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A Method for Identifying Interlayers in Thick Oil Layers Using Well Temperature Monitoring Data

A technology of well temperature and oil layer, applied in earth-moving drilling, wellbore/well components, construction, etc., can solve problems affecting the determination and identification of interlayers, difficult to distinguish interlayer lithology, differences in physical properties, and reservoir heterogeneity. lack of awareness

Active Publication Date: 2016-06-08
BC P INC CHINA NAT PETROLEUM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, in the case of complex development of interlayers, it is sometimes difficult to distinguish the difference in lithology and physical properties of interlayers only by cores and logging charts, resulting in insufficient understanding of reservoir heterogeneity, thus affecting the determination and identification of interlayers

Method used

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  • A Method for Identifying Interlayers in Thick Oil Layers Using Well Temperature Monitoring Data
  • A Method for Identifying Interlayers in Thick Oil Layers Using Well Temperature Monitoring Data
  • A Method for Identifying Interlayers in Thick Oil Layers Using Well Temperature Monitoring Data

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Embodiment Construction

[0021] The present invention will be described in detail below in conjunction with accompanying drawings and examples.

[0022] 1) Distributed optical fiber is used to continuously measure the temperature inside the casing of all wells in the exploration area and the temperature measurement data outside the casing of the well;

[0023] Collect all well temperature observation data in the study area, including the temperature measurement data inside the casing and the temperature measurement data outside the casing based on the continuous temperature monitoring of distributed optical fiber. Well temperature observation wells are usually unevenly distributed in the study area. There are two systems for temperature measurement in well temperature observation wells, one is the external temperature measurement system that bundles the temperature optical fiber outside the casing; the other is the in-pipe temperature measurement system that places the temperature optical fiber inside...

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Abstract

The invention discloses a method for identifying an inner interlayer by utilizing well temperature monitoring data. Temperature inside and outside a well casing pipe is continuously measured through optical fibers, a data table and a changing chart changing with depth are formed according to a time monitoring sequence and the inner interlayer of an oil layer is identified and confirmed. The method for identifying the inner interlayer by utilizing the well temperature monitoring data has the advantages of enabling a thermophysical performance character of the interlayer layer to be considered, enabling a storage layer to be comprehensively and correctively identified in multi-angle, enabling the interlayer to be positioned rapidly and accurately and being benefited to reasonably set reasonable oil deposit exploitation policies meanwhile.

Description

technical field [0001] The invention relates to the technical field of petroleum development, in particular to a method for identifying interlayers in oil layers by using well temperature monitoring data. Background technique [0002] In petroleum development, interlayers in oil layers play a role in blocking the vertical fluid migration because of their extremely poor permeability. The isolation and blocking effect of interlayers in thick oil layers changes the distribution of fluids and increases the difficulty of rational production of reserves. Therefore, identifying and determining interlayers in thick oil layers has important production significance. [0003] The determination of interlayers is usually based on core data and well logging data. Through core observation and description, the physical properties, electrical properties, void structure, microscopic heterogeneity and other characteristics of different lithological compositions under different genetic condit...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B47/07E21B49/00
Inventor 张枫蔡银涛曹肖萌
Owner BC P INC CHINA NAT PETROLEUM CORP
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