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Shale bedding identification method

An identification method and shale technology, applied in the field of shale bedding identification, can solve the problems of fine black shale, inability to identify laminae and laminae groups, and samples are easily weathered, and achieve the effect of improving identification accuracy.

Active Publication Date: 2018-12-07
PETROCHINA CO LTD
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Problems solved by technology

Based on the first method, due to the fine grain size of black shale and the susceptibility of samples to weathering, the laminae and lamina groups cannot be identified by naked eyes, so the superimposition relationship between laminae, lamina groups and layers cannot be clarified; based on In the second method, due to the limitations of the field of view and sampling representativeness, it is difficult to solve problems such as layer identification, macroscopic morphology and superposition relationship of laminae and lamina groups, lateral distribution and longitudinal evolution of each lamina and lamina groups

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Embodiment Construction

[0047] In order to enable those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described The embodiments are only some of the embodiments of the present application, but not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application. For example, in one description, forming the second component over the first component may include an embodiment in which the first component and the second component are formed in direct contact, and may also include an embodiment in which the first component and the second component are formed in indirect contact ( That is, there may be a...

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Abstract

An embodiment of the present application provides a shale bedding identification method, the method is as follows: determining the structure and the construction of an outcrop of a target interval; acquiring a rock sample penetrating longitudinally through the target interval, and forming a plurality of longitudinally and continuously-distributed first specification rock cores and a plurality of longitudinally and continuously-distributed second specification rock cores; determining the structure and the construction of each layer of the first specification rock cores and determining the structure and the construction of each layer of the second specification rock cores; and combining the structure and the construction of the outcrop of the target interval, the structure and the construction of each layer of the first specification rock cores and the composition and the structure and the construction of each layer of the second specification rock cores to obtain bedding identificationresults of the target interval. The shale bedding identification method can improve shale bedding recognition accuracy.

Description

technical field [0001] The present application relates to the technical field of shale oil and gas exploration and development, in particular to a method for identifying shale bedding. Background technique [0002] Bedding is a key to interpreting the depositional conditions and evolution history of fine-grained sediments. It determines the microstructure and reservoir performance of shale target intervals, and affects the volumetric fracture propagation law and fracturing effect of horizontal wells. The key to bedding research is to identify laminae, lamina groups and layers, determine their composition and structure, clarify their superimposed relationship, and clarify their lateral distribution and vertical evolution, so as to provide a basis for subsequent evaluation of target intervals and shale gas development. Provide support. Therefore, the study of bedding is of great significance. [0003] At present, there are mainly two kinds of bedding research methods: one is...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/24G01N23/223
CPCG01N23/223G01N33/24
Inventor 施振生董大忠梁萍萍邱振张晨晨卢斌桂婷婷
Owner PETROCHINA CO LTD
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