Near-bit gamma measurement-while-drilling probe

Abstract

The utility model discloses a near-bit gamma measurement-while-drilling exploring tube which comprises a measurement-while-drilling exploring tube body and an inserting and blocking assembly. The measurement-while-drilling exploring tube body comprises an exploring tube main body and a drill rod body; the drill rod body is connected with the exploring tube main body through the inserting and blocking assembly; the inserting and blocking assembly comprises an inserting groove, an inserting block, a baffle A and a baffle B; an inserting groove is formed in the side, close to the drill rod body, of the exploring tube body; the insertion blocks are inserted into the insertion grooves; the multiple baffles A are fixedly arranged on the side, close to the drill rod body, of the exploring tube body in an annular array. The multiple baffles B are fixedly arranged on the side, close to the exploring tube body, of the drill rod body in an annular array. The baffle plates A and the baffle plates B are both of an arc-shaped isosceles triangle structure, and the baffle plates A and the baffle plates B form a complete circular ring structure. The near-bit gamma measurement-while-drilling probe tube is simple and reasonable in structure, ingenious in design, relatively high in working efficiency and relatively good in using effect, and the drill rod body can be quickly and conveniently replaced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of oil exploration, specifically is a near bit gamma while drilling measurement probe pipe. BACKGROUND

[0002] The near bit gamma while drilling measurement probe pipe is a gamma ray detection device installed near the drill bit, which is used to measure the natural gamma radiation intensity of the formation in real time during drilling, thereby helping geologists to conduct geological orientation and well trajectory planning, and its working principle is to work by detecting the naturally occurring gamma rays in the formation. When the radioactive nuclides (such as uranium, thorium, and potassium) in the formation undergo nuclear decay, gamma rays are released. These gamma rays are detected by the NaI crystal in the probe pipe and converted into electrical pulse signals. The electronic components process these signals to obtain the natural gamma radiation intensity of the formation.

[0003] The while drilling measurement probe pipe provided by the Chinese utility model patent with publication number CN203476312U includes a probe pipe joint, a probe pipe protection cylinder, a power module, a control module, and a measurement short section. The probe pipe joint is arranged at one end of the probe pipe protection cylinder and receives external power supply. The power module, the control module, and the measurement short section are all fixed inside the probe pipe protection cylinder. The power module is used to perform level conversion on the external power supply and supply power to the control module and the measurement short section. The measurement short section is configured with a three-axis accelerometer for measuring the earth's gravitational field and a three-axis fluxgate for measuring the geomagnetic field. The control module is connected to the measurement short section to collect the data measured by the measurement short section and calculate the tool face data of the measurement short section. Then, the tool face data is encoded and sent to the outside through the probe pipe joint as a control level signal with encoded data. The utility model can realize high-precision measurement and high-speed transmission of the tool face, and can meet the measurement requirements of the tool face dynamic control system of the downhole directional power drill and other similar systems.

[0004] During oil exploration, the near bit gamma while drilling measurement probe pipe is needed to dynamically measure the attitude of the drill bit and analyze the gamma local radiation of the formation in different directions, thereby guiding the drill bit to pass through the target layer to the greatest extent and effectively improving the drilling rate of thin oil and gas layers. However, the service life of the special drill pipe is shorter than that of the ordinary drill pipe, and the special drill pipe needs to be frequently replaced. In the prior art, the special drill pipe is installed by using a threaded connection, which makes it difficult to quickly and conveniently replace the special drill pipe in the near bit gamma while drilling measurement probe pipe, thereby reducing the working efficiency of the near bit gamma while drilling measurement probe pipe and affecting the use effect of the near bit gamma while drilling measurement probe pipe. UTILITY MODEL CONTENTS

[0005] To achieve the above object, the utility model provides the following technical scheme: a near drill bit gamma while drilling measurement probe pipe, including drilling measurement probe pipe body and insert stop component, the drilling measurement probe pipe body includes probe pipe main part and drill rod body, the drill rod body is connected with the probe pipe main part through the insert stop component, and the drill rod body is provided with near drill bit and is measured through dynamic natural gamma imaging, the insert stop component includes slot, insert block, baffle A and baffle B, the probe pipe main part is provided with slot on the side close to the drill rod body, the insert block is inserted in the slot, a plurality of baffle A is annular array and is fixed on the side close to the drill rod body of the probe pipe main part, a plurality of baffle B is annular array and is fixed on the side close to the probe pipe main part of the drill rod body.

[0006] In the above technical scheme, preferably, the baffle A and the baffle B are both arc isosceles triangle structures, and the plurality of baffle A and the plurality of baffle B form a complete ring structure.

[0007] In the above technical scheme, preferably, the utility model further includes a guide fixing assembly; the guide fixing assembly is arranged on the baffle A.

[0008] In the above technical scheme, preferably, the guide fixing assembly includes a guide groove and a guide block; a plurality of guide grooves are annularly arranged on the insert block; the guide block is fixedly arranged on the inner surface of the baffle A, and the guide block is in sliding fit with the guide groove.

[0009] In the above technical scheme, preferably, the guide fixing assembly further includes a through-hole groove, a positioning block, a spring and a positioning groove; the through-hole groove is arranged on the guide block; two positioning blocks are symmetrically slidably arranged in the through-hole groove; the spring is fixedly connected to the opposite surfaces of the two positioning blocks; two positioning grooves are symmetrically arranged on the inner wall of the guide groove.

[0010] In the above technical scheme, preferably, the positioning block is in clamping fit with the guide groove.

[0011] In the above technical scheme, preferably, the positioning block is in clamping fit with the guide groove.

[0012] Compared with the prior art, the utility model has the advantages that:

[0013] 1、The utility model discloses a insert stop component is set up, and the drill rod body is pulled to the direction away from the probe pipe main part, makes the insert block in the slot sliding, makes baffle A and baffle B no longer contact, until the insert block removes in the slot, relative to prior art, the utility model discloses simple and reasonable structure, and the design is ingenious, and through the plug -in of insert block and the slot and the contact of baffle A and baffle B, the probe pipe main part and the drill rod body can be fixed, so that the drill rod body can be replaced quickly and conveniently, and the working efficiency is higher, and the use effect is better.

[0014] 2, the utility model discloses a guide solid component is set up, and through the positioning block spherically extruded guide groove notch, make two positioning blocks in the through -hole groove relative sliding and extrude spring, make spring force shrink, until the positioning block spherically extruded guide groove inner wall contact, at this moment, positioning block no longer slides, until the positioning block spherically extruded guide groove inner wall contact, at this moment, under the action of spring, will make positioning block and guide groove joint, thereby improved the stability of the installation of the probe pipe main part and drill rod body. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the overall structure schematic view of the utility model;

[0016] Figure 2 It is the overall structure sectional view of the utility model;

[0017] Figure 3 It is the probe pipe main part schematic view of the utility model;

[0018] Figure 4 It is the partial structure split sectional view of the utility model;

[0019] Figure 5 It is the Figure 2 Enlarged schematic view of A place in the middle.

[0020] In the drawing:

[0021] 1, while drilling measurement probe pipe body;101, probe pipe main part;102, drill rod body;2, insert stopper component;201, insert groove;202, insert block;203, baffle A;204, baffle B;3, guide solid component;301, guide groove;302, guide block;303, through -hole groove;304, positioning block;305, spring;306, positioning groove. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be described clearly and completely below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0023] Please refer to Figures 1 to 5The utility model provides a technical scheme: a near drill bit gamma while drilling measurement probe tube, including while drilling measurement probe tube body 1 and insert stop component 2, while drilling measurement probe tube body 1 includes probe tube main body 101 and drill rod body 102, drill rod body 102 is connected with probe tube main body 101 through insert stop component 2, and drill rod body 102 is provided with near drill bit and is measured through dynamic natural gamma imaging, insert stop component 2 includes slot 201, insert block 202, baffle A 203 and baffle B 204, probe tube main body 101 is close to the side of drill rod body 102 and is provided with slot 201, insert block 202 is inserted in slot 201, six baffle A 203 are annular array and are fixed in probe tube main body 101 close to the side of drill rod body 102, six baffle B 204 are annular array and are fixed in drill rod body 102 close to the side of probe tube main body 101, and the contact surface of baffle A 203 and baffle B 204 is inclined plane.

[0024] The utility model discloses a technical scheme: a near drill bit gamma while drilling measurement probe tube, including while drilling measurement probe tube body 1 and insert stop component 2, while drilling measurement probe tube body 1 includes probe tube main body 101 and drill rod body 102, drill rod body 102 is connected with probe tube main body 101 through insert stop component 2, and drill rod body 102 is provided with near drill bit and is measured through dynamic natural gamma imaging, insert stop component 2 includes slot 201, insert block 202, baffle A 203 and baffle B 204, probe tube main body 101 is close to the side of drill rod body 102 and is provided with slot 201, insert block 202 is inserted in slot 201, six baffle A 203 are annular array and are fixed in probe tube main body 101 close to the side of drill rod body 102, six baffle B 204 are annular array and are fixed in drill rod body 102 close to the side of probe tube main body 101, and the contact surface of baffle A 203 and baffle B 204 is inclined plane.

[0025] As preferred implementation, baffle A 203 and baffle B 204 are all arc isosceles triangle structure, and six baffle A 203 and six baffle B 204 form complete ring structure. To facilitate the extension of the contact part between baffle A 203 and baffle B 204, the possibility of mud seeping through the gap between baffle A 203 and baffle B 204 during the working process of while drilling measurement probe tube body 1 is reduced, thereby prolonging the service life of while drilling measurement probe tube body 1.

[0026] As a preferred embodiment, the device further comprises a guide and fixing assembly 3; the guide and fixing assembly 3 is arranged on the baffle A 203; the guide and fixing assembly 3 comprises a guide groove 301, a guide block 302, a through-hole groove 303, a positioning block 304, a spring 305 and a positioning groove 306; six guide grooves 301 are arranged in an annular array on the plug block 202; the guide block 302 is fixedly arranged on the inner surface of the baffle A 203, and the guide block 302 is in sliding fit with the guide groove 301; the through-hole groove 303 is arranged on the guide block 302; two positioning blocks 304 are symmetrically and slidingly arranged in the through-hole groove 303; the spring 305 is fixedly connected to the two positioning blocks 304 in opposite positions; two positioning grooves 306 are symmetrically arranged on the inner wall of the guide groove 301; the positioning block 304 is in clamping fit with the guide groove 301; the positioning block 304 is in a semi-spherical structure, and the spherical surface of the positioning block 304 is in contact with the inner wall of the through-hole groove 303.

[0027] The guide and fixing assembly 3 is arranged, the spherical surface of the positioning block 304 extrudes the notch of the guide groove 301, the two positioning blocks 304 relatively slide in the through-hole groove 303 and extrude the spring 305, the spring 305 is forced to contract, until the spherical surface of the positioning block 304 is in contact with the inner wall of the guide groove 301, at this time, the positioning block 304 no longer slides, until the spherical surface of the positioning block 304 is in contact with the inner wall of the positioning groove 306, at this time, under the action of the spring 305, the positioning block 304 is clamped with the positioning groove 306, thereby improving the stability of the installation of the probe main body 101 and the drill rod body 102.

[0028] Working principle: when replacing, first, the drill rod body 102 is pulled away from the probe main body 101, the plug block 202 slides in the plug groove 201, the baffle A 203 and the baffle B 204 no longer contact, the guide block 302 slides in the guide groove 301, the spherical surface of the positioning block 304 extrudes the inner wall of the positioning groove 306, the two positioning blocks 304 relatively slide in the through-hole groove 303 and extrude the spring 305, the spring 305 is forced to contract, until the spherical surface of the positioning block 304 is in contact with the inner wall of the guide groove 301, at this time, the positioning block 304 no longer slides, until the spherical surface of the positioning block 304 is no longer in contact with the inner wall of the through-hole groove 303, at this time, under the action of the spring 305, the positioning block 304 moves to the original position, and the plug block 202 moves out of the plug groove 201, the disassembly is completed, when installing, the plug block 202 is inserted into the plug groove 201, and the guide block 302 is inserted into the guide groove 301, then the drill rod body 102 is pushed towards the probe main body 101, until the positioning block 304 is clamped with the positioning groove 306, at this time, the side surface of the plug block 202 is in contact with the inner wall of the plug groove 201, and the baffle A 203 and the baffle B 204 contact, the installation is completed.

[0029] The above is the working process of the entire device, and the contents not described in detail in the specification all belong to the prior art known to those skilled in the art.

[0030] While the embodiments of the present application have been illustrated and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the spirit and scope of the application, which is defined by the appended claims and their equivalents.

Claims

1. A near-bit gamma-while-drilling measurement probe, comprising: The utility model provides a kind of drilling measurement probe body (1) and insert stop component (2);The drilling measurement probe body (1) includes probe body (101) and drill pipe body (102);The drill pipe body (102) is connected with probe body (101) by insert stop component (2), and near drill bit is provided on the drill pipe body (102) and is measured by dynamic natural gamma imaging;The insert stop component (2) includes slot (201), insert block (202), baffle A (203) and baffle B (204);Probe body (101) is close to the side of drill pipe body (102) and is provided with slot (201);Insert block (202) is inserted in slot (201);Several baffle A (203) are annular array and are fixed to the side of probe body (101) close to drill pipe body (102);Several baffle B (204) are annular array and are fixed to the side of drill pipe body (102) close to probe body (101).

2. The near-bit gamma-ray measurement while drilling probe according to claim 1, characterized in that, The baffle A (203) and baffle B (204) are both arc isosceles triangle structure, and several baffle A (203) and several baffle B (204) form complete ring structure.

3. The near-bit gamma-while-drilling measurement sonde of claim 2, wherein, It further includes guide fixing assembly (3);The guide fixing assembly (3) is arranged on baffle A (203).

4. The near-bit gamma-while-drilling measurement sonde of claim 3, wherein, The guide fixing assembly (3) includes guide groove (301) and guide block (302);Several guide grooves (301) are annular array and are provided on insert block (202);The guide block (302) is fixed on the inner surface of baffle A (203), and the guide block (302) and guide groove (301) are slidingly matched.

5. The near-bit gamma-while-drilling measurement sonde of claim 4, wherein, The guide fixing assembly (3) further includes through-hole groove (303), positioning block (304), spring (305) and positioning groove (306);The through-hole groove (303) is provided on the guide block (302);Two positioning blocks (304) are symmetrically and slidably arranged in the through-hole groove (303);The spring (305) is fixedly connected to the opposite surfaces of the two positioning blocks (304);Two positioning grooves (306) are symmetrically provided on the inner wall of guide groove (301).

6. The near-bit gamma-while-drilling measurement sonde of claim 5, wherein, The positioning block (304) and guide groove (301) are clamped and matched.

7. The near-bit gamma-while-drilling measurement sonde of claim 6, wherein, The positioning block (304) is semispherical structure, and the spherical surface of the positioning block (304) is in contact with the inner wall of the through-hole groove (303).

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