Well tool comprising an orientation system and method for using same

A well tool system for performing an operation in an oil/gas well, wherein the well tool system comprises:

• a well tool for performing an operation in an oil/gas well, wherein the well tool is insertable into a bore comprising a guide groove in an inner surface of the bore, wherein the well tool comprises:
• a mandrel having a longitudinal direction and a radial direction perpendicular to the longitudinal direction;
• an orientation system for longitudinal and rotational orientation of the well tool with respect to the bore;
• wherein:
• the well tool further comprises an outer housing arranged radially outside the mandrel;
• the orientation system comprises:
• a radial opening provided in the outer housing;
• a finger sleeve comprising a longitudinally extending resilient finger with a distal part and a proximal part connected to the finger sleeve;
• wherein the finger sleeve is arranged radially between the mandrel and the outer housing;
• wherein the distal part comprises a first wedge-shaped portion and a second wedge-shaped portion both extending in the outwards radial direction and tapering away from each other in the longitudinal direction;
• wherein the orientation system has an initial state in which the first wedge-shaped portion protrudes radially through the radial opening of the outer housing and is configured to engage the guide groove;
• wherein the first wedge-shaped portion is configured to be longitudinally and rotationally guided in the guide groove when the well tool is moved longitudinally;
• wherein the well tool is configured to rotate with the first wedge-shaped portion;
• wherein the orientation system has a subsequent state in which the first wedge-shaped portion is radially retracted in the radial opening of the outer housing,
• wherein the well tool is a cement spool straddle comprising an inlet extending in the radial direction;
• and
• a cement spool;
• characterized in that wherein the cement spool comprises:
• a bore extending in a longitudinal direction of the cement spool and being configured to receive the well tool;
• an inlet extending from the bore in a radial direction to an outside of the cement spool;
• and
• a guide groove provided in an inner surface of the bore and configured to receive and guide the first wedge-shaped portion of the well tool;
• wherein the guide groove comprises an upper point and a lower point that are spaced apart in the longitudinal direction of the cement spool;
• wherein the guide groove extends from the lower point to the upper point in a substantially helical manner;
• wherein the positioning of the upper point relative to the inlet of the cement spool matches the positioning of the first wedge-shaped portion relative to the inlet of the well tool in the initial state of the orientation system.

A method for rotationally and longitudinally aligning a well tool in a bore with a guide groove,

• wherein the well tool is a well tool for performing an operation in an oil/gas well, wherein the well tool is insertable into a bore comprising a guide groove in an inner surface of the bore, wherein the well tool comprises:
• a mandrel having a longitudinal direction and a radial direction perpendicular to the longitudinal direction;
• an orientation system for longitudinal and rotational orientation of the well tool with respect to the bore;
• wherein:
• the well tool further comprises an outer housing arranged radially outside the mandrel;
• the orientation system comprises:
• a radial opening provided in the outer housing;
• a finger sleeve comprising a longitudinally extending resilient finger with a distal part and a proximal part connected to the finger sleeve;
• wherein the finger sleeve is arranged radially between the mandrel and the outer housing;
• wherein the distal part comprises a first wedge-shaped portion and a second wedge-shaped portion both extending in the outwards radial direction and tapering away from each other in the longitudinal direction;
• wherein the orientation system has an initial state in which the first wedge-shaped portion protrudes radially through the radial opening of the outer housing and is configured to engage the guide groove;
• wherein the first wedge-shaped portion is configured to be longitudinally and rotationally guided in the guide groove when the well tool is moved longitudinally;
• wherein the well tool is configured to rotate with the first wedge-shaped portion;
• wherein the orientation system has a subsequent state in which the first wedge-shaped portion is radially retracted in the radial opening of the outer housing,
• wherein the method comprises:
• configuring the orientation system to be in the initial state;
• inserting the well tool into a bore comprising an inner surface provided with a lock groove;
• running the well tool in an inserting direction through the bore at least until the first wedge-shaped portion reaches the guide groove of the bore;
• pulling the well tool with a predetermined force in a pulling direction through the bore while allowing the well tool to swivel in the bore in response to a guiding interaction between the first wedge-shaped portion and the guide groove of the bore;
• and
• continue pulling the well tool with a predetermined force in the pulling direction through the bore until the well tool stops moving.