booster pump, wherein the stirring unit comprises one or more high-pressure stirring tanks, each provided with an atomizing spray probe and a piston, wherein a discharge port of the sample preparation tank is connected to the atomizing spray probe via a plunger pump, which is connected to the piston to push the piston to reciprocate; the booster pump is connected to the high-pressure stirring tanks to provide supercritical carbon dioxide to the high-pressure stirring tank; and a discharge port of the high-pressure stirring tanks is connected to an oilfield well group. Provided is a carbon dioxide fluidity control method using the device, comprising mixing surfactants and nanoparticles with heated carbon dioxide, and injecting a microemulsion of supercritical carbon dioxide and nano-silicon dioxide into an oilfield well group.

Carbon dioxide fluidity control device and method

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

A foam solution for profile control and plugging in heavy oil thermal recovery process, a preparation method thereof, and a method for profile control and plugging.

Foam solution and preparation thereof used for profile control and plugging in heavy oil thermal recovery process and method of profile control and plugging

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

An apparatus for preparing compound dispersoids of hydrophobic nanoparticles and surfactants, comprises a water supply pipeline, a compounding mixing pipeline and an aggregating pipeline; the compounding mixing pipeline comprises an ultrasonic dispersion instrument and a liquid storage tank connected in series into a loop, and a second plunger pump allowing unidirectional circulation of materials is arranged between the ultrasonic dispersion instrument and the liquid storage tank; the water supply pipeline is connected to the top of the ultrasonic dispersion instrument; and the aggregating pipeline is connected to a discharge end of the liquid storage tank.

Method for preparing compound dispersoids of hydrophobic nanoparticles and surfactants

Apparatus for preparing compound dispersoids of hydrophobic nanoparticles and surfactants and application thereof

A device for evaluating the foaming property of a gas-soluble surfactant, which comprises a gas source part, an evaluating kettle, a liquid part, and an intermediate container part. The rotation of the evaluating kettle, the gas-soluble surfactant and the supercritical carbon dioxide can be sufficiently and evenly mixed with each other when the solubility of the gas-soluble surfactant in the supercritical carbon dioxide is measured.

Device for evaluating foaming property of gas-soluble surfactant and application 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

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Qingdao, China

Zhaomin Li