Bell type non-compressible tubing end apparatus

1 . A system for use in a wellbore, the system comprising:

a casing, comprising a casing interior, extending from a surface to a predetermined depth in the wellbore;

a tubing, comprising a tubing interior, disposed inside the casing; and

an entry guide comprising: an entry guide upper end fluidly connected to a tubing lower end of the tubing, and an expandable portion at an entry guide lower end, wherein the expandable portion that is configured to expand, in response to a pressure change, from a compressed state to an expanded state,

wherein:

the expandable portion of the entry guide comprises an opening at the entry guide lower end that is exposed to the casing interior, and

a second diameter of the opening in the expanded state is larger than a first diameter of the opening in the compressed state,

wherein the expandable portion comprises a plastically deformable material, such that the expansion of the entry guide is irreversible after being expanded in response to the pressure change.

2 . The system of claim 1 , wherein no gap is present between an inner surface of the casing and an outer surface of the entry guide when the entry guide is in the expanded state.

3 . The system of claim 1 , wherein when the entry guide is in the expanded state, the entry guide comprises a bell shape.

4 . The system of claim 1 further comprising a ball seat coupled to the entry guide lower end when the entry guide is in the compressed state, wherein the ball seat is configured to accommodate a ball released from the surface, wherein the ball seat and the ball cooperate to isolate the tubing interior from the casing interior.

5 . The system of claim 4 , wherein when a pressure inside the tubing increases to a threshold pressure value, the entry guide is configured to expand from the compressed state to the expanded state, and the ball seat accommodating the ball is sheared off from the entry guide.

6 . The system of claim 1 , wherein the second diameter of the opening in the expanded state is larger than a diameter of the entry guide upper end.

7 . An entry guide for use in a wellbore, the entry guide comprising:

an entry guide upper end configured to be fluidly connected to a tubing lower end of a tubing that is disposed inside a casing extending from a surface to a predetermined depth in the wellbore; and

an expandable portion at an entry guide lower end, wherein the expandable portion is configured to expand, in response to a pressure change, from a compressed state to an expanded state; and

an opening of the expandable portion at the entry guide lower end that is configured to expose a tubing interior of the tubing to a casing interior of the casing,

wherein a second diameter of the opening in the expanded state is larger than a first diameter of the opening in the compressed state,

wherein the expandable portion comprises a plastically deformable material, such that the expansion of the entry guide is irreversible after being expanded in response to the pressure change.

8 . The entry guide of claim 7 , wherein the entry guide is configured to have no gap between an inner surface of the casing and an outer surface of the entry guide when the entry guide is in the expanded state.

9 . The entry guide of claim 7 , wherein when the entry guide is in the expanded state, the entry guide comprises a bell shape.

10 . The entry guide of claim 7 further comprising a ball seat coupled to the entry guide lower end when the expandable portion of the entry guide is in the compressed state, wherein the ball seat is sheared off from the entry guide when the expandable portion of the entry guide is in the expanded state.

11 . The entry guide of claim 7 , wherein the second diameter of the opening in the expanded state is larger than a diameter of the entry guide upper end.

12 . A method for installing a system in a wellbore, the method comprising:

installing a casing, comprising a casing interior, extending from a surface to a predetermined depth in the wellbore;

installing a tubing, comprising a tubing interior, disposed inside the casing;

coupling an entry guide upper end of an entry guide to a tubing lower end of the tubing, thereby fluidly connecting the entry guide to the tubing, wherein the entry guide comprises an expandable portion at an entry guide lower end, wherein the expandable portion is configured to expand, in response to a pressure change, from a compressed state to an expanded state; and

increasing a pressure inside the tubing such that the expandable portion of the entry guide expands from the compressed state to the expanded state,

wherein: the expandable portion of the entry guide comprises an opening at the entry guide lower end that is exposed to the casing interior, and

a second diameter of the opening in the expanded state is larger than a first diameter of the opening in the compressed state,

wherein the expandable portion comprises a plastically deformable material, such that the expansion of the entry guide is irreversible after being expanded in response to the pressure change.

13 . The method of claim 12 , wherein no gap is present between an inner surface of the casing and an outer surface of the entry guide when the entry guide is in the expanded state.

14 . The method of claim 12 , wherein when the entry guide is in the expanded state, the entry guide comprises a bell shape.

15 . The method of claim 12 further comprising coupling a ball seat to the entry guide lower end when the entry guide is in the compressed state.

16 . The method of claim 15 further comprising releasing a ball from the surface to the ball seat, wherein the ball seat and the ball cooperate to isolate the tubing interior from the casing interior.

17 . The method of claim 16 further comprising increasing the pressure inside the tubing to a threshold pressure value, such that the entry guide expands from the compressed state to the expanded state, and the ball seat accommodating the ball is sheared off from the entry guide.