Focusing detection device of lateral logging instrument
By designing a focus detection device for the lateral logging instrument, the resistance network is used to simulate the contrast between the underground mud and formation resistivity, the problem that traditional lateral test boxes cannot detect the focus capability of the logging instrument is solved, and the detection of the focus capability of the logging instrument and the accuracy of the electronic circuit is realized, and the detection and debugging efficiency are improved.
Patent Information
- Application Number
- CN202311707879.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-12
- Publication Date
- 2025-06-13
AI Technical Summary
Traditional lateral test boxes in the prior art cannot detect the focusing ability of the lateral logger, which limits the detection and commissioning of the logger in the laboratory and in the field.
A lateral logging instrument focusing detection device is designed, which connects the formation resistivity adjustment switch and the mud resistivity adjustment switch through a resistive network to simulate the contrast between the downhole mud and the formation resistivity, thereby detecting the focus capability of the logging instrument.
The detection of the focus capability of the lateral logging instrument and the linearity and accuracy of the electronic circuit of the logging instrument are realized, which improves the detection and commissioning efficiency of R&D engineers in the laboratory and in the field.
Smart Images
Figure CN120143300A_ABST
Abstract
Description
Technical Field
[0001] The present invention belongs to the technical field of oil logging, and relates to a focusing detection device for a lateral logging tool. Background Art
[0002] The focusing ability of a lateral logging tool is a key ability for the lateral logging tool to obtain accurate data in a high-contrast formation environment. Currently, there is no detection device for the focusing ability of a lateral logging tool on the market. The traditional lateral test box can only detect the linearity of the electronic circuit of the lateral logging tool on the ground and cannot detect the focusing ability of the logging tool, resulting in the inability of R & D engineers to detect and debug the logging tool in the laboratory and in the field, which affects work efficiency and R & D progress. Summary of the Invention
[0003] The purpose of the present invention is to solve the problem in the prior art that the traditional lateral test box can only detect the linearity of the electronic circuit of the lateral logging tool on the ground and cannot detect the focusing ability of the logging tool, and to provide a focusing detection device for a lateral logging tool.
[0004] To achieve the above purpose, the present invention adopts the following technical solutions:
[0005] A focusing detection device for a lateral logging tool, comprising: a mud resistivity adjustment switch, a formation resistivity adjustment switch, a mud resistivity range resistance network, a formation resistivity range resistance network, a resistance network, and an electrode array cable interface;
[0006] The resistance network is connected to the formation resistivity adjustment switch and the mud resistivity adjustment switch; the mud resistivity adjustment switch is externally connected to the mud resistivity range resistance network; the formation resistivity adjustment switch is externally connected to the formation resistivity range resistance network; the resistance network is externally connected to the electrode array cable interface; the motor array cable interface is externally connected to a cable.
[0007] A further improvement of the present invention lies in:
[0008] Further, the resistance network includes a plurality of electrodes, and the electrodes are all connected to the electrode array cable interface.
[0009] Further, the resistance network includes electrode 1, electrode 2, electrode 3, electrode 4, electrode 5, electrode 6, electrode N, and several resistors; one end of resistor R1, one end of resistor R6, one end of resistor R7, one end of resistor R8, one end of resistor R9, and one end of resistor R10 are commonly connected to electrode 1; the other end of resistor R1, one end of resistor R2, one end of resistor R11, one end of resistor R12, one end of resistor R13, and one end of resistor R14 are commonly connected to electrode 2; the other end of resistor R2, the other end of resistor R6, one end of resistor R3, one end of resistor R15, one end of resistor R16, and one end of resistor R17 are commonly connected to electrode 3; the other end of resistor R3, one end of resistor R4, the other end of resistor R7, the other end of resistor R11, one end of resistor R18, and one end of resistor R19 are commonly connected to electrode 4; the other end of resistor R4, one end of resistor R5, the other end of resistor R8, the other end of resistor R12, the other end of resistor R15, and one end of resistor R20 are commonly connected to electrode 5; the other end of resistor R5, one end of resistor RN, the other end of resistor R9, the other end of resistor R13, the other end of resistor R16, and the other end of resistor R18 are commonly connected to electrode 6; the other end of resistor RN, the other end of resistor R10, the other end of resistor R14, the other end of resistor R17, the other end of resistor R19, and the other end of resistor R20 are commonly connected to electrode N.
[0010] Further, the resistance values of the resistors in the resistance network are the same.
[0011] Further, the mud resistivity adjustment switch is connected to electrode 1; the formation resistivity adjustment switch is connected to electrode N.
[0012] Further, both the mud resistivity adjustment switch and the formation resistivity adjustment switch include N gears, and each gear corresponds to a different resistance value.
[0013] Further, the multiples of the mud resistivity adjustment switch are 0.01, 0.02, 0.05, 0.1, 0.2, 0.5, 1, 2, 5, 10, and 50 times.
[0014] Further, the multiples of the mud resistivity adjustment switch are 0.2, 0.5, 1, 10, 20, 100, 1k, 5k, 10k, 40k, and 80K times.
[0015] Compared with the prior art, the present invention has the following beneficial effects:
[0016] The present invention connects a formation resistivity adjustment switch and a mud resistivity adjustment switch through a resistance network; the mud resistivity adjustment switch is externally connected to a mud resistivity range resistance network; the formation resistivity adjustment switch is externally connected to a formation resistivity range resistance network; by adjusting the mud resistivity adjustment switch and the formation resistivity adjustment switch, the present invention can simulate the contrast of downhole mud and formation resistivity, and can detect the focusing ability of a laterolog tool in a laboratory or in the field, and can also detect the linearity and accuracy of the electronic circuit of the logging tool; it is convenient for R & D engineers to detect and debug the laterolog tool in the laboratory and in the field, and to discover and solve problems in advance. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for use in the embodiments. It should be understood that the following drawings only show some embodiments of the present invention, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.
[0018] Figure 1 is the front view of the focusing detection device for the laterolog tool of the present invention;
[0019] Figure 2 is the schematic diagram of the principle of the focusing detection device for the laterolog tool of the present invention;
[0020] Figure 3 is the circuit schematic diagram of the resistance network Z;
[0021] Figure 4 is the circuit schematic diagram of the mud resistivity range resistance network;
[0022] Figure 5 is the circuit schematic diagram of the formation resistivity range resistance network;
[0023] Figure 6 is the application schematic diagram of the focusing detection device for the laterolog tool. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0024] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Usually, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.
[0025] Accordingly, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.
[0026] It should be noted that like reference numerals and letters denote like items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.
[0027] In the description of the embodiments of the present invention, it should be noted that if terms such as "upper", "lower", "horizontal", "inner", etc. are used to indicate the orientation or positional relationship, it is based on the orientation or positional relationship shown in the drawings or the orientation or positional relationship in which the product of the invention is usually placed during use. This is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present invention. In addition, terms such as "first", "second", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.
[0028] In addition, if the term "horizontal" appears, it does not mean that the component is required to be absolutely horizontal, but it can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but it can be slightly inclined.
[0029] In the description of the embodiments of the present invention, it should also be noted that unless otherwise clearly specified and limited, if terms such as "set", "installed", "connected", "connected to" are used, they should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.
[0030] The present invention will be further described in detail below with reference to the accompanying drawings:
[0031] See Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5 , the present invention discloses a focusing detection device for a lateral logging tool, including: a mud resistivity adjustment switch, a formation resistivity adjustment switch, a mud resistivity range resistance network, a formation resistivity range resistance network, a resistance network, and an electrode array cable interface;
[0032] The resistance network connects the formation resistivity adjustment switch and the mud resistivity adjustment switch; the mud resistivity adjustment switch is externally connected to the mud resistivity range resistance network; the formation resistivity adjustment switch is externally connected to the formation resistivity range resistance network; the resistance network is externally connected to the electrode array cable interface; the electrode array cable interface is externally connected to a cable. The resistance network includes several electrodes, and all the electrodes are connected to the electrode array cable interface. The resistance network includes electrode 1, electrode 2, electrode 3, electrode 4, electrode 5, electrode 6, electrode N, and several resistors; one end of resistor R1, one end of resistor R6, one end of resistor R7, one end of resistor R8, one end of resistor R9, and one end of resistor R10 are commonly connected to electrode 1; the other end of resistor R1, one end of resistor R2, one end of resistor R11, one end of resistor R12, one end of resistor R13, and one end of resistor R14 are commonly connected to electrode 2; the other end of resistor R2, the other end of resistor R6, one end of resistor R3, one end of resistor R15, one end of resistor R16, and one end of resistor R17 are commonly connected to electrode 3; the other end of resistor R3, one end of resistor R4, the other end of resistor R7, the other end of resistor R11, one end of resistor R18, and one end of resistor R19 are commonly connected to electrode 4; the other end of resistor R4, one end of resistor R5, the other end of resistor R8, the other end of resistor R12, the other end of resistor R15, and one end of resistor R20 are commonly connected to electrode 5; the other end of resistor R5, one end of resistor RN, the other end of resistor R9, the other end of resistor R13, the other end of resistor R16, and the other end of resistor R18 are commonly connected to electrode 6; the other end of resistor RN, the other end of resistor R10, the other end of resistor R14, the other end of resistor R17, the other end of resistor R19, and the other end of resistor R20 are commonly connected to electrode N.
[0033] The resistance values of the resistors in the resistance network are the same. The mud resistivity adjustment switch is connected to electrode 1; the formation resistivity adjustment switch is connected to electrode N. Both the mud resistivity adjustment switch and the formation resistivity adjustment switch include N gears, and each gear corresponds to a different resistance value. The multiples of the mud resistivity adjustment switch are 0.01, 0.02, 0.05, 0.1, 0.2, 0.5, 1, 2, 5, 10, and 50 times. The multiples of the formation resistivity adjustment switch are 0.2, 0.5, 1, 10, 20, 100, 1k, 5k, 10k, 40k, and 80K times.
[0034] As Figure 6 shown, a focusing detection device for a laterolog tool, and the specific application of the detection device is as follows: The electrode array cable interface of the detection device is connected to the electrode array of the laterolog tool through a cable. The upper end of the electronic circuit of the laterolog tool is connected to the test computer through a cable.
[0035] After the logging tool is powered on, first test the computer settings to perform internal calibration on the laterolog tool. After determining that the electronic circuit is working properly, set the instrument status to the surface working state.
[0036] Adjust the formation resistivity adjustment switch to set the formation resistivity to be measured, and adjust the mud resistivity adjustment switch to set the mud resistivity. Set the mud resistivity from large to small to change the contrast between the mud and formation resistivities, and observe whether the resistivity values measured by the computer match the values of the detection device.
[0037] Under the condition of a high contrast between the mud and formation resistivities, if the test data is the same, it is determined that the logging tool has strong focusing ability. Otherwise, the focusing of the logging needs to be debugged.
[0038] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention can have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.
Claims
1. A focusing detection device for a lateral logging tool, characterized in that, it includes: a mud resistivity adjustment switch, a formation resistivity adjustment switch, a mud resistivity range resistance network, a formation resistivity range resistance network, a resistance network, and an electrode array cable interface; the resistance network is connected to the formation resistivity adjustment switch and the mud resistivity adjustment switch; the mud resistivity adjustment switch is externally connected to the mud resistivity range resistance network; the formation resistivity adjustment switch is externally connected to the formation resistivity range resistance network; the resistance network is externally connected to the electrode array cable interface; the motor system cable interface is externally connected to a cable.
2. The focusing detection device for a lateral logging tool according to claim 1, characterized in that, the resistance network includes a number of electrodes, and the electrodes are all connected to the electrode array cable interface.
3. The focusing detection device for a lateral logging tool according to claim 2, characterized in that, the resistance network includes electrode 1, electrode 2, electrode 3, electrode 4, electrode 5, electrode 6, electrode N, and a number of resistors; one end of resistor R1, one end of resistor R6, one end of resistor R7, one end of resistor R8, one end of resistor R9, and one end of resistor R10 are commonly connected to electrode 1; the other end of resistor R1, one end of resistor R2, one end of resistor R11, one end of resistor R12, one end of resistor R13, one end of resistor R14 are commonly connected to electrode 2; the other end of resistor R2, the other end of resistor R6, one end of resistor R3, one end of resistor R15, one end of resistor R16, and one end of resistor R17 are commonly connected to electrode 3; the other end of resistor R3, one end of resistor R4, the other end of resistor R7, the other end of resistor R11, one end of resistor R18, and one end of resistor R19 are commonly connected to electrode 4; the other end of resistor R4, one end of resistor R5, the other end of resistor R8, the other end of resistor R12, the other end of resistor R15, and one end of resistor R20 are commonly connected to electrode 5; the other end of resistor R5, one end of resistor RN, the other end of resistor R9, the other end of resistor R13, the other end of resistor R16, and the other end of resistor R18 are commonly connected to electrode 6; the other end of resistor RN, the other end of resistor R10, the other end of resistor R14, the other end of resistor R17, the other end of resistor R19, and the other end of resistor R20 are commonly connected to electrode N.
4. The focusing detection device for a lateral logging tool according to claim 3, characterized in that, the resistance values of the resistors in the resistance network are the same.
5. The focusing detection device for a lateral logging tool according to claim 4, characterized in that, the mud resistivity adjustment switch is connected to electrode 1; the formation resistivity adjustment switch is connected to electrode N.
6. The focusing detection device for a lateral logging tool according to claim 5, characterized in that, both the mud resistivity adjustment switch and the formation resistivity adjustment switch include N gears, and each gear corresponds to a different resistance value.
7. The focusing detection device for a lateral logging tool according to claim 6, characterized in that, The multiples of the mud resistivity adjustment switch are 0.01, 0.02, 0.05, 0.1, 0.2, 0.5, 1, 2, 5, 10, and 50 times.
8. The focusing detection device of the laterolog instrument according to claim 7, characterized in that, the multiples of the mud resistivity adjustment switch are 0.2, 0.5, 1, 10, 20, 100, 1k, 5k, 10k, 40k, and 80K times.