Instrument for measuring density while drilling

Abstract

The utility model discloses a while-drilling density measuring instrument, and relates to the technical field of while-drilling density measurement. The while-drilling density measuring instrument comprises a drillstock and a drill bit, the drill bit is mounted at one end of the drillstock, the while-drilling density measuring instrument further comprises a protection mechanism, a clamping groove, a camera shooting mechanism and a density measuring mechanism, the protection mechanism is arranged on the drillstock, the clamping groove is formed in the drillstock, the camera shooting mechanism is mounted on the drillstock, and the density measuring mechanism is mounted on the drillstock. The protection mechanism is used for friction protection of the camera mechanism and the density measurement mechanism. According to the while-drilling density measuring instrument, by means of the arrangement mode that the protection mechanism is matched with the camera shooting mechanism and the density measuring mechanism, the protection mechanism can conduct friction protection on the camera shooting mechanism and the density measuring mechanism at one end of the drill handle, and by means of the camera shooting mechanism, the surrounding environment of the drill rod can be observed; the abrasion of the camera and the density sensor is reduced, and the accuracy of the density sensor during liquid density measurement is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of density measurement while drilling, in particular to a density measurement while drilling instrument. Background Art

[0002] Measurement while drilling is the process of continuously detecting information about the borehole or drill bit while the drilling rig is drilling. It occupies an important position in the field of density logging and neutron logging while drilling. It plays an important role in timely identifying formation lithology, permeability, oil density, oil saturation and oil and gas display. The density measurement instrument while drilling is an essential parameter for the detailed evaluation of formations while drilling.

[0003] In order to measure the density of underground liquids, existing measurement while drilling instruments usually embed detection sensors or detectors directly on the measurement while drilling instruments. However, during the drilling process, mud or sand and gravel will rub against the surface of the drilling instrument, which can easily cause the detectors or sensors to wear, affecting the stability of the measurement during subsequent detection and reducing the measurement accuracy. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a density measurement while drilling instrument, which solves the problem of low liquid density measurement accuracy caused by wear of the density sensor.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a density measurement instrument while drilling, comprising a drill shank and a drill bit, wherein the drill bit is mounted on one end of the drill shank, and further comprising:

[0006] A protection mechanism, wherein the protection mechanism is provided on the drill handle;

[0007] A clamping slot, the clamping slot being provided on the drill shank;

[0008] A camera mechanism, the camera mechanism being mounted on the drill shank and used for observing the outside of the drill shank;

[0009] The density measuring mechanism is installed on the drill shank and is used to measure the density of liquid outside the drill shank. The protective mechanism is used to provide friction protection between the camera mechanism and the density measuring mechanism.

[0010] Preferably, the protection mechanism includes:

[0011] a casing, the casing being slidably connected to the outer wall of the drill shank;

[0012] A fixing rod, the fixing rod being fixed to the middle portion of the sleeve;

[0013] An electric telescopic rod is fixedly inserted into one end of the card slot, and the telescopic end of the electric telescopic rod is installed on the fixed rod.

[0014] Preferably, the fixing rod is slidably connected with the inner cavity of the card slot, and a transparent cover is fixedly embedded in the outer wall of the sleeve.

[0015] Preferably, the camera mechanism includes:

[0016] A camera, the camera being fixedly embedded in the outer wall of the drill handle;

[0017] The protective ring is fixed to the camera end of the camera, and the protective ring is in contact with and rubs against the inner wall of the sleeve.

[0018] Preferably, the density measuring mechanism comprises:

[0019] A connecting groove, the connecting groove being formed on the outer wall of the drill shank;

[0020] a density sensor, the density sensor being embedded in the inner cavity of the connecting groove;

[0021] a sealing collar mounted on a probe end of the density sensor;

[0022] The sealing rubber is fixed between the sealing ring and the connecting groove.

[0023] Preferably, the density sensor is used for measuring the density of liquid, the sealing rubber is used for sealing and protecting the inner side of the connecting groove, and a wire hole is provided in the middle of the drill shank.

[0024] Preferably, the drill bit comprises:

[0025] A head body, the head body being threadedly connected to one end of the drill shank;

[0026] A scraper wing, the scraper wing being provided at one end of the head body;

[0027] Wear-resistant beads are equidistantly and rotatably embedded on the outside of the scraper wing.

[0028] Preferably, a sealing gasket is fitted on the other end of the head body, and one end of the casing and the drill shank is fitted with the sealing gasket.

[0029] The utility model discloses a density measurement instrument while drilling, which has the following beneficial effects:

[0030] By coordinating the protective mechanism with the camera mechanism and the density measuring mechanism, the protective mechanism can provide friction protection for the camera mechanism and the density measuring mechanism on one end of the drill shank. The camera mechanism can also observe the surrounding environment of the drill rod, so that the protective mechanism will not be moved out at will, thereby reducing the wear of the camera and the density sensor and improving the accuracy of the density sensor in measuring the liquid density. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0032] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0033] Figure 2 This is a schematic diagram of the overall front cross-sectional structure of the utility model;

[0034] Figure 3 For this utility model Figure 2 A schematic diagram of the partially enlarged structure at center A;

[0035] Figure 4 This is a schematic diagram of the side cross-sectional structure of the drill handle of the utility model;

[0036] Figure 5 This is a schematic diagram of the side sectional structure of the casing of the utility model.

[0037] In the figure: 1. Drill shank; 2. Drill bit; 21. Drill head; 22. Scraper wings; 23. Wear-resistant beads; 3. Protective mechanism; 31. Casing; 32. Fixed rod; 33. Electric telescopic rod; 4. Card slot; 5. Camera mechanism; 51. Camera; 52. Protective ring; 6. Density measuring mechanism; 61. Connecting groove; 62. Density sensor; 63. Sealing ring; 64. Sealing rubber; 7. Transparent cover; 8. Sealing gasket; 9. Wire hole. DETAILED DESCRIPTION

[0038] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0039] The embodiment of the present application solves the problem of low liquid density measurement accuracy caused by wear of the density sensor by providing a density measurement instrument while drilling. The protective mechanism cooperates with the camera mechanism and the density measurement mechanism so that the protective mechanism can provide friction protection for the camera mechanism and the density measurement mechanism on one end of the drill shank. The setting of the camera mechanism can observe the surrounding environment of the drill rod, so that the protective mechanism will not be moved out at will, thereby reducing the wear of the camera and the density sensor and improving the accuracy of the density sensor in measuring liquid density.

[0040] In order to better understand the above technical solution, the above technical solution will be described in detail below with reference to the accompanying drawings and specific implementation methods.

[0041] The embodiment of the utility model discloses a density measurement while drilling instrument.

[0042] According to the attached Figure 1 As shown in FIG-5 , it includes a drill shank 1 and a drill bit 2. The drill bit 2 is installed at one end of the drill shank 1. The drill shank 1 is installed on a drilling rig. The drill shank 1 also includes: a protective mechanism 3, a card slot 4, a camera mechanism 5 and a density measuring mechanism 6. The protective mechanism 3 is provided on the drill shank 1. The card slot 4 is opened on the drill shank 1. The camera mechanism 5 is installed on the drill shank 1 and is used to observe the outside of the drill shank 1. The density measuring mechanism 6 is installed on the drill shank 1 and is used to measure the density of the liquid outside the drill shank 1. The protective mechanism 3 is used to protect the camera mechanism 5 and the density measuring mechanism 6 from friction.

[0043] Among them, the drill bit 2 includes: a head body 21, scraper wings 22 and wear-resistant beads 23. The head body 21 is threadedly connected to one end of the drill handle 1, and the scraper wings 22 are arranged at one end of the head body 21. Multiple scraper wings 22 are installed in a circular array at the drilling end of the head body 21. The wear-resistant beads 23 are equidistantly rotated and embedded in the outside of the scraper wings 22. Through the setting of the wear-resistant beads 23, the wear of the scraper wings 22 by rock mud and the like is reduced, thereby improving the service life of the drill bit 2.

[0044] Furthermore, the protection mechanism 3 includes: a casing 31, a fixed rod 32 and an electric telescopic rod 33. The casing 31 is slidably connected to the outer wall of the drill shank 1. The casing 31 is made of wear-resistant steel. Through the casing 31, the outer end of the drill shank 1 is easily protected to reduce the friction damage of solid materials such as rock mud to the camera mechanism 5 and the density measurement mechanism 6 on one end of the drill shank 1. The fixed rod 32 is fixed to the middle of the casing 31, and the electric telescopic rod 33 is fixedly inserted into one end of the card slot 4. The telescopic end of the electric telescopic rod 33 is installed on the fixed rod 32. The fixed rod 32 is slidably inserted into the inner cavity of the card slot 4. The electric telescopic rod 33 is fixedly inserted into the middle of the drill shank 1. By driving the electric telescopic rod 33, it can push and pull the fixed rod 32, so that the casing 31 can slide stably at one end of the outer wall of the drill shank 1.

[0045] Specifically, the imaging mechanism 5 includes: a camera 51 and a protective ring 52. The camera 51 is fixedly embedded in the outer wall of the drill shank 1. The camera 51 is used to observe liquids such as rocks, mud or oil outside the drill shank 1, so as to facilitate the density measurement mechanism 6 to measure the density of the area to be detected. The protective ring 52 is fixed to the camera end of the camera 51, and the protective ring 52 is in contact with the inner wall of the casing 31 for friction. A transparent cover 7 is fixedly embedded in the outer wall of the casing 31. The transparent cover 7 is made of wear-resistant plastic. When the casing 31 is attached to one end of the drill bit 2, the camera 51 and the transparent cover 7 are in a relative state, and the protective ring 52 is in contact with the inner wall of the transparent cover 7, so that the camera 51 can directly observe the underground material layer outside the drill shank 1 through the transparent cover 7.

[0046] More specifically, the density measuring mechanism 6 includes: a connecting groove 61, a density sensor 62, a sealing collar 63 and a sealing rubber 64. The connecting groove 61 is opened on the outer wall of the drill shank 1, and the density sensor 62 is embedded in the inner cavity of the connecting groove 61. The probe end of the density sensor 62 is arranged on the outside of the connecting groove 61. The probe of the density sensor 62 is used to perform contact sensing density measurement with the liquid outside the drill shank 1. The sealing collar 63 is installed at the probe end of the density sensor 62. The sealing rubber 64 is fixed between the sealing collar 63 and the connecting groove 61. The density sensor 62 is used to measure the density of the liquid. The sealing rubber 64 is used to seal and prevent the inner side of the connecting groove 61 from leaking. The sealing rubber 64 is used to seal the inner cavity of the connecting groove 61, so that the density sensor 62 is protected from the influence of liquid erosion, thereby improving the stability of the use of the density sensor 62. A wire hole 9 is provided in the middle of the drill shank 1, so that the connecting wires of the density sensor 62 and the camera 51 can pass through the drill shank 1 stably, and the density sensor 62 and the camera 51 are electrically connected to the external drilling rig power supply through the external drilling rig switch, so that the density sensor 62 and the camera 51 can be used stably. The setting of the casing 31 reduces the wear of the camera 51 and the density sensor 62, and improves the accuracy of the density sensor 62 in measuring liquid density.

[0047] In particular, a sealing gasket 8 is fitted on the other end of the head body 21, and one end of the casing 31 and the drill shank 1 is fitted with the sealing gasket 8. The sealing gasket 8 improves the sealing performance of the casing 31 and the drill shank 1 when they are fitted with one end of the drill bit 2, thereby reducing the entry of liquid or mud between the drill bit 2 and the casing 31, making the use of the measuring instrument more stable.

[0048] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. A density measurement while drilling instrument, comprising a drill shank (1) and a drill bit (2), wherein the drill bit (2) is mounted on one end of the drill shank (1), and characterized in that: Also includes: A protective mechanism (3), wherein the protective mechanism (3) is arranged on the drill handle (1); A clamping slot (4), wherein the clamping slot (4) is provided on the drill shank (1); A camera mechanism (5), the camera mechanism (5) being mounted on the drill shank (1) and being used for observing the outside of the drill shank (1); A density measuring mechanism (6) is installed on a drill shank (1) and is used to measure the density of liquid outside the drill shank (1). The protective mechanism (3) is used to provide friction protection between the imaging mechanism (5) and the density measuring mechanism (6).

2. The density measurement while drilling instrument according to claim 1, characterized in that: The protection mechanism (3) comprises: A sleeve (31), wherein the sleeve (31) is slidably connected to the outer wall of the drill shank (1); A fixing rod (32), wherein the fixing rod (32) is fixed to the middle portion of the sleeve (31); An electric telescopic rod (33) is fixedly inserted into one end of the card slot (4), and the telescopic end of the electric telescopic rod (33) is mounted on the fixed rod (32).

3. The density measurement while drilling instrument according to claim 2, characterized in that: The fixing rod (32) is connected to the inner cavity of the card slot (4) in a sliding manner, and a transparent cover (7) is fixedly embedded on the outer wall of the sleeve (31).

4. The density measurement while drilling instrument according to claim 2, characterized in that: The camera mechanism (5) comprises: A camera (51), wherein the camera (51) is fixedly embedded in the outer wall of the drill handle (1); A protective ring (52) is fixed to the camera end of the camera (51), and the protective ring (52) is in contact with and rubs against the inner wall of the sleeve (31).

5. The density measurement while drilling instrument according to claim 2, characterized in that: The density measuring mechanism (6) comprises: A connecting groove (61), wherein the connecting groove (61) is formed on the outer wall of the drill shank (1); a density sensor (62), wherein the density sensor (62) is embedded in the inner cavity of the connecting groove (61); a sealing collar (63), the sealing collar (63) being mounted on a probe end of the density sensor (62); A sealing rubber (64) is fixed between the sealing collar (63) and the connecting groove (61).

6. The density measurement while drilling instrument according to claim 5, characterized in that: The density sensor (62) is used for measuring the density of liquid, the sealing rubber (64) is used for sealing and protecting the inner side of the connecting groove (61), and a wire hole (9) is provided in the middle of the drill shank (1).

7. The density measurement while drilling instrument according to claim 2, characterized in that: The drill bit (2) comprises: A head body (21), wherein the head body (21) is threadedly connected to one end of the drill shank (1); A scraper wing (22), wherein the scraper wing (22) is provided at one end of the head body (21); Wear-resistant beads (23) are equidistantly and rotatably embedded on the outside of the scraper wing (22).

8. The density measurement while drilling instrument according to claim 7, characterized in that: The other end of the head body (21) is fitted with a sealing gasket (8), and one end of the sleeve (31) and the drill shank (1) is fitted with the sealing gasket (8).

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