Well site automatic logging equipment

Abstract

The invention provides automatic well logging equipment for a well site, and relates to the field of well drilling and logging. The automatic well logging equipment for the well site comprises a first mounting shell and a base, and a drilling assembly is arranged at the bottom of the first mounting shell; the drilling assembly comprises a movable shell slidably connected to the interior of the first mounting shell, a motor fixedly connected to the bottom of the movable shell, a rotating shaft rotationally connected to the bottom side of the movable shell, a drill bit fixedly connected to the bottom end of the rotating shaft and a first electric push rod fixedly connected to the top wall of the first mounting shell, and the top end of the rotating shaft is fixedly connected with an output shaft of the motor; the bottom end of the first electric push rod is fixedly connected with the motor; a positioning assembly is arranged at the top of the first mounting shell and used for fixing the first mounting shell to the well wall. A control assembly is arranged on the top of the base. A connecting cable is connected to the top of the first mounting shell. By means of the automatic logging equipment, the stability of the well wall can be kept in the drilling process, interference of an upper rock stratum on drilling operation is reduced, and collected rock debris is more reliable.

Description

Technical Field

[0001] The invention relates to the technical field of drilling logging, in particular to an automatic logging device for a well site. Background Art

[0002] Mud logging is the process of analyzing the information of solid, liquid, gas and other wellbore return materials during the drilling process to establish logging geological profiles, discover oil and gas displays, evaluate oil and gas layers, and provide drilling information services for petroleum projects (investors, drilling projects, and other projects). Mud logging technology is the most basic technology in oil and gas exploration and development activities. It is the most timely and direct means to discover and evaluate oil and gas reservoirs. It has the characteristics of timely and diverse acquisition of underground information and quick analysis and interpretation.

[0003] There are many kinds of logging technologies. According to their data application, they can be divided into geological logging and engineering logging. According to their scientific theoretical basis, logging methods can be divided into logging methods based on geological principles, logging methods based on physical principles, and logging methods based on geochemical principles.

[0004] In geological logging, core logging is the most intuitive and reliable primary data that reflects underground geological characteristics; while cuttings logging is low-cost, simple and easy to use, provides timely understanding of underground conditions, and has strong data systematization. Therefore, it is widely used in the exploration and development of oil and gas fields.

[0005] During the drilling process of cuttings logging, the frequent activity of the drilling tools (such as drill pipes) causes the upper rock layers that have been drilled to easily peel off from the well wall and mix with the real cuttings from the bottom of the well. This mixing phenomenon increases the difficulty and complexity of identifying cuttings, and brings difficulties to the authenticity identification of cuttings. In order to accurately distinguish between true and false cuttings, technicians need to perform identification work, relying on intuitive indicators such as the color freshness, shape characteristics (such as multi-angle or flaky) and possible new components of the cuttings for judgment. However, these intuitive indicators are often affected by multiple factors and have great uncertainty and subjectivity. Although it can be verified by means such as drilling time data and gas logging data, these methods often require a lot of time and resources, and may also be affected by environmental factors in actual operation, resulting in uncertainty in the verification results. Therefore, the present invention provides an automatic logging device for a well site to solve the problems raised in the above background technology. Summary of the invention

[0006] 1. Technical issues to be resolved

[0007] In view of the deficiencies of the prior art, the present invention provides an automatic logging device for a well site, which solves the problem that the mixed rock cuttings phenomenon increases the difficulty and complexity of identifying the rock cuttings, and brings difficulties to the identification of the authenticity of the rock cuttings.

[0008] (II) Technical solution

[0009] To achieve the above objectives, the present invention is implemented through the following technical solutions: an automatic logging device for a well site, comprising a first installation shell and a base, wherein a drilling and breaking assembly is provided at the bottom of the first installation shell;

[0010] The drilling and breaking assembly comprises a movable shell slidably connected to the inside of the first mounting shell, a motor fixedly connected to the bottom of the movable shell, a rotating shaft rotatably connected to the bottom side of the movable shell, a drill bit fixedly connected to the bottom end of the rotating shaft, and a first electric push rod fixedly connected to the top wall of the first mounting shell, the top end of the rotating shaft is fixedly connected to the output shaft of the motor, and the bottom end of the piston rod of the first electric push rod is fixedly connected to the motor;

[0011] A positioning assembly is provided on the top of the first installation shell, and the positioning assembly is used to fix the first installation shell on the well wall;

[0012] A control component is provided on the top of the base, a connecting cable is connected to the top of the first mounting shell, the connecting cable is connected to the control component, and the control component is used to retract and extend the connecting cable;

[0013] A plurality of sampling assemblies are equidistantly arranged on the outside of the connecting cable, and the sampling assemblies are used to collect rock cuttings. The sampling assemblies include a sampling shell, a cover plate movably connected to the inside of the sampling shell, a spring fixedly connected between the bottom of the cover plate and the bottom wall of the sampling shell, and a connecting assembly for fixing the sampling shell to the connecting cable.

[0014] Preferably, the positioning assembly includes a second mounting shell fixedly connected to the top of the first mounting shell, a plurality of second electric push rods evenly fixedly connected to the top of the first mounting shell, and a plurality of plug rods fixedly connected to the corresponding second electric push rod piston rods, the piston rod of the second electric push rod is slidably connected to the inside of the second mounting shell, and the connecting rope is fixedly connected to the top of the second mounting shell.

[0015] Preferably, the control assembly includes a winch fixedly connected to the top of the base, a fixing frame fixedly connected to the top of the base and located on one side of the winch, and a pulley installed on the top of the fixing frame, and the top end of the connecting rope passes through the top of the pulley to connect with the winch.

[0016] Preferably, the connecting assembly includes a connecting piece and a bolt, the middle portion of the connecting piece is set as an arc structure, the connecting rope is located between the middle portion of the connecting piece and the outside of the sampling shell, and the connecting piece is detachably fixed to the outside of the sampling shell by bolts.

[0017] Preferably, a plurality of limit assemblies are evenly arranged on the top of the second mounting shell, and the limit assemblies include a screw rod fixedly connected to the top of the second mounting shell, a movable plate slidably connected to the outside of the screw rod, a roller installed at one end of the movable plate, and a nut threadedly connected to the outside of the screw rod and located at the top of the movable plate.

[0018] Preferably, the bottom of the sampling shell is configured as a conical structure, and the end of the insertion rod away from the second electric push rod is configured as a conical structure.

[0019] Preferably, a cuttings box is provided on the top of the base, and a controller is provided on the top of the base.

[0020] Preferably, two moving wheels are symmetrically mounted on one side of the bottom of the base, and two supporting seats arranged opposite to the moving wheels are symmetrically fixedly connected to the bottom of the base.

[0021] (III) Beneficial effects

[0022] The present invention provides an automatic logging device for a well site, which has the following beneficial effects:

[0023] 1. By setting the first mounting shell and the second mounting shell, combined with the design of the motor, the first electric push rod, the drill bit and the connecting rope, the drilling work at the bottom of the well can be carried out efficiently. Compared with the traditional drill rod system, the independent structure of the equipment effectively reduces the problem of upper rock strata peeling caused by frequent activities of the drill rod. Such frequent activities often cause the rock fragments that have been drilled to be mixed with the fresh rock cuttings from the bottom of the well, thereby increasing the complexity and difficulty of subsequent identification of the authenticity of the rock cuttings. By adopting this automatic logging equipment, it is beneficial to maintain the stability of the well wall during the drilling process, reduce the interference of the upper rock formation on the drilling operation, and make the collected rock cuttings more reliable. This not only simplifies the process of identifying the authenticity of the rock cuttings, but also improves the accuracy of the rock cuttings analysis, thereby providing more realistic data support for subsequent geological research and resource assessment.

[0024] 2. The limit assembly is provided to limit the drilling and breaking assembly, thereby ensuring the free movement of the first mounting shell and ensuring the stability of its movement.

[0025] 3. The sampling assembly is composed of a simple sampling shell, a cover plate and a spring. The bottom of the sampling shell is set to a conical structure to facilitate insertion into the cuttings. The connecting rope moves downward while driving the sampling shell to move into the well. The spring is used to maintain a certain support so that the cover plate is in a closed state. When the connecting rope moves upward, it drives the sampling shell to move upward synchronously. The cover plate moves downward under the pressure of the cuttings, so that the sampling shell can collect the cuttings at the current depth. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the structure of the present invention from a first viewing angle;

[0027] Figure 2 It is a schematic diagram of the structure of the second viewing angle of the present invention;

[0028] Figure 3 It is a schematic diagram of the structures of the drilling and breaking assembly, the positioning assembly and the sampling assembly of the present invention;

[0029] Figure 4 It is a schematic diagram of the internal cross-sectional structure of the first installation shell and the movable shell of the present invention;

[0030] Figure 5 It is a schematic diagram of the internal cross-sectional structure of the sampling shell of the present invention;

[0031] Figure 6 For the present invention Figure 3 The enlarged structural diagram at A in the middle;

[0032] Figure 7 For the present invention Figure 4 Enlarged structural diagram at B in the middle.

[0033] Among them, 1. first mounting shell; 11. drilling and crushing assembly; 1101. movable shell; 1102. drill bit; 1103. motor; 1104. rotating shaft; 1105. first electric push rod; 12. positioning assembly; 1201. second mounting shell; 1202. second electric push rod; 1203. plug rod; 2. base; 3. connecting rope; 4. control assembly; 401. winch; 402. fixing frame; 403. pulley; 5. sampling assembly; 501. sampling shell; 502. cover plate; 503. spring; 504. connecting assembly; 5401. connecting piece; 5402. bolt; 6. limiting assembly; 601. movable plate; 602. screw; 603. roller; 7. moving wheel; 8. controller; 9. support seat; 10. rock cuttings box. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0035] Example:

[0036] like Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, an embodiment of the present invention provides an automatic logging device for a well site, comprising a first mounting shell 1 and a base 2. A drilling and breaking assembly 11 is provided at the bottom of the first mounting shell 1. The drilling and breaking assembly 11 comprises a movable shell 1101 slidably connected to the inside of the first mounting shell 1, a motor 1103 fixedly connected to the bottom of the movable shell 1101, a rotating shaft 1104 rotatably connected to the bottom side of the movable shell 1101, a drill bit 1102 fixedly connected to the bottom end of the rotating shaft 1104, and a first electric push rod 1105 fixedly connected to the top wall of the first mounting shell 1, the top end of the rotating shaft 1104 is fixedly connected to the output shaft of the motor 1103, and the bottom end of the piston rod of the first electric push rod 1105 is fixedly connected to the motor 1103.

[0037] The motor 1103 drives the drill bit 1102 to rotate through the rotating shaft 1104 to drill into the ground. At the same time, in order to control the lifting and lowering of the drill bit 1102, the piston rod of the first electric push rod 1105 can be extended to push the motor 1103 and the drill bit 1102 up and down. The motor 1103 and the drill bit 1102 moving downward can perform deeper drilling work to perform rock cuttings sampling work.

[0038] like Figure 3 and Figure 4 As shown, a positioning assembly 12 is provided on the top of the first mounting shell 1, and the positioning assembly 12 is used to fix the first mounting shell 1 on the well wall. The positioning assembly 12 includes a second mounting shell 1201 fixedly connected to the top of the first mounting shell 1, a plurality of second electric push rods 1202 uniformly fixedly connected to the top of the first mounting shell 1, and a plurality of plug rods 1203 fixedly connected to the piston rods of the corresponding second electric push rods 1202. The piston rod of the second electric push rod 1202 is slidably connected to the inside of the second mounting shell 1201, and the connecting rope 3 is fixedly connected to the top of the second mounting shell 1201.

[0039] When the drill bit 1102 needs to drill, the second electric push rod 1202 runs to push the plug rod 1203 to be plugged into the well wall, at which time the first mounting shell 1 can be positioned, and the drill bit 1102 can be pushed downwards to drill better with the cooperation of the first electric push rod 1105. When a single stroke of drilling is completed, the second electric push rod 1202 retracts the piston rod and separates from the well wall, facilitating the downward movement of the drilling and breaking assembly 11, and the drilling and breaking work continues.

[0040] like Figure 1 and Figure 2As shown, a control component 4 is provided on the top of the base 2, a connecting rope 3 is connected to the top of the first mounting shell 1, the connecting rope 3 is connected to the control component 4, and the control component 4 is used to retract and extend the connecting rope 3. The control component 4 includes a winch 401 fixedly connected to the top of the base 2, a fixing frame 402 fixedly connected to the top of the base 2 and located on one side of the winch 401, and a pulley 403 installed on the top of the fixing frame 402. The top end of the connecting rope 3 passes through the top of the pulley 403 and is connected to the winch 401. The rotation of the winch 401 cooperates with the guiding effect of the pulley 403 to retract and extend the connecting rope 3.

[0041] like Figure 3 , Figure 5 and Figure 6 As shown, a plurality of sampling assemblies 5 are equidistantly arranged on the outside of the connecting cable 3, and the sampling assemblies 5 are used to collect rock cuttings. The sampling assemblies 5 include a sampling shell 501, a cover plate 502 movably connected to the inside of the sampling shell 501, a spring 503 fixedly connected between the bottom of the cover plate 502 and the bottom wall of the sampling shell 501, and a connecting assembly 504 for fixing the sampling shell 501 to the connecting cable 3, and the connecting assembly 504 includes a connecting piece 5401 and a bolt 5402, and the middle portion of the connecting piece 5401 is set as an arc structure, and the connecting cable 3 is located between the middle portion of the connecting piece 5401 and the outside of the sampling shell 501, and the connecting piece 5401 is detachably fixedly connected to the outside of the sampling shell 501 by the bolt 5402.

[0042] As the connecting rope 3 is lowered, the sampling shell 501 is fixed to the outside of the connecting rope 3 by the connection piece 5401 and the bolt 5402 at an equidistant length according to the sampling requirements. The connecting rope 3 moves downward while driving the sampling shell 501 to move into the well, and the spring 503 is used to maintain a certain support so that the cover plate 502 is in a closed state. When the connecting rope 3 moves upward, it drives the sampling shell 501 to move upward synchronously, and the cover plate 502 moves downward under the pressure of the cuttings, so that the sampling shell 501 can collect the cuttings at the current depth.

[0043] like Figure 4 and Figure 7 As shown, in order to further improve the stability of the drilling and breaking assembly 11 in the well, a plurality of limit assemblies 6 are evenly arranged on the top of the second mounting shell 1201. The limit assemblies 6 include a screw 602 fixedly connected to the top of the second mounting shell 1201, a movable plate 601 slidably connected to the outside of the screw 602, a roller 603 installed at one end of the movable plate 601, and a nut threadedly connected to the outside of the screw 602 and located at the top of the movable plate 601.

[0044] The position of the movable plate 601 can be fixed by adjusting the nut, so that the roller 603 is close to the well wall, which plays a limiting role, ensuring the free movement of the first installation shell 1 while ensuring the stability of its movement.

[0045] like Figure 4 and Figure 5 As shown, the bottom of the sampling shell 501 is set to a conical structure, which is convenient for inserting into the rock cuttings. The end of the insertion rod 1203 away from the second electric push rod 1202 is set to a conical structure to facilitate insertion into the well wall.

[0046] like Figure 1 and Figure 2 As shown, a rock cutting box 10 is also provided on the top of the base 2 for storing collected rock cutting samples. A controller 8 is also provided on the top of the base 2 to facilitate the control of the operation of the entire device. Two moving wheels 7 are symmetrically installed on one side of the bottom of the base 2, and two support seats 9 arranged opposite to the moving wheels 7 are symmetrically fixedly connected to the bottom of the base 2 to facilitate the movement and fixation of the device.

[0047] Working principle:

[0048] When in use, first move the device to the side of the well by moving the wheel 7, and adjust the position of the movable plate 601 by adjusting the nut so that the roller 603 is close to the well wall, which plays a limiting role and ensures the stability of the first mounting shell 1 when it moves freely;

[0049] Start the winch 401 of the control assembly 4, lower the connecting rope 3 and the first mounting shell 1 to a suitable position in the well. Then start the second electric push rod 1202 of the positioning assembly 12, so that the insertion rod 1203 is inserted into the well wall fixing device. Then start the motor 1103 of the drilling and breaking assembly 11, so that the drill bit 1102 starts drilling;

[0050] When a single stroke of drilling is completed, the second electric push rod 1202 retracts the piston rod and separates from the well wall, and cooperates with the connecting rope 3 to make the drill bit 1102 move downward to continue drilling and breaking;

[0051] During the drilling process, as the drilling depth of the drill bit 1102 increases, the sampling shell 501 is fixed to the outside of the connecting rope 3 at an equidistant length according to the sampling requirements through the connection piece 5401 and the bolt 5402. The connecting rope 3 moves downward while driving the sampling shell 501 to move into the well, and the spring 503 is used to maintain a certain support so that the cover plate 502 is in a closed state;

[0052] After reaching the preset drilling depth, the connecting rope 3 is retracted by the winch 401. When the connecting rope 3 moves upward, the sampling shell 501 is driven to move upward synchronously. The cover plate 502 moves downward under the pressure of the rock cuttings, so that the sampling shell 501 can collect the rock cuttings at the current depth and complete the sampling. After the sampling is completed, the connecting rope 3 is brought back to the ground, and then the sampling shell 501 is removed from the connecting rope 3 in sequence, and the rock cuttings are stored in the rock cutting box 10 for subsequent analysis.

[0053] The present application can efficiently perform bottom-hole drilling work by setting a first mounting shell 1 and a second mounting shell 1201, combined with the design of a motor 1103, a first electric push rod 1105, a drill bit 1102, and a connecting rope 3. Compared with the traditional drill rod system, the independent structure of the device effectively reduces the problem of upper rock strata peeling caused by frequent drill rod activities. Such frequent activities often cause the drilled rock strata debris to be mixed with fresh rock cuttings from the bottom of the well, thereby increasing the complexity and difficulty of subsequent identification of the authenticity of rock cuttings. By adopting the automatic logging equipment, it is beneficial to maintain the stability of the well wall during the drilling process, reduce the interference of the upper rock strata on the drilling operation, and make the collected rock cuttings more reliable. This not only simplifies the authenticity identification process of rock cuttings, but also improves the accuracy of rock cuttings analysis, thereby providing more realistic data support for subsequent geological research and resource assessment.

[0054] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic logging device for a well site, comprising a first mounting shell (1) and a base (2), characterized in that: A drilling and breaking assembly (11) is provided at the bottom of the first mounting shell (1); The drilling and breaking assembly (11) comprises a movable shell (1101) slidably connected to the inside of the first mounting shell (1), a motor (1103) fixedly connected to the bottom of the movable shell (1101), a rotating shaft (1104) rotatably connected to the bottom side of the movable shell (1101), a drill bit (1102) fixedly connected to the bottom end of the rotating shaft (1104), and a first electric push rod (1105) fixedly connected to the top wall of the first mounting shell (1), the top end of the rotating shaft (1104) is fixedly connected to the output shaft of the motor (1103), and the bottom end of the piston rod of the first electric push rod (1105) is fixedly connected to the motor (1103); A positioning assembly (12) is provided on the top of the first installation shell (1), and the positioning assembly (12) is used to fix the first installation shell (1) on the well wall; A control component (4) is provided on the top of the base (2); a connecting cable (3) is connected to the top of the first mounting shell (1); the connecting cable (3) is connected to the control component (4); and the control component (4) is used to retract and release the connecting cable (3); A plurality of sampling assemblies (5) are equidistantly arranged on the outside of the connecting rope (3), and the sampling assemblies (5) are used to collect rock cuttings. The sampling assemblies (5) comprise a sampling shell (501), a cover plate (502) movably connected to the inside of the sampling shell (501), a spring (503) fixedly connected between the bottom of the cover plate (502) and the bottom wall of the sampling shell (501), and a connecting assembly (504) for fixing the sampling shell (501) to the connecting rope (3).

2. The automatic logging equipment for a well site according to claim 1, characterized in that: The positioning assembly (12) comprises a second mounting shell (1201) fixedly connected to the top of the first mounting shell (1), a plurality of second electric push rods (1202) uniformly fixedly connected to the top of the first mounting shell (1), and a plurality of plug rods (1203) fixedly connected to the piston rods of the corresponding second electric push rods (1202), the piston rods of the second electric push rods (1202) being slidably connected to the inside of the second mounting shell (1201), and the connecting rope (3) being fixedly connected to the top of the second mounting shell (1201).

3. The automatic logging equipment for a well site according to claim 2, characterized in that: The control assembly (4) comprises a winch (401) fixedly connected to the top of the base (2), a fixing frame (402) fixedly connected to the top of the base (2) and located on one side of the winch (401), and a pulley (403) installed on the top of the fixing frame (402), and the top end of the connecting rope (3) passes through the top of the pulley (403) and is connected to the winch (401).

4. The automatic logging equipment for a well site according to claim 3, characterized in that: The connecting assembly (504) comprises a connecting piece (5401) and a bolt (5402); the middle portion of the connecting piece (5401) is configured as an arc structure; the connecting cable (3) is located between the middle portion of the connecting piece (5401) and the outer side of the sampling shell (501); the connecting piece (5401) is detachably fixedly connected to the outer side of the sampling shell (501) by means of the bolt (5402).

5. The automatic logging equipment for a well site according to claim 4, characterized in that: A plurality of limit assemblies (6) are evenly arranged on the top of the second mounting shell (1201), and the limit assemblies (6) include a screw rod (602) fixedly connected to the top of the second mounting shell (1201), a movable plate (601) slidably connected to the outside of the screw rod (602), a roller (603) installed at one end of the movable plate (601), and a nut threadedly connected to the outside of the screw rod (602) and located at the top of the movable plate (601).

6. The automatic logging equipment for a well site according to claim 5, characterized in that: The bottom of the sampling shell (501) is configured as a conical structure, and the end of the insertion rod (1203) away from the second electric push rod (1202) is configured as a conical structure.

7. The automatic logging equipment for a well site according to claim 6, characterized in that: A rock debris box (10) is also provided on the top of the base (2), and a controller (8) is also provided on the top of the base (2).

8. The automatic well logging equipment according to claim 7, characterized in that: Two moving wheels (7) are symmetrically mounted on one side of the bottom of the base (2), and two supporting seats (9) arranged opposite to the moving wheels (7) are also symmetrically fixedly connected to the bottom of the base (2).

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