Yushulin Oilfield Development Ltd Liability Company

Oilfield, China

Yushulin Oilfield Development Ltd Liability Company

Oilfield, China
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Liu L.,Northeast Petroleum University | Pi Y.,Northeast Petroleum University | Guo X.,Northeast Petroleum University | Geng X.,Yushulin oilfield development Ltd Liability Company | Li Q.,Northeast Petroleum University
Energy Education Science and Technology Part A: Energy Science and Research | Year: 2014

In order to meet the demand of CO2-foam flooding in ultra-low permeability blocks of Jilin oilfield in China, a great deal of laboratory experiments have been proceeded to screen the most suitable formulation, and finally three kinds of formula system were determined, which are respectively three foaming agents FP388, FP246 and FP275 with the mass content of 0.4 wt%, foam stabilizer WP125 with the mass content of 0.1wt%, viscosity stabilizing agent sulfourea with the concentration of 150mg/L. By the property evaluation experiments, the stability, foaminess and injection ability of three kinds of formula system have been evaluated, the results showed that their stability is near with temperature increase, the best foaminess is the system of foaming agent FP388, three kinds of formula system all can be injected into ultra-low permeability reservoirs with lower limit permeability 0.9×10−3μm2, their property evaluation proved three kinds of formula system all can meet the demand of test block in Jilin oilfield. © Sila Science. All rights reserved.


Pi Y.,Northeast Petroleum University | Li Q.,Northeast Petroleum University | Cao R.,Petrochina | Geng X.,Yushulin Oilfield Development Ltd Liability Company | And 2 more authors.
Energy Education Science and Technology Part A: Energy Science and Research | Year: 2014

For interlayer heterogeneous reservoirs, polymer flooding has developed a new direction for the production technology research, which includes the issues of permeability differential range, alternating cycle, and the size of polymer slug for alternating injection to improve the oil displacement effect of reservoir interlayer heterogeneity. So this paper conducted the related laboratory experiment research. Two kinds of polymer displacement medium which are high molecular weight (25 million) and high concentration (2000ppm), middle molecular weight (12 million) and normal concentration (1000 ppm), were injected alternately and were injected in single slug by the double tube parallel experiments. The experimental results showed that: whenthe permeability differential grade was 2, the cumulative proportion of fluid entry in low permeability layer went up first and then down with the increase of alternate cycle, the biggest increase in proportion was 9.7%, which cycle was 3 and incremental of oil recovery was 27.5%; when the permeability differential grade was 6, the cumulative proportion of fluid entry in low permeability layer changed on the same trend as the grade was 2, the biggest increase in proportion was 14.6%, which cycle was 8 and incremental of oil recovery was 22.1%. The research results of this paper will provide theory guide for the actual polymer solution injection in oilfield. © Sila Science. All rights reserved.


Jiang J.,China University of Petroleum - East China | Jiang J.,Yushulin Oilfield Development Ltd Liability Company | Zhao C.,China University of Petroleum - East China | Zhang Q.,Yushulin Oilfield Development Ltd Liability Company | And 3 more authors.
Well Testing | Year: 2010

Aiming at the geological condition, the existed development well pattern and fracture phases in Area of Well bhu322 in Yushulin oilfield, using ECLIPSE, the software for reservoir simulation, we did some reservoir simulations of multi-parameter fracturing treatment for increasing production rate and injection rate, and so that optimized the fracture parameters for fracturing treatment in this area. The results showed that if the effective permeability of reservoir is 0.05, 0.1, 0.2 and 0.3 mD respectively, the length of fracture would be 120, 90, 45 and 30 m respectively in first class wells; 120, 90, 75 and 75 m respectively in second class wells; and 120, 120, 90 and 90 m respectively in third class wells; and for fracturing in water wells, corresponding to above effective permeability, the length of fracture is 60, 45, 45 and 30 m; the conductivity of the fracture is 20-30 μm2? cm. Production rate prediction under the condition of optimized fracture parameters showed that there is great potential to conduct integral fracturing treatment; and which provides technical guide for later adjustment of development program in this area and target parameters for optimizing fracturing treatment design in this area.

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