CN110424957A - One kind is with brill electromagnetic wave azimuthal resistivity measuring instrument - Google Patents

Abstract

The application provides an electromagnetic wave azimuth resistivity measuring instrument while drilling, which includes a detection sub; the two ends of the detection sub are respectively connected with corresponding drill bits and screw rods for detecting the resistivity of the formation. According to the technical solution provided by the embodiment of this application, by installing the detection nipple between the drill bit and the screw rod, the measuring point is closer to the drill bit, and the formation resistivity information at the drill bit can be measured in real time, and the resistivity can be adjusted in time when the resistivity changes , can effectively improve work efficiency.

Description

An electromagnetic wave azimuth resistivity measuring instrument while drilling

technical field

The application relates to the technical field of drilling, in particular to an electromagnetic wave azimuth resistivity measuring instrument while drilling.

Background technique

The main purpose of the near-drill bit while drilling electromagnetic azimuth resistivity measurement is to judge the oil, gas and water layers by determining the physical quantity of the underground rock resistivity, and provide indispensable geological measurement parameters for drilling engineering; this kind of application has a wide range, including land and sea It is widely used in various drilling engineering technologies such as highly deviated wells, extended-reach wells, lateral wells, and horizontal wells (especially thin-bed horizontal wells) in oil and gas development.

The current electromagnetic wave resistivity while drilling is mainly attached to the back of the screw or screw guide, and the measuring point is far away from the drill bit. If the formation resistivity measurement changes, but in fact the drill bit has far exceeded the measured formation, it will take time and effort to adjust again .

Contents of the invention

In view of the above defects or deficiencies in the prior art, it is desired to provide an electromagnetic wave azimuth resistivity measuring instrument while drilling.

The application provides an electromagnetic wave azimuth resistivity measuring instrument while drilling, which includes a detection sub; the two ends of the detection sub are respectively connected with corresponding drill bits and screw rods for detecting the resistivity of the formation.

Further, it also includes a communication module; the communication module is located inside the screw; the communication module is signally connected to the control center and is configured to transmit data to the control center.

Further, a control module is provided inside the detection sub; the control module is connected to the communication module for signals, and is configured to upload processed data to the communication module.

Furthermore, an azimuth module is also provided inside the screw; the azimuth module is connected to the control module for signals, and is configured to detect the rotation angle of the detection pup joint, and complete the azimuth measurement of the azimuth resistivity.

Further, a transmitting antenna and a receiving antenna are arranged inside the detection sub; the transmitting antenna and the receiving antenna are respectively electrically connected to the antenna matching module.

Further, the control module is signal-connected to the antenna matching module, configured to issue a signal transmission instruction to the antenna matching module, receive signal reception data uploaded by the antenna matching module, and process the data.

Further, the receiving antenna includes two vertical antennas and a horizontal antenna; the vertical antenna is ring-shaped and located on the inner wall of the detection sub; the horizontal antenna is located between the two vertical antennas and is perpendicular to the vertical antenna.

Further, the transmitting antenna is ring-shaped and installed on the inner wall of the detection sub; the transmitting antenna is located on the side away from the vertical antenna away from the horizontal antenna.

Further, the probing nipple is provided with strip-shaped holes for the passage of electromagnetic waves corresponding to the transmitting antenna and the receiving antenna.

Further, a power supply element is also arranged inside the screw.

The advantages and positive effects of this application are: by installing the detection nipple between the drill bit and the screw rod, the measuring point is closer to the drill bit, and the formation resistivity information at the drill bit can be measured in real time, and the resistivity can be adjusted in time if the resistivity changes , can effectively improve work efficiency.

According to the technical solution provided by some embodiments of the present application, the direction of formation resistivity change can be identified through the azimuth module, so as to determine the azimuth from which the instrument passes through the formation, which is of great help to engineering.

Description of drawings

Fig. 1 is a schematic structural diagram of an electromagnetic wave azimuth resistivity measuring instrument while drilling provided by an embodiment of the present application;

Fig. 2 is a schematic structural diagram of the detection sub-joint of the electromagnetic wave azimuth resistivity measuring instrument while drilling provided by the embodiment of the present application.

The text marked in the figure is expressed as: 100-detection nipple; 110-transmitting antenna; 120-receiving antenna; 130-antenna matching module; 140-control module; 200-drill; 300-screw; - azimuth module; 330 - power supply element.

Detailed ways

In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be described in detail below in conjunction with the accompanying drawings. The description in this part is only exemplary and explanatory, and should not have any limiting effect on the protection scope of the present invention. .

Please refer to Fig. 1, the present embodiment provides a kind of electromagnetic wave azimuth resistivity measuring instrument while drilling, including the detection pup 100; the two ends of the detection pup 100 are respectively connected with corresponding drill bits 200 and screw rods; by installing the detection pup on Between the drill bit and the screw rod, the measuring point is close to the drill bit, which can measure the formation resistivity information at the drill bit in real time. If the resistivity changes, it can be adjusted in time, which can effectively improve work efficiency.

In a preferred embodiment, a communication module 310 is also included. The communication module 310 is located inside the screw 300. The communication module 310 is connected to the control center by signals and is configured to transmit data to the control center.

In a preferred embodiment, the detection sub 100 is provided with a control module 140 , and the control module 140 is also connected to the communication module 310 by signal, configured to upload the geological analysis results to the communication module 130 .

In a preferred embodiment, an orientation module 320 is also provided inside the screw 300, and the orientation module 320 is connected with the control module 140 for signals. The rotation angle of the axis is detected in real time, and the azimuth information of the azimuth resistivity measurement is provided, so as to determine the azimuth from which the instrument passes through the formation, which is of great help to the project.

Please further refer to Fig. 2, in a preferred embodiment, the inside of the detection sub 100 is provided with a transmitting antenna 110 and a receiving antenna 120; the transmitting antenna 110 and the receiving antenna 120 are respectively electrically connected to the antenna matching module 130; the antenna matching module 130 The transmitting antenna 110 transmits electromagnetic wave signals of 2MHz and 400KHz, and controls the receiving antenna to receive electromagnetic wave signals of 2MHz and 400KHz.

In a preferred embodiment, the control module 140 is signal-connected with the antenna matching module 130, configured to send a signal transmission instruction to the antenna matching module 130, receive the signal reception data uploaded by the antenna matching module 130, and combine the angle uploaded by the azimuth module 320 The data obtains the azimuthal resistivity of the formation in which it is located.

In a preferred embodiment, the receiving antenna 120 includes two vertical antennas and one horizontal antenna; the vertical antenna is circular and located on the inner wall of the detection sub 100; the horizontal antenna is located between the two vertical antennas and is perpendicular to the vertical antenna.

In a preferred embodiment, the transmitting antenna 110 has a ring shape and is installed on the inner wall of the detection nipple 100. The transmitting antenna 110 is set near the end of the screw rod 300, and is located on the side away from the vertical antenna away from the horizontal antenna.

In a preferred embodiment, the probing sub 100 is provided with strip holes corresponding to the transmitting antenna 110 and the receiving antenna 120 for the passage of electromagnetic waves, so as to prevent the probing sub 100 from weakening the electromagnetic wave signal and effectively improve the detection effect.

In a preferred embodiment, a power supply element 330 is further provided inside the screw 300, and the power supply element 330 supplies power to each power consumption module.

In this paper, specific examples are used to illustrate the principle and implementation of the present invention. The description of the above examples is only used to help understand the method and core idea of the present invention. The above is only a preferred embodiment of the present invention. It should be pointed out that due to the limitation of literal expression, there are objectively unlimited specific structures. Under these circumstances, several improvements, modifications or changes can also be made, and the above-mentioned technical features can also be combined in an appropriate manner; these improvements, modifications, changes or combinations, or the idea and technical solution of the invention can be directly applied to other occasions without improvement should be regarded as the scope of protection of the present invention.

Claims (10)

1. a kind of with brill electromagnetic wave azimuthal resistivity measuring instrument, which is characterized in that including detecting pipe nipple (100)；The detection The both ends of pipe nipple (100) are connected separately with corresponding drill bit (200) and screw rod (300), for detecting the resistivity on locating stratum.

2. according to claim 1 with brill electromagnetic wave azimuthal resistivity measuring instrument, which is characterized in that further include communication mould Block (310)；It is internal that the communication module (310) is located at the screw rod (300)；The communication module (310) and control centre believe Number connection, be configured to transmit data to the control centre.

3. according to claim 2 with brill electromagnetic wave azimuthal resistivity measuring instrument, which is characterized in that the detection pipe nipple (100) internal to be equipped with control module (140)；The control module (140) connect with communication module (310) signal, is configured to Data after upload process are to the communication module (310).

4. according to claim 3 with brill electromagnetic wave azimuthal resistivity measuring instrument, which is characterized in that the screw rod (300) internal to be additionally provided with orientation module (320)；The orientation module (320) connect with control module (140) signal, and configuration is used In the rotational angle for detecting detection pipe nipple (100), the azimuthal measurement of azimuthal resistivity is completed.

5. according to claim 3 with brill electromagnetic wave azimuthal resistivity measuring instrument, which is characterized in that the detection pipe nipple (100) inside is equipped with transmitting antenna (110) and receiving antenna (120)；The transmitting antenna (110) and receiving antenna (120) It is electrically connected respectively with antenna match module (130).

6. according to claim 5 with brill electromagnetic wave azimuthal resistivity measuring instrument, which is characterized in that the control module (140) it is connect with antenna match module (130) signal, is configured to issue the antenna match module (130) signal transmitting Instruction receives the signal that the antenna match module (130) uploads and receives data and handle data.

7. according to claim 5 with brill electromagnetic wave azimuthal resistivity measuring instrument, which is characterized in that the receiving antenna It (120) include two vertical antennas and a horizontal antenna；The vertical antenna in a ring, is located at the detection pipe nipple (100) Inner wall on；The horizontal antenna is located between two vertical antennas and perpendicular to the vertical antenna.

8. according to claim 7 with brill electromagnetic wave azimuthal resistivity measuring instrument, which is characterized in that the transmitting antenna (110) in a ring, it is mounted on the inner wall of detection pipe nipple (100)；The transmitting antenna (110) is located at the vertical antenna Far from the horizontal antenna side.

9. according to claim 8 with brill electromagnetic wave azimuthal resistivity measuring instrument, which is characterized in that the detection pipe nipple (100) transmitting antenna (110) and receiving antenna (120) are corresponded on equipped with the strip-shaped hole for passing through for electromagnetic wave.

10. according to claim 1 with brill electromagnetic wave azimuthal resistivity measuring instrument, which is characterized in that the screw rod (300) internal to be additionally provided with power supply component (330).