CN204851239U - Position gamma well logging device - Google Patents

Abstract

An azimuth gamma logging device, comprising an azimuth gamma sub-section, the azimuth gamma sub-section is composed of a triaxial acceleration sensor and an azimuth gamma sensor, has a built-in embedded microprocessor system, and a battery sub-section, natural gamma The pup joints and the mud pulser sub joints are sequentially connected with threads. The device can measure the gamma value of any azimuth of the tool while drilling, accurately judge the position of the tool while drilling from the boundary of the formation, keep the tool while drilling in the oil reservoir all the time, and effectively improve the drilling efficiency.

Description

An azimuth gamma logging device

technical field

The utility model can be applied to the field of drilling engineering in petroleum, coal mine and geological exploration, and is an azimuth gamma logging device.

Background technique

At present, in the technical field of inclination measurement while drilling for petroleum drilling, the current formation where the drilling tool is located can be judged by measuring the gamma value of the formation in real time. The natural gamma ray inclinometer can only measure the formation gamma value around the tool while drilling, and the azimuth gamma logging device can identify the formation gamma value at a certain azimuth of the tool while drilling. By uploading the azimuth gamma parameter to the ground in real time, It can quickly and accurately judge whether the tool while drilling is hitting the target layer, which is of great significance in horizontal section drilling.

Contents of the invention

In order to overcome the shortcomings of the prior art, the utility model provides an azimuth gamma logging device, which can measure the gamma value of any azimuth of the tool while drilling.

The technical solution adopted by the utility model to solve its technical problems is: an azimuth gamma logging device, including a battery sub-section, a natural gamma sub-section, an azimuth gamma sub-section and a mud pulser sub-section, the azimuth gamma sub-section The horse sub-section is composed of a three-axis acceleration sensor and an azimuth gamma sensor, with a built-in embedded microprocessor system, which is sequentially connected with a battery sub-section, a natural gamma-ma sub-section and a mud pulser sub-section with threads.

The triaxial acceleration sensor of the azimuth gamma logging device is used to determine the detection direction of the azimuth gamma sensor, wherein: the Z-axis direction of the triaxial acceleration sensor is consistent with the axis direction of the azimuth gamma sensor; The XY axis plane of the three-axis acceleration sensor is parallel to the end face of the azimuth gamma sensor; the position of the three-axis acceleration sensor is determined by detecting the output of the three-axis acceleration sensor, thereby determining the detection of the azimuth gamma sensor direction.

The azimuth gamma sensor is used to detect the formation gamma value in any direction, wherein: a gamma ray shielding layer is added around the azimuth gamma sensor, and the shielding layer only shields a part of the azimuth gamma sensor, so that only Gamma rays incident in the shielding direction are detected, thereby realizing directional detection.

The embedded microprocessor system is used to read and process the position information of the three-axis acceleration sensor and the count value of the azimuth gamma sensor in real time, and judge the detection direction of the azimuth gamma sensor, wherein: the The embedded microprocessor system includes the three-axis acceleration sensor signal processing unit and the azimuth gamma sensor signal processing unit; the three-axis acceleration sensor signal processing unit receives the signal output by the three-axis acceleration sensor and filters and amplifies the signal , and then output to the microprocessor; the azimuth gamma sensor signal processing unit receives the signal output by the azimuth gamma sensor, filters and amplifies the signal, and then outputs it to the microprocessor.

The beneficial effect of the utility model is that the device can measure the gamma value of any azimuth of the drilling tool, accurately judge the position of the drilling tool from the formation boundary, keep the drilling tool always drilling in the oil reservoir, and effectively improve the drilling efficiency. s efficiency.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

Accompanying drawing 1 is the utility model connection schematic diagram.

Accompanying drawing 2 is the structure schematic diagram of the azimuth gamma short joint in the utility model.

In the figure 1. Battery sub-section, 2. Natural gamma sub-section, 3. Azimuth gamma sub-section, 4. Mud pulser sub-section, 5. Magnetic communication male connector, 6. Azimuth gamma connector, 7. Azimuth Gamma short joint outer cylinder, 8. Axial buffer, 9. Triaxial acceleration sensor, 10. Azimuth gamma sensor, 11. Circuit board, 12. Magnetic communication female connector.

Detailed ways

Referring to Figure 1, an azimuth gamma logging device includes a battery subsection (1), a natural gamma subsection (2), an azimuth gamma subsection (3) and a mud pulser subsection (4), the The azimuth gamma sub-section (3) consists of a three-axis acceleration sensor (9) and an azimuth gamma sensor (10), with a built-in embedded microprocessor system, and the battery sub-section (1), natural gamma sub-section (2) and The mud pulsator pup joints (4) are sequentially connected with threads.

The subsections of an azimuth gamma logging device communicate through magnetic coupling. The battery subsection (1) supplies power to the entire device, the mud pulser subsection (4) is at the bottom of the instrument, and provides signal transmission power for the entire device, and the natural gamma subsection (2) measures the gamma of the entire formation of the tool while drilling The value is used to judge the current formation of the instrument. In engineering applications, the azimuth gamma logging device is placed in the non-magnetic drill collar, and the position of the tool while drilling from the upper and lower formations can be judged by monitoring the parameters of the azimuth gamma sub (3) in real time.

See attached drawing 2, the azimuth gamma nipple (3) consists of a magnetic communication male connector (5), an azimuth gamma joint (6), an azimuth gamma nipple outer cylinder (7), an axial buffer (8), It consists of a triaxial acceleration sensor (9), an azimuth gamma sensor (10), a circuit board (11) and a magnetic communication female connector (12). The two ends of the azimuth gamma short joint (3) are respectively equipped with a magnetic communication male connector (5) and a magnetic communication female connector (12) to realize two-way communication with other short joints.

The utility model implementation case has been introduced in detail above, and has set forth the specific case method of the specific implementation mode in the actual use process, and the explanation of the above implementation example is only used to help understand the inclinometer of the inventive method; meanwhile, for those in the art Ordinary technicians, according to the idea of the method of the present invention, there will be changes in the specific implementation and scope of application. In summary, the contents of this specification should not be understood as limitations on the use of the method.

Claims (1)

1. An azimuth gamma logging device, comprising an azimuth gamma sub-section, the azimuth gamma sub-section is composed of a three-axis acceleration sensor and an azimuth gamma sensor, has a built-in embedded microprocessor system, and a battery sub-section, a natural Gamma sub-sections and mud pulser sub-sections are connected sequentially with threads.