A small size geological parameter measuring short circuit
By integrating gamma sensors through arc-shaped slots on the outer wall of the azimuth gamma frame, the problem of traditional tools being far from the drill bit was solved, enabling accurate positioning of sandstone layers and improving drilling accuracy.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- DAQING DRILLING ENGINEERING CO LTD
- Filing Date
- 2024-11-27
- Publication Date
- 2026-05-29
AI Technical Summary
Traditional natural gamma logging tools are installed on the upper part of the drill string, far from the drill bit, and do not have edge detection capabilities, making it difficult to ensure that the guide head accurately travels along the sandstone layer.
Design a small-sized geological parameter measurement short circuit, including an azimuth gamma frame and a gamma sensor. By setting an arc-shaped slot on the outer wall of the azimuth gamma frame as a mounting chamber, the gamma sensor, azimuth gamma sensor, main control board, power board and magnetometer are integrated. The space is made reasonable, the arrangement is compact, the overall size is reduced, and it can be hung near the drill bit for edge probing function.
It enables accurate positioning and identification of sandstone layers, improves sandstone drilling rate, timely detection of drilling trajectory deviations, and improves drilling accuracy and efficiency.
Smart Images
Figure CN122106558A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of downhole testing instruments for oil drilling, and in particular to a small-sized geological parameter measurement short circuit. Background Technology
[0002] In ultrathin reservoir geological steering, traditional natural gamma logging tools have certain limitations. These tools are usually installed at the top of the drill string, far from the drill bit, and do not have edge detection capabilities, making it difficult to ensure that the steering head always travels accurately along the sandstone layer. In this context, the azimuth gamma imaging logging tool demonstrates its unique advantages. Due to its closer proximity to the drill bit and azimuth characteristics, it can achieve natural gamma imaging of the formation orientation, thereby enabling precise geological guidance. Azimuth gamma imaging logging tools can provide real-time azimuth natural gamma imaging data of the formation. This data can not only help geologists and drilling engineers understand the formation characteristics at the current drill bit location, but also guide the drill bit's drilling direction in real time. This real-time guidance capability greatly improves drilling accuracy and efficiency, and reduces the geological risks that may be encountered during the drilling process. Summary of the Invention
[0003] (a) Technical problems to be solved This invention provides a small-sized geological parameter measurement short circuit to overcome the problems of existing technologies where natural gamma logging tools are installed at the top of the drill string, far from the drill bit, and lack edge detection capabilities, making it difficult to ensure that the guide head always travels accurately along the sandstone layer.
[0004] (II) Technical Solution To achieve the above objectives, the present invention provides a small-sized geological parameter measurement short circuit, comprising: an azimuth gamma frame and a gamma sensor; The azimuth gamma frame is a hollow cylindrical structure, and the outer wall of the azimuth gamma frame is provided with several arc-shaped slots, which are placement chambers. The several placement compartments include: a gamma sensor placement compartment, a circuit board placement compartment, an orientation gamma sensor placement compartment, a main control board placement compartment, a power board placement compartment, and a magnetometer placement compartment. The gamma sensor placement compartment is equipped with a gamma sensor, and the outer wall of the gamma sensor is equipped with a gamma sensor cover. A shielding layer is provided between the gamma sensor and the gamma frame. The gamma sensor cover is fixed to the outer wall of the azimuth gamma frame by several fastening bolts; The main control board is installed in the main control board placement compartment. The outer wall of the main control board is provided with a main control board cover. The outer wall of the azimuth gamma skeleton is provided with a data reading port. The outer wall of the data reading port is provided with a data reading port cover. The gamma sensor placement chamber is symmetrically provided with azimuth gamma sensor placement chambers. Each azimuth gamma sensor placement chamber contains an azimuth gamma sensor. A main control board wire groove is provided on one side of each azimuth gamma sensor placement chamber. The main control board wire groove is connected to the azimuth gamma sensor and the gamma sensor respectively. The main control board cable trays are connected to several placement compartments.
[0005] Preferably, the outer wall of the azimuth gamma skeleton is provided with a plurality of wear-resistant rings evenly distributed axially, and the wear-resistant rings are composed of a plurality of rectangular wear-resistant blocks, which are evenly distributed circumferentially on the outer wall of the gamma skeleton.
[0006] Preferably, the shielding layer is made of tungsten alloy and can block 80%-90% of gamma rays, thereby achieving gamma zoning.
[0007] Preferably, it also includes a plurality of damping rings, which are evenly distributed on both outer walls of the gamma sensor to reduce vibration between the gamma sensor and the gamma frame.
[0008] Preferably, it further includes two conductive rings, the two conductive rings being a first conductive ring and a second conductive ring, the two ends of the azimuth gamma frame having grooves, the first conductive ring being disposed in the groove at the left end, and the second conductive ring being disposed in the groove at the right end, the outer wall of the left end of the azimuth gamma frame having threads, and the inner wall of the right end having threads.
[0009] Preferably, the circuit board placement compartment is located on one side of the gamma sensor placement compartment. The circuit board placement compartment is equipped with a signal conversion board, which is used to convert FSK signals into RS232 signals. The lower end of the circuit board placement compartment is equipped with a wire groove, which is connected to the wire groove of the main control board.
[0010] Preferably, the main control board mounting compartment, the power board mounting compartment, and the magnetometer mounting compartment are evenly arranged circumferentially on the right outer wall of the azimuth gamma frame, and the bottoms of the main control board mounting compartment, the power board mounting compartment, and the magnetometer mounting compartment are connected by oblique circular holes. The power board mounting compartment contains a power board and an inductor, and the magnetometer mounting compartment contains a magnetometer; The magnetometer mounting compartment and the power board mounting compartment are provided with through holes that penetrate the circuit board mounting compartment. The right end of the azimuth gamma frame is provided with a through hole that penetrates the power board mounting compartment, and the left end of the azimuth gamma frame is provided with a through hole that penetrates the gamma sensor mounting compartment.
[0011] Preferably, the main control board slot is a rectangular slot located in the azimuth gamma frame, and the main control board slot is used to connect the gamma sensor and the azimuth gamma sensor to the main control board.
[0012] Preferably, the outer walls of the main control board, power board, and signal conversion board are all covered with silicone potting compound.
[0013] Preferably, the silicone potting compound has a raised structure on all four sides and the top, which can protect the circuit board while preventing the soft compound from expanding and squeezing the circuit board.
[0014] Preferably, the conductive ring consists of two parts: an inner ring and an outer ring. The inner ring is a copper conductive ring, and the outer ring is made of rubber. The outer ring has a hollow support foot, one end of which is connected to the inner ring and the other end is inserted into the azimuth gamma frame.
[0015] (III) Beneficial Effects This invention provides a small-sized geological parameter measurement short circuit. It integrates a gamma sensor, an azimuth gamma sensor, a main control board, a power board, and a magnetometer by using several arc-shaped slots on the outer wall of an azimuth gamma sensor housing. This provides comprehensive geological parameter measurements. It makes efficient use of space, allowing the sensors and circuit boards to be compactly arranged, reducing the overall size. This small-sized geological parameter measurement short circuit can be attached near the drill bit to achieve edge detection, helping to identify and locate sandstone layers, improving sandstone drilling success rate, and promptly detecting deviations in the drilling trajectory, thereby enabling timely deviation correction operations. Attached Figure Description
[0016] Figure 1 This diagram illustrates a small-sized geological parameter measurement short-circuit structure according to the present invention. Figure 2 Show Figure 1 Schematic diagram of the cross-sectional structure of the middle EE; Figure 3 This diagram illustrates a side view of a small-sized geological parameter measurement short-circuit structure according to the present invention. Figure 4 Show Figure 1 Schematic diagram of the cross-sectional structure of DD.
[0017] The components are: 1: Azimuth gamma frame; 2: Gamma sensor; 3: Main control board mounting compartment; 4: Main control board cover; 5: Data reading port; 6: Shielding layer; 7: Azimuth gamma sensor; 8: Shock absorber ring; 9: Fastening bolt; 10: Rectangular wear-resistant block; 11: Conductive ring. Detailed Implementation
[0018] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. The technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0019] In the description of this invention, it is necessary to understand that the orientations or positional relationships indicated by terms such as "upper," "lower," "left," "right," "inner," "outer," "top," and "bottom" are based on the orientations or positional relationships shown in the accompanying drawings. They are intended only to facilitate the description of this invention and to simplify the description, and are not intended to indicate or imply that the components referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.
[0020] like Figure 1-4 As shown, the present invention provides a small-sized geological parameter measurement short circuit, including: an azimuth gamma frame 1 and a gamma sensor 2; like Figure 1-2 As shown, the azimuth gamma frame 1 is a hollow cylindrical structure. A plurality of wear-resistant rings are evenly distributed axially on the outer wall of the azimuth gamma frame 1. Each wear-resistant ring is composed of a plurality of rectangular wear-resistant blocks 10, which are evenly distributed circumferentially on the outer wall of the gamma frame 1. The wear-resistant rings ensure good wear resistance during use. The left end of the azimuth gamma frame 1 has a threaded outer wall, and the right end has a threaded inner wall. Grooves are provided at both ends of the azimuth gamma frame 1, and conductive rings 11 are embedded in these grooves. The two conductive rings 11 include a first conductive ring and a second conductive ring. The azimuth gamma frame 1 has a first conductive ring in the groove at the left end and a second conductive ring in the groove at the right end. The conductive ring 11 consists of two parts: an inner ring and an outer ring. The inner ring is a copper conductive ring, and the outer ring is fitted on the outer wall of the inner ring. The outer ring is made of rubber and has several hollow legs that are connected to the inner ring. When the conductive ring 11 is connected and installed with the azimuth gamma frame 1, the outer ring is close to the outer wall of the gamma frame 1, and the inner ring faces outward. The inner ring of the conductive ring 11 is used for data communication, and the outer ring prevents the outer wall of the azimuth gamma frame 1 from becoming electrified.
[0021] The outer wall of the azimuth gamma frame 1 has several arc-shaped slots, which serve as mounting compartments for various sensors and circuit boards. These compartments include: a gamma sensor mounting compartment, a circuit board mounting compartment, an azimuth gamma sensor mounting compartment, a main control board mounting compartment 3, a power board mounting compartment, and a magnetometer mounting compartment. The gamma sensor mounting compartment and the azimuth gamma sensor mounting compartment are located on the left outer wall of the azimuth gamma frame 1. The main control board mounting compartment 3, the power board mounting compartment, and the magnetometer mounting compartment are evenly distributed circumferentially on the right outer wall of the azimuth gamma frame 1. The gamma sensor mounting compartment contains a gamma sensor 2. The outer wall of the gamma sensor 2 is covered with a gamma sensor cover, which provides protection. A shielding layer 6, made of tungsten alloy, is provided between the gamma sensor 2 and the gamma frame 1. The shielding layer 6 can shield 80%-90% of gamma rays, thereby achieving zoned control of gamma rays and improving measurement accuracy.
[0022] like Figure 2 As shown, the gamma sensor cover is fixed to the outer wall of the azimuth gamma frame 1 by several fastening bolts 9. These fastening bolts 9 ensure a firm connection between the cover 3 and the frame 1, preventing loosening due to vibration or impact during use. The gamma sensor housing is symmetrically provided with azimuth gamma sensor housings, and the azimuth gamma sensor 7 is provided in the azimuth gamma sensor housing. Several damping rings 8 are evenly provided on both sides of the outer wall of the gamma sensor 2. The setting of the damping rings 8 not only reduces the direct contact between the gamma sensor 2 and the gamma frame 1, but also reduces the impact of vibration generated during equipment operation on the sensor, thereby improving the stability and accuracy of the measurement data. The main control board is housed in the main control board housing 3. The main control board has a main control board cover 4 on its outer wall to protect it from the influence of the external environment. The azimuth gamma frame 1 has a data reading port 5 on its outer wall for data communication with external devices. The data reading port has a data reading port cover on its outer wall. The azimuth gamma sensor housing 3 has a main control board cable tray on one side. The main control board cable tray has a passage between the azimuth gamma sensor 7 and the gamma sensor 2 to transmit the sensor data to the main control board. The main control board cable tray is connected to several housing housings to ensure unobstructed data transmission paths between the various sensors and the circuit board.
[0023] The circuit board mounting compartment is located on one side of the gamma sensor mounting compartment. The circuit board mounting compartment contains a signal conversion board, which is used to convert FSK signals into RS232 signals. The lower end of the circuit board mounting compartment has a wire groove, which is connected to the wire groove of the main control board, so that the bus passes through this mounting compartment, ensuring the smooth transmission of power and data signals. like Figure 4As shown, the bottoms of the main control board housing 3, the power board housing, and the magnetometer housing are connected by oblique circular holes, ensuring electrical connection between the housings. The power board housing contains a power board and an inductor to provide stable power to the entire system. The magnetometer housing contains a magnetometer for measuring magnetic field strength and direction. The magnetometer housing and the power board housing have through holes that penetrate the circuit board housing. The right end of the azimuth gamma frame 1 has a through hole that penetrates the power board housing, and the left end of the azimuth gamma frame 1 has a through hole that penetrates the gamma sensor housing. The main control board wire groove is a rectangular slot in the azimuth gamma frame 1, which is used to connect the gamma sensor 2 and the azimuth gamma sensor 7 to the main control board.
[0024] The outer walls of the main control board, power board, and signal conversion board are all covered with silicone potting compound. The silicone potting compound used is HASUNCAST two-component potting compound RTVS49. The silicone potting compound ensures comprehensive protection for all critical circuit boards. The silicone potting compound has high insulation, corrosion resistance, and flame retardancy. It can be used in a temperature range of -60℃ to +260℃. The silicone potting compound has a thermal conductivity of 2.0W / m·K, which can effectively dissipate heat. When applying adhesive to the main control board, power board, and signal conversion board, a hollow mold is used for injection. The inner wall of the hollow mold has steps. The main control board, power board, and signal conversion board are placed on the steps, and molten silicone potting compound is injected into the mold. This allows the silicone potting compound to cover the main control board, power board, and signal conversion board to form a block of adhesive. The sides and top of this block of adhesive have a raised structure, which can protect the circuit board while preventing the soft adhesive from expanding and squeezing the circuit board.
[0025] The following is a detailed description of the actual working scenario of a small-sized geological parameter measurement short circuit.
[0026] In actual operation, the small-sized geological parameter measuring short circuit is connected to the BCPM short section in the rotary steering tool and sent down to the target depth. During this process, the wear-resistant ring and the shock-absorbing ring 8 play an important role in reducing the impact of friction and vibration between the equipment and the well wall on the equipment. When the equipment reaches the designated depth, it begins to collect downhole geological parameters in real time. The gamma sensor 2 and the azimuth gamma sensor 7 measure the intensity and direction of gamma rays, respectively, and transmit the data to the main control board through the main control board cable tray. At the same time, the magnetometer is also measuring the intensity and direction of the magnetic field downhole. These data are also transmitted to the main control board through the main control board cable tray. The main control board performs preliminary processing on the received data from various sensors and transmits the data to the surface monitoring system through the data reading port 5. Surface technicians can view the changes in downhole geological parameters in real time through the monitoring system.
[0027] It is understood that the various embodiments mentioned above in this invention can be combined with each other to form combined embodiments without violating the principle and logic. Due to space limitations, this invention will not elaborate further.
[0028] Those skilled in the art will understand that, in the above-described method of the specific implementation, the order in which each step is written does not imply a strict execution order and does not constitute any limitation on the implementation process. The specific execution order of each step should be determined by its function and possible internal logic.
[0029] This invention provides a small-sized geological parameter measurement short circuit. By setting several arc-shaped slots on the outer wall of the azimuth gamma frame 1 as a mounting chamber, it integrates a gamma sensor 2, an azimuth gamma sensor 7, a main control board, a power board, and a magnetometer to provide comprehensive geological parameter measurement. It makes reasonable use of space, allowing the various sensors and circuit boards to be arranged compactly together, reducing the overall size. This small-sized geological parameter measurement short circuit can be attached to the drill bit to achieve edge detection function, helping to identify and locate sandstone layers, improve the sandstone drilling rate, and promptly detect deviations in the drilling trajectory, thereby achieving the purpose of timely deviation correction operations.
[0030] The various embodiments of the present invention have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or technical improvements to the embodiments in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.
Claims
1. A small-sized geological parameter measurement short circuit, characterized in that, include: Azimuth gamma skeleton (1) and gamma sensor (2); The azimuth gamma skeleton (1) is a hollow cylindrical structure. The outer wall of the azimuth gamma skeleton (1) is provided with several arc-shaped slots, which are placement chambers. The several placement compartments include: a gamma sensor placement compartment, a circuit board placement compartment, an orientation gamma sensor placement compartment, a main control board placement compartment (3), a power board placement compartment, and a magnetometer placement compartment. The gamma sensor placement compartment is equipped with a gamma sensor (2). The outer wall of the gamma sensor (2) is equipped with a gamma sensor cover. A shielding layer (6) is provided between the gamma sensor (2) and the gamma frame (1). The gamma sensor cover is fixed to the outer wall of the azimuth gamma frame (1) by several fastening bolts (9); The main control board is provided in the main control board placement compartment (3), and the main control board is provided with a main control board cover (4) on the outer wall of the main control board. The azimuth gamma skeleton (1) is provided with a data reading port (5) on the outer wall, and the data reading port (5) is provided with a data reading port cover on the outer wall. The gamma sensor placement chamber is symmetrically provided with azimuth gamma sensor placement chambers. The azimuth gamma sensor placement chambers are provided with azimuth gamma sensors (7). The azimuth gamma sensor placement chambers are provided with main control board wire grooves on one side. The main control board wire grooves are respectively provided with passages between the azimuth gamma sensor (7) and the gamma sensor (2). The main control board cable trays are connected to several placement compartments.
2. The small-size geological parameter measurement short circuit according to claim 1, characterized in that, The outer wall of the azimuth gamma skeleton (1) is uniformly provided with several wear-resistant rings along the axial direction. The wear-resistant rings are composed of several rectangular wear-resistant blocks (10), and the several rectangular wear-resistant blocks (10) are uniformly provided on the outer wall of the gamma skeleton (1) in the circumferential direction.
3. The small-size geological parameter measurement short circuit according to claim 1, characterized in that, The shielding layer (6) is made of tungsten alloy and can shield 80%-90% of gamma rays, thereby achieving gamma zoning.
4. The small-size geological parameter measurement short circuit according to claim 1, characterized in that, It also includes several damping rings (8), which are evenly distributed on both sides of the outer wall of the gamma sensor (2). The damping rings (8) reduce the vibration between the gamma sensor (2) and the gamma skeleton (1).
5. The small-size geological parameter measurement short circuit according to claim 1, characterized in that, It also includes two conductive rings (11), the two conductive rings (11) include: a first conductive ring and a second conductive ring, the two ends of the azimuth gamma skeleton (1) are provided with grooves, the first conductive ring is provided in the groove at the left end, the second conductive ring is provided in the groove at the right end, the outer wall at the left end of the azimuth gamma skeleton (1) is provided with threads, and the inner wall at the right end is provided with threads.
6. The small-size geological parameter measurement short circuit according to claim 5, characterized in that, The circuit board mounting compartment is located on one side of the gamma sensor mounting compartment. The circuit board mounting compartment is equipped with a signal conversion board, which is used to convert FSK signals into RS232 signals. The lower end of the circuit board mounting compartment is equipped with a wire groove, which is connected to the wire groove of the main control board.
7. The small-size geological parameter measurement short circuit according to claim 6, characterized in that, The main control board mounting compartment (3), the power board mounting compartment and the magnetometer mounting compartment are evenly arranged circumferentially on the right outer wall of the azimuth gamma frame (1), and the bottom of the main control board mounting compartment (3), the power board mounting compartment and the magnetometer mounting compartment are connected by oblique round holes. The power board mounting compartment contains a power board and an inductor, and the magnetometer mounting compartment contains a magnetometer; The magnetometer housing and the power board housing are provided with through holes that penetrate the circuit board housing. The right end of the azimuth gamma frame (1) is provided with a through hole that penetrates the power board housing, and the left end of the azimuth gamma frame (1) is provided with a through hole that penetrates the gamma sensor housing.
8. The small-size geological parameter measurement short circuit according to claim 7, characterized in that, The main control board slot is a rectangular slot located in the azimuth gamma frame (1). The main control board slot is used to connect the gamma sensor (2) and the azimuth gamma sensor (7) to the main control board.
9. The small-size geological parameter measurement short circuit according to claim 7, characterized in that, The outer walls of the main control board, power board, and signal conversion board are all covered with silicone potting compound.
10. The small-size geological parameter measurement short circuit according to claim 9, characterized in that, The silicone potting compound has a raised structure on all sides and top, which can protect the circuit board while preventing the soft compound from expanding and squeezing the circuit board.
11. The small-size geological parameter measurement short circuit according to claim 7, characterized in that, The conductive ring (11) consists of two parts: an inner ring and an outer ring. The inner ring is a copper conductive ring, and the outer ring is made of rubber. The outer ring is provided with a hollow support foot. One end of the hollow support foot is connected to the inner ring, and the other end is inserted into the azimuth gamma skeleton (1).