A downhole integrated resistivity measurement device

Abstract

The application relates to the technical field of measuring equipment, and discloses a far-end integrated while-drilling resistivity measuring device, which solves the problem that the rotation of a while-drilling measuring instrument cannot be switched at any time at present, and comprises a drill rod, the bottom end of the drill rod is fixedly connected with a drill bit, an instrument mounting mechanism is installed on the outer side of the drill rod, an instrument rotating mechanism is installed at the top of the instrument mounting mechanism, and the instrument rotating mechanism is movably connected with the drill rod; in the application, when the nut is rotated clockwise, the outer connecting sleeve can be moved upwards through cooperation between the nut, the screw rod and the outer connecting sleeve; the second spring is stretched through cooperation between the arc-shaped rod, the sliding block, the rotating rod and the movable block; the positioning rod can be moved to the right until the positioning rod is located in the positioning hole, so that the top ring and the outer ring are fixed with the drill rod; the while-drilling measuring instrument body can be fixed with the drill rod, and the rotation of the while-drilling measuring instrument body can be prevented.

Description

Technical Field

[0001] This invention belongs to the field of measurement equipment technology, specifically a remote integrated drilling resistivity measurement device. Background Technology

[0002] As oil and gas development continues, the development of early conventional oil and gas reservoirs is nearing completion, and the focus is now shifting to the development of unconventional and complex oil and gas reservoirs, and from shallow to deep layers. Geological steering is becoming increasingly common in these unconventional and complex oil and gas reservoirs. In these complex oil and gas reservoirs, the requirements for drilling measurement instruments are becoming increasingly stringent, especially for drilling resistivity measurement, which is the most widely used method in drilling measurement. These higher requirements include: measurement resolution, measurement accuracy, selection of working modes more suitable for engineering applications, and faster data acquisition methods.

[0003] In directional drilling, two drilling methods are often used. One method involves the surface power unit not driving the drill pipe to rotate, but only the mud circulation drives the drill bit through the screw. This method is also called sliding drilling. In this case, the measurement-while-drilling (MWD) instruments above the screw do not rotate. The other method is combined drilling. In this case, the surface power unit drives the drill pipe to rotate, which also drives the entire downhole drilling assembly to rotate. At the same time, the mud circulation drives the drill bit through the screw. This method is also called combined drilling. In this case, the MWD instruments above the screw rotate. However, current technology cannot switch the rotation of the MWD instruments at any time. Summary of the Invention

[0004] In view of the above situation and to overcome the shortcomings of the prior art, the present invention provides a remote integrated drilling resistivity measurement device, which effectively solves the problem that the rotation of the drilling measurement instrument cannot be switched at any time.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a remote integrated drilling resistivity measurement device, comprising a drill rod, a drill bit fixedly connected to the bottom end of the drill rod, an instrument mounting mechanism mounted on the outside of the drill rod, an instrument rotating mechanism mounted on the top of the instrument mounting mechanism, the instrument rotating mechanism being movably connected to the drill rod, and an instrument fixing mechanism mounted on the left side of the instrument rotating mechanism; the instrument mounting mechanism includes a fixing seat fixed to the outside of the drill rod, an outer cylinder fixedly mounted on the top of the fixing seat, top grooves being formed on both sides of the top of the outer cylinder, arc-shaped grooves being formed on both sides of the inner cavity of the outer cylinder, the two arc-shaped grooves communicating with the two top grooves respectively, and retaining grooves being formed on both sides of the inner cavity of the outer cylinder, the two retaining grooves communicating with the two arc-shaped grooves respectively.

[0006] Preferably, a support cylinder is installed above the fixed base, the support cylinder is movably connected to the drill rod, the support cylinder is located inside the outer cylinder, and a first spring is installed at an equal angle between the outer cylinder and the fixed base.

[0007] Preferably, the top of the support cylinder has a groove, and balls are installed at equal angles inside the groove.

[0008] Preferably, the instrument rotation mechanism includes a mounting base that is movably sleeved with the outer side of the drill rod, an inner cylinder that is fixedly sleeved inside the mounting base, the bottom of the inner cylinder being in contact with the top of the ball bearing, the mounting base being movably connected to the outer cylinder, and locking blocks that are fixedly connected to both sides of the mounting base. The top groove and the arc groove are adapted to the locking blocks, and the locking groove and the locking blocks are movably engaged.

[0009] Preferably, the outer side of the inner cylinder is provided with an outer groove, the inner ring is movably engaged inside the outer groove, an outer ring is fixedly installed on the outer side of the inner ring, a connecting rod is fixedly connected to the top left side of the outer ring, a top ring that is movably sleeved with the drill rod is fixedly connected to the top of the connecting rod, and two screws are fixedly connected between the top ring and the outer ring.

[0010] Preferably, a connecting plate is fixedly connected between the top ring and the outer ring, and a mounting plate is movably engaged on the outer side of the connecting plate. Two bolts are installed on both sides of the mounting plate, and the drilling measurement instrument body is fixedly installed inside the mounting plate.

[0011] Preferably, the instrument fixing mechanism includes a slider movably connected to the connecting rod, a base block fixedly connected to the connecting rod is installed below the slider, and a second spring movably connected to the connecting rod is provided between the base block and the slider.

[0012] Preferably, both sides of the slider are fixedly connected to arc-shaped rods, and the right ends of the two arc-shaped rods are fixedly connected to external sleeves. The two external sleeves are movably connected to the two screws respectively, and the bottom of the two external sleeves is equipped with nuts. The two nuts are threadedly connected to the two screws respectively.

[0013] Preferably, a rotating rod is rotatably connected to the top of the slider, a movable block is rotatably connected to the top of the rotating rod, a fixed rod is movably installed inside the movable block, a side block is fixedly connected to the left side of the fixed rod, the left side of the side block is fixedly connected to the connecting rod, a positioning rod is fixedly connected to the right side of the movable block, and a positioning hole is opened on the outer side of the drill rod, the positioning hole and the positioning rod are movably engaged.

[0014] Compared with the prior art, the beneficial effects of the present invention are: (1) In the present invention, through the cooperation between the nut, the screw and the outer sleeve, when the nut rotates clockwise, the outer sleeve can move upward, and through the cooperation between the arc rod and the slider and the rotating rod and the movable block, the second spring is stretched, which in turn allows the positioning rod to move to the right until it is inside the positioning hole, thereby fixing the top ring and the outer ring with the drill pipe, and then fixing the body of the measurement while drilling instrument with the drill pipe, thereby preventing the rotation of the body of the measurement while drilling instrument; (2) In the present invention, through the cooperation between the nut, the screw and the outer sleeve, when the nut rotates counterclockwise, the nut moves upward, and at the same time the second spring resets, causing the slider to move downward, and through the cooperation between the arc rod and the slider and the rotating rod and the movable block, the second spring can ... The cooperation between the movable blocks causes the second spring to stretch, which in turn allows the positioning rod to move to the left until it separates from the positioning hole, which in turn releases the top ring and outer ring from the drill pipe, and then releases the measurement-while-drilling instrument body from the drill pipe, thus facilitating the rotation of the measurement-while-drilling instrument body; (3) Through the cooperation between the top groove, the arc groove and the locking block, the invention allows the mounting seat to be located inside the outer cylinder, while the inner cylinder moves downward and squeezes the support cylinder, which in turn compresses the first spring. When the locking block rotates inside the arc groove to be located below the slot, the first spring resets, which allows the inner cylinder to move upward, and then the locking block is locked into the slot, thus fixing the mounting seat to the outer cylinder, which facilitates the installation of the measurement-while-drilling instrument body. Attached Figure Description

[0015] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof.

[0016] In the attached diagram:

[0017] Figure 1 This is a schematic diagram of the structure of the present invention;

[0018] Figure 2 This is an exploded structural diagram of the present invention;

[0019] Figure 3 This is a schematic diagram of the instrument mounting mechanism of the present invention;

[0020] Figure 4 This is a schematic diagram of the rotating mechanism of the instrument of the present invention;

[0021] Figure 5 This is a schematic diagram of the mounting base structure of the present invention;

[0022] Figure 6 This is a schematic diagram of the fixing mechanism of the instrument of the present invention.

[0023] In the diagram: 1. Drill pipe; 2. Instrument rotation mechanism; 201. Mounting base; 202. Clamping block; 203. Outer ring; 204. Connecting rod; 205. Top ring; 206. Screw; 207. Connecting plate; 208. Mounting plate; 209. Measurement while drilling instrument body; 2010. Bolt; 2011. Inner cylinder; 2012. Inner ring; 2013. Outer groove; 3. Instrument mounting mechanism; 301. Fixed base; 302. Support cylinder; 303. Outer cylinder 304. Ball bearing; 305. Arc groove; 306. Slot; 307. First spring; 308. Top groove; 309. Groove; 4. Drill bit; 5. Instrument fixing mechanism; 501. Slider; 502. Bottom block; 503. Second spring; 504. Arc rod; 505. Nut; 506. Outer sleeve; 507. Positioning rod; 508. Movable block; 509. Fixed rod; 5010. Side block; 5011. Rotating rod; 6. Positioning hole. Detailed Implementation

[0024] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0025] Example 1, by Figures 1-6The invention includes a drill rod 1, with a drill bit 4 fixedly connected to its bottom end. An instrument mounting mechanism 3 is installed on the outside of the drill rod 1, and an instrument rotating mechanism 2 is installed on the top of the instrument mounting mechanism 3. The instrument rotating mechanism 2 is movably connected to the drill rod 1, and an instrument fixing mechanism 5 is installed on the left side of the instrument rotating mechanism 2. In the second embodiment, based on the first embodiment, the instrument mounting mechanism 3 includes a fixing seat 301 fixed to the outside of the drill rod 1. An outer cylinder 303 is fixedly installed on the top of the fixing seat 301. Top grooves 308 are formed on both sides of the top of the outer cylinder 303, and arc-shaped grooves 305 are formed on both sides of the inner cavity of the outer cylinder 303. The two arc-shaped grooves 305 communicate with the two top grooves 308 respectively. Slots 306 are formed on both sides of the inner cavity of the outer cylinder 303, and the two slots 306 communicate with the two arc-shaped grooves 305 respectively. A support cylinder 302 is installed above the fixing seat 301 to support... The support cylinder 302 is movably connected to the drill pipe 1. The support cylinder 302 is located inside the outer cylinder 303. A first spring 307 is installed at an equal angle between the outer cylinder 303 and the fixed seat 301. A groove 309 is opened on the top of the support cylinder 302. Ball bearings 304 are installed at an equal angle inside the groove 309. First, the mounting seat 201 is placed inside the outer cylinder 303, and the locking block 202 is located inside the top groove 308. Then, the support cylinder 302 is moved downward. At this time, the first spring 307 is compressed. When the locking block 202 moves to the inside of the arc groove 305, it rotates. When the locking block 202 is below the slot 306, the control of the mounting seat 201 is released. At this time, the first spring 307 is reset and the support cylinder 302 is moved upward. Then, the locking block 202 is locked into the slot 306. Finally, the installation of the measuring instrument body 209 is completed.

[0026] In Example 3, based on Example 1, the instrument rotation mechanism 2 includes a mounting base 201 that is movably sleeved with the outer side of the drill rod 1. An inner cylinder 2011 is fixedly sleeved inside the mounting base 201, with the bottom of the inner cylinder 2011 fitting against the top of the ball bearing 304. The mounting base 201 is movably connected to the outer cylinder 303. Locking blocks 202 are fixedly connected to both sides of the mounting base 201. A top groove 308 and an arc-shaped groove 305 are adapted to the locking blocks 202. A locking groove 306 is movably engaged with the locking blocks 202. An outer groove 2013 is formed on the outer side of the inner cylinder 2011. An inner ring 2012 is movably engaged inside the outer groove 2013. An outer ring 203 is fixedly installed on the outer side of the inner ring 2012. A connecting rod 204 is fixedly connected to the top left side of the outer ring 203. A connecting rod 204 is fixedly connected to the top of the connecting rod 204. A movable top ring 205 is connected to an outer ring 203 by two screws 206. A connecting plate 207 is also fixedly connected between the top ring 205 and the outer ring 203. An installation plate 208 is movably snapped onto the outer side of the connecting plate 207. Two bolts 2010 are installed on both sides of the installation plate 208. The measurement-while-drilling instrument body 209 is fixedly installed inside the installation plate 208. First, the installation plate 208 is fitted onto the outer side of the connecting plate 207. Then, the installation plate 208 is connected and fixed to the connecting plate 207 by the bolts 2010. Then, the installation of the measurement-while-drilling instrument body 209 is completed. Through the cooperation between the outer groove 2013 and the inner ring 2012, the outer ring 203 and the top ring 205 can be rotated, and finally, the rotation of the measurement-while-drilling instrument body 209 is realized.

[0027] In Example 4, based on Example 1, the instrument fixing mechanism 5 includes a slider 501 movably connected to the connecting rod 204. A base block 502, fixedly connected to the connecting rod 204, is installed below the slider 501. A second spring 503, movably sleeved with the connecting rod 204, is provided between the base block 502 and the slider 501. Arc-shaped rods 504 are fixedly connected to both sides of the slider 501. External sleeves 506 are fixedly connected to the right ends of both arc-shaped rods 504. The two external sleeves 506 are movably connected to two screws 206 respectively. Nuts 505 are installed at the bottom of both external sleeves 506, and the two nuts 505 are threadedly sleeved with the two screws 206 respectively. A rotating rod 5011 is rotatably connected to the top of the slider 501. A movable block 508 is rotatably connected to the top of the rotating rod 5011. The drill pipe 1 has a fixed rod 509 installed inside. A side block 5010 is fixedly connected to the left side of the fixed rod 509. The left side of the side block 5010 is fixedly connected to the connecting rod 204. A positioning rod 507 is fixedly connected to the right side of the movable block 508. A positioning hole 6 is opened on the outside of the drill pipe 1. The positioning hole 6 is movably engaged with the positioning rod 507. First, rotate the nut 505 clockwise to move the outer sleeve 506 upward. Then, the slider 501 is moved upward through the arc rod 504. Then, the movable block 508 is moved to the right through the rotating rod 5011. Then, the positioning rod 507 is moved to the right until it is inside the positioning hole 6. Finally, the top ring 205 and the outer ring 203 are fixed to the drill pipe 1. Finally, the measuring instrument body 209 is fixed to the drill pipe 1 to prevent the measuring instrument body 209 from rotating.

Claims

1. A remote integrated drilling resistivity measurement device, comprising a drill pipe (1), characterized in that: The bottom end of the drill rod (1) is fixedly connected to a drill bit (4). An instrument mounting mechanism (3) is installed on the outside of the drill rod (1). An instrument rotating mechanism (2) is installed on the top of the instrument mounting mechanism (3). The instrument rotating mechanism (2) is movably connected to the drill rod (1). An instrument fixing mechanism (5) is installed on the left side of the instrument rotating mechanism (2). The instrument mounting mechanism (3) includes a fixing seat (301) fixed to the outside of the drill rod (1). An outer cylinder (303) is fixedly installed on the top of the fixing seat (301). Top grooves (308) are opened on both sides of the top of the outer cylinder (303). Arc grooves (305) are opened on both sides of the inner cavity of the outer cylinder (303). The two arc grooves (305) are respectively connected to the two top grooves (308). The outer cylinder (303) The inner cavity has slots (306) on both sides, and the two slots (306) are respectively connected to two arc-shaped grooves (305); a support cylinder (302) is installed above the fixed seat (301), the support cylinder (302) is movably connected to the drill rod (1), and the support cylinder (302) is located inside the outer cylinder (303); a groove (309) is opened on the top of the support cylinder (302), and ball bearings (304) are installed at equal angles inside the groove (309); the instrument rotation mechanism (2) includes a mounting seat (201) that is movably sleeved with the outside of the drill rod (1), and an inner cylinder (2011) is fixedly sleeved inside the mounting seat (201). The bottom of the inner cylinder (2011) is in contact with the top of the ball bearings (304), and the mounting seat (201) and the inner cylinder (304) are in contact. The outer cylinder (303) is movably connected, and the mounting base (201) is fixedly connected to both sides with locking blocks (202). The top groove (308) and the arc groove (305) are adapted to the locking blocks (202), and the locking groove (306) is movably engaged with the locking blocks (202). The outer side of the inner cylinder (2011) is provided with an outer groove (2013), and the inner ring (2012) is movably engaged inside the outer groove (2013). An outer ring (203) is fixedly installed on the outer side of the inner ring (2012). A connecting rod (204) is fixedly connected to the top left side of the outer ring (203). A top ring (205) that is movably sleeved with the drill rod (1) is fixedly connected to the top of the connecting rod (204). Two screws (205) are fixedly connected between the top ring (205) and the outer ring (203). 06); The instrument fixing mechanism (5) includes a slider (501) movably connected to the connecting rod (204), a bottom block (502) fixedly connected to the connecting rod (204) is installed below the slider (501), and a second spring (503) movably sleeved between the bottom block (502) and the slider (501) is provided; both sides of the slider (501) are fixedly connected to arc rods (504), and the right ends of the two arc rods (504) are fixedly connected to outer sleeves (506), the two outer sleeves (506) are movably connected to the two screws (206) respectively, and the bottom of the two outer sleeves (506) is installed with nuts (505), and the two nuts (505) are threadedly sleeved to the two screws (206) respectively;The top of the slider (501) is rotatably connected to a rotating rod (5011), and the top of the rotating rod (5011) is rotatably connected to a movable block (508). A fixed rod (509) is movably installed inside the movable block (508). A side block (5010) is fixedly connected to the left side of the fixed rod (509), and the left side of the side block (5010) is fixedly connected to a connecting rod (204). A positioning rod (507) is fixedly connected to the right side of the movable block (508). A positioning hole (6) is provided on the outer side of the drill rod (1), and the positioning hole (6) is movably engaged with the positioning rod (507).

2. The remote integrated drilling resistivity measurement device according to claim 1, characterized in that: A first spring (307) is installed at an equal angle between the outer cylinder (303) and the fixed seat (301).

3. The remote integrated drilling resistivity measurement device according to claim 2, characterized in that: A connecting plate (207) is fixedly connected between the top ring (205) and the outer ring (203). An installation plate (208) is movably engaged on the outside of the connecting plate (207). Two bolts (2010) are installed on both sides of the installation plate (208). The drilling measurement instrument body (209) is fixedly installed inside the installation plate (208).

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