Anchoring device for high-temperature and high-pressure sticking point instrument

Abstract

The utility model relates to the technical field of underground mine detection and fixation, in particular to a high-temperature and high-pressure sticking point instrument anchoring device which comprises an upper end seat, a shaft, a nut assembly, a spring, an elastic piece assembly and a lower end seat. The shaft is sequentially sleeved with a nut assembly, a spring and an elastic piece assembly from top to bottom, a lower end base is arranged at the lower end of the elastic piece assembly, and the upper end and the lower end of an elastic piece are connected with an upper elastic arm component and a lower elastic arm component through fixing pins respectively; external threads matched with internal threads of the nut assembly are arranged on the outer surface of the upper end part of the shaft, and mechanical anchoring of the sticking point instrument under the high-temperature and high-pressure environment is achieved by adjusting the stretching state of the elastic piece and combining metal; the elastic piece assembly can be adjusted at will according to the size of the inner diameter of a well, the structure is simple, cost is lower, the elastic piece assembly is easier to replace without being damaged, working efficiency is improved, and the technical problem that an existing motor control device is prone to being damaged at high temperature and high pressure is effectively solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to underground mine detection fixed technical field, concretely relates to a high temperature and high pressure anchor point instrument anchoring device. BACKGROUND

[0002] The anchor point instrument in prior art needs to realize the fixation of anchor point instrument in the logging process, and the anchor point anchoring device is often used, however the existing anchor point instrument anchoring device generally controls the contraction of the anchor claw through the motor, after the anchor point instrument and other instruments are lowered into the well, the rotation of the motor is controlled to control the opening and closing of the anchor claw, and the fixation is realized. However, the temperature and pressure of oil, gas and other underground wells are relatively high, and some temperatures reach 200 DEG C, and the pressure reaches 170Mpa. Under the condition of high temperature and high pressure, the motor and circuit of the existing anchor point anchoring device often fail, so that the anchoring device cannot realize anchoring normally. At present, there is no solution to this problem in the related prior art. UTILITARY MODEL

[0003] The utility model provides a novel high temperature and high pressure anchor point instrument anchoring device to solve the technical problem that the anchor point anchoring device in prior art is easy to be damaged under high temperature and high pressure.

[0004] To achieve the above object, the utility model provides the following technical scheme: a high temperature and high pressure anchor point instrument anchoring device, which comprises an upper end seat, a shaft, a nut assembly, a spring, a spring piece assembly and a lower end seat, the lower end of the upper end seat is connected with the upper end of the shaft, the shaft is sequentially sleeved with the nut assembly, the spring and the spring piece assembly from top to bottom, and the lower end of the spring piece assembly is provided with the lower end seat, the spring piece assembly comprises an upper spring arm part and a lower spring arm part, the upper end of the spring piece is connected with the upper spring arm part, the lower end of the spring piece is connected with the lower spring arm part, a metal block is arranged on the outer surface of the middle part of the spring piece, the outer surface of the upper end of the shaft is provided with external threads matched with the internal threads of the nut assembly, and the spring piece is in a straight state when the nut assembly is at the uppermost end.

[0005] Further, vertical inverted trapezoidal sockets are arranged on the upper spring arm part and the lower spring arm part, the inner side of the inverted trapezoidal socket is wider than the outer side, the transverse section of the spring piece is also inverted trapezoidal, and the upper and lower ends of the spring piece can be inserted into the inverted trapezoidal sockets on the upper spring arm part and the lower spring arm part to realize fixation.

[0006] Further, a fixed pin hole is horizontally arranged on the two ends of the upper spring arm part, the lower spring arm part and the spring piece, and the fixed pin is transversely inserted into the fixed pin holes on the upper spring arm part, the lower spring arm part and the spring piece to fixedly connect the spring piece to the upper spring arm part and the lower spring arm part.

[0007] Further, the nut assembly comprises a nut and a sleeve, and the lower end of the nut is provided with the sleeve.

[0008] Further, the inside of the sleeve is also provided with internal threads matched with the external threads of the shaft.

[0009] Further, the upper end seat and the lower end seat are connected with the shaft through fastening screws.

[0010] Further, the nut assembly moves to the lowermost end, and the elastic sheets are opened in the largest range.

[0011] Further, the elastic sheets are evenly distributed around the shaft in three rows, and the included angle between two elastic sheets is 120°.

[0012] Compared with the prior art, the high-temperature and high-pressure anchor device has the following beneficial effects:

[0013] In the utility model, through the design of the nut assembly, the spring and the elastic sheet assembly, the high-temperature and high-pressure anchor device can realize pure mechanical anchoring, thereby effectively avoiding the technical problem that the existing motor control is easy to be damaged under high temperature and high pressure, the structure is simple, the cost is lower, the adaptability is wider, the elastic sheet assembly is not easy to be damaged, and the replacement is easier. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a whole structure schematic view of the high-temperature and high-pressure anchor device.

[0015] Figure 2 It is a sectional view of B. Figure 1 It is an enlarged view of A.

[0016] Figure 3 It is a sectional view of B. Figure 1 It is a sectional view of B.

[0017] Figure 4 It is an enlarged view of C. Figure 1 It is an enlarged view of C.

[0018] The drawings are explained as follows: 1, upper end seat; 2, fastening screw; 3, shaft; 4, nut assembly; 4.1, nut; 4.2, sleeve; 5, spring; 6, elastic sheet assembly; 6.1, upper elastic arm part; 6.1.1, fixed pin; 6.2, elastic sheet; 6.3, metal block; 6.4, lower elastic arm part; 7, lower end seat. DETAILED DESCRIPTION

[0019] In order to make the technical means, creation features, purposes and effects of the utility model easy to understand, the technical solutions in the embodiments of the application are clearly and completely described below in conjunction with specific embodiments. Obviously, the described embodiments are some of the embodiments of the application, rather than all the embodiments. Based on the embodiments in the application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the application.

[0020] Embodiment 1, as shown in Figure 1 , Figure 2 , Figure 3 and Figure 4 The utility model discloses an anchor device for high temperature and high pressure card point instrument, including upper end seat 1, fastening screw 2, shaft 3, nut assembly 4, nut 4.1, cover 4.2, spring 5, spring piece assembly 6, upper elastic arm part 6.1, fixed pin 6.1.1, spring piece 6.2, metal block 6.3, lower elastic arm part 6.4 and lower end seat 7, the upper and lower of upper end seat 1, lower end seat 7 are connected instrument string respectively, the upper end seat 1 is connected shaft 3 through fastening screw 2, the shaft 3 is from top to bottom, and the nut assembly 4, spring 5 and spring piece assembly 6 are connected in proper order to make spring 5 and spring piece assembly 6 move along shaft 3 under external force. Spring piece assembly 6 includes upper elastic arm part 6.1, spring piece 6.2 and lower elastic arm part 6.4, the upper end of spring piece 6.2 is connected with upper elastic arm part 6.1, the lower end of spring piece 6.2 is connected with lower elastic arm part 6.4, the outer side surface of the middle part of spring piece 6.2 is further provided with metal block 6.3, the outer thread of the upper end part of shaft 3 is provided with the inner thread matched with nut assembly 4, and the outer thread and the inner thread are matched in thread, the spring piece 6.2 is in straightening state when the nut assembly 4 is at the uppermost end, the spring piece 6.2 is in the maximum opening range when the nut assembly 4 is at the lowermost end, in the use, according to the size of oil and gas well diameter, the adjusting nut assembly 4 is rotated to make spring 5 compress and deform, so that spring piece 6.2 is opened to the suitable state under the extrusion, when the spring piece 6.2 is extruded by the well wall after the instrument is lowered into the well, when the extrusion force is too large, the spring piece 6.2 deforms, and spring 5 is also compressed under the reverse force of spring piece, so that the instrument is more smoothly lowered into the well, and the whole instrument has better adaptability and can be arbitrarily contracted and adjusted according to the size of the oil and gas well inner diameter.

[0021] Preferably, the upper elastic arm part 6.1 and the lower elastic arm part 6.4 are oppositely provided with vertically arranged inverted trapezoidal sockets (not shown in the figure), the inner side of the inverted trapezoidal socket is wider than the outer side; the cross section of the elastic sheet 6.2 is also inverted trapezoidal; the upper and lower ends of the elastic sheet 6.2 can be inserted into the inverted trapezoidal sockets of the upper elastic arm part 6.1 and the lower elastic arm part 6.4 to achieve fixed connection, the design of the inverted trapezoidal socket and the inverted trapezoidal elastic sheet 6.2 has better anchoring effect because the outer side of the elastic sheet 6.2 is narrower when it is fixed by friction with the well wall.

[0022] For example, the inverted trapezoidal socket can also be adjusted to other shapes such as rectangular, and the cross section of the elastic sheet 6.2 is correspondingly provided with the shape.

[0023] For example, the upper elastic arm part 6.1, the lower elastic arm part 6.4 and the elastic sheet 6.2 are further provided with fixed pin holes (not shown in the figure) at the two ends of the connection, the fixed pin 6.1.1 is transversely inserted through the fixed pin holes of the upper elastic arm part 6.1, the lower elastic arm part 6.4 and the elastic sheet 6.2 to fixedly connect the elastic sheet 6.2 to the upper elastic arm part 6.1 and the lower elastic arm part 6.4; the installation of the fixed pin 6.1.1 is simple, which can effectively prevent the elastic sheet 6.2 from falling off; and the replacement of the elastic sheet 6.2 is more convenient.

[0024] For example, the nut assembly 4 includes a nut 4.1 and a sleeve 4.2, the sleeve 4.2 is arranged below the nut 4.1, and the inner side of the nut 4.1 and the sleeve 4.2 is provided with internal threads matched with the external threads of the shaft 3; when the position of the nut 4.1 is adjusted by threads, the sleeve 4.2 can further lock the spring 5 by thread cooperation to prevent displacement of the nut assembly 4 under the extrusion of the well wall in the later stage, and the fastening effect is better.

[0025] For example, the upper end seat 1 and the lower end seat 7 are respectively connected to the upper and lower ends of the shaft 3 by fastening screws 2.

[0026] For example, other tools work in the firm anchoring environment provided by the high temperature and high pressure card point instrument anchoring device.

[0027] For example, the elastic sheet 6.2 is evenly distributed around the shaft 3 in two rows, and the included angle between the two rows is 180°.

[0028] For example, the elastic sheet 6.2 is evenly distributed around the shaft 3 in three rows, and the included angle between the two rows is 120°.

[0029] For example, the elastic sheet 6.2 is evenly distributed around the shaft 3 in six rows, and the included angle between the two rows is 60°.

[0030] Need to explain, this device in actual use, first in the staff using a kind of finished product high temperature high pressure anchor device of card point instrument works, according to the oil and gas well diameter size, rotate screw nut assembly 4 makes that spring 5 compression deformation, so that spring 5 and spring piece assembly 6 under the action of external force along the shaft 3 activity, the stretch size of spring piece 6.2 can be adjusted according to the well diameter at this time;After the instrument is lowered into the well, when the spring piece 6.2 is extruded by the well wall, when the extrusion force is too large, the spring piece 6.2 deforms, and the spring 5 also receives the reverse force of the spring piece and is compressed, so that the instrument is more smoothly lowered into the well;The whole instrument has better adaptability, under the condition of high temperature and high pressure, the mechanical operation mode is used to avoid the fault of the existing anchor device motor and circuit, so as to cause the problem that the anchor device cannot realize anchoring normally, the structure of the device is simple, the cost is lower, the adaptability is wider, the spring piece assembly can be adjusted according to the well diameter, the spring piece assembly is not damaged and replaced more easily, and the working efficiency is improved.

[0031] The basic principle and main features of the present application and the advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A high temperature high pressure card point anchor device, characterized by: The utility model relates to a spring device, including upper end seat (1), shaft (3), nut assembly (4), spring (5), spring piece assembly (6), lower end seat (7), the lower end of upper end seat (1) is connected the upper end of shaft (3), the shaft (3) from top to bottom, nut assembly (4), spring (5) and spring piece assembly (6) are sequentially sleeved, the lower end of spring piece assembly (6) is provided with lower end seat (7), spring piece assembly (6) includes upper spring arm part (6.1), spring piece (6.2) and lower spring arm part (6.4), the upper end of spring piece (6.2) is connected with upper spring arm part (6.1), the lower end of spring piece (6.2) is connected with lower spring arm part (6.4), the outer side of the middle part of spring piece (6.2) is also provided with metal block (6.3), the outer thread of the upper end part of shaft (3) is provided with the inner thread of nut assembly (4) compatible, when spring piece (6.2) is in straightened state when nut assembly (4) is in the uppermost end.

2. The high-temperature high-pressure cusp anchor of claim 1, wherein: The upper spring arm part (6.1) and lower spring arm part (6.4) are oppositely provided with the vertical direction arranged inverted trapezoidal socket, and the inner side width of the inverted trapezoidal socket is greater than the outer side, the cross section of spring piece (6.2) is also inverted trapezoidal, and the upper and lower ends of spring piece (6.2) can be inserted into the inverted trapezoidal socket on the upper spring arm part (6.1) and lower spring arm part (6.4) to realize fixation.

3. The high-temperature high-pressure cusp anchor of claim 2, wherein: The upper spring arm part (6.1), lower spring arm part (6.4) and spring piece (6.2) are also provided with fixed pin holes on the two ends of the connecting part, the fixed pin (6.1.1) is transversely inserted through the fixed pin holes on the upper spring arm part (6.1), lower spring arm part (6.4) and spring piece (6.2) to fixedly connect spring piece (6.2) on the upper spring arm part (6.1) and lower spring arm part (6.4).

4. The anchoring device for high-temperature and high-pressure coketester according to claim 1, characterized in that: The nut assembly (4) includes nut (4.1) and sleeve (4.2), and the sleeve (4.2) is arranged below the nut (4.1).

5. The high-temperature high-pressure cusp meter anchoring device of claim 4, wherein: The inner side of the sleeve (4.2) is also provided with the inner thread matched with the outer thread of the shaft (3).

6. The anchoring device for high-temperature and high-pressure coketester according to claim 1, characterized in that: The upper end seat (1) and lower end seat (7) are connected with the shaft (3) through the fastening screw (2).

7. The anchoring device for high-temperature and high-pressure coketester according to claim 1, characterized in that: When the nut assembly (4) moves to the lowermost end, the spring piece (6.2) has the maximum opening range.

8. The high-temperature high-pressure cusp meter anchoring device of claim 1, wherein: The spring piece (6.2) is evenly distributed around the shaft (3) in three rows, and the included angle between two rows is 120 degrees.

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