CN214196286U

CN214196286U - Nearly drill bit position gamma instrument

Info

Publication number: CN214196286U
Application number: CN202022982277.2U
Authority: CN
Inventors: 杨博生; 尹永清; 刘立江; 屈国庆; 尹永奇; 胡进; 王曦远; 王东伟; 周强
Original assignee: Orient Energy & Technologies Co ltd
Current assignee: Orient Energy & Technologies Co ltd
Priority date: 2020-12-14
Filing date: 2020-12-14
Publication date: 2021-09-14
Anticipated expiration: 2030-12-14

Abstract

The application discloses nearly drill bit position gamma instrument. The method comprises the following steps: a near bit orientation gamma nipple and a logging while drilling gamma system; the method specifically comprises the steps that a drill bit and a screw drilling tool are respectively arranged at two ends of a gamma nipple close to the drill bit to detect the upper gamma value and the lower gamma value in the stratum; in addition, the screw rotor is arranged in the screw drilling tool, and the logging-while-drilling gamma system is arranged in the screw rotor, so that the logging-while-drilling gamma system screw drilling tool forms an integrated structure; compared with the prior art, the gamma-ray logging-while-drilling system is installed at one end of the screw drilling tool, which is relatively far away from the gamma nipple at the position close to the drill bit, so that the distance between the gamma-ray logging-while-drilling tool and the drill bit is effectively shortened, the measurement accuracy is improved, the difficulty that a well is enlarged and is drilled down can be avoided, the drilling track can be adjusted in real time, and the purpose of the oil deposit drilling rate is improved.

Description

Nearly drill bit position gamma instrument

Technical Field

The present disclosure relates generally to the field of drilling equipment technology, and more particularly to a near-bit orientation gamma instrument.

Background

In drilling engineering such as petroleum, mines, geological exploration and the like, drilling tracks are required to be drilled more accurately according to engineering design requirements, stratum information is mastered timely and accurately to identify thin oil layers, drilling efficiency is improved, and the stratum information is transmitted to the ground in real time. Thus, the engineer can know the changes of the borehole trajectory and the formation information in time.

At present, a traditional gamma tool for logging while drilling is generally inserted with a directional detection sensor on a tool nipple of the traditional gamma tool for logging while drilling and then connected to a downhole instrument for logging while drilling. However, in practical implementation, it can be found that the distance from the logging-while-drilling gamma tool to the drill bit is relatively long, which results in lag of measurement information, when an oil layer is found, the drill bit often advances for a long distance, and at this time, a new stratum is already polluted by mud, so that the accuracy of the measured stratum information is greatly reduced. Therefore, the gamma instrument for the azimuth close to the drill bit is provided to solve the problems that the distance between the gamma instrument for logging while drilling and the drill bit is far, the measurement information is lagged, the borehole is enlarged, the drilling is difficult, and the oil deposit drilling encounter rate is low.

Disclosure of Invention

In view of the above-mentioned defects or shortcomings in the prior art, it is desirable to provide a near-bit orientation gamma instrument which effectively shortens the distance between the logging-while-drilling gamma tool and the bit, improves the measurement accuracy, avoids the borehole from being enlarged and difficult to drill down, can adjust the drilling trajectory in real time, improves the oil deposit drilling rate, has a compact structure, and is easy to implement.

In a first aspect, the present application provides a near-bit azimuth gamma instrument comprising: a near bit orientation gamma nipple and a logging while drilling gamma system;

two ends of the near-bit position gamma nipple are respectively connected with a drill bit and a screw drilling tool; a screw rotor is arranged in the screw drilling tool; the logging while drilling gamma system and the screw drilling tool are integrally formed, and the logging while drilling gamma system is located inside the screw rotor.

According to the technical scheme provided by the embodiment of the application, the logging while drilling gamma system comprises: the near-bit probe circuit and the communication module are connected in a bus mode;

the near-bit probe circuit is used for detecting the rotation angle of the near-bit azimuth gamma nipple and transmitting the rotation angle data to the communication module;

and the communication module is used for receiving and transmitting data.

According to the technical scheme provided by the embodiment of the application, a gamma detector is arranged in the near-bit position gamma nipple;

the gamma detector is connected with the near-bit probe circuit in a bus mode and used for detecting gamma pulse signals in a target layer, processing the gamma pulse signals, measuring and calculating well deviation, transmitting the obtained target data to the near-bit probe circuit and further transmitting the target data to the communication module.

According to the technical scheme provided by the embodiment of the application, the method further comprises the following steps: the control system is in signal connection with the communication module;

and the control system is used for receiving the data transmitted by the communication module.

According to the technical scheme provided by the embodiment of the application, a power supply module is further arranged inside the screw rotor;

the power supply module is connected with the near-bit probe tube circuit in a bus mode and used for providing electric energy.

In conclusion, the technical scheme specifically discloses a specific structure of a near-bit azimuth gamma instrument. The method specifically comprises the steps that a drill bit and a screw drilling tool are respectively arranged at two ends of a gamma nipple close to the drill bit to detect the upper gamma value and the lower gamma value in the stratum; in addition, the screw rotor is arranged in the screw drilling tool, and the logging-while-drilling gamma system is arranged in the screw rotor, so that the logging-while-drilling gamma system screw drilling tool forms an integrated structure;

compared with the prior art, the gamma-ray logging-while-drilling system is installed at one end of the screw drilling tool, which is relatively far away from the gamma nipple at the position close to the drill bit, so that the distance between the gamma-ray logging-while-drilling tool and the drill bit is effectively shortened, the measurement accuracy is improved, the difficulty that a well is enlarged and is drilled down can be avoided, the drilling track can be adjusted in real time, and the purpose of the oil deposit drilling rate is improved.

Drawings

Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:

FIG. 1 is a schematic diagram of a near bit orientation gamma instrument.

FIG. 2 is a schematic flow chart of a gamma ray system for logging while drilling.

Reference numbers in the figures: 100. a drill bit; 200. a near bit azimuth gamma nipple; 210. a gamma detector; 300. a screw drill; 310. a screw rotor; 311. a near-bit probe circuit; 312. a power supply module; 313. and a communication module.

Detailed Description

The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not restrictive of the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.

Example one

Please refer to fig. 1, which illustrates a schematic structural diagram of a near-bit azimuth gamma instrument provided in the present application, including: a near bit azimuth gamma nipple 200 and a logging while drilling gamma system;

the two ends of the near-bit position gamma nipple 200 are respectively connected with a bit 100 and a screw drilling tool 300; a screw rotor 310 is arranged in the screw drill 300; the logging while drilling gamma system is integrally formed with the screw drill 300, and the logging while drilling gamma system is located inside the screw rotor 310.

In this embodiment, the drill bit 100 and the helical drilling tool 300 are respectively disposed at two ends of the near-bit azimuth gamma nipple 200, and are used for detecting upper and lower gamma values in the formation where the drill bit is located; the screw rotor 310 is arranged in the screw drilling tool 300, and the logging-while-drilling gamma system is arranged in the screw rotor 310, so that the logging-while-drilling gamma system screw drilling tool 300 forms an integrated structure;

compared with the prior art, the logging-while-drilling gamma system is arranged at one end of the screw drilling tool 300, which is relatively far away from the gamma nipple 200 at the position close to the drill bit, so that the structure effectively shortens the distance between the logging-while-drilling gamma tool and the drill bit, improves the measurement accuracy, can avoid the difficulty that a well is enlarged and drilled down, realizes the purpose of adjusting the drilling track in real time and improving the oil deposit drilling rate.

In any preferred embodiment, the logging while drilling gamma system comprises: a near-bit probe circuit 311 and a communication module 313 connected in a bus manner;

the near-bit probe circuit 311 is configured to detect a rotation angle of the near-bit orientation gamma nipple 200, and transmit rotation angle data to the communication module 313;

the communication module 313 is configured to receive and transmit data.

In the present embodiment, as shown in fig. 2, the proximal bit probe circuit 311 and the communication module 313 are connected in a bus manner;

the near-bit probe circuit 311 is configured to detect a rotation angle of the near-bit azimuth gamma nipple 200 and transmit rotation angle data to the communication module 313; and can receive the target data of the gamma detector 310 and transmit the data to the communication module;

and the communication module 313 is configured to receive the rotation angle data of the near-bit orientation gamma nipple 200 detected by the near-bit probe circuit 311, and the gamma pulse signal and the well inclination angle in the target layer detected by the gamma detector 210, and transmit the data to the control system.

In any preferred embodiment, the near bit orientation gamma nipple 200 has a gamma detector 210 mounted therein;

the gamma detector 210 is connected to the near-bit probe circuit 311 in a bus manner, and is configured to detect a gamma pulse signal in a target layer, process the gamma pulse signal, measure and calculate a well deviation, and transmit obtained target data to the near-bit probe circuit 311 and further to the communication module 313.

In this embodiment, the gamma detector 210 is disposed inside the near-bit azimuth gamma nipple 200, is connected to the near-bit probe circuit 311 in a bus manner, and is configured to detect a gamma pulse signal in a target layer, process the gamma pulse signal, measure and calculate a well deviation, transmit obtained target data to the near-bit probe circuit 311, and further transmit the target data to the communication module 313

In any preferred embodiment, further comprising: the control system is in signal connection with the communication module 313;

the control system is configured to receive the data transmitted by the communication module 313.

In this embodiment, the control system is in signal connection with the communication module 313 and is configured to receive data transmitted by the communication module 313; the landing target layer or whether drilling is carried out on the target layer can be judged through the received data information, and the purpose of improving the drilling rate of the oil reservoir is achieved;

here, the type of the control system is optionally, for example, an upper computer, the model of which is, for example, M396190.

In any preferred embodiment, a power supply module 312 is further disposed inside the screw rotor 310;

the power supply module 312 is connected to the near-bit probe circuit 311 in a bus manner, and is configured to provide electric power.

In this embodiment, the power supply module 312 is disposed inside the screw rotor 310, and is connected to the near-bit probe circuit 311 in a bus manner, for providing electric energy; here, the type of the power supply module 312, alternatively, is, for example, a high temperature lithium battery;

the connection modes of the near-bit probe circuit 311, the power supply module 312, the communication module 313 and the gamma detector 210 are all connected in a bus mode, so that the power supply module 312 can supply power to each of the near-bit probe circuit 311, the communication module 313 and the gamma detector 210, and signal and data communication transmission can be guaranteed.

The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be appreciated by a person skilled in the art that the scope of the invention as referred to in the present application is not limited to the embodiments with a specific combination of the above-mentioned features, but also covers other embodiments with any combination of the above-mentioned features or their equivalents without departing from the inventive concept. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.

Claims

1. A near-bit azimuth gamma instrument, comprising: a near bit orientation gamma nipple (200) and a logging while drilling gamma system;

two ends of the near-bit orientation gamma nipple (200) are respectively connected with a bit (100) and a screw drilling tool (300); a screw rotor (310) is arranged in the screw drill (300); the logging while drilling gamma system and the screw drill (300) are integrally formed, and the logging while drilling gamma system is positioned inside the screw rotor (310).

2. The near-bit azimuth gamma instrument of claim 1, wherein the logging-while-drilling gamma system comprises: a near-bit probe circuit (311) and a communication module (313) which are connected in a bus manner;

the near-bit probe circuit (311) is used for detecting the rotation angle of the near-bit azimuth gamma nipple (200) and transmitting the rotation angle data to the communication module (313);

the communication module (313) is used for receiving and transmitting data.

3. The near-bit azimuth gamma instrument of claim 2, further comprising: the control system is in signal connection with the communication module (313);

the control system is used for receiving the data transmitted by the communication module (313).

4. The near-bit orientation gamma instrument of claim 2, wherein the screw rotor (310) further comprises a power supply module (312) disposed therein;

the power supply module (312) is connected with the near-bit probe circuit (311) in a bus mode and used for supplying electric energy.