High-performance well completion hanger

Abstract

The utility model discloses a high-performance well completion hanger, which relates to the technical field of well completion hangers and comprises an alloy pipe body, a plurality of sealing rubber rings are sleeved on the alloy pipe body, a sleeve is mounted at the lower end of the alloy pipe body, and a well cementation accessory is sleeved at the lower end of the sleeve. The anchoring and sealing effects are achieved after the pipe body is expanded and extruded, the problems that anchoring is not stable and the sealing effect is poor are solved, and the anchoring reliability and sealing performance of the hanger are improved. The T-shaped fixing block is matched with the central pipe and the tail pipe rubber plug, so that the tail pipe rubber plug and the central pipe are connected and are disconnected and separated after being pressed, the problem that the tail pipe rubber plug and the central pipe are difficult to separate is solved, and the convenience of component separation in the construction process is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of completion hanger, especially high performance completion hanger. BACKGROUND

[0002] In the completion operation of oil and gas exploitation, the high performance completion hanger as the core equipment of the expansion pipe technology bears the key functions of connecting the casing, anchoring the well wall and sealing the ring hole, and the rationality of its structural design directly affects the completion quality and the stability of long-term oil and gas exploitation.

[0003] However, the traditional completion hanger has significant defects in the anchoring and sealing links: after the alloy pipe body expands, the anchoring structure is not enough to fit the well wall, and the sealing assembly is prone to sealing failure due to extrusion deformation or uneven stress, thereby causing risks such as oil and gas leakage and hanger falling off. Specifically, the anchoring components of the existing hanger lack reliable mechanical support and sealing cooperation mechanism, and the sealing rubber ring is difficult to bear uniform stress during the expansion process, resulting in poor anchoring stability and being unable to adapt to high pressure and high corrosion environment in complex well conditions. In addition, such problems will further aggravate the construction risk and increase the cost of later workover, seriously restricting the efficiency and safety of completion operation, therefore, the above problems need to be improved. SUMMARY

[0004] The utility model discloses a high performance completion hanger which is proposed to solve the problems in the prior art.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a high performance completion hanger, comprising an alloy pipe body, a plurality of sealing rubber rings are sleeved on the alloy pipe body, and a casing is installed at the lower end of the alloy pipe body, and a well cementing accessory is sleeved at the lower end of the casing.

[0006] Preferably, a central pipe is vertically installed in the inner cavity of the alloy pipe body, and a preventer is sleeved on the upper end of the central pipe.

[0007] Preferably, a pipe wall cleaner is sleeved on the lower end of the central pipe, and a first pipe body impact block is also sleeved on the lower end of the central pipe, and a second pipe body impact block is installed at the lower end of the first pipe body impact block.

[0008] Preferably, a plurality of equidistant fixing grooves are formed on the outer side of the lower end of the central pipe.

[0009] Preferably, a fixing block is installed in each of the fixing grooves formed on the central pipe, and a tail pipe rubber plug is installed at the bottom end of the central pipe.

[0010] The tail pipe rubber plug is provided with a fixing groove at the upper end, which corresponds to the lower end of the center pipe.

[0011] Compared with the prior art, the utility model has the advantages that: the utility model discloses a cooperation of the sealing rubber ring and the alloy pipe body, which realizes anchoring and sealing after the pipe body is expanded and extruded, solves the problems of unstable anchoring and poor sealing effect, improves the reliability and sealing property of the hanger, and the cooperation of the fixing block, the center pipe and the tail pipe rubber plug realizes the connection of the tail pipe rubber plug and the center pipe and the separation after being pressed, solves the separation difficulty of the tail pipe rubber plug and the center pipe, and improves the convenience of component separation in the construction process. BRIEF DESCRIPTION OF DRAWINGS

[0012] The accompanying drawings, which are included to provide a further understanding of the utility model, form a part of the application and serve to explain the utility model together with the description. The utility model illustrative embodiments and their descriptions serve to explain the utility model, and do not constitute improper limitation on the utility model. In the drawings:

[0013] Figure 1 The utility model discloses a whole structure schematic view;

[0014] Figure 2 The utility model discloses a part structure schematic view;

[0015] Figure 3 The utility model discloses a whole structure part structure cross section view;

[0016] Figure 4 The utility model discloses a Figure 3 Part structure enlarged schematic view of A in the utility model.

[0017] In the drawing, serial number: 1, alloy pipe body;2, sealing rubber ring;3, sleeve;4, well cementing accessory;5, center pipe;6, pipe wall cleaner;7, first pipe body impact block;8, second pipe body impact block;9, anti-starter;10, tail pipe rubber plug;11, T-shaped fixing block. DETAILED DESCRIPTION

[0018] The technical solutions in the utility model embodiments will be clearly and completely described below with reference to the drawings in the utility model embodiments. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments.

[0019] Embodiment: refer to Figures 1-4The utility model discloses a high -performance well completion hanger, including alloy pipe body 1, through the alloy pipe body 1 is convenient for expanding anchor, forms new operation channel after;Alloy pipe body 1 is sleeved with a plurality of sealing rubber ring 2, through sealing rubber ring 2 is convenient for pipe body expansion extrusion after, anchor / sealing effect is played;And the lower end of alloy pipe body 1 is installed with the sleeve pipe 3, through the sleeve pipe 3 is convenient for connecting the cementing accessory 4 that needs to be suspended;The lower end of sleeve pipe 3 is sleeved with cementing accessory 4, through cementing accessory 4 is convenient for subsequent center tube 5 with alloy pipe body 1 separates;Alloy pipe body 1 inner chamber vertical installation has center tube 5, through center tube 5 is convenient for connecting construction pipe column and expansion device;Center tube 5 upper end is sleeved with prevent starter 9.

[0020] In the utility model, center tube 5 lower end is sleeved with pipe wall cleaner 6, through pipe wall cleaner 6 is convenient for cleaning alloy pipe body 1 inner wall;And center tube 5 lower end is also sleeved with first pipe body impact block 7, through first pipe body impact block 7 and second pipe body impact block 8 is convenient for expanding alloy pipe body after being pressed and going up;Second pipe body impact block 8 is installed in first pipe body impact block 7 lower end, and a plurality of equidistance fixed slots are formed in the outer side of center tube 5 lower end, and fixed block 11 is installed in the fixed slot of center tube 5, through fixed block 11 is convenient for connecting tail pipe rubber plug 10 and alloy pipe body 1;And center tube 5 bottom end is installed with tail pipe rubber plug 10, through tail pipe rubber plug 10 is convenient for subsequent process center tube 5 with alloy pipe body 1 separates;The fixed slot corresponding with center tube 5 lower end is formed in tail pipe rubber plug 10 upper end, and center tube 5 and tail pipe rubber plug 10 are connected through T-shaped fixed block 11.

[0021] Working principle: in the utility model for use, alloy pipe body 1 is inserted into the drilled hole, prevent starter 9 and external device connection prevent starting, through center tube 5, cement mortar is poured into after, cement mortar passes through tail pipe rubber plug 10 and enters alloy pipe body 1 outside, when reaching process solidification time, water source is passed in, the rubber plug corresponding with tail pipe rubber plug 10 is guided from center tube 5, when rubber plug reaches tail pipe rubber plug 10, the whole center tube 5 is blocked, and the pressure in center tube 5 needs to be continuously added, when the pressure is greater than the maximum pressure that fixed block 11 bears, tail pipe rubber plug 10 and center tube 5 are disconnected, so that tail pipe rubber plug 10 reaches the inside upper end of cementing accessory 4, and the pressure between center tube 5 and tail pipe rubber plug 10 is greater and greater, water will extrude second pipe body impact block 8 and first pipe body impact block 7 to drive center tube 5 to rise, and second pipe body impact block 8 and first pipe body impact block 7 will extrude the inner wall of alloy pipe body 1, so that sealing rubber ring 2 and metal pipe body 1 are connected cement mortar, and pipe wall cleaner 6 will also take away the sundries in the inner chamber of alloy pipe body 1 along with the rising of center tube 5.

[0022] The above merely describes a preferred embodiment of the present application, and the protection scope of the present application is not limited thereto, and any skilled person in the art, according to the technical scheme and the inventive concept of the present application, makes equivalent replacement or change within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. High performance completion hanger comprising an alloy tubular body (1) characterized in that: The alloy pipe body (1) is sleeved with a plurality of sealing rubber rings (2), and the lower end of the alloy pipe body (1) is provided with a sleeve (3), and the lower end of the sleeve (3) is sleeved with a well cementing accessory (4).

2. The high performance completion hanger of claim 1, wherein: The inner cavity of the alloy pipe body (1) is vertically provided with a central pipe (5), and the upper end of the central pipe (5) is sleeved with an anti-starter (9).

3. The high performance completion hanger of claim 2, wherein: The lower end of the central pipe (5) is sleeved with a pipe wall cleaner (6), and the lower end of the central pipe (5) is also sleeved with a first pipe body impact block (7), and the lower end of the first pipe body impact block (7) is provided with a second pipe body impact block (8).

4. The high performance completion hanger of claim 3, wherein: The lower end of the central pipe (5) is provided with a plurality of equidistant fixing grooves.

5. The high performance completion hanger of claim 3, wherein: The fixing grooves of the central pipe (5) are all provided with fixing blocks (11), and the bottom end of the central pipe (5) is provided with a tail pipe rubber plug (10).

6. The high performance completion hanger of claim 5, wherein: The upper end of the tail pipe rubber plug (10) is provided with a fixing groove corresponding to the lower end of the central pipe (5), and the central pipe (5) and the tail pipe rubber plug (10) are connected through a T-shaped fixing block (11).

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