International Journal of Oil, Gas and Coal Engineering

Volume 7, Issue 1, January 2019

  • The Attribute Optimization Method Based on the Probability Kernel Principal Component Analysis and Its Application

    Jingjing Zheng, Yun Wang, Chunying Yang

    Issue: Volume 7, Issue 1, January 2019
    Pages: 1-6
    Received: 8 November 2018
    Accepted: 6 December 2018
    Published: 21 January 2019
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    Abstract: The principal component analysis (PCA) is the most common attribute optimization analysis techniques, but it is a linear method and exists the problem of lack of probability model and the absence of higher-order statistics information. It has poor comprehensive ability to complex non-linear attributes. Therefore, in order to overcome two shortcomin... Show More
  • Discussion on the Method of Evaluating Oil and Water Layers by Using Ratio of Deep Resistivity and Flush Zone Resistivity

    Yang Kebing, Li Shidong, Wang Huijing, Fu Kang, Pan Xuefeng, Zhang Junjie

    Issue: Volume 7, Issue 1, January 2019
    Pages: 7-12
    Received: 10 November 2018
    Accepted: 3 December 2018
    Published: 21 January 2019
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    Abstract: The depth-shallow resistivity ratio method for the same measuring point is an important method to identify oil and water reservoirs, But its application effect in conventional logging data is not good. By studying the invasion characteristics of resistivity curves of reservoirs, the ratio of deep resistivity and flush zone resistivity at the same m... Show More
  • Analytical Fracture Models for Overall Hydraulic Fracturing Reservoirs

    Zhongbao Wu

    Issue: Volume 7, Issue 1, January 2019
    Pages: 13-20
    Received: 8 August 2018
    Accepted: 20 September 2018
    Published: 24 January 2019
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    Abstract: Hydraulic fracturing has become an indispensable stimulation measure for low permeability reservoirs, but how to quantitatively establish the fracturing geological model of this kind of reservoir has been an important factor restricting the progress of numerical research on overall hydraulic fracturing reservoirs. Based on the basic hypothesis of h... Show More
  • Integrated Gas Lift Completion String for Ultra-Deep Reservoir

    Zhang Peng

    Issue: Volume 7, Issue 1, January 2019
    Pages: 21-25
    Received: 5 December 2018
    Accepted: 9 January 2019
    Published: 29 January 2019
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    Abstract: Kenjiyak Oilfield, in Kazakhstan, is an ultra-deep oil reservoir of low porosity and ultra-low permeability, causing a myriad of technical problems when produced with conventional gas lift string. To address these problems, an integrated gas lift completion string has been developed. The completion string integrates fracturing, drainage and gas lif... Show More
  • Technical Innovation of Ultra-Deep Well Drilling Rig and Its Development Trend

    Fang Taian, Zhou Zhixiong, Wu Changliang, Yang Xiaoguang

    Issue: Volume 7, Issue 1, January 2019
    Pages: 26-32
    Received: 13 December 2018
    Accepted: 3 January 2019
    Published: 29 January 2019
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    Abstract: 8000-meter drilling rig and quadruple joint 9000-meter drilling rig have been developed for ultra-deep and complex wells of the complicated geological structure area in Tarim Basin, China. The key components of the drilling rigs are redesigned and innovated, including optimization of the high bearing capacity derricks and substructures and a comple... Show More
  • A New Method for Analyzing the Dimension Error of Marine Steel Structures

    Meng Linghe, Zhang Shijian, Xiao Liquan, Wang Xuelian, Yang Zilong, Wang Zhihong

    Issue: Volume 7, Issue 1, January 2019
    Pages: 33-39
    Received: 10 October 2018
    Accepted: 23 January 2019
    Published: 15 February 2019
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    Abstract: With the strengthening of offshore oil exploitation, the construction of marine steel structures such as offshore oil platforms has been carried out on a large scale. During the construction process, the dimensional control and error analysis of marine steel structures is an important point. The dimensional error of marine steel structure is an imp... Show More
  • Study on the Conditions of Biogas Fermentation from Distillers' Grains

    Mengmeng Yu, Qinghua Ding, Zhifeng Lv, Yuancheng Zhang

    Issue: Volume 7, Issue 1, January 2019
    Pages: 40-46
    Received: 26 December 2018
    Accepted: 25 January 2019
    Published: 19 February 2019
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    Abstract: The distillers' grains fermentation was studied, which was from ethanol fermentation of sweet sorghum stalk. The factors such as temperature, concentration, inocula, pH etc. were analysis. The results showed the optimal temperature was 55°C, the optimal weight concentration of distillers' grains was 3.3%, the amount of inocula was 1.5%, and the pH ... Show More