CN216077022U

CN216077022U - Drilling fluid extraction protector

Info

Publication number: CN216077022U
Application number: CN202121700703.7U
Authority: CN
Inventors: 王志军; 李文超; 刘昕; 董礼; 孙博文; 桑茂鹏
Original assignee: Tianjin Land & Ocean Petroleum Equipment Systems Engineering Co ltd
Current assignee: Tianjin Land & Ocean Petroleum Equipment Systems Engineering Co ltd
Priority date: 2021-07-26
Filing date: 2021-07-26
Publication date: 2022-03-18
Anticipated expiration: 2031-07-26

Abstract

The utility model discloses a drilling fluid extraction protection device, which comprises an outlet cover, a buffer tube and an inlet cover, wherein the outlet cover, the buffer tube and the inlet cover are sequentially arranged from top to bottom; the center of entrance lid, export lid is equipped with the round hole, and the buffer tube passes through round hole and outside intercommunication, the round hole department of export lid is equipped with the protection valve, be equipped with the floater in the buffer tube, the floater floats to jacking protection valve seals the protection valve that the export was covered when the buffer tube top. The utility model has the advantages and beneficial effects that: the device realizes automatic full sealing after the drilling fluid is fully filled with the drilling fluid, and can effectively prevent the drilling fluid from continuously entering into a pipeline and an instrument at the back, thereby playing the effect of protecting the subsequent pipeline and the instrument and avoiding the instrument from being damaged.

Description

Drilling fluid extraction protector

Technical Field

The utility model relates to the technical field of gas logging, in particular to a drilling fluid extraction protection device.

Background

The gas logging is characterized in that in the drilling process, the drilling fluid is degassed through stirring, the generated sample gas is pumped to an instrument end, the composition and the content of the sample gas are measured and analyzed, the property of formation fluid is judged according to the composition and the content, the reservoir is indirectly evaluated, the oil-gas layer can be timely and effectively found, and early warning is carried out on engineering accidents such as well kick, blowout and the like. The existing sample gas extraction device has the following problems: after the drilling fluid is pumped into the gas pipeline, the drilling fluid is easily pumped into the instrument without special protection measures, so that the instrument is damaged.

Disclosure of Invention

The utility model aims to overcome the defects in the prior art and provides a drilling fluid extraction protection device.

The technical scheme of the utility model is as follows:

a drilling fluid extraction protection device comprises an outlet cover, a buffer tube and an inlet cover which are sequentially arranged from top to bottom; the center of entrance lid, export lid is equipped with the round hole, and the buffer tube passes through round hole and outside intercommunication, the round hole department of export lid is equipped with the protection valve, be equipped with the floater in the buffer tube, the floater floats to jacking protection valve seals the protection valve that the export was covered when the buffer tube top.

Further, the outlet cover comprises an outlet joint, an outlet joint gasket, an outlet cover body, an outlet cover gasket and the protection valve; one end of the outlet connector is provided with a convex edge connector, the other end of the outlet connector is provided with a thread, and the thread end of the outlet connector is connected with the upper end of the round hole in the outlet cover main body through an outlet connector sealing gasket; the outlet cover main body is connected with the buffer tube through a screw thread at the end part of the buffer tube, and an outlet cover sealing gasket is arranged at the joint; the lower end of the round hole of the outlet cover main body is connected with the protection valve through a screw thread.

Further, the inlet cover comprises an inlet joint, an inlet joint gasket, an inlet cover body, and an inlet cover gasket; one end of the inlet joint is provided with a convex edge connector, the other end of the inlet joint is provided with a thread, and the thread end of the inlet joint is connected with the lower end of the round hole in the inlet cover main body through an inlet joint sealing gasket; the entry lid main part with the buffer tube passes through the screw thread at buffer tube tip and links to each other, and the junction is equipped with the sealed pad of entry lid.

Further, the protection valve comprises a valve seat, a valve head and a valve body; the valve comprises a valve body, a valve seat and a valve seat, wherein the center of the valve body is provided with a through hole, the outer side of the valve body is in a regular hexagon shape, the upper part of the valve body is provided with a hollow threaded connecting part, and the valve seat is fixedly connected with the valve body; the valve head slides and sets up in the through-hole of valve body, and the valve head includes pole portion and sets up the conical head portion on pole portion top, and the pole portion bottom extends to under the valve body, and behind the liquid admission device, the floater rises, and the floater floats to when the buffer tube top, through valve head pole portion jack-up valve head, make the conical head portion and the valve seat of valve head closely laminate.

Furthermore, a gas inlet is formed in the side wall of the valve body and is communicated with the through hole in the valve body, the communicating position of the gas inlet and the through hole is higher than the top height of the valve head when the valve head is at the initial position, and when the protection valve is not sealed, gas in the buffer pipe is discharged from the outlet joint through the gas inlet.

Furthermore, strip-shaped grains are arranged on the outer sides of the outlet cover main body and the inlet cover main body, so that screwing is convenient to carry out.

The utility model has the advantages and beneficial effects that: the device realizes automatic full sealing after the drilling fluid is fully filled with the drilling fluid, and can effectively prevent the drilling fluid from continuously entering into a pipeline and an instrument at the back, thereby playing the effect of protecting the subsequent pipeline and the instrument and avoiding the instrument from being damaged.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic diagram of a split state according to the present invention;

FIG. 3 is a schematic view of the outlet cover of the present invention in a disassembled state;

FIG. 4 is a schematic view illustrating a disassembled state of the inlet cover according to the present invention;

fig. 5 is a schematic diagram of the protection valve of the present invention in a disassembled state.

Detailed Description

The present invention will be described in further detail with reference to specific examples. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; the two components can be directly connected or indirectly connected through an intermediate medium, and the two components can be communicated with each other. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

As shown in fig. 1 and 2, a drilling fluid extraction protection device comprises an outlet cover 4, a buffer tube 1 and an inlet cover 3 which are arranged from top to bottom in sequence; the center of entrance cover 3, export lid 4 is equipped with the round hole, and buffer tube 1 passes through round hole and outside intercommunication, the round hole department of export lid 4 is equipped with protection valve 45, be equipped with floater 2 in the buffer tube 1, floater 2 come up to jacking protection valve 45 seals the protection valve on the lid 4 of exporting during buffer tube 1 top.

As shown in fig. 3, the outlet cover 4 includes an outlet joint 42, an outlet joint gasket 43, an outlet cover main body 41, an outlet cover gasket 44, and the protection valve 45; one end of the outlet joint 42 is provided with a convex edge connector, the other end of the outlet joint is provided with a thread, and the thread end of the outlet joint is connected with the upper end of the round hole on the outlet cover main body 41 through an outlet joint sealing gasket 43; the outlet cover main body 41 is connected with the buffer tube 1 through a screw thread at the end part of the buffer tube, and an outlet cover sealing gasket 44 is arranged at the connection part; the lower end of the circular hole of the outlet cover body 41 is screwed with the protection valve 45.

As shown in fig. 4, the inlet cover 3 includes an inlet joint 32, an inlet joint gasket 33, an inlet cover main body 31, an inlet cover gasket 34; one end of the inlet joint 32 is provided with a convex edge connector, the other end of the inlet joint is provided with a thread, and the thread end of the inlet joint is connected with the lower end of the round hole on the inlet cover main body 31 through an inlet joint sealing gasket 33; the inlet cover main body 31 and the buffer tube 1 are connected by a screw thread at the end of the buffer tube, and an inlet cover gasket 34 is provided at the joint.

As shown in fig. 5, the protection valve 45 includes a valve seat 452, a valve head 453, and a valve body 451; the center of the valve body 451 is provided with a through hole, the outer side of the valve body 451 is regular hexagon, the upper part of the valve body 451 is provided with a hollow threaded connection part, and the valve seat 452 is fixedly connected with the valve body 451; the valve head 453 is slidably disposed in the through hole of the valve body 451, the valve head 453 includes a rod portion and a tapered portion disposed at the top end of the rod portion, the bottom of the rod portion extends below the valve body 451, when the liquid enters the device, the floating ball 2 rises, the floating ball 2 floats to the top of the buffer tube 1, the valve head 453 is jacked up by the valve head rod portion, and the tapered portion of the valve head 453 is tightly attached to the valve seat 452.

The side wall of the valve body 451 is provided with a gas inlet 454, the gas inlet 454 is communicated with a through hole in the valve body 451, the communication position of the gas inlet 454 and the through hole is higher than the top height of the valve head 453 at the initial position, when the protection valve is not sealed, gas in the buffer pipe is discharged from the outlet joint through the gas inlet, and the valve head is prevented from being pushed when the gas flows out, so that the protection valve is closed.

The present invention has been described in detail with reference to the examples, but the description is only for the preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the utility model.

Claims

1. A drilling fluid extraction protection device is characterized by comprising an outlet cover, a buffer tube and an inlet cover which are sequentially arranged from top to bottom; the center of entrance lid, export lid is equipped with the round hole, and the buffer tube passes through round hole and outside intercommunication, the round hole department of export lid is equipped with the protection valve, be equipped with the floater in the buffer tube, the floater floats to jacking protection valve seals the protection valve that the export was covered when the buffer tube top.

2. The drilling fluid extraction guard of claim 1, wherein the outlet cover comprises an outlet joint, an outlet joint gasket, an outlet cover body, an outlet cover gasket, and the protection valve; one end of the outlet connector is provided with a convex edge connector, the other end of the outlet connector is provided with a thread, and the thread end of the outlet connector is connected with the upper end of the round hole in the outlet cover main body through an outlet connector sealing gasket; the outlet cover main body is connected with the buffer tube through a screw thread at the end part of the buffer tube, and an outlet cover sealing gasket is arranged at the joint; the lower end of the round hole of the outlet cover main body is connected with the protection valve through a screw thread.

3. The drilling fluid extraction guard of claim 1, wherein the inlet cover comprises an inlet joint, an inlet joint gasket, an inlet cover body, an inlet cover gasket; one end of the inlet joint is provided with a convex edge connector, the other end of the inlet joint is provided with a thread, and the thread end of the inlet joint is connected with the lower end of the round hole in the inlet cover main body through an inlet joint sealing gasket; the entry lid main part with the buffer tube passes through the screw thread at buffer tube tip and links to each other, and the junction is equipped with the sealed pad of entry lid.

4. The drilling fluid extraction guard of claim 1, wherein the protection valve comprises a valve seat, a valve head, and a valve body; the valve comprises a valve body, a valve seat and a valve seat, wherein the center of the valve body is provided with a through hole, the outer side of the valve body is in a regular hexagon shape, the upper part of the valve body is provided with a hollow threaded connecting part, and the valve seat is fixedly connected with the valve body; the valve head slides and sets up in the through-hole of valve body, and the valve head includes pole portion and sets up the conical head portion on pole portion top, and the pole portion bottom extends to under the valve body, and behind the liquid admission device, the floater rises, and the floater floats to when the buffer tube top, through valve head pole portion jack-up valve head, make the conical head portion and the valve seat of valve head closely laminate.

5. The drilling fluid extraction protector of claim 4, wherein the side wall of the valve body is provided with a gas inlet, the gas inlet is communicated with a through hole in the valve body, and the communication between the gas inlet and the through hole is higher than the top height of the valve head in the initial position.

6. The drilling fluid extraction protector of claim 2, wherein the outlet cover body and the inlet cover body are provided with striped lines on the outer sides.