CN202953764U - Wellhead guide device for horizontal well logging - Google Patents

Abstract

A horizontal well logging wellhead guide device is applied to oil field logging cable guide. Is characterized in that: two centering fixed pulley supporting plates are welded on the outer wall of the casing coupling; a centering fixed pulley is arranged at the upper end of the centering fixed pulley supporting plate; a screw rod joint is arranged at the lower part of the middle fixed pulley supporting plate, and a screw rod is fixed at the other end of the screw rod joint; the two rotating pins are respectively inserted into the rotating pin holes at the lower end parts of the two guide pulley supporting plates. A guide pulley shaft is arranged in the shaft pin hole at the upper end part of the two guide pulley supporting plates; the connecting plate is connected to the middle parts of the two guide pulley supporting plates by the shaft pins; the other end of the connecting plate is connected with the two ends of the pin shaft. The effect is as follows: the cable joint is used for the horizontal well swabbing test, the cable joint is ensured to smoothly pass through a well mouth, the travelling block of the operation machine can be avoided, the friction between the cable and the travelling block of the operation machine is reduced, and the cable is protected to prevent the cable from being worn. The safety of horizontal well construction is guaranteed, and the logging efficiency is improved.

Description

Wellhead guide device for horizontal well logging

technical field

The utility model relates to the technical field of horizontal well logging in oil fields, in particular to a wellhead cable guiding device for horizontal well logging.

Background technique

At present, the conventional logging technology adopts the method of conveying downhole instruments by cables. In order to protect the cable and prevent the cable from being worn out, an anti-wear device is generally installed at the wellhead, ignoring the wear of the cable and the traveling block of the working machine. The prior art cannot solve this problem.

Chinese Patent Publication No.: CN201080822, (Application No.: CN200720014448.4), provides a "horizontal well logging cable wellhead protection device", which is composed of a pulley, a bearing, an adjustment mechanism, a pulley bracket, a base, a rotating shaft and a pin. There is a pulley with built-in bearings at the inner and outer ends of the pulley bracket to guide the cables. There is an adjustment mechanism on one side of the outer pulley, and the inner pulley is placed above a corner of the square base. A movable shaft is used between the pulley bracket and the base. The connection mode is connected, and the two opposite corners of the base perpendicular to the direction of the pulley support are respectively provided with circular holes, and the circular holes are respectively provided with rotating shafts and pins. Using it can effectively reduce cable wear, avoid accidental extrusion, and ensure that the cable joint passes through the wellhead smoothly, which is conducive to the normal progress of horizontal well logging and prolongs the service life of the cable.

Chinese Patent Publication No.: CN2837509, (Application No.: CN200520127578.X), provides a "horizontal well logging cable protection device", which is composed of a cylinder, a pulley and a fixing bolt, the cylinder is cylindrical, and the lower end of the cylinder is There are fixing bolts. There is a positioning gap at the upper end of the cylinder, and the width of the positioning gap is between 10 and 60 mm. Bearing brackets are fixed on both sides of the positioning gap, and shafts and pulleys are arranged on the bearing brackets. Two centralizing pieces are fixed on the bearing bracket. During the downhole process of the cable, the sliding friction between the cable and the casing is changed to the rolling friction between the cable and the pulley, which reduces the wear of the cable, and the cable positioning gap is low enough to eliminate the possibility of the cable being damaged by the elevator. It can effectively guarantee the safety of logging construction in horizontal wells or highly deviated wells, reduce logging costs, and improve logging success rate.

Utility model content

The purpose of this utility model is: to provide a horizontal well logging wellhead guide device, which is used for horizontal well swabbing test, ensures that the cable joint passes through the wellhead smoothly, can avoid the traveling block of the operating machine, and reduces the number of cables and the traveling block of the operating machine. The friction of the cable protects the cable from abrasion.

The technical scheme adopted by the utility model is: the wellhead guide device for horizontal well logging, which is mainly composed of a casing collar, a centered fixed pulley support plate, a centered fixed pulley, a centered fixed pulley shaft, a connecting plate, a guide pulley, a guide pulley shaft, a shaft It consists of a pin, a guide pulley support plate, a nut, a screw mandrel and a pin shaft. It is characterized in that: the casing collar is cylindrical, and the casing collar can be put on the tubing collar at the wellhead to fix the guiding device during logging work. Two parallel rectangular centered pulley support plates are welded on the outer wall of the casing collar, and the centered fixed pulley support plate is parallel to the center line of the casing collar; The pulley shaft is connected with a centered fixed pulley, which is in the middle of the two centered fixed pulley support plates; a screw joint is connected to the lower part of the two centered fixed pulley support plates through a pin shaft, and the cross section of the screw joint is circular. Shaped or square, there is a pin hole at one end of the screw joint, and a pin hole at the lower part of the two centered fixed pulley support plates, and the pin shaft passes through the pin hole of the screw joint and the two centered fixed pulley support plate shafts Pin hole; the screw joint can rotate along the shaft pin; there is a central screw hole at the other end of the screw joint, and a screw is fixed in the center screw hole at the other end of the screw joint, and the center line of the screw joint and the center line of the screw On the same straight line; there is a nut on the screw rod; there is a sliding sleeve on the lower part of the nut and on the screw rod, two rotating pins are symmetrically welded on the outer wall of the sliding sleeve, and the lower ends of the two guide pulley support plates have rotating Pin holes, two revolving pins are respectively inserted in the repinning holes at the lower ends of the two guide pulley support plates.

The two guide pulley support plates are rectangular flat plates; the upper ends of the two guide pulley support plates have shaft pin holes respectively, and there is a guide pulley shaft in the shaft pin holes at the ends of the two guide pulley support plates. A guide pulley is connected, and the guide pulley is in the middle of the two guide pulley support plates;

There are shaft pin holes in the middle of the two guide pulley support plates, there are shaft pins in the shaft pin holes in the middle of the two guide pulley support plates, and the shaft pins pass through the shaft pin holes in the middle of the two guide pulley support plates and one end of the connecting plate The shaft pin hole, the shaft pin connects the connecting plate in the middle of the two guide pulley support plates; the center fixed pulley support plate has a pin hole in the middle, and the pin shaft hole of the center fixed pulley support plate is pierced with a pin shaft, and the connection plate The other end is connected to the two ends of pin shaft.

A brief description of the use process of the horizontal well logging wellhead guide device is helpful for understanding the utility model. See Figure 1. Before the cable 1 is lowered, the casing collar 1 is first set on the tubing collar at the wellhead. Cable 1 is then passed through the middle of the two guide pulley support plates 10 . Now the nut 11 is at the far end of the screw mandrel 12 . See Figure 2. Firstly, the guide pulley 7 is removed, the cable 2 passes through the hole provided at one end of the guide pulley support plate 10, and the guide pulley 7 and the rotating screw 12 are installed, so that the guide pulley 7 moves inward, so that the cable 2 can swim with the working machine. After there is a certain distance between the moving blocks, the cable 2 can be lowered. When the cable 1 needs to be lowered, the nut 11 is rotated so that the nut 11 is rotated to the end of the screw mandrel 12 close to the screw mandrel joint 13 . Since a quadrilateral is formed between the centered fixed pulley support plate 3, the connecting plate 6, the guide pulley support plate 10, and the screw joint 13, the guide pulley support plate 10 is parallel to the centered fixed pulley support plate 3, and the guide pulley support plate 10 drives the guiding The pulley 7 is away from the top of the casing collar 1 above the wellhead. At this moment, the cable 2 leaves the top of the wellhead at the traction line of the guide pulley 7. After the cable 2 starts under the operation, the cable 2 can avoid the traveling block of the operating machine to avoid the friction between the cable 2 and the traveling block of the operating machine, and prevent the cable 2 from wearing and tearing. Then, the cable 2 enters the wellhead through the guide of the centered fixed pulley 4, so that the cable 2 will not rub against the wellhead casing or oil pipe, reducing the wear of the cable.

Beneficial effects of the utility model: the utility model horizontal well logging wellhead guide device is used for horizontal well swabbing test, ensures that the cable joint passes through the wellhead smoothly, can avoid the traveling block of the operating machine, and reduces the traveling block of the cable and the operating machine The friction of the cable protects the cable from abrasion. Ensure the safety of horizontal well construction and improve logging efficiency.

Description of drawings

Fig. 1 is a structural schematic diagram of a horizontal well logging wellhead guide device of the utility model.

Fig. 2 is a schematic diagram of the working state of the horizontal well logging wellhead guide device.

In the figure, 1. Casing collar; 2. Cable; 3. Centered fixed pulley support plate; 4. Centered fixed pulley; 5. Centered fixed pulley shaft; 6. Connecting plate; 7. Guide pulley; 8. Guide pulley shaft ; 9. Shaft pin; 10. Guide pulley support plate; 11. Nut; 12. Screw rod; 13. Screw joint; 14. Shaft pin.

Detailed ways

Embodiment 1: Taking a horizontal well logging wellhead guide device as an example, the utility model is further described in detail.

See Figure 1. The utility model horizontal well logging wellhead guiding device mainly consists of a casing collar 1, a centered fixed pulley support plate 3, a centered fixed pulley 4, a centered fixed pulley shaft 5, a connecting plate 6, a guide pulley 7, a guide pulley shaft 8, Shaft pin 9, guide pulley support plate 10, nut 11, screw mandrel 12 and bearing pin 14 form.

The casing collar 1 is cylindrical, and two parallel rectangular centered pulley support plates 3 are welded on the outer wall of the casing collar 1. The length of the centered fixed pulley support plate 3 is 400 mm and the width is 70 mm. The central fixed pulley support plate 3 is parallel to the centerline of the casing collar 1 . The upper ends of the two centered fixed pulley support plates 3 are connected with a centered fixed pulley 4 by the centered fixed pulley shaft 5, and the centered fixed pulley 4 is in the middle of the two centered fixed pulley support plates 3. The diameter of centering fixed pulley 4 is 150mm. The bottom of two centered fixed pulley support plates 3 is connected with a screw mandrel joint 13 by pin shaft 14, and the cross section of screw mandrel joint 13 is a square, and one end of the screw mandrel joint 13 has a horizontal pin hole, between two The bottom of fixed pulley support plate 3 in the center has shaft pin hole, and bearing pin 14 passes the pin shaft hole of screw mandrel joint 13 and two center fixed pulley support plate 3 shaft pin holes. There is a central screw hole at the other end of the screw joint 13, and an M20 screw 12 is fixed in the center screw hole at the other end of the screw joint 13, and the center line of the screw joint 13 and the center line of the screw mandrel 12 are on the same straight line superior. A nut 11 of M20 is arranged on the screw mandrel 12 . On the bottom of the nut 11 and on the screw mandrel 12, a sliding sleeve is sleeved. Two rotating pins are symmetrically welded on the outer wall of the sliding sleeve. Insert them respectively in the re-pin holes at the lower ends of the two guide pulley support plates 10.

The two guide pulley support plates 10 are rectangular flat plates, and the length of the guide pulley support plate 10 is 1000mm, and the width is 100mm. The upper ends of the two guide pulley support plates 10 have shaft pin holes respectively, and a guide pulley shaft 8 is arranged in the shaft pin holes at the upper ends of the two guide pulley support plates 10, and the guide pulley shaft 8 is connected with the guide pulley 7. Pulley 7 is in the middle of two guide pulley support plates 10 . There are shaft pin holes in the middle of the two guide pulley support plates 10, and the distance between the pivot pin holes in the middle of the guide pulley support plates 10 to the shaft pin holes at the upper end of the guide pulley support plates 10 is 450mm. A shaft pin 9 is arranged in the shaft pin hole in the middle part of the two guide pulley support plates 10, and the shaft pin 9 passes through the shaft pin hole in the middle part of the two guide pulley support plates 10 and the shaft pin hole at one end of the connecting plate 6, and the shaft pin 9 will The connecting plate 6 is connected in the middle of the two guide pulley support plates 10 .

Centered fixed pulley support plate 3 middle part has pin shaft hole, is worn with pin shaft in the pin shaft hole of centered fixed pulley support plate 3, and the other end of connecting plate 6 is connected on the two ends of pin shaft. The length of the connecting plate 6 is 350mm.

Claims (1)

1. A horizontal well logging wellhead guide device, mainly composed of a casing collar (1), a centered fixed pulley support plate (3), a centered fixed pulley (4), a centered fixed pulley shaft (5), a connecting plate (6 ), guide pulley (7), guide pulley shaft (8), shaft pin (9), guide pulley support plate (10), nut (11), screw mandrel (12) and pin shaft (14); it is characterized in that : the casing collar (1) is cylindrical, and two parallel rectangular centered pulley support plates (3) are welded on the outer wall of the casing collar (1), and the centered fixed pulley support plate (3) and The centerlines of the casing collars (1) are parallel; a central fixed pulley (4) is connected to the upper ends of the two centered fixed pulley support plates (3) through the centered fixed pulley shaft (5), and the centered fixed pulley (4) is in the In the middle of the two centered fixed pulley support plates (3); a screw joint (13) is connected with a pin shaft (14) at the bottom of the two centered fixed pulley support plates (3), and the cross section of the screw joint (13) It is circular or square, with a pin hole at one end of the screw mandrel joint (13), and a pin hole at the bottom of the two centered fixed pulley support plates (3), and the pin shaft (14) passes through the screw mandrel joint (13 ) pin hole and two centered fixed pulley support plates (3) pin holes; there is a center screw hole at the other end of the screw joint (13), and a wire is fixed in the center screw hole at the other end of the screw joint (13). Rod (12), the center line of screw mandrel joint (13) and the center line of screw mandrel (12) are on the same straight line; Nut (11) is arranged on screw mandrel (12); On the bottom of nut (11) and in There is a sliding sleeve on the screw rod (12), and two rotating pins are symmetrically welded on the outer wall of the sliding sleeve. In the repin hole at the lower end of the pulley support plate (10); The two guide pulley support plates (10) are rectangular flat plates; the upper ends of the two guide pulley support plates (10) have shaft pin holes respectively, and there are pivot pin holes in the upper ends of the two guide pulley support plates (10). A guide pulley shaft (8), the guide pulley shaft (8) is connected with a guide pulley (7), and the guide pulley (7) is in the middle of two guide pulley support plates (10); There are shaft pin holes in the middle of the two guide pulley support plates (10), and there are shaft pins (9) in the shaft pin holes in the middle of the two guide pulley support plates (10), and the shaft pins (9) pass through the two guide The shaft pin hole in the middle part of the pulley support plate (10) and the shaft pin hole at one end of the connecting plate (6), the pivot pin (9) connects the connecting plate (6) to the middle part of the two guide pulley support plates (10); There is pin hole in the middle part of pulley support plate (3), centering pin shaft is worn in the pin hole of fixed pulley support plate (3), and the other end of connecting plate (6) is connected on the two ends of pin shaft.

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