Formation Fluid Separation Analysis and Evaluation Method

A technology for separation and analysis of formation fluids, applied in earthwork drilling, wellbore/well components, buildings, etc., can solve the problems of less analysis components and indeterminate degassing, achieve accurate and timely analysis and interpretation, and improve the interpretation coincidence rate Effect

Active Publication Date: 2017-11-14
BC P INC CHINA NAT PETROLEUM CORP +1
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Problems solved by technology

At present, the traditional non-power mechanical degassing device uses the power of the drilling fluid itself to act on the comb-shaped structure inside, so that the gas in the drilling fluid overflows and enters the gas analysis device under the action of the vacuum pump; while the power degasser uses Rotate the stirring equipment to improve the efficiency of gas removal; but there are problems of indeterminate degassing and few analytical components

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  • Formation Fluid Separation Analysis and Evaluation Method

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Embodiment Construction

[0023] Below in conjunction with accompanying drawing and specific embodiment the present invention will be described in further detail:

[0024] see figure 1 , formation fluid separation analysis evaluation method of the present invention comprises the following steps:

[0025] 1) Three-phase separation: first, a high-efficiency and low-resistance multi-tubular cyclone separator is used as pre-separation. After the formation fluid enters the cyclone equipment from the side along the tangential direction at a certain speed, it rotates according to the shape of the cyclone tube. As the fluid moves toward the bottom end, the gradually shrinking diameter increases the angular velocity and centrifugal force of the fluid, and phase separation occurs under the action of centrifugal force, and the gas, light particles or liquid gather toward the center of the cylinder and move toward the top of the cyclone, Flow out from the top, while heavy particles and liquid flow out through the...

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Abstract

The invention discloses a formation fluid separation, analysis and evaluation method, which comprises the following steps: 1) three-phase separation; 2) hydrocarbon gas collection and analysis; 3) cuttings data collection and analysis; 4) comprehensive interpretation and evaluation; Effective separation of hydrocarbon gas, drilling fluid and carrying cuttings in drilling fluid, and through extended analysis of its components, so as to analyze and interpret more accurately and timely, and improve the consistency rate of mud logging for oil and gas layer interpretation; realize reservoir fluid Rapid type identification and comprehensive quantitative evaluation provide a basis for exploration and development decisions such as subsequent well logging, testing and comprehensive research.

Description

technical field [0001] The invention relates to the fields of petroleum geological exploration and engineering data collection and processing, in particular to a formation fluid separation analysis and evaluation method. Background technique [0002] As an important technical means in the process of oil drilling and development, mud logging has been widely used. During the drilling process, the real-time formation fluid returns to the surface along with the drilling fluid, carrying a large amount of reservoir oil and gas information. Real-time analysis, processing and accurate interpretation and evaluation of the formation fluid are the main research goals of mud logging technology. To achieve this goal, many fluid logging techniques have been developed. The gas logging technology obtains the real oil and gas content information of the drilled rock formation by measuring and analyzing the hydrocarbon gas content carried by the drilling fluid returned to the surface. At pre...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B49/00E21B21/01
Inventor 孙合辉陶青龙李邓玥李怀玉陈玉新郭怀玉李艳王传永宋长虹李洪俊
Owner BC P INC CHINA NAT PETROLEUM CORP
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