An induction logging fracture simulation device
An induction logging and simulation device technology, applied in the field of logging physical simulation, can solve the problems of poor fit, large fracture width, and inability to perform quantitative evaluation of induction logging fracture parameters, and achieve the effect of easy implementation and simple structure
Active Publication Date: 2021-06-11
CHINA PETROLEUM & CHEM CORP +1
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At present, there are few researches and designs on simulation devices for the influence of fracture parameters on induction logging, only in the "Test Model for Formation Fracture Detection by Coplanar Induction Logging Tool" (Liu Dejun, Experimental model for detection of formation fracture by coplanar induction logging tool. Petroleum Instrument J, 1997, 11 (2) 31 ~ 35.) A set of physical simulation devices using a miniature coil system is proposed in the article
The device uses a 5cm wide polyvinyl chloride container to fill fluid conduction to simulate the conductance of cracks, resulting in too large crack width (0.5 meters in equal proportion calculation, and tens of microns in actual underground cracks), which is not in good agreement with the actual situation, and can only respond to cracks Qualitative simulation is not possible for quantitative evaluation of induction logging fracture parameters
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[0024] The present invention will be described in more detail below with reference to the accompanying drawings. Although preferred embodiments of the invention are shown in the drawings, it should be understood that the invention may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
[0025] The following reference figure 1 An induction logging fracture simulation device according to an exemplary embodiment of the present invention is described in detail. The simulation device includes one or more fracture simulation parts 3 , an induction logging tool 2 , and a signal acquisition system 6 .
[0026] The fracture simulation part 3 has a laminated structure, and has a central hole 4 for simulating a wellbore at its center, and the radius of the central hole 4 is th...
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Disclosed is an induction logging fracture simulation device, which includes one or more fracture simulation parts, an induction logging instrument, and a signal acquisition system. The fracture simulation part includes a plurality of overlapping intermediate layers and saline solution layers, covering layers covering both sides and a central hole in the center, and the saline solution constituting the saline solution layer is configured according to the salinity of formation fractures, The intermediate layer is wetted by the salt solution, and the radius of the central hole is the radius of the borehole to be simulated; the induction logging instrument is arranged horizontally and passes through the central hole of the one or more fracture simulation parts; the The signal acquisition system collects the response data of the induction logging tool. The invention solves the problem of quantitative simulation measurement of the response characteristics of induction logging of different fracture parameters in the prior art.
Description
technical field [0001] The invention relates to the field of physical simulation of well logging, and more particularly relates to an induction logging fracture simulation device. Background technique [0002] Fracture parameter evaluation is an important problem in well log interpretation. Fractures are not only important oil and gas storage spaces but also important migration pathways for low-permeability reservoirs. Whether fractures are developed or not is directly related to oil and gas productivity. With the deepening of oil and gas exploration and development, the logging evaluation of fractured reservoirs has attracted more and more attention. Resistivity logging is an effective method for conventional logging to evaluate fractures. [0003] In sandstone with relatively low background resistivity, resistivity logging in shale reservoirs is mostly induction logging. At present, there are few researches and designs on simulation devices for the influence of fractur...
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IPC IPC(8): E21B43/26E21B47/00
CPCE21B43/26E21B47/00
Inventor 南泽宇李军刘志远张军苏俊磊武清钊
Owner CHINA PETROLEUM & CHEM CORP