CN212535590U - Mud splashproof valve for oil recovery - Google Patents

Abstract

The utility model discloses a mud splash valve for oil extraction, which relates to the technical field of oil extraction and drilling and mainly solves the problem that drilling fluid is easy to leak; the device includes the valve wall, the top cap is installed at the top of valve wall, the upside of valve wall is provided with first rubber circle, the top cap is provided with the sealing washer in the position of first rubber circle, the circulation section of thick bamboo is installed with the inner circle of top cap to the valve wall, the inner circle of circulation section of thick bamboo is provided with the drilling rod, be provided with the leak protection circle between drilling rod and the circulation section of thick bamboo, the downside of circulation section of thick bamboo evenly is provided with the circulation hole, the downside of valve wall is provided with the mount pad, be provided with the plug post on the mount pad, be provided with the installation disc on the plug post, be provided with the wedge circle on the installation disc, the valve wall is provided with the wedge face at the upside of wedge circle, the utility model discloses an above-mentioned structure has effectively guaranteed the stable circulation of mud, has avoided taking.

Description

Mud splashproof valve for oil recovery

Technical Field

The utility model relates to an oil development technical field specifically is a mud splashproof valve for oil recovery.

Background

The drilling fluid is required to be used in the process of oil exploitation drilling and is used for circularly flushing drill cuttings in a drill hole, the drilling fluid is the premise of ensuring large-depth drilling operation, the drilling fluid is the blood of the drill hole, and the drilling fluid can be divided into clear water, mud, clay-phase-free flushing fluid, emulsion, foam, compressed air and the like according to the components. The clean water is the earliest drilling fluid, does not need to be treated, is convenient to use and is suitable for regions with complete rock stratums and sufficient water sources. The mud is widely used drilling fluid and is mainly suitable for unstable rock formations of hole walls, such as loose rock formations, fracture development, easy collapse and block falling, water swelling and peeling, and the like.

Because the proportion of the mud is simpler, the cost is cheaper, and most of the mud is used as the drilling fluid, but in the use process, the variation range of the pressure intensity in the drill hole is larger, so that the drilling fluid is easy to leak, the area nearby the drill hole is polluted, and unnecessary troubles are caused.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a mud splashproof valve for oil recovery to solve the problem that provides among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

the utility model provides a mud splashproof valve for oil recovery, includes the valve wall, the top cap is installed at the top of valve wall, the upside of valve wall is provided with first rubber circle, the top cap is provided with the sealing washer in the position of first rubber circle, the circulation section of thick bamboo is installed with the inner circle of top cap to the valve wall, the inner circle of circulation section of thick bamboo is provided with the drilling rod, be provided with the leak protection circle between drilling rod and the circulation section of thick bamboo, the downside of circulation section of thick bamboo evenly is provided with the circulation hole, the downside of valve wall is provided with the mount pad, be provided with the plug column on the mount pad, be provided with the installation disc on the plug column, be provided with the spring between plug column and the installation disc, be provided with the wedge circle on the installation disc, the valve wall is provided with the wedge face.

As a further aspect of the present invention: and a second rubber ring is arranged on the wedge-shaped ring.

As a further aspect of the present invention: the top cover is in threaded connection with the circulating cylinder.

As a further aspect of the present invention: and flow guide holes are uniformly formed in the mounting seat.

As a further aspect of the present invention: and the circulating cylinder is provided with a mounting hole.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model forms a main body by the valve wall, the top cover and the circulating cylinder, controls the circulation of slurry by arranging the circulating holes, the matched mounting disc, the wedge-shaped ring, the spring and the mounting seat on the circulating cylinder, thereby ensuring the ordered drilling; the sealing performance of the slurry circulation process is ensured by arranging the first rubber ring, the second rubber ring and the leakage-proof ring; through the structure, the mud is ensured not to leak in the circulating process, and meanwhile, the valve wall can be sealed by rotating the circulating cylinder after the drilling is stopped, the mud circulation is stopped, and the mud cannot leak after the drilling is finished.

Drawings

Fig. 1 is a schematic structural diagram of a mud saver valve for oil recovery.

Fig. 2 is a schematic structural view of a mounting disc in a mud saver valve for oil production.

Fig. 3 is a schematic structural diagram of a top cover in a mud saver valve for oil production.

In the figure: 1-valve wall, 100-bolt hole, 101-first rubber ring, 102-wedge surface, 2-top cover, 20-connecting thread, 21-unthreaded hole, 22-sealing ring, 3-locking bolt, 4-circulating cylinder, 40-circulating hole, 5-mounting hole, 6-mud hole, 7-drill rod, 8-leakproof ring, 9-mounting disc, 90-wedge ring, 91-second rubber ring, 10-mounting seat, 11-diversion hole, 12-plug column and 13-spring.

Detailed Description

In the description of the present invention, it is to be understood that the terms "upper", "lower", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

The technical solution of the present patent will be described in further detail with reference to the following embodiments.

Example 1:

referring to fig. 1-3, a mud splash valve for oil extraction comprises a valve wall 1, a top cover 2 is installed at the top of the valve wall 1, a circulation cylinder 4 is installed on the inner rings of the valve wall 1 and the top cover 2, a drill rod 7 is arranged on the inner ring of the circulation cylinder 4, a leakage-proof ring 8 is arranged between the drill rod 7 and the circulation cylinder 4, circulation holes 40 are uniformly formed in the lower side of the circulation cylinder 4, an installation seat 10 is arranged on the lower side of the valve wall 1, an insertion column 12 is arranged on the installation seat 10, an installation disc 9 is arranged on the insertion column 12, a spring 13 is arranged between the insertion column 12 and the installation disc 9, a wedge ring 90 is arranged on the installation disc 9, a wedge surface 102 is arranged on the upper side of the wedge ring 90 of the valve wall 1, and a mud hole 6 is arranged on the top cover 2.

Specifically, the novel airtight circulating space of valve wall 1 and top cap 2, circulation section of thick bamboo 4, when drilling fluid mud passes through drilling rod 7 and reaches the drill bit position and participate in the drilling operation, the drill chip evenly mixes among the drilling fluid mud, in order to realize the recycling of drilling fluid, needs filter mud, and the mud after will filtering simultaneously is led back again to the drill bit position of drilling rod 7, participates in the drilling.

Further, a second rubber ring 91 is arranged on the wedge ring 90.

Specifically, the second rubber ring 91 is arranged, so that the mud can be further prevented from leaking, and particularly, when the pressure in a drilling well is high, the circulation of the mud is effectively guaranteed, and the mud is prevented from splashing.

Further, the top cover 2 is in threaded connection with the circulating cylinder 4.

Furthermore, flow guide holes 11 are uniformly formed in the mounting base 10.

Further, the circulating cylinder 4 is provided with a mounting hole 5.

Specifically, firstly, the valve wall 1 is fixedly installed and can be installed with a preset foundation, then the circulating cylinder 4 is installed in the valve wall 1, and after the installation is finished, the top cover 2 is installed at the top of the valve wall 1 through the bolt hole 100 and is installed by means of the locking bolt 3.

More specifically, before the drilling operation is started, a steel bar or other rod is inserted into the mounting hole 5 above the circulation cylinder 4, the steel bar is pushed to rotate the circulation cylinder 4, so that the circulation cylinder 4 descends, and the mounting disc 9 drives the wedge ring 90 to descend in the descending process of the circulation cylinder 4, so that a channel for slurry circulation is opened. And then, starting drilling operation, simultaneously pumping mud into the drill rod 7, mixing the drill cuttings after the mud participates in drilling, leaving the drill cuttings through the diversion hole 11, the wedge-shaped surface 102, the circulation hole 40 and the mud hole 6, filtering the drill cuttings through an external filtering device, and finally realizing circulation.

Example 2:

this embodiment is a further improvement and a limitation of embodiment 1 on the basis of embodiment 1.

A mud saver valve for oil recovery, comprising all the components of embodiment 1, and further comprising:

the upper side of the valve wall 1 is provided with a first rubber ring 101, and the top cover 2 is provided with a sealing ring 22 at the position of the first rubber ring 101.

Specifically, the sealing ring 22 on the lower side of the top cover 2 and the first rubber ring 101 on the valve wall 1 are mutually attached to form a sealed space, so that slurry is prevented from leaking between the top cover 2 and the valve wall 1.

The utility model discloses a theory of operation is:

as shown in fig. 1-3, the apparatus is installed by first fixedly mounting the valve wall 1 on the base, then fixedly mounting the top cover 2 on the top of the valve wall 1, then inserting the circulation tube 4 into the top cover 2, and rotating the circulation tube 4 through the mounting hole 5 so that the circulation tube 4 and the top cover 2 are engaged with each other until the circulation tube 4 pushes the mounting disc 9 down to separate the wedge ring 90 from the wedge surface 102, and the slurry is circulated through the diversion hole 11, the circulation hole 40, and the slurry hole 6.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims (5)

1. A mud splash-proof valve for oil extraction comprises a valve wall (1) and is characterized in that a top cover (2) is installed at the top of the valve wall (1), a first rubber ring (101) is arranged on the upper side of the valve wall (1), a sealing ring (22) is arranged on the top cover (2) at the position of the first rubber ring (101), a circulating cylinder (4) is installed between the valve wall (1) and an inner ring of the top cover (2), a drill rod (7) is arranged on the inner ring of the circulating cylinder (4), a leakage-proof ring (8) is arranged between the drill rod (7) and the circulating cylinder (4), circulating holes (40) are uniformly formed in the lower side of the circulating cylinder (4), an installation seat (10) is arranged on the lower side of the valve wall (1), an insertion column (12) is arranged on the installation seat (10), an installation disc (9) is arranged on the insertion column (12), and a spring (13) is arranged between the insertion column (12) and the installation disc, the mounting disc (9) is provided with a wedge-shaped ring (90), the valve wall (1) is provided with a wedge-shaped surface (102) on the upper side of the wedge-shaped ring (90), and the top cover (2) is provided with a slurry hole (6).

2. An oil recovery mud saver valve according to claim 1, wherein the wedge ring (90) is provided with a second rubber ring (91).

3. An oil recovery mud saver valve according to claim 2, wherein the top cover (2) is in threaded connection with the circulation barrel (4).

4. The mud saver valve for oil extraction as claimed in claim 1, wherein the mounting base (10) is uniformly provided with flow guide holes (11).

5. An oil recovery mud saver valve according to claim 1, wherein the circulation cylinder (4) is provided with mounting holes (5).

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