CN210264594U - Mud circulation tool for logging instrument punching fishing - Google Patents

Abstract

The utility model relates to a mud circulation tool for punching and salvaging a logging instrument, which comprises a mud circulation tray and a cable quick joint, wherein the mud circulation tray is arranged in a water hole of a drill rod, a central hole of the mud circulation tray is opened to one side to form a tray C-shaped groove, and the tray C-shaped groove is communicated along the full-height direction of the mud circulation tray; the cable quick connector comprises a quick connector female head and a quick connector male head, the quick connector female head is connected with a winch-end cable head, the quick connector male head is connected with a wellhead-end cable head, a male annular groove is formed in the circumference of the lower end of the quick connector male head, and a male annular convex ring is formed below the male annular groove; the top surface of the mud circulation tray is a plane, a C-shaped clamping frame capable of clamping the male head annular convex ring is arranged on the top surface, the C-shaped clamping frame and the mud circulation tray are coaxial, and the opening direction of the C-shaped clamping frame is consistent with that of the C-shaped groove of the tray. The mud circulation tool can enable the male head of the quick connector to be quickly positioned and accurately centered.

Description

Mud circulation tool for logging instrument punching fishing

Technical Field

The utility model relates to a logging instrument fishing tool that pierces through, in particular to mud circulation instrument of usefulness is salvaged to logging instrument that pierces through belongs to oil exploration logging tool technical field.

Background

And after the logging cable and the downhole instrument meet the blockage in the well, a blockage releasing tool is required to be adopted to release the blockage of the downhole cable and the downhole instrument. In order to safely salvage instruments from the well, the downhole tool is a common salvage method by using a salvage barrel and a piercing salvage; the success rate of the piercing fishing is higher and the piercing fishing is wider. The center-through fishing is that a drill rod is connected with a fishing barrel, a cable passes through the middle of the drill rod, and the fishing barrel touches the melon along the cable, so that the purpose of fishing the instrument is achieved.

The cable is clamped by a T-shaped cable clamp for a well mouth, then the cable is placed downwards, the T-shaped cable clamp is clamped at the well mouth, the cable is cut off at a position 2 meters away from the well mouth, a cable head at the well mouth end penetrates through a fishing tool, and a mushroom head is installed after a rope cap box is sleeved on the cable head, so that a male head of the logging cable quick connector is formed. The cable head at the winch end is sleeved with a guide head and a rope cap box, a female head of the logging cable quick connector is formed after the female head is installed on the rope cap box, a weighting rod is installed on a cable above the female head and is fixed by a clamp, then the male head and the female head of the logging cable quick connector are in butt joint, all connection parts and fixing parts of the logging cable quick connector are checked, and the logging cable quick connector is firm and reliable. Then connecting a fishing tool, lowering the fishing tool and carrying out piercing fishing.

The change of the well condition should be closely paid attention to when salvaging, and the mud circulation is arranged in time according to the needs of well control, and the concrete operation process is as follows: placing a stable mud circulation tray horizontally in a drill pipe water hole, wherein the mud circulation tray is provided with a tray C-shaped groove which is longitudinally communicated, slowly placing a cable, stably seating a male head of a quick connector on the mud circulation tray, and detaching a female connector and fixing the female connector on a well platform; connecting the kelly bar on the drill rod, and starting a pump to circulate the slurry. And after circulation is finished, detaching the kelly bar, connecting the quick connector, straightening the cable, taking out the slurry circulation tray, repeatedly connecting the kelly bar and slowly lowering the drilling tool.

At present, when the mud is recycled in the center-piercing fishing operation, the steps of using and placing the mud circulation tray are complicated, the inclination is very easy to occur, the cable quick connector is not placed in the center, the time for placing and withdrawing the mud circulation tray is too long, and the cable quick connector is easy to fall into a well due to the easy inclination of the mud circulation tray, so that the safety accident that the cable falls into the well is caused.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome the problem that exists among the prior art, provide a mud circulation instrument of usefulness is salvaged to logging instrument cross-core, can make the public head of quick-operation joint fix a position fast and accurate placed in the middle, lay and withdraw simple and convenient high-efficient of mud circulation tray.

In order to solve the technical problem, the utility model discloses a mud circulation instrument that logging instrument punching was salvaged and was used, including mud circulation tray and cable quick-operation joint, mud circulation tray arranges in the water hole of drilling rod, the centre bore of mud circulation tray is to one side opening formation tray C-shaped groove, tray C-shaped groove link up along the full height direction of mud circulation tray; the cable quick connector comprises a quick connector female head and a quick connector male head, the quick connector female head is connected with a winch-end cable head, the quick connector male head is connected with a wellhead-end cable head, a male annular groove is formed in the circumference of the lower end of the quick connector male head, and a male annular convex ring is formed below the male annular groove; the top surface of mud circulation tray be the plane and be equipped with on the top surface with can the joint public head C shape card frame of cyclic annular bulge circle, C shape card frame with mud circulation tray coaxial line, just the opening direction of C shape card frame with the opening direction in tray C groove is unanimous.

Compared with the prior art, the utility model discloses following beneficial effect has been obtained: when the mud is circulated, the male head of the quick connector slides in from the opening of the C-shaped clamping frame until the annular convex ring of the male head is clamped in the C-shaped clamping frame, the C-shaped clamping frame plays a role of positioning by a mountain, and simultaneously, the coaxial line of the male head of the quick connector and the mud circulation tray is ensured, the cable is slowly lowered, the male head of the quick connector is stably seated on a water hole step in a drilling tool with the mud circulation tray, and the female head of the quick connector is detached and fixed on a well platform; connecting the kelly bar on the drill rod, and starting a pump to circulate the slurry. After the circulation mud is finished, the female head of the quick connector is connected with the male head of the quick connector, the cable is lifted up to slide out of the mud circulation tray from the annular convex ring of the male head of the quick connector and the opening of the C-shaped clamping groove of the C-shaped clamping frame, and the mud circulation process is finished. The use is quick and convenient, the operation time is shortened, and the work efficiency is improved.

As the utility model discloses an optimal scheme, the top of C shape card frame to the centre bore axis direction of mud circulation tray stretches out, the top of C shape card frame with form C shape draw-in groove between the top surface of mud circulation tray, public cyclic annular protruding circle inlays the dress and is in the C shape draw-in groove. Half of the circumference of the annular convex ring of the male head is clamped in the C-shaped clamping groove, so that the male head of the quick connector and the slurry circulation tray are coaxial and cannot be inclined, and the slurry circulation tray is simple, convenient and efficient to place and withdraw.

As a further preferred aspect of the present invention, the lower portion of the slurry circulation tray is a cylinder, and the upper portion of the slurry circulation tray is a cone having a large upper portion and a small lower portion. The lower cylinder is inserted into the water hole of the drill rod, and the upper cone is placed on the step on the upper portion of the drill rod, so that the slurry circulation tray is centered and stable relative to the water hole.

As a further preferred aspect of the present invention, a plurality of slurry holes, each of which is formed on the same circumference of the top surface of the slurry circulation tray, are formed at the lower ends of the slurry holes respectively and are communicated with the lower end of the conical surface of the cone. The circumference of the slurry circulation tray is provided with the slurry holes which are communicated up and down, so that the passing section of the slurry is increased on the basis of the center hole, and the resistance of the slurry in circulation is reduced.

As a further preferred aspect of the present invention, the slurry holes are evenly distributed three on the top surface of the slurry circulation tray.

As a further preferable aspect of the present invention, it is three that the slurry holes are distributed on three phases other than the tray C-shaped groove.

Drawings

The invention will be described in further detail with reference to the drawings and the detailed description, which are provided for reference and illustration purposes only and are not intended to limit the invention.

Fig. 1 is a front view of the mud circulation tray of the present invention.

Fig. 2 is a top view of fig. 2.

FIG. 3 is a schematic structural view of a male head of a quick connector.

FIG. 4 is a schematic view of the male quick connector after positioning of the mud circulation tray.

In the figure: 1. a slurry circulation tray; 1a, a tray C-shaped groove; 1b, slurry holes; 2. a quick connector male; 2a, a male annular groove; 2b, a male annular convex ring; 3, C-shaped clamping frames; 3a.C shape card slot.

Detailed Description

As shown in fig. 1 to 4, the mud circulation tool for punching and fishing the logging instrument of the present invention comprises a mud circulation tray 1 and a cable quick coupling, wherein the mud circulation tray 1 is arranged in a water hole of a drill rod, a central hole of the mud circulation tray 1 is opened to one side to form a tray C-shaped groove 1a, and the tray C-shaped groove 1a is through along the full height direction of the mud circulation tray 1; the cable quick connector comprises a quick connector female head and a quick connector male head 2, the quick connector female head is connected with a winch-end cable head, the quick connector male head 2 is connected with a wellhead-end cable head, a male annular groove 2a is arranged on the circumference of the lower end of the quick connector male head 2, and a male annular convex ring 2b is formed below the male annular groove 2 a; the top surface of the mud circulation tray 1 is a plane, a C-shaped clamping frame 3 which can be clamped with the male annular convex ring 2b is arranged on the top surface, the C-shaped clamping frame 3 and the mud circulation tray 1 are coaxial, and the opening direction of the C-shaped clamping frame 3 is consistent with that of the C-shaped groove 1a of the tray.

When the mud is circulated, the male head 2 of the quick connector slides in from the opening of the C-shaped clamping frame 3 until the annular convex ring 2b of the male head is clamped in the C-shaped clamping frame 3, the C-shaped clamping frame 3 plays a role of backer positioning, the coaxial line of the male head 2 of the quick connector and the mud circulation tray 1 is ensured, the cable is slowly lowered, the male head 2 of the quick connector with the mud circulation tray 1 is stably seated on a water hole step in a drilling tool, and the female head of the quick connector is detached and fixed on a well platform; connecting the kelly bar on the drill rod, and starting a pump to circulate the slurry. After the circulation mud is finished, the female head of the quick connector is connected with the male head 2 of the quick connector, the cable is lifted up to slide out of the mud circulation tray 1 from the opening parts of the annular convex ring 2b of the male head of the quick connector 2 and the C-shaped clamping groove 3a of the C-shaped clamping frame 3, and the mud circulation process is finished.

The top of the C-shaped clamping frame 3 extends towards the axis direction of the central hole of the slurry circulation tray 1, a C-shaped clamping groove 3a is formed between the top of the C-shaped clamping frame 3 and the top surface of the slurry circulation tray 1, and the male annular convex ring 2b is embedded in the C-shaped clamping groove 3a. The half cycle of the male head annular convex ring 2b is clamped in the C-shaped clamping groove 3a, so that the male head 2 of the quick connector and the slurry circulation tray 1 are coaxial and cannot be inclined.

The lower part of the slurry circulation tray 1 is a cylinder, and the upper part of the slurry circulation tray 1 is a cone with a large upper part and a small lower part. The lower cylinder is inserted in the water hole of the drill rod and the upper cone rests on the step on the upper part of the drill rod, so that the mud circulation tray 1 is centered and stable relative to the water hole.

A plurality of slurry holes 1b are arranged on the same circumference of the top surface of the slurry circulation tray 1, and the lower ends of the slurry holes 1b are respectively communicated with the lower end of the conical surface of the cone. The circumference of the mud circulation tray 1 is provided with the mud holes 1b which are communicated up and down, so that on the basis of the center hole, the passing section of mud is increased, and the resistance in mud circulation is reduced.

The slurry holes 1b may be evenly distributed three times on the top surface of the slurry circulation tray 1. Three slurry holes 1b are distributed on three phases except for the tray C-shaped grooves 1a.

The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention. In addition to the above embodiments, the present invention may have other embodiments. All the technical solutions formed by adopting equivalent substitutions or equivalent transformations fall within the protection scope claimed by the present invention. The undescribed technical features of the present invention can be realized by or using the prior art, and are not described herein again.

Claims (6)

1. A mud circulation tool for punching and fishing of a logging instrument comprises a mud circulation tray and a cable quick connector, wherein the mud circulation tray is arranged in a water hole of a drill rod, a central hole of the mud circulation tray is opened towards one side to form a tray C-shaped groove, and the tray C-shaped groove is communicated along the full-height direction of the mud circulation tray; cable quick-operation joint includes female head of quick-operation joint and the public head of quick-operation joint, the female head of quick-operation joint is connected with winch termination cable head, the public head of quick-operation joint is connected its characterized in that with well head termination cable head: a male annular groove is formed in the circumference of the lower end of the male head of the quick connector, and a male annular convex ring is formed below the male annular groove; the top surface of mud circulation tray be the plane and be equipped with on the top surface with can the joint public head C shape card frame of cyclic annular bulge circle, C shape card frame with mud circulation tray coaxial line, just the opening direction of C shape card frame with the opening direction in tray C groove is unanimous.

2. The mud circulation tool for logging instrument coring fishing of claim 1, wherein: the top of the C-shaped clamping frame extends towards the axis direction of the central hole of the slurry circulation tray, a C-shaped clamping groove is formed between the top of the C-shaped clamping frame and the top surface of the slurry circulation tray, and the male annular convex ring is embedded in the C-shaped clamping groove.

3. The mud circulation tool for logging instrument coring fishing of claim 1, wherein: the lower part of the slurry circulation tray is a cylinder, and the upper part of the slurry circulation tray is a cone with a large upper part and a small lower part.

4. The tool of claim 3, wherein: and a plurality of slurry holes are formed in the same circumference of the top surface of the slurry circulation tray, and the lower ends of the slurry holes are communicated with the lower end of the conical surface of the cone respectively.

5. The tool of claim 4, wherein: the slurry holes are evenly distributed on the top surface of the slurry circulation tray.

6. The tool of claim 5, wherein: the three slurry holes are distributed on three phases except the C-shaped groove of the tray.

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