塔里木盆地深层岩溶缝洞型储层三维雕刻“五步法”定量描述技术研究与应用

doi:10.11720/wtyht.2020.0055

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Abstract

In recent years,the field of carbonate rocks of Tarim basin has gained rich oil and gas,especially Ordovician karst cave reservoir resource in deep seam of northern basin.For the purpose of accurate cognition,evaluation and management of the reservoirs,the application of geophysical exploration methods to fine characterization of reservoir and accurate quantitative description of production and reserves is very important.Previous quantitative description of reservoir and karst seam holes is mainly based on two-dimensional (plane) category.In this paper,the authors introduce the key description method based on high precision acquisition of 3D seismic data,drilling data and production performance data,activity union,properties characterization of seismic facies,and use phase inversion to determine the reservoir as well as porosity relation to establish geological and seismic bridge,eventually carving three-dimensional category in three dimensions to describe and quantify geological body.This method can effectively characterize and obtain the geometric shape and effective volume value of the three types of reservoir spaces in karst slotted reservoirs,and achieve accurate quantitative description of such reservoirs.At present,this technique has been applied to the establishment of quantitative description standard and the compilation of reserve calculation scheme of carbonate fissure and cave reservoirs in the depth of Tarim basin,in the hope of realizing the progress of quantitative description technology of carbonate karst fissure and cave reservoirs.

Key words： Tarim basin karst fractured and cavernous reservoir three-dimensional carving quantitative description calculation of reserves

Received: 19 January 2020 Published: 24 June 2020

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	Li-Jun GAO
	Zong-Jie LI
	Hai-Ying LI
	Hong WANG
	Chao HUANG

Cite this article:

Li-Jun GAO,Zong-Jie LI,Hai-Ying LI, et al. The deep karst fissure and cavern reservoir in Tarim basin carved in three dimensions:Research and application of "five-step method" quantitative description technology[J]. Geophysical and Geochemical Exploration, 2020, 44(3): 691-697.

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https://www.wutanyuhuatan.com/EN/10.11720/wtyht.2020.0055 OR https://www.wutanyuhuatan.com/EN/Y2020/V44/I3/691

Typical core photographs of Ordovician karst fractured and cavernous reservoir in Tahe oilfield
a—cave;b—solution pore;c—crack

Columnar chart of ordovician in Carboniferous covered area of northern Tarim

Typical seismic time migration section of Ordovician in Tahe oilfield

Typical seismic facies profiles of karst fractured and cavernous reservoirs in northern Tarim
a—beaded phase;b—mixed and disorderly phase;c—crack phase

Three-dimensional engraving of different types of seismic facies in northern tarim
a—three-dimensional sculpture of beaded phase;b—three-dimensional sculpture of mixed and disorderly phase;c—three-dimensional sculpture of crack phase

Lower limit standard of effective thickness of cave reservoir in deep limestone reservoir of Tarim Basin

Carving map of deep karst fissure and cavern reservoir classification in Tarim Basin

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