Resistivity simulation unit body and manufacturing method thereof
A technology for simulating units and resistivity, applied in earthwork drilling, wellbore/well components, instruments, etc., can solve the problems of missing, high cost, time-consuming and labor-intensive, etc., and achieve the effect of simple structure and easy relative positioning
Active Publication Date: 2019-07-16
CNPC GREATWALL DRILLING ENG
View PDF10 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0004] However, in the prior art, when calibrating and verifying the developed downhole measurement instruments to detect the reliability and consistency of these instruments, or when providing parameter basis for the preparation of corresponding interpretation software for the downhole measurement data of the instrument, it is necessary to to the actual wellbore site
Not only is this work costly and time-consuming, but the calibration, calibration, and provided parameter basis may not be ideal in terms of accuracy and consistency, and it may not even be possible to find an appropriate wellbore available to perform the work
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0036] see figure 1 According to a preferred embodiment of the present invention, the surface verification device for simulating the resistivity of downhole formations includes a circumferentially closed outer wellbore 10 (for example, a closed steel pressure-bearing barrel) and a downhole formation arranged radially inside the outer wellbore 10 Simulation body 20. Preferably, a centralizer 15 is provided between the outer wellbore 10 and the downhole formation simulation main body 20, so as to fix the downhole formation simulation main body 20 and the outer wellbore 10 together properly (usually on the same central axis), so as to avoid correction on the surface. During the use and hoisting of the test device, the whole or part of the downhole formation simulation main body 20 is displaced and / or deformed. As is well known to those skilled in the art, a plurality of centralizers 15 may preferably be arranged along the axial direction of the outer wellbore 10 . Each centrali...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
| Property | Measurement | Unit |
|---|---|---|
| diameter | aaaaa | aaaaa |
| depth | aaaaa | aaaaa |
Login to View More
Abstract
The invention relates to a resistivity simulation unit body and a manufacturing method thereof. Particularly, the resistivity simulation unit body used for simulating the resistivity of underground target strata is provided, and the unit body is manufactured through cement, one or a plurality of conductive substances and water. The manufacturing method of the resistivity simulation unit body is further provided. The method includes the following steps: a. providing cement, one or the plurality of conductive substances and the water; b. stirring the conductive substances, the cement and the water to obtain a mixed material; c. molding the mixed material to obtain a blank body; d. arranging the molded blank body into a blank device with the corresponding shape to conduct shape protection maintenance for a period; e. drying the blank body after the shape protection maintenance. The resistivity simulation unit body can accurately simulate the corresponding resistivity of underground different target strata, and a plurality of resistivity simulation unit bodies can be combined to simulate different resistivity of the whole underground strata of any depth.
Description
technical field [0001] The invention relates to geophysical detection technology, in particular to resistivity logging technology. Background technique [0002] In the process of geological drilling, different geophysical detection techniques can be used for formations with different depths and different lithologies downhole. Among various geophysical detection technologies, measuring the resistivity of the target formation is one of the important means to distinguish different lithologies and discover underground oil, gas and water resources. [0003] With the continuous improvement of logging technology, a batch of downhole measurement instruments with large amount of information and small detection radius, such as downhole acoustic and electric imaging instruments, downhole micro-resistivity scanning instruments, etc., have been successfully developed. These downhole measuring instruments have high resolution and provide a large amount of downhole information, which prov...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): E21B49/00G01V13/00
Inventor 刘越伍东黄涛刘策徐凌堂于洋吴翔
Owner CNPC GREATWALL DRILLING ENG