Stabilizing system for deep drilling
AssigneeAbu Dhabi National Oil Company
InventorsFahed Salem Saleh Awadh Al Ameri, Farhaad Khaled Saeed Mohamed Al Awadhi
Life of this patent
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Abstract
The present invention relates to a stabilizing system (100, 200, 300) adapted to be used in a drilling system, wherein the transversal diameter of the stabilizing system (100, 200, 300) increases when drilling forces are applied onto the stabilizing system (100, 200, 300). The invention further comprises a corresponding method for drilling a hole.
Claims18
A stabilizing system adapted to be used in a deep drilling system, wherein the stabilizing system is configured to increase a transversal diameter of the stabilizing system when drilling forces are applied onto the stabilizing system, and wherein the stabilizing system is configured to decrease the transversal diameter when pulling forces are applied onto the stabilizing system, the stabilizing system comprising:
- a hollow housing;
- at least one spacer having a blade shape and supported in an opening in the housing, such that the at least one spacer can protrude through said opening and is movable relative to the housing between a retracted and an expanded position, wherein the extend of protrusion increases when the at least one spacer is moved to the expanded position;
- a column arranged inside the hollow housing, being adapted to transfer drilling forces applied onto the stabilizing system, wherein the column is movable relative to the housing between a drilling position and a pulling position,
- a restoring means adapted to apply a reset force to urge the at least one spacer back to the retracted position;
- wherein
- the column moves to the drilling position when drilling forces are applied onto the stabilizing system,
- the at least one spacer is moved to the expanded position by the column moving to the drilling position, and
- the column comprises a thin section with a first diameter and a thick section with a second diameter, wherein the second diameter is greater than the first diameter, and
- the at least one spacer comprises a recess adapted to receive said thick section when the column is in the pulling position, and
- the thick section is adapted to urge the at least one spacer into the expanded position when the column is moved to the drilling position.
A method for drilling a hole utilizing a drilling system, comprising a stabilizing system, said stabilizing system comprising a hollow housing, at least one spacer being movable relative to the housing between a retracted and an expanded position, and a column arranged inside the hollow housing and being movable relative to the housing between a drilling position and a pulling position, the method comprising the following steps:
- a. applying a positive force onto the stabilizing system in a longitudinal direction causing the column to move to the drilling position and causing the overall longitudinal length of the stabilizing system to shorten such that the at least one spacer is moved to the expanded position, the at least one spacer having a recess that is adapted to receive a section of the column when the column is in the pulling position whereby the spacer is urged into the expanded position when the column is moved to the drilling position, and
- b. applying a negative force on the stabilizing system in longitudinal direction causing the column to move to the pulling position and causing the overall longitudinal length of the stabilizing system to elongate such that the at least one spacer is moved to the retracted position.
A stabilizing system adapted to be used in a deep drilling system, wherein the stabilizing system is configured to increase a transversal diameter of the stabilizing system when drilling forces are applied onto the stabilizing system, and wherein the stabilizing system is configured to decrease the transversal diameter when pulling forces are applied onto the stabilizing system, the stabilizing system comprising:
- a hollow housing;
- at least one spacer supported in an opening in the housing, such that the at least one spacer can protrude through said opening and is movable relative to the housing between a retracted and an expanded position, wherein the extend of protrusion increases when the at least one spacer is moved to the expanded position;
- a column arranged inside the hollow housing, being adapted to transfer drilling forces applied onto the stabilizing system, wherein the column is movable relative to the housing between a drilling position and a pulling position,
- a restoring means adapted to apply a reset force to urge the at least one spacer back to the retracted position, thereby decreasing the transversal diameter when the column is moved from the drilling position to the pulling position,
- wherein the column moves to the drilling position when drilling forces are applied onto the stabilizing system,
- wherein the at least one spacer is moved to the expanded position by the column moving to the drilling position, thereby increasing the transversal diameter when the column is moved from the pulling position to the drilling position, and
- wherein the at least one spacer comprises a hole or valve extending from an interior side of the spacer to an exterior side of the at least one spacer, wherein the hole or valve extends from an edge of the recess provided on the interior side of the at least one spacer.
Dependencies are inferred from the claim text.