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Quantitative interpretation and evaluation method of unit volume rock gas content

A unit volume and evaluation method technology, applied in the industry, can solve problems such as evaluation errors of formation oiliness

Active Publication Date: 2022-04-19
CNPC BOHAI DRILLING ENG +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, the interpretation and evaluation technology for oil and gas layers is still in the qualitative stage, and quantitative judgments cannot be made, and there are still some errors in the oil-bearing evaluation of formations

Method used

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  • Quantitative interpretation and evaluation method of unit volume rock gas content
  • Quantitative interpretation and evaluation method of unit volume rock gas content
  • Quantitative interpretation and evaluation method of unit volume rock gas content

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Embodiment Construction

[0020] Below in conjunction with the specific embodiment of accompanying drawing and attached table, the present invention is described in further detail:

[0021] Such as figure 1 As shown, the method for quantitative interpretation and evaluation of gas content per unit volume of rock of the present invention comprises the following steps:

[0022] (1) Obtain various logging parameters through real-time acquisition, processing, storage, recording and calculation of Dema engineering mud logging instrument and gas logging analyzer; obtain degassing efficiency of degasser through field test; collect Engineering parameters while drilling required for the calculation formula of gas content per unit volume of rock;

[0023] (2) Calculate the rock gas content per unit volume of the target layer of the research well, and combine with the interpretation and evaluation criteria to obtain the reservoir fluid type.

[0024] In the step (1), the parameters obtained by the gas logging a...

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Abstract

The invention discloses a method for quantitative interpretation and evaluation of rock gas content per unit volume. The specific steps are as follows: through the real-time collection, processing, storage, recording and calculation of the comprehensive mud logging instrument and gas logging analyzer of Dema Engineering, each Items such as mud logging parameters, gas logging parameters, and engineering parameters while drilling; the degassing efficiency of the degasser is obtained through the experiment while drilling at the operation site; the unit volume of the target interval of the research well is calculated by reading the gas compression factor chart and combining with the corresponding engineering parameters Rock gas content. Through the integration of the fluid conclusions of the reservoirs of drilled wells with different oil properties and layer groups, the quantitative interpretation and evaluation standards for the gas content of unit volume rocks are obtained through statistical summary. The invention is a fluid quantitative interpretation and evaluation standard for new parameters, and a comprehensive interpretation and evaluation method that can accurately determine reservoir fluid properties.

Description

technical field [0001] The invention relates to a method for quantitatively interpreting and evaluating the gas content of rock per unit volume, which is suitable for the field of petroleum geological exploration, especially for industries such as mud logging and drilling. Background technique [0002] Mud logging technology is the most basic technology in the process of oil and gas exploration and development, and it is one of the most timely and direct means to discover oil and gas reservoirs and correctly evaluate oil and gas reservoirs. With the advancement of drilling technology and the increase of reservoir types, the complexity of oil and gas exploration has increased, and the interpretation and evaluation of oil and gas layers has become more and more difficult. How to quickly, accurately and reasonably interpret and evaluate oil and gas layers is the key to the development of mud logging technology. At present, the interpretation and evaluation technology for oil an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06Q50/02E21B47/07E21B47/08E21B47/00
CPCG06Q50/02E21B47/00E21B47/08E21B47/07
Inventor 齐振勤孔越吴佳陈灿珠李长洪何月慧李玉英张杰杨绍存施宝海金娟殷文荣吴洪周
Owner CNPC BOHAI DRILLING ENG
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