An electromagnetic earth lens detection method and detection device
An electromagnetic and lens technology, applied in measuring devices, electric/magnetic detection for well logging records, electric/magnetic exploration, etc., can solve problems such as undeveloped research
Active Publication Date: 2021-04-06
HANGZHOU SUMAY TECH
View PDF6 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
In recent years, some well-known oil companies and universities in the world have carried out relevant research and made some progress, while my country has not yet carried out research in this field
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
[0039] In order to make the above and other objects, features and advantages of the present invention more comprehensible, preferred embodiments are listed below and described in detail in conjunction with the accompanying drawings.
[0040] like figure 1 Shown is the schematic diagram of the electromagnetic earth lens detection device embodiment of the present invention, comprises:
[0041] The electromagnetic excitation source is used to excite the secondary induced electromagnetic field of underground formations or electrical anomalies by applying low-frequency alternating current. It specifically includes a current injection device 1 and a metal sleeve 2. The current injection device 1 is used to generate and inject an excitation current to the metal sleeve 2. One end of the metal sleeve 2 is connected to the current injection device 1 to receive the excitation current, and the other end is used as an excitation source 3. , located in the downhole formation 11 and pointin...
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
Login to View More Abstract
The invention relates to an electromagnetic geodetic lens detection method and a detection device, which are used for the detection of an electrical abnormal body in a downhole, including: an electromagnetic excitation source, which uses a casing in the well to apply low-frequency alternating current as the excitation source, and is used to excite the electrical abnormal body for a second time. Induction electromagnetic field; electromagnetic data acquisition probes, a certain number of array electromagnetic measurement probes are arranged on the ground to obtain three-component electric field and magnetic field data, which are used for identification and fine description of underground electrical anomalies; electrical anomalies lens imaging device and method, The geophysical inversion method is used to invert and image the collected electromagnetic response data, and invert to obtain the conductivity parameters and geometric parameters of the downhole electrical anomalies. The electromagnetic geodetic lens detection method and device proposed by the present invention are based on electromagnetic theory, and can realize effective identification of underground electrical anomalies and refined lens imaging.
Description
technical field [0001] The invention relates to the technical field of oil field development, in particular to an electromagnetic earth lens detection method and a detection device. Background technique [0002] In 2017, my country's dependence on foreign oil reached 67.4%. In order to improve the ability to guarantee oil and gas resources, my country has implemented two strategic measures in the field of oil and gas exploration and development in recent years: one is to stabilize and increase production in old oil fields, and the other is to vigorously develop unconventional oil and gas. For mature oilfields with stable and increasing production, water flooding is still the main method; for unconventional oil and gas reservoirs such as low porosity and low permeability, tight sandstone and shale, hydraulic fracturing has become the main technology for their effective development. The monitoring and evaluation of water flooding and fracturing effects is of great significanc...
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): G01V3/26G01V3/38
CPCG01V3/26G01V3/38
Inventor 张中庆柳杰
Owner HANGZHOU SUMAY TECH