Optical cable protector

Abstract

The utility model discloses an optical cable protector which comprises a first slip and a second slip which are the same. The first slip and the second slip are connected in a buckled mode. Each of the first slip and the second slip comprises a clamping step arranged at the edge part of the top surface of a slip body, a fixing notch formed in the side wall of the slip body, and a slip connecting pin groove and an optical cable groove which are formed in the side wall, and the optical cable groove is used for accommodating an optical cable. The slips are adopted to embed the optical cable into the optical cable groove, so that the optical cable is fixed, and the optical cable is prevented from being damaged due to the action of fluid in the process of tripping in or after tripping in of an oil pipe.

Description

TECHNICAL FIELD

[0001] The utility model relates to oil well detection technical field especially relates to a cable protector. BACKGROUND

[0002] Optical fiber has been widely used in military industry, communication, fire fighting, building, etc. Optical fiber has the advantages of not being interfered by electromagnetic, corrosion resistance, passive real-time monitoring, electrical insulation, good explosion resistance, small volume, light weight, winding, high sensitivity, long service life, long transmission distance, easy maintenance, etc. Therefore, in recent years, in the industries of oil and gas, geothermal energy development, optical fiber has been paid more and more attention and importance, mainly used for temperature measurement and pressure measurement, but due to the material of optical fiber, it is fragile and easy to break, poor in compression and extrusion resistance, even if armored during cabling, it is also easy to be damaged in the complex and harsh environment of the well:

[0003] First, the optical cable is lowered into the well. The optical cable is laid on the outer wall of the casing and lowered into the well with the casing. The casing and the well wall will be extruded and rubbed, and the optical cable between them is easy to be damaged;

[0004] Second, casing lowering operation. The casing centralizer is used in the operation, which plays a role in keeping the casing in the center of the wellbore and ensuring the cement slurry to return to the wellhead, finally ensuring good cementing quality. However, the centralizer is easy to deform, move up and rotate due to wellbore shrinkage, block falling and sand settling during casing lowering operation. The centralizer is made of steel, which is hard and brittle, and the cross section is sharp, which is a great risk to the optical cable laid on the outer wall of the casing;

[0005] Third, cementing operation. The cement slurry enters from the casing to the bottom of the well, and then returns to the wellhead from the annulus between the casing and the well wall. During the returning process, the optical cable is impacted by the cement slurry and various rock debris and impurities in the well, which poses a risk of damage to the optical cable.

[0006] Therefore, how to protect the optical cable from damage to the greatest extent is a problem urgently needed to be solved in the field. INVENTION CONTENTS

[0007] Therefore, the purpose of the utility model is to provide an optical cable protector, which uses slips to embed the optical cable into the optical cable groove, plays a fixing role on the optical cable, and avoids damage to the optical cable caused by fluid during the lowering of the oil pipe or after the lowering.

[0008] In order to achieve the above object, the utility model provides a kind of optical cable protector, comprising: identical first slips and second slips;The first slip and the second slip are connected by snap-fit;The first slip and the second slip all include: the clamping step being arranged at the top surface edge portion of slip body, the fixed notch being arranged on the sidewall of slip body and the slip connection pin groove and optical cable groove being arranged on the sidewall, and the optical cable groove is used to accommodate optical cable.

[0009] Further preferably, the clamping step includes an upper edge step and a lower edge step;The upper edge step is connected to the upper end surface of the tubing coupling position, and the lower edge step is connected to the lower end surface of the tubing coupling position.

[0010] Further preferably, the upper and lower edges of the clamping step are provided with sawtooth-shaped protrusions.

[0011] Further preferably, the optical cable groove is a semi-annular groove.

[0012] Further preferably, the diameter of the semi-annular groove is greater than the diameter of the optical cable, and the caliber of the annular opening is equal to the diameter of the optical cable.

[0013] Further preferably, the first slip and the second slip are fixed by snap-fit through the slip connection pin groove.

[0014] Further preferably, after the first slip and the second slip are snap-fit, the fixed notch is connected to the assembly key of the tubing coupling position.

[0015] The optical cable protector disclosed in the present application uses slips to embed optical cables into optical cable grooves, which fixes the optical cables and avoids damage to the optical cables caused by fluid during the process of lowering the oil pipe or after the oil pipe is lowered.

[0016] The present application sets a clamping step at the top surface edge portion of the slip body and sets an assembly key at the tubing coupling position to cooperate with the fixed notch, which avoids the rotation of the slip driving the rotation of the optical cable. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 The utility model provides a structural schematic diagram.

[0018] Figure 2 The utility model is a schematic diagram of the optical cable groove.

[0019] Figure 3 The utility model is a schematic diagram of the edge portion of the clamping step.

[0020] In the figure: 1, optical cable groove 2, clamping step 3, slip connection pin groove 4, fixed notch. DETAILED DESCRIPTION

[0021] The utility model is further explained in detail through the drawings and specific embodiments.

[0022] As shown in the figure, the utility model provides a kind of optical cable protector, including: identical first slip and second slip;The first slip and second slip are connected by buckling;The first slip and second slip all include: the clamping step 2 being arranged at the top surface edge portion of slip body, the fixed notch 4 being arranged on the sidewall of slip body and the slip connecting pin slot 3 and optical cable groove 1 being arranged on the sidewall, and the optical cable groove is used to accommodate optical cable.

[0023] It needs to be explained that the clamping step includes upper edge step and lower edge step;The upper edge step is clamped in the upper end surface of the position of oil pipe coupling, and the lower edge step is clamped in the lower end surface of the position of another oil pipe coupling.Fixing of two slips (first slip and second slip) after buckling forms a circular ring and is wrapped around the outside of oil pipe, the upper edge step is embedded in the upper end surface of the position of coupling, and the lower edge step is clamped in the lower end surface of the position of another oil pipe coupling (adjacent), to ensure the fixing of slip in the longitudinal direction.

[0024] Further preferably, the first slip and the second slip are fixed by buckling through the slip connecting pin slot, and the two slips are clamped on the upper and lower end surfaces of the conventional oil pipe or the perforated oil pipe coupling, and after being connected together, an integrated optical cable protector is formed.The pin slot is through in left and right directions, and the two slips are fixed by inserting the pin into the slip connecting pin slot, to ensure the fixing of slip in the transverse direction, so that the slip can fasten the optical fiber around the oil pipe and not be disturbed by fluid.

[0025] As Figure 2 , the optical cable groove is a semi-circular groove.Further preferably, the diameter of the semi-circular groove is greater than the diameter of the optical cable, and the caliber of the annular opening is equal to the diameter of the optical cable.The inlet facilitates the clamping of the optical cable, the groove accommodates and protects the optical cable, and the optical cable is not easy to come out.

[0026] As Figure 3 , after the first slip and the second slip are buckled, the fixed notch is connected with the assembly key of the position of oil pipe coupling.The anti-rotation function of the fixed notch is realized;It can be conveniently installed in the coupling position of the conventional oil pipe or the perforated oil pipe, and further preferably, the upper and lower edges of the clamping step are provided with sawtooth-shaped protrusions.The protrusion is another means to achieve anti-rotation.

[0027] Obviously, the above embodiments are only examples for clearly illustrating, and not limit the embodiments.The ordinary skilled in the art can make other different forms of changes or variations on the basis of the above description.Here, all embodiments need not and cannot be exhausted.The obvious changes or variations derived therefrom are still within the protection scope of the utility model.

Claims

1. An optical cable protector, characterized by, The utility model relates to a first slip and a second slip are same; The first slip and the second slip are snap-fit connected; The first slip and the second slip each include a clamping step arranged on a top surface edge portion of a slip body, a fixing notch arranged on a side wall of the slip body, a slip connecting pin groove arranged on the side wall, and an optical cable groove for accommodating an optical cable. The clamping step includes an upper edge step and a lower edge step, the upper edge step is clamped on an upper end surface of a tubing coupling position, and the lower edge step is clamped on a lower end surface of the tubing coupling position.

2. The fiber optic cable protector of claim 1, wherein, Upper and lower edges of the clamping step are provided with sawtooth-shaped protrusions.

3. The fiber optic cable protector of claim 1, wherein, The optical cable groove is a semi-annular groove.

4. The fiber optic cable protector of claim 1, wherein, A diameter of the semi-annular groove is greater than a diameter of the optical cable, and a caliber length of an annular opening is equal to the diameter of the optical cable.

5. The fiber optic cable protector of claim 4, wherein, The first slip and the second slip are snap-fit fixed through the slip connecting pin groove.

6. The fiber optic cable protector of claim 1, wherein, After the first slip and the second slip are snap-fit, the fixing notch is connected with an assembly key of the tubing coupling position.

7. The fiber optic cable protector of claim 1, wherein, ​

Images