Synchronous experimental analysis method for oil content and fine components of shale

A synchronous experiment and experimental analysis technology, applied in the field of unconventional oil and gas exploration in oilfields, can solve the problems of lack of synchronous experimental analysis methods for oil content and fine components of shale, and achieve the effect of meeting the needs of geological experiment technology

Active Publication Date: 2020-09-01
PETROCHINA CO LTD +1
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  • Claims
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Problems solved by technology

[0004] The present invention is to overcome the problem that existing experiments in the background technology lack the synchronous experimental analysis method of oil content and fine components of mud shale, and provide a synchronous experimental analysis method of oil content and fine components of mud shale

Method used

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  • Synchronous experimental analysis method for oil content and fine components of shale
  • Synchronous experimental analysis method for oil content and fine components of shale
  • Synchronous experimental analysis method for oil content and fine components of shale

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Embodiment 1

[0060] The implementation process of the method of the present invention will be described below by taking two key exploration wells Syy1 and Gy1 in the Gulong area of ​​the Daqing exploration area as examples, and carrying out simultaneous experimental analysis of oil content and fine components of mud shale.

[0061] ,Research Background

[0062]Two key exploration wells, Syy1 and Gy1, have been deployed for shale oil exploration in the Daqing exploration area. Well Syy1 is located in Qijianan, northern Songliao Basin, with a designed and completed drilling depth of 2547m. The main target layer is the Qingshankou Formation; Gy1 is located in Gulong, northern Songliao Basin. Sag, the designed and completed drilling depth is 2750m, the main target layer is the Qingshankou Formation; two wells, Syy1 and Gy1, obtained industrial oil flow of 11.9t / d and 4.8t / d through fracturing successively, showing the Qijia formation in the northern Songliao Basin. The good prospect and huge r...

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Abstract

The invention discloses a synchronous experimental analysis method for oil content and fine components of shale. A synchronous experimental analysis device for the oil content and the fine componentsof the shale is used for synchronous experimental analysis of the shale; experimental data of the oil content and fine component composition and a plurality of saturated hydrocarbon and light hydrocarbon parameters such as the carbon number range, OEP, light-weight ratio, methyl cyclohexane index, naphthenic index and the like are obtained, the purpose of evaluating the oiliness and fluidity of the shale oil reservoir is achieved by utilizing the parameters, and the requirements of shale oil exploration and development on geological experimental technologies are met. After method verification,the characteristics of different particle sizes, different placement time, different oil contents of lithofacies samples and different fine components of the shale reservoir are provided; oily and flowability characteristics of shale with different lithofacies and depths are evaluated, for example, oily green second-third-section layered shale is better than mudstone, green first-section oil shale is better than shale and tends to become better along with increase of burial depth, and an important experimental basis is provided for exploration and production of shale oil four-property evaluation, 'dessert' optimization and the like.

Description

technical field [0001] The invention relates to the technical field of unconventional oil and gas exploration in oilfields, in particular to a simultaneous experimental analysis method for oil content and fine components of mud shale. Background technique [0002] Unconventional oil and gas resources such as tight sandstone oil (tight oil for short), shale oil, tight conglomerate gas (tight gas for short), shale gas and other unconventional oil and gas resources have been developed on a large scale, pushing the global oil industry into a new stage where both conventional and unconventional oil and gas resources are equally important. stage. The evaluation of the "four properties" (reservoir property, oiliness, fluidity, and compressibility) of shale reservoirs is an important research content and basis for the exploration and development of shale oil, and the evaluation of oiliness and fluidity is the basis for exploration and development. The key point is that it is of gre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/02G01N30/06G01N30/12G01N30/20
CPCG01N30/02G01N30/06G01N30/12G01N30/20G01N2030/047G01N2030/125G01N2030/201
Inventor 张居和冯子辉霍秋立曾花森张博为鄢仁勤冯军张琨
Owner PETROCHINA CO LTD
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